changeset 9450:b57d415bdaa9

8140779: Code generation fixes for avx512 Summary: Assembler refactoring. Abstract away instruction attributes. Reviewed-by: kvn, roland, iveresov Contributed-by: michael.c.berg@intel.com
author iveresov
date Mon, 09 Nov 2015 11:26:41 -0800
parents da94f6001040
children e056220365a2
files src/cpu/aarch64/vm/aarch64.ad src/cpu/aarch64/vm/c2_globals_aarch64.hpp src/cpu/ppc/vm/c2_globals_ppc.hpp src/cpu/ppc/vm/ppc.ad src/cpu/sparc/vm/c2_globals_sparc.hpp src/cpu/sparc/vm/sparc.ad src/cpu/x86/vm/assembler_x86.cpp src/cpu/x86/vm/assembler_x86.hpp src/cpu/x86/vm/c1_LIRAssembler_x86.cpp src/cpu/x86/vm/c2_globals_x86.hpp src/cpu/x86/vm/c2_init_x86.cpp src/cpu/x86/vm/macroAssembler_x86.cpp src/cpu/x86/vm/macroAssembler_x86.hpp src/cpu/x86/vm/sharedRuntime_x86_32.cpp src/cpu/x86/vm/sharedRuntime_x86_64.cpp src/cpu/x86/vm/stubGenerator_x86_64.cpp src/cpu/x86/vm/vm_version_x86.cpp src/cpu/x86/vm/vm_version_x86.hpp src/cpu/x86/vm/x86.ad src/cpu/x86/vm/x86_32.ad src/cpu/x86/vm/x86_64.ad src/share/vm/opto/c2_globals.hpp src/share/vm/opto/matcher.hpp src/share/vm/opto/superword.cpp src/share/vm/opto/vectornode.cpp
diffstat 25 files changed, 4905 insertions(+), 2676 deletions(-) [+]
line wrap: on
line diff
--- a/src/cpu/aarch64/vm/aarch64.ad	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/aarch64/vm/aarch64.ad	Mon Nov 09 11:26:41 2015 -0800
@@ -1079,10 +1079,10 @@
   // and for a volatile write we need
   //
   //   stlr<x>
-  // 
+  //
   // Alternatively, we can implement them by pairing a normal
   // load/store with a memory barrier. For a volatile read we need
-  // 
+  //
   //   ldr<x>
   //   dmb ishld
   //
@@ -1240,7 +1240,7 @@
   // Alternatively, we can elide generation of the dmb instructions
   // and plant the alternative CompareAndSwap macro-instruction
   // sequence (which uses ldaxr<x>).
-  // 
+  //
   // Of course, the above only applies when we see these signature
   // configurations. We still want to plant dmb instructions in any
   // other cases where we may see a MemBarAcquire, MemBarRelease or
@@ -1367,7 +1367,7 @@
     opcode = parent->Opcode();
     return opcode == Op_MemBarRelease;
   }
- 
+
   // 2) card mark detection helper
 
   // helper predicate which can be used to detect a volatile membar
@@ -1383,7 +1383,7 @@
   // true
   //
   // iii) the node's Mem projection feeds a StoreCM node.
-  
+
   bool is_card_mark_membar(const MemBarNode *barrier)
   {
     if (!UseG1GC && !(UseConcMarkSweepGC && UseCondCardMark)) {
@@ -1402,7 +1402,7 @@
 	return true;
       }
     }
-  
+
     return false;
   }
 
@@ -1430,7 +1430,7 @@
   // where
   //  || and \\ represent Ctl and Mem feeds via Proj nodes
   //  | \ and / indicate further routing of the Ctl and Mem feeds
-  // 
+  //
   // this is the graph we see for non-object stores. however, for a
   // volatile Object store (StoreN/P) we may see other nodes below the
   // leading membar because of the need for a GC pre- or post-write
@@ -1592,7 +1592,7 @@
   // ordering but neither will a releasing store (stlr). The latter
   // guarantees that the object put is visible but does not guarantee
   // that writes by other threads have also been observed.
-  // 
+  //
   // So, returning to the task of translating the object put and the
   // leading/trailing membar nodes: what do the non-normal node graph
   // look like for these 2 special cases? and how can we determine the
@@ -1731,7 +1731,7 @@
   //       |         |         |            |
   //     C |       M |       M |          M |
   //        \        |         |           /
-  //                  . . . 
+  //                  . . .
   //          (post write subtree elided)
   //                    . . .
   //             C \         M /
@@ -1812,12 +1812,12 @@
   //   |    |                 |  /        /
   //   |  Region  . . .     Phi[M]  _____/
   //   |    /                 |    /
-  //   |                      |   /   
+  //   |                      |   /
   //   | . . .   . . .        |  /
   //   | /                    | /
   // Region           |  |  Phi[M]
   //   |              |  |  / Bot
-  //    \            MergeMem 
+  //    \            MergeMem
   //     \            /
   //     MemBarVolatile
   //
@@ -1858,7 +1858,7 @@
   // to a trailing barrier via a MergeMem. That feed is either direct
   // (for CMS) or via 2 or 3 Phi nodes merging the leading barrier
   // memory flow (for G1).
-  // 
+  //
   // The predicates controlling generation of instructions for store
   // and barrier nodes employ a few simple helper functions (described
   // below) which identify the presence or absence of all these
@@ -2112,8 +2112,8 @@
       x = x->in(MemNode::Memory);
     } else {
       // the merge should get its Bottom mem feed from the leading membar
-      x = mm->in(Compile::AliasIdxBot);      
-    } 
+      x = mm->in(Compile::AliasIdxBot);
+    }
 
     // ensure this is a non control projection
     if (!x->is_Proj() || x->is_CFG()) {
@@ -2190,12 +2190,12 @@
   //     . . .
   //       |
   //   MemBarVolatile (card mark)
-  //      |          |     
+  //      |          |
   //      |        StoreCM
   //      |          |
   //      |        . . .
-  //  Bot |  / 
-  //   MergeMem 
+  //  Bot |  /
+  //   MergeMem
   //      |
   //      |
   //    MemBarVolatile {trailing}
@@ -2203,10 +2203,10 @@
   // 2)
   //   MemBarRelease/CPUOrder (leading)
   //    |
-  //    | 
+  //    |
   //    |\       . . .
-  //    | \        | 
-  //    |  \  MemBarVolatile (card mark) 
+  //    | \        |
+  //    |  \  MemBarVolatile (card mark)
   //    |   \   |     |
   //     \   \  |   StoreCM    . . .
   //      \   \ |
@@ -2231,7 +2231,7 @@
   //    |  \   \  |   StoreCM    . . .
   //    |   \   \ |
   //     \   \  Phi
-  //      \   \ /  
+  //      \   \ /
   //       \  Phi
   //        \ /
   //        Phi  . . .
@@ -2506,7 +2506,7 @@
 
     return (x->is_Load() && x->as_Load()->is_acquire());
   }
-  
+
   // now check for an unsafe volatile get
 
   // need to check for
@@ -2644,7 +2644,7 @@
   }
 
   membar = child_membar(membar);
-  
+
   if (!membar || !membar->Opcode() == Op_MemBarCPUOrder) {
     return false;
   }
@@ -2703,7 +2703,7 @@
 
   // first we check if this is part of a card mark. if so then we have
   // to generate a StoreLoad barrier
-  
+
   if (is_card_mark_membar(mbvol)) {
       return false;
   }
@@ -2769,7 +2769,7 @@
   if (!is_card_mark_membar(mbvol)) {
     return true;
   }
-  
+
   // we found a card mark -- just make sure we have a trailing barrier
 
   return (card_mark_to_trailing(mbvol) != NULL);
@@ -2808,7 +2808,7 @@
 
   assert(barrier->Opcode() == Op_MemBarCPUOrder,
 	 "CAS not fed by cpuorder membar!");
-      
+
   MemBarNode *b = parent_membar(barrier);
   assert ((b != NULL && b->Opcode() == Op_MemBarRelease),
 	  "CAS not fed by cpuorder+release membar pair!");
@@ -3463,6 +3463,17 @@
   return true;  // Per default match rules are supported.
 }
 
+const bool Matcher::match_rule_supported_vector(int opcode, int vlen) {
+
+  // TODO
+  // identify extra cases that we might want to provide match rules for
+  // e.g. Op_ vector nodes and other intrinsics while guarding with vlen
+  bool ret_value = match_rule_supported(opcode);
+  // Add rules here.
+
+  return ret_value;  // Per default match rules are supported.
+}
+
 const int Matcher::float_pressure(int default_pressure_threshold) {
   return default_pressure_threshold;
 }
@@ -4663,7 +4674,7 @@
       call = __ trampoline_call(Address(addr, relocInfo::static_call_type), &cbuf);
     }
     if (call == NULL) {
-      ciEnv::current()->record_failure("CodeCache is full"); 
+      ciEnv::current()->record_failure("CodeCache is full");
       return;
     }
 
@@ -4671,7 +4682,7 @@
       // Emit stub for static call
       address stub = CompiledStaticCall::emit_to_interp_stub(cbuf);
       if (stub == NULL) {
-        ciEnv::current()->record_failure("CodeCache is full"); 
+        ciEnv::current()->record_failure("CodeCache is full");
         return;
       }
     }
@@ -4681,7 +4692,7 @@
     MacroAssembler _masm(&cbuf);
     address call = __ ic_call((address)$meth$$method);
     if (call == NULL) {
-      ciEnv::current()->record_failure("CodeCache is full"); 
+      ciEnv::current()->record_failure("CodeCache is full");
       return;
     }
   %}
@@ -4706,7 +4717,7 @@
     if (cb) {
       address call = __ trampoline_call(Address(entry, relocInfo::runtime_call_type));
       if (call == NULL) {
-        ciEnv::current()->record_failure("CodeCache is full"); 
+        ciEnv::current()->record_failure("CodeCache is full");
         return;
       }
     } else {
--- a/src/cpu/aarch64/vm/c2_globals_aarch64.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/aarch64/vm/c2_globals_aarch64.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -73,6 +73,7 @@
 define_pd_global(bool, OptoScheduling,               false);
 define_pd_global(bool, OptoBundling,                 false);
 define_pd_global(bool, OptoRegScheduling,            false);
+define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
 
 define_pd_global(intx, ReservedCodeCacheSize,        48*M);
 define_pd_global(intx, NonProfiledCodeHeapSize,      21*M);
--- a/src/cpu/ppc/vm/c2_globals_ppc.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/ppc/vm/c2_globals_ppc.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -61,6 +61,7 @@
 define_pd_global(bool, UseCISCSpill,                 false);
 define_pd_global(bool, OptoBundling,                 false);
 define_pd_global(bool, OptoRegScheduling,            false);
+define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
 // GL:
 // Detected a problem with unscaled compressed oops and
 // narrow_oop_use_complex_address() == false.
--- a/src/cpu/ppc/vm/ppc.ad	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/ppc/vm/ppc.ad	Mon Nov 09 11:26:41 2015 -0800
@@ -2064,6 +2064,17 @@
   return true;  // Per default match rules are supported.
 }
 
+const bool Matcher::match_rule_supported_vector(int opcode, int vlen) {
+
+  // TODO
+  // identify extra cases that we might want to provide match rules for
+  // e.g. Op_ vector nodes and other intrinsics while guarding with vlen
+  bool ret_value = match_rule_supported(opcode);
+  // Add rules here.
+
+  return ret_value;  // Per default match rules are supported.
+}
+
 const int Matcher::float_pressure(int default_pressure_threshold) {
   return default_pressure_threshold;
 }
@@ -3416,7 +3427,7 @@
       // The stub for call to interpreter.
       address stub = CompiledStaticCall::emit_to_interp_stub(cbuf);
       if (stub == NULL) {
-        ciEnv::current()->record_failure("CodeCache is full"); 
+        ciEnv::current()->record_failure("CodeCache is full");
         return;
       }
     }
@@ -3465,7 +3476,7 @@
     // The stub for call to interpreter.
     address stub = CompiledStaticCall::emit_to_interp_stub(cbuf);
     if (stub == NULL) {
-      ciEnv::current()->record_failure("CodeCache is full"); 
+      ciEnv::current()->record_failure("CodeCache is full");
       return;
     }
 
@@ -6912,7 +6923,7 @@
     n_compare->_opnds[0] = op_crx;
     n_compare->_opnds[1] = op_src;
     n_compare->_opnds[2] = new immN_0Oper(TypeNarrowOop::NULL_PTR);
-    
+
     decodeN_mergeDisjointNode *n2 = new decodeN_mergeDisjointNode();
     n2->add_req(n_region, n_src, n1);
     n2->_opnds[0] = op_dst;
@@ -10589,7 +10600,7 @@
 
 instruct cmpFUnordered_reg_reg(flagsReg crx, regF src1, regF src2) %{
   // Needs matchrule, see cmpDUnordered.
-  match(Set crx (CmpF src1 src2)); 
+  match(Set crx (CmpF src1 src2));
   // no match-rule, false predicate
   predicate(false);
 
@@ -10698,13 +10709,13 @@
 %}
 
 instruct cmpDUnordered_reg_reg(flagsReg crx, regD src1, regD src2) %{
-  // Needs matchrule so that ideal opcode is Cmp. This causes that gcm places the 
-  // node right before the conditional move using it. 
+  // Needs matchrule so that ideal opcode is Cmp. This causes that gcm places the
+  // node right before the conditional move using it.
   // In jck test api/java_awt/geom/QuadCurve2DFloat/index.html#SetCurveTesttestCase7,
   // compilation of java.awt.geom.RectangularShape::getBounds()Ljava/awt/Rectangle
   // crashed in register allocation where the flags Reg between cmpDUnoredered and a
   // conditional move was supposed to be spilled.
-  match(Set crx (CmpD src1 src2)); 
+  match(Set crx (CmpD src1 src2));
   // False predicate, shall not be matched.
   predicate(false);
 
--- a/src/cpu/sparc/vm/c2_globals_sparc.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/sparc/vm/c2_globals_sparc.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -65,6 +65,7 @@
 define_pd_global(bool, OptoBundling,                 false);
 define_pd_global(bool, OptoScheduling,               true);
 define_pd_global(bool, OptoRegScheduling,            false);
+define_pd_global(bool, SuperWordLoopUnrollAnalysis,  false);
 
 #ifdef _LP64
 // We need to make sure that all generated code is within
--- a/src/cpu/sparc/vm/sparc.ad	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/sparc/vm/sparc.ad	Mon Nov 09 11:26:41 2015 -0800
@@ -1860,6 +1860,17 @@
   return true;  // Per default match rules are supported.
 }
 
+const bool Matcher::match_rule_supported_vector(int opcode, int vlen) {
+
+  // TODO
+  // identify extra cases that we might want to provide match rules for
+  // e.g. Op_ vector nodes and other intrinsics while guarding with vlen
+  bool ret_value = match_rule_supported(opcode);
+  // Add rules here.
+
+  return ret_value;  // Per default match rules are supported.
+}
+
 const int Matcher::float_pressure(int default_pressure_threshold) {
   return default_pressure_threshold;
 }
@@ -1905,7 +1916,7 @@
 }
 
 // Current (2013) SPARC platforms need to read original key
-// to construct decryption expanded key 
+// to construct decryption expanded key
 const bool Matcher::pass_original_key_for_aes() {
   return true;
 }
@@ -2612,7 +2623,7 @@
       if (stub == NULL && !(TraceJumps && Compile::current()->in_scratch_emit_size())) {
         ciEnv::current()->record_failure("CodeCache is full");
         return;
-      } 
+      }
     }
   %}
 
@@ -3132,10 +3143,10 @@
 // AVOID_NONE   - instruction can be placed anywhere
 // AVOID_BEFORE - instruction cannot be placed after an
 //                instruction with MachNode::AVOID_AFTER
-// AVOID_AFTER  - the next instruction cannot be the one 
+// AVOID_AFTER  - the next instruction cannot be the one
 //                with MachNode::AVOID_BEFORE
-// AVOID_BEFORE_AND_AFTER - BEFORE and AFTER attributes at 
-//                          the same time                                
+// AVOID_BEFORE_AND_AFTER - BEFORE and AFTER attributes at
+//                          the same time
 ins_attrib ins_avoid_back_to_back(MachNode::AVOID_NONE);
 
 ins_attrib ins_short_branch(0);    // Required flag: is this instruction a
--- a/src/cpu/x86/vm/assembler_x86.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -313,7 +313,7 @@
     switch (cur_tuple_type) {
     case EVEX_FV:
       if ((cur_encoding & VEX_W) == VEX_W) {
-        mod_idx += 2 + ((cur_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
+        mod_idx = ((cur_encoding & EVEX_Rb) == EVEX_Rb) ? 3 : 2;
       } else {
         mod_idx = ((cur_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
       }
@@ -394,25 +394,27 @@
   int mod_idx = 0;
   // We will test if the displacement fits the compressed format and if so
   // apply the compression to the displacment iff the result is8bit.
-  if (VM_Version::supports_evex() && _is_evex_instruction) {
-    switch (_tuple_type) {
+  if (VM_Version::supports_evex() && (_attributes != NULL) && _attributes->is_evex_instruction()) {
+    int evex_encoding = _attributes->get_evex_encoding();
+    int tuple_type = _attributes->get_tuple_type();
+    switch (tuple_type) {
     case EVEX_FV:
-      if ((_evex_encoding & VEX_W) == VEX_W) {
-        mod_idx += 2 + ((_evex_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
+      if ((evex_encoding & VEX_W) == VEX_W) {
+        mod_idx = ((evex_encoding & EVEX_Rb) == EVEX_Rb) ? 3 : 2;
       } else {
-        mod_idx = ((_evex_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
+        mod_idx = ((evex_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
       }
       break;
 
     case EVEX_HV:
-      mod_idx = ((_evex_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
+      mod_idx = ((evex_encoding & EVEX_Rb) == EVEX_Rb) ? 1 : 0;
       break;
 
     case EVEX_FVM:
       break;
 
     case EVEX_T1S:
-      switch (_input_size_in_bits) {
+      switch (_attributes->get_input_size()) {
       case EVEX_8bit:
         break;
 
@@ -433,7 +435,7 @@
     case EVEX_T1F:
     case EVEX_T2:
     case EVEX_T4:
-      mod_idx = (_input_size_in_bits == EVEX_64bit) ? 1 : 0;
+      mod_idx = (_attributes->get_input_size() == EVEX_64bit) ? 1 : 0;
       break;
 
     case EVEX_T8:
@@ -459,8 +461,9 @@
       break;
     }
 
-    if (_avx_vector_len >= AVX_128bit && _avx_vector_len <= AVX_512bit) {
-      int disp_factor = tuple_table[_tuple_type + mod_idx][_avx_vector_len];
+    int vector_len = _attributes->get_vector_len();
+    if (vector_len >= AVX_128bit && vector_len <= AVX_512bit) {
+      int disp_factor = tuple_table[tuple_type + mod_idx][vector_len];
       if ((disp % disp_factor) == 0) {
         int new_disp = disp / disp_factor;
         if (is8bit(new_disp)) {
@@ -591,7 +594,6 @@
       emit_data(disp, rspec, disp32_operand);
     }
   }
-  _is_evex_instruction = false;
 }
 
 void Assembler::emit_operand(XMMRegister reg, Register base, Register index,
@@ -770,7 +772,7 @@
     case 0x55: // andnps
     case 0x56: // orps
     case 0x57: // xorps
-    case 0x59: //mulpd
+    case 0x59: // mulpd
     case 0x6E: // movd
     case 0x7E: // movd
     case 0xAE: // ldmxcsr, stmxcsr, fxrstor, fxsave, clflush
@@ -1234,51 +1236,53 @@
 
 void Assembler::addsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x58, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x58, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::addsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x58, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x58, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::addss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x58, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::addss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x58, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::aesdec(XMMRegister dst, Address src) {
   assert(VM_Version::supports_aes(), "");
   InstructionMark im(this);
-  simd_prefix(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDE);
   emit_operand(dst, src);
 }
 
 void Assembler::aesdec(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_aes(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38,  /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDE);
   emit_int8(0xC0 | encode);
 }
@@ -1286,16 +1290,16 @@
 void Assembler::aesdeclast(XMMRegister dst, Address src) {
   assert(VM_Version::supports_aes(), "");
   InstructionMark im(this);
-  simd_prefix(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit,  /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDF);
   emit_operand(dst, src);
 }
 
 void Assembler::aesdeclast(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_aes(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38,  /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDF);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -1303,16 +1307,16 @@
 void Assembler::aesenc(XMMRegister dst, Address src) {
   assert(VM_Version::supports_aes(), "");
   InstructionMark im(this);
-  simd_prefix(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDC);
   emit_operand(dst, src);
 }
 
 void Assembler::aesenc(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_aes(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDC);
   emit_int8(0xC0 | encode);
 }
@@ -1320,16 +1324,16 @@
 void Assembler::aesenclast(XMMRegister dst, Address src) {
   assert(VM_Version::supports_aes(), "");
   InstructionMark im(this);
-  simd_prefix(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit,  /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDD);
   emit_operand(dst, src);
 }
 
 void Assembler::aesenclast(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_aes(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xDD);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -1361,15 +1365,17 @@
 
 void Assembler::andnl(Register dst, Register src1, Register src2) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_legacy(dst, src1, src2);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), src1->encoding(), src2->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF2);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::andnl(Register dst, Register src1, Address src2) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_legacy(dst, src1, src2);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src2, src1->encoding(), dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF2);
   emit_operand(dst, src2);
 }
@@ -1396,45 +1402,51 @@
 
 void Assembler::blsil(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_legacy(rbx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rbx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsil(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_legacy(rbx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rbx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rbx, src);
 }
 
 void Assembler::blsmskl(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_legacy(rdx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rdx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsmskl(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_legacy(rdx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rdx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rdx, src);
 }
 
 void Assembler::blsrl(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_legacy(rcx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rcx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsrl(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_legacy(rcx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rcx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rcx, src);
 }
@@ -1581,36 +1593,38 @@
   // NOTE: dbx seems to decode this as comiss even though the
   // 0x66 is there. Strangly ucomisd comes out correct
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_nonds_q(0x2F, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith_nonds(0x2F, dst, src, VEX_SIMD_66);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);;
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2F);
+  emit_operand(dst, src);
 }
 
 void Assembler::comisd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_nonds_q(0x2F, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith_nonds(0x2F, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2F);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::comiss(XMMRegister dst, Address src) {
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith_nonds(0x2F, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2F);
+  emit_operand(dst, src);
 }
 
 void Assembler::comiss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith_nonds(0x2F, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2F);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cpuid() {
@@ -1699,100 +1713,113 @@
 
 void Assembler::cvtdq2pd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0xE6, dst, src, VEX_SIMD_F3, /* no_mask_reg */ false, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xE6);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtdq2ps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0x5B, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ false, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5B);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsd2ss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5A, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5A, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5A);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsd2ss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1F;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x5A, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5A, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5A);
+  emit_operand(dst, src);
 }
 
 void Assembler::cvtsi2sdl(XMMRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VM_Version::supports_evex());
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsi2sdl(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-    emit_simd_arith(0x2A, dst, src, VEX_SIMD_F2, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith(0x2A, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2A);
+  emit_operand(dst, src);
 }
 
 void Assembler::cvtsi2ssl(XMMRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsi2ssl(XMMRegister dst, Address src) {
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x2A, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2A);
+  emit_operand(dst, src);
 }
 
 void Assembler::cvtsi2ssq(XMMRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode_q(dst, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtss2sd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x5A, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5A);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtss2sd(XMMRegister dst, Address src) {
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x5A, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5A);
+  emit_operand(dst, src);
 }
 
 
 void Assembler::cvttsd2sil(Register dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvttss2sil(Register dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -1807,36 +1834,38 @@
 
 void Assembler::divsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x5E, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5E, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::divsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5E, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5E, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::divss(XMMRegister dst, Address src) {
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x5E, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::divss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x5E, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::emms() {
@@ -2082,36 +2111,26 @@
 
 void Assembler::movapd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_avx512novl()) {
-    int vector_len = AVX_512bit;
-    int dst_enc = dst->encoding();
-    int src_enc = src->encoding();
-    int encode = vex_prefix_and_encode(dst_enc, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F,
-                                       /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
-    emit_int8(0x28);
-    emit_int8((unsigned char)(0xC0 | encode));
-  } else if (VM_Version::supports_evex()) {
-    emit_simd_arith_nonds_q(0x28, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith_nonds(0x28, dst, src, VEX_SIMD_66);
-  }
+  int vector_len = VM_Version::supports_avx512novl() ? AVX_512bit : AVX_128bit;
+  InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x28);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movaps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_avx512novl()) {
-    int vector_len = AVX_512bit;
-    int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, vector_len);
-    emit_int8(0x28);
-    emit_int8((unsigned char)(0xC0 | encode));
-  } else {
-    emit_simd_arith_nonds(0x28, dst, src, VEX_SIMD_NONE);
-  }
+  int vector_len = VM_Version::supports_avx512novl() ? AVX_512bit : AVX_128bit;
+  InstructionAttr attributes(vector_len, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x28);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movlhps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode(dst, src, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, src, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8(0x16);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -2125,39 +2144,36 @@
 }
 
 void Assembler::movddup(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse3(), ""));
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F2, /* no_mask_reg */ false, VEX_OPCODE_0F,
-                                      /* rex_w */ VM_Version::supports_evex(), AVX_128bit, /* legacy_mode */ false);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_128bit;
+  InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x12);
   emit_int8(0xC0 | encode);
-
 }
 
 void Assembler::kmovql(KRegister dst, KRegister src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
-  int encode = kreg_prefix_and_encode(dst, knoreg, src, VEX_SIMD_NONE,
-                                      /* no_mask_reg */ true, VEX_OPCODE_0F, /* rex_w */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = kreg_prefix_and_encode(dst, knoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x90);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::kmovql(KRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
-  int dst_enc = dst->encoding();
-  int nds_enc = 0;
-  vex_prefix(src, nds_enc, dst_enc, VEX_SIMD_NONE,
-             VEX_OPCODE_0F, /* vex_w */  true, AVX_128bit, /* legacy_mode */ true, /* no_reg_mask */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x90);
   emit_operand((Register)dst, src);
 }
 
 void Assembler::kmovql(Address dst, KRegister src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
-  int src_enc = src->encoding();
-  int nds_enc = 0;
-  vex_prefix(dst, nds_enc, src_enc, VEX_SIMD_NONE,
-             VEX_OPCODE_0F, /* vex_w */ true, AVX_128bit, /* legacy_mode */ true, /* no_reg_mask */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x90);
   emit_operand((Register)src, dst);
 }
@@ -2165,8 +2181,8 @@
 void Assembler::kmovql(KRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
   VexSimdPrefix pre = !_legacy_mode_bw ? VEX_SIMD_F2 : VEX_SIMD_NONE;
-  int encode = kreg_prefix_and_encode(dst, knoreg, src, pre, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F, /* legacy_mode */ !_legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_bw, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = kreg_prefix_and_encode(dst, knoreg, src, pre, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x92);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -2174,14 +2190,16 @@
 void Assembler::kmovdl(KRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
   VexSimdPrefix pre = !_legacy_mode_bw ? VEX_SIMD_F2 : VEX_SIMD_NONE;
-  int encode = kreg_prefix_and_encode(dst, knoreg, src, pre, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = kreg_prefix_and_encode(dst, knoreg, src, pre, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x92);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::kmovwl(KRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_evex(), ""));
-  int encode = kreg_prefix_and_encode(dst, knoreg, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = kreg_prefix_and_encode(dst, knoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x92);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -2205,190 +2223,174 @@
 
 void Assembler::movdl(XMMRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, as_XMMRegister(src->encoding()), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movdl(Register dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   // swap src/dst to get correct prefix
-  int encode = simd_prefix_and_encode(src, dst, VEX_SIMD_66, /* no_mask_reg */ true);
+  int encode = simd_prefix_and_encode(src, xnoreg, as_XMMRegister(dst->encoding()), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movdl(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_66, /* no_reg_mask */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6E);
   emit_operand(dst, src);
 }
 
 void Assembler::movdl(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_66, /* no_reg_mask */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(src, xnoreg, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7E);
   emit_operand(src, dst);
 }
 
 void Assembler::movdqa(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0x6F, dst, src, VEX_SIMD_66);
+  int vector_len = VM_Version::supports_avx512novl() ? AVX_512bit : AVX_128bit;
+  InstructionAttr attributes(vector_len, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6F);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movdqa(XMMRegister dst, Address src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_simd_arith_nonds(0x6F, dst, src, VEX_SIMD_66);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6F);
+  emit_operand(dst, src);
 }
 
 void Assembler::movdqu(XMMRegister dst, Address src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_simd_arith_nonds(0x6F, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6F);
+  emit_operand(dst, src);
 }
 
 void Assembler::movdqu(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0x6F, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6F);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movdqu(Address dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_F3, /* no_mask_reg */ false);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(src, xnoreg, dst, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 
 // Move Unaligned 256bit Vector
 void Assembler::vmovdqu(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "");
-  int vector_len = AVX_256bit;
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F3, vector_len);
+  InstructionAttr attributes(AVX_256bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmovdqu(XMMRegister dst, Address src) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  InstructionMark im(this);
-  int vector_len = AVX_256bit;
-  vex_prefix(dst, xnoreg, src, VEX_SIMD_F3, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_256bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }
 
 void Assembler::vmovdqu(Address dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  InstructionMark im(this);
-  int vector_len = AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_256bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
   // swap src<->dst for encoding
   assert(src != xnoreg, "sanity");
-  vex_prefix(src, xnoreg, dst, VEX_SIMD_F3, vector_len);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 
 // Move Unaligned EVEX enabled Vector (programmable : 8,16,32,64)
 void Assembler::evmovdqul(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 0, "");
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(dst_enc, 0, src_enc, VEX_SIMD_F3, VEX_OPCODE_0F,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evmovdqul(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 0, "");
-  InstructionMark im(this);
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  vex_prefix(dst, xnoreg, src, VEX_SIMD_F3, vector_len);
+  assert(VM_Version::supports_evex(), "");
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }
 
 void Assembler::evmovdqul(Address dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 0, "");
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(src != xnoreg, "sanity");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  // swap src<->dst for encoding
-  vex_prefix(src, xnoreg, dst, VEX_SIMD_F3, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 
 void Assembler::evmovdquq(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 0, "");
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(dst_enc, 0, src_enc, VEX_SIMD_F3, VEX_OPCODE_0F,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evmovdquq(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 2, "");
-  InstructionMark im(this);
-  _tuple_type = EVEX_FVM;
-  vex_prefix_q(dst, xnoreg, src, VEX_SIMD_F3, vector_len);
+  assert(VM_Version::supports_evex(), "");
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }
 
 void Assembler::evmovdquq(Address dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 2, "");
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(src != xnoreg, "sanity");
-  _tuple_type = EVEX_FVM;
-  // swap src<->dst for encoding
-  vex_prefix_q(src, xnoreg, dst, VEX_SIMD_F3, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
@@ -2434,13 +2436,12 @@
 // The selection is done in MacroAssembler::movdbl() and movflt().
 void Assembler::movlpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-    emit_simd_arith_q(0x12, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith(0x12, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x12);
+  emit_operand(dst, src);
 }
 
 void Assembler::movq( MMXRegister dst, Address src ) {
@@ -2466,13 +2467,9 @@
 void Assembler::movq(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    simd_prefix_q(dst, xnoreg, src, VEX_SIMD_F3, /* no_mask_reg */ true);
-  } else {
-    simd_prefix(dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7E);
   emit_operand(dst, src);
 }
@@ -2480,14 +2477,9 @@
 void Assembler::movq(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    simd_prefix(src, xnoreg, dst, VEX_SIMD_66, /* no_mask_reg */ true,
-                VEX_OPCODE_0F, /* rex_w */ true);
-  } else {
-    simd_prefix(dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(src, xnoreg, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD6);
   emit_operand(src, dst);
 }
@@ -2510,60 +2502,56 @@
 
 void Assembler::movsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x10, dst, src, VEX_SIMD_F2, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith(0x10, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x10);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_nonds_q(0x10, dst, src, VEX_SIMD_F2, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith_nonds(0x10, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x10);
+  emit_operand(dst, src);
 }
 
 void Assembler::movsd(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    simd_prefix_q(src, xnoreg, dst, VEX_SIMD_F2);
-  } else {
-    simd_prefix(src, xnoreg, dst, VEX_SIMD_F2, /* no_mask_reg */ false);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(src, xnoreg, dst, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x11);
   emit_operand(src, dst);
 }
 
 void Assembler::movss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x10, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x10);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith_nonds(0x10, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x10);
+  emit_operand(dst, src);
 }
 
 void Assembler::movss(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_F3, /* no_mask_reg */ false);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(src, xnoreg, dst, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x11);
   emit_operand(src, dst);
 }
@@ -2655,36 +2643,38 @@
 
 void Assembler::mulsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x59, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x59, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::mulsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x59, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x59, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::mulss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x59, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::mulss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x59, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::negl(Register dst) {
@@ -2985,28 +2975,35 @@
 void Assembler::packuswb(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x67, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x67);
+  emit_operand(dst, src);
 }
 
 void Assembler::packuswb(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x67, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x67);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpackuswb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "some form of AVX must be enabled");
-  emit_vex_arith(0x67, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x67);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpermq(XMMRegister dst, XMMRegister src, int imm8, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx2(), "");
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ true, vector_len);
+  InstructionAttr attributes(vector_len, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x00);
   emit_int8(0xC0 | encode);
   emit_int8(imm8);
@@ -3020,8 +3017,8 @@
 void Assembler::pcmpestri(XMMRegister dst, Address src, int imm8) {
   assert(VM_Version::supports_sse4_2(), "");
   InstructionMark im(this);
-  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false, VEX_OPCODE_0F_3A,
-              /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x61);
   emit_operand(dst, src);
   emit_int8(imm8);
@@ -3029,8 +3026,8 @@
 
 void Assembler::pcmpestri(XMMRegister dst, XMMRegister src, int imm8) {
   assert(VM_Version::supports_sse4_2(), "");
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x61);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3038,37 +3035,42 @@
 
 void Assembler::pcmpeqw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x75, dst, src, VEX_SIMD_66,
-                  false, (VM_Version::supports_avx512dq() == false));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x75);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpcmpeqw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  assert(UseAVX > 0, "some form of AVX must be enabled");
-  emit_vex_arith(0x75, dst, nds, src, VEX_SIMD_66, vector_len,
-                 false, (VM_Version::supports_avx512dq() == false));
+  assert(VM_Version::supports_avx(), "");
+  assert(!VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x75);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::pmovmskb(Register dst, XMMRegister src) {
   assert(VM_Version::supports_sse2(), "");
-  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, true, VEX_OPCODE_0F,
-                                      false, AVX_128bit, (VM_Version::supports_avx512dq() == false));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD7);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmovmskb(Register dst, XMMRegister src) {
   assert(VM_Version::supports_avx2(), "");
-  int vector_len = AVX_256bit;
-  int encode = vex_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66,
-                                     vector_len, VEX_OPCODE_0F, true, false);
+  InstructionAttr attributes(AVX_256bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD7);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::pextrd(Register dst, XMMRegister src, int imm8) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x16);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3076,8 +3078,8 @@
 
 void Assembler::pextrq(Register dst, XMMRegister src, int imm8) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, /* no_mask_reg */  true,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ true, AVX_128bit, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x16);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3085,8 +3087,8 @@
 
 void Assembler::pextrw(Register dst, XMMRegister src, int imm8) {
   assert(VM_Version::supports_sse2(), "");
-  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xC5);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3094,8 +3096,8 @@
 
 void Assembler::pinsrd(XMMRegister dst, Register src, int imm8) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x22);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3103,8 +3105,8 @@
 
 void Assembler::pinsrq(XMMRegister dst, Register src, int imm8) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ true, AVX_128bit, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x22);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3112,8 +3114,8 @@
 
 void Assembler::pinsrw(XMMRegister dst, Register src, int imm8) {
   assert(VM_Version::supports_sse2(), "");
-  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xC4);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
@@ -3121,18 +3123,18 @@
 
 void Assembler::pmovzxbw(XMMRegister dst, Address src) {
   assert(VM_Version::supports_sse4_1(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_HVM;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_66, /* no_mask_reg */ false, VEX_OPCODE_0F_38);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_HVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x30);
   emit_operand(dst, src);
 }
 
 void Assembler::pmovzxbw(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false, VEX_OPCODE_0F_38);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x30);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -3140,10 +3142,10 @@
 void Assembler::vpmovzxbw(XMMRegister dst, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
-  bool vector256 = true;
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
-  vex_prefix(src, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, false, vector256);
+  InstructionAttr attributes(AVX_256bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_HVM, /* input_size_in_bits */ EVEX_NObit);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x30);
   emit_operand(dst, src);
 }
@@ -3246,43 +3248,41 @@
 
 void Assembler::pshufb(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_ssse3(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x00);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::pshufb(XMMRegister dst, Address src) {
   assert(VM_Version::supports_ssse3(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x00);
   emit_operand(dst, src);
 }
 
 void Assembler::pshufd(XMMRegister dst, XMMRegister src, int mode) {
-  _instruction_uses_vl = true;
   assert(isByte(mode), "invalid value");
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0x70, dst, src, VEX_SIMD_66);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_128bit;
+  InstructionAttr attributes(vector_len, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x70);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(mode & 0xFF);
 }
 
 void Assembler::pshufd(XMMRegister dst, Address src, int mode) {
-  _instruction_uses_vl = true;
   assert(isByte(mode), "invalid value");
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, src, VEX_SIMD_66, /* no_mask_reg */ false);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x70);
   emit_operand(dst, src);
   emit_int8(mode & 0xFF);
@@ -3291,7 +3291,10 @@
 void Assembler::pshuflw(XMMRegister dst, XMMRegister src, int mode) {
   assert(isByte(mode), "invalid value");
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith_nonds(0x70, dst, src, VEX_SIMD_F2, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x70);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(mode & 0xFF);
 }
 
@@ -3299,12 +3302,10 @@
   assert(isByte(mode), "invalid value");
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  InstructionMark im(this);
-  simd_prefix(dst, xnoreg, src, VEX_SIMD_F2, /* no_mask_reg */ false,
-              VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x70);
   emit_operand(dst, src);
   emit_int8(mode & 0xFF);
@@ -3313,9 +3314,9 @@
 void Assembler::psrldq(XMMRegister dst, int shift) {
   // Shift left 128 bit value in dst XMMRegister by shift number of bytes.
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ false);
   // XMM3 is for /3 encoding: 66 0F 73 /3 ib
-  int encode = simd_prefix_and_encode(xmm3, dst, dst, VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  int encode = simd_prefix_and_encode(xmm3, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift);
@@ -3324,9 +3325,9 @@
 void Assembler::pslldq(XMMRegister dst, int shift) {
   // Shift left 128 bit value in dst XMMRegister by shift number of bytes.
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ false);
   // XMM7 is for /7 encoding: 66 0F 73 /7 ib
-  int encode = simd_prefix_and_encode(xmm7, dst, dst, VEX_SIMD_66, /* no_mask_reg */ true,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  int encode = simd_prefix_and_encode(xmm7, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift);
@@ -3336,16 +3337,16 @@
   assert(VM_Version::supports_sse4_1(), "");
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
   InstructionMark im(this);
-  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false,
-              VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x17);
   emit_operand(dst, src);
 }
 
 void Assembler::ptest(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x17);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -3353,20 +3354,18 @@
 void Assembler::vptest(XMMRegister dst, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
-  int vector_len = AVX_256bit;
+  InstructionAttr attributes(AVX_256bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
   // swap src<->dst for encoding
-  vex_prefix(src, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* rex_w */ false,
-             vector_len, /* legacy_mode  */ true, /* no_mask_reg */ false);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x17);
   emit_operand(dst, src);
 }
 
 void Assembler::vptest(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_256bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x17);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -3374,42 +3373,47 @@
 void Assembler::punpcklbw(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_simd_arith(0x60, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_vlbw);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_vlbw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x60);
+  emit_operand(dst, src);
 }
 
 void Assembler::punpcklbw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x60, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_vlbw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_vlbw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x60);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::punpckldq(XMMRegister dst, Address src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x62, dst, src, VEX_SIMD_66);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x62);
+  emit_operand(dst, src);
 }
 
 void Assembler::punpckldq(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x62, dst, src, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x62);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::punpcklqdq(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x6C, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x6C, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::push(int32_t imm32) {
@@ -3454,16 +3458,18 @@
 
 void Assembler::rcpps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, /* no_mask_reg */ false, VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8(0x53);
-  emit_int8(0xC0 | encode);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::rcpss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, /* no_mask_reg */ false, VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x53);
-  emit_int8(0xC0 | encode);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::rdtsc() {
@@ -3622,27 +3628,28 @@
 
 void Assembler::sqrtsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x51, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x51, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::sqrtsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x51, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x51, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_operand(dst, src);
 }
 
 void Assembler::sqrtss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x51, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::std() {
@@ -3651,11 +3658,12 @@
 
 void Assembler::sqrtss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x51, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_operand(dst, src);
 }
 
 void Assembler::stmxcsr( Address dst) {
@@ -3705,38 +3713,38 @@
 
 void Assembler::subsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5C, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5C, dst, src, VEX_SIMD_F2);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::subsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-  }
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5C, dst, src, VEX_SIMD_F2);
-  } else {
-    emit_simd_arith(0x5C, dst, src, VEX_SIMD_F2);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::subss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x5C, dst, src, VEX_SIMD_F3);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::subss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x5C, dst, src, VEX_SIMD_F3);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::testb(Register dst, int imm8) {
@@ -3765,7 +3773,7 @@
   emit_arith(0x85, 0xC0, dst, src);
 }
 
-void Assembler::testl(Register dst, Address  src) {
+void Assembler::testl(Register dst, Address src) {
   InstructionMark im(this);
   prefix(src, dst);
   emit_int8((unsigned char)0x85);
@@ -3792,36 +3800,38 @@
 
 void Assembler::ucomisd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_nonds_q(0x2E, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith_nonds(0x2E, dst, src, VEX_SIMD_66);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2E);
+  emit_operand(dst, src);
 }
 
 void Assembler::ucomisd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_nonds_q(0x2E, dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
-  } else {
-    emit_simd_arith_nonds(0x2E, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::ucomiss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith_nonds(0x2E, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2E);
+  emit_operand(dst, src);
 }
 
 void Assembler::ucomiss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith_nonds(0x2E, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x2E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::xabort(int8_t imm8) {
@@ -3903,138 +3913,162 @@
 
 void Assembler::vaddsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x58, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x58, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vaddss(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vdivsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x5E, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x5E, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vdivss(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmulsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x59, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x59, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmulss(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsubsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x5C, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x5C, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  } else {
-    emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_F2, AVX_128bit);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsubss(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_F3, AVX_128bit);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 //====================VECTOR ARITHMETIC=====================================
@@ -4042,414 +4076,433 @@
 // Float-point vector arithmetic
 
 void Assembler::addpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x58, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x58, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::addps(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x58, dst, src, VEX_SIMD_NONE);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vaddpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x58, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vaddps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vaddpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x58, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::vaddps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x58, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x58);
+  emit_operand(dst, src);
 }
 
 void Assembler::subpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5C, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x5C, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::subps(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x5C, dst, src, VEX_SIMD_NONE);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsubpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x5C, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsubps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsubpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x5C, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::vsubps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x5C, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5C);
+  emit_operand(dst, src);
 }
 
 void Assembler::mulpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x59, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x59, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::mulpd(XMMRegister dst, Address src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x59, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x59, dst, src, VEX_SIMD_66);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::mulps(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x59, dst, src, VEX_SIMD_NONE);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmulpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x59, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmulps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vmulpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x59, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::vmulps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x59, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x59);
+  emit_operand(dst, src);
 }
 
 void Assembler::divpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x5E, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x5E, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::divps(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0x5E, dst, src, VEX_SIMD_NONE);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vdivpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x5E, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vdivps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vdivpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x5E, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::vdivps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x5E, dst, nds, src, VEX_SIMD_NONE, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5E);
+  emit_operand(dst, src);
 }
 
 void Assembler::vsqrtpd(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x51, dst, xnoreg, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x51, dst, xnoreg, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsqrtpd(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x51, dst, xnoreg, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x51, dst, xnoreg, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x51);
+  emit_operand(dst, src);
 }
 
 void Assembler::andpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_avx512dq()) {
-    emit_simd_arith_q(0x54, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x54, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::andps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x54, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::andps(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x54, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_operand(dst, src);
 }
 
 void Assembler::andpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_avx512dq()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x54, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x54, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_operand(dst, src);
 }
 
 void Assembler::vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_avx512dq()) {
-    emit_vex_arith_q(0x54, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x54, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vandps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x54, dst, nds, src, VEX_SIMD_NONE, vector_len, /* no_mask_reg */ false,  /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vandpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_avx512dq()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x54, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x54, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_operand(dst, src);
 }
 
 void Assembler::vandps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x54, dst, nds, src, VEX_SIMD_NONE, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x54);
+  emit_operand(dst, src);
 }
 
 void Assembler::unpckhpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x15, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x15, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x15);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::unpcklpd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0x14, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x14, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x14);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::xorpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_avx512dq()) {
-    emit_simd_arith_q(0x57, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x57, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::xorps(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  emit_simd_arith(0x57, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::xorpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_avx512dq()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_simd_arith_q(0x57, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0x57, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_operand(dst, src);
 }
 
 void Assembler::xorps(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_simd_arith(0x57, dst, src, VEX_SIMD_NONE, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_operand(dst, src);
 }
 
 void Assembler::vxorpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_avx512dq()) {
-    emit_vex_arith_q(0x57, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x57, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vxorps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  emit_vex_arith(0x57, dst, nds, src, VEX_SIMD_NONE, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vxorpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_avx512dq()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0x57, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x57, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ true);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_operand(dst, src);
 }
 
 void Assembler::vxorps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0x57, dst, nds, src, VEX_SIMD_NONE, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_dq);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x57);
+  emit_operand(dst, src);
 }
 
 // Integer vector arithmetic
 void Assembler::vphaddw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx() && (vector_len == 0) ||
          VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38, /* legacy_mode */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x01);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -4457,280 +4510,324 @@
 void Assembler::vphaddd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx() && (vector_len == 0) ||
          VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38, /* legacy_mode */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x02);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::paddb(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xFC, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFC);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::paddw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xFD, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFD);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::paddd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xFE, dst, src, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFE);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::paddq(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0xD4, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0xD4, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD4);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::phaddw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse3(), ""));
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x01);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::phaddd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse3(), ""));
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_38, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x02);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpaddb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xFC, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFC);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpaddw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xFD, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFD);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpaddd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xFE, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFE);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpaddq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0xD4, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xD4, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD4);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpaddb(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_vex_arith(0xFC, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFC);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpaddw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_vex_arith(0xFD, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFD);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpaddd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0xFE, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFE);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpaddq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0xD4, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xD4, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD4);
+  emit_operand(dst, src);
 }
 
 void Assembler::psubb(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xF8, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF8);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psubw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xF9, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF9);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psubd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFA);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
+void Assembler::psubq(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xFA, dst, src, VEX_SIMD_66);
-}
-
-void Assembler::psubq(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
-  NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0xFB, dst, src, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0xFB, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsubb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xF8, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF8);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsubw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xF9, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF9);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsubd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xFA, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFA);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsubq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0xFB, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xFB, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsubb(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_vex_arith(0xF8, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF8);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpsubw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_vex_arith(0xF9, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF9);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpsubd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0xFA, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFA);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpsubq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-    emit_vex_arith_q(0xFB, dst, nds, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xFB, dst, nds, src, VEX_SIMD_66, vector_len);
-  }
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xFB);
+  emit_operand(dst, src);
 }
 
 void Assembler::pmullw(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xD5, dst, src, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD5);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::pmulld(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_sse4_1(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66,
-                                      /* no_mask_reg */ false, VEX_OPCODE_0F_38);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmullw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xD5, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD5);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmulld(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmullq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 2, "requires some form of AVX");
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
+  InstructionAttr attributes(vector_len, /* rex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  int encode = vex_prefix_and_encode(dst_enc, nds_enc, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmullw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FVM;
-  }
-  emit_vex_arith(0xD5, dst, nds, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD5);
+  emit_operand(dst, src);
 }
 
 void Assembler::vpmulld(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  vex_prefix(src, nds_enc, dst_enc, VEX_SIMD_66,
-             VEX_OPCODE_0F_38, /* vex_w */ false, vector_len);
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_operand(dst, src);
 }
 
 void Assembler::vpmullq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_64bit;
-  }
-  InstructionMark im(this);
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  vex_prefix(src, nds_enc, dst_enc, VEX_SIMD_66,
-             VEX_OPCODE_0F_38, /* vex_w */ true, vector_len, /* legacy_mode */ _legacy_mode_dq);
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_operand(dst, src);
 }
@@ -4738,29 +4835,29 @@
 // Shift packed integers left by specified number of bits.
 void Assembler::psllw(XMMRegister dst, int shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 71 /6 ib
-  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false, VEX_OPCODE_0F,
-                                      /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x71);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::pslld(XMMRegister dst, int shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 72 /6 ib
-  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false);
+  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x72);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::psllq(XMMRegister dst, int shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 73 /6 ib
-  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false, VEX_OPCODE_0F, /* rex_w */ true);
+  int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
@@ -4768,102 +4865,111 @@
 
 void Assembler::psllw(XMMRegister dst, XMMRegister shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xF1, dst, shift, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::pslld(XMMRegister dst, XMMRegister shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xF2, dst, shift, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psllq(XMMRegister dst, XMMRegister shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0xF3, dst, shift, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0xF3, dst, shift, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF3);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsllw(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 71 /6 ib
-  emit_vex_arith(0x71, xmm6, dst, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  int encode = vex_prefix_and_encode(xmm6->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x71);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpslld(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
+  NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 72 /6 ib
-  emit_vex_arith(0x72, xmm6, dst, src, VEX_SIMD_66, vector_len);
+  int encode = vex_prefix_and_encode(xmm6->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x72);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsllq(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM6 is for /6 encoding: 66 0F 73 /6 ib
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x73, xmm6, dst, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x73, xmm6, dst, src, VEX_SIMD_66, vector_len);
-  }
+  int encode = vex_prefix_and_encode(xmm6->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x73);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsllw(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xF1, dst, src, shift, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpslld(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xF2, dst, src, shift, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsllq(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0xF3, dst, src, shift, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xF3, dst, src, shift, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xF3);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // Shift packed integers logically right by specified number of bits.
 void Assembler::psrlw(XMMRegister dst, int shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 71 /2 ib
-  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x71);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::psrld(XMMRegister dst, int shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 72 /2 ib
-  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false);
+  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x72);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::psrlq(XMMRegister dst, int shift) {
-  _instruction_uses_vl = true;
   // Do not confuse it with psrldq SSE2 instruction which
   // shifts 128 bit value in xmm register by number of bytes.
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 73 /2 ib
-  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F, /* rex_w */ VM_Version::supports_evex());
+  int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
@@ -4871,89 +4977,98 @@
 
 void Assembler::psrlw(XMMRegister dst, XMMRegister shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xD1, dst, shift, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psrld(XMMRegister dst, XMMRegister shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xD2, dst, shift, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psrlq(XMMRegister dst, XMMRegister shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0xD3, dst, shift, VEX_SIMD_66);
-  } else {
-    emit_simd_arith(0xD3, dst, shift, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD3);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsrlw(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 71 /2 ib
-  emit_vex_arith(0x71, xmm2, dst, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  int encode = vex_prefix_and_encode(xmm2->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x71);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsrld(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 72 /2 ib
-  emit_vex_arith(0x72, xmm2, dst, src, VEX_SIMD_66, vector_len);
+  int encode = vex_prefix_and_encode(xmm2->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x72);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsrlq(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM2 is for /2 encoding: 66 0F 73 /2 ib
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0x73, xmm2, dst, src, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0x73, xmm2, dst, src, VEX_SIMD_66, vector_len);
-  }
+  int encode = vex_prefix_and_encode(xmm2->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x73);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsrlw(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xD1, dst, src, shift, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsrld(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xD2, dst, src, shift, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsrlq(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    emit_vex_arith_q(0xD3, dst, src, shift, VEX_SIMD_66, vector_len);
-  } else {
-    emit_vex_arith(0xD3, dst, src, shift, VEX_SIMD_66, vector_len);
-  }
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xD3);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // Shift packed integers arithmetically right by specified number of bits.
 void Assembler::psraw(XMMRegister dst, int shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM4 is for /4 encoding: 66 0F 71 /4 ib
-  int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
+  int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x71);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::psrad(XMMRegister dst, int shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM4 is for /4 encoding: 66 0F 72 /4 ib
-  int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66, /* no_mask_reg */ false);
+  int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x72);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
@@ -4961,128 +5076,157 @@
 
 void Assembler::psraw(XMMRegister dst, XMMRegister shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xE1, dst, shift, VEX_SIMD_66, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xE1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::psrad(XMMRegister dst, XMMRegister shift) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xE2, dst, shift, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xE2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsraw(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM4 is for /4 encoding: 66 0F 71 /4 ib
-  emit_vex_arith(0x71, xmm4, dst, src, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  int encode = vex_prefix_and_encode(xmm4->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x71);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsrad(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   // XMM4 is for /4 encoding: 66 0F 71 /4 ib
-  emit_vex_arith(0x72, xmm4, dst, src, VEX_SIMD_66, vector_len);
+  int encode = vex_prefix_and_encode(xmm4->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x72);
+  emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);
 }
 
 void Assembler::vpsraw(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xE1, dst, src, shift, VEX_SIMD_66, vector_len, /* no_mask_reg */ false, /* legacy_mode */ _legacy_mode_bw);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xE1);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpsrad(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xE2, dst, src, shift, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xE2);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 
 // logical operations packed integers
 void Assembler::pand(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xDB, dst, src, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xDB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpand(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xDB, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xDB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpand(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0xDB, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xDB);
+  emit_operand(dst, src);
 }
 
 void Assembler::pandn(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    emit_simd_arith_q(0xDF, dst, src, VEX_SIMD_66);
-  }
-  else {
-    emit_simd_arith(0xDF, dst, src, VEX_SIMD_66);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xDF);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::por(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xEB, dst, src, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpor(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xEB, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEB);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpor(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0xEB, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEB);
+  emit_operand(dst, src);
 }
 
 void Assembler::pxor(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  emit_simd_arith(0xEF, dst, src, VEX_SIMD_66);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEF);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpxor(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  emit_vex_arith(0xEF, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEF);
+  emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpxor(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(UseAVX > 0, "requires some form of AVX");
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_FV;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  emit_vex_arith(0xEF, dst, nds, src, VEX_SIMD_66, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_32bit);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  vex_prefix(src, nds_enc, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0xEF);
+  emit_operand(dst, src);
 }
 
 
 void Assembler::vinsertf128h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    vector_len = AVX_512bit;
-  }
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x18);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 128 bits
@@ -5090,45 +5234,38 @@
   emit_int8(0x01);
 }
 
-void Assembler::vinsertf64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+void Assembler::vinsertf64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  int encode = vex_prefix_and_encode(dst_enc, nds_enc, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x1A);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 256 bits
   // 0x01 - insert into upper 256 bits
-  emit_int8(0x01);
-}
-
-void Assembler::vinsertf64x4h(XMMRegister dst, Address src) {
+  emit_int8(value & 0x01);
+}
+
+void Assembler::vinsertf64x4h(XMMRegister dst, Address src, int value) {
   assert(VM_Version::supports_evex(), "");
-  _tuple_type = EVEX_T4;
-  _input_size_in_bits = EVEX_64bit;
-  InstructionMark im(this);
-  int vector_len = AVX_512bit;
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_64bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ true, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x1A);
   emit_operand(dst, src);
+  // 0x00 - insert into lower 256 bits
   // 0x01 - insert into upper 128 bits
-  emit_int8(0x01);
+  emit_int8(value & 0x01);
 }
 
 void Assembler::vinsertf32x4h(XMMRegister dst, XMMRegister nds, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  int encode = vex_prefix_and_encode(dst_enc, nds_enc, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x18);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into q0 128 bits (0..127)
@@ -5139,15 +5276,14 @@
 }
 
 void Assembler::vinsertf32x4h(XMMRegister dst, Address src, int value) {
-  assert(VM_Version::supports_evex(), "");
-  _tuple_type = EVEX_T4;
-  _input_size_in_bits = EVEX_32bit;
-  InstructionMark im(this);
-  int vector_len = AVX_512bit;
+  assert(VM_Version::supports_avx(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x18);
   emit_operand(dst, src);
   // 0x00 - insert into q0 128 bits (0..127)
@@ -5159,17 +5295,13 @@
 
 void Assembler::vinsertf128h(XMMRegister dst, Address src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T4;
-    _input_size_in_bits = EVEX_32bit;
-    vector_len = AVX_512bit;
-  }
-  InstructionMark im(this);
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x18);
   emit_operand(dst, src);
   // 0x01 - insert into upper 128 bits
@@ -5178,11 +5310,9 @@
 
 void Assembler::vextractf128h(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    vector_len = AVX_512bit;
-  }
-  int encode = vex_prefix_and_encode(src, xnoreg, dst, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 128 bits
@@ -5192,16 +5322,12 @@
 
 void Assembler::vextractf128h(Address dst, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T4;
-    _input_size_in_bits = EVEX_32bit;
-    vector_len = AVX_512bit;
-  }
-  InstructionMark im(this);
   assert(src != xnoreg, "sanity");
-  int src_enc = src->encoding();
-  vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_operand(src, dst);
   // 0x01 - extract from upper 128 bits
@@ -5210,11 +5336,10 @@
 
 void Assembler::vinserti128h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
   assert(VM_Version::supports_avx2(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    vector_len = AVX_512bit;
-  }
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x38);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 128 bits
@@ -5222,34 +5347,27 @@
   emit_int8(0x01);
 }
 
-void Assembler::vinserti64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+void Assembler::vinserti64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  int encode = vex_prefix_and_encode(dst_enc, nds_enc, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_reg_mask */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x38);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 256 bits
   // 0x01 - insert into upper 256 bits
-  emit_int8(0x01);
+  emit_int8(value & 0x01);
 }
 
 void Assembler::vinserti128h(XMMRegister dst, Address src) {
   assert(VM_Version::supports_avx2(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T4;
-    _input_size_in_bits = EVEX_32bit;
-    vector_len = AVX_512bit;
-  }
-  InstructionMark im(this);
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x38);
   emit_operand(dst, src);
   // 0x01 - insert into upper 128 bits
@@ -5258,11 +5376,9 @@
 
 void Assembler::vextracti128h(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_avx(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    vector_len = AVX_512bit;
-  }
-  int encode = vex_prefix_and_encode(src, xnoreg, dst, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x39);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - insert into lower 128 bits
@@ -5272,48 +5388,33 @@
 
 void Assembler::vextracti128h(Address dst, XMMRegister src) {
   assert(VM_Version::supports_avx2(), "");
-  int vector_len = AVX_256bit;
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T4;
-    _input_size_in_bits = EVEX_32bit;
-    vector_len = AVX_512bit;
-  }
-  InstructionMark im(this);
   assert(src != xnoreg, "sanity");
-  int src_enc = src->encoding();
-  vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x39);
   emit_operand(src, dst);
   // 0x01 - extract from upper 128 bits
   emit_int8(0x01);
 }
 
-void Assembler::vextracti64x4h(XMMRegister dst, XMMRegister src) {
+void Assembler::vextracti64x4h(XMMRegister dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x3B);
   emit_int8((unsigned char)(0xC0 | encode));
+  // 0x00 - extract from lower 256 bits
   // 0x01 - extract from upper 256 bits
-  emit_int8(0x01);
+  emit_int8(value & 0x01);
 }
 
 void Assembler::vextracti64x2h(XMMRegister dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode;
-  if (VM_Version::supports_avx512dq()) {
-    encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                   /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
-  } else {
-    encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                   /* vex_w */ false, vector_len, /* legacy_mode */ true, /* no_mask_reg */ false);
-  }
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x39);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x01 - extract from bits 255:128
@@ -5322,42 +5423,36 @@
   emit_int8(value & 0x3);
 }
 
-void Assembler::vextractf64x4h(XMMRegister dst, XMMRegister src) {
+void Assembler::vextractf64x4h(XMMRegister dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x1B);
   emit_int8((unsigned char)(0xC0 | encode));
+  // 0x00 - extract from lower 256 bits
   // 0x01 - extract from upper 256 bits
-  emit_int8(0x01);
-}
-
-void Assembler::vextractf64x4h(Address dst, XMMRegister src) {
+  emit_int8(value & 0x1);
+}
+
+void Assembler::vextractf64x4h(Address dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  _tuple_type = EVEX_T4;
-  _input_size_in_bits = EVEX_64bit;
-  InstructionMark im(this);
-  int vector_len = AVX_512bit;
   assert(src != xnoreg, "sanity");
-  int src_enc = src->encoding();
-  vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-             /* vex_w */ true, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4,/* input_size_in_bits */  EVEX_64bit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x1B);
   emit_operand(src, dst);
+  // 0x00 - extract from lower 256 bits
   // 0x01 - extract from upper 256 bits
-  emit_int8(0x01);
+  emit_int8(value & 0x01);
 }
 
 void Assembler::vextractf32x4h(XMMRegister dst, XMMRegister src, int value) {
-  assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  assert(VM_Version::supports_avx(), "");
+  int vector_len = VM_Version::supports_evex() ? AVX_512bit : AVX_256bit;
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - extract from bits 127:0
@@ -5369,13 +5464,11 @@
 
 void Assembler::vextractf32x4h(Address dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  _tuple_type = EVEX_T4;
-  _input_size_in_bits = EVEX_32bit;
-  InstructionMark im(this);
-  int vector_len = AVX_512bit;
   assert(src != xnoreg, "sanity");
-  int src_enc = src->encoding();
-  vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, /* vex_w */ false, vector_len);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T4, /* input_size_in_bits */ EVEX_32bit);
+  vex_prefix(dst, 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_operand(src, dst);
   // 0x00 - extract from bits 127:0
@@ -5387,11 +5480,8 @@
 
 void Assembler::vextractf64x2h(XMMRegister dst, XMMRegister src, int value) {
   assert(VM_Version::supports_evex(), "");
-  int vector_len = AVX_512bit;
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int encode = vex_prefix_and_encode(src_enc, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ !_legacy_mode_dq, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x01 - extract from bits 255:128
@@ -5402,10 +5492,9 @@
 
 // duplicate 4-bytes integer data from src into 8 locations in dest
 void Assembler::vpbroadcastd(XMMRegister dst, XMMRegister src) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int vector_len = AVX_256bit;
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38);
+  assert(VM_Version::supports_avx2(), "");
+  InstructionAttr attributes(AVX_256bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -5413,189 +5502,170 @@
 // duplicate 2-bytes integer data from src into 16 locations in dest
 void Assembler::vpbroadcastw(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_avx2(), "");
-  bool vector_len = AVX_256bit;
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66,
-                                     vector_len, VEX_OPCODE_0F_38, false);
+  InstructionAttr attributes(AVX_256bit, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x79);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 1-byte integer data from src into 16||32|64 locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastb(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x78);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastb(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_8bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_8bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x78);
   emit_operand(dst, src);
 }
 
 // duplicate 2-byte integer data from src into 8|16||32 locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastw(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x79);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastw(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_16bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_16bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x79);
   emit_operand(dst, src);
 }
 
 // duplicate 4-byte integer data from src into 4|8|16 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastd(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_38);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastd(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_32bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ false, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x58);
   emit_operand(dst, src);
 }
 
 // duplicate 8-byte integer data from src into 4|8|16 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastq(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /* no_mask_reg */ false);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastq(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_64bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
   // swap src<->dst for encoding
-  vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ true, vector_len);
+  vex_prefix(src, dst->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);
 }
 
 // duplicate single precision fp from src into 4|8|16 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastss(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x18);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastss(XMMRegister dst, Address src, int vector_len) {
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_32bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
   // swap src<->dst for encoding
-  vex_prefix(src, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ false, vector_len);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x18);
   emit_operand(dst, src);
 }
 
 // duplicate double precision fp from src into 2|4|8 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastsd(XMMRegister dst, XMMRegister src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /*vex_w */ true, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  assert(VM_Version::supports_evex(), "");
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastsd(XMMRegister dst, Address src, int vector_len) {
-  _instruction_uses_vl = true;
-  assert(UseAVX > 1, "");
-  _tuple_type = EVEX_T1S;
-  _input_size_in_bits = EVEX_64bit;
-  InstructionMark im(this);
+  assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
-  int dst_enc = dst->encoding();
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
   // swap src<->dst for encoding
-  vex_prefix(src, 0, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, /* vex_w */ true, vector_len);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x19);
   emit_operand(dst, src);
 }
 
 // duplicate 1-byte integer data from src into 16||32|64 locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastb(XMMRegister dst, Register src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /*vex_w */ false, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x7A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 2-byte integer data from src into 8|16||32 locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastw(XMMRegister dst, Register src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x7B);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 4-byte integer data from src into 4|8|16 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastd(XMMRegister dst, Register src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ false, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x7C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 8-byte integer data from src into 4|8|16 locations in dest : requires AVX512VL
 void Assembler::evpbroadcastq(XMMRegister dst, Register src, int vector_len) {
-  _instruction_uses_vl = true;
   assert(VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38,
-                                     /* vex_w */ true, vector_len, /* legacy_mode */ false, /*no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x7C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -5603,8 +5673,8 @@
 // Carry-Less Multiplication Quadword
 void Assembler::pclmulqdq(XMMRegister dst, XMMRegister src, int mask) {
   assert(VM_Version::supports_clmul(), "");
-  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, /* no_mask_reg */ false,
-                                      VEX_OPCODE_0F_3A, /* rex_w */ false, AVX_128bit, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x44);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8((unsigned char)mask);
@@ -5613,8 +5683,9 @@
 // Carry-Less Multiplication Quadword
 void Assembler::vpclmulqdq(XMMRegister dst, XMMRegister nds, XMMRegister src, int mask) {
   assert(VM_Version::supports_avx() && VM_Version::supports_clmul(), "");
-  int vector_len = AVX_128bit;
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A, /* legacy_mode */ true);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x44);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8((unsigned char)mask);
@@ -5622,11 +5693,9 @@
 
 void Assembler::vzeroupper() {
   assert(VM_Version::supports_avx(), "");
-  if (UseAVX < 3)
-  {
-    (void)vex_prefix_and_encode(xmm0, xmm0, xmm0, VEX_SIMD_NONE);
-    emit_int8(0x77);
-  }
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  (void)vex_prefix_and_encode(0, 0, 0, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x77);
 }
 
 
@@ -6130,8 +6199,7 @@
   if (pre > 0) {
     emit_int8(simd_pre[pre]);
   }
-  int encode = (rex_w) ? prefixq_and_encode(dst_enc, src_enc) :
-                          prefix_and_encode(dst_enc, src_enc);
+  int encode = (rex_w) ? prefixq_and_encode(dst_enc, src_enc) : prefix_and_encode(dst_enc, src_enc);
   if (opc > 0) {
     emit_int8(0x0F);
     int opc2 = simd_opc[opc];
@@ -6143,7 +6211,9 @@
 }
 
 
-void Assembler::vex_prefix(bool vex_r, bool vex_b, bool vex_x, bool vex_w, int nds_enc, VexSimdPrefix pre, VexOpcode opc, int vector_len) {
+void Assembler::vex_prefix(bool vex_r, bool vex_b, bool vex_x, int nds_enc, VexSimdPrefix pre, VexOpcode opc) {
+  int vector_len = _attributes->get_vector_len();
+  bool vex_w = _attributes->is_rex_vex_w();
   if (vex_b || vex_x || vex_w || (opc == VEX_OPCODE_0F_38) || (opc == VEX_OPCODE_0F_3A)) {
     prefix(VEX_3bytes);
 
@@ -6167,13 +6237,13 @@
 }
 
 // This is a 4 byte encoding
-void Assembler::evex_prefix(bool vex_r, bool vex_b, bool vex_x, bool vex_w, bool evex_r, bool evex_v,
-                            int nds_enc, VexSimdPrefix pre, VexOpcode opc,
-                            bool is_extended_context, bool is_merge_context,
-                            int vector_len, bool no_mask_reg ){
+void Assembler::evex_prefix(bool vex_r, bool vex_b, bool vex_x, bool evex_r, bool evex_v, int nds_enc, VexSimdPrefix pre, VexOpcode opc){
   // EVEX 0x62 prefix
   prefix(EVEX_4bytes);
-  _evex_encoding = (vex_w ? VEX_W : 0) | (evex_r ? EVEX_Rb : 0);
+  bool vex_w = _attributes->is_rex_vex_w();
+  int evex_encoding = (vex_w ? VEX_W : 0);
+  // EVEX.b is not currently used for broadcast of single element or data rounding modes
+  _attributes->set_evex_encoding(evex_encoding);
 
   // P0: byte 2, initialized to RXBR`00mm
   // instead of not'd
@@ -6195,214 +6265,127 @@
   emit_int8(byte3);
 
   // P2: byte 4 as zL'Lbv'aaa
-  int byte4 = (no_mask_reg) ? 0 : 1; // kregs are implemented in the low 3 bits as aaa (hard code k1, it will be initialized for now)
+  int byte4 = (_attributes->is_no_reg_mask()) ? 0 : 1; // kregs are implemented in the low 3 bits as aaa (hard code k1, it will be initialized for now)
   // EVEX.v` for extending EVEX.vvvv or VIDX
   byte4 |= (evex_v ? 0: EVEX_V);
   // third EXEC.b for broadcast actions
-  byte4 |= (is_extended_context ? EVEX_Rb : 0);
+  byte4 |= (_attributes->is_extended_context() ? EVEX_Rb : 0);
   // fourth EVEX.L'L for vector length : 0 is 128, 1 is 256, 2 is 512, currently we do not support 1024
-  byte4 |= ((vector_len) & 0x3) << 5;
+  byte4 |= ((_attributes->get_vector_len())& 0x3) << 5;
   // last is EVEX.z for zero/merge actions
-  byte4 |= (is_merge_context ? EVEX_Z : 0);
+  byte4 |= (_attributes->is_clear_context() ? EVEX_Z : 0);
   emit_int8(byte4);
 }
 
-void Assembler::vex_prefix(Address adr, int nds_enc, int xreg_enc, VexSimdPrefix pre,
-                           VexOpcode opc, bool vex_w, int vector_len, bool legacy_mode, bool no_mask_reg) {
+void Assembler::vex_prefix(Address adr, int nds_enc, int xreg_enc, VexSimdPrefix pre, VexOpcode opc, InstructionAttr *attributes) {
   bool vex_r = ((xreg_enc & 8) == 8) ? 1 : 0;
   bool vex_b = adr.base_needs_rex();
   bool vex_x = adr.index_needs_rex();
-  _avx_vector_len = vector_len;
+  set_attributes(attributes);
+  attributes->set_current_assembler(this);
 
   // if vector length is turned off, revert to AVX for vectors smaller than 512-bit
-  if (_legacy_mode_vl && _instruction_uses_vl) {
-    switch (vector_len) {
+  if ((UseAVX > 2) && _legacy_mode_vl && attributes->uses_vl()) {
+    switch (attributes->get_vector_len()) {
     case AVX_128bit:
     case AVX_256bit:
-      legacy_mode = true;
+      attributes->set_is_legacy_mode();
       break;
     }
   }
 
-  if ((UseAVX > 2) && (legacy_mode == false))
+  if ((UseAVX > 2) && !attributes->is_legacy_mode())
   {
     bool evex_r = (xreg_enc >= 16);
     bool evex_v = (nds_enc >= 16);
-    _is_evex_instruction = true;
-    evex_prefix(vex_r, vex_b, vex_x, vex_w, evex_r, evex_v, nds_enc, pre, opc, false, false, vector_len, no_mask_reg);
+    attributes->set_is_evex_instruction();
+    evex_prefix(vex_r, vex_b, vex_x, evex_r, evex_v, nds_enc, pre, opc);
   } else {
-    vex_prefix(vex_r, vex_b, vex_x, vex_w, nds_enc, pre, opc, vector_len);
+    vex_prefix(vex_r, vex_b, vex_x, nds_enc, pre, opc);
   }
-  _instruction_uses_vl = false;
-}
-
-int Assembler::vex_prefix_and_encode(int dst_enc, int nds_enc, int src_enc, VexSimdPrefix pre, VexOpcode opc,
-                                     bool vex_w, int vector_len, bool legacy_mode, bool no_mask_reg ) {
+}
+
+int Assembler::vex_prefix_and_encode(int dst_enc, int nds_enc, int src_enc, VexSimdPrefix pre, VexOpcode opc, InstructionAttr *attributes) {
   bool vex_r = ((dst_enc & 8) == 8) ? 1 : 0;
   bool vex_b = ((src_enc & 8) == 8) ? 1 : 0;
   bool vex_x = false;
-  _avx_vector_len = vector_len;
+  set_attributes(attributes);
+  attributes->set_current_assembler(this);
 
   // if vector length is turned off, revert to AVX for vectors smaller than 512-bit
-  if (_legacy_mode_vl && _instruction_uses_vl) {
-    switch (vector_len) {
+  if ((UseAVX > 2) && _legacy_mode_vl && attributes->uses_vl()) {
+    switch (attributes->get_vector_len()) {
     case AVX_128bit:
     case AVX_256bit:
-      legacy_mode = true;
+      if ((dst_enc >= 16) | (nds_enc >= 16) | (src_enc >= 16)) {
+        // up propagate arithmetic instructions to meet RA requirements
+        attributes->set_vector_len(AVX_512bit);
+      } else {
+        attributes->set_is_legacy_mode();
+      }
       break;
     }
   }
 
-  if ((UseAVX > 2) && (legacy_mode == false))
+  if ((UseAVX > 2) && !attributes->is_legacy_mode())
   {
     bool evex_r = (dst_enc >= 16);
     bool evex_v = (nds_enc >= 16);
     // can use vex_x as bank extender on rm encoding
     vex_x = (src_enc >= 16);
-    evex_prefix(vex_r, vex_b, vex_x, vex_w, evex_r, evex_v, nds_enc, pre, opc, false, false, vector_len, no_mask_reg);
+    attributes->set_is_evex_instruction();
+    evex_prefix(vex_r, vex_b, vex_x, evex_r, evex_v, nds_enc, pre, opc);
   } else {
-    vex_prefix(vex_r, vex_b, vex_x, vex_w, nds_enc, pre, opc, vector_len);
+    vex_prefix(vex_r, vex_b, vex_x, nds_enc, pre, opc);
   }
 
-  _instruction_uses_vl = false;
-
   // return modrm byte components for operands
   return (((dst_enc & 7) << 3) | (src_enc & 7));
 }
 
 
 void Assembler::simd_prefix(XMMRegister xreg, XMMRegister nds, Address adr, VexSimdPrefix pre,
-                            bool no_mask_reg, VexOpcode opc, bool rex_w, int vector_len, bool legacy_mode) {
+                            VexOpcode opc, InstructionAttr *attributes) {
   if (UseAVX > 0) {
     int xreg_enc = xreg->encoding();
-    int  nds_enc = nds->is_valid() ? nds->encoding() : 0;
-    vex_prefix(adr, nds_enc, xreg_enc, pre, opc, rex_w, vector_len, legacy_mode, no_mask_reg);
+    int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+    vex_prefix(adr, nds_enc, xreg_enc, pre, opc, attributes);
   } else {
     assert((nds == xreg) || (nds == xnoreg), "wrong sse encoding");
-    rex_prefix(adr, xreg, pre, opc, rex_w);
+    rex_prefix(adr, xreg, pre, opc, attributes->is_rex_vex_w());
   }
 }
 
 int Assembler::simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src, VexSimdPrefix pre,
-                                      bool no_mask_reg, VexOpcode opc, bool rex_w, int vector_len, bool legacy_mode) {
+                                      VexOpcode opc, InstructionAttr *attributes) {
   int dst_enc = dst->encoding();
   int src_enc = src->encoding();
   if (UseAVX > 0) {
     int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-    return vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, opc, rex_w, vector_len, legacy_mode, no_mask_reg);
+    return vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, opc, attributes);
   } else {
     assert((nds == dst) || (nds == src) || (nds == xnoreg), "wrong sse encoding");
-    return rex_prefix_and_encode(dst_enc, src_enc, pre, opc, rex_w);
+    return rex_prefix_and_encode(dst_enc, src_enc, pre, opc, attributes->is_rex_vex_w());
   }
 }
 
 int Assembler::kreg_prefix_and_encode(KRegister dst, KRegister nds, KRegister src, VexSimdPrefix pre,
-                                      bool no_mask_reg, VexOpcode opc, bool rex_w, int vector_len) {
-  int dst_enc = dst->encoding();
-  int src_enc = src->encoding();
+                                      VexOpcode opc, InstructionAttr *attributes) {
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  return vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, opc, rex_w, vector_len, true, no_mask_reg);
+  return vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), pre, opc, attributes);
 }
 
 int Assembler::kreg_prefix_and_encode(KRegister dst, KRegister nds, Register src, VexSimdPrefix pre,
-                                      bool no_mask_reg, VexOpcode opc, bool rex_w, int vector_len) {
-  int dst_enc = dst->encoding();
-  int src_enc = src->encoding();
+                                      VexOpcode opc, InstructionAttr *attributes) {
   int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  return vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, opc, rex_w, vector_len, true, no_mask_reg);
-}
-
-void Assembler::emit_simd_arith(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg, bool legacy_mode) {
-  InstructionMark im(this);
-  simd_prefix(dst, dst, src, pre, no_mask_reg, VEX_OPCODE_0F, false, AVX_128bit, legacy_mode);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_simd_arith_q(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg) {
-  InstructionMark im(this);
-  simd_prefix_q(dst, dst, src, pre, no_mask_reg);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_simd_arith(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg, bool legacy_mode) {
-  int encode = simd_prefix_and_encode(dst, dst, src, pre, no_mask_reg, VEX_OPCODE_0F, false, AVX_128bit, legacy_mode);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
-}
-
-void Assembler::emit_simd_arith_q(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg) {
-  int encode = simd_prefix_and_encode(dst, dst, src, pre, no_mask_reg, VEX_OPCODE_0F, true, AVX_128bit);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
-}
-
-// Versions with no second source register (non-destructive source).
-void Assembler::emit_simd_arith_nonds(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool opNoRegMask) {
-  InstructionMark im(this);
-  simd_prefix(dst, xnoreg, src, pre, opNoRegMask);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_simd_arith_nonds_q(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool opNoRegMask) {
-  InstructionMark im(this);
-  simd_prefix_q(dst, xnoreg, src, pre, opNoRegMask);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_simd_arith_nonds(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg, bool legacy_mode) {
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, pre, no_mask_reg, VEX_OPCODE_0F, false, AVX_128bit, legacy_mode);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
-}
-
-void Assembler::emit_simd_arith_nonds_q(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg) {
-  int encode = simd_prefix_and_encode(dst, xnoreg, src, pre, no_mask_reg, VEX_OPCODE_0F, true);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
-}
-
-// 3-operands AVX instructions
-void Assembler::emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds, Address src,
-                               VexSimdPrefix pre, int vector_len, bool no_mask_reg, bool legacy_mode) {
-  InstructionMark im(this);
-  vex_prefix(dst, nds, src, pre, vector_len, no_mask_reg, legacy_mode);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_vex_arith_q(int opcode, XMMRegister dst, XMMRegister nds,
-                                 Address src, VexSimdPrefix pre, int vector_len, bool no_mask_reg) {
-  InstructionMark im(this);
-  vex_prefix_q(dst, nds, src, pre, vector_len, no_mask_reg);
-  emit_int8(opcode);
-  emit_operand(dst, src);
-}
-
-void Assembler::emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds, XMMRegister src,
-                               VexSimdPrefix pre, int vector_len, bool no_mask_reg, bool legacy_mode) {
-  int encode = vex_prefix_and_encode(dst, nds, src, pre, vector_len, VEX_OPCODE_0F, legacy_mode, no_mask_reg);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
-}
-
-void Assembler::emit_vex_arith_q(int opcode, XMMRegister dst, XMMRegister nds, XMMRegister src,
-                                 VexSimdPrefix pre, int vector_len, bool no_mask_reg) {
-  int src_enc = src->encoding();
-  int dst_enc = dst->encoding();
-  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-  int encode = vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, VEX_OPCODE_0F, true, vector_len, false, no_mask_reg);
-  emit_int8(opcode);
-  emit_int8((unsigned char)(0xC0 | encode));
+  return vex_prefix_and_encode(dst->encoding(), nds_enc, src->encoding(), pre, opc, attributes);
 }
 
 void Assembler::cmppd(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   assert(!VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector_len, VEX_OPCODE_0F, /* no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, nds, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xC2);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8((unsigned char)(0xF & cop));
@@ -6411,7 +6394,9 @@
 void Assembler::vpblendd(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   assert(!VM_Version::supports_evex(), "");
-  int encode = vex_prefix_and_encode(dst, nds, src1, VEX_SIMD_66, vector_len, VEX_OPCODE_0F_3A, /* no_mask_reg */ false);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int nds_enc = nds->is_valid() ? nds->encoding() : 0;
+  int encode = vex_prefix_and_encode(dst->encoding(), nds_enc, src1->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8((unsigned char)0x4B);
   emit_int8((unsigned char)(0xC0 | encode));
   int src2_enc = src2->encoding();
@@ -6430,7 +6415,7 @@
   leal(dst, src);
 }
 
-void Assembler::mov_literal32(Address dst, int32_t imm32,  RelocationHolder const& rspec) {
+void Assembler::mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec) {
   InstructionMark im(this);
   emit_int8((unsigned char)0xC7);
   emit_operand(rax, dst);
@@ -6948,15 +6933,17 @@
 
 void Assembler::andnq(Register dst, Register src1, Register src2) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_q_legacy(dst, src1, src2);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), src1->encoding(), src2->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF2);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::andnq(Register dst, Register src1, Address src2) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_q_legacy(dst, src1, src2);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src2, src1->encoding(), dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF2);
   emit_operand(dst, src2);
 }
@@ -6983,45 +6970,51 @@
 
 void Assembler::blsiq(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_q_legacy(rbx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rbx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsiq(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_q_legacy(rbx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rbx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rbx, src);
 }
 
 void Assembler::blsmskq(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_q_legacy(rdx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rdx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsmskq(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_q_legacy(rdx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rdx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rdx, src);
 }
 
 void Assembler::blsrq(Register dst, Register src) {
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_0F38_and_encode_q_legacy(rcx, dst, src);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(rcx->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::blsrq(Register dst, Address src) {
-  InstructionMark im(this);
   assert(VM_Version::supports_bmi1(), "bit manipulation instructions not supported");
-  vex_prefix_0F38_q_legacy(rcx, dst, src);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  vex_prefix(src, dst->encoding(), rcx->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_operand(rcx, src);
 }
@@ -7095,45 +7088,44 @@
 
 void Assembler::cvtsi2sdq(XMMRegister dst, Register src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode_q(dst, dst, src, VEX_SIMD_F2, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, dst, as_XMMRegister(src->encoding()), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsi2sdq(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix_q(dst, dst, src, VEX_SIMD_F2, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_operand(dst, src);
 }
 
 void Assembler::cvtsi2ssq(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  if (VM_Version::supports_evex()) {
-    _tuple_type = EVEX_T1S;
-    _input_size_in_bits = EVEX_32bit;
-  }
-  InstructionMark im(this);
-  simd_prefix_q(dst, dst, src, VEX_SIMD_F3, /* no_mask_reg */ true);
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  simd_prefix(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2A);
   emit_operand(dst, src);
 }
 
 void Assembler::cvttsd2siq(Register dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvttss2siq(Register dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse(), ""));
-  int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -7316,7 +7308,8 @@
 void Assembler::movdq(XMMRegister dst, Register src) {
   // table D-1 says MMX/SSE2
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
-  int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_66, /* no_mask_reg */ true);
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = simd_prefix_and_encode(dst, xnoreg, as_XMMRegister(src->encoding()), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -7324,8 +7317,9 @@
 void Assembler::movdq(Register dst, XMMRegister src) {
   // table D-1 says MMX/SSE2
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   // swap src/dst to get correct prefix
-  int encode = simd_prefix_and_encode_q(src, dst, VEX_SIMD_66, /* no_mask_reg */ true);
+  int encode = simd_prefix_and_encode(src, xnoreg, as_XMMRegister(dst->encoding()), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -7458,8 +7452,8 @@
 
 void Assembler::mulxq(Register dst1, Register dst2, Register src) {
   assert(VM_Version::supports_bmi2(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_and_encode(dst1->encoding(), dst2->encoding(), src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F_38,
-                                    /* vex_w */ true, AVX_128bit, /* legacy_mode */ true, /* no_mask_reg */ false);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst1->encoding(), dst2->encoding(), src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F_38, &attributes);
   emit_int8((unsigned char)0xF6);
   emit_int8((unsigned char)(0xC0 | encode));
 }
@@ -7621,8 +7615,8 @@
 
 void Assembler::rorxq(Register dst, Register src, int imm8) {
   assert(VM_Version::supports_bmi2(), "bit manipulation instructions not supported");
-  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F_3A,
-                                     /* vex_w */ true, AVX_128bit, /* legacy_mode */ true, /* no_mask_reg */ false);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F_3A, &attributes);
   emit_int8((unsigned char)0xF0);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(imm8);
--- a/src/cpu/x86/vm/assembler_x86.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/assembler_x86.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -438,6 +438,8 @@
 
 };
 
+class InstructionAttr;
+
 // 64-bit refect the fxsave size which is 512 bytes and the new xsave area on EVEX which is another 2176 bytes
 // See fxsave and xsave(EVEX enabled) documentation for layout
 const int FPUStateSizeInWords = NOT_LP64(27) LP64_ONLY(2688 / wordSize);
@@ -568,7 +570,8 @@
     EVEX_8bit  = 0,
     EVEX_16bit = 1,
     EVEX_32bit = 2,
-    EVEX_64bit = 3
+    EVEX_64bit = 3,
+    EVEX_NObit = 4
   };
 
   enum WhichOperand {
@@ -598,16 +601,12 @@
 
 private:
 
-  int _evex_encoding;
-  int _input_size_in_bits;
-  int _avx_vector_len;
-  int _tuple_type;
-  bool _is_evex_instruction;
   bool _legacy_mode_bw;
   bool _legacy_mode_dq;
   bool _legacy_mode_vl;
   bool _legacy_mode_vlbw;
-  bool _instruction_uses_vl;
+
+  class InstructionAttr *_attributes;
 
   // 64bit prefixes
   int prefix_and_encode(int reg_enc, bool byteinst = false);
@@ -637,181 +636,30 @@
   int  rex_prefix_and_encode(int dst_enc, int src_enc,
                              VexSimdPrefix pre, VexOpcode opc, bool rex_w);
 
-  void vex_prefix(bool vex_r, bool vex_b, bool vex_x, bool vex_w,
-                  int nds_enc, VexSimdPrefix pre, VexOpcode opc,
-                  int vector_len);
+  void vex_prefix(bool vex_r, bool vex_b, bool vex_x, int nds_enc, VexSimdPrefix pre, VexOpcode opc);
 
-  void evex_prefix(bool vex_r, bool vex_b, bool vex_x, bool vex_w, bool evex_r, bool evex_v,
-                   int nds_enc, VexSimdPrefix pre, VexOpcode opc,
-                   bool is_extended_context, bool is_merge_context,
-                   int vector_len, bool no_mask_reg );
+  void evex_prefix(bool vex_r, bool vex_b, bool vex_x, bool evex_r, bool evex_v,
+                   int nds_enc, VexSimdPrefix pre, VexOpcode opc);
 
   void vex_prefix(Address adr, int nds_enc, int xreg_enc,
                   VexSimdPrefix pre, VexOpcode opc,
-                  bool vex_w, int vector_len,
-                  bool legacy_mode = false, bool no_mask_reg = false);
-
-  void vex_prefix(XMMRegister dst, XMMRegister nds, Address src,
-                  VexSimdPrefix pre, int vector_len = AVX_128bit,
-                  bool no_mask_reg = false, bool legacy_mode = false) {
-    int dst_enc = dst->encoding();
-    int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-    vex_prefix(src, nds_enc, dst_enc, pre, VEX_OPCODE_0F, false, vector_len, legacy_mode, no_mask_reg);
-  }
-
-  void vex_prefix_q(XMMRegister dst, XMMRegister nds, Address src,
-                    VexSimdPrefix pre, int vector_len = AVX_128bit,
-                    bool no_mask_reg = false) {
-    int dst_enc = dst->encoding();
-    int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-    vex_prefix(src, nds_enc, dst_enc, pre, VEX_OPCODE_0F, true, vector_len, false, no_mask_reg);
-  }
-
-  void vex_prefix_0F38(Register dst, Register nds, Address src, bool no_mask_reg = false) {
-    bool vex_w = false;
-    int vector_len = AVX_128bit;
-    vex_prefix(src, nds->encoding(), dst->encoding(),
-               VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w,
-               vector_len, no_mask_reg);
-  }
-
-  void vex_prefix_0F38_legacy(Register dst, Register nds, Address src, bool no_mask_reg = false) {
-    bool vex_w = false;
-    int vector_len = AVX_128bit;
-    vex_prefix(src, nds->encoding(), dst->encoding(),
-               VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w,
-               vector_len, true, no_mask_reg);
-  }
-
-  void vex_prefix_0F38_q(Register dst, Register nds, Address src, bool no_mask_reg = false) {
-    bool vex_w = true;
-    int vector_len = AVX_128bit;
-    vex_prefix(src, nds->encoding(), dst->encoding(),
-               VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w,
-               vector_len, no_mask_reg);
-  }
-
-  void vex_prefix_0F38_q_legacy(Register dst, Register nds, Address src, bool no_mask_reg = false) {
-    bool vex_w = true;
-    int vector_len = AVX_128bit;
-    vex_prefix(src, nds->encoding(), dst->encoding(),
-               VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w,
-               vector_len, true, no_mask_reg);
-  }
+                  InstructionAttr *attributes);
 
   int  vex_prefix_and_encode(int dst_enc, int nds_enc, int src_enc,
                              VexSimdPrefix pre, VexOpcode opc,
-                             bool vex_w, int vector_len,
-                             bool legacy_mode, bool no_mask_reg);
+                             InstructionAttr *attributes);
 
-  int  vex_prefix_0F38_and_encode(Register dst, Register nds, Register src, bool no_mask_reg = false) {
-    bool vex_w = false;
-    int vector_len = AVX_128bit;
-    return vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(),
-                                 VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w, vector_len,
-                                 false, no_mask_reg);
-  }
+  void simd_prefix(XMMRegister xreg, XMMRegister nds, Address adr, VexSimdPrefix pre,
+                   VexOpcode opc, InstructionAttr *attributes);
 
-  int  vex_prefix_0F38_and_encode_legacy(Register dst, Register nds, Register src, bool no_mask_reg = false) {
-    bool vex_w = false;
-    int vector_len = AVX_128bit;
-    return vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(),
-      VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w, vector_len,
-      true, no_mask_reg);
-  }
+  int simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src, VexSimdPrefix pre,
+                             VexOpcode opc, InstructionAttr *attributes);
 
-  int  vex_prefix_0F38_and_encode_q(Register dst, Register nds, Register src, bool no_mask_reg = false) {
-    bool vex_w = true;
-    int vector_len = AVX_128bit;
-    return vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(),
-                                 VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w, vector_len,
-                                 false, no_mask_reg);
-  }
+  int kreg_prefix_and_encode(KRegister dst, KRegister nds, KRegister src, VexSimdPrefix pre,
+                             VexOpcode opc, InstructionAttr *attributes);
 
-  int  vex_prefix_0F38_and_encode_q_legacy(Register dst, Register nds, Register src, bool no_mask_reg = false) {
-    bool vex_w = true;
-    int vector_len = AVX_128bit;
-    return vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(),
-                                 VEX_SIMD_NONE, VEX_OPCODE_0F_38, vex_w, vector_len,
-                                 true, no_mask_reg);
-  }
-
-  int  vex_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src,
-                             VexSimdPrefix pre, int vector_len = AVX_128bit,
-                             VexOpcode opc = VEX_OPCODE_0F, bool legacy_mode = false,
-                             bool no_mask_reg = false) {
-    int src_enc = src->encoding();
-    int dst_enc = dst->encoding();
-    int nds_enc = nds->is_valid() ? nds->encoding() : 0;
-    return vex_prefix_and_encode(dst_enc, nds_enc, src_enc, pre, opc, false, vector_len, legacy_mode, no_mask_reg);
-  }
-
-  void simd_prefix(XMMRegister xreg, XMMRegister nds, Address adr,
-                   VexSimdPrefix pre, bool no_mask_reg, VexOpcode opc = VEX_OPCODE_0F,
-                   bool rex_w = false, int vector_len = AVX_128bit, bool legacy_mode = false);
-
-  void simd_prefix(XMMRegister dst, Address src, VexSimdPrefix pre,
-                   bool no_mask_reg, VexOpcode opc = VEX_OPCODE_0F) {
-    simd_prefix(dst, xnoreg, src, pre, no_mask_reg, opc);
-  }
-
-  void simd_prefix(Address dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg) {
-    simd_prefix(src, dst, pre, no_mask_reg);
-  }
-  void simd_prefix_q(XMMRegister dst, XMMRegister nds, Address src,
-                     VexSimdPrefix pre, bool no_mask_reg = false) {
-    bool rex_w = true;
-    simd_prefix(dst, nds, src, pre, no_mask_reg, VEX_OPCODE_0F, rex_w);
-  }
-
-  int simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src,
-                             VexSimdPrefix pre, bool no_mask_reg,
-                             VexOpcode opc = VEX_OPCODE_0F,
-                             bool rex_w = false, int vector_len = AVX_128bit,
-                             bool legacy_mode = false);
-
-  int kreg_prefix_and_encode(KRegister dst, KRegister nds, KRegister src,
-                             VexSimdPrefix pre, bool no_mask_reg,
-                             VexOpcode opc = VEX_OPCODE_0F,
-                             bool rex_w = false, int vector_len = AVX_128bit);
-
-  int kreg_prefix_and_encode(KRegister dst, KRegister nds, Register src,
-                             VexSimdPrefix pre, bool no_mask_reg,
-                             VexOpcode opc = VEX_OPCODE_0F,
-                             bool rex_w = false, int vector_len = AVX_128bit);
-
-  // Move/convert 32-bit integer value.
-  int simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, Register src,
-                             VexSimdPrefix pre, bool no_mask_reg) {
-    // It is OK to cast from Register to XMMRegister to pass argument here
-    // since only encoding is used in simd_prefix_and_encode() and number of
-    // Gen and Xmm registers are the same.
-    return simd_prefix_and_encode(dst, nds, as_XMMRegister(src->encoding()), pre, no_mask_reg, VEX_OPCODE_0F);
-  }
-  int simd_prefix_and_encode(XMMRegister dst, Register src, VexSimdPrefix pre, bool no_mask_reg) {
-    return simd_prefix_and_encode(dst, xnoreg, src, pre, no_mask_reg);
-  }
-  int simd_prefix_and_encode(Register dst, XMMRegister src,
-                             VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F,
-                             bool no_mask_reg = false) {
-    return simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, pre, no_mask_reg, opc);
-  }
-
-  // Move/convert 64-bit integer value.
-  int simd_prefix_and_encode_q(XMMRegister dst, XMMRegister nds, Register src,
-                               VexSimdPrefix pre, bool no_mask_reg = false) {
-    bool rex_w = true;
-    return simd_prefix_and_encode(dst, nds, as_XMMRegister(src->encoding()), pre, no_mask_reg, VEX_OPCODE_0F, rex_w);
-  }
-  int simd_prefix_and_encode_q(XMMRegister dst, Register src, VexSimdPrefix pre, bool no_mask_reg) {
-    return simd_prefix_and_encode_q(dst, xnoreg, src, pre, no_mask_reg);
-  }
-  int simd_prefix_and_encode_q(Register dst, XMMRegister src,
-                               VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F,
-                               bool no_mask_reg = false) {
-    bool rex_w = true;
-    return simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, pre, no_mask_reg, opc, rex_w);
-  }
+  int kreg_prefix_and_encode(KRegister dst, KRegister nds, Register src, VexSimdPrefix pre,
+                             VexOpcode opc, InstructionAttr *attributes);
 
   // Helper functions for groups of instructions
   void emit_arith_b(int op1, int op2, Register dst, int imm8);
@@ -821,27 +669,6 @@
   void emit_arith_imm32(int op1, int op2, Register dst, int32_t imm32);
   void emit_arith(int op1, int op2, Register dst, Register src);
 
-  void emit_simd_arith(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg = false, bool legacy_mode = false);
-  void emit_simd_arith_q(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg = false);
-  void emit_simd_arith(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg = false, bool legacy_mode = false);
-  void emit_simd_arith_q(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg = false);
-  void emit_simd_arith_nonds(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg = false);
-  void emit_simd_arith_nonds_q(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre, bool no_mask_reg = false);
-  void emit_simd_arith_nonds(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg = false, bool legacy_mode = false);
-  void emit_simd_arith_nonds_q(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre, bool no_mask_reg = false);
-  void emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds,
-                      Address src, VexSimdPrefix pre, int vector_len,
-                      bool no_mask_reg = false, bool legacy_mode = false);
-  void emit_vex_arith_q(int opcode, XMMRegister dst, XMMRegister nds,
-                        Address src, VexSimdPrefix pre, int vector_len,
-                        bool no_mask_reg = false);
-  void emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds,
-                      XMMRegister src, VexSimdPrefix pre, int vector_len,
-                      bool no_mask_reg = false, bool legacy_mode = false);
-  void emit_vex_arith_q(int opcode, XMMRegister dst, XMMRegister nds,
-                        XMMRegister src, VexSimdPrefix pre, int vector_len,
-                        bool no_mask_reg = false);
-
   bool emit_compressed_disp_byte(int &disp);
 
   void emit_operand(Register reg,
@@ -986,18 +813,16 @@
   // belong in macro assembler but there is no need for both varieties to exist
 
   void init_attributes(void) {
-    _evex_encoding = 0;
-    _input_size_in_bits = 0;
-    _avx_vector_len = AVX_NoVec;
-    _tuple_type = EVEX_ETUP;
-    _is_evex_instruction = false;
     _legacy_mode_bw = (VM_Version::supports_avx512bw() == false);
     _legacy_mode_dq = (VM_Version::supports_avx512dq() == false);
     _legacy_mode_vl = (VM_Version::supports_avx512vl() == false);
     _legacy_mode_vlbw = (VM_Version::supports_avx512vlbw() == false);
-    _instruction_uses_vl = false;
+    _attributes = NULL;
   }
 
+  void set_attributes(InstructionAttr *attributes) { _attributes = attributes; }
+  void clear_attributes(void) { _attributes = NULL; }
+
   void lea(Register dst, Address src);
 
   void mov(Register dst, Register src);
@@ -2106,12 +1931,12 @@
   void vextracti128h(Address dst, XMMRegister src);
 
   // Copy low 256bit into high 256bit of ZMM registers.
-  void vinserti64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src);
-  void vinsertf64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src);
-  void vextracti64x4h(XMMRegister dst, XMMRegister src);
-  void vextractf64x4h(XMMRegister dst, XMMRegister src);
-  void vextractf64x4h(Address dst, XMMRegister src);
-  void vinsertf64x4h(XMMRegister dst, Address src);
+  void vinserti64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src, int value);
+  void vinsertf64x4h(XMMRegister dst, XMMRegister nds, XMMRegister src, int value);
+  void vextracti64x4h(XMMRegister dst, XMMRegister src, int value);
+  void vextractf64x4h(XMMRegister dst, XMMRegister src, int value);
+  void vextractf64x4h(Address dst, XMMRegister src, int value);
+  void vinsertf64x4h(XMMRegister dst, Address src, int value);
 
   // Copy targeted 128bit segments of the ZMM registers
   void vextracti64x2h(XMMRegister dst, XMMRegister src, int value);
@@ -2173,4 +1998,95 @@
 
 };
 
+// The Intel x86/Amd64 Assembler attributes: All fields enclosed here are to guide encoding level decisions.
+// Specific set functions are for specialized use, else defaults or whatever was supplied to object construction
+// are applied.
+class InstructionAttr {
+public:
+  InstructionAttr(
+    int vector_len,
+    bool rex_vex_w,
+    bool legacy_mode,
+    bool no_reg_mask,
+    bool uses_vl)
+    :
+      _avx_vector_len(vector_len),
+      _rex_vex_w(rex_vex_w),
+      _legacy_mode(legacy_mode),
+      _no_reg_mask(no_reg_mask),
+      _uses_vl(uses_vl),
+      _tuple_type(Assembler::EVEX_ETUP),
+      _input_size_in_bits(Assembler::EVEX_NObit),
+      _is_evex_instruction(false),
+      _evex_encoding(0),
+      _is_clear_context(false),
+      _is_extended_context(false),
+      _current_assembler(NULL) {
+    if (UseAVX < 3) _legacy_mode = true;
+  }
+
+  ~InstructionAttr() {
+    if (_current_assembler != NULL) {
+      _current_assembler->clear_attributes();
+    }
+    _current_assembler = NULL;
+  }
+
+private:
+  int  _avx_vector_len;
+  bool _rex_vex_w;
+  bool _legacy_mode;
+  bool _no_reg_mask;
+  bool _uses_vl;
+  int  _tuple_type;
+  int  _input_size_in_bits;
+  bool _is_evex_instruction;
+  int  _evex_encoding;
+  bool _is_clear_context;
+  bool _is_extended_context;
+
+  Assembler *_current_assembler;
+
+public:
+  // query functions for field accessors
+  int  get_vector_len(void) const { return _avx_vector_len; }
+  bool is_rex_vex_w(void) const { return _rex_vex_w; }
+  bool is_legacy_mode(void) const { return _legacy_mode; }
+  bool is_no_reg_mask(void) const { return _no_reg_mask; }
+  bool uses_vl(void) const { return _uses_vl; }
+  int  get_tuple_type(void) const { return _tuple_type; }
+  int  get_input_size(void) const { return _input_size_in_bits; }
+  int  is_evex_instruction(void) const { return _is_evex_instruction; }
+  int  get_evex_encoding(void) const { return _evex_encoding; }
+  bool is_clear_context(void) const { return _is_clear_context; }
+  bool is_extended_context(void) const { return _is_extended_context; }
+
+  // Set the vector len manually
+  void set_vector_len(int vector_len) { _avx_vector_len = vector_len; }
+
+  // Set the instruction to be encoded in AVX mode
+  void set_is_legacy_mode(void) { _legacy_mode = true; }
+
+  // Set the current instuction to be encoded as an EVEX instuction
+  void set_is_evex_instruction(void) { _is_evex_instruction = true; }
+
+  // Internal encoding data used in compressed immediate offset programming
+  void set_evex_encoding(int value) { _evex_encoding = value; }
+
+  // Set the Evex.Z field to be used to clear all non directed XMM/YMM/ZMM components
+  void set_is_clear_context(void) { _is_clear_context = true; }
+
+  // Map back to current asembler so that we can manage object level assocation
+  void set_current_assembler(Assembler *current_assembler) { _current_assembler = current_assembler; }
+
+  // Address modifiers used for compressed displacement calculation
+  void set_address_attributes(int tuple_type, int input_size_in_bits) {
+    if (VM_Version::supports_evex()) {
+      _tuple_type = tuple_type;
+      _input_size_in_bits = input_size_in_bits;
+    }
+  }
+
+};
+
 #endif // CPU_X86_VM_ASSEMBLER_X86_HPP
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -3714,7 +3714,7 @@
     if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) {
       __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg());
     }
-    if (UseAVX > 1) {
+    if (UseAVX > 0) {
       __ vnegatess(dest->as_xmm_float_reg(), dest->as_xmm_float_reg(),
                    ExternalAddress((address)float_signflip_pool));
     } else {
@@ -3725,7 +3725,7 @@
     if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) {
       __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg());
     }
-    if (UseAVX > 1) {
+    if (UseAVX > 0) {
       __ vnegatesd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg(),
                    ExternalAddress((address)double_signflip_pool));
     } else {
--- a/src/cpu/x86/vm/c2_globals_x86.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/c2_globals_x86.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -84,6 +84,7 @@
 define_pd_global(bool, OptoScheduling,               false);
 define_pd_global(bool, OptoBundling,                 false);
 define_pd_global(bool, OptoRegScheduling,            true);
+define_pd_global(bool, SuperWordLoopUnrollAnalysis,  true);
 
 define_pd_global(intx, ReservedCodeCacheSize,        48*M);
 define_pd_global(intx, NonProfiledCodeHeapSize,      21*M);
--- a/src/cpu/x86/vm/c2_init_x86.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/c2_init_x86.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -58,6 +58,4 @@
       OptoReg::invalidate(i);
     }
   }
-
-  SuperWordLoopUnrollAnalysis = true;
 }
--- a/src/cpu/x86/vm/macroAssembler_x86.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/macroAssembler_x86.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -3651,12 +3651,71 @@
   LP64_ONLY(movq(dst, src)) NOT_LP64(movl(dst, src));
 }
 
+void MacroAssembler::movdqu(Address dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl() && (src->encoding() > 15)) {
+    Assembler::vextractf32x4h(dst, src, 0);
+  } else {
+    Assembler::movdqu(dst, src);
+  }
+}
+
+void MacroAssembler::movdqu(XMMRegister dst, Address src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl() && (dst->encoding() > 15)) {
+    Assembler::vinsertf32x4h(dst, src, 0);
+  } else {
+    Assembler::movdqu(dst, src);
+  }
+}
+
+void MacroAssembler::movdqu(XMMRegister dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl()) {
+    Assembler::evmovdqul(dst, src, Assembler::AVX_512bit);
+  } else {
+    Assembler::movdqu(dst, src);
+  }
+}
+
 void MacroAssembler::movdqu(XMMRegister dst, AddressLiteral src) {
   if (reachable(src)) {
-    Assembler::movdqu(dst, as_Address(src));
+    movdqu(dst, as_Address(src));
   } else {
     lea(rscratch1, src);
-    Assembler::movdqu(dst, Address(rscratch1, 0));
+    movdqu(dst, Address(rscratch1, 0));
+  }
+}
+
+void MacroAssembler::vmovdqu(Address dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl() && (src->encoding() > 15)) {
+    Assembler::vextractf64x4h(dst, src, 0);
+  } else {
+    Assembler::vmovdqu(dst, src);
+  }
+}
+
+void MacroAssembler::vmovdqu(XMMRegister dst, Address src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl() && (dst->encoding() > 15)) {
+    Assembler::vinsertf64x4h(dst, src, 0);
+  } else {
+    Assembler::vmovdqu(dst, src);
+  }
+}
+
+void MacroAssembler::vmovdqu(XMMRegister dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512vl()) {
+    Assembler::evmovdqul(dst, src, Assembler::AVX_512bit);
+  }
+  else {
+    Assembler::vmovdqu(dst, src);
+  }
+}
+
+void MacroAssembler::vmovdqu(XMMRegister dst, AddressLiteral src) {
+  if (reachable(src)) {
+    vmovdqu(dst, as_Address(src));
+  }
+  else {
+    lea(rscratch1, src);
+    vmovdqu(dst, Address(rscratch1, 0));
   }
 }
 
@@ -3726,6 +3785,10 @@
   call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
 }
 
+#ifdef _LP64
+#define XSTATE_BV 0x200
+#endif
+
 void MacroAssembler::pop_CPU_state() {
   pop_FPU_state();
   pop_IU_state();
@@ -3735,27 +3798,7 @@
 #ifndef _LP64
   frstor(Address(rsp, 0));
 #else
-  // AVX will continue to use the fxsave area.
-  // EVEX needs to utilize the xsave area, which is under different
-  // management.
-  if(VM_Version::supports_evex()) {
-    // EDX:EAX describe the XSAVE header and
-    // are obtained while fetching info for XCR0 via cpuid.
-    // These two registers make up 64-bits in the header for which bits
-    // 62:10 are currently reserved for future implementations and unused.  Bit 63
-    // is unused for our implementation as we do not utilize
-    // compressed XSAVE areas.  Bits 9..8 are currently ignored as we do not use
-    // the functionality for PKRU state and MSR tracing.
-    // Ergo we are primarily concerned with bits 7..0, which define
-    // which ISA extensions and features are enabled for a given machine and are
-    // defined in XemXcr0Eax and is used to map the XSAVE area
-    // for restoring registers as described via XCR0.
-    movl(rdx,VM_Version::get_xsave_header_upper_segment());
-    movl(rax,VM_Version::get_xsave_header_lower_segment());
-    xrstor(Address(rsp, 0));
-  } else {
-    fxrstor(Address(rsp, 0));
-  }
+  fxrstor(Address(rsp, 0));
 #endif
   addptr(rsp, FPUStateSizeInWords * wordSize);
 }
@@ -3773,49 +3816,13 @@
   push_FPU_state();
 }
 
-#ifdef _LP64
-#define XSTATE_BV 0x200
-#endif
-
 void MacroAssembler::push_FPU_state() {
   subptr(rsp, FPUStateSizeInWords * wordSize);
 #ifndef _LP64
   fnsave(Address(rsp, 0));
   fwait();
 #else
-  // AVX will continue to use the fxsave area.
-  // EVEX needs to utilize the xsave area, which is under different
-  // management.
-  if(VM_Version::supports_evex()) {
-    // Save a copy of EAX and EDX
-    push(rax);
-    push(rdx);
-    // EDX:EAX describe the XSAVE header and
-    // are obtained while fetching info for XCR0 via cpuid.
-    // These two registers make up 64-bits in the header for which bits
-    // 62:10 are currently reserved for future implementations and unused.  Bit 63
-    // is unused for our implementation as we do not utilize
-    // compressed XSAVE areas.  Bits 9..8 are currently ignored as we do not use
-    // the functionality for PKRU state and MSR tracing.
-    // Ergo we are primarily concerned with bits 7..0, which define
-    // which ISA extensions and features are enabled for a given machine and are
-    // defined in XemXcr0Eax and is used to program XSAVE area
-    // for saving the required registers as defined in XCR0.
-    int xcr0_edx = VM_Version::get_xsave_header_upper_segment();
-    int xcr0_eax = VM_Version::get_xsave_header_lower_segment();
-    movl(rdx,xcr0_edx);
-    movl(rax,xcr0_eax);
-    xsave(Address(rsp, wordSize*2));
-    // now Apply control bits and clear bytes 8..23 in the header
-    pop(rdx);
-    pop(rax);
-    movl(Address(rsp, XSTATE_BV), xcr0_eax);
-    movl(Address(rsp, XSTATE_BV+4), xcr0_edx);
-    andq(Address(rsp, XSTATE_BV+8), 0);
-    andq(Address(rsp, XSTATE_BV+16), 0);
-  } else {
-    fxsave(Address(rsp, 0));
-  }
+  fxsave(Address(rsp, 0));
 #endif // LP64
 }
 
@@ -4007,6 +4014,23 @@
   }
 }
 
+void MacroAssembler::xorpd(XMMRegister dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512dq() && (dst->encoding() == src->encoding())) {
+    Assembler::vpxor(dst, dst, src, Assembler::AVX_512bit);
+  }
+  else {
+    Assembler::xorpd(dst, src);
+  }
+}
+
+void MacroAssembler::xorps(XMMRegister dst, XMMRegister src) {
+  if (UseAVX > 2 && !VM_Version::supports_avx512dq() && (dst->encoding() == src->encoding())) {
+    Assembler::vpxor(dst, dst, src, Assembler::AVX_512bit);
+  } else {
+    Assembler::xorps(dst, src);
+  }
+}
+
 void MacroAssembler::xorps(XMMRegister dst, AddressLiteral src) {
   // Used in sign-bit flipping with aligned address.
   assert((UseAVX > 0) || (((intptr_t)src.target() & 15) == 0), "SSE mode requires address alignment 16 bytes");
@@ -4050,6 +4074,682 @@
   }
 }
 
+void MacroAssembler::vabsss(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if ((dst_enc < 16) && (nds_enc < 16)) {
+    vandps(dst, nds, negate_field, vector_len);
+  } else if ((src_enc < 16) && (dst_enc < 16)) {
+    movss(src, nds);
+    vandps(dst, src, negate_field, vector_len);
+  } else if (src_enc < 16) {
+    movss(src, nds);
+    vandps(src, src, negate_field, vector_len);
+    movss(dst, src);
+  } else if (dst_enc < 16) {
+    movdqu(src, xmm0);
+    movss(xmm0, nds);
+    vandps(dst, xmm0, negate_field, vector_len);
+    movdqu(xmm0, src);
+  } else if (nds_enc < 16) {
+    movdqu(src, xmm0);
+    vandps(xmm0, nds, negate_field, vector_len);
+    movss(dst, xmm0);
+    movdqu(xmm0, src);
+  } else {
+    movdqu(src, xmm0);
+    movss(xmm0, nds);
+    vandps(xmm0, xmm0, negate_field, vector_len);
+    movss(dst, xmm0);
+    movdqu(xmm0, src);
+  }
+}
+
+void MacroAssembler::vabssd(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if ((dst_enc < 16) && (nds_enc < 16)) {
+    vandpd(dst, nds, negate_field, vector_len);
+  } else if ((src_enc < 16) && (dst_enc < 16)) {
+    movsd(src, nds);
+    vandpd(dst, src, negate_field, vector_len);
+  } else if (src_enc < 16) {
+    movsd(src, nds);
+    vandpd(src, src, negate_field, vector_len);
+    movsd(dst, src);
+  } else if (dst_enc < 16) {
+    movdqu(src, xmm0);
+    movsd(xmm0, nds);
+    vandpd(dst, xmm0, negate_field, vector_len);
+    movdqu(xmm0, src);
+  } else if (nds_enc < 16) {
+    movdqu(src, xmm0);
+    vandpd(xmm0, nds, negate_field, vector_len);
+    movsd(dst, xmm0);
+    movdqu(xmm0, src);
+  } else {
+    movdqu(src, xmm0);
+    movsd(xmm0, nds);
+    vandpd(xmm0, xmm0, negate_field, vector_len);
+    movsd(dst, xmm0);
+    movdqu(xmm0, src);
+  }
+}
+
+void MacroAssembler::vpaddb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpaddb(dst, nds, src, vector_len);
+  } else if ((dst_enc < 16) && (src_enc < 16)) {
+    Assembler::vpaddb(dst, dst, src, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for src
+    evmovdqul(nds, src, Assembler::AVX_512bit);
+    Assembler::vpaddb(dst, dst, nds, vector_len);
+  } else if ((src_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpaddb(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds as scatch for xmm0 to hold src
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, src, Assembler::AVX_512bit);
+    Assembler::vpaddb(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, src, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpaddb(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpaddb(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpaddb(dst, nds, src, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpaddb(dst, dst, src, vector_len);
+  } else if (nds_enc < 16) {
+    // implies dst_enc in upper bank with src as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpaddb(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs in upper bank
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpaddb(xmm0, xmm0, src, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpaddw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpaddw(dst, nds, src, vector_len);
+  } else if ((dst_enc < 16) && (src_enc < 16)) {
+    Assembler::vpaddw(dst, dst, src, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for src
+    evmovdqul(nds, src, Assembler::AVX_512bit);
+    Assembler::vpaddw(dst, dst, nds, vector_len);
+  } else if ((src_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpaddw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds as scatch for xmm0 to hold src
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, src, Assembler::AVX_512bit);
+    Assembler::vpaddw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, src, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpaddw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpaddw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpaddw(dst, nds, src, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpaddw(dst, dst, src, vector_len);
+  } else if (nds_enc < 16) {
+    // implies dst_enc in upper bank with src as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpaddw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs in upper bank
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpaddw(xmm0, xmm0, src, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpsubb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsubb(dst, nds, src, vector_len);
+  } else if ((dst_enc < 16) && (src_enc < 16)) {
+    Assembler::vpsubb(dst, dst, src, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for src
+    evmovdqul(nds, src, Assembler::AVX_512bit);
+    Assembler::vpsubb(dst, dst, nds, vector_len);
+  } else if ((src_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsubb(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds as scatch for xmm0 to hold src
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, src, Assembler::AVX_512bit);
+    Assembler::vpsubb(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, src, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsubb(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpsubb(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsubb(dst, nds, src, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpsubb(dst, dst, src, vector_len);
+  } else if (nds_enc < 16) {
+    // implies dst_enc in upper bank with src as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsubb(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs in upper bank
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsubw(xmm0, xmm0, src, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpsubw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsubw(dst, nds, src, vector_len);
+  } else if ((dst_enc < 16) && (src_enc < 16)) {
+    Assembler::vpsubw(dst, dst, src, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for src
+    evmovdqul(nds, src, Assembler::AVX_512bit);
+    Assembler::vpsubw(dst, dst, nds, vector_len);
+  } else if ((src_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsubw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds as scatch for xmm0 to hold src
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, src, Assembler::AVX_512bit);
+    Assembler::vpsubw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, src, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsubw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpsubw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsubw(dst, nds, src, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpsubw(dst, dst, src, vector_len);
+  } else if (nds_enc < 16) {
+    // implies dst_enc in upper bank with src as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsubw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs in upper bank
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsubw(xmm0, xmm0, src, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+
+void MacroAssembler::vpmullw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int src_enc = src->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpmullw(dst, nds, src, vector_len);
+  } else if ((dst_enc < 16) && (src_enc < 16)) {
+    Assembler::vpmullw(dst, dst, src, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for src
+    evmovdqul(nds, src, Assembler::AVX_512bit);
+    Assembler::vpmullw(dst, dst, nds, vector_len);
+  } else if ((src_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch for dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpmullw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds as scatch for xmm0 to hold src
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, src, Assembler::AVX_512bit);
+    Assembler::vpmullw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, src, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpmullw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpmullw(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpmullw(dst, nds, src, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpmullw(dst, dst, src, vector_len);
+  } else if (nds_enc < 16) {
+    // implies dst_enc in upper bank with src as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpmullw(nds, nds, src, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs in upper bank
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpmullw(xmm0, xmm0, src, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpsraw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int shift_enc = shift->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsraw(dst, nds, shift, vector_len);
+  } else if ((dst_enc < 16) && (shift_enc < 16)) {
+    Assembler::vpsraw(dst, dst, shift, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds_enc as scratch with shift
+    evmovdqul(nds, shift, Assembler::AVX_512bit);
+    Assembler::vpsraw(dst, dst, nds, vector_len);
+  } else if ((shift_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch with dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsraw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds to save a copy of xmm0 and hold shift
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsraw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else if (nds_enc < 16) {
+    // use nds as dest as temps
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsraw(nds, nds, xmm0, vector_len);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, shift, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(xmm1, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpsraw(XMMRegister dst, XMMRegister nds, int shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsraw(dst, nds, shift, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpsraw(dst, dst, shift, vector_len);
+  } else if (nds_enc < 16) {
+    // use nds as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsraw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // use nds as scratch for xmm0
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsraw(xmm0, xmm0, shift, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpsrlw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int shift_enc = shift->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsrlw(dst, nds, shift, vector_len);
+  } else if ((dst_enc < 16) && (shift_enc < 16)) {
+    Assembler::vpsrlw(dst, dst, shift, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds_enc as scratch with shift
+    evmovdqul(nds, shift, Assembler::AVX_512bit);
+    Assembler::vpsrlw(dst, dst, nds, vector_len);
+  } else if ((shift_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch with dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsrlw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds to save a copy of xmm0 and hold shift
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsrlw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else if (nds_enc < 16) {
+    // use nds as dest as temps
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsrlw(nds, nds, xmm0, vector_len);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, shift, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(xmm1, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpsrlw(XMMRegister dst, XMMRegister nds, int shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsrlw(dst, nds, shift, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpsrlw(dst, dst, shift, vector_len);
+  } else if (nds_enc < 16) {
+    // use nds as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsrlw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // use nds as scratch for xmm0
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsrlw(xmm0, xmm0, shift, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+void MacroAssembler::vpsllw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  int shift_enc = shift->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsllw(dst, nds, shift, vector_len);
+  } else if ((dst_enc < 16) && (shift_enc < 16)) {
+    Assembler::vpsllw(dst, dst, shift, vector_len);
+  } else if ((dst_enc < 16) && (nds_enc < 16)) {
+    // use nds_enc as scratch with shift
+    evmovdqul(nds, shift, Assembler::AVX_512bit);
+    Assembler::vpsllw(dst, dst, nds, vector_len);
+  } else if ((shift_enc < 16) && (nds_enc < 16)) {
+    // use nds as scratch with dst
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else if (dst_enc < 16) {
+    // use nds to save a copy of xmm0 and hold shift
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsllw(dst, dst, xmm0, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  } else if (nds_enc < 16) {
+    // use nds as dest as temps
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, shift, Assembler::AVX_512bit);
+    Assembler::vpsllw(nds, nds, xmm0, vector_len);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // worse case scenario, all regs are in the upper bank
+    subptr(rsp, 64);
+    evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm1, shift, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(xmm0, xmm0, xmm1, vector_len);
+    evmovdqul(xmm1, dst, Assembler::AVX_512bit);
+    evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+    evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+    addptr(rsp, 64);
+  }
+}
+
+void MacroAssembler::vpsllw(XMMRegister dst, XMMRegister nds, int shift, int vector_len) {
+  int dst_enc = dst->encoding();
+  int nds_enc = nds->encoding();
+  if (VM_Version::supports_avxonly() || VM_Version::supports_avx512bw()) {
+    Assembler::vpsllw(dst, nds, shift, vector_len);
+  } else if (dst_enc < 16) {
+    Assembler::vpsllw(dst, dst, shift, vector_len);
+  } else if (nds_enc < 16) {
+    // use nds as scratch
+    evmovdqul(nds, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(nds, nds, shift, vector_len);
+    evmovdqul(dst, nds, Assembler::AVX_512bit);
+  } else {
+    // use nds as scratch for xmm0
+    evmovdqul(nds, xmm0, Assembler::AVX_512bit);
+    evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+    Assembler::vpsllw(xmm0, xmm0, shift, vector_len);
+    evmovdqul(xmm0, nds, Assembler::AVX_512bit);
+  }
+}
+
+// This instruction exists within macros, ergo we cannot control its input
+// when emitted through those patterns.
+void MacroAssembler::punpcklbw(XMMRegister dst, XMMRegister src) {
+  if (VM_Version::supports_avx512nobw()) {
+    int dst_enc = dst->encoding();
+    int src_enc = src->encoding();
+    if (dst_enc == src_enc) {
+      if (dst_enc < 16) {
+        Assembler::punpcklbw(dst, src);
+      } else {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        Assembler::punpcklbw(xmm0, xmm0);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      }
+    } else {
+      if ((src_enc < 16) && (dst_enc < 16)) {
+        Assembler::punpcklbw(dst, src);
+      } else if (src_enc < 16) {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        Assembler::punpcklbw(xmm0, src);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      } else if (dst_enc < 16) {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, src, Assembler::AVX_512bit);
+        Assembler::punpcklbw(dst, xmm0);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      } else {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        evmovdqul(xmm1, src, Assembler::AVX_512bit);
+        Assembler::punpcklbw(xmm0, xmm1);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      }
+    }
+  } else {
+    Assembler::punpcklbw(dst, src);
+  }
+}
+
+// This instruction exists within macros, ergo we cannot control its input
+// when emitted through those patterns.
+void MacroAssembler::pshuflw(XMMRegister dst, XMMRegister src, int mode) {
+  if (VM_Version::supports_avx512nobw()) {
+    int dst_enc = dst->encoding();
+    int src_enc = src->encoding();
+    if (dst_enc == src_enc) {
+      if (dst_enc < 16) {
+        Assembler::pshuflw(dst, src, mode);
+      } else {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        Assembler::pshuflw(xmm0, xmm0, mode);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      }
+    } else {
+      if ((src_enc < 16) && (dst_enc < 16)) {
+        Assembler::pshuflw(dst, src, mode);
+      } else if (src_enc < 16) {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        Assembler::pshuflw(xmm0, src, mode);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      } else if (dst_enc < 16) {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm0, src, Assembler::AVX_512bit);
+        Assembler::pshuflw(dst, xmm0, mode);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      } else {
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
+        subptr(rsp, 64);
+        evmovdqul(Address(rsp, 0), xmm1, Assembler::AVX_512bit);
+        evmovdqul(xmm0, dst, Assembler::AVX_512bit);
+        evmovdqul(xmm1, src, Assembler::AVX_512bit);
+        Assembler::pshuflw(xmm0, xmm1, mode);
+        evmovdqul(dst, xmm0, Assembler::AVX_512bit);
+        evmovdqul(xmm1, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+        evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
+        addptr(rsp, 64);
+      }
+    }
+  } else {
+    Assembler::pshuflw(dst, src, mode);
+  }
+}
+
 void MacroAssembler::vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len) {
   if (reachable(src)) {
     vandpd(dst, nds, as_Address(src), vector_len);
@@ -4133,31 +4833,16 @@
       subptr(rsp, 64);
       evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
       movflt(xmm0, nds);
-      if (reachable(src)) {
-        vxorps(xmm0, xmm0, as_Address(src), Assembler::AVX_128bit);
-      } else {
-        lea(rscratch1, src);
-        vxorps(xmm0, xmm0, Address(rscratch1, 0), Assembler::AVX_128bit);
-      }
+      vxorps(xmm0, xmm0, src, Assembler::AVX_128bit);
       movflt(dst, xmm0);
       evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
       addptr(rsp, 64);
     } else {
       movflt(dst, nds);
-      if (reachable(src)) {
-        vxorps(dst, dst, as_Address(src), Assembler::AVX_128bit);
-      } else {
-        lea(rscratch1, src);
-        vxorps(dst, dst, Address(rscratch1, 0), Assembler::AVX_128bit);
-      }
-    }
-  } else {
-    if (reachable(src)) {
-      vxorps(dst, nds, as_Address(src), Assembler::AVX_128bit);
-    } else {
-      lea(rscratch1, src);
-      vxorps(dst, nds, Address(rscratch1, 0), Assembler::AVX_128bit);
-    }
+      vxorps(dst, dst, src, Assembler::AVX_128bit);
+    }
+  } else {
+    vxorps(dst, nds, src, Assembler::AVX_128bit);
   }
 }
 
@@ -4172,31 +4857,16 @@
       subptr(rsp, 64);
       evmovdqul(Address(rsp, 0), xmm0, Assembler::AVX_512bit);
       movdbl(xmm0, nds);
-      if (reachable(src)) {
-        vxorps(xmm0, xmm0, as_Address(src), Assembler::AVX_128bit);
-      } else {
-        lea(rscratch1, src);
-        vxorps(xmm0, xmm0, Address(rscratch1, 0), Assembler::AVX_128bit);
-      }
+      vxorpd(xmm0, xmm0, src, Assembler::AVX_128bit);
       movdbl(dst, xmm0);
       evmovdqul(xmm0, Address(rsp, 0), Assembler::AVX_512bit);
       addptr(rsp, 64);
     } else {
       movdbl(dst, nds);
-      if (reachable(src)) {
-        vxorps(dst, dst, as_Address(src), Assembler::AVX_128bit);
-      } else {
-        lea(rscratch1, src);
-        vxorps(dst, dst, Address(rscratch1, 0), Assembler::AVX_128bit);
-      }
-    }
-  } else {
-    if (reachable(src)) {
-      vxorpd(dst, nds, as_Address(src), Assembler::AVX_128bit);
-    } else {
-      lea(rscratch1, src);
-      vxorpd(dst, nds, Address(rscratch1, 0), Assembler::AVX_128bit);
-    }
+      vxorpd(dst, dst, src, Assembler::AVX_128bit);
+    }
+  } else {
+    vxorpd(dst, nds, src, Assembler::AVX_128bit);
   }
 }
 
@@ -4688,7 +5358,6 @@
   pusha();
 
   // if we are coming from c1, xmm registers may be live
-  int off = 0;
   int num_xmm_regs = LP64_ONLY(16) NOT_LP64(8);
   if (UseAVX > 2) {
     num_xmm_regs = LP64_ONLY(32) NOT_LP64(8);
@@ -4697,7 +5366,7 @@
   if (UseSSE == 1)  {
     subptr(rsp, sizeof(jdouble)*8);
     for (int n = 0; n < 8; n++) {
-      movflt(Address(rsp, off++*sizeof(jdouble)), as_XMMRegister(n));
+      movflt(Address(rsp, n*sizeof(jdouble)), as_XMMRegister(n));
     }
   } else if (UseSSE >= 2)  {
     if (UseAVX > 2) {
@@ -4709,37 +5378,35 @@
 #ifdef COMPILER2
     if (MaxVectorSize > 16) {
       if(UseAVX > 2) {
-        // Save upper half of ZMM registes
+        // Save upper half of ZMM registers
         subptr(rsp, 32*num_xmm_regs);
         for (int n = 0; n < num_xmm_regs; n++) {
-          vextractf64x4h(Address(rsp, off++*32), as_XMMRegister(n));
+          vextractf64x4h(Address(rsp, n*32), as_XMMRegister(n), 1);
         }
-        off = 0;
       }
       assert(UseAVX > 0, "256 bit vectors are supported only with AVX");
-      // Save upper half of YMM registes
+      // Save upper half of YMM registers
       subptr(rsp, 16*num_xmm_regs);
       for (int n = 0; n < num_xmm_regs; n++) {
-        vextractf128h(Address(rsp, off++*16), as_XMMRegister(n));
+        vextractf128h(Address(rsp, n*16), as_XMMRegister(n));
       }
     }
 #endif
     // Save whole 128bit (16 bytes) XMM registers
     subptr(rsp, 16*num_xmm_regs);
-    off = 0;
 #ifdef _LP64
-    if (VM_Version::supports_avx512novl()) {
+    if (VM_Version::supports_evex()) {
       for (int n = 0; n < num_xmm_regs; n++) {
-        vextractf32x4h(Address(rsp, off++*16), as_XMMRegister(n), 0);
+        vextractf32x4h(Address(rsp, n*16), as_XMMRegister(n), 0);
       }
     } else {
       for (int n = 0; n < num_xmm_regs; n++) {
-        movdqu(Address(rsp, off++*16), as_XMMRegister(n));
+        movdqu(Address(rsp, n*16), as_XMMRegister(n));
       }
     }
 #else
     for (int n = 0; n < num_xmm_regs; n++) {
-      movdqu(Address(rsp, off++*16), as_XMMRegister(n));
+      movdqu(Address(rsp, n*16), as_XMMRegister(n));
     }
 #endif
   }
@@ -4808,44 +5475,40 @@
     addptr(rsp, sizeof(jdouble)*nb_args);
   }
 
-  off = 0;
   if (UseSSE == 1)  {
     for (int n = 0; n < 8; n++) {
-      movflt(as_XMMRegister(n), Address(rsp, off++*sizeof(jdouble)));
+      movflt(as_XMMRegister(n), Address(rsp, n*sizeof(jdouble)));
     }
     addptr(rsp, sizeof(jdouble)*8);
   } else if (UseSSE >= 2)  {
-    // Restore whole 128bit (16 bytes) XMM regiters
+    // Restore whole 128bit (16 bytes) XMM registers
 #ifdef _LP64
-    if (VM_Version::supports_avx512novl()) {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        vinsertf32x4h(as_XMMRegister(n), Address(rsp, off++*16), 0);
-      }
-    }
-    else {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        movdqu(as_XMMRegister(n), Address(rsp, off++*16));
-      }
-    }
+  if (VM_Version::supports_evex()) {
+    for (int n = 0; n < num_xmm_regs; n++) {
+      vinsertf32x4h(as_XMMRegister(n), Address(rsp, n*16), 0);
+    }
+  } else {
+    for (int n = 0; n < num_xmm_regs; n++) {
+      movdqu(as_XMMRegister(n), Address(rsp, n*16));
+    }
+  }
 #else
-    for (int n = 0; n < num_xmm_regs; n++) {
-      movdqu(as_XMMRegister(n), Address(rsp, off++ * 16));
-    }
+  for (int n = 0; n < num_xmm_regs; n++) {
+    movdqu(as_XMMRegister(n), Address(rsp, n*16));
+  }
 #endif
     addptr(rsp, 16*num_xmm_regs);
 
 #ifdef COMPILER2
     if (MaxVectorSize > 16) {
-      // Restore upper half of YMM registes.
-      off = 0;
+      // Restore upper half of YMM registers.
       for (int n = 0; n < num_xmm_regs; n++) {
-        vinsertf128h(as_XMMRegister(n), Address(rsp, off++*16));
+        vinsertf128h(as_XMMRegister(n), Address(rsp, n*16));
       }
       addptr(rsp, 16*num_xmm_regs);
       if(UseAVX > 2) {
-        off = 0;
         for (int n = 0; n < num_xmm_regs; n++) {
-          vinsertf64x4h(as_XMMRegister(n), Address(rsp, off++*32));
+          vinsertf64x4h(as_XMMRegister(n), Address(rsp, n*32), 1);
         }
         addptr(rsp, 32*num_xmm_regs);
       }
@@ -6831,7 +7494,7 @@
 
     bind(SCAN_TO_16_CHAR_LOOP);
     vmovdqu(vec3, Address(result, 0));
-    vpcmpeqw(vec3, vec3, vec1, true);
+    vpcmpeqw(vec3, vec3, vec1, 1);
     vptest(vec2, vec3);
     jcc(Assembler::carryClear, FOUND_CHAR);
     addptr(result, 32);
@@ -7671,7 +8334,7 @@
         BIND(L_check_fill_32_bytes);
         addl(count, 8 << shift);
         jccb(Assembler::less, L_check_fill_8_bytes);
-        evmovdqul(Address(to, 0), xtmp, Assembler::AVX_256bit);
+        vmovdqu(Address(to, 0), xtmp);
         addptr(to, 32);
         subl(count, 8 << shift);
 
--- a/src/cpu/x86/vm/macroAssembler_x86.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/macroAssembler_x86.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -962,10 +962,15 @@
   void divss(XMMRegister dst, AddressLiteral src);
 
   // Move Unaligned Double Quadword
-  void movdqu(Address     dst, XMMRegister src)   { Assembler::movdqu(dst, src); }
-  void movdqu(XMMRegister dst, Address src)       { Assembler::movdqu(dst, src); }
-  void movdqu(XMMRegister dst, XMMRegister src)   { Assembler::movdqu(dst, src); }
+  void movdqu(Address     dst, XMMRegister src);
+  void movdqu(XMMRegister dst, Address src);
+  void movdqu(XMMRegister dst, XMMRegister src);
   void movdqu(XMMRegister dst, AddressLiteral src);
+  // AVX Unaligned forms
+  void vmovdqu(Address     dst, XMMRegister src);
+  void vmovdqu(XMMRegister dst, Address src);
+  void vmovdqu(XMMRegister dst, XMMRegister src);
+  void vmovdqu(XMMRegister dst, AddressLiteral src);
 
   // Move Aligned Double Quadword
   void movdqa(XMMRegister dst, Address src)       { Assembler::movdqa(dst, src); }
@@ -1024,12 +1029,12 @@
   void ucomisd(XMMRegister dst, AddressLiteral src);
 
   // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
-  void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); }
+  void xorpd(XMMRegister dst, XMMRegister src);
   void xorpd(XMMRegister dst, Address src)     { Assembler::xorpd(dst, src); }
   void xorpd(XMMRegister dst, AddressLiteral src);
 
   // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
-  void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); }
+  void xorps(XMMRegister dst, XMMRegister src);
   void xorps(XMMRegister dst, Address src)     { Assembler::xorps(dst, src); }
   void xorps(XMMRegister dst, AddressLiteral src);
 
@@ -1047,6 +1052,39 @@
   void vaddss(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vaddss(dst, nds, src); }
   void vaddss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
 
+  void vabsss(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len);
+  void vabssd(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len);
+
+  void vpaddb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
+  void vpaddb(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
+
+  void vpaddw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
+  void vpaddw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
+
+  void vpsubb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
+  void vpsubb(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
+
+  void vpsubw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
+  void vpsubw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
+
+  void vpmullw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
+  void vpmullw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
+
+  void vpsraw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
+  void vpsraw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
+
+  void vpsrlw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
+  void vpsrlw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
+
+  void vpsllw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
+  void vpsllw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
+
+  void punpcklbw(XMMRegister dst, XMMRegister src);
+  void punpcklbw(XMMRegister dst, Address src) { Assembler::punpcklbw(dst, src); }
+
+  void pshuflw(XMMRegister dst, XMMRegister src, int mode);
+  void pshuflw(XMMRegister dst, Address src, int mode) { Assembler::pshuflw(dst, src, mode); }
+
   void vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vandpd(dst, nds, src, vector_len); }
   void vandpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len)     { Assembler::vandpd(dst, nds, src, vector_len); }
   void vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len);
--- a/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -192,31 +192,22 @@
     }
   } else if(UseSSE >= 2) {
     // Save whole 128bit (16 bytes) XMM regiters
-    if (VM_Version::supports_avx512novl()) {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        __ vextractf32x4h(Address(rsp, off*wordSize), as_XMMRegister(n), 0);
-        off += delta;
-      }
-    } else {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        __ movdqu(Address(rsp, off*wordSize), as_XMMRegister(n));
-        off += delta;
-      }
+    for (int n = 0; n < num_xmm_regs; n++) {
+      __ movdqu(Address(rsp, off*wordSize), as_XMMRegister(n));
+      off += delta;
     }
   }
 
   if (vect_words > 0) {
     assert(vect_words*wordSize == 128, "");
     __ subptr(rsp, 128); // Save upper half of YMM registes
-    off = 0;
     for (int n = 0; n < num_xmm_regs; n++) {
-      __ vextractf128h(Address(rsp, off++*16), as_XMMRegister(n));
+      __ vextractf128h(Address(rsp, n*16), as_XMMRegister(n));
     }
     if (UseAVX > 2) {
       __ subptr(rsp, 256); // Save upper half of ZMM registes
-      off = 0;
       for (int n = 0; n < num_xmm_regs; n++) {
-        __ vextractf64x4h(Address(rsp, off++*32), as_XMMRegister(n));
+        __ vextractf64x4h(Address(rsp, n*32), as_XMMRegister(n), 1);
       }
     }
   }
@@ -285,31 +276,23 @@
       off += delta;
     }
   } else if (UseSSE >= 2) {
-    if (VM_Version::supports_avx512novl()) {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        __ vinsertf32x4h(as_XMMRegister(n), Address(rsp, off*wordSize+additional_frame_bytes), 0);
-        off += delta;
-      }
-    } else {
-      for (int n = 0; n < num_xmm_regs; n++) {
-        __ movdqu(as_XMMRegister(n), Address(rsp, off*wordSize+additional_frame_bytes));
-        off += delta;
-      }
+    for (int n = 0; n < num_xmm_regs; n++) {
+      __ movdqu(as_XMMRegister(n), Address(rsp, off*wordSize+additional_frame_bytes));
+      off += delta;
     }
   }
   if (restore_vectors) {
+    assert(additional_frame_bytes == 128, "");
     if (UseAVX > 2) {
-      off = 0;
+      // Restore upper half of ZMM registers.
       for (int n = 0; n < num_xmm_regs; n++) {
-        __ vinsertf64x4h(as_XMMRegister(n), Address(rsp, off++*32));
+        __ vinsertf64x4h(as_XMMRegister(n), Address(rsp, n*32), 1);
       }
       __ addptr(rsp, additional_frame_bytes*2); // Save upper half of ZMM registes
     }
     // Restore upper half of YMM registes.
-    assert(additional_frame_bytes == 128, "");
-    off = 0;
     for (int n = 0; n < num_xmm_regs; n++) {
-      __ vinsertf128h(as_XMMRegister(n), Address(rsp, off++*16));
+      __ vinsertf128h(as_XMMRegister(n), Address(rsp, n*16));
     }
     __ addptr(rsp, additional_frame_bytes); // Save upper half of YMM registes
   }
--- a/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -72,45 +72,28 @@
 class RegisterSaver {
   // Capture info about frame layout.  Layout offsets are in jint
   // units because compiler frame slots are jints.
-#define HALF_ZMM_BANK_WORDS 128
+#define XSAVE_AREA_BEGIN 160
+#define XSAVE_AREA_YMM_BEGIN 576
+#define XSAVE_AREA_ZMM_BEGIN 1152
+#define XSAVE_AREA_UPPERBANK 1664
 #define DEF_XMM_OFFS(regnum) xmm ## regnum ## _off = xmm_off + (regnum)*16/BytesPerInt, xmm ## regnum ## H_off
+#define DEF_YMM_OFFS(regnum) ymm ## regnum ## _off = ymm_off + (regnum)*16/BytesPerInt, ymm ## regnum ## H_off
 #define DEF_ZMM_OFFS(regnum) zmm ## regnum ## _off = zmm_off + (regnum-16)*64/BytesPerInt, zmm ## regnum ## H_off
   enum layout {
     fpu_state_off = frame::arg_reg_save_area_bytes/BytesPerInt, // fxsave save area
-    xmm_off       = fpu_state_off + 160/BytesPerInt,            // offset in fxsave save area
+    xmm_off       = fpu_state_off + XSAVE_AREA_BEGIN/BytesPerInt,            // offset in fxsave save area
     DEF_XMM_OFFS(0),
     DEF_XMM_OFFS(1),
-    DEF_XMM_OFFS(2),
-    DEF_XMM_OFFS(3),
-    DEF_XMM_OFFS(4),
-    DEF_XMM_OFFS(5),
-    DEF_XMM_OFFS(6),
-    DEF_XMM_OFFS(7),
-    DEF_XMM_OFFS(8),
-    DEF_XMM_OFFS(9),
-    DEF_XMM_OFFS(10),
-    DEF_XMM_OFFS(11),
-    DEF_XMM_OFFS(12),
-    DEF_XMM_OFFS(13),
-    DEF_XMM_OFFS(14),
-    DEF_XMM_OFFS(15),
-    zmm_off = fpu_state_off + ((FPUStateSizeInWords - (HALF_ZMM_BANK_WORDS + 1))*wordSize / BytesPerInt),
+    // 2..15 are implied in range usage
+    ymm_off = xmm_off + (XSAVE_AREA_YMM_BEGIN - XSAVE_AREA_BEGIN)/BytesPerInt,
+    DEF_YMM_OFFS(0),
+    DEF_YMM_OFFS(1),
+    // 2..15 are implied in range usage
+    zmm_high = xmm_off + (XSAVE_AREA_ZMM_BEGIN - XSAVE_AREA_BEGIN)/BytesPerInt,
+    zmm_off = xmm_off + (XSAVE_AREA_UPPERBANK - XSAVE_AREA_BEGIN)/BytesPerInt,
     DEF_ZMM_OFFS(16),
     DEF_ZMM_OFFS(17),
-    DEF_ZMM_OFFS(18),
-    DEF_ZMM_OFFS(19),
-    DEF_ZMM_OFFS(20),
-    DEF_ZMM_OFFS(21),
-    DEF_ZMM_OFFS(22),
-    DEF_ZMM_OFFS(23),
-    DEF_ZMM_OFFS(24),
-    DEF_ZMM_OFFS(25),
-    DEF_ZMM_OFFS(26),
-    DEF_ZMM_OFFS(27),
-    DEF_ZMM_OFFS(28),
-    DEF_ZMM_OFFS(29),
-    DEF_ZMM_OFFS(30),
-    DEF_ZMM_OFFS(31),
+    // 18..31 are implied in range usage
     fpu_state_end = fpu_state_off + ((FPUStateSizeInWords-1)*wordSize / BytesPerInt),
     fpu_stateH_end,
     r15_off, r15H_off,
@@ -160,8 +143,6 @@
 };
 
 OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, int additional_frame_words, int* total_frame_words, bool save_vectors) {
-  int vect_words = 0;
-  int ymmhi_offset = -1;
   int off = 0;
   int num_xmm_regs = XMMRegisterImpl::number_of_registers;
   if (UseAVX < 3) {
@@ -171,24 +152,15 @@
   if (save_vectors) {
     assert(UseAVX > 0, "512bit vectors are supported only with EVEX");
     assert(MaxVectorSize == 64, "only 512bit vectors are supported now");
-    // Save upper half of YMM registers
-    vect_words = 16 * num_xmm_regs / wordSize;
-    if (UseAVX < 3) {
-      ymmhi_offset = additional_frame_words;
-      additional_frame_words += vect_words;
-    }
   }
 #else
   assert(!save_vectors, "vectors are generated only by C2 and JVMCI");
 #endif
 
-  // Always make the frame size 16-byte aligned
-  int frame_size_in_bytes = round_to(additional_frame_words*wordSize +
-                                     reg_save_size*BytesPerInt, num_xmm_regs);
+  // Always make the frame size 16-byte aligned, both vector and non vector stacks are always allocated
+  int frame_size_in_bytes = round_to(reg_save_size*BytesPerInt, num_xmm_regs);
   // OopMap frame size is in compiler stack slots (jint's) not bytes or words
   int frame_size_in_slots = frame_size_in_bytes / BytesPerInt;
-  // The caller will allocate additional_frame_words
-  int additional_frame_slots = additional_frame_words*wordSize / BytesPerInt;
   // CodeBlob frame size is in words.
   int frame_size_in_words = frame_size_in_bytes / wordSize;
   *total_frame_words = frame_size_in_words;
@@ -203,12 +175,34 @@
   __ push_CPU_state(); // Push a multiple of 16 bytes
 
   // push cpu state handles this on EVEX enabled targets
-  if ((vect_words > 0) && (UseAVX < 3)) {
-    assert(vect_words*wordSize >= 256, "");
-    // Save upper half of YMM registes(0..num_xmm_regs)
-    __ subptr(rsp, num_xmm_regs*16);
-    for (int n = 0; n < num_xmm_regs; n++) {
-      __ vextractf128h(Address(rsp, off++*16), as_XMMRegister(n));
+  if (save_vectors) {
+    // Save upper half of YMM registes(0..15)
+    int base_addr = XSAVE_AREA_YMM_BEGIN;
+    for (int n = 0; n < 16; n++) {
+      __ vextractf128h(Address(rsp, base_addr+n*16), as_XMMRegister(n));
+    }
+    if (VM_Version::supports_evex()) {
+      // Save upper half of ZMM registes(0..15)
+      base_addr = XSAVE_AREA_ZMM_BEGIN;
+      for (int n = 0; n < 16; n++) {
+        __ vextractf64x4h(Address(rsp, base_addr+n*32), as_XMMRegister(n), 1);
+      }
+      // Save full ZMM registes(16..num_xmm_regs)
+      base_addr = XSAVE_AREA_UPPERBANK;
+      int off = 0;
+      int vector_len = Assembler::AVX_512bit;
+      for (int n = 16; n < num_xmm_regs; n++) {
+        __ evmovdqul(Address(rsp, base_addr+(off++*64)), as_XMMRegister(n), vector_len);
+      }
+    }
+  } else {
+    if (VM_Version::supports_evex()) {
+      // Save upper bank of ZMM registers(16..31) for double/float usage
+      int base_addr = XSAVE_AREA_UPPERBANK;
+      int off = 0;
+      for (int n = 16; n < num_xmm_regs; n++) {
+        __ movsd(Address(rsp, base_addr+(off++*64)), as_XMMRegister(n));
+      }
     }
   }
   if (frame::arg_reg_save_area_bytes != 0) {
@@ -224,8 +218,7 @@
   OopMapSet *oop_maps = new OopMapSet();
   OopMap* map = new OopMap(frame_size_in_slots, 0);
 
-#define STACK_OFFSET(x) VMRegImpl::stack2reg((x) + additional_frame_slots)
-#define YMMHI_STACK_OFFSET(x) VMRegImpl::stack2reg((x / VMRegImpl::stack_slot_size) + ymmhi_offset)
+#define STACK_OFFSET(x) VMRegImpl::stack2reg((x))
 
   map->set_callee_saved(STACK_OFFSET( rax_off ), rax->as_VMReg());
   map->set_callee_saved(STACK_OFFSET( rcx_off ), rcx->as_VMReg());
@@ -257,31 +250,21 @@
     off = zmm16_off;
     delta = zmm17_off - off;
     for (int n = 16; n < num_xmm_regs; n++) {
-      XMMRegister xmm_name = as_XMMRegister(n);
-      map->set_callee_saved(STACK_OFFSET(off), xmm_name->as_VMReg());
+      XMMRegister zmm_name = as_XMMRegister(n);
+      map->set_callee_saved(STACK_OFFSET(off), zmm_name->as_VMReg());
       off += delta;
     }
   }
 
 #if defined(COMPILER2) || INCLUDE_JVMCI
   if (save_vectors) {
-    assert(ymmhi_offset != -1, "save area must exist");
-    map->set_callee_saved(YMMHI_STACK_OFFSET(  0), xmm0->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 16), xmm1->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 32), xmm2->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 48), xmm3->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 64), xmm4->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 80), xmm5->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET( 96), xmm6->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(112), xmm7->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(128), xmm8->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(144), xmm9->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(160), xmm10->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(176), xmm11->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(192), xmm12->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(208), xmm13->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(224), xmm14->as_VMReg()->next(4));
-    map->set_callee_saved(YMMHI_STACK_OFFSET(240), xmm15->as_VMReg()->next(4));
+    off = ymm0_off;
+    int delta = ymm1_off - off;
+    for (int n = 0; n < 16; n++) {
+      XMMRegister ymm_name = as_XMMRegister(n);
+      map->set_callee_saved(STACK_OFFSET(off), ymm_name->as_VMReg()->next(4));
+      off += delta;
+    }
   }
 #endif // COMPILER2 || INCLUDE_JVMCI
 
@@ -316,8 +299,8 @@
       off = zmm16H_off;
       delta = zmm17H_off - off;
       for (int n = 16; n < num_xmm_regs; n++) {
-        XMMRegister xmm_name = as_XMMRegister(n);
-        map->set_callee_saved(STACK_OFFSET(off), xmm_name->as_VMReg()->next());
+        XMMRegister zmm_name = as_XMMRegister(n);
+        map->set_callee_saved(STACK_OFFSET(off), zmm_name->as_VMReg()->next());
         off += delta;
       }
     }
@@ -335,21 +318,48 @@
     // Pop arg register save area
     __ addptr(rsp, frame::arg_reg_save_area_bytes);
   }
+
 #if defined(COMPILER2) || INCLUDE_JVMCI
-  // On EVEX enabled targets everything is handled in pop fpu state
-  if ((restore_vectors) && (UseAVX < 3)) {
-    assert(UseAVX > 0, "256/512-bit vectors are supported only with AVX");
-    assert(MaxVectorSize == 64, "up to 512bit vectors are supported now");
-    int off = 0;
-    // Restore upper half of YMM registes (0..num_xmm_regs)
-    for (int n = 0; n < num_xmm_regs; n++) {
-      __ vinsertf128h(as_XMMRegister(n), Address(rsp,  off++*16));
-    }
-    __ addptr(rsp, num_xmm_regs*16);
+  if (restore_vectors) {
+    assert(UseAVX > 0, "512bit vectors are supported only with EVEX");
+    assert(MaxVectorSize == 64, "only 512bit vectors are supported now");
   }
 #else
-  assert(!restore_vectors, "vectors are generated only by C2 and JVMCI");
+  assert(!save_vectors, "vectors are generated only by C2");
 #endif
+
+  // On EVEX enabled targets everything is handled in pop fpu state
+  if (restore_vectors) {
+    // Restore upper half of YMM registes (0..15)
+    int base_addr = XSAVE_AREA_YMM_BEGIN;
+    for (int n = 0; n < 16; n++) {
+      __ vinsertf128h(as_XMMRegister(n), Address(rsp,  base_addr+n*16));
+    }
+    if (VM_Version::supports_evex()) {
+      // Restore upper half of ZMM registes (0..15)
+      base_addr = XSAVE_AREA_ZMM_BEGIN;
+      for (int n = 0; n < 16; n++) {
+        __ vinsertf64x4h(as_XMMRegister(n), Address(rsp, base_addr+n*32), 1);
+      }
+      // Restore full ZMM registes(16..num_xmm_regs)
+      base_addr = XSAVE_AREA_UPPERBANK;
+      int vector_len = Assembler::AVX_512bit;
+      int off = 0;
+      for (int n = 16; n < num_xmm_regs; n++) {
+        __ evmovdqul(as_XMMRegister(n), Address(rsp, base_addr+(off++*64)), vector_len);
+      }
+    }
+  } else {
+    if (VM_Version::supports_evex()) {
+      // Restore upper bank of ZMM registes(16..31) for double/float usage
+      int base_addr = XSAVE_AREA_UPPERBANK;
+      int off = 0;
+      for (int n = 16; n < num_xmm_regs; n++) {
+        __ movsd(as_XMMRegister(n), Address(rsp, base_addr+(off++*64)));
+      }
+    }
+  }
+
   // Recover CPU state
   __ pop_CPU_state();
   // Get the rbp described implicitly by the calling convention (no oopMap)
--- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -273,7 +273,7 @@
     if (UseAVX > 2) {
       last_reg = 31;
     }
-    if (VM_Version::supports_avx512novl()) {
+    if (VM_Version::supports_evex()) {
       for (int i = xmm_save_first; i <= last_reg; i++) {
         __ vextractf32x4h(xmm_save(i), as_XMMRegister(i), 0);
       }
@@ -391,7 +391,7 @@
     // restore regs belonging to calling function
 #ifdef _WIN64
     // emit the restores for xmm regs
-    if (VM_Version::supports_avx512novl()) {
+    if (VM_Version::supports_evex()) {
       for (int i = xmm_save_first; i <= last_reg; i++) {
         __ vinsertf32x4h(as_XMMRegister(i), xmm_save(i), 0);
       }
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Mon Nov 09 11:26:41 2015 -0800
@@ -891,7 +891,7 @@
       UseNewLongLShift = true;
     }
     if( FLAG_IS_DEFAULT(UseXmmLoadAndClearUpper) ) {
-      if( supports_sse4a() ) {
+      if (supports_sse4a()) {
         UseXmmLoadAndClearUpper = true; // use movsd only on '10h' Opteron
       } else {
         UseXmmLoadAndClearUpper = false;
--- a/src/cpu/x86/vm/vm_version_x86.hpp	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/vm_version_x86.hpp	Mon Nov 09 11:26:41 2015 -0800
@@ -552,6 +552,19 @@
           break;
         }
       }
+      // zmm_save will be set on a EVEX enabled machine even if we choose AVX code gen
+      if (retVal == false) {
+        // Verify that OS save/restore all bits of EVEX registers
+        // during signal processing.
+        int nreg = 2 LP64_ONLY(+2);
+        retVal = true;
+        for (int i = 0; i < 16 * nreg; i++) { // 64 bytes per zmm register
+          if (_cpuid_info.zmm_save[i] != ymm_test_value()) {
+            retVal = false;
+            break;
+          }
+        }
+      }
     }
     return retVal;
   }
@@ -706,6 +719,9 @@
   static bool supports_avx512vl() { return (_cpuFeatures & CPU_AVX512VL) != 0; }
   static bool supports_avx512vlbw() { return (supports_avx512bw() && supports_avx512vl()); }
   static bool supports_avx512novl() { return (supports_evex() && !supports_avx512vl()); }
+  static bool supports_avx512nobw() { return (supports_evex() && !supports_avx512bw()); }
+  static bool supports_avx256only() { return (supports_avx2() && !supports_evex()); }
+  static bool supports_avxonly()    { return ((supports_avx2() || supports_avx()) && !supports_evex()); }
   // Intel features
   static bool is_intel_family_core() { return is_intel() &&
                                        extended_cpu_family() == CPU_FAMILY_INTEL_CORE; }
--- a/src/cpu/x86/vm/x86.ad	Mon Nov 09 13:27:18 2015 +0000
+++ b/src/cpu/x86/vm/x86.ad	Mon Nov 09 11:26:41 2015 -0800
@@ -1716,6 +1716,36 @@
   return ret_value;  // Per default match rules are supported.
 }
 
+const bool Matcher::match_rule_supported_vector(int opcode, int vlen) {
+  // identify extra cases that we might want to provide match rules for
+  // e.g. Op_ vector nodes and other intrinsics while guarding with vlen
+  bool ret_value = match_rule_supported(opcode);
+  if (ret_value) {
+    switch (opcode) {
+      case Op_AddVB:
+      case Op_SubVB:
+        if ((vlen == 64) && (VM_Version::supports_avx512bw() == false))
+          ret_value = false;
+        break;
+      case Op_URShiftVS:
+      case Op_RShiftVS:
+      case Op_LShiftVS:
+      case Op_MulVS:
+      case Op_AddVS:
+      case Op_SubVS:
+        if ((vlen == 32) && (VM_Version::supports_avx512bw() == false))
+          ret_value = false;
+        break;
+      case Op_CMoveVD:
+        if (vlen != 4)
+          ret_value  = false;
+        break;
+    }
+  }
+
+  return ret_value;  // Per default match rules are supported.
+}
+
 const int Matcher::float_pressure(int default_pressure_threshold) {
   int float_pressure_threshold = default_pressure_threshold;
 #ifdef _LP64
@@ -1759,11 +1789,9 @@
     break;
   case T_BYTE:
     if (size < 4) return 0;
-    if ((size > 32) && !VM_Version::supports_avx512bw()) return 0;
     break;
   case T_SHORT:
     if (size < 4) return 0;
-    if ((size > 16) && !VM_Version::supports_avx512bw()) return 0;
     break;
   default:
     ShouldNotReachHere();
@@ -1967,27 +1995,34 @@
   bool is_single_byte = false;
   int vec_len = 0;
   if ((UseAVX > 2) && (stack_offset != 0)) {
+    int tuple_type = Assembler::EVEX_FVM;
+    int input_size = Assembler::EVEX_32bit;
     switch (ireg) {
-	case Op_VecS:
+    case Op_VecS:
+      tuple_type = Assembler::EVEX_T1S;
+      break;
     case Op_VecD:
+      tuple_type = Assembler::EVEX_T1S;
+      input_size = Assembler::EVEX_64bit;
+      break;
     case Op_VecX:
-	  break;
-	case Op_VecY:
-	  vec_len = 1;
-	  break;
+      break;
+    case Op_VecY:
+      vec_len = 1;
+      break;
     case Op_VecZ:
-	  vec_len = 2;
-	  break;
+      vec_len = 2;
+      break;
     }
-    is_single_byte = Assembler::query_compressed_disp_byte(stack_offset, true, vec_len, Assembler::EVEX_FVM, Assembler::EVEX_32bit, 0);
+    is_single_byte = Assembler::query_compressed_disp_byte(stack_offset, true, vec_len, tuple_type, input_size, 0);
   }
   int offset_size = 0;
   int size = 5;
   if (UseAVX > 2 ) {
-    if ((VM_Version::supports_avx512vl() == false) && (vec_len == 2)) { 
+    if (VM_Version::supports_avx512novl() && (vec_len == 2)) {
       offset_size = (stack_offset == 0) ? 0 : ((is_single_byte) ? 1 : 4);
       size += 2; // Need an additional two bytes for EVEX encoding
-    } else if ((VM_Version::supports_avx512vl() == false) && (vec_len < 2)) { 
+    } else if (VM_Version::supports_avx512novl() && (vec_len < 2)) {
       offset_size = (stack_offset == 0) ? 0 : ((stack_offset <= 127) ? 1 : 4);
     } else {
       offset_size = (stack_offset == 0) ? 0 : ((is_single_byte) ? 1 : 4);
@@ -2711,7 +2746,7 @@
 %}
 
 instruct absF_reg_reg(regF dst, regF src) %{
-  predicate(UseAVX > 0);
+  predicate(VM_Version::supports_avxonly());
   match(Set dst (AbsF src));
   ins_cost(150);
   format %{ "vandps  $dst, $src, [0x7fffffff]\t# abs float by sign masking" %}
@@ -2723,6 +2758,48 @@
   ins_pipe(pipe_slow);
 %}
 
+#ifdef _LP64
+instruct absF_reg_reg_evex(regF dst, regF src) %{
+  predicate(UseAVX > 2 && VM_Version::supports_avx512vl());
+  match(Set dst (AbsF src));
+  ins_cost(150);
+  format %{ "vandps  $dst, $src, [0x7fffffff]\t# abs float by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vandps($dst$$XMMRegister, $src$$XMMRegister,
+              ExternalAddress(float_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+
+instruct absF_reg_reg_evex_special(regF dst, regF src1, regF src2) %{
+  predicate(VM_Version::supports_avx512novl());
+  match(Set dst (AbsF src1));
+  effect(TEMP src2);
+  ins_cost(150);
+  format %{ "vabsss  $dst, $src1, $src2, [0x7fffffff]\t# abs float by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vabsss($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister,
+              ExternalAddress(float_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+#else // _LP64
+instruct absF_reg_reg_evex(regF dst, regF src) %{
+  predicate(UseAVX > 2);
+  match(Set dst (AbsF src));
+  ins_cost(150);
+  format %{ "vandps  $dst, $src, [0x7fffffff]\t# abs float by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vandps($dst$$XMMRegister, $src$$XMMRegister,
+              ExternalAddress(float_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+#endif
+
 instruct absD_reg(regD dst) %{
   predicate((UseSSE>=2) && (UseAVX == 0));
   match(Set dst (AbsD dst));
@@ -2736,7 +2813,7 @@
 %}
 
 instruct absD_reg_reg(regD dst, regD src) %{
-  predicate(UseAVX > 0);
+  predicate(VM_Version::supports_avxonly());
   match(Set dst (AbsD src));
   ins_cost(150);
   format %{ "vandpd  $dst, $src, [0x7fffffffffffffff]\t"
@@ -2749,6 +2826,50 @@
   ins_pipe(pipe_slow);
 %}
 
+#ifdef _LP64
+instruct absD_reg_reg_evex(regD dst, regD src) %{
+  predicate(UseAVX > 2 && VM_Version::supports_avx512vl());
+  match(Set dst (AbsD src));
+  ins_cost(150);
+  format %{ "vandpd  $dst, $src, [0x7fffffffffffffff]\t"
+            "# abs double by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vandpd($dst$$XMMRegister, $src$$XMMRegister,
+              ExternalAddress(double_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+
+instruct absD_reg_reg_evex_special(regD dst, regD src1, regD src2) %{
+  predicate(VM_Version::supports_avx512novl());
+  match(Set dst (AbsD src1));
+  effect(TEMP src2);
+  ins_cost(150);
+  format %{ "vabssd  $dst, $src1, $src2, [0x7fffffffffffffff]\t# abs float by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vabssd($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister,
+              ExternalAddress(double_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+#else // _LP64
+instruct absD_reg_reg_evex(regD dst, regD src) %{
+  predicate(UseAVX > 2);
+  match(Set dst (AbsD src));
+  ins_cost(150);
+  format %{ "vandpd  $dst, $src, [0x7fffffffffffffff]\t"
+            "# abs double by sign masking" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vandpd($dst$$XMMRegister, $src$$XMMRegister,
+              ExternalAddress(double_signmask()), vector_len);
+  %}
+  ins_pipe(pipe_slow);
+%}
+#endif
+
 instruct negF_reg(regF dst) %{
   predicate((UseSSE>=1) && (UseAVX == 0));
   match(Set dst (NegF dst));
@@ -4554,7 +4675,7 @@
 %}
 
 instruct rvadd2I_reduction_reg(rRegI dst, rRegI src1, vecD src2, regF tmp, regF tmp2) %{
-  predicate(UseAVX > 0 && UseAVX < 3);
+  predicate(VM_Version::supports_avxonly());
   match(Set dst (AddReductionVI src1 src2));
   effect(TEMP tmp, TEMP tmp2);
   format %{ "vphaddd  $tmp,$src2,$src2\n\t"
@@ -4594,37 +4715,37 @@
 instruct rsadd4I_reduction_reg(rRegI dst, rRegI src1, vecX src2, regF tmp, regF tmp2) %{
   predicate(UseSSE > 2 && UseAVX == 0);
   match(Set dst (AddReductionVI src1 src2));
-  effect(TEMP tmp2, TEMP tmp);
-  format %{ "movdqu  $tmp2,$src2\n\t"
-            "phaddd  $tmp2,$tmp2\n\t"
-            "phaddd  $tmp2,$tmp2\n\t"
-            "movd    $tmp,$src1\n\t"
-            "paddd   $tmp,$tmp2\n\t"
-            "movd    $dst,$tmp\t! add reduction4I" %}
-  ins_encode %{
-    __ movdqu($tmp2$$XMMRegister, $src2$$XMMRegister);
-    __ phaddd($tmp2$$XMMRegister, $tmp2$$XMMRegister);
-    __ phaddd($tmp2$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdl($tmp$$XMMRegister, $src1$$Register);
-    __ paddd($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdl($dst$$Register, $tmp$$XMMRegister);
+  effect(TEMP tmp, TEMP tmp2);
+  format %{ "movdqu  $tmp,$src2\n\t"
+            "phaddd  $tmp,$tmp\n\t"
+            "phaddd  $tmp,$tmp\n\t"
+            "movd    $tmp2,$src1\n\t"
+            "paddd   $tmp2,$tmp\n\t"
+            "movd    $dst,$tmp2\t! add reduction4I" %}
+  ins_encode %{
+    __ movdqu($tmp$$XMMRegister, $src2$$XMMRegister);
+    __ phaddd($tmp$$XMMRegister, $tmp$$XMMRegister);
+    __ phaddd($tmp$$XMMRegister, $tmp$$XMMRegister);
+    __ movdl($tmp2$$XMMRegister, $src1$$Register);
+    __ paddd($tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ movdl($dst$$Register, $tmp2$$XMMRegister);
   %}
   ins_pipe( pipe_slow );
 %}
 
 instruct rvadd4I_reduction_reg(rRegI dst, rRegI src1, vecX src2, regF tmp, regF tmp2) %{
-  predicate(UseAVX > 0 && UseAVX < 3);
+  predicate(VM_Version::supports_avxonly());
   match(Set dst (AddReductionVI src1 src2));
   effect(TEMP tmp, TEMP tmp2);
   format %{ "vphaddd  $tmp,$src2,$src2\n\t"
-            "vphaddd  $tmp,$tmp,$tmp2\n\t"
+            "vphaddd  $tmp,$tmp,$tmp\n\t"
             "movd     $tmp2,$src1\n\t"
             "vpaddd   $tmp2,$tmp2,$tmp\n\t"
             "movd     $dst,$tmp2\t! add reduction4I" %}
   ins_encode %{
     int vector_len = 0;
     __ vphaddd($tmp$$XMMRegister, $src2$$XMMRegister, $src2$$XMMRegister, vector_len);
-    __ vphaddd($tmp$$XMMRegister, $tmp$$XMMRegister, $tmp2$$XMMRegister, vector_len);
+    __ vphaddd($tmp$$XMMRegister, $tmp$$XMMRegister, $tmp$$XMMRegister, vector_len);
     __ movdl($tmp2$$XMMRegister, $src1$$Register);
     __ vpaddd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister, vector_len);
     __ movdl($dst$$Register, $tmp2$$XMMRegister);
@@ -4657,7 +4778,7 @@
 %}
 
 instruct rvadd8I_reduction_reg(rRegI dst, rRegI src1, vecY src2, regF tmp, regF tmp2) %{
-  predicate(UseAVX > 0 && UseAVX < 3);
+  predicate(VM_Version::supports_avxonly());
   match(Set dst (AddReductionVI src1 src2));
   effect(TEMP tmp, TEMP tmp2);
   format %{ "vphaddd  $tmp,$src2,$src2\n\t"
@@ -4712,7 +4833,7 @@
   predicate(UseAVX > 2);
   match(Set dst (AddReductionVI src1 src2));
   effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vextracti64x4  $tmp3,$src2\n\t"
+  format %{ "vextracti64x4  $tmp3,$src2,0x1\n\t"
             "vpaddd  $tmp3,$tmp3,$src2\n\t"
             "vextracti128   $tmp,$tmp3\n\t"
             "vpaddd  $tmp,$tmp,$tmp3\n\t"
@@ -4724,7 +4845,7 @@
             "vpaddd  $tmp2,$tmp,$tmp2\n\t"
             "movd    $dst,$tmp2\t! mul reduction16I" %}
   ins_encode %{
-    __ vextracti64x4h($tmp3$$XMMRegister, $src2$$XMMRegister);
+    __ vextracti64x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 1);
     __ vpaddd($tmp3$$XMMRegister, $tmp3$$XMMRegister, $src2$$XMMRegister, 1);
     __ vextracti128h($tmp$$XMMRegister, $tmp3$$XMMRegister);
     __ vpaddd($tmp$$XMMRegister, $tmp$$XMMRegister, $tmp3$$XMMRegister, 0);
@@ -4763,7 +4884,7 @@
   predicate(UseAVX > 2);
   match(Set dst (AddReductionVL src1 src2));
   effect(TEMP tmp, TEMP tmp2);
-  format %{ "vextracti64x2  $tmp,$src2, 0x1\n\t"
+  format %{ "vextracti128  $tmp,$src2\n\t"
             "vpaddq  $tmp2,$tmp,$src2\n\t"
             "pshufd  $tmp,$tmp2,0xE\n\t"
             "vpaddq  $tmp2,$tmp2,$tmp\n\t"
@@ -4771,7 +4892,7 @@
             "vpaddq  $tmp2,$tmp2,$tmp\n\t"
             "movdq   $dst,$tmp2\t! add reduction4L" %}
   ins_encode %{
-    __ vextracti64x2h($tmp$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vextracti128h($tmp$$XMMRegister, $src2$$XMMRegister);
     __ vpaddq($tmp2$$XMMRegister, $tmp$$XMMRegister, $src2$$XMMRegister, 0);
     __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
     __ vpaddq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister, 0);
@@ -4786,7 +4907,7 @@
   predicate(UseAVX > 2);
   match(Set dst (AddReductionVL src1 src2));
   effect(TEMP tmp, TEMP tmp2);
-  format %{ "vextracti64x4  $tmp2,$src2\n\t"
+  format %{ "vextracti64x4  $tmp2,$src2,0x1\n\t"
             "vpaddq  $tmp2,$tmp2,$src2\n\t"
             "vextracti128   $tmp,$tmp2\n\t"
             "vpaddq  $tmp2,$tmp2,$tmp\n\t"
@@ -4796,7 +4917,7 @@
             "vpaddq  $tmp2,$tmp2,$tmp\n\t"
             "movdq   $dst,$tmp2\t! add reduction8L" %}
   ins_encode %{
-    __ vextracti64x4h($tmp2$$XMMRegister, $src2$$XMMRegister);
+    __ vextracti64x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 1);
     __ vpaddq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $src2$$XMMRegister, 1);
     __ vextracti128h($tmp$$XMMRegister, $tmp2$$XMMRegister);
     __ vpaddq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister, 0);
@@ -4810,290 +4931,280 @@
 %}
 #endif
 
-instruct rsadd2F_reduction_reg(regF dst, regF src1, vecD src2, regF tmp, regF tmp2) %{
+instruct rsadd2F_reduction_reg(regF dst, vecD src2, regF tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "addss   $tmp,$src2\n\t"
-            "pshufd  $tmp2,$src2,0x01\n\t"
-            "addss   $tmp,$tmp2\n\t"
-            "movdqu  $dst,$tmp\t! add reduction2F" %}
-  ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ addss($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ addss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdqu($dst$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvadd2F_reduction_reg(regF dst, regF src1, vecD src2, regF tmp, regF tmp2) %{
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "addss   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0x01\n\t"
+            "addss   $dst,$tmp\t! add reduction2F" %}
+  ins_encode %{
+    __ addss($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
+    __ addss($dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvadd2F_reduction_reg(regF dst, vecD src2, regF tmp) %{
   predicate(UseAVX > 0);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp2, TEMP tmp);
-  format %{ "vaddss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "vaddss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vaddss  $dst,$tmp2,$tmp\t! add reduction2F" %}
-  ins_encode %{
-    __ vaddss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddss  $dst,$dst,$tmp\t! add reduction2F" %}
+  ins_encode %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vaddss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rsadd4F_reduction_reg(regF dst, regF src1, vecX src2, regF tmp, regF tmp2) %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rsadd4F_reduction_reg(regF dst, vecX src2, regF tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "addss   $tmp,$src2\n\t"
-            "pshufd  $tmp2,$src2,0x01\n\t"
-            "addss   $tmp,$tmp2\n\t"
-            "pshufd  $tmp2,$src2,0x02\n\t"
-            "addss   $tmp,$tmp2\n\t"
-            "pshufd  $tmp2,$src2,0x03\n\t"
-            "addss   $tmp,$tmp2\n\t"
-            "movdqu  $dst,$tmp\t! add reduction4F" %}
-  ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ addss($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ addss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ addss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ addss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdqu($dst$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvadd4F_reduction_reg(regF dst, regF src1, vecX src2, regF tmp, regF tmp2) %{
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "addss   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0x01\n\t"
+            "addss   $dst,$tmp\n\t"
+            "pshufd  $tmp,$src2,0x02\n\t"
+            "addss   $dst,$tmp\n\t"
+            "pshufd  $tmp,$src2,0x03\n\t"
+            "addss   $dst,$tmp\t! add reduction4F" %}
+  ins_encode %{
+    __ addss($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
+    __ addss($dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
+    __ addss($dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
+    __ addss($dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvadd4F_reduction_reg(regF dst, vecX src2, regF tmp) %{
   predicate(UseAVX > 0);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "vaddss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst);
+  format %{ "vaddss  $dst,dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vaddss  $dst,$tmp2,$tmp\t! add reduction4F" %}
-  ins_encode %{
-    __ vaddss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddss  $dst,$dst,$tmp\t! add reduction4F" %}
+  ins_encode %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vaddss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct radd8F_reduction_reg(regF dst, regF src1, vecY src2, regF tmp, regF tmp2, regF tmp3) %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct radd8F_reduction_reg(regF dst, vecY src2, regF tmp, regF tmp2) %{
   predicate(UseAVX > 0);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vaddss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vaddss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf128  $tmp3,$src2\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vaddss  $dst,$tmp2,$tmp\t! add reduction8F" %}
-  ins_encode %{
-    __ vaddss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "vextractf128  $tmp2,$src2\n\t"
+            "vaddss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vaddss  $dst,$dst,$tmp\t! add reduction8F" %}
+  ins_encode %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf128h($tmp3$$XMMRegister, $src2$$XMMRegister);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vaddss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct radd16F_reduction_reg(regF dst, regF src1, vecZ src2, regF tmp, regF tmp2, regF tmp3) %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf128h($tmp2$$XMMRegister, $src2$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct radd16F_reduction_reg(regF dst, vecZ src2, regF tmp, regF tmp2) %{
   predicate(UseAVX > 2);
-  match(Set dst (AddReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vaddss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vaddss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x1\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x2\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x3\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vaddss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vaddss  $dst,$tmp2,$tmp\t! add reduction16F" %}
-  ins_encode %{
-    __ vaddss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x1\n\t"
+            "vaddss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x2\n\t"
+            "vaddss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x3\n\t"
+            "vaddss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vaddss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vaddss  $dst,$dst,$tmp\t! add reduction16F" %}
+  ins_encode %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x1);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x2);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x3);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vaddss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vaddss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rsadd2D_reduction_reg(regD dst, regD src1, vecX src2, regD tmp) %{
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x2);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x3);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vaddss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rsadd2D_reduction_reg(regD dst, vecX src2, regD tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (AddReductionVD src1 src2));
+  match(Set dst (AddReductionVD dst src2));
   effect(TEMP tmp, TEMP dst);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "addsd   $tmp,$src2\n\t"
-            "pshufd  $dst,$src2,0xE\n\t"
+  format %{ "addsd   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0xE\n\t"
             "addsd   $dst,$tmp\t! add reduction2D" %}
   ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ addsd($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($dst$$XMMRegister, $src2$$XMMRegister, 0xE);
+    __ addsd($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
     __ addsd($dst$$XMMRegister, $tmp$$XMMRegister);
   %}
   ins_pipe( pipe_slow );
 %}
 
-instruct rvadd2D_reduction_reg(regD dst, regD src1, vecX src2, regD tmp, regD tmp2) %{
+instruct rvadd2D_reduction_reg(regD dst, vecX src2, regD tmp) %{
   predicate(UseAVX > 0);
-  match(Set dst (AddReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "vaddsd  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVD dst src2));
+  effect(TEMP tmp, TEMP dst);
+  format %{ "vaddsd  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0xE\n\t"
-            "vaddsd  $dst,$tmp2,$tmp\t! add reduction2D" %}
-  ins_encode %{
-    __ vaddsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddsd  $dst,$dst,$tmp\t! add reduction2D" %}
+  ins_encode %{
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vaddsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvadd4D_reduction_reg(regD dst, regD src1, vecY src2, regD tmp, regD tmp2, regD tmp3) %{
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvadd4D_reduction_reg(regD dst, vecY src2, regD tmp, regD tmp2) %{
   predicate(UseAVX > 0);
-  match(Set dst (AddReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vaddsd  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVD dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vaddsd  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0xE\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf128  $tmp3,$src2\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vaddsd  $dst,$tmp2,$tmp\t! add reduction4D" %}
-  ins_encode %{
-    __ vaddsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4h  $tmp2,$src2, 0x1\n\t"
+            "vaddsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vaddsd  $dst,$dst,$tmp\t! add reduction4D" %}
+  ins_encode %{
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf128h($tmp3$$XMMRegister, $src2$$XMMRegister);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vaddsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvadd8D_reduction_reg(regD dst, regD src1, vecZ src2, regD tmp, regD tmp2, regD tmp3) %{
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvadd8D_reduction_reg(regD dst, vecZ src2, regD tmp, regD tmp2) %{
   predicate(UseAVX > 2);
-  match(Set dst (AddReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vaddsd  $tmp2,$src1,$src2\n\t"
+  match(Set dst (AddReductionVD dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vaddsd  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0xE\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x1\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x2\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x3\n\t"
-            "vaddsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vaddsd  $dst,$tmp2,$tmp\t! add reduction8D" %}
-  ins_encode %{
-    __ vaddsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vaddsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x1\n\t"
+            "vaddsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vaddsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x2\n\t"
+            "vaddsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vaddsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x3\n\t"
+            "vaddsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vaddsd  $dst,$dst,$tmp\t! add reduction8D" %}
+  ins_encode %{
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x1);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x2);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x3);
-    __ vaddsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vaddsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x2);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x3);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vaddsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
   %}
   ins_pipe( pipe_slow );
 %}
@@ -5216,7 +5327,7 @@
   predicate(UseAVX > 2);
   match(Set dst (MulReductionVI src1 src2));
   effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vextracti64x4  $tmp3,$src2\n\t"
+  format %{ "vextracti64x4  $tmp3,$src2,0x1\n\t"
             "vpmulld  $tmp3,$tmp3,$src2\n\t"
             "vextracti128   $tmp,$tmp3\n\t"
             "vpmulld  $tmp,$tmp,$src2\n\t"
@@ -5228,7 +5339,7 @@
             "vpmulld  $tmp2,$tmp,$tmp2\n\t"
             "movd     $dst,$tmp2\t! mul reduction16I" %}
   ins_encode %{
-    __ vextracti64x4h($tmp3$$XMMRegister, $src2$$XMMRegister);
+    __ vextracti64x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 1);
     __ vpmulld($tmp3$$XMMRegister, $tmp3$$XMMRegister, $src2$$XMMRegister, 1);
     __ vextracti128h($tmp$$XMMRegister, $tmp3$$XMMRegister);
     __ vpmulld($tmp$$XMMRegister, $tmp$$XMMRegister, $tmp3$$XMMRegister, 0);
@@ -5267,7 +5378,7 @@
   predicate(UseAVX > 2 && VM_Version::supports_avx512dq());
   match(Set dst (MulReductionVL src1 src2));
   effect(TEMP tmp, TEMP tmp2);
-  format %{ "vextracti64x2  $tmp,$src2, 0x1\n\t"
+  format %{ "vextracti128  $tmp,$src2\n\t"
             "vpmullq  $tmp2,$tmp,$src2\n\t"
             "pshufd   $tmp,$tmp2,0xE\n\t"
             "vpmullq  $tmp2,$tmp2,$tmp\n\t"
@@ -5275,7 +5386,7 @@
             "vpmullq  $tmp2,$tmp2,$tmp\n\t"
             "movdq    $dst,$tmp2\t! mul reduction4L" %}
   ins_encode %{
-    __ vextracti64x2h($tmp$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vextracti128h($tmp$$XMMRegister, $src2$$XMMRegister);
     __ vpmullq($tmp2$$XMMRegister, $tmp$$XMMRegister, $src2$$XMMRegister, 0);
     __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
     __ vpmullq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister, 0);
@@ -5290,7 +5401,7 @@
   predicate(UseAVX > 2 && VM_Version::supports_avx512dq());
   match(Set dst (MulReductionVL src1 src2));
   effect(TEMP tmp, TEMP tmp2);
-  format %{ "vextracti64x4  $tmp2,$src2\n\t"
+  format %{ "vextracti64x4  $tmp2,$src2,0x1\n\t"
             "vpmullq  $tmp2,$tmp2,$src2\n\t"
             "vextracti128   $tmp,$tmp2\n\t"
             "vpmullq  $tmp2,$tmp2,$tmp\n\t"
@@ -5300,7 +5411,7 @@
             "vpmullq  $tmp2,$tmp2,$tmp\n\t"
             "movdq    $dst,$tmp2\t! mul reduction8L" %}
   ins_encode %{
-    __ vextracti64x4h($tmp2$$XMMRegister, $src2$$XMMRegister);
+    __ vextracti64x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 1);
     __ vpmullq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $src2$$XMMRegister, 1);
     __ vextracti128h($tmp$$XMMRegister, $tmp2$$XMMRegister);
     __ vpmullq($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister, 0);
@@ -5314,290 +5425,280 @@
 %}
 #endif
 
-instruct rsmul2F_reduction(regF dst, regF src1, vecD src2, regF tmp, regF tmp2) %{
+instruct rsmul2F_reduction(regF dst, vecD src2, regF tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "mulss   $tmp,$src2\n\t"
-            "pshufd  $tmp2,$src2,0x01\n\t"
-            "mulss   $tmp,$tmp2\n\t"
-            "movdqu  $dst,$tmp\t! mul reduction2F" %}
-  ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ mulss($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ mulss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdqu($dst$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul2F_reduction_reg(regF dst, regF src1, vecD src2, regF tmp, regF tmp2) %{
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "mulss   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0x01\n\t"
+            "mulss   $dst,$tmp\t! mul reduction2F" %}
+  ins_encode %{
+    __ mulss($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
+    __ mulss($dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul2F_reduction_reg(regF dst, vecD src2, regF tmp) %{
   predicate(UseAVX > 0);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "vmulss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst);
+  format %{ "vmulss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vmulss  $dst,$tmp2,$tmp\t! mul reduction2F" %}
-  ins_encode %{
-    __ vmulss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulss  $dst,$dst,$tmp\t! mul reduction2F" %}
+  ins_encode %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vmulss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rsmul4F_reduction_reg(regF dst, regF src1, vecX src2, regF tmp, regF tmp2) %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rsmul4F_reduction_reg(regF dst, vecX src2, regF tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "mulss   $tmp,$src2\n\t"
-            "pshufd  $tmp2,$src2,0x01\n\t"
-            "mulss   $tmp,$tmp2\n\t"
-            "pshufd  $tmp2,$src2,0x02\n\t"
-            "mulss   $tmp,$tmp2\n\t"
-            "pshufd  $tmp2,$src2,0x03\n\t"
-            "mulss   $tmp,$tmp2\n\t"
-            "movdqu  $dst,$tmp\t! mul reduction4F" %}
-  ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ mulss($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ mulss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ mulss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ pshufd($tmp2$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ mulss($tmp$$XMMRegister, $tmp2$$XMMRegister);
-    __ movdqu($dst$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul4F_reduction_reg(regF dst, regF src1, vecX src2, regF tmp, regF tmp2) %{
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "mulss   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0x01\n\t"
+            "mulss   $dst,$tmp\n\t"
+            "pshufd  $tmp,$src2,0x02\n\t"
+            "mulss   $dst,$tmp\n\t"
+            "pshufd  $tmp,$src2,0x03\n\t"
+            "mulss   $dst,$tmp\t! mul reduction4F" %}
+  ins_encode %{
+    __ mulss($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
+    __ mulss($dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
+    __ mulss($dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
+    __ mulss($dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul4F_reduction_reg(regF dst, vecX src2, regF tmp) %{
   predicate(UseAVX > 0);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "vmulss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst);
+  format %{ "vmulss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vmulss  $dst,$tmp2,$tmp\t! mul reduction4F" %}
-  ins_encode %{
-    __ vmulss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulss  $dst,$dst,$tmp\t! mul reduction4F" %}
+  ins_encode %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vmulss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul8F_reduction_reg(regF dst, regF src1, vecY src2, regF tmp, regF tmp2, regF tmp3) %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul8F_reduction_reg(regF dst, vecY src2, regF tmp, regF tmp2) %{
   predicate(UseAVX > 0);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vmulss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vmulss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf128  $tmp3,$src2\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vmulss  $dst,$tmp2,$tmp\t! mul reduction8F" %}
-  ins_encode %{
-    __ vmulss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "vextractf128  $tmp2,$src2\n\t"
+            "vmulss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vmulss  $dst,$dst,$tmp\t! mul reduction8F" %}
+  ins_encode %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf128h($tmp3$$XMMRegister, $src2$$XMMRegister);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vmulss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul16F_reduction_reg(regF dst, regF src1, vecZ src2, regF tmp, regF tmp2, regF tmp3) %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf128h($tmp2$$XMMRegister, $src2$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul16F_reduction_reg(regF dst, vecZ src2, regF tmp, regF tmp2) %{
   predicate(UseAVX > 2);
-  match(Set dst (MulReductionVF src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vmulss  $tmp2,$src1,$src2\n\t"
+  match(Set dst (MulReductionVF dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vmulss  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
             "pshufd  $tmp,$src2,0x03\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf32x4  $tmp3,$src2, 0x1\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf32x4  $tmp3,$src2, 0x2\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf32x4  $tmp3,$src2, 0x3\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0x01\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x02\n\t"
-            "vmulss  $tmp2,$tmp2,$tmp\n\t"
-            "pshufd  $tmp,$tmp3,0x03\n\t"
-            "vmulss  $dst,$tmp2,$tmp\t! mul reduction16F" %}
-  ins_encode %{
-    __ vmulss($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x1\n\t"
+            "vmulss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x2\n\t"
+            "vmulss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x3\n\t"
+            "vmulss  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0x01\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x02\n\t"
+            "vmulss  $dst,$dst,$tmp\n\t"
+            "pshufd  $tmp,$tmp2,0x03\n\t"
+            "vmulss  $dst,$dst,$tmp\t! mul reduction16F" %}
+  ins_encode %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0x03);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x1);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x2);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf32x4h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x3);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x01);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x02);
-    __ vmulss($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0x03);
-    __ vmulss($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rsmul2D_reduction_reg(regD dst, regD src1, vecX src2, regD tmp) %{
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x2);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x3);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x01);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x02);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0x03);
+    __ vmulss($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rsmul2D_reduction_reg(regD dst, vecX src2, regD tmp) %{
   predicate(UseSSE >= 1 && UseAVX == 0);
-  match(Set dst (MulReductionVD src1 src2));
+  match(Set dst (MulReductionVD dst src2));
+  effect(TEMP dst, TEMP tmp);
+  format %{ "mulsd   $dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0xE\n\t"
+            "mulsd   $dst,$tmp\t! mul reduction2D" %}
+  ins_encode %{
+    __ mulsd($dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
+    __ mulsd($dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul2D_reduction_reg(regD dst, vecX src2, regD tmp) %{
+  predicate(UseAVX > 0);
+  match(Set dst (MulReductionVD dst src2));
   effect(TEMP tmp, TEMP dst);
-  format %{ "movdqu  $tmp,$src1\n\t"
-            "mulsd   $tmp,$src2\n\t"
-            "pshufd  $dst,$src2,0xE\n\t"
-            "mulsd   $dst,$tmp\t! mul reduction2D" %}
-  ins_encode %{
-    __ movdqu($tmp$$XMMRegister, $src1$$XMMRegister);
-    __ mulsd($tmp$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($dst$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ mulsd($dst$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul2D_reduction_reg(regD dst, regD src1, vecX src2, regD tmp, regD tmp2) %{
+  format %{ "vmulsd  $dst,$dst,$src2\n\t"
+            "pshufd  $tmp,$src2,0xE\n\t"
+            "vmulsd  $dst,$dst,$tmp\t! mul reduction2D" %}
+  ins_encode %{
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul4D_reduction_reg(regD dst, vecY src2, regD tmp, regD tmp2) %{
   predicate(UseAVX > 0);
-  match(Set dst (MulReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2);
-  format %{ "vmulsd  $tmp2,$src1,$src2\n\t"
+  match(Set dst (MulReductionVD dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vmulsd  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0xE\n\t"
-            "vmulsd  $dst,$tmp2,$tmp\t! mul reduction2D" %}
-  ins_encode %{
-    __ vmulsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulsd  $dst,$dst,$tmp\n\t"
+            "vextractf128  $tmp2,$src2\n\t"
+            "vmulsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vmulsd  $dst,$dst,$tmp\t! mul reduction4D" %}
+  ins_encode %{
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vmulsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul4D_reduction_reg(regD dst, regD src1, vecY src2, regD tmp, regD tmp2, regD tmp3) %{
-  predicate(UseAVX > 0);
-  match(Set dst (MulReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vmulsd  $tmp2,$src1,$src2\n\t"
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf128h($tmp2$$XMMRegister, $src2$$XMMRegister);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct rvmul8D_reduction_reg(regD dst, vecZ src2, regD tmp, regD tmp2) %{
+  predicate(UseAVX > 2);
+  match(Set dst (MulReductionVD dst src2));
+  effect(TEMP tmp, TEMP dst, TEMP tmp2);
+  format %{ "vmulsd  $dst,$dst,$src2\n\t"
             "pshufd  $tmp,$src2,0xE\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf128  $tmp3,$src2\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vmulsd  $dst,$tmp2,$tmp\t! mul reduction4D" %}
-  ins_encode %{
-    __ vmulsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
+            "vmulsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x1\n\t"
+            "vmulsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$src2,0xE\n\t"
+            "vmulsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x2\n\t"
+            "vmulsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vmulsd  $dst,$dst,$tmp\n\t"
+            "vextractf32x4  $tmp2,$src2, 0x3\n\t"
+            "vmulsd  $dst,$dst,$tmp2\n\t"
+            "pshufd  $tmp,$tmp2,0xE\n\t"
+            "vmulsd  $dst,$dst,$tmp\t! mul reduction8D" %}
+  ins_encode %{
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $src2$$XMMRegister);
     __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf128h($tmp3$$XMMRegister, $src2$$XMMRegister);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vmulsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct rvmul8D_reduction_reg(regD dst, regD src1, vecZ src2, regD tmp, regD tmp2, regD tmp3) %{
-  predicate(UseAVX > 2);
-  match(Set dst (MulReductionVD src1 src2));
-  effect(TEMP tmp, TEMP tmp2, TEMP tmp3);
-  format %{ "vmulsd  $tmp2,$src1,$src2\n\t"
-            "pshufd  $tmp,$src2,0xE\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x1\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$src2,0xE\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x2\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp\n\t"
-            "vextractf64x2  $tmp3,$src2, 0x3\n\t"
-            "vmulsd  $tmp2,$tmp2,$tmp3\n\t"
-            "pshufd  $tmp,$tmp3,0xE\n\t"
-            "vmulsd  $dst,$tmp2,$tmp\t! mul reduction8D" %}
-  ins_encode %{
-    __ vmulsd($tmp2$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $src2$$XMMRegister, 0xE);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x1);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x2);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
-    __ vextractf64x2h($tmp3$$XMMRegister, $src2$$XMMRegister, 0x3);
-    __ vmulsd($tmp2$$XMMRegister, $tmp2$$XMMRegister, $tmp3$$XMMRegister);
-    __ pshufd($tmp$$XMMRegister, $tmp3$$XMMRegister, 0xE);
-    __ vmulsd($dst$$XMMRegister, $tmp2$$XMMRegister, $tmp$$XMMRegister);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x1);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x2);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
+    __ vextractf32x4h($tmp2$$XMMRegister, $src2$$XMMRegister, 0x3);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp2$$XMMRegister);
+    __ pshufd($tmp$$XMMRegister, $tmp2$$XMMRegister, 0xE);
+    __ vmulsd($dst$$XMMRegister, $dst$$XMMRegister, $tmp$$XMMRegister);
   %}
   ins_pipe( pipe_slow );
 %}
@@ -5608,7 +5709,7 @@
 
 // Bytes vector add
 instruct vadd4B(vecS dst, vecS src) %{
-  predicate(n->as_Vector()->length() == 4);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 4);
   match(Set dst (AddVB dst src));
   format %{ "paddb   $dst,$src\t! add packed4B" %}
   ins_encode %{
@@ -5617,8 +5718,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd4B_reg(vecS dst, vecS src1, vecS src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vadd4B_reg_avx(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (AddVB src1 src2));
   format %{ "vpaddb  $dst,$src1,$src2\t! add packed4B" %}
   ins_encode %{
@@ -5628,8 +5729,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd4B_mem(vecS dst, vecS src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vadd4B_reg_evex(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVB src1 src2));
+  format %{ "vpaddb  $dst,$src1,$src2\t! add packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4B_reg_evex_special(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddb  $dst,$dst,$src2\t! add packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4B_mem_avx(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (AddVB src (LoadVector mem)));
   format %{ "vpaddb  $dst,$src,$mem\t! add packed4B" %}
   ins_encode %{
@@ -5639,8 +5763,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd4B_mem_evex(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVB src (LoadVector mem)));
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4B_mem_evex_special(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVB dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd8B(vecD dst, vecD src) %{
-  predicate(n->as_Vector()->length() == 8);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 8);
   match(Set dst (AddVB dst src));
   format %{ "paddb   $dst,$src\t! add packed8B" %}
   ins_encode %{
@@ -5649,8 +5796,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd8B_reg(vecD dst, vecD src1, vecD src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vadd8B_reg_avx(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (AddVB src1 src2));
   format %{ "vpaddb  $dst,$src1,$src2\t! add packed8B" %}
   ins_encode %{
@@ -5660,8 +5807,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd8B_mem(vecD dst, vecD src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vadd8B_reg_evex(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVB src1 src2));
+  format %{ "vpaddb  $dst,$src1,$src2\t! add packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8B_reg_evex_special(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddb  $dst,$dst,$src2\t! add packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8B_mem_avx(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (AddVB src (LoadVector mem)));
   format %{ "vpaddb  $dst,$src,$mem\t! add packed8B" %}
   ins_encode %{
@@ -5671,8 +5841,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd8B_mem_evex(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVB src (LoadVector mem)));
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8B_mem_evex_special(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVB dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd16B(vecX dst, vecX src) %{
-  predicate(n->as_Vector()->length() == 16);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 16);
   match(Set dst (AddVB dst src));
   format %{ "paddb   $dst,$src\t! add packed16B" %}
   ins_encode %{
@@ -5681,8 +5874,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd16B_reg(vecX dst, vecX src1, vecX src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 16);
+instruct vadd16B_reg_avx(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 16);
   match(Set dst (AddVB src1 src2));
   format %{ "vpaddb  $dst,$src1,$src2\t! add packed16B" %}
   ins_encode %{
@@ -5692,8 +5885,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd16B_mem(vecX dst, vecX src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 16);
+instruct vadd16B_reg_evex(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVB src1 src2));
+  format %{ "vpaddb  $dst,$src1,$src2\t! add packed16B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16B_reg_evex_special(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddb  $dst,$dst,$src2\t! add packed16B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16B_mem_avx(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 16);
   match(Set dst (AddVB src (LoadVector mem)));
   format %{ "vpaddb  $dst,$src,$mem\t! add packed16B" %}
   ins_encode %{
@@ -5703,8 +5919,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd32B_reg(vecY dst, vecY src1, vecY src2) %{
-  predicate(UseAVX > 1 && n->as_Vector()->length() == 32);
+instruct vadd16B_mem_evex(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVB src (LoadVector mem)));
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed16B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16B_mem_evex_special(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVB dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed16B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd32B_reg_avx(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx256only() && n->as_Vector()->length() == 32);
   match(Set dst (AddVB src1 src2));
   format %{ "vpaddb  $dst,$src1,$src2\t! add packed32B" %}
   ins_encode %{
@@ -5714,8 +5953,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd32B_mem(vecY dst, vecY src, memory mem) %{
-  predicate(UseAVX > 1 && n->as_Vector()->length() == 32);
+instruct vadd32B_reg_evex(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 32);
+  match(Set dst (AddVB src1 src2));
+  format %{ "vpaddb  $dst,$src1,$src2\t! add packed32B" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd32B_reg_evex_special(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 32);
+  match(Set dst (AddVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddb  $dst,$dst,$src2\t! add packed32B" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd32B_mem_avx(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx256only() && n->as_Vector()->length() == 32);
   match(Set dst (AddVB src (LoadVector mem)));
   format %{ "vpaddb  $dst,$src,$mem\t! add packed32B" %}
   ins_encode %{
@@ -5725,8 +5987,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd32B_mem_evex(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 32);
+  match(Set dst (AddVB src (LoadVector mem)));
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed32B" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd32B_mem_evex_special(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 32);
+  match(Set dst (AddVB dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddb  $dst,$src,$mem\t! add packed32B" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd64B_reg(vecZ dst, vecZ src1, vecZ src2) %{
-  predicate(UseAVX > 2 && n->as_Vector()->length() == 64);
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 64);
   match(Set dst (AddVB src1 src2));
   format %{ "vpaddb  $dst,$src1,$src2\t! add packed64B" %}
   ins_encode %{
@@ -5737,7 +6022,7 @@
 %}
 
 instruct vadd64B_mem(vecZ dst, vecZ src, memory mem) %{
-  predicate(UseAVX > 2 && n->as_Vector()->length() == 64);
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 64);
   match(Set dst (AddVB src (LoadVector mem)));
   format %{ "vpaddb  $dst,$src,$mem\t! add packed64B" %}
   ins_encode %{
@@ -5749,7 +6034,7 @@
 
 // Shorts/Chars vector add
 instruct vadd2S(vecS dst, vecS src) %{
-  predicate(n->as_Vector()->length() == 2);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 2);
   match(Set dst (AddVS dst src));
   format %{ "paddw   $dst,$src\t! add packed2S" %}
   ins_encode %{
@@ -5758,8 +6043,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd2S_reg(vecS dst, vecS src1, vecS src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 2);
+instruct vadd2S_reg_avx(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 2);
   match(Set dst (AddVS src1 src2));
   format %{ "vpaddw  $dst,$src1,$src2\t! add packed2S" %}
   ins_encode %{
@@ -5769,8 +6054,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd2S_mem(vecS dst, vecS src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 2);
+instruct vadd2S_reg_evex(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 2);
+  match(Set dst (AddVS src1 src2));
+  format %{ "vpaddw  $dst,$src1,$src2\t! add packed2S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd2S_reg_evex_special(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 2);
+  match(Set dst (AddVS dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddw  $dst,$dst,$src2\t! add packed2S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd2S_mem_avx(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 2);
   match(Set dst (AddVS src (LoadVector mem)));
   format %{ "vpaddw  $dst,$src,$mem\t! add packed2S" %}
   ins_encode %{
@@ -5780,8 +6088,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd2S_mem_evex(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 2);
+  match(Set dst (AddVS src (LoadVector mem)));
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed2S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd2S_mem_evex_special(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 2);
+  match(Set dst (AddVS dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed2S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd4S(vecD dst, vecD src) %{
-  predicate(n->as_Vector()->length() == 4);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 4);
   match(Set dst (AddVS dst src));
   format %{ "paddw   $dst,$src\t! add packed4S" %}
   ins_encode %{
@@ -5790,8 +6121,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd4S_reg(vecD dst, vecD src1, vecD src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vadd4S_reg_avx(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (AddVS src1 src2));
   format %{ "vpaddw  $dst,$src1,$src2\t! add packed4S" %}
   ins_encode %{
@@ -5801,8 +6132,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd4S_mem(vecD dst, vecD src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vadd4S_reg_evex(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVS src1 src2));
+  format %{ "vpaddw  $dst,$src1,$src2\t! add packed4S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4S_reg_evex_special(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVS dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddw  $dst,$dst,$src2\t! add packed4S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4S_mem_avx(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (AddVS src (LoadVector mem)));
   format %{ "vpaddw  $dst,$src,$mem\t! add packed4S" %}
   ins_encode %{
@@ -5812,8 +6166,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd4S_mem_evex(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVS src (LoadVector mem)));
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed4S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd4S_mem_evex_special(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (AddVS dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed4S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd8S(vecX dst, vecX src) %{
-  predicate(n->as_Vector()->length() == 8);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 8);
   match(Set dst (AddVS dst src));
   format %{ "paddw   $dst,$src\t! add packed8S" %}
   ins_encode %{
@@ -5822,8 +6199,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd8S_reg(vecX dst, vecX src1, vecX src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vadd8S_reg_avx(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (AddVS src1 src2));
   format %{ "vpaddw  $dst,$src1,$src2\t! add packed8S" %}
   ins_encode %{
@@ -5833,8 +6210,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd8S_mem(vecX dst, vecX src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vadd8S_reg_evex(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVS src1 src2));
+  format %{ "vpaddw  $dst,$src1,$src2\t! add packed8S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8S_reg_evex_special(vecX dst, vecX src1, vecX src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVS dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddw  $dst,$dst,$src2\t! add packed8S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8S_mem_avx(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (AddVS src (LoadVector mem)));
   format %{ "vpaddw  $dst,$src,$mem\t! add packed8S" %}
   ins_encode %{
@@ -5844,8 +6244,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd16S_reg(vecY dst, vecY src1, vecY src2) %{
-  predicate(UseAVX > 1 && n->as_Vector()->length() == 16);
+instruct vadd8S_mem_evex(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVS src (LoadVector mem)));
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed8S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd8S_mem_evex_special(vecX dst, vecX src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (AddVS dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed8S" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16S_reg_avx(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx256only() && n->as_Vector()->length() == 16);
   match(Set dst (AddVS src1 src2));
   format %{ "vpaddw  $dst,$src1,$src2\t! add packed16S" %}
   ins_encode %{
@@ -5855,8 +6278,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vadd16S_mem(vecY dst, vecY src, memory mem) %{
-  predicate(UseAVX > 1 && n->as_Vector()->length() == 16);
+instruct vadd16S_reg_evex(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVS src1 src2));
+  format %{ "vpaddw  $dst,$src1,$src2\t! add packed16S" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16S_reg_evex_special(vecY dst, vecY src1, vecY src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVS dst src2));
+  effect(TEMP src1);
+  format %{ "vpaddw  $dst,$dst,$src2\t! add packed16S" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddw($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16S_mem_avx(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx256only() && n->as_Vector()->length() == 16);
   match(Set dst (AddVS src (LoadVector mem)));
   format %{ "vpaddw  $dst,$src,$mem\t! add packed16S" %}
   ins_encode %{
@@ -5866,8 +6312,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vadd16S_mem_evex(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVS src (LoadVector mem)));
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed16S" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vadd16S_mem_evex_special(vecY dst, vecY src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 16);
+  match(Set dst (AddVS dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpaddw  $dst,$src,$mem\t! add packed16S" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpaddw($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vadd32S_reg(vecZ dst, vecZ src1, vecZ src2) %{
-  predicate(UseAVX > 2 && n->as_Vector()->length() == 32);
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 32);
   match(Set dst (AddVS src1 src2));
   format %{ "vpaddw  $dst,$src1,$src2\t! add packed32S" %}
   ins_encode %{
@@ -5878,7 +6347,7 @@
 %}
 
 instruct vadd32S_mem(vecZ dst, vecZ src, memory mem) %{
-  predicate(UseAVX > 2 && n->as_Vector()->length() == 32);
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 32);
   match(Set dst (AddVS src (LoadVector mem)));
   format %{ "vpaddw  $dst,$src,$mem\t! add packed32S" %}
   ins_encode %{
@@ -6264,7 +6733,7 @@
 
 // Bytes vector sub
 instruct vsub4B(vecS dst, vecS src) %{
-  predicate(n->as_Vector()->length() == 4);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 4);
   match(Set dst (SubVB dst src));
   format %{ "psubb   $dst,$src\t! sub packed4B" %}
   ins_encode %{
@@ -6273,8 +6742,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vsub4B_reg(vecS dst, vecS src1, vecS src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vsub4B_reg_avx(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (SubVB src1 src2));
   format %{ "vpsubb  $dst,$src1,$src2\t! sub packed4B" %}
   ins_encode %{
@@ -6284,8 +6753,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vsub4B_mem(vecS dst, vecS src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 4);
+instruct vsub4B_reg_evex(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (SubVB src1 src2));
+  format %{ "vpsubb  $dst,$src1,$src2\t! sub packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub4B_reg_exex_special(vecS dst, vecS src1, vecS src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 4);
+  match(Set dst (SubVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpsubb  $dst,$src1,$src2\t! sub packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub4B_mem_avx(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 4);
   match(Set dst (SubVB src (LoadVector mem)));
   format %{ "vpsubb  $dst,$src,$mem\t! sub packed4B" %}
   ins_encode %{
@@ -6295,8 +6787,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vsub4B_mem_evex(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 4);
+  match(Set dst (SubVB src (LoadVector mem)));
+  format %{ "vpsubb  $dst,$src,$mem\t! sub packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub4B_mem_evex_special(vecS dst, vecS src, memory mem) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 4);
+  match(Set dst (SubVB dst (LoadVector mem)));
+  effect(TEMP src);
+  format %{ "vpsubb  $dst,$src,$mem\t! sub packed4B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
 instruct vsub8B(vecD dst, vecD src) %{
-  predicate(n->as_Vector()->length() == 8);
+  predicate(UseAVX == 0 && n->as_Vector()->length() == 8);
   match(Set dst (SubVB dst src));
   format %{ "psubb   $dst,$src\t! sub packed8B" %}
   ins_encode %{
@@ -6305,8 +6820,8 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vsub8B_reg(vecD dst, vecD src1, vecD src2) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vsub8B_reg_avx(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (SubVB src1 src2));
   format %{ "vpsubb  $dst,$src1,$src2\t! sub packed8B" %}
   ins_encode %{
@@ -6316,8 +6831,31 @@
   ins_pipe( pipe_slow );
 %}
 
-instruct vsub8B_mem(vecD dst, vecD src, memory mem) %{
-  predicate(UseAVX > 0 && n->as_Vector()->length() == 8);
+instruct vsub8B_reg_evex(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (SubVB src1 src2));
+  format %{ "vpsubb  $dst,$src1,$src2\t! sub packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub8B_reg_evex_special(vecD dst, vecD src1, vecD src2) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 8);
+  match(Set dst (SubVB dst src2));
+  effect(TEMP src1);
+  format %{ "vpsubb  $dst,$src1,$src2\t! sub packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub8B_mem_avx(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avxonly() && n->as_Vector()->length() == 8);
   match(Set dst (SubVB src (LoadVector mem)));
   format %{ "vpsubb  $dst,$src,$mem\t! sub packed8B" %}
   ins_encode %{
@@ -6327,8 +6865,31 @@
   ins_pipe( pipe_slow );
 %}
 
+instruct vsub8B_mem_evex(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512bw() && n->as_Vector()->length() == 8);
+  match(Set dst (SubVB src (LoadVector mem)));
+  format %{ "vpsubb  $dst,$src,$mem\t! sub packed8B" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpsubb($dst$$XMMRegister, $src$$XMMRegister, $mem$$Address, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vsub8B_mem_evex_special(vecD dst, vecD src, memory mem) %{
+  predicate(VM_Version::supports_avx512nobw() && n->as_Vector()->length() == 8);