changeset 2620:b16582d6c7db

Merge
author kvn
date Thu, 07 Jul 2011 10:51:07 -0700
parents 4bf3cbef0b3e 3e23978ea0c3
children 0defeba52583 faa472957b38 5447b2c582ad
files src/share/vm/classfile/javaClasses.cpp src/share/vm/oops/methodOop.cpp
diffstat 78 files changed, 1330 insertions(+), 351 deletions(-) [+]
line wrap: on
line diff
--- a/src/cpu/sparc/vm/methodHandles_sparc.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/sparc/vm/methodHandles_sparc.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -307,11 +307,12 @@
   __ stop("damaged ricochet frame: L4 < FP");
 
   __ BIND(L_ok_2);
-  __ sub(L4_saved_args_base, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize, O7_temp);
-  __ cmp(O7_temp, FP_temp);
-  __ br(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok_3);
-  __ delayed()->nop();
-  __ stop("damaged ricochet frame: (L4 - UNREASONABLE_STACK_MOVE) > FP");
+  // Disable until we decide on it's fate
+  // __ sub(L4_saved_args_base, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize, O7_temp);
+  // __ cmp(O7_temp, FP_temp);
+  // __ br(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok_3);
+  // __ delayed()->nop();
+  // __ stop("damaged ricochet frame: (L4 - UNREASONABLE_STACK_MOVE) > FP");
 
   __ BIND(L_ok_3);
   extract_conversion_dest_type(_masm, L5_conversion, O7_temp);
@@ -547,8 +548,9 @@
   __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path);
   __ delayed()->nop();
   __ mov(O0_mtype, G5_method_type);  // required by throw_WrongMethodType
-  // mov(G3_method_handle, G3_method_handle);  // already in this register
-  __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
+  __ mov(G3_method_handle, G3_method_handle);  // already in this register
+  // O0 will be filled in with JavaThread in stub
+  __ jump_to(AddressLiteral(StubRoutines::throw_WrongMethodTypeException_entry()), O3_scratch);
   __ delayed()->nop();
 
   // here's where control starts out:
@@ -1145,23 +1147,13 @@
       // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method
       __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
       __ ld_ptr(Address(G5_method, 0), G5_method);
-      __ tst(G5_method);
-      __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
-      __ delayed()->nop();
 
       const int jobject_oop_offset = 0;
       __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
-      __ tst(G5_method);
-      __ brx(Assembler::zero, false, Assembler::pn, L_no_method);
-      __ delayed()->nop();
 
       __ verify_oop(G5_method);
       __ jump_indirect_to(G5_method_fce, O3_scratch);  // jump to compiled entry
       __ delayed()->nop();
-
-      // Do something that is at least causes a valid throw from the interpreter.
-      __ bind(L_no_method);
-      __ unimplemented("call throw_WrongMethodType_entry");
     }
     break;
 
--- a/src/cpu/sparc/vm/stubGenerator_sparc.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/sparc/vm/stubGenerator_sparc.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -440,7 +440,8 @@
 #undef __
 #define __ masm->
 
-  address generate_throw_exception(const char* name, address runtime_entry, bool restore_saved_exception_pc) {
+  address generate_throw_exception(const char* name, address runtime_entry, bool restore_saved_exception_pc,
+                                   Register arg1 = noreg, Register arg2 = noreg) {
 #ifdef ASSERT
     int insts_size = VerifyThread ? 1 * K : 600;
 #else
@@ -476,6 +477,13 @@
     __ set_last_Java_frame(last_java_sp, G0);
     if (VerifyThread)  __ mov(G2_thread, O0); // about to be smashed; pass early
     __ save_thread(noreg);
+    if (arg1 != noreg) {
+      assert(arg2 != O1, "clobbered");
+      __ mov(arg1, O1);
+    }
+    if (arg2 != noreg) {
+      __ mov(arg2, O2);
+    }
     // do the call
     BLOCK_COMMENT("call runtime_entry");
     __ call(runtime_entry, relocInfo::runtime_call_type);
@@ -3240,6 +3248,14 @@
     StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long();
     StubRoutines::_atomic_add_ptr_entry      = StubRoutines::_atomic_add_entry;
 #endif  // COMPILER2 !=> _LP64
+
+    // Build this early so it's available for the interpreter.  The
+    // stub expects the required and actual type to already be in O1
+    // and O2 respectively.
+    StubRoutines::_throw_WrongMethodTypeException_entry =
+      generate_throw_exception("WrongMethodTypeException throw_exception",
+                               CAST_FROM_FN_PTR(address, SharedRuntime::throw_WrongMethodTypeException),
+                               false, G5_method_type, G3_method_handle);
   }
 
 
--- a/src/cpu/sparc/vm/templateInterpreter_sparc.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/sparc/vm/templateInterpreter_sparc.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -128,24 +128,6 @@
 }
 
 
-// Arguments are: required type in G5_method_type, and
-// failing object (or NULL) in G3_method_handle.
-address TemplateInterpreterGenerator::generate_WrongMethodType_handler() {
-  address entry = __ pc();
-  // expression stack must be empty before entering the VM if an exception
-  // happened
-  __ empty_expression_stack();
-  // load exception object
-  __ call_VM(Oexception,
-             CAST_FROM_FN_PTR(address,
-                              InterpreterRuntime::throw_WrongMethodTypeException),
-             G5_method_type,    // required
-             G3_method_handle); // actual
-  __ should_not_reach_here();
-  return entry;
-}
-
-
 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
   address entry = __ pc();
   // expression stack must be empty before entering the VM if an exception happened
--- a/src/cpu/sparc/vm/templateTable_sparc.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/sparc/vm/templateTable_sparc.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -266,7 +266,7 @@
 
 void TemplateTable::ldc(bool wide) {
   transition(vtos, vtos);
-  Label call_ldc, notInt, notString, notClass, exit;
+  Label call_ldc, notInt, isString, notString, notClass, exit;
 
   if (wide) {
     __ get_2_byte_integer_at_bcp(1, G3_scratch, O1, InterpreterMacroAssembler::Unsigned);
@@ -317,8 +317,11 @@
 
   __ bind(notInt);
  // __ cmp(O2, JVM_CONSTANT_String);
+  __ brx(Assembler::equal, true, Assembler::pt, isString);
+  __ delayed()->cmp(O2, JVM_CONSTANT_Object);
   __ brx(Assembler::notEqual, true, Assembler::pt, notString);
   __ delayed()->ldf(FloatRegisterImpl::S, O0, O1, Ftos_f);
+  __ bind(isString);
   __ ld_ptr(O0, O1, Otos_i);
   __ verify_oop(Otos_i);
   __ push(atos);
--- a/src/cpu/x86/vm/assembler_x86.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -3804,6 +3804,14 @@
   emit_arith(0x03, 0xC0, dst, src);
 }
 
+void Assembler::andq(Address dst, int32_t imm32) {
+  InstructionMark im(this);
+  prefixq(dst);
+  emit_byte(0x81);
+  emit_operand(rsp, dst, 4);
+  emit_long(imm32);
+}
+
 void Assembler::andq(Register dst, int32_t imm32) {
   (void) prefixq_and_encode(dst->encoding());
   emit_arith(0x81, 0xE0, dst, imm32);
--- a/src/cpu/x86/vm/assembler_x86.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/assembler_x86.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -779,6 +779,7 @@
   void andl(Register dst, Address src);
   void andl(Register dst, Register src);
 
+  void andq(Address  dst, int32_t imm32);
   void andq(Register dst, int32_t imm32);
   void andq(Register dst, Address src);
   void andq(Register dst, Register src);
--- a/src/cpu/x86/vm/icache_x86.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/icache_x86.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -43,8 +43,8 @@
 #ifdef AMD64
   enum {
     stub_size      = 64, // Size of the icache flush stub in bytes
-    line_size      = 32, // Icache line size in bytes
-    log2_line_size = 5   // log2(line_size)
+    line_size      = 64, // Icache line size in bytes
+    log2_line_size = 6   // log2(line_size)
   };
 
   // Use default implementation
--- a/src/cpu/x86/vm/methodHandles_x86.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/methodHandles_x86.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -602,15 +602,8 @@
 
   // error path for invokeExact (only)
   __ bind(invoke_exact_error_path);
-  // jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
-  Register rdx_last_Java_sp = rdx_temp;
-  __ lea(rdx_last_Java_sp, __ argument_address(constant(0)));
-  __ super_call_VM(noreg,
-                   rdx_last_Java_sp,
-                   CAST_FROM_FN_PTR(address,
-                                    InterpreterRuntime::throw_WrongMethodTypeException),
-                   // pass required type, then failing mh object
-                   rax_mtype, rcx_recv);
+  // Stub wants expected type in rax and the actual type in rcx
+  __ jump(ExternalAddress(StubRoutines::throw_WrongMethodTypeException_entry()));
 
   // for invokeGeneric (only), apply argument and result conversions on the fly
   __ bind(invoke_generic_slow_path);
@@ -1175,27 +1168,15 @@
       __ mov(rsp, saved_last_sp);  // cut the stack back to where the caller started
 
       Register rbx_method = rbx_temp;
-      Label L_no_method;
-      // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method
       __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method));
-      __ testptr(rbx_method, rbx_method);
-      __ jccb(Assembler::zero, L_no_method);
 
       const int jobject_oop_offset = 0;
       __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset));  // dereference the jobject
-      __ testptr(rbx_method, rbx_method);
-      __ jccb(Assembler::zero, L_no_method);
       __ verify_oop(rbx_method);
 
       NOT_LP64(__ push(rarg2_required));
       __ push(rdi_pc);         // restore caller PC
       __ jmp(rbx_method_fce);  // jump to compiled entry
-
-      // Do something that is at least causes a valid throw from the interpreter.
-      __ bind(L_no_method);
-      __ push(rarg2_required);
-      __ push(rarg1_actual);
-      __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
     }
     break;
 
--- a/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2151,6 +2151,8 @@
   // if they expect all registers to be preserved.
   enum layout {
     thread_off,    // last_java_sp
+    arg1_off,
+    arg2_off,
     rbp_off,       // callee saved register
     ret_pc,
     framesize
@@ -2185,7 +2187,7 @@
   // either at call sites or otherwise assume that stack unwinding will be initiated,
   // so caller saved registers were assumed volatile in the compiler.
   address generate_throw_exception(const char* name, address runtime_entry,
-                                   bool restore_saved_exception_pc) {
+                                   bool restore_saved_exception_pc, Register arg1 = noreg, Register arg2 = noreg) {
 
     int insts_size = 256;
     int locs_size  = 32;
@@ -2218,6 +2220,13 @@
 
     // push java thread (becomes first argument of C function)
     __ movptr(Address(rsp, thread_off * wordSize), java_thread);
+    if (arg1 != noreg) {
+      __ movptr(Address(rsp, arg1_off * wordSize), arg1);
+    }
+    if (arg2 != noreg) {
+      assert(arg1 != noreg, "missing reg arg");
+      __ movptr(Address(rsp, arg2_off * wordSize), arg2);
+    }
 
     // Set up last_Java_sp and last_Java_fp
     __ set_last_Java_frame(java_thread, rsp, rbp, NULL);
@@ -2309,6 +2318,12 @@
                                                                                    CAST_FROM_FN_PTR(address, SharedRuntime::d2i));
     StubRoutines::_d2l_wrapper                              = generate_d2i_wrapper(T_LONG,
                                                                                    CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
+
+    // Build this early so it's available for the interpreter
+    StubRoutines::_throw_WrongMethodTypeException_entry =
+      generate_throw_exception("WrongMethodTypeException throw_exception",
+                               CAST_FROM_FN_PTR(address, SharedRuntime::throw_WrongMethodTypeException),
+                               false, rax, rcx);
   }
 
 
--- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2934,7 +2934,9 @@
   // caller saved registers were assumed volatile in the compiler.
   address generate_throw_exception(const char* name,
                                    address runtime_entry,
-                                   bool restore_saved_exception_pc) {
+                                   bool restore_saved_exception_pc,
+                                   Register arg1 = noreg,
+                                   Register arg2 = noreg) {
     // Information about frame layout at time of blocking runtime call.
     // Note that we only have to preserve callee-saved registers since
     // the compilers are responsible for supplying a continuation point
@@ -2980,6 +2982,13 @@
     __ set_last_Java_frame(rsp, rbp, NULL);
 
     // Call runtime
+    if (arg1 != noreg) {
+      assert(arg2 != c_rarg1, "clobbered");
+      __ movptr(c_rarg1, arg1);
+    }
+    if (arg2 != noreg) {
+      __ movptr(c_rarg2, arg2);
+    }
     __ movptr(c_rarg0, r15_thread);
     BLOCK_COMMENT("call runtime_entry");
     __ call(RuntimeAddress(runtime_entry));
@@ -3052,6 +3061,14 @@
     StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp();
 
     StubRoutines::x86::_verify_mxcsr_entry    = generate_verify_mxcsr();
+
+    // Build this early so it's available for the interpreter.  Stub
+    // expects the required and actual types as register arguments in
+    // j_rarg0 and j_rarg1 respectively.
+    StubRoutines::_throw_WrongMethodTypeException_entry =
+      generate_throw_exception("WrongMethodTypeException throw_exception",
+                               CAST_FROM_FN_PTR(address, SharedRuntime::throw_WrongMethodTypeException),
+                               false, rax, rcx);
   }
 
   void generate_all() {
--- a/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -112,32 +112,6 @@
   return entry;
 }
 
-// Arguments are: required type at TOS+4, failing object (or NULL) at TOS.
-address TemplateInterpreterGenerator::generate_WrongMethodType_handler() {
-  address entry = __ pc();
-
-  __ pop(rbx);                  // actual failing object is at TOS
-  __ pop(rax);                  // required type is at TOS+4
-
-  __ verify_oop(rbx);
-  __ verify_oop(rax);
-
-  // Various method handle types use interpreter registers as temps.
-  __ restore_bcp();
-  __ restore_locals();
-
-  // Expression stack must be empty before entering the VM for an exception.
-  __ empty_expression_stack();
-  __ empty_FPU_stack();
-  __ call_VM(noreg,
-             CAST_FROM_FN_PTR(address,
-                              InterpreterRuntime::throw_WrongMethodTypeException),
-             // pass required type, failing object (or NULL)
-             rax, rbx);
-  return entry;
-}
-
-
 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
   assert(!pass_oop || message == NULL, "either oop or message but not both");
   address entry = __ pc();
--- a/src/cpu/x86/vm/templateInterpreter_x86_64.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/templateInterpreter_x86_64.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -120,31 +120,6 @@
   return entry;
 }
 
-// Arguments are: required type at TOS+8, failing object (or NULL) at TOS+4.
-address TemplateInterpreterGenerator::generate_WrongMethodType_handler() {
-  address entry = __ pc();
-
-  __ pop(c_rarg2);              // failing object is at TOS
-  __ pop(c_rarg1);              // required type is at TOS+8
-
-  __ verify_oop(c_rarg1);
-  __ verify_oop(c_rarg2);
-
-  // Various method handle types use interpreter registers as temps.
-  __ restore_bcp();
-  __ restore_locals();
-
-  // Expression stack must be empty before entering the VM for an exception.
-  __ empty_expression_stack();
-
-  __ call_VM(noreg,
-             CAST_FROM_FN_PTR(address,
-                              InterpreterRuntime::throw_WrongMethodTypeException),
-             // pass required type, failing object (or NULL)
-             c_rarg1, c_rarg2);
-  return entry;
-}
-
 address TemplateInterpreterGenerator::generate_exception_handler_common(
         const char* name, const char* message, bool pass_oop) {
   assert(!pass_oop || message == NULL, "either oop or message but not both");
--- a/src/cpu/x86/vm/templateTable_x86_32.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/templateTable_x86_32.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -373,15 +373,17 @@
     __ jcc(Assembler::equal, L);
     __ cmpl(rdx, JVM_CONSTANT_String);
     __ jcc(Assembler::equal, L);
+    __ cmpl(rdx, JVM_CONSTANT_Object);
+    __ jcc(Assembler::equal, L);
     __ stop("unexpected tag type in ldc");
     __ bind(L);
   }
 #endif
   Label isOop;
   // atos and itos
-  // String is only oop type we will see here
-  __ cmpl(rdx, JVM_CONSTANT_String);
-  __ jccb(Assembler::equal, isOop);
+  // Integer is only non-oop type we will see here
+  __ cmpl(rdx, JVM_CONSTANT_Integer);
+  __ jccb(Assembler::notEqual, isOop);
   __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset));
   __ push(itos);
   __ jmp(Done);
--- a/src/cpu/x86/vm/templateTable_x86_64.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/templateTable_x86_64.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -385,6 +385,8 @@
     __ jcc(Assembler::equal, L);
     __ cmpl(rdx, JVM_CONSTANT_String);
     __ jcc(Assembler::equal, L);
+    __ cmpl(rdx, JVM_CONSTANT_Object);
+    __ jcc(Assembler::equal, L);
     __ stop("unexpected tag type in ldc");
     __ bind(L);
   }
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -321,6 +321,20 @@
   if (UseSSE < 2) UseSSE = 2;
 #endif
 
+#ifdef AMD64
+  // flush_icache_stub have to be generated first.
+  // That is why Icache line size is hard coded in ICache class,
+  // see icache_x86.hpp. It is also the reason why we can't use
+  // clflush instruction in 32-bit VM since it could be running
+  // on CPU which does not support it.
+  //
+  // The only thing we can do is to verify that flushed
+  // ICache::line_size has correct value.
+  guarantee(_cpuid_info.std_cpuid1_edx.bits.clflush != 0, "clflush is not supported");
+  // clflush_size is size in quadwords (8 bytes).
+  guarantee(_cpuid_info.std_cpuid1_ebx.bits.clflush_size == 8, "such clflush size is not supported");
+#endif
+
   // If the OS doesn't support SSE, we can't use this feature even if the HW does
   if (!os::supports_sse())
     _cpuFeatures &= ~(CPU_SSE|CPU_SSE2|CPU_SSE3|CPU_SSSE3|CPU_SSE4A|CPU_SSE4_1|CPU_SSE4_2);
--- a/src/cpu/x86/vm/vm_version_x86.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/vm_version_x86.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -91,7 +91,9 @@
                cmpxchg8 : 1,
                         : 6,
                cmov     : 1,
-                        : 7,
+                        : 3,
+               clflush  : 1,
+                        : 3,
                mmx      : 1,
                fxsr     : 1,
                sse      : 1,
--- a/src/cpu/x86/vm/x86_64.ad	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/x86/vm/x86_64.ad	Thu Jul 07 10:51:07 2011 -0700
@@ -830,6 +830,17 @@
   }
 }
 
+// This could be in MacroAssembler but it's fairly C2 specific
+void emit_cmpfp_fixup(MacroAssembler& _masm) {
+  Label exit;
+  __ jccb(Assembler::noParity, exit);
+  __ pushf();
+  __ andq(Address(rsp, 0), 0xffffff2b);
+  __ popf();
+  __ bind(exit);
+  __ nop(); // (target for branch to avoid branch to branch)
+}
+
 
 //=============================================================================
 const bool Matcher::constant_table_absolute_addressing = true;
@@ -2173,27 +2184,9 @@
     emit_rm(cbuf, 0x3, $dst$$reg & 7, $src$$reg & 7);
   %}
 
-  enc_class cmpfp_fixup()
-  %{
-    // jnp,s exit
-    emit_opcode(cbuf, 0x7B);
-    emit_d8(cbuf, 0x0A);
-
-    // pushfq
-    emit_opcode(cbuf, 0x9C);
-
-    // andq $0xffffff2b, (%rsp)
-    emit_opcode(cbuf, Assembler::REX_W);
-    emit_opcode(cbuf, 0x81);
-    emit_opcode(cbuf, 0x24);
-    emit_opcode(cbuf, 0x24);
-    emit_d32(cbuf, 0xffffff2b);
-
-    // popfq
-    emit_opcode(cbuf, 0x9D);
-
-    // nop (target for branch to avoid branch to branch)
-    emit_opcode(cbuf, 0x90);
+  enc_class cmpfp_fixup() %{
+      MacroAssembler _masm(&cbuf);
+      emit_cmpfp_fixup(_masm);
   %}
 
   enc_class cmpfp3(rRegI dst)
@@ -10253,14 +10246,8 @@
             "popfq\n"
     "exit:   nop\t# avoid branch to branch" %}
   ins_encode %{
-    Label L_exit;
     __ ucomiss($src$$XMMRegister, $constantaddress($con));
-    __ jcc(Assembler::noParity, L_exit);
-    __ pushf();
-    __ andq(rsp, 0xffffff2b);
-    __ popf();
-    __ bind(L_exit);
-    __ nop();
+    emit_cmpfp_fixup(_masm);
   %}
   ins_pipe(pipe_slow);
 %}
@@ -10341,14 +10328,8 @@
             "popfq\n"
     "exit:   nop\t# avoid branch to branch" %}
   ins_encode %{
-    Label L_exit;
     __ ucomisd($src$$XMMRegister, $constantaddress($con));
-    __ jcc(Assembler::noParity, L_exit);
-    __ pushf();
-    __ andq(rsp, 0xffffff2b);
-    __ popf();
-    __ bind(L_exit);
-    __ nop();
+    emit_cmpfp_fixup(_masm);
   %}
   ins_pipe(pipe_slow);
 %}
--- a/src/cpu/zero/vm/cppInterpreter_zero.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/cpu/zero/vm/cppInterpreter_zero.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -657,7 +657,7 @@
   if (!is_exact) {
     if (method->intrinsic_id() == vmIntrinsics::_invokeExact) {
       CALL_VM_NOCHECK_NOFIX(
-        InterpreterRuntime::throw_WrongMethodTypeException(
+        SharedRuntime::throw_WrongMethodTypeException(
           thread, method_type, mhtype));
       // NB all oops trashed!
       assert(HAS_PENDING_EXCEPTION, "should do");
@@ -673,7 +673,7 @@
     oop adapter = java_lang_invoke_MethodTypeForm::genericInvoker(form);
     if (adapter == NULL) {
       CALL_VM_NOCHECK_NOFIX(
-        InterpreterRuntime::throw_WrongMethodTypeException(
+        SharedRuntime::throw_WrongMethodTypeException(
           thread, method_type, mhtype));
       // NB all oops trashed!
       assert(HAS_PENDING_EXCEPTION, "should do");
--- a/src/share/tools/hsdis/README	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/tools/hsdis/README	Thu Jul 07 10:51:07 2011 -0700
@@ -75,8 +75,16 @@
 * Installing
 
 Products are named like build/$OS-$LIBARCH/hsdis-$LIBARCH.so.  You can
-install them on your LD_LIBRARY_PATH, or inside of your JRE next to
-$LIBARCH/libjvm.so.
+install them on your LD_LIBRARY_PATH, or inside of your JRE/JDK.  The
+search path in the JVM is:
+
+1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so
+2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
+3. <home>/jre/lib/<arch>/hsdis-<arch>.so
+4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
+
+Note that there's a bug in hotspot versions prior to hs22 that causes
+steps 2 and 3 to fail when used with JDK7.
 
 Now test:
 
--- a/src/share/vm/adlc/adlparse.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/adlc/adlparse.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2812,6 +2812,13 @@
     params->add_entry(param);
   }
 
+  // Check for duplicate ins_encode sections after parsing the block
+  // so that parsing can continue and find any other errors.
+  if (inst._insencode != NULL) {
+    parse_err(SYNERR, "Multiple ins_encode sections defined\n");
+    return;
+  }
+
   // Set encode class of this instruction.
   inst._insencode = encrule;
 }
@@ -3044,6 +3051,13 @@
   next_char();                     // move past ';'
   skipws();                        // be friendly to oper_parse()
 
+  // Check for duplicate ins_encode sections after parsing the block
+  // so that parsing can continue and find any other errors.
+  if (inst._insencode != NULL) {
+    parse_err(SYNERR, "Multiple ins_encode sections defined\n");
+    return;
+  }
+
   // Debug Stuff
   if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name);
 
--- a/src/share/vm/c1/c1_GraphBuilder.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/c1/c1_GraphBuilder.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -33,6 +33,7 @@
 #include "compiler/compileBroker.hpp"
 #include "interpreter/bytecode.hpp"
 #include "runtime/sharedRuntime.hpp"
+#include "runtime/compilationPolicy.hpp"
 #include "utilities/bitMap.inline.hpp"
 
 class BlockListBuilder VALUE_OBJ_CLASS_SPEC {
@@ -3395,8 +3396,8 @@
 
 bool GraphBuilder::try_inline_full(ciMethod* callee, bool holder_known) {
   assert(!callee->is_native(), "callee must not be native");
-  if (count_backedges() && callee->has_loops()) {
-    INLINE_BAILOUT("too complex for tiered");
+  if (CompilationPolicy::policy()->should_not_inline(compilation()->env(), callee)) {
+    INLINE_BAILOUT("inlining prohibited by policy");
   }
   // first perform tests of things it's not possible to inline
   if (callee->has_exception_handlers() &&
--- a/src/share/vm/c1/c1_Optimizer.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/c1/c1_Optimizer.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -642,7 +642,7 @@
 void NullCheckVisitor::do_NewTypeArray   (NewTypeArray*    x) { nce()->handle_NewArray(x); }
 void NullCheckVisitor::do_NewObjectArray (NewObjectArray*  x) { nce()->handle_NewArray(x); }
 void NullCheckVisitor::do_NewMultiArray  (NewMultiArray*   x) { nce()->handle_NewArray(x); }
-void NullCheckVisitor::do_CheckCast      (CheckCast*       x) {}
+void NullCheckVisitor::do_CheckCast      (CheckCast*       x) { nce()->clear_last_explicit_null_check(); }
 void NullCheckVisitor::do_InstanceOf     (InstanceOf*      x) {}
 void NullCheckVisitor::do_MonitorEnter   (MonitorEnter*    x) { nce()->handle_AccessMonitor(x); }
 void NullCheckVisitor::do_MonitorExit    (MonitorExit*     x) { nce()->handle_AccessMonitor(x); }
--- a/src/share/vm/c1/c1_Runtime1.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/c1/c1_Runtime1.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -383,8 +383,10 @@
   }
 JRT_END
 
-// This is a helper to allow us to safepoint but allow the outer entry
-// to be safepoint free if we need to do an osr
+// counter_overflow() is called from within C1-compiled methods. The enclosing method is the method
+// associated with the top activation record. The inlinee (that is possibly included in the enclosing
+// method) method oop is passed as an argument. In order to do that it is embedded in the code as
+// a constant.
 static nmethod* counter_overflow_helper(JavaThread* THREAD, int branch_bci, methodOopDesc* m) {
   nmethod* osr_nm = NULL;
   methodHandle method(THREAD, m);
@@ -420,7 +422,7 @@
     bci = branch_bci + offset;
   }
 
-  osr_nm = CompilationPolicy::policy()->event(enclosing_method, method, branch_bci, bci, level, THREAD);
+  osr_nm = CompilationPolicy::policy()->event(enclosing_method, method, branch_bci, bci, level, nm, THREAD);
   return osr_nm;
 }
 
--- a/src/share/vm/ci/ciEnv.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciEnv.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -50,6 +50,7 @@
 #include "oops/oop.inline.hpp"
 #include "oops/oop.inline2.hpp"
 #include "prims/jvmtiExport.hpp"
+#include "prims/methodHandleWalk.hpp"
 #include "runtime/init.hpp"
 #include "runtime/reflection.hpp"
 #include "runtime/sharedRuntime.hpp"
@@ -371,6 +372,7 @@
 // ------------------------------------------------------------------
 // ciEnv::get_klass_by_name_impl
 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
+                                       constantPoolHandle cpool,
                                        ciSymbol* name,
                                        bool require_local) {
   ASSERT_IN_VM;
@@ -386,7 +388,7 @@
                     sym->utf8_length()-2,
                     KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
     ciSymbol* strippedname = get_symbol(strippedsym);
-    return get_klass_by_name_impl(accessing_klass, strippedname, require_local);
+    return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
   }
 
   // Check for prior unloaded klass.  The SystemDictionary's answers
@@ -443,6 +445,7 @@
     // Get element ciKlass recursively.
     ciKlass* elem_klass =
       get_klass_by_name_impl(accessing_klass,
+                             cpool,
                              get_symbol(elem_sym),
                              require_local);
     if (elem_klass != NULL && elem_klass->is_loaded()) {
@@ -451,6 +454,19 @@
     }
   }
 
+  if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
+    // Look inside the constant pool for pre-resolved class entries.
+    for (int i = cpool->length() - 1; i >= 1; i--) {
+      if (cpool->tag_at(i).is_klass()) {
+        klassOop kls = cpool->resolved_klass_at(i);
+        if (Klass::cast(kls)->name() == sym) {
+          found_klass = KlassHandle(THREAD, kls);
+          break;
+        }
+      }
+    }
+  }
+
   if (found_klass() != NULL) {
     // Found it.  Build a CI handle.
     return get_object(found_klass())->as_klass();
@@ -468,6 +484,7 @@
                                   ciSymbol* klass_name,
                                   bool require_local) {
   GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
+                                                 constantPoolHandle(),
                                                  klass_name,
                                                  require_local);)
 }
@@ -508,13 +525,14 @@
   if (klass.is_null()) {
     // Not found in constant pool.  Use the name to do the lookup.
     ciKlass* k = get_klass_by_name_impl(accessor,
+                                        cpool,
                                         get_symbol(klass_name),
                                         false);
     // Calculate accessibility the hard way.
     if (!k->is_loaded()) {
       is_accessible = false;
     } else if (k->loader() != accessor->loader() &&
-               get_klass_by_name_impl(accessor, k->name(), true) == NULL) {
+               get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
       // Loaded only remotely.  Not linked yet.
       is_accessible = false;
     } else {
@@ -565,7 +583,7 @@
     index = cpc_entry->constant_pool_index();
     oop obj = cpc_entry->f1();
     if (obj != NULL) {
-      assert(obj->is_instance(), "must be an instance");
+      assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
       ciObject* ciobj = get_object(obj);
       return ciConstant(T_OBJECT, ciobj);
     }
@@ -607,7 +625,7 @@
     return ciConstant(T_OBJECT, klass->java_mirror());
   } else if (tag.is_object()) {
     oop obj = cpool->object_at(index);
-    assert(obj->is_instance(), "must be an instance");
+    assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
     ciObject* ciobj = get_object(obj);
     return ciConstant(T_OBJECT, ciobj);
   } else if (tag.is_method_type()) {
@@ -729,9 +747,35 @@
   Symbol* name_sym = cpool->name_ref_at(index);
   Symbol* sig_sym  = cpool->signature_ref_at(index);
 
+  if (cpool->has_preresolution()
+      || (holder == ciEnv::MethodHandle_klass() &&
+          methodOopDesc::is_method_handle_invoke_name(name_sym))) {
+    // Short-circuit lookups for JSR 292-related call sites.
+    // That is, do not rely only on name-based lookups, because they may fail
+    // if the names are not resolvable in the boot class loader (7056328).
+    switch (bc) {
+    case Bytecodes::_invokevirtual:
+    case Bytecodes::_invokeinterface:
+    case Bytecodes::_invokespecial:
+    case Bytecodes::_invokestatic:
+      {
+        methodOop m = constantPoolOopDesc::method_at_if_loaded(cpool, index, bc);
+        if (m != NULL) {
+          return get_object(m)->as_method();
+        }
+      }
+    }
+  }
+
   if (holder_is_accessible) { // Our declared holder is loaded.
     instanceKlass* lookup = declared_holder->get_instanceKlass();
     methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
+    if (m != NULL &&
+        (bc == Bytecodes::_invokestatic
+         ?  instanceKlass::cast(m->method_holder())->is_not_initialized()
+         : !instanceKlass::cast(m->method_holder())->is_loaded())) {
+      m = NULL;
+    }
     if (m != NULL) {
       // We found the method.
       return get_object(m)->as_method();
@@ -1046,7 +1090,7 @@
 // ciEnv::find_system_klass
 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
   VM_ENTRY_MARK;
-  return get_klass_by_name_impl(NULL, klass_name, false);
+  return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
 }
 
 // ------------------------------------------------------------------
--- a/src/share/vm/ci/ciEnv.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciEnv.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -137,6 +137,7 @@
 
   // Implementation methods for loading and constant pool access.
   ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass,
+                                  constantPoolHandle cpool,
                                   ciSymbol* klass_name,
                                   bool require_local);
   ciKlass*   get_klass_by_index_impl(constantPoolHandle cpool,
--- a/src/share/vm/ci/ciField.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciField.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -287,7 +287,7 @@
 }
 
 ciType* ciField::compute_type_impl() {
-  ciKlass* type = CURRENT_ENV->get_klass_by_name_impl(_holder, _signature, false);
+  ciKlass* type = CURRENT_ENV->get_klass_by_name_impl(_holder, constantPoolHandle(), _signature, false);
   if (!type->is_primitive_type() && is_shared()) {
     // We must not cache a pointer to an unshared type, in a shared field.
     bool type_is_also_shared = false;
--- a/src/share/vm/ci/ciMethod.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciMethod.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -125,7 +125,8 @@
   _name = env->get_symbol(h_m()->name());
   _holder = env->get_object(h_m()->method_holder())->as_instance_klass();
   ciSymbol* sig_symbol = env->get_symbol(h_m()->signature());
-  _signature = new (env->arena()) ciSignature(_holder, sig_symbol);
+  constantPoolHandle cpool = h_m()->constants();
+  _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
   _method_data = NULL;
   // Take a snapshot of these values, so they will be commensurate with the MDO.
   if (ProfileInterpreter || TieredCompilation) {
@@ -152,7 +153,7 @@
   // These fields are always filled in.
   _name = name;
   _holder = holder;
-  _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature);
+  _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, constantPoolHandle(), signature);
   _intrinsic_id = vmIntrinsics::_none;
   _liveness = NULL;
   _can_be_statically_bound = false;
@@ -1009,6 +1010,12 @@
   return 0;
 }
 
+int ciMethod::highest_osr_comp_level() {
+  check_is_loaded();
+  VM_ENTRY_MARK;
+  return get_methodOop()->highest_osr_comp_level();
+}
+
 // ------------------------------------------------------------------
 // ciMethod::instructions_size
 //
--- a/src/share/vm/ci/ciMethod.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciMethod.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -158,6 +158,7 @@
   int interpreter_throwout_count() const         { check_is_loaded(); return _interpreter_throwout_count; }
 
   int comp_level();
+  int highest_osr_comp_level();
 
   Bytecodes::Code java_code_at_bci(int bci) {
     address bcp = code() + bci;
--- a/src/share/vm/ci/ciMethodHandle.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciMethodHandle.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -41,6 +41,16 @@
   VM_ENTRY_MARK;
   Handle h(get_oop());
   methodHandle callee(_callee->get_methodOop());
+  assert(callee->is_method_handle_invoke(), "");
+  oop mt1 = callee->method_handle_type();
+  oop mt2 = java_lang_invoke_MethodHandle::type(h());
+  if (!java_lang_invoke_MethodType::equals(mt1, mt2)) {
+    if (PrintMiscellaneous && (Verbose || WizardMode)) {
+      tty->print_cr("ciMethodHandle::get_adapter: types not equal");
+      mt1->print(); mt2->print();
+    }
+    return NULL;
+  }
   // We catch all exceptions here that could happen in the method
   // handle compiler and stop the VM.
   MethodHandleCompiler mhc(h, callee->name(), callee->signature(), _profile.count(), is_invokedynamic, THREAD);
@@ -53,7 +63,7 @@
   if (PrintMiscellaneous && (Verbose || WizardMode)) {
     tty->print("*** ciMethodHandle::get_adapter => ");
     PENDING_EXCEPTION->print();
-    tty->print("*** get_adapter (%s): ", is_invokedynamic ? "indy" : "mh"); ((ciObject*)this)->print(); //@@
+    tty->print("*** get_adapter (%s): ", is_invokedynamic ? "indy" : "mh"); ((ciObject*)this)->print();
   }
   CLEAR_PENDING_EXCEPTION;
   return NULL;
--- a/src/share/vm/ci/ciObjArrayKlass.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciObjArrayKlass.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -93,6 +93,7 @@
       // element klass by name.
       _element_klass = CURRENT_THREAD_ENV->get_klass_by_name_impl(
                           this,
+                          constantPoolHandle(),
                           construct_array_name(base_element_klass()->name(),
                                                dimension() - 1),
                           false);
--- a/src/share/vm/ci/ciSignature.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciSignature.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -35,7 +35,7 @@
 
 // ------------------------------------------------------------------
 // ciSignature::ciSignature
-ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol) {
+ciSignature::ciSignature(ciKlass* accessing_klass, constantPoolHandle cpool, ciSymbol* symbol) {
   ASSERT_IN_VM;
   EXCEPTION_CONTEXT;
   _accessing_klass = accessing_klass;
@@ -64,7 +64,7 @@
         CLEAR_PENDING_EXCEPTION;
       } else {
         ciSymbol* klass_name = env->get_symbol(name);
-        type = env->get_klass_by_name_impl(_accessing_klass, klass_name, false);
+        type = env->get_klass_by_name_impl(_accessing_klass, cpool, klass_name, false);
       }
     }
     _types->append(type);
--- a/src/share/vm/ci/ciSignature.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/ci/ciSignature.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -44,7 +44,7 @@
 
   friend class ciMethod;
 
-  ciSignature(ciKlass* accessing_klass, ciSymbol* signature);
+  ciSignature(ciKlass* accessing_klass, constantPoolHandle cpool, ciSymbol* signature);
 
   void get_all_klasses();
 
--- a/src/share/vm/classfile/classFileParser.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/classfile/classFileParser.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -3287,9 +3287,9 @@
       // Fields allocation: oops fields in super and sub classes are together.
       if( nonstatic_field_size > 0 && super_klass() != NULL &&
           super_klass->nonstatic_oop_map_size() > 0 ) {
-        int map_size = super_klass->nonstatic_oop_map_size();
+        int map_count = super_klass->nonstatic_oop_map_count();
         OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps();
-        OopMapBlock* last_map = first_map + map_size - 1;
+        OopMapBlock* last_map = first_map + map_count - 1;
         int next_offset = last_map->offset() + (last_map->count() * heapOopSize);
         if (next_offset == next_nonstatic_field_offset) {
           allocation_style = 0;   // allocate oops first
--- a/src/share/vm/classfile/javaClasses.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/classfile/javaClasses.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2547,6 +2547,18 @@
   return name;
 }
 
+bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
+  if (rtype(mt1) != rtype(mt2))
+    return false;
+  if (ptype_count(mt1) != ptype_count(mt2))
+    return false;
+  for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
+    if (ptype(mt1, i) != ptype(mt2, i))
+      return false;
+  }
+  return true;
+}
+
 oop java_lang_invoke_MethodType::rtype(oop mt) {
   assert(is_instance(mt), "must be a MethodType");
   return mt->obj_field(_rtype_offset);
--- a/src/share/vm/classfile/javaClasses.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/classfile/javaClasses.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -1079,6 +1079,8 @@
     return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
   }
 
+  static bool equals(oop mt1, oop mt2);
+
   // Accessors for code generation:
   static int rtype_offset_in_bytes()            { return _rtype_offset; }
   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
--- a/src/share/vm/classfile/systemDictionary.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/classfile/systemDictionary.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2367,6 +2367,8 @@
         // Link m to his method type, if it is suitably generic.
         oop mtform = java_lang_invoke_MethodType::form(mt());
         if (mtform != NULL && mt() == java_lang_invoke_MethodTypeForm::erasedType(mtform)
+            // vmlayout must be an invokeExact:
+            && name_id == vmSymbols::VM_SYMBOL_ENUM_NAME(invokeExact_name)
             && java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() > 0) {
           java_lang_invoke_MethodTypeForm::init_vmlayout(mtform, m());
         }
--- a/src/share/vm/code/nmethod.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/code/nmethod.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -1832,7 +1832,9 @@
   if (!method()->is_native()) {
     SimpleScopeDesc ssd(this, fr.pc());
     Bytecode_invoke call(ssd.method(), ssd.bci());
-    bool has_receiver = call.has_receiver();
+    // compiled invokedynamic call sites have an implicit receiver at
+    // resolution time, so make sure it gets GC'ed.
+    bool has_receiver = !call.is_invokestatic();
     Symbol* signature = call.signature();
     fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f);
   }
--- a/src/share/vm/compiler/disassembler.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/compiler/disassembler.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -78,21 +78,46 @@
   char buf[JVM_MAXPATHLEN];
   os::jvm_path(buf, sizeof(buf));
   int jvm_offset = -1;
+  int lib_offset = -1;
   {
     // Match "jvm[^/]*" in jvm_path.
     const char* base = buf;
     const char* p = strrchr(buf, '/');
+    if (p != NULL) lib_offset = p - base + 1;
     p = strstr(p ? p : base, "jvm");
     if (p != NULL)  jvm_offset = p - base;
   }
+  // Find the disassembler shared library.
+  // Search for several paths derived from libjvm, in this order:
+  // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so  (for compatibility)
+  // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
+  // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
+  // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
   if (jvm_offset >= 0) {
-    // Find the disassembler next to libjvm.so.
+    // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so
     strcpy(&buf[jvm_offset], hsdis_library_name);
     strcat(&buf[jvm_offset], os::dll_file_extension());
     _library = os::dll_load(buf, ebuf, sizeof ebuf);
+    if (_library == NULL) {
+      // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
+      strcpy(&buf[lib_offset], hsdis_library_name);
+      strcat(&buf[lib_offset], os::dll_file_extension());
+      _library = os::dll_load(buf, ebuf, sizeof ebuf);
+    }
+    if (_library == NULL) {
+      // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
+      buf[lib_offset - 1] = '\0';
+      const char* p = strrchr(buf, '/');
+      if (p != NULL) {
+        lib_offset = p - buf + 1;
+        strcpy(&buf[lib_offset], hsdis_library_name);
+        strcat(&buf[lib_offset], os::dll_file_extension());
+        _library = os::dll_load(buf, ebuf, sizeof ebuf);
+      }
+    }
   }
   if (_library == NULL) {
-    // Try a free-floating lookup.
+    // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
     strcpy(&buf[0], hsdis_library_name);
     strcat(&buf[0], os::dll_file_extension());
     _library = os::dll_load(buf, ebuf, sizeof ebuf);
@@ -249,7 +274,13 @@
       return arg;
     }
   } else if (match(event, "mach")) {
-   output()->print_cr("[Disassembling for mach='%s']", arg);
+    static char buffer[32] = { 0, };
+    if (strcmp(buffer, (const char*)arg) != 0 ||
+        strlen((const char*)arg) > sizeof(buffer) - 1) {
+      // Only print this when the mach changes
+      strncpy(buffer, (const char*)arg, sizeof(buffer) - 1);
+      output()->print_cr("[Disassembling for mach='%s']", arg);
+    }
   } else if (match(event, "format bytes-per-line")) {
     _bytes_per_line = (int) (intptr_t) arg;
   } else {
--- a/src/share/vm/interpreter/interpreterRuntime.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/interpreter/interpreterRuntime.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -362,25 +362,6 @@
   THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
 IRT_END
 
-// required can be either a MethodType, or a Class (for a single argument)
-// actual (if not null) can be either a MethodHandle, or an arbitrary value (for a single argument)
-IRT_ENTRY(void, InterpreterRuntime::throw_WrongMethodTypeException(JavaThread* thread,
-                                                                   oopDesc* required,
-                                                                   oopDesc* actual)) {
-  ResourceMark rm(thread);
-  char* message = SharedRuntime::generate_wrong_method_type_message(thread, required, actual);
-
-  if (ProfileTraps) {
-    note_trap(thread, Deoptimization::Reason_constraint, CHECK);
-  }
-
-  // create exception
-  THROW_MSG(vmSymbols::java_lang_invoke_WrongMethodTypeException(), message);
-}
-IRT_END
-
-
-
 // exception_handler_for_exception(...) returns the continuation address,
 // the exception oop (via TLS) and sets the bci/bcp for the continuation.
 // The exception oop is returned to make sure it is preserved over GC (it
@@ -863,7 +844,7 @@
   const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci;
   const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci;
 
-  nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, thread);
+  nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread);
 
   if (osr_nm != NULL) {
     // We may need to do on-stack replacement which requires that no
--- a/src/share/vm/interpreter/interpreterRuntime.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/interpreter/interpreterRuntime.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -98,7 +98,6 @@
   static void    throw_StackOverflowError(JavaThread* thread);
   static void    throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);
   static void    throw_ClassCastException(JavaThread* thread, oopDesc* obj);
-  static void    throw_WrongMethodTypeException(JavaThread* thread, oopDesc* mtype = NULL, oopDesc* mhandle = NULL);
   static void    create_exception(JavaThread* thread, char* name, char* message);
   static void    create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);
   static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);
--- a/src/share/vm/interpreter/linkResolver.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/interpreter/linkResolver.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -294,6 +294,16 @@
   Symbol*  method_signature  = pool->signature_ref_at(index);
   KlassHandle  current_klass(THREAD, pool->pool_holder());
 
+  if (pool->has_preresolution()
+      || (resolved_klass() == SystemDictionary::MethodHandle_klass() &&
+          methodOopDesc::is_method_handle_invoke_name(method_name))) {
+    methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index);
+    if (result_oop != NULL) {
+      resolved_method = methodHandle(THREAD, result_oop);
+      return;
+    }
+  }
+
   resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
 }
 
--- a/src/share/vm/interpreter/templateInterpreter.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/interpreter/templateInterpreter.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -171,7 +171,6 @@
 address    TemplateInterpreter::_throw_ArrayStoreException_entry            = NULL;
 address    TemplateInterpreter::_throw_ArithmeticException_entry            = NULL;
 address    TemplateInterpreter::_throw_ClassCastException_entry             = NULL;
-address    TemplateInterpreter::_throw_WrongMethodType_entry                = NULL;
 address    TemplateInterpreter::_throw_NullPointerException_entry           = NULL;
 address    TemplateInterpreter::_throw_StackOverflowError_entry             = NULL;
 address    TemplateInterpreter::_throw_exception_entry                      = NULL;
@@ -346,7 +345,6 @@
     Interpreter::_throw_ArrayStoreException_entry            = generate_klass_exception_handler("java/lang/ArrayStoreException"                 );
     Interpreter::_throw_ArithmeticException_entry            = generate_exception_handler("java/lang/ArithmeticException"           , "/ by zero");
     Interpreter::_throw_ClassCastException_entry             = generate_ClassCastException_handler();
-    Interpreter::_throw_WrongMethodType_entry                = generate_WrongMethodType_handler();
     Interpreter::_throw_NullPointerException_entry           = generate_exception_handler("java/lang/NullPointerException"          , NULL       );
     Interpreter::_throw_StackOverflowError_entry             = generate_StackOverflowError_handler();
   }
--- a/src/share/vm/interpreter/templateInterpreterGenerator.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/interpreter/templateInterpreterGenerator.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -51,7 +51,6 @@
   }
   address generate_exception_handler_common(const char* name, const char* message, bool pass_oop);
   address generate_ClassCastException_handler();
-  address generate_WrongMethodType_handler();
   address generate_ArrayIndexOutOfBounds_handler(const char* name);
   address generate_continuation_for(TosState state);
   address generate_return_entry_for(TosState state, int step);
--- a/src/share/vm/oops/constantPoolKlass.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/constantPoolKlass.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -310,10 +310,14 @@
     st->print(" - flags: 0x%x", cp->flags());
     if (cp->has_pseudo_string()) st->print(" has_pseudo_string");
     if (cp->has_invokedynamic()) st->print(" has_invokedynamic");
+    if (cp->has_preresolution()) st->print(" has_preresolution");
     st->cr();
   }
+  if (cp->pool_holder() != NULL) {
+    bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp);
+    st->print_cr(" - holder: " INTPTR_FORMAT "%s", cp->pool_holder(), (extra? " (extra)" : ""));
+  }
   st->print_cr(" - cache: " INTPTR_FORMAT, cp->cache());
-
   for (int index = 1; index < cp->length(); index++) {      // Index 0 is unused
     st->print(" - %3d : ", index);
     cp->tag_at(index).print_on(st);
@@ -414,10 +418,15 @@
   st->print("constant pool [%d]", cp->length());
   if (cp->has_pseudo_string()) st->print("/pseudo_string");
   if (cp->has_invokedynamic()) st->print("/invokedynamic");
+  if (cp->has_preresolution()) st->print("/preresolution");
   if (cp->operands() != NULL)  st->print("/operands[%d]", cp->operands()->length());
   cp->print_address_on(st);
   st->print(" for ");
   cp->pool_holder()->print_value_on(st);
+  if (cp->pool_holder() != NULL) {
+    bool extra = (instanceKlass::cast(cp->pool_holder())->constants() != cp);
+    if (extra)  st->print(" (extra)");
+  }
   if (cp->cache() != NULL) {
     st->print(" cache=" PTR_FORMAT, cp->cache());
   }
--- a/src/share/vm/oops/constantPoolOop.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/constantPoolOop.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -266,6 +266,29 @@
 }
 
 
+methodOop constantPoolOopDesc::method_at_if_loaded(constantPoolHandle cpool,
+                                                   int which, Bytecodes::Code invoke_code) {
+  assert(!constantPoolCacheOopDesc::is_secondary_index(which), "no indy instruction here");
+  if (cpool->cache() == NULL)  return false;  // nothing to load yet
+  int cache_index = which - CPCACHE_INDEX_TAG;
+  if (!(cache_index >= 0 && cache_index < cpool->cache()->length())) {
+    if (PrintMiscellaneous && (Verbose||WizardMode)) {
+      tty->print_cr("bad operand %d for %d in:", which, invoke_code); cpool->print();
+    }
+    return NULL;
+  }
+  ConstantPoolCacheEntry* e = cpool->cache()->entry_at(cache_index);
+  if (invoke_code != Bytecodes::_illegal)
+    return e->get_method_if_resolved(invoke_code, cpool);
+  Bytecodes::Code bc;
+  if ((bc = e->bytecode_1()) != (Bytecodes::Code)0)
+    return e->get_method_if_resolved(bc, cpool);
+  if ((bc = e->bytecode_2()) != (Bytecodes::Code)0)
+    return e->get_method_if_resolved(bc, cpool);
+  return NULL;
+}
+
+
 Symbol* constantPoolOopDesc::impl_name_ref_at(int which, bool uncached) {
   int name_index = name_ref_index_at(impl_name_and_type_ref_index_at(which, uncached));
   return symbol_at(name_index);
--- a/src/share/vm/oops/constantPoolOop.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/constantPoolOop.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -103,7 +103,8 @@
 
   enum FlagBit {
     FB_has_invokedynamic = 1,
-    FB_has_pseudo_string = 2
+    FB_has_pseudo_string = 2,
+    FB_has_preresolution = 3
   };
 
   int flags() const                         { return _flags; }
@@ -179,8 +180,10 @@
 
   bool has_pseudo_string() const            { return flag_at(FB_has_pseudo_string); }
   bool has_invokedynamic() const            { return flag_at(FB_has_invokedynamic); }
+  bool has_preresolution() const            { return flag_at(FB_has_preresolution); }
   void set_pseudo_string()                  {    set_flag_at(FB_has_pseudo_string); }
   void set_invokedynamic()                  {    set_flag_at(FB_has_invokedynamic); }
+  void set_preresolution()                  {    set_flag_at(FB_has_preresolution); }
 
   // Klass holding pool
   klassOop pool_holder() const              { return _pool_holder; }
@@ -663,6 +666,8 @@
   friend class SystemDictionary;
 
   // Used by compiler to prevent classloading.
+  static methodOop method_at_if_loaded        (constantPoolHandle this_oop, int which,
+                                               Bytecodes::Code bc = Bytecodes::_illegal);
   static klassOop klass_at_if_loaded          (constantPoolHandle this_oop, int which);
   static klassOop klass_ref_at_if_loaded      (constantPoolHandle this_oop, int which);
   // Same as above - but does LinkResolving.
--- a/src/share/vm/oops/cpCacheOop.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/cpCacheOop.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -295,6 +295,50 @@
 }
 
 
+methodOop ConstantPoolCacheEntry::get_method_if_resolved(Bytecodes::Code invoke_code, constantPoolHandle cpool) {
+  assert(invoke_code > (Bytecodes::Code)0, "bad query");
+  if (is_secondary_entry()) {
+    return cpool->cache()->entry_at(main_entry_index())->get_method_if_resolved(invoke_code, cpool);
+  }
+  // Decode the action of set_method and set_interface_call
+  if (bytecode_1() == invoke_code) {
+    oop f1 = _f1;
+    if (f1 != NULL) {
+      switch (invoke_code) {
+      case Bytecodes::_invokeinterface:
+        assert(f1->is_klass(), "");
+        return klassItable::method_for_itable_index(klassOop(f1), (int) f2());
+      case Bytecodes::_invokestatic:
+      case Bytecodes::_invokespecial:
+        assert(f1->is_method(), "");
+        return methodOop(f1);
+      }
+    }
+  }
+  if (bytecode_2() == invoke_code) {
+    switch (invoke_code) {
+    case Bytecodes::_invokevirtual:
+      if (is_vfinal()) {
+        // invokevirtual
+        methodOop m = methodOop((intptr_t) f2());
+        assert(m->is_method(), "");
+        return m;
+      } else {
+        int holder_index = cpool->uncached_klass_ref_index_at(constant_pool_index());
+        if (cpool->tag_at(holder_index).is_klass()) {
+          klassOop klass = cpool->resolved_klass_at(holder_index);
+          if (!Klass::cast(klass)->oop_is_instance())
+            klass = SystemDictionary::Object_klass();
+          return instanceKlass::cast(klass)->method_at_vtable((int) f2());
+        }
+      }
+    }
+  }
+  return NULL;
+}
+
+
+
 class LocalOopClosure: public OopClosure {
  private:
   void (*_f)(oop*);
--- a/src/share/vm/oops/cpCacheOop.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/cpCacheOop.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -194,6 +194,8 @@
     methodHandle signature_invoker               // determines signature information
   );
 
+  methodOop get_method_if_resolved(Bytecodes::Code invoke_code, constantPoolHandle cpool);
+
   // For JVM_CONSTANT_InvokeDynamic cache entries:
   void initialize_bootstrap_method_index_in_cache(int bsm_cache_index);
   int  bootstrap_method_index_in_cache();
--- a/src/share/vm/oops/methodOop.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/methodOop.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -929,14 +929,40 @@
   name->increment_refcount();
   signature->increment_refcount();
 
+  // record non-BCP method types in the constant pool
+  GrowableArray<KlassHandle>* extra_klasses = NULL;
+  for (int i = -1, len = java_lang_invoke_MethodType::ptype_count(method_type()); i < len; i++) {
+    oop ptype = (i == -1
+                 ? java_lang_invoke_MethodType::rtype(method_type())
+                 : java_lang_invoke_MethodType::ptype(method_type(), i));
+    klassOop klass = check_non_bcp_klass(java_lang_Class::as_klassOop(ptype));
+    if (klass != NULL) {
+      if (extra_klasses == NULL)
+        extra_klasses = new GrowableArray<KlassHandle>(len+1);
+      bool dup = false;
+      for (int j = 0; j < extra_klasses->length(); j++) {
+        if (extra_klasses->at(j) == klass) { dup = true; break; }
+      }
+      if (!dup)
+        extra_klasses->append(KlassHandle(THREAD, klass));
+    }
+  }
+
+  int extra_klass_count = (extra_klasses == NULL ? 0 : extra_klasses->length());
+  int cp_length = _imcp_limit + extra_klass_count;
   constantPoolHandle cp;
   {
-    constantPoolOop cp_oop = oopFactory::new_constantPool(_imcp_limit, IsSafeConc, CHECK_(empty));
+    constantPoolOop cp_oop = oopFactory::new_constantPool(cp_length, IsSafeConc, CHECK_(empty));
     cp = constantPoolHandle(THREAD, cp_oop);
   }
   cp->symbol_at_put(_imcp_invoke_name,       name);
   cp->symbol_at_put(_imcp_invoke_signature,  signature);
   cp->string_at_put(_imcp_method_type_value, Universe::the_null_string());
+  for (int j = 0; j < extra_klass_count; j++) {
+    KlassHandle klass = extra_klasses->at(j);
+    cp->klass_at_put(_imcp_limit + j, klass());
+  }
+  cp->set_preresolution();
   cp->set_pool_holder(holder());
 
   // set up the fancy stuff:
@@ -985,6 +1011,14 @@
   return m;
 }
 
+klassOop methodOopDesc::check_non_bcp_klass(klassOop klass) {
+  if (klass != NULL && Klass::cast(klass)->class_loader() != NULL) {
+    if (Klass::cast(klass)->oop_is_objArray())
+      klass = objArrayKlass::cast(klass)->bottom_klass();
+    return klass;
+  }
+  return NULL;
+}
 
 
 methodHandle methodOopDesc:: clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length,
--- a/src/share/vm/oops/methodOop.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/oops/methodOop.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -600,6 +600,7 @@
                                          Symbol* signature, //anything at all
                                          Handle method_type,
                                          TRAPS);
+  static klassOop check_non_bcp_klass(klassOop klass);
   // these operate only on invoke methods:
   oop method_handle_type() const;
   static jint* method_type_offsets_chain();  // series of pointer-offsets, terminated by -1
--- a/src/share/vm/opto/bytecodeInfo.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/bytecodeInfo.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -35,14 +35,16 @@
 
 //=============================================================================
 //------------------------------InlineTree-------------------------------------
-InlineTree::InlineTree( Compile* c,
-                        const InlineTree *caller_tree, ciMethod* callee,
-                        JVMState* caller_jvms, int caller_bci,
-                        float site_invoke_ratio, int site_depth_adjust)
-: C(c), _caller_jvms(caller_jvms),
-  _caller_tree((InlineTree*)caller_tree),
-  _method(callee), _site_invoke_ratio(site_invoke_ratio),
-  _site_depth_adjust(site_depth_adjust),
+InlineTree::InlineTree(Compile* c,
+                       const InlineTree *caller_tree, ciMethod* callee,
+                       JVMState* caller_jvms, int caller_bci,
+                       float site_invoke_ratio, int max_inline_level) :
+  C(c),
+  _caller_jvms(caller_jvms),
+  _caller_tree((InlineTree*) caller_tree),
+  _method(callee),
+  _site_invoke_ratio(site_invoke_ratio),
+  _max_inline_level(max_inline_level),
   _count_inline_bcs(method()->code_size())
 {
   NOT_PRODUCT(_count_inlines = 0;)
@@ -66,10 +68,13 @@
 }
 
 InlineTree::InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms,
-                       float site_invoke_ratio, int site_depth_adjust)
-: C(c), _caller_jvms(caller_jvms), _caller_tree(NULL),
-  _method(callee_method), _site_invoke_ratio(site_invoke_ratio),
-  _site_depth_adjust(site_depth_adjust),
+                       float site_invoke_ratio, int max_inline_level) :
+  C(c),
+  _caller_jvms(caller_jvms),
+  _caller_tree(NULL),
+  _method(callee_method),
+  _site_invoke_ratio(site_invoke_ratio),
+  _max_inline_level(max_inline_level),
   _count_inline_bcs(method()->code_size())
 {
   NOT_PRODUCT(_count_inlines = 0;)
@@ -94,7 +99,7 @@
   if(callee_method->should_inline()) {
     *wci_result = *(WarmCallInfo::always_hot());
     if (PrintInlining && Verbose) {
-      CompileTask::print_inline_indent(inline_depth());
+      CompileTask::print_inline_indent(inline_level());
       tty->print_cr("Inlined method is hot: ");
     }
     return NULL;
@@ -109,7 +114,7 @@
      size < InlineThrowMaxSize ) {
     wci_result->set_profit(wci_result->profit() * 100);
     if (PrintInlining && Verbose) {
-      CompileTask::print_inline_indent(inline_depth());
+      CompileTask::print_inline_indent(inline_level());
       tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count());
     }
     return NULL;
@@ -149,9 +154,9 @@
 
     max_inline_size = C->freq_inline_size();
     if (size <= max_inline_size && TraceFrequencyInlining) {
-      CompileTask::print_inline_indent(inline_depth());
+      CompileTask::print_inline_indent(inline_level());
       tty->print_cr("Inlined frequent method (freq=%d count=%d):", freq, call_site_count);
-      CompileTask::print_inline_indent(inline_depth());
+      CompileTask::print_inline_indent(inline_level());
       callee_method->print();
       tty->cr();
     }
@@ -322,7 +327,7 @@
   if (!C->do_inlining() && InlineAccessors) {
     return "not an accessor";
   }
-  if( inline_depth() > MaxInlineLevel ) {
+  if (inline_level() > _max_inline_level) {
     return "inlining too deep";
   }
 
@@ -392,7 +397,7 @@
 //------------------------------print_inlining---------------------------------
 // Really, the failure_msg can be a success message also.
 void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci, const char* failure_msg) const {
-  CompileTask::print_inlining(callee_method, inline_depth(), caller_bci, failure_msg ? failure_msg : "inline");
+  CompileTask::print_inlining(callee_method, inline_level(), caller_bci, failure_msg ? failure_msg : "inline");
   if (callee_method == NULL)  tty->print(" callee not monotonic or profiled");
   if (Verbose && callee_method) {
     const InlineTree *top = this;
@@ -500,25 +505,25 @@
   if (old_ilt != NULL) {
     return old_ilt;
   }
-  int new_depth_adjust = 0;
+  int max_inline_level_adjust = 0;
   if (caller_jvms->method() != NULL) {
     if (caller_jvms->method()->is_method_handle_adapter())
-      new_depth_adjust -= 1;  // don't count actions in MH or indy adapter frames
+      max_inline_level_adjust += 1;  // don't count actions in MH or indy adapter frames
     else if (callee_method->is_method_handle_invoke()) {
-      new_depth_adjust -= 1;  // don't count method handle calls from java.lang.invoke implem
+      max_inline_level_adjust += 1;  // don't count method handle calls from java.lang.invoke implem
     }
-    if (new_depth_adjust != 0 && PrintInlining) {
-      CompileTask::print_inline_indent(inline_depth());
+    if (max_inline_level_adjust != 0 && PrintInlining && (Verbose || WizardMode)) {
+      CompileTask::print_inline_indent(inline_level());
       tty->print_cr(" \\-> discounting inline depth");
     }
-    if (new_depth_adjust != 0 && C->log()) {
+    if (max_inline_level_adjust != 0 && C->log()) {
       int id1 = C->log()->identify(caller_jvms->method());
       int id2 = C->log()->identify(callee_method);
-      C->log()->elem("inline_depth_discount caller='%d' callee='%d'", id1, id2);
+      C->log()->elem("inline_level_discount caller='%d' callee='%d'", id1, id2);
     }
   }
-  InlineTree *ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _site_depth_adjust + new_depth_adjust);
-  _subtrees.append( ilt );
+  InlineTree* ilt = new InlineTree(C, this, callee_method, caller_jvms, caller_bci, recur_frequency, _max_inline_level + max_inline_level_adjust);
+  _subtrees.append(ilt);
 
   NOT_PRODUCT( _count_inlines += 1; )
 
@@ -543,7 +548,7 @@
   Compile* C = Compile::current();
 
   // Root of inline tree
-  InlineTree *ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, 0);
+  InlineTree* ilt = new InlineTree(C, NULL, C->method(), NULL, -1, 1.0F, MaxInlineLevel);
 
   return ilt;
 }
--- a/src/share/vm/opto/compile.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/compile.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -1206,11 +1206,7 @@
     // Make sure the Bottom and NotNull variants alias the same.
     // Also, make sure exact and non-exact variants alias the same.
     if( ptr == TypePtr::NotNull || ta->klass_is_exact() ) {
-      if (ta->const_oop()) {
-        tj = ta = TypeAryPtr::make(TypePtr::Constant,ta->const_oop(),ta->ary(),ta->klass(),false,offset);
-      } else {
-        tj = ta = TypeAryPtr::make(TypePtr::BotPTR,ta->ary(),ta->klass(),false,offset);
-      }
+      tj = ta = TypeAryPtr::make(TypePtr::BotPTR,ta->ary(),ta->klass(),false,offset);
     }
   }
 
--- a/src/share/vm/opto/doCall.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/doCall.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -183,7 +183,7 @@
         // TO DO:  When UseOldInlining is removed, copy the ILT code elsewhere.
         float site_invoke_ratio = prof_factor;
         // Note:  ilt is for the root of this parse, not the present call site.
-        ilt = new InlineTree(this, jvms->method(), jvms->caller(), site_invoke_ratio, 0);
+        ilt = new InlineTree(this, jvms->method(), jvms->caller(), site_invoke_ratio, MaxInlineLevel);
       }
       WarmCallInfo scratch_ci;
       if (!UseOldInlining)
--- a/src/share/vm/opto/loopTransform.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/loopTransform.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -83,7 +83,7 @@
 #ifdef ASSERT
   BoolTest::mask bt = cl->loopexit()->test_trip();
   assert(bt == BoolTest::lt || bt == BoolTest::gt ||
-         (bt == BoolTest::ne && !LoopLimitCheck), "canonical test is expected");
+         bt == BoolTest::ne, "canonical test is expected");
 #endif
 
   Node* init_n = cl->init_trip();
@@ -824,13 +824,23 @@
 //------------------------------clone_up_backedge_goo--------------------------
 // If Node n lives in the back_ctrl block and cannot float, we clone a private
 // version of n in preheader_ctrl block and return that, otherwise return n.
-Node *PhaseIdealLoop::clone_up_backedge_goo( Node *back_ctrl, Node *preheader_ctrl, Node *n ) {
+Node *PhaseIdealLoop::clone_up_backedge_goo( Node *back_ctrl, Node *preheader_ctrl, Node *n, VectorSet &visited, Node_Stack &clones ) {
   if( get_ctrl(n) != back_ctrl ) return n;
 
+  // Only visit once
+  if (visited.test_set(n->_idx)) {
+    Node *x = clones.find(n->_idx);
+    if (x != NULL)
+      return x;
+    return n;
+  }
+
   Node *x = NULL;               // If required, a clone of 'n'
   // Check for 'n' being pinned in the backedge.
   if( n->in(0) && n->in(0) == back_ctrl ) {
+    assert(clones.find(n->_idx) == NULL, "dead loop");
     x = n->clone();             // Clone a copy of 'n' to preheader
+    clones.push(x, n->_idx);
     x->set_req( 0, preheader_ctrl ); // Fix x's control input to preheader
   }
 
@@ -838,10 +848,13 @@
   // If there are no changes we can just return 'n', otherwise
   // we need to clone a private copy and change it.
   for( uint i = 1; i < n->req(); i++ ) {
-    Node *g = clone_up_backedge_goo( back_ctrl, preheader_ctrl, n->in(i) );
+    Node *g = clone_up_backedge_goo( back_ctrl, preheader_ctrl, n->in(i), visited, clones );
     if( g != n->in(i) ) {
-      if( !x )
+      if( !x ) {
+        assert(clones.find(n->_idx) == NULL, "dead loop");
         x = n->clone();
+        clones.push(x, n->_idx);
+      }
       x->set_req(i, g);
     }
   }
@@ -960,6 +973,9 @@
   post_head->set_req(LoopNode::EntryControl, zer_taken);
   set_idom(post_head, zer_taken, dd_main_exit);
 
+  Arena *a = Thread::current()->resource_area();
+  VectorSet visited(a);
+  Node_Stack clones(a, main_head->back_control()->outcnt());
   // Step A3: Make the fall-in values to the post-loop come from the
   // fall-out values of the main-loop.
   for (DUIterator_Fast imax, i = main_head->fast_outs(imax); i < imax; i++) {
@@ -968,7 +984,8 @@
       Node *post_phi = old_new[main_phi->_idx];
       Node *fallmain  = clone_up_backedge_goo(main_head->back_control(),
                                               post_head->init_control(),
-                                              main_phi->in(LoopNode::LoopBackControl));
+                                              main_phi->in(LoopNode::LoopBackControl),
+                                              visited, clones);
       _igvn.hash_delete(post_phi);
       post_phi->set_req( LoopNode::EntryControl, fallmain );
     }
@@ -1032,6 +1049,8 @@
   main_head->set_req(LoopNode::EntryControl, min_taken);
   set_idom(main_head, min_taken, dd_main_head);
 
+  visited.Clear();
+  clones.clear();
   // Step B3: Make the fall-in values to the main-loop come from the
   // fall-out values of the pre-loop.
   for (DUIterator_Fast i2max, i2 = main_head->fast_outs(i2max); i2 < i2max; i2++) {
@@ -1040,7 +1059,8 @@
       Node *pre_phi = old_new[main_phi->_idx];
       Node *fallpre  = clone_up_backedge_goo(pre_head->back_control(),
                                              main_head->init_control(),
-                                             pre_phi->in(LoopNode::LoopBackControl));
+                                             pre_phi->in(LoopNode::LoopBackControl),
+                                             visited, clones);
       _igvn.hash_delete(main_phi);
       main_phi->set_req( LoopNode::EntryControl, fallpre );
     }
@@ -1070,9 +1090,11 @@
   // direction:
   // positive stride use <
   // negative stride use >
+  //
+  // not-equal test is kept for post loop to handle case
+  // when init > limit when stride > 0 (and reverse).
 
   if (pre_end->in(CountedLoopEndNode::TestValue)->as_Bool()->_test._test == BoolTest::ne) {
-    assert(!LoopLimitCheck, "only canonical tests (lt or gt) are expected");
 
     BoolTest::mask new_test = (main_end->stride_con() > 0) ? BoolTest::lt : BoolTest::gt;
     // Modify pre loop end condition
--- a/src/share/vm/opto/loopnode.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/loopnode.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -453,7 +453,12 @@
   // Now we need to canonicalize loop condition.
   if (bt == BoolTest::ne) {
     assert(stride_con == 1 || stride_con == -1, "simple increment only");
-    bt = (stride_con > 0) ? BoolTest::lt : BoolTest::gt;
+    // 'ne' can be replaced with 'lt' only when init < limit.
+    if (stride_con > 0 && init_t->_hi < limit_t->_lo)
+      bt = BoolTest::lt;
+    // 'ne' can be replaced with 'gt' only when init > limit.
+    if (stride_con < 0 && init_t->_lo > limit_t->_hi)
+      bt = BoolTest::gt;
   }
 
   if (incl_limit) {
--- a/src/share/vm/opto/loopnode.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/loopnode.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -843,7 +843,7 @@
   void insert_pre_post_loops( IdealLoopTree *loop, Node_List &old_new, bool peel_only );
   // If Node n lives in the back_ctrl block, we clone a private version of n
   // in preheader_ctrl block and return that, otherwise return n.
-  Node *clone_up_backedge_goo( Node *back_ctrl, Node *preheader_ctrl, Node *n );
+  Node *clone_up_backedge_goo( Node *back_ctrl, Node *preheader_ctrl, Node *n, VectorSet &visited, Node_Stack &clones );
 
   // Take steps to maximally unroll the loop.  Peel any odd iterations, then
   // unroll to do double iterations.  The next round of major loop transforms
--- a/src/share/vm/opto/macro.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/macro.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -391,13 +391,9 @@
     }
   }
   // Check if an appropriate new value phi already exists.
-  Node* new_phi = NULL;
-  uint size = value_phis->size();
-  for (uint i=0; i < size; i++) {
-    if ( mem->_idx == value_phis->index_at(i) ) {
-      return value_phis->node_at(i);
-    }
-  }
+  Node* new_phi = value_phis->find(mem->_idx);
+  if (new_phi != NULL)
+    return new_phi;
 
   if (level <= 0) {
     return NULL; // Give up: phi tree too deep
--- a/src/share/vm/opto/node.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/node.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -2012,6 +2012,16 @@
   _inode_top = _inodes + old_top;        // restore _top
 }
 
+// Node_Stack is used to map nodes.
+Node* Node_Stack::find(uint idx) const {
+  uint sz = size();
+  for (uint i=0; i < sz; i++) {
+    if (idx == index_at(i) )
+      return node_at(i);
+  }
+  return NULL;
+}
+
 //=============================================================================
 uint TypeNode::size_of() const { return sizeof(*this); }
 #ifndef PRODUCT
--- a/src/share/vm/opto/node.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/node.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -1463,6 +1463,9 @@
   bool is_nonempty() const { return (_inode_top >= _inodes); }
   bool is_empty() const { return (_inode_top < _inodes); }
   void clear() { _inode_top = _inodes - 1; } // retain storage
+
+  // Node_Stack is used to map nodes.
+  Node* find(uint idx) const;
 };
 
 
--- a/src/share/vm/opto/parse.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/opto/parse.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -50,7 +50,7 @@
   // Always between 0.0 and 1.0.  Represents the percentage of the method's
   // total execution time used at this call site.
   const float _site_invoke_ratio;
-  const int   _site_depth_adjust;
+  const int   _max_inline_level;  // the maximum inline level for this sub-tree (may be adjusted)
   float compute_callee_frequency( int caller_bci ) const;
 
   GrowableArray<InlineTree*> _subtrees;
@@ -63,7 +63,7 @@
              JVMState* caller_jvms,
              int caller_bci,
              float site_invoke_ratio,
-             int site_depth_adjust);
+             int max_inline_level);
   InlineTree *build_inline_tree_for_callee(ciMethod* callee_method,
                                            JVMState* caller_jvms,
                                            int caller_bci);
@@ -74,7 +74,7 @@
 
   InlineTree *caller_tree()       const { return _caller_tree;  }
   InlineTree* callee_at(int bci, ciMethod* m) const;
-  int         inline_depth()      const { return stack_depth() + _site_depth_adjust; }
+  int         inline_level()      const { return stack_depth(); }
   int         stack_depth()       const { return _caller_jvms ? _caller_jvms->depth() : 0; }
 
 public:
@@ -82,7 +82,7 @@
   static InlineTree* find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee, bool create_if_not_found = false);
 
   // For temporary (stack-allocated, stateless) ilts:
-  InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, float site_invoke_ratio, int site_depth_adjust);
+  InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, float site_invoke_ratio, int max_inline_level);
 
   // InlineTree enum
   enum InlineStyle {
--- a/src/share/vm/prims/methodHandleWalk.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/prims/methodHandleWalk.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -425,6 +425,8 @@
         ArgToken arg = _outgoing.at(arg_slot);
         assert(dest == arg.basic_type(), "");
         arg = make_conversion(T_OBJECT, dest_klass, Bytecodes::_checkcast, arg, CHECK_(empty));
+        // replace the object by the result of the cast, to make the compiler happy:
+        change_argument(T_OBJECT, arg_slot, T_OBJECT, arg);
         debug_only(dest_klass = (klassOop)badOop);
         break;
       }
@@ -467,7 +469,7 @@
         ArgToken arglist[2];
         arglist[0] = arg;         // outgoing 'this'
         arglist[1] = ArgToken();  // sentinel
-        arg = make_invoke(NULL, unboxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_(empty));
+        arg = make_invoke(methodHandle(), unboxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_(empty));
         change_argument(T_OBJECT, arg_slot, dest, arg);
         break;
       }
@@ -483,7 +485,7 @@
         ArgToken arglist[2];
         arglist[0] = arg;         // outgoing value
         arglist[1] = ArgToken();  // sentinel
-        arg = make_invoke(NULL, boxer, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK_(empty));
+        arg = make_invoke(methodHandle(), boxer, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK_(empty));
         change_argument(src, arg_slot, T_OBJECT, arg);
         break;
       }
@@ -599,8 +601,9 @@
           lose("bad vmlayout slot", CHECK_(empty));
         }
         // FIXME: consider inlining the invokee at the bytecode level
-        ArgToken ret = make_invoke(methodOop(invoker), vmIntrinsics::_none,
+        ArgToken ret = make_invoke(methodHandle(THREAD, methodOop(invoker)), vmIntrinsics::_invokeGeneric,
                                    Bytecodes::_invokevirtual, false, 1+argc, &arglist[0], CHECK_(empty));
+        // The iid = _invokeGeneric really means to adjust reference types as needed.
         DEBUG_ONLY(invoker = NULL);
         if (rtype == T_OBJECT) {
           klassOop rklass = java_lang_Class::as_klassOop( java_lang_invoke_MethodType::rtype(recursive_mtype()) );
@@ -657,7 +660,7 @@
         arglist[0] = array_arg;   // value to check
         arglist[1] = length_arg;  // length to check
         arglist[2] = ArgToken();  // sentinel
-        make_invoke(NULL, vmIntrinsics::_checkSpreadArgument,
+        make_invoke(methodHandle(), vmIntrinsics::_checkSpreadArgument,
                     Bytecodes::_invokestatic, false, 2, &arglist[0], CHECK_(empty));
 
         // Spread out the array elements.
@@ -680,7 +683,7 @@
           ArgToken offset_arg = make_prim_constant(T_INT, &offset_jvalue, CHECK_(empty));
           ArgToken element_arg = make_fetch(element_type, element_klass(), aload_op, array_arg, offset_arg, CHECK_(empty));
           change_argument(T_VOID, ap, element_type, element_arg);
-          ap += type2size[element_type];
+          //ap += type2size[element_type];  // don't do this; insert next arg to *right* of previous
         }
         break;
       }
@@ -731,7 +734,7 @@
   }
   assert(ap == _outgoing_argc, "");
   arglist[ap] = ArgToken();  // add a sentinel, for the sake of asserts
-  return make_invoke(chain().last_method_oop(),
+  return make_invoke(chain().last_method(),
                      vmIntrinsics::_none,
                      chain().last_invoke_code(), true,
                      ap, arglist, THREAD);
@@ -853,7 +856,6 @@
   if (src != dst) {
     if (MethodHandles::same_basic_type_for_returns(src, dst, /*raw*/ true)) {
       if (MethodHandles::is_float_fixed_reinterpretation_cast(src, dst)) {
-        if (for_return)  Untested("MHW return raw conversion");  // still untested
         vmIntrinsics::ID iid = vmIntrinsics::for_raw_conversion(src, dst);
         if (iid == vmIntrinsics::_none) {
           lose("no raw conversion method", CHECK);
@@ -865,18 +867,24 @@
           assert(arg.token_type() >= tt_symbolic || src == arg.basic_type(), "sanity");
           arglist[0] = arg;         // outgoing 'this'
           arglist[1] = ArgToken();  // sentinel
-          arg = make_invoke(NULL, iid, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK);
+          arg = make_invoke(methodHandle(), iid, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK);
           change_argument(src, slot, dst, arg);
         } else {
           // return type conversion
-          klassOop arg_klass = NULL;
-          arglist[0] = make_parameter(src, arg_klass, -1, CHECK);  // return value
-          arglist[1] = ArgToken();                                 // sentinel
-          (void) make_invoke(NULL, iid, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK);
+          if (_return_conv == vmIntrinsics::_none) {
+            _return_conv = iid;
+          } else if (_return_conv == vmIntrinsics::for_raw_conversion(dst, src)) {
+            _return_conv = vmIntrinsics::_none;
+          } else if (_return_conv != zero_return_conv()) {
+            lose(err_msg("requested raw return conversion not allowed: %s -> %s (before %s)", type2name(src), type2name(dst), vmIntrinsics::name_at(_return_conv)), CHECK);
+          }
         }
       } else {
         // Nothing to do.
       }
+    } else if (for_return && (!is_subword_type(src) || !is_subword_type(dst))) {
+      // This can occur in exception-throwing MHs, which have a fictitious return value encoded as Void or Empty.
+      _return_conv = zero_return_conv();
     } else if (src == T_OBJECT && is_java_primitive(dst)) {
       // ref-to-prim: discard ref, push zero
       lose("requested ref-to-prim conversion not expected", CHECK);
@@ -896,6 +904,7 @@
     _thread(THREAD),
     _bytecode(THREAD, 50),
     _constants(THREAD, 10),
+    _non_bcp_klasses(THREAD, 5),
     _cur_stack(0),
     _max_stack(0),
     _rtype(T_ILLEGAL)
@@ -908,6 +917,15 @@
   _name_index      = cpool_symbol_put(name);
   _signature_index = cpool_symbol_put(signature);
 
+  // To make the resulting methods more recognizable by
+  // stack walkers and compiler heuristics,
+  // we put them in holder class MethodHandle.
+  // See klass_is_method_handle_adapter_holder
+  // and methodOopDesc::is_method_handle_adapter.
+  _target_klass = SystemDictionaryHandles::MethodHandle_klass();
+
+  check_non_bcp_klasses(java_lang_invoke_MethodHandle::type(root()), CHECK);
+
   // Get return type klass.
   Handle first_mtype(THREAD, chain().method_type_oop());
   // _rklass is NULL for primitives.
@@ -929,6 +947,7 @@
   assert(_thread == THREAD, "must be same thread");
   methodHandle nullHandle;
   (void) walk(CHECK_(nullHandle));
+  record_non_bcp_klasses();
   return get_method_oop(CHECK_(nullHandle));
 }
 
@@ -1197,10 +1216,18 @@
   }
   case T_OBJECT: {
     Handle value = arg.object();
-    if (value.is_null())
+    if (value.is_null()) {
       emit_bc(Bytecodes::_aconst_null);
-    else
-      emit_bc(Bytecodes::_ldc, cpool_object_put(value));
+      break;
+    }
+    if (java_lang_Class::is_instance(value())) {
+      klassOop k = java_lang_Class::as_klassOop(value());
+      if (k != NULL) {
+        emit_bc(Bytecodes::_ldc, cpool_klass_put(k));
+        break;
+      }
+    }
+    emit_bc(Bytecodes::_ldc, cpool_object_put(value));
     break;
   }
   default:
@@ -1260,6 +1287,7 @@
       index = src.index();
     }
     emit_bc(op, cpool_klass_put(tk));
+    check_non_bcp_klass(tk, CHECK_(src));
     // Allocate a new local for the type so that we don't hide the
     // previous type from the verifier.
     index = new_local_index(type);
@@ -1292,15 +1320,15 @@
 
 // Emit bytecodes for the given invoke instruction.
 MethodHandleWalker::ArgToken
-MethodHandleCompiler::make_invoke(methodOop m, vmIntrinsics::ID iid,
+MethodHandleCompiler::make_invoke(methodHandle m, vmIntrinsics::ID iid,
                                   Bytecodes::Code op, bool tailcall,
                                   int argc, MethodHandleWalker::ArgToken* argv,
                                   TRAPS) {
   ArgToken zero;
-  if (m == NULL) {
+  if (m.is_null()) {
     // Get the intrinsic methodOop.
-    m = vmIntrinsics::method_for(iid);
-    if (m == NULL) {
+    m = methodHandle(THREAD, vmIntrinsics::method_for(iid));
+    if (m.is_null()) {
       lose(vmIntrinsics::name_at(iid), CHECK_(zero));
     }
   }
@@ -1309,18 +1337,46 @@
   Symbol*  name      = m->name();
   Symbol*  signature = m->signature();
 
+  if (iid == vmIntrinsics::_invokeGeneric &&
+      argc >= 1 && argv[0].token_type() == tt_constant) {
+    assert(m->intrinsic_id() == vmIntrinsics::_invokeExact, "");
+    Handle receiver = argv[0].object();
+    Handle rtype(THREAD, java_lang_invoke_MethodHandle::type(receiver()));
+    Handle mtype(THREAD, m->method_handle_type());
+    if (rtype() != mtype()) {
+      assert(java_lang_invoke_MethodType::form(rtype()) ==
+             java_lang_invoke_MethodType::form(mtype()),
+             "must be the same shape");
+      // customize m to the exact required rtype
+      bool has_non_bcp_klass = check_non_bcp_klasses(rtype(), CHECK_(zero));
+      TempNewSymbol sig2 = java_lang_invoke_MethodType::as_signature(rtype(), true, CHECK_(zero));
+      methodHandle m2;
+      if (!has_non_bcp_klass) {
+        methodOop m2_oop = SystemDictionary::find_method_handle_invoke(m->name(), sig2,
+                                                                       KlassHandle(), CHECK_(zero));
+        m2 = methodHandle(THREAD, m2_oop);
+      }
+      if (m2.is_null()) {
+        // just build it fresh
+        m2 = methodOopDesc::make_invoke_method(klass, m->name(), sig2, rtype, CHECK_(zero));
+        if (m2.is_null())
+          lose(err_msg("no customized invoker %s", sig2->as_utf8()), CHECK_(zero));
+      }
+      m = m2;
+      signature = m->signature();
+    }
+  }
+
+  check_non_bcp_klass(klass, CHECK_(zero));
+  if (m->is_method_handle_invoke()) {
+    check_non_bcp_klasses(m->method_handle_type(), CHECK_(zero));
+  }
+
   // Count the number of arguments, not the size
   ArgumentCount asc(signature);
   assert(argc == asc.size() + ((op == Bytecodes::_invokestatic || op == Bytecodes::_invokedynamic) ? 0 : 1),
          "argc mismatch");
 
-  if (tailcall) {
-    // Actually, in order to make these methods more recognizable,
-    // let's put them in holder class MethodHandle.  That way stack
-    // walkers and compiler heuristics can recognize them.
-    _target_klass = SystemDictionary::MethodHandle_klass();
-  }
-
   // Inline the method.
   InvocationCounter* ic = m->invocation_counter();
   ic->set_carry_flag();
@@ -1353,7 +1409,7 @@
   int signature_index     = cpool_symbol_put(signature);
   int name_and_type_index = cpool_name_and_type_put(name_index, signature_index);
   int klass_index         = cpool_klass_put(klass);
-  int methodref_index     = cpool_methodref_put(klass_index, name_and_type_index);
+  int methodref_index     = cpool_methodref_put(op, klass_index, name_and_type_index, m);
 
   // Generate invoke.
   switch (op) {
@@ -1380,6 +1436,20 @@
   stack_push(rbt);  // The return value is already pushed onto the stack.
   ArgToken ret;
   if (tailcall) {
+    if (return_conv() == zero_return_conv()) {
+      rbt = T_VOID;  // discard value
+    } else if (return_conv() != vmIntrinsics::_none) {
+      // return value conversion
+      int index = new_local_index(rbt);
+      emit_store(rbt, index);
+      ArgToken arglist[2];
+      arglist[0] = ArgToken(tt_temporary, rbt, index);
+      arglist[1] = ArgToken();  // sentinel
+      ret = make_invoke(methodHandle(), return_conv(), Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK_(zero));
+      set_return_conv(vmIntrinsics::_none);
+      rbt = ret.basic_type();
+      emit_load(rbt, ret.index());
+    }
     if (rbt != _rtype) {
       if (rbt == T_VOID) {
         // push a zero of the right sort
@@ -1425,6 +1495,7 @@
     case T_OBJECT:
       if (_rklass.not_null() && _rklass() != SystemDictionary::Object_klass() && !Klass::cast(_rklass())->is_interface()) {
         emit_bc(Bytecodes::_checkcast, cpool_klass_put(_rklass()));
+        check_non_bcp_klass(_rklass(), CHECK_(zero));
       }
       emit_bc(Bytecodes::_areturn);
       break;
@@ -1525,6 +1596,52 @@
   return index;
 }
 
+bool MethodHandleCompiler::check_non_bcp_klasses(Handle method_type, TRAPS) {
+  bool res = false;
+  for (int i = -1, len = java_lang_invoke_MethodType::ptype_count(method_type()); i < len; i++) {
+    oop ptype = (i == -1
+                 ? java_lang_invoke_MethodType::rtype(method_type())
+                 : java_lang_invoke_MethodType::ptype(method_type(), i));
+    res |= check_non_bcp_klass(java_lang_Class::as_klassOop(ptype), CHECK_(false));
+  }
+  return res;
+}
+
+bool MethodHandleCompiler::check_non_bcp_klass(klassOop klass, TRAPS) {
+  klass = methodOopDesc::check_non_bcp_klass(klass);
+  if (klass != NULL) {
+    Symbol* name = Klass::cast(klass)->name();
+    for (int i = _non_bcp_klasses.length() - 1; i >= 0; i--) {
+      klassOop k2 = _non_bcp_klasses.at(i)();
+      if (Klass::cast(k2)->name() == name) {
+        if (k2 != klass) {
+          lose(err_msg("unsupported klass name alias %s", name->as_utf8()), THREAD);
+        }
+        return true;
+      }
+    }
+    _non_bcp_klasses.append(KlassHandle(THREAD, klass));
+    return true;
+  }
+  return false;
+}
+
+void MethodHandleCompiler::record_non_bcp_klasses() {
+  // Append extra klasses to constant pool, to guide klass lookup.
+  for (int k = 0; k < _non_bcp_klasses.length(); k++) {
+    klassOop non_bcp_klass = _non_bcp_klasses.at(k)();
+    bool add_to_cp = true;
+    for (int j = 1; j < _constants.length(); j++) {
+      ConstantValue* cv = _constants.at(j);
+      if (cv != NULL && cv->tag() == JVM_CONSTANT_Class
+          && cv->klass_oop() == non_bcp_klass) {
+        add_to_cp = false;
+        break;
+      }
+    }
+    if (add_to_cp)  cpool_klass_put(non_bcp_klass);
+  }
+}
 
 constantPoolHandle MethodHandleCompiler::get_constant_pool(TRAPS) const {
   constantPoolHandle nullHandle;
@@ -1544,6 +1661,8 @@
     case JVM_CONSTANT_Double:      cpool->double_at_put(       i, cv->get_jdouble()                    ); break;
     case JVM_CONSTANT_Class:       cpool->klass_at_put(        i, cv->klass_oop()                      ); break;
     case JVM_CONSTANT_Methodref:   cpool->method_at_put(       i, cv->first_index(), cv->second_index()); break;
+    case JVM_CONSTANT_InterfaceMethodref:
+                                cpool->interface_method_at_put(i, cv->first_index(), cv->second_index()); break;
     case JVM_CONSTANT_NameAndType: cpool->name_and_type_at_put(i, cv->first_index(), cv->second_index()); break;
     case JVM_CONSTANT_Object:      cpool->object_at_put(       i, cv->object_oop()                     ); break;
     default: ShouldNotReachHere();
@@ -1558,6 +1677,8 @@
     }
   }
 
+  cpool->set_preresolution();
+
   // Set the constant pool holder to the target method's class.
   cpool->set_pool_holder(_target_klass());
 
@@ -1606,6 +1727,33 @@
   Rewriter::rewrite(_target_klass(), cpool, methods, CHECK_(empty));  // Use fake class.
   Rewriter::relocate_and_link(_target_klass(), methods, CHECK_(empty));  // Use fake class.
 
+  // Pre-resolve selected CP cache entries, to avoid problems with class loader scoping.
+  constantPoolCacheHandle cpc(THREAD, cpool->cache());
+  for (int i = 0; i < cpc->length(); i++) {
+    ConstantPoolCacheEntry* e = cpc->entry_at(i);
+    assert(!e->is_secondary_entry(), "no indy instructions in here, yet");
+    int constant_pool_index = e->constant_pool_index();
+    ConstantValue* cv = _constants.at(constant_pool_index);
+    if (!cv->has_linkage())  continue;
+    methodHandle m = cv->linkage();
+    int index;
+    switch (cv->tag()) {
+    case JVM_CONSTANT_Methodref:
+      index = m->vtable_index();
+      if (m->is_static()) {
+        e->set_method(Bytecodes::_invokestatic, m, index);
+      } else {
+        e->set_method(Bytecodes::_invokespecial, m, index);
+        e->set_method(Bytecodes::_invokevirtual, m, index);
+      }
+      break;
+    case JVM_CONSTANT_InterfaceMethodref:
+      index = klassItable::compute_itable_index(m());
+      e->set_interface_call(m, index);
+      break;
+    }
+  }
+
   // Set the invocation counter's count to the invoke count of the
   // original call site.
   InvocationCounter* ic = m->invocation_counter();
@@ -1696,6 +1844,9 @@
       _param_state(0),
       _temp_num(0)
   {
+    out->print("MethodHandle:");
+    java_lang_invoke_MethodType::print_signature(java_lang_invoke_MethodHandle::type(root()), out);
+    out->print(" : #");
     start_params();
   }
   virtual ArgToken make_parameter(BasicType type, klassOop tk, int argnum, TRAPS) {
@@ -1759,12 +1910,12 @@
     _strbuf.print(")");
     return maybe_make_temp("fetch", type, "x");
   }
-  virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid,
+  virtual ArgToken make_invoke(methodHandle m, vmIntrinsics::ID iid,
                                Bytecodes::Code op, bool tailcall,
                                int argc, ArgToken* argv, TRAPS) {
     Symbol* name;
     Symbol* sig;
-    if (m != NULL) {
+    if (m.not_null()) {
       name = m->name();
       sig  = m->signature();
     } else {
--- a/src/share/vm/prims/methodHandleWalk.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/prims/methodHandleWalk.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -98,6 +98,7 @@
   int       bound_arg_slot()    { assert(is_bound(), ""); return _arg_slot; }
   oop       bound_arg_oop()     { assert(is_bound(), ""); return BoundMethodHandle_argument_oop(); }
 
+  methodHandle last_method()    { assert(is_last(), ""); return _last_method; }
   methodOop last_method_oop()   { assert(is_last(), ""); return _last_method(); }
   Bytecodes::Code last_invoke_code() { assert(is_last(), ""); return _last_invoke; }
 
@@ -181,6 +182,8 @@
   GrowableArray<ArgToken>  _outgoing;       // current outgoing parameter slots
   int                      _outgoing_argc;  // # non-empty outgoing slots
 
+  vmIntrinsics::ID _return_conv;            // Return conversion required by raw retypes.
+
   // Replace a value of type old_type at slot (and maybe slot+1) with the new value.
   // If old_type != T_VOID, remove the old argument at that point.
   // If new_type != T_VOID, insert the new argument at that point.
@@ -219,7 +222,8 @@
     : _chain(root, THREAD),
       _for_invokedynamic(for_invokedynamic),
       _outgoing(THREAD, 10),
-      _outgoing_argc(0)
+      _outgoing_argc(0),
+      _return_conv(vmIntrinsics::_none)
   {
     _local_index = for_invokedynamic ? 0 : 1;
   }
@@ -228,6 +232,10 @@
 
   bool for_invokedynamic() const { return _for_invokedynamic; }
 
+  vmIntrinsics::ID return_conv() const { return _return_conv; }
+  void set_return_conv(vmIntrinsics::ID c) { _return_conv = c; }
+  static vmIntrinsics::ID zero_return_conv() { return vmIntrinsics::_min; }
+
   int new_local_index(BasicType bt) {
     //int index = _for_invokedynamic ? _local_index : _local_index - 1;
     int index = _local_index;
@@ -243,9 +251,9 @@
   virtual ArgToken make_oop_constant(oop con, TRAPS) = 0;
   virtual ArgToken make_conversion(BasicType type, klassOop tk, Bytecodes::Code op, const ArgToken& src, TRAPS) = 0;
   virtual ArgToken make_fetch(BasicType type, klassOop tk, Bytecodes::Code op, const ArgToken& base, const ArgToken& offset, TRAPS) = 0;
-  virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS) = 0;
+  virtual ArgToken make_invoke(methodHandle m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS) = 0;
 
-  // For make_invoke, the methodOop can be NULL if the intrinsic ID
+  // For make_invoke, the methodHandle can be NULL if the intrinsic ID
   // is something other than vmIntrinsics::_none.
 
   // and in case anyone cares to related the previous actions to the chain:
@@ -280,6 +288,7 @@
     JavaValue _value;
     Handle    _handle;
     Symbol*   _sym;
+    methodHandle _method;  // pre-linkage
 
   public:
     // Constructor for oop types.
@@ -328,11 +337,21 @@
     jlong     get_jlong()    const { return _value.get_jlong();   }
     jfloat    get_jfloat()   const { return _value.get_jfloat();  }
     jdouble   get_jdouble()  const { return _value.get_jdouble(); }
+
+    void set_linkage(methodHandle method) {
+      assert(_method.is_null(), "");
+      _method = method;
+    }
+    bool     has_linkage()   const { return _method.not_null(); }
+    methodHandle linkage()   const { return _method; }
   };
 
   // Fake constant pool.
   GrowableArray<ConstantValue*> _constants;
 
+  // Non-BCP classes that appear in associated MethodTypes (require special handling).
+  GrowableArray<KlassHandle> _non_bcp_klasses;
+
   // Accumulated compiler state:
   GrowableArray<unsigned char> _bytecode;
 
@@ -368,15 +387,20 @@
     return _constants.append(cv);
   }
 
-  int cpool_oop_reference_put(int tag, int first_index, int second_index) {
+  int cpool_oop_reference_put(int tag, int first_index, int second_index, methodHandle method) {
     if (first_index == 0 && second_index == 0)  return 0;
     assert(first_index != 0 && second_index != 0, "no zero indexes");
     ConstantValue* cv = new ConstantValue(tag, first_index, second_index);
+    if (method.not_null())  cv->set_linkage(method);
     return _constants.append(cv);
   }
 
   int cpool_primitive_put(BasicType type, jvalue* con);
 
+  bool check_non_bcp_klasses(Handle method_type, TRAPS);
+  bool check_non_bcp_klass(klassOop klass, TRAPS);
+  void record_non_bcp_klasses();
+
   int cpool_int_put(jint value) {
     jvalue con; con.i = value;
     return cpool_primitive_put(T_INT, &con);
@@ -403,11 +427,12 @@
   int cpool_klass_put(klassOop klass) {
     return cpool_oop_put(JVM_CONSTANT_Class, klass);
   }
-  int cpool_methodref_put(int class_index, int name_and_type_index) {
-    return cpool_oop_reference_put(JVM_CONSTANT_Methodref, class_index, name_and_type_index);
+  int cpool_methodref_put(Bytecodes::Code op, int class_index, int name_and_type_index, methodHandle method) {
+    int tag = (op == Bytecodes::_invokeinterface ? JVM_CONSTANT_InterfaceMethodref : JVM_CONSTANT_Methodref);
+    return cpool_oop_reference_put(tag, class_index, name_and_type_index, method);
   }
   int cpool_name_and_type_put(int name_index, int signature_index) {
-    return cpool_oop_reference_put(JVM_CONSTANT_NameAndType, name_index, signature_index);
+    return cpool_oop_reference_put(JVM_CONSTANT_NameAndType, name_index, signature_index, methodHandle());
   }
 
   void emit_bc(Bytecodes::Code op, int index = 0, int args_size = -1);
@@ -428,7 +453,7 @@
 
   virtual ArgToken make_conversion(BasicType type, klassOop tk, Bytecodes::Code op, const ArgToken& src, TRAPS);
   virtual ArgToken make_fetch(BasicType type, klassOop tk, Bytecodes::Code op, const ArgToken& base, const ArgToken& offset, TRAPS);
-  virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS);
+  virtual ArgToken make_invoke(methodHandle m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS);
 
   // Get a real constant pool.
   constantPoolHandle get_constant_pool(TRAPS) const;
--- a/src/share/vm/prims/methodHandles.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/prims/methodHandles.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -24,12 +24,14 @@
 
 #include "precompiled.hpp"
 #include "classfile/symbolTable.hpp"
+#include "compiler/compileBroker.hpp"
 #include "interpreter/interpreter.hpp"
 #include "interpreter/oopMapCache.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/oopFactory.hpp"
 #include "prims/methodHandles.hpp"
 #include "prims/methodHandleWalk.hpp"
+#include "runtime/compilationPolicy.hpp"
 #include "runtime/javaCalls.hpp"
 #include "runtime/reflection.hpp"
 #include "runtime/signature.hpp"
@@ -629,6 +631,8 @@
   // convert the external string name to an internal symbol
   TempNewSymbol name = java_lang_String::as_symbol_or_null(name_str());
   if (name == NULL)  return;  // no such name
+  if (name == vmSymbols::class_initializer_name())
+    return; // illegal name
 
   Handle polymorphic_method_type;
   bool polymorphic_signature = false;
@@ -765,7 +769,9 @@
         m = NULL;
         // try again with a different class loader...
       }
-      if (m != NULL) {
+      if (m != NULL &&
+          m->is_method_handle_invoke() &&
+          java_lang_invoke_MethodType::equals(polymorphic_method_type(), m->method_handle_type())) {
         int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS);
         java_lang_invoke_MemberName::set_vmtarget(mname(),  m);
         java_lang_invoke_MemberName::set_vmindex(mname(),   m->vtable_index());
@@ -984,6 +990,48 @@
 // This is for debugging and reflection.
 oop MethodHandles::encode_target(Handle mh, int format, TRAPS) {
   assert(java_lang_invoke_MethodHandle::is_instance(mh()), "must be a MH");
+  if (format == ETF_FORCE_DIRECT_HANDLE ||
+      format == ETF_COMPILE_DIRECT_HANDLE) {
+    // Internal function for stress testing.
+    Handle mt = java_lang_invoke_MethodHandle::type(mh());
+    int invocation_count = 10000;
+    TempNewSymbol signature = java_lang_invoke_MethodType::as_signature(mt(), true, CHECK_NULL);
+    bool omit_receiver_argument = true;
+    MethodHandleCompiler mhc(mh, vmSymbols::invoke_name(), signature, invocation_count, omit_receiver_argument, CHECK_NULL);
+    methodHandle m = mhc.compile(CHECK_NULL);
+    if (StressMethodHandleWalk && Verbose || PrintMiscellaneous) {
+      tty->print_cr("MethodHandleNatives.getTarget(%s)",
+                    format == ETF_FORCE_DIRECT_HANDLE ? "FORCE_DIRECT" : "COMPILE_DIRECT");
+      if (Verbose) {
+        m->print_codes();
+      }
+    }
+    if (StressMethodHandleWalk) {
+      InterpreterOopMap mask;
+      OopMapCache::compute_one_oop_map(m, m->code_size() - 1, &mask);
+    }
+    if ((format == ETF_COMPILE_DIRECT_HANDLE ||
+         CompilationPolicy::must_be_compiled(m))
+        && !instanceKlass::cast(m->method_holder())->is_not_initialized()
+        && CompilationPolicy::can_be_compiled(m)) {
+      // Force compilation
+      CompileBroker::compile_method(m, InvocationEntryBci,
+                                    CompLevel_initial_compile,
+                                    methodHandle(), 0, "MethodHandleNatives.getTarget",
+                                    CHECK_NULL);
+    }
+    // Now wrap m in a DirectMethodHandle.
+    instanceKlassHandle dmh_klass(THREAD, SystemDictionary::DirectMethodHandle_klass());
+    Handle dmh = dmh_klass->allocate_instance_handle(CHECK_NULL);
+    JavaValue ignore_result(T_VOID);
+    Symbol* init_name = vmSymbols::object_initializer_name();
+    Symbol* init_sig  = vmSymbols::notifyGenericMethodType_signature();
+    JavaCalls::call_special(&ignore_result, dmh,
+                            SystemDictionaryHandles::MethodHandle_klass(), init_name, init_sig,
+                            java_lang_invoke_MethodHandle::type(mh()), CHECK_NULL);
+    MethodHandles::init_DirectMethodHandle(dmh, m, false, CHECK_NULL);
+    return dmh();
+  }
   if (format == ETF_HANDLE_OR_METHOD_NAME) {
     oop target = java_lang_invoke_MethodHandle::vmtarget(mh());
     if (target == NULL) {
@@ -1219,6 +1267,12 @@
           klassOop aklass_oop = SystemDictionary::resolve_or_null(name, loader, domain, CHECK);
           if (aklass_oop != NULL)
             aklass = KlassHandle(THREAD, aklass_oop);
+          if (aklass.is_null() &&
+              pklass.not_null() &&
+              loader.is_null() &&
+              pklass->name() == name)
+            // accept name equivalence here, since that's the best we can do
+            aklass = pklass;
         }
       } else {
         // for method handle invokers we don't look at the name in the signature
@@ -2652,6 +2706,17 @@
     }
     InterpreterOopMap mask;
     OopMapCache::compute_one_oop_map(m, m->code_size() - 1, &mask);
+    // compile to object code if -Xcomp or WizardMode
+    if ((WizardMode ||
+         CompilationPolicy::must_be_compiled(m))
+        && !instanceKlass::cast(m->method_holder())->is_not_initialized()
+        && CompilationPolicy::can_be_compiled(m)) {
+      // Force compilation
+      CompileBroker::compile_method(m, InvocationEntryBci,
+                                    CompLevel_initial_compile,
+                                    methodHandle(), 0, "StressMethodHandleWalk",
+                                    CHECK);
+    }
   }
 }
 
@@ -2771,7 +2836,12 @@
     // Build a BMH on top of a DMH or another BMH:
     MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK);
   }
-  stress_method_handle_walk(mh, CHECK);
+
+  if (StressMethodHandleWalk) {
+    if (mh->klass() == SystemDictionary::BoundMethodHandle_klass())
+      stress_method_handle_walk(mh, CHECK);
+    // else don't, since the subclass has not yet initialized its own fields
+  }
 }
 JVM_END
 
--- a/src/share/vm/prims/methodHandles.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/prims/methodHandles.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -588,6 +588,8 @@
     ETF_DIRECT_HANDLE         = 1, // ultimate method handle (will be a DMH, may be self)
     ETF_METHOD_NAME           = 2, // ultimate method as MemberName
     ETF_REFLECT_METHOD        = 3, // ultimate method as java.lang.reflect object (sans refClass)
+    ETF_FORCE_DIRECT_HANDLE   = 64,
+    ETF_COMPILE_DIRECT_HANDLE = 65,
 
     // ad hoc constants
     OP_ROT_ARGS_DOWN_LIMIT_BIAS = -1
--- a/src/share/vm/runtime/advancedThresholdPolicy.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/advancedThresholdPolicy.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -171,7 +171,7 @@
       // If a method has been stale for some time, remove it from the queue.
       if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) {
         if (PrintTieredEvents) {
-          print_event(KILL, method, method, task->osr_bci(), (CompLevel)task->comp_level());
+          print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level());
         }
         CompileTaskWrapper ctw(task); // Frees the task
         compile_queue->remove(task);
@@ -192,7 +192,7 @@
   if (max_task->comp_level() == CompLevel_full_profile && is_method_profiled(max_method)) {
     max_task->set_comp_level(CompLevel_limited_profile);
     if (PrintTieredEvents) {
-      print_event(UPDATE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level());
+      print_event(UPDATE_IN_QUEUE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level());
     }
   }
 
@@ -259,6 +259,17 @@
   return false;
 }
 
+// Inlining control: if we're compiling a profiled method with C1 and the callee
+// is known to have OSRed in a C2 version, don't inline it.
+bool AdvancedThresholdPolicy::should_not_inline(ciEnv* env, ciMethod* callee) {
+  CompLevel comp_level = (CompLevel)env->comp_level();
+  if (comp_level == CompLevel_full_profile ||
+      comp_level == CompLevel_limited_profile) {
+    return callee->highest_osr_comp_level() == CompLevel_full_optimization;
+  }
+  return false;
+}
+
 // Create MDO if necessary.
 void AdvancedThresholdPolicy::create_mdo(methodHandle mh, TRAPS) {
   if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return;
@@ -378,8 +389,9 @@
 }
 
 // Determine if a method should be compiled with a normal entry point at a different level.
-CompLevel AdvancedThresholdPolicy::call_event(methodOop method,  CompLevel cur_level) {
-  CompLevel osr_level = (CompLevel) method->highest_osr_comp_level();
+CompLevel AdvancedThresholdPolicy::call_event(methodOop method, CompLevel cur_level) {
+  CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(),
+                             common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level));
   CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level);
 
   // If OSR method level is greater than the regular method level, the levels should be
@@ -400,15 +412,16 @@
 
 // Determine if we should do an OSR compilation of a given method.
 CompLevel AdvancedThresholdPolicy::loop_event(methodOop method, CompLevel cur_level) {
+  CompLevel next_level = common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level);
   if (cur_level == CompLevel_none) {
     // If there is a live OSR method that means that we deopted to the interpreter
     // for the transition.
-    CompLevel osr_level = (CompLevel)method->highest_osr_comp_level();
+    CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level);
     if (osr_level > CompLevel_none) {
       return osr_level;
     }
   }
-  return common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level);
+  return next_level;
 }
 
 // Update the rate and submit compile
@@ -418,10 +431,9 @@
   CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", THREAD);
 }
 
-
 // Handle the invocation event.
 void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh,
-                                                      CompLevel level, TRAPS) {
+                                                      CompLevel level, nmethod* nm, TRAPS) {
   if (should_create_mdo(mh(), level)) {
     create_mdo(mh, THREAD);
   }
@@ -436,32 +448,81 @@
 // Handle the back branch event. Notice that we can compile the method
 // with a regular entry from here.
 void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh,
-                                                       int bci, CompLevel level, TRAPS) {
+                                                       int bci, CompLevel level, nmethod* nm, TRAPS) {
   if (should_create_mdo(mh(), level)) {
     create_mdo(mh, THREAD);
   }
+  // Check if MDO should be created for the inlined method
+  if (should_create_mdo(imh(), level)) {
+    create_mdo(imh, THREAD);
+  }
 
-  // If the method is already compiling, quickly bail out.
-  if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, bci)) {
-    // Use loop event as an opportinity to also check there's been
-    // enough calls.
-    CompLevel cur_level = comp_level(mh());
-    CompLevel next_level = call_event(mh(), cur_level);
-    CompLevel next_osr_level = loop_event(mh(), level);
+  if (is_compilation_enabled()) {
+    CompLevel next_osr_level = loop_event(imh(), level);
+    CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level();
     if (next_osr_level  == CompLevel_limited_profile) {
       next_osr_level = CompLevel_full_profile; // OSRs are supposed to be for very hot methods.
     }
-    next_level = MAX2(next_level,
-                      next_osr_level < CompLevel_full_optimization ? next_osr_level : cur_level);
-    bool is_compiling = false;
-    if (next_level != cur_level) {
-      compile(mh, InvocationEntryBci, next_level, THREAD);
-      is_compiling = true;
+
+    // At the very least compile the OSR version
+    if (!CompileBroker::compilation_is_in_queue(imh, bci)) {
+      // Check if there's a method like that already
+      nmethod* osr_nm = NULL;
+      if (max_osr_level >= next_osr_level) {
+        // There is an osr method already with the same
+        // or greater level, check if it has the bci we need
+        osr_nm = imh->lookup_osr_nmethod_for(bci, next_osr_level, false);
+      }
+      if (osr_nm == NULL) {
+        compile(imh, bci, next_osr_level, THREAD);
+      }
     }
 
-    // Do the OSR version
-    if (!is_compiling && next_osr_level != level) {
-      compile(mh, bci, next_osr_level, THREAD);
+    // Use loop event as an opportunity to also check if there's been
+    // enough calls.
+    CompLevel cur_level, next_level;
+    if (mh() != imh()) { // If there is an enclosing method
+      guarantee(nm != NULL, "Should have nmethod here");
+      cur_level = comp_level(mh());
+      next_level = call_event(mh(), cur_level);
+
+      if (max_osr_level == CompLevel_full_optimization) {
+        // The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts
+        bool make_not_entrant = false;
+        if (nm->is_osr_method()) {
+          // This is an osr method, just make it not entrant and recompile later if needed
+          make_not_entrant = true;
+        } else {
+          if (next_level != CompLevel_full_optimization) {
+            // next_level is not full opt, so we need to recompile the
+            // enclosing method without the inlinee
+            cur_level = CompLevel_none;
+            make_not_entrant = true;
+          }
+        }
+        if (make_not_entrant) {
+          if (PrintTieredEvents) {
+            int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci;
+            print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level);
+          }
+          nm->make_not_entrant();
+        }
+      }
+      if (!CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) {
+        // Fix up next_level if necessary to avoid deopts
+        if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) {
+          next_level = CompLevel_full_profile;
+        }
+        if (cur_level != next_level) {
+          compile(mh, InvocationEntryBci, next_level, THREAD);
+        }
+      }
+    } else {
+      cur_level = comp_level(imh());
+      next_level = call_event(imh(), cur_level);
+      if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_level != cur_level) {
+        compile(imh, InvocationEntryBci, next_level, THREAD);
+      }
     }
   }
 }
--- a/src/share/vm/runtime/advancedThresholdPolicy.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/advancedThresholdPolicy.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -211,14 +211,16 @@
   virtual void submit_compile(methodHandle mh, int bci, CompLevel level, TRAPS);
   // event() from SimpleThresholdPolicy would call these.
   virtual void method_invocation_event(methodHandle method, methodHandle inlinee,
-                                       CompLevel level, TRAPS);
+                                       CompLevel level, nmethod* nm, TRAPS);
   virtual void method_back_branch_event(methodHandle method, methodHandle inlinee,
-                                        int bci, CompLevel level, TRAPS);
+                                        int bci, CompLevel level, nmethod* nm, TRAPS);
 public:
   AdvancedThresholdPolicy() : _start_time(0) { }
   // Select task is called by CompileBroker. We should return a task or NULL.
   virtual CompileTask* select_task(CompileQueue* compile_queue);
   virtual void initialize();
+  virtual bool should_not_inline(ciEnv* env, ciMethod* callee);
+
 };
 
 #endif // TIERED
--- a/src/share/vm/runtime/compilationPolicy.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/compilationPolicy.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -306,7 +306,7 @@
   return (current >= initial + target);
 }
 
-nmethod* NonTieredCompPolicy::event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, TRAPS) {
+nmethod* NonTieredCompPolicy::event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) {
   assert(comp_level == CompLevel_none, "This should be only called from the interpreter");
   NOT_PRODUCT(trace_frequency_counter_overflow(method, branch_bci, bci));
   if (JvmtiExport::can_post_interpreter_events()) {
--- a/src/share/vm/runtime/compilationPolicy.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/compilationPolicy.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -62,7 +62,7 @@
   virtual int compiler_count(CompLevel comp_level) = 0;
   // main notification entry, return a pointer to an nmethod if the OSR is required,
   // returns NULL otherwise.
-  virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, TRAPS) = 0;
+  virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) = 0;
   // safepoint() is called at the end of the safepoint
   virtual void do_safepoint_work() = 0;
   // reprofile request
@@ -80,6 +80,7 @@
   virtual bool is_mature(methodOop method) = 0;
   // Do policy initialization
   virtual void initialize() = 0;
+  virtual bool should_not_inline(ciEnv* env, ciMethod* method) { return false; }
 };
 
 // A base class for baseline policies.
@@ -101,7 +102,7 @@
   virtual bool is_mature(methodOop method);
   virtual void initialize();
   virtual CompileTask* select_task(CompileQueue* compile_queue);
-  virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, TRAPS);
+  virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
   virtual void method_invocation_event(methodHandle m, TRAPS) = 0;
   virtual void method_back_branch_event(methodHandle m, int bci, TRAPS) = 0;
 };
--- a/src/share/vm/runtime/sharedRuntime.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/sharedRuntime.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -763,6 +763,13 @@
   throw_and_post_jvmti_exception(thread, exception);
 JRT_END
 
+JRT_ENTRY(void, SharedRuntime::throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual))
+  assert(thread == JavaThread::current() && required->is_oop() && actual->is_oop(), "bad args");
+  ResourceMark rm;
+  char* message = SharedRuntime::generate_wrong_method_type_message(thread, required, actual);
+  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_invoke_WrongMethodTypeException(), message);
+JRT_END
+
 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread,
                                                            address pc,
                                                            SharedRuntime::ImplicitExceptionKind exception_kind)
--- a/src/share/vm/runtime/sharedRuntime.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/sharedRuntime.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -185,6 +185,7 @@
   static void    throw_NullPointerException(JavaThread* thread);
   static void    throw_NullPointerException_at_call(JavaThread* thread);
   static void    throw_StackOverflowError(JavaThread* thread);
+  static void    throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual);
   static address continuation_for_implicit_exception(JavaThread* thread,
                                                      address faulting_pc,
                                                      ImplicitExceptionKind exception_kind);
--- a/src/share/vm/runtime/simpleThresholdPolicy.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/simpleThresholdPolicy.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -50,15 +50,18 @@
   case COMPILE:
     tty->print("compile");
     break;
-  case KILL:
-    tty->print("kill");
+  case REMOVE_FROM_QUEUE:
+    tty->print("remove-from-queue");
     break;
-  case UPDATE:
-    tty->print("update");
+  case UPDATE_IN_QUEUE:
+    tty->print("update-in-queue");
     break;
   case REPROFILE:
     tty->print("reprofile");
     break;
+  case MAKE_NOT_ENTRANT:
+    tty->print("make-not-entrant");
+    break;
   default:
     tty->print("unknown");
   }
@@ -68,7 +71,6 @@
   ResourceMark rm;
   char *method_name = mh->name_and_sig_as_C_string();
   tty->print("[%s", method_name);
-  // We can have an inlinee, although currently we don't generate any notifications for the inlined methods.
   if (inlinee_event) {
     char *inlinee_name = imh->name_and_sig_as_C_string();
     tty->print(" [%s]] ", inlinee_name);
@@ -170,7 +172,7 @@
 }
 
 nmethod* SimpleThresholdPolicy::event(methodHandle method, methodHandle inlinee,
-                                      int branch_bci, int bci, CompLevel comp_level, TRAPS) {
+                                      int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) {
   if (comp_level == CompLevel_none &&
       JvmtiExport::can_post_interpreter_events()) {
     assert(THREAD->is_Java_thread(), "Should be java thread");
@@ -190,12 +192,13 @@
   }
 
   if (bci == InvocationEntryBci) {
-    method_invocation_event(method, inlinee, comp_level, THREAD);
+    method_invocation_event(method, inlinee, comp_level, nm, THREAD);
   } else {
-    method_back_branch_event(method, inlinee, bci, comp_level, THREAD);
-    int highest_level = method->highest_osr_comp_level();
+    method_back_branch_event(method, inlinee, bci, comp_level, nm, THREAD);
+    // method == inlinee if the event originated in the main method
+    int highest_level = inlinee->highest_osr_comp_level();
     if (highest_level > comp_level) {
-      osr_nm = method->lookup_osr_nmethod_for(bci, highest_level, false);
+      osr_nm = inlinee->lookup_osr_nmethod_for(bci, highest_level, false);
     }
   }
   return osr_nm;
@@ -323,7 +326,8 @@
 
 // Determine if a method should be compiled with a normal entry point at a different level.
 CompLevel SimpleThresholdPolicy::call_event(methodOop method,  CompLevel cur_level) {
-  CompLevel osr_level = (CompLevel) method->highest_osr_comp_level();
+  CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(),
+                             common(&SimpleThresholdPolicy::loop_predicate, method, cur_level));
   CompLevel next_level = common(&SimpleThresholdPolicy::call_predicate, method, cur_level);
 
   // If OSR method level is greater than the regular method level, the levels should be
@@ -344,21 +348,22 @@
 
 // Determine if we should do an OSR compilation of a given method.
 CompLevel SimpleThresholdPolicy::loop_event(methodOop method, CompLevel cur_level) {
+  CompLevel next_level = common(&SimpleThresholdPolicy::loop_predicate, method, cur_level);
   if (cur_level == CompLevel_none) {
     // If there is a live OSR method that means that we deopted to the interpreter
     // for the transition.
-    CompLevel osr_level = (CompLevel)method->highest_osr_comp_level();
+    CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level);
     if (osr_level > CompLevel_none) {
       return osr_level;
     }
   }
-  return common(&SimpleThresholdPolicy::loop_predicate, method, cur_level);
+  return next_level;
 }
 
 
 // Handle the invocation event.
 void SimpleThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh,
-                                              CompLevel level, TRAPS) {
+                                              CompLevel level, nmethod* nm, TRAPS) {
   if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) {
     CompLevel next_level = call_event(mh(), level);
     if (next_level != level) {
@@ -370,7 +375,7 @@
 // Handle the back branch event. Notice that we can compile the method
 // with a regular entry from here.
 void SimpleThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh,
-                                               int bci, CompLevel level, TRAPS) {
+                                                     int bci, CompLevel level, nmethod* nm, TRAPS) {
   // If the method is already compiling, quickly bail out.
   if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, bci)) {
     // Use loop event as an opportinity to also check there's been
--- a/src/share/vm/runtime/simpleThresholdPolicy.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/simpleThresholdPolicy.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -62,7 +62,7 @@
   void set_c1_count(int x) { _c1_count = x;    }
   void set_c2_count(int x) { _c2_count = x;    }
 
-  enum EventType { CALL, LOOP, COMPILE, KILL, UPDATE, REPROFILE };
+  enum EventType { CALL, LOOP, COMPILE, REMOVE_FROM_QUEUE, UPDATE_IN_QUEUE, REPROFILE, MAKE_NOT_ENTRANT };
   void print_event(EventType type, methodHandle mh, methodHandle imh, int bci, CompLevel level);
   // Print policy-specific information if necessary
   virtual void print_specific(EventType type, methodHandle mh, methodHandle imh, int bci, CompLevel level) { }
@@ -88,9 +88,9 @@
     return CompLevel_none;
   }
   virtual void method_invocation_event(methodHandle method, methodHandle inlinee,
-                                       CompLevel level, TRAPS);
+                                       CompLevel level, nmethod* nm, TRAPS);
   virtual void method_back_branch_event(methodHandle method, methodHandle inlinee,
-                                        int bci, CompLevel level, TRAPS);
+                                        int bci, CompLevel level, nmethod* nm, TRAPS);
 public:
   SimpleThresholdPolicy() : _c1_count(0), _c2_count(0) { }
   virtual int compiler_count(CompLevel comp_level) {
@@ -101,17 +101,20 @@
   virtual void do_safepoint_work() { }
   virtual void delay_compilation(methodOop method) { }
   virtual void disable_compilation(methodOop method) { }
-  // TODO: we should honour reprofiling requests in the future. Currently reprofiling
-  // would happen but not to the extent we would ideally like.
   virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
   virtual nmethod* event(methodHandle method, methodHandle inlinee,
-                         int branch_bci, int bci, CompLevel comp_level, TRAPS);
+                         int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
   // Select task is called by CompileBroker. We should return a task or NULL.
   virtual CompileTask* select_task(CompileQueue* compile_queue);
   // Tell the runtime if we think a given method is adequately profiled.
   virtual bool is_mature(methodOop method);
   // Initialize: set compiler thread count
   virtual void initialize();
+  virtual bool should_not_inline(ciEnv* env, ciMethod* callee) {
+    return (env->comp_level() == CompLevel_limited_profile ||
+            env->comp_level() == CompLevel_full_profile) &&
+            callee->has_loops();
+  }
 };
 
 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
--- a/src/share/vm/runtime/stubRoutines.cpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/stubRoutines.cpp	Thu Jul 07 10:51:07 2011 -0700
@@ -55,6 +55,7 @@
 address StubRoutines::_throw_NullPointerException_entry         = NULL;
 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL;
 address StubRoutines::_throw_StackOverflowError_entry           = NULL;
+address StubRoutines::_throw_WrongMethodTypeException_entry     = NULL;
 address StubRoutines::_handler_for_unsafe_access_entry          = NULL;
 jint    StubRoutines::_verify_oop_count                         = 0;
 address StubRoutines::_verify_oop_subroutine_entry              = NULL;
--- a/src/share/vm/runtime/stubRoutines.hpp	Wed Jul 06 08:43:01 2011 -0700
+++ b/src/share/vm/runtime/stubRoutines.hpp	Thu Jul 07 10:51:07 2011 -0700
@@ -132,6 +132,7 @@
   static address _throw_NullPointerException_entry;
   static address _throw_NullPointerException_at_call_entry;
   static address _throw_StackOverflowError_entry;
+  static address _throw_WrongMethodTypeException_entry;
   static address _handler_for_unsafe_access_entry;
 
   static address _atomic_xchg_entry;
@@ -254,6 +255,7 @@
   static address throw_NullPointerException_entry()        { return _throw_NullPointerException_entry; }
   static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; }
   static address throw_StackOverflowError_entry()          { return _throw_StackOverflowError_entry; }
+  static address throw_WrongMethodTypeException_entry()    { return _throw_WrongMethodTypeException_entry; }
 
   // Exceptions during unsafe access - should throw Java exception rather
   // than crash.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/6478991/NullCheckTest.java	Thu Jul 07 10:51:07 2011 -0700
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 6478991
+ * @summary C1 NullCheckEliminator yields incorrect exceptions
+ *
+ * @run main/othervm -XX:CompileOnly=NullCheckTest.test,NullCheckTest.inlined  -Xcomp NullCheckTest
+ */
+
+public class NullCheckTest {
+        static class A {
+                int f;
+
+                public final void inlined(A a) {
+                        // This cast is intended to fail.
+                        B b = ((B) a);
+                }
+        }
+
+        static class B extends A {
+        }
+
+
+        private static void test(A a1, A a2) {
+                // Inlined call must do a null check on a1.
+                // However, the exlipcit NullCheck instruction is eliminated and
+                // the null check is folded into the field load below, so the
+                // exception in the inlined method is thrown before the null check
+                // and the NullPointerException is not thrown.
+                a1.inlined(a2);
+
+                int x = a1.f;
+        }
+
+        public static void main(String[] args) {
+                // load classes
+                new B();
+                try {
+                        test(null, new A());
+
+                        throw new InternalError("FAILURE: no exception");
+                } catch (NullPointerException ex) {
+                        System.out.println("CORRECT: NullPointerException");
+                } catch (ClassCastException ex) {
+                        System.out.println("FAILURE: ClassCastException");
+                        throw ex;
+                }
+        }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7044738/Test7044738.java	Thu Jul 07 10:51:07 2011 -0700
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 7044738
+ * @summary Loop unroll optimization causes incorrect result
+ *
+ * @run main/othervm -Xbatch Test7044738
+ */
+
+public class Test7044738 {
+
+  private static final int INITSIZE = 10000;
+  public int d[] = { 1, 2, 3, 4 };
+  public int i, size;
+
+  private static int iter = 5;
+
+  boolean done() { return (--iter > 0); }
+
+  public static void main(String args[]) {
+    Test7044738 t = new Test7044738();
+    t.test();
+  }
+
+  int test() {
+
+    while (done()) {
+      size = INITSIZE;
+
+      for (i = 0; i < size; i++) {
+        d[0] = d[1]; // 2
+        d[1] = d[2]; // 3
+        d[2] = d[3]; // 4
+        d[3] = d[0]; // 2
+
+        d[0] = d[1]; // 3
+        d[1] = d[2]; // 4
+        d[2] = d[3]; // 2
+        d[3] = d[0]; // 3
+
+        d[0] = d[1]; // 4
+        d[1] = d[2]; // 2
+        d[2] = d[3]; // 3
+        d[3] = d[0]; // 4
+
+        d[0] = d[1]; // 2
+        d[1] = d[2]; // 3
+        d[2] = d[3]; // 4
+        d[3] = d[0]; // 2
+
+        d[0] = d[1]; // 3
+        d[1] = d[2]; // 4
+        d[2] = d[3]; // 2
+        d[3] = d[0]; // 3
+
+        d[0] = d[1]; // 4
+        d[1] = d[2]; // 2
+        d[2] = d[3]; // 3
+        d[3] = d[0]; // 4
+
+        d[0] = d[1]; // 2
+        d[1] = d[2]; // 3
+        d[2] = d[3]; // 4
+        d[3] = d[0]; // 2
+
+        d[0] = d[1]; // 3
+        d[1] = d[2]; // 4
+        d[2] = d[3]; // 2
+        d[3] = d[0]; // 3
+      }
+
+      // try to defeat dead code elimination
+      if (d[0] == d[1]) {
+        System.out.println("test failed: iter=" + iter + "  i=" + i + " d[] = { " + d[0] + ", " + d[1] + ", " + d[2] + ", " + d[3] + " } ");
+        System.exit(97);
+      }
+    }
+    return d[3];
+  }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7046096/Test7046096.java	Thu Jul 07 10:51:07 2011 -0700
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 7046096
+ * @summary SEGV IN C2 WITH 6U25
+ *
+ * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeStringConcat Test7046096
+ */
+
+
+public class Test7046096 {
+
+  static int first = 1;
+
+  String add(String str) {
+    if (first != 0) {
+      return str + "789";
+    } else {
+      return "null";
+    }
+  }
+
+  String test(String str) {
+    for (int i=0; i < first; i++) {
+      if (i > 1)
+        return "bad";
+    }
+    return add(str+"456");
+  }
+
+  public static void main(String [] args) {
+    Test7046096 t = new Test7046096();
+    for (int i = 0; i < 11000; i++) {
+      String str = t.test("123");
+      if (!str.equals("123456789")) {
+        System.out.println("FAILED: " + str + " != \"123456789\"");
+        System.exit(97);
+      }
+    }
+  }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7052494/Test7052494.java	Thu Jul 07 10:51:07 2011 -0700
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 7052494
+ * @summary Eclipse test fails on JDK 7 b142
+ *
+ * @run main/othervm -Xbatch Test7052494
+ */
+
+
+public class Test7052494 {
+
+  static int test1(int i, int limit) {
+    int result = 0;
+    while (i++ != 0) {
+      if (result >= limit)
+        break;
+      result = i*2;
+    }
+    return result;
+  }
+
+  static int test2(int i, int limit) {
+    int result = 0;
+    while (i-- != 0) {
+      if (result <= limit)
+        break;
+      result = i*2;
+    }
+    return result;
+  }
+
+  static void test3(int i, int limit, int arr[]) {
+    while (i++ != 0) {
+      if (arr[i-1] >= limit)
+        break;
+      arr[i] = i*2;
+    }
+  }
+
+  static void test4(int i, int limit, int arr[]) {
+    while (i-- != 0) {
+      if (arr[arr.length + i + 1] <= limit)
+        break;
+      arr[arr.length + i] = i*2;
+    }
+  }
+
+  // Empty loop rolls through MAXINT if i > 0
+  static int test5(int i) {
+    int result = 0;
+    while (i++ != 0) {
+      result = i*2;
+    }
+    return result;
+  }
+
+  // Empty loop rolls through MININT if i < 0
+  static int test6(int i) {
+    int result = 0;
+    while (i-- != 0) {
+      result = i*2;
+    }
+    return result;
+  }
+
+  public static void main(String [] args) {
+    boolean failed = false;
+    int[] arr = new int[8];
+    int[] ar3 = { 0, 0, 4, 6, 8, 10, 0, 0 };
+    int[] ar4 = { 0, 0, 0, -10, -8, -6, -4, 0 };
+    for (int i = 0; i < 11000; i++) {
+      int k = test1(1, 10);
+      if (k != 10) {
+        System.out.println("FAILED: " + k + " != 10");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test2(-1, -10);
+      if (k != -10) {
+        System.out.println("FAILED: " + k + " != -10");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      java.util.Arrays.fill(arr, 0);
+      test3(1, 10, arr);
+      if (!java.util.Arrays.equals(arr,ar3)) {
+        System.out.println("FAILED: arr = { " + arr[0] + ", "
+                                              + arr[1] + ", "
+                                              + arr[2] + ", "
+                                              + arr[3] + ", "
+                                              + arr[4] + ", "
+                                              + arr[5] + ", "
+                                              + arr[6] + ", "
+                                              + arr[7] + " }");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      java.util.Arrays.fill(arr, 0);
+      test4(-1, -10, arr);
+      if (!java.util.Arrays.equals(arr,ar4)) {
+        System.out.println("FAILED: arr = { " + arr[0] + ", "
+                                              + arr[1] + ", "
+                                              + arr[2] + ", "
+                                              + arr[3] + ", "
+                                              + arr[4] + ", "
+                                              + arr[5] + ", "
+                                              + arr[6] + ", "
+                                              + arr[7] + " }");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test5(1);
+      if (k != 0) {
+        System.out.println("FAILED: " + k + " != 0");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test6(-1);
+      if (k != 0) {
+        System.out.println("FAILED: " + k + " != 0");
+        failed = true;
+        break;
+      }
+    }
+    if (failed)
+      System.exit(97);
+  }
+}