changeset 7844:ce2c731bb770

8068977: Remove unused sun.misc.Unsafe prefetch intrinsic support Reviewed-by: kvn, vlivanov
author psandoz
date Tue, 10 Feb 2015 21:32:05 +0100
parents d5c8919c43ab
children 18da5dda66d2
files src/cpu/ppc/vm/ppc.ad src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp src/cpu/sparc/vm/sparc.ad src/cpu/x86/vm/c1_LIRAssembler_x86.cpp src/cpu/x86/vm/globals_x86.hpp src/cpu/x86/vm/vm_version_x86.cpp src/cpu/x86/vm/x86_32.ad src/cpu/x86/vm/x86_64.ad src/share/vm/adlc/formssel.cpp src/share/vm/c1/c1_Canonicalizer.cpp src/share/vm/c1/c1_Canonicalizer.hpp src/share/vm/c1/c1_GraphBuilder.cpp src/share/vm/c1/c1_GraphBuilder.hpp src/share/vm/c1/c1_Instruction.hpp src/share/vm/c1/c1_InstructionPrinter.cpp src/share/vm/c1/c1_InstructionPrinter.hpp src/share/vm/c1/c1_LIR.cpp src/share/vm/c1/c1_LIR.hpp src/share/vm/c1/c1_LIRAssembler.cpp src/share/vm/c1/c1_LIRAssembler.hpp src/share/vm/c1/c1_LIRGenerator.cpp src/share/vm/c1/c1_LIRGenerator.hpp src/share/vm/c1/c1_Optimizer.cpp src/share/vm/c1/c1_RangeCheckElimination.hpp src/share/vm/c1/c1_ValueMap.hpp src/share/vm/classfile/vmSymbols.hpp src/share/vm/opto/classes.hpp src/share/vm/opto/library_call.cpp src/share/vm/opto/matcher.cpp src/share/vm/opto/memnode.hpp src/share/vm/runtime/vmStructs.cpp
diffstat 31 files changed, 31 insertions(+), 591 deletions(-) [+]
line wrap: on
line diff
--- a/src/cpu/ppc/vm/ppc.ad	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/ppc/vm/ppc.ad	Tue Feb 10 21:32:05 2015 +0100
@@ -6365,58 +6365,6 @@
 // Prefetch instructions.
 // Must be safe to execute with invalid address (cannot fault).
 
-instruct prefetchr(indirectMemory mem, iRegLsrc src) %{
-  match(PrefetchRead (AddP mem src));
-  ins_cost(MEMORY_REF_COST);
-
-  format %{ "PREFETCH $mem, 0, $src \t// Prefetch read-many" %}
-  size(4);
-  ins_encode %{
-    // TODO: PPC port $archOpcode(ppc64Opcode_dcbt);
-    __ dcbt($src$$Register, $mem$$base$$Register);
-  %}
-  ins_pipe(pipe_class_memory);
-%}
-
-instruct prefetchr_no_offset(indirectMemory mem) %{
-  match(PrefetchRead mem);
-  ins_cost(MEMORY_REF_COST);
-
-  format %{ "PREFETCH $mem" %}
-  size(4);
-  ins_encode %{
-    // TODO: PPC port $archOpcode(ppc64Opcode_dcbt);
-    __ dcbt($mem$$base$$Register);
-  %}
-  ins_pipe(pipe_class_memory);
-%}
-
-instruct prefetchw(indirectMemory mem, iRegLsrc src) %{
-  match(PrefetchWrite (AddP mem src));
-  ins_cost(MEMORY_REF_COST);
-
-  format %{ "PREFETCH $mem, 2, $src \t// Prefetch write-many (and read)" %}
-  size(4);
-  ins_encode %{
-    // TODO: PPC port $archOpcode(ppc64Opcode_dcbtst);
-    __ dcbtst($src$$Register, $mem$$base$$Register);
-  %}
-  ins_pipe(pipe_class_memory);
-%}
-
-instruct prefetchw_no_offset(indirectMemory mem) %{
-  match(PrefetchWrite mem);
-  ins_cost(MEMORY_REF_COST);
-
-  format %{ "PREFETCH $mem" %}
-  size(4);
-  ins_encode %{
-    // TODO: PPC port $archOpcode(ppc64Opcode_dcbtst);
-    __ dcbtst($mem$$base$$Register);
-  %}
-  ins_pipe(pipe_class_memory);
-%}
-
 // Special prefetch versions which use the dcbz instruction.
 instruct prefetch_alloc_zero(indirectMemory mem, iRegLsrc src) %{
   match(PrefetchAllocation (AddP mem src));
--- a/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -1436,26 +1436,6 @@
 }
 
 
-void LIR_Assembler::prefetchr(LIR_Opr src) {
-  LIR_Address* addr = src->as_address_ptr();
-  Address from_addr = as_Address(addr);
-
-  if (VM_Version::has_v9()) {
-    __ prefetch(from_addr, Assembler::severalReads);
-  }
-}
-
-
-void LIR_Assembler::prefetchw(LIR_Opr src) {
-  LIR_Address* addr = src->as_address_ptr();
-  Address from_addr = as_Address(addr);
-
-  if (VM_Version::has_v9()) {
-    __ prefetch(from_addr, Assembler::severalWritesAndPossiblyReads);
-  }
-}
-
-
 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) {
   Address addr;
   if (src->is_single_word()) {
--- a/src/cpu/sparc/vm/sparc.ad	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/sparc/vm/sparc.ad	Tue Feb 10 21:32:05 2015 +0100
@@ -889,8 +889,6 @@
           !(n->ideal_Opcode()==Op_LoadD_unaligned && ld_op==Op_LoadF) &&
           !(n->ideal_Opcode()==Op_ConvI2F   && ld_op==Op_LoadF) &&
           !(n->ideal_Opcode()==Op_ConvI2D   && ld_op==Op_LoadF) &&
-          !(n->ideal_Opcode()==Op_PrefetchRead  && ld_op==Op_LoadI) &&
-          !(n->ideal_Opcode()==Op_PrefetchWrite && ld_op==Op_LoadI) &&
           !(n->ideal_Opcode()==Op_PrefetchAllocation && ld_op==Op_LoadI) &&
           !(n->ideal_Opcode()==Op_LoadVector && ld_op==Op_LoadD) &&
           !(n->rule() == loadUB_rule)) {
@@ -6316,33 +6314,9 @@
   ins_pipe(loadConFD);
 %}
 
-// Prefetch instructions.
+// Prefetch instructions for allocation.
 // Must be safe to execute with invalid address (cannot fault).
 
-instruct prefetchr( memory mem ) %{
-  match( PrefetchRead mem );
-  ins_cost(MEMORY_REF_COST);
-  size(4);
-
-  format %{ "PREFETCH $mem,0\t! Prefetch read-many" %}
-  opcode(Assembler::prefetch_op3);
-  ins_encode( form3_mem_prefetch_read( mem ) );
-  ins_pipe(iload_mem);
-%}
-
-instruct prefetchw( memory mem ) %{
-  match( PrefetchWrite mem );
-  ins_cost(MEMORY_REF_COST);
-  size(4);
-
-  format %{ "PREFETCH $mem,2\t! Prefetch write-many (and read)" %}
-  opcode(Assembler::prefetch_op3);
-  ins_encode( form3_mem_prefetch_write( mem ) );
-  ins_pipe(iload_mem);
-%}
-
-// Prefetch instructions for allocation.
-
 instruct prefetchAlloc( memory mem ) %{
   predicate(AllocatePrefetchInstr == 0);
   match( PrefetchAllocation mem );
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -1398,50 +1398,6 @@
 }
 
 
-void LIR_Assembler::prefetchr(LIR_Opr src) {
-  LIR_Address* addr = src->as_address_ptr();
-  Address from_addr = as_Address(addr);
-
-  if (VM_Version::supports_sse()) {
-    switch (ReadPrefetchInstr) {
-      case 0:
-        __ prefetchnta(from_addr); break;
-      case 1:
-        __ prefetcht0(from_addr); break;
-      case 2:
-        __ prefetcht2(from_addr); break;
-      default:
-        ShouldNotReachHere(); break;
-    }
-  } else if (VM_Version::supports_3dnow_prefetch()) {
-    __ prefetchr(from_addr);
-  }
-}
-
-
-void LIR_Assembler::prefetchw(LIR_Opr src) {
-  LIR_Address* addr = src->as_address_ptr();
-  Address from_addr = as_Address(addr);
-
-  if (VM_Version::supports_sse()) {
-    switch (AllocatePrefetchInstr) {
-      case 0:
-        __ prefetchnta(from_addr); break;
-      case 1:
-        __ prefetcht0(from_addr); break;
-      case 2:
-        __ prefetcht2(from_addr); break;
-      case 3:
-        __ prefetchw(from_addr); break;
-      default:
-        ShouldNotReachHere(); break;
-    }
-  } else if (VM_Version::supports_3dnow_prefetch()) {
-    __ prefetchw(from_addr);
-  }
-}
-
-
 NEEDS_CLEANUP; // This could be static?
 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const {
   int elem_size = type2aelembytes(type);
--- a/src/cpu/x86/vm/globals_x86.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/x86/vm/globals_x86.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -90,9 +90,6 @@
   product(intx, FenceInstruction, 0,                                        \
           "(Unsafe,Unstable) Experimental")                                 \
                                                                             \
-  product(intx,  ReadPrefetchInstr, 0,                                      \
-          "Prefetch instruction to prefetch ahead")                         \
-                                                                            \
   product(bool, UseStoreImmI16, true,                                       \
           "Use store immediate 16-bits value instruction on x86")           \
                                                                             \
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -924,15 +924,9 @@
   }
 #endif // COMPILER2
 
-  assert(0 <= ReadPrefetchInstr && ReadPrefetchInstr <= 3, "invalid value");
   assert(0 <= AllocatePrefetchInstr && AllocatePrefetchInstr <= 3, "invalid value");
 
   // set valid Prefetch instruction
-  if( ReadPrefetchInstr < 0 ) ReadPrefetchInstr = 0;
-  if( ReadPrefetchInstr > 3 ) ReadPrefetchInstr = 3;
-  if( ReadPrefetchInstr == 3 && !supports_3dnow_prefetch() ) ReadPrefetchInstr = 0;
-  if( !supports_sse() && supports_3dnow_prefetch() ) ReadPrefetchInstr = 3;
-
   if( AllocatePrefetchInstr < 0 ) AllocatePrefetchInstr = 0;
   if( AllocatePrefetchInstr > 3 ) AllocatePrefetchInstr = 3;
   if( AllocatePrefetchInstr == 3 && !supports_3dnow_prefetch() ) AllocatePrefetchInstr=0;
--- a/src/cpu/x86/vm/x86_32.ad	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/x86/vm/x86_32.ad	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+// Copyright (c) 1997, 2015, 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
@@ -6061,103 +6061,9 @@
   ins_pipe( fpu_reg_mem );
 %}
 
-// Prefetch instructions.
+// Prefetch instructions for allocation.
 // Must be safe to execute with invalid address (cannot fault).
 
-instruct prefetchr0( memory mem ) %{
-  predicate(UseSSE==0 && !VM_Version::supports_3dnow_prefetch());
-  match(PrefetchRead mem);
-  ins_cost(0);
-  size(0);
-  format %{ "PREFETCHR (non-SSE is empty encoding)" %}
-  ins_encode();
-  ins_pipe(empty);
-%}
-
-instruct prefetchr( memory mem ) %{
-  predicate(UseSSE==0 && VM_Version::supports_3dnow_prefetch() || ReadPrefetchInstr==3);
-  match(PrefetchRead mem);
-  ins_cost(100);
-
-  format %{ "PREFETCHR $mem\t! Prefetch into level 1 cache for read" %}
-  ins_encode %{
-    __ prefetchr($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrNTA( memory mem ) %{
-  predicate(UseSSE>=1 && ReadPrefetchInstr==0);
-  match(PrefetchRead mem);
-  ins_cost(100);
-
-  format %{ "PREFETCHNTA $mem\t! Prefetch into non-temporal cache for read" %}
-  ins_encode %{
-    __ prefetchnta($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrT0( memory mem ) %{
-  predicate(UseSSE>=1 && ReadPrefetchInstr==1);
-  match(PrefetchRead mem);
-  ins_cost(100);
-
-  format %{ "PREFETCHT0 $mem\t! Prefetch into L1 and L2 caches for read" %}
-  ins_encode %{
-    __ prefetcht0($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrT2( memory mem ) %{
-  predicate(UseSSE>=1 && ReadPrefetchInstr==2);
-  match(PrefetchRead mem);
-  ins_cost(100);
-
-  format %{ "PREFETCHT2 $mem\t! Prefetch into L2 cache for read" %}
-  ins_encode %{
-    __ prefetcht2($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchw0( memory mem ) %{
-  predicate(UseSSE==0 && !VM_Version::supports_3dnow_prefetch());
-  match(PrefetchWrite mem);
-  ins_cost(0);
-  size(0);
-  format %{ "Prefetch (non-SSE is empty encoding)" %}
-  ins_encode();
-  ins_pipe(empty);
-%}
-
-instruct prefetchw( memory mem ) %{
-  predicate(UseSSE==0 && VM_Version::supports_3dnow_prefetch());
-  match( PrefetchWrite mem );
-  ins_cost(100);
-
-  format %{ "PREFETCHW $mem\t! Prefetch into L1 cache and mark modified" %}
-  ins_encode %{
-    __ prefetchw($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchwNTA( memory mem ) %{
-  predicate(UseSSE>=1);
-  match(PrefetchWrite mem);
-  ins_cost(100);
-
-  format %{ "PREFETCHNTA $mem\t! Prefetch into non-temporal cache for write" %}
-  ins_encode %{
-    __ prefetchnta($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-// Prefetch instructions for allocation.
-
 instruct prefetchAlloc0( memory mem ) %{
   predicate(UseSSE==0 && AllocatePrefetchInstr!=3);
   match(PrefetchAllocation mem);
--- a/src/cpu/x86/vm/x86_64.ad	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/cpu/x86/vm/x86_64.ad	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+// Copyright (c) 2003, 2015, 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
@@ -5319,70 +5319,9 @@
   ins_pipe(pipe_slow); // XXX
 %}
 
-// Prefetch instructions.
+// Prefetch instructions for allocation.
 // Must be safe to execute with invalid address (cannot fault).
 
-instruct prefetchr( memory mem ) %{
-  predicate(ReadPrefetchInstr==3);
-  match(PrefetchRead mem);
-  ins_cost(125);
-
-  format %{ "PREFETCHR $mem\t# Prefetch into level 1 cache" %}
-  ins_encode %{
-    __ prefetchr($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrNTA( memory mem ) %{
-  predicate(ReadPrefetchInstr==0);
-  match(PrefetchRead mem);
-  ins_cost(125);
-
-  format %{ "PREFETCHNTA $mem\t# Prefetch into non-temporal cache for read" %}
-  ins_encode %{
-    __ prefetchnta($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrT0( memory mem ) %{
-  predicate(ReadPrefetchInstr==1);
-  match(PrefetchRead mem);
-  ins_cost(125);
-
-  format %{ "PREFETCHT0 $mem\t# prefetch into L1 and L2 caches for read" %}
-  ins_encode %{
-    __ prefetcht0($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchrT2( memory mem ) %{
-  predicate(ReadPrefetchInstr==2);
-  match(PrefetchRead mem);
-  ins_cost(125);
-
-  format %{ "PREFETCHT2 $mem\t# prefetch into L2 caches for read" %}
-  ins_encode %{
-    __ prefetcht2($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-instruct prefetchwNTA( memory mem ) %{
-  match(PrefetchWrite mem);
-  ins_cost(125);
-
-  format %{ "PREFETCHNTA $mem\t# Prefetch to non-temporal cache for write" %}
-  ins_encode %{
-    __ prefetchnta($mem$$Address);
-  %}
-  ins_pipe(ialu_mem);
-%}
-
-// Prefetch instructions for allocation.
-
 instruct prefetchAlloc( memory mem ) %{
   predicate(AllocatePrefetchInstr==3);
   match(PrefetchAllocation mem);
--- a/src/share/vm/adlc/formssel.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/adlc/formssel.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2015, 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
@@ -3489,9 +3489,7 @@
     "GetAndAddL", "GetAndSetL", "GetAndSetN",
   };
   int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*);
-  if( strcmp(_opType,"PrefetchRead")==0 ||
-      strcmp(_opType,"PrefetchWrite")==0 ||
-      strcmp(_opType,"PrefetchAllocation")==0 )
+  if( strcmp(_opType,"PrefetchAllocation")==0 )
     return 1;
   if( _lChild ) {
     const char *opType = _lChild->_opType;
--- a/src/share/vm/c1/c1_Canonicalizer.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_Canonicalizer.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -964,8 +964,6 @@
 void Canonicalizer::do_UnsafeGetObject(UnsafeGetObject* x) {}
 void Canonicalizer::do_UnsafePutObject(UnsafePutObject* x) {}
 void Canonicalizer::do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) {}
-void Canonicalizer::do_UnsafePrefetchRead (UnsafePrefetchRead*  x) {}
-void Canonicalizer::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {}
 void Canonicalizer::do_ProfileCall(ProfileCall* x) {}
 void Canonicalizer::do_ProfileReturnType(ProfileReturnType* x) {}
 void Canonicalizer::do_ProfileInvoke(ProfileInvoke* x) {}
--- a/src/share/vm/c1/c1_Canonicalizer.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_Canonicalizer.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -101,8 +101,6 @@
   virtual void do_UnsafeGetObject(UnsafeGetObject* x);
   virtual void do_UnsafePutObject(UnsafePutObject* x);
   virtual void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x);
-  virtual void do_UnsafePrefetchRead (UnsafePrefetchRead*  x);
-  virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x);
   virtual void do_ProfileCall    (ProfileCall*     x);
   virtual void do_ProfileReturnType (ProfileReturnType*  x);
   virtual void do_ProfileInvoke  (ProfileInvoke*   x);
--- a/src/share/vm/c1/c1_GraphBuilder.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_GraphBuilder.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -3497,11 +3497,6 @@
     case vmIntrinsics::_putFloat_raw  : return append_unsafe_put_raw(callee, T_FLOAT);
     case vmIntrinsics::_putDouble_raw : return append_unsafe_put_raw(callee, T_DOUBLE);
 
-    case vmIntrinsics::_prefetchRead        : return append_unsafe_prefetch(callee, false, false);
-    case vmIntrinsics::_prefetchWrite       : return append_unsafe_prefetch(callee, false, true);
-    case vmIntrinsics::_prefetchReadStatic  : return append_unsafe_prefetch(callee, true,  false);
-    case vmIntrinsics::_prefetchWriteStatic : return append_unsafe_prefetch(callee, true,  true);
-
     case vmIntrinsics::_checkIndex    :
       if (!InlineNIOCheckIndex) return false;
       preserves_state = true;
@@ -4258,27 +4253,6 @@
 }
 
 
-bool GraphBuilder::append_unsafe_prefetch(ciMethod* callee, bool is_static, bool is_store) {
-  if (InlineUnsafeOps) {
-    Values* args = state()->pop_arguments(callee->arg_size());
-    int obj_arg_index = 1; // Assume non-static case
-    if (is_static) {
-      obj_arg_index = 0;
-    } else {
-      null_check(args->at(0));
-    }
-    Instruction* offset = args->at(obj_arg_index + 1);
-#ifndef _LP64
-    offset = append(new Convert(Bytecodes::_l2i, offset, as_ValueType(T_INT)));
-#endif
-    Instruction* op = is_store ? append(new UnsafePrefetchWrite(args->at(obj_arg_index), offset))
-                               : append(new UnsafePrefetchRead (args->at(obj_arg_index), offset));
-    compilation()->set_has_unsafe_access(true);
-  }
-  return InlineUnsafeOps;
-}
-
-
 void GraphBuilder::append_unsafe_CAS(ciMethod* callee) {
   ValueStack* state_before = copy_state_for_exception();
   ValueType* result_type = as_ValueType(callee->return_type());
--- a/src/share/vm/c1/c1_GraphBuilder.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_GraphBuilder.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -368,7 +368,6 @@
   bool append_unsafe_put_obj(ciMethod* callee, BasicType t, bool is_volatile);
   bool append_unsafe_get_raw(ciMethod* callee, BasicType t);
   bool append_unsafe_put_raw(ciMethod* callee, BasicType t);
-  bool append_unsafe_prefetch(ciMethod* callee, bool is_store, bool is_static);
   void append_unsafe_CAS(ciMethod* callee);
   bool append_unsafe_get_and_set_obj(ciMethod* callee, bool is_add);
 
--- a/src/share/vm/c1/c1_Instruction.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_Instruction.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -103,9 +103,6 @@
 class       UnsafeGetObject;
 class       UnsafePutObject;
 class         UnsafeGetAndSetObject;
-class       UnsafePrefetch;
-class         UnsafePrefetchRead;
-class         UnsafePrefetchWrite;
 class   ProfileCall;
 class   ProfileReturnType;
 class   ProfileInvoke;
@@ -209,8 +206,6 @@
   virtual void do_UnsafeGetObject(UnsafeGetObject* x) = 0;
   virtual void do_UnsafePutObject(UnsafePutObject* x) = 0;
   virtual void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) = 0;
-  virtual void do_UnsafePrefetchRead (UnsafePrefetchRead*  x) = 0;
-  virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) = 0;
   virtual void do_ProfileCall    (ProfileCall*     x) = 0;
   virtual void do_ProfileReturnType (ProfileReturnType*  x) = 0;
   virtual void do_ProfileInvoke  (ProfileInvoke*   x) = 0;
@@ -2442,34 +2437,6 @@
                                                    f->visit(&_value); }
 };
 
-BASE(UnsafePrefetch, UnsafeObjectOp)
- public:
-  UnsafePrefetch(Value object, Value offset)
-  : UnsafeObjectOp(T_VOID, object, offset, false, false)
-  {
-  }
-};
-
-
-LEAF(UnsafePrefetchRead, UnsafePrefetch)
- public:
-  UnsafePrefetchRead(Value object, Value offset)
-  : UnsafePrefetch(object, offset)
-  {
-    ASSERT_VALUES
-  }
-};
-
-
-LEAF(UnsafePrefetchWrite, UnsafePrefetch)
- public:
-  UnsafePrefetchWrite(Value object, Value offset)
-  : UnsafePrefetch(object, offset)
-  {
-    ASSERT_VALUES
-  }
-};
-
 LEAF(ProfileCall, Instruction)
  private:
   ciMethod*        _method;
--- a/src/share/vm/c1/c1_InstructionPrinter.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_InstructionPrinter.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -853,11 +853,6 @@
   output()->put(')');
 }
 
-void InstructionPrinter::do_UnsafePrefetchRead(UnsafePrefetchRead* x) {
-  print_unsafe_object_op(x, "UnsafePrefetchRead");
-  output()->put(')');
-}
-
 void InstructionPrinter::do_RangeCheckPredicate(RangeCheckPredicate* x) {
 
   if (x->x() != NULL && x->y() != NULL) {
@@ -880,11 +875,6 @@
 }
 #endif
 
-void InstructionPrinter::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {
-  print_unsafe_object_op(x, "UnsafePrefetchWrite");
-  output()->put(')');
-}
-
 void InstructionPrinter::do_ProfileCall(ProfileCall* x) {
   output()->print("profile ");
   print_value(x->recv());
--- a/src/share/vm/c1/c1_InstructionPrinter.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_InstructionPrinter.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -129,8 +129,6 @@
   virtual void do_UnsafeGetObject(UnsafeGetObject* x);
   virtual void do_UnsafePutObject(UnsafePutObject* x);
   virtual void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x);
-  virtual void do_UnsafePrefetchRead (UnsafePrefetchRead*  x);
-  virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x);
   virtual void do_ProfileCall    (ProfileCall*     x);
   virtual void do_ProfileReturnType (ProfileReturnType*  x);
   virtual void do_ProfileInvoke  (ProfileInvoke*   x);
--- a/src/share/vm/c1/c1_LIR.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIR.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -527,8 +527,6 @@
     case lir_move:           // input and result always valid, may have info
     case lir_pack64:         // input and result always valid
     case lir_unpack64:       // input and result always valid
-    case lir_prefetchr:      // input always valid, result and info always invalid
-    case lir_prefetchw:      // input always valid, result and info always invalid
     {
       assert(op->as_Op1() != NULL, "must be");
       LIR_Op1* op1 = (LIR_Op1*)op;
@@ -1266,13 +1264,6 @@
 }
 
 
-void LIR_List::prefetch(LIR_Address* addr, bool is_store) {
-  append(new LIR_Op1(
-            is_store ? lir_prefetchw : lir_prefetchr,
-            LIR_OprFact::address(addr)));
-}
-
-
 void LIR_List::store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code) {
   append(new LIR_Op1(
             lir_move,
--- a/src/share/vm/c1/c1_LIR.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIR.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -925,8 +925,6 @@
       , lir_branch
       , lir_cond_float_branch
       , lir_move
-      , lir_prefetchr
-      , lir_prefetchw
       , lir_convert
       , lir_alloc_object
       , lir_monaddr
@@ -2212,8 +2210,6 @@
 
   void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
 
-  void prefetch(LIR_Address* addr, bool is_store);
-
   void store_mem_int(jint v,    LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
   void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
   void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
--- a/src/share/vm/c1/c1_LIRAssembler.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIRAssembler.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -503,14 +503,6 @@
       }
       break;
 
-    case lir_prefetchr:
-      prefetchr(op->in_opr());
-      break;
-
-    case lir_prefetchw:
-      prefetchw(op->in_opr());
-      break;
-
     case lir_roundfp: {
       LIR_OpRoundFP* round_op = op->as_OpRoundFP();
       roundfp_op(round_op->in_opr(), round_op->tmp(), round_op->result_opr(), round_op->pop_fpu_stack());
--- a/src/share/vm/c1/c1_LIRAssembler.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIRAssembler.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -182,9 +182,6 @@
                    LIR_PatchCode patch_code,
                    CodeEmitInfo* info, bool wide, bool unaligned);
 
-  void prefetchr  (LIR_Opr src);
-  void prefetchw  (LIR_Opr src);
-
   void shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp);
   void shift_op(LIR_Code code, LIR_Opr left, jint  count, LIR_Opr dest);
 
--- a/src/share/vm/c1/c1_LIRGenerator.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIRGenerator.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2015, 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
@@ -2385,35 +2385,6 @@
 }
 
 
-void LIRGenerator::do_UnsafePrefetch(UnsafePrefetch* x, bool is_store) {
-  LIRItem src(x->object(), this);
-  LIRItem off(x->offset(), this);
-
-  src.load_item();
-  if (off.is_constant() && can_inline_as_constant(x->offset())) {
-    // let it be a constant
-    off.dont_load_item();
-  } else {
-    off.load_item();
-  }
-
-  set_no_result(x);
-
-  LIR_Address* addr = generate_address(src.result(), off.result(), 0, 0, T_BYTE);
-  __ prefetch(addr, is_store);
-}
-
-
-void LIRGenerator::do_UnsafePrefetchRead(UnsafePrefetchRead* x) {
-  do_UnsafePrefetch(x, false);
-}
-
-
-void LIRGenerator::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {
-  do_UnsafePrefetch(x, true);
-}
-
-
 void LIRGenerator::do_SwitchRanges(SwitchRangeArray* x, LIR_Opr value, BlockBegin* default_sux) {
   int lng = x->length();
 
--- a/src/share/vm/c1/c1_LIRGenerator.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_LIRGenerator.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2015, 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
@@ -251,8 +251,6 @@
   void do_Reference_get(Intrinsic* x);
   void do_update_CRC32(Intrinsic* x);
 
-  void do_UnsafePrefetch(UnsafePrefetch* x, bool is_store);
-
   LIR_Opr call_runtime(BasicTypeArray* signature, LIRItemList* args, address entry, ValueType* result_type, CodeEmitInfo* info);
   LIR_Opr call_runtime(BasicTypeArray* signature, LIR_OprList* args, address entry, ValueType* result_type, CodeEmitInfo* info);
 
@@ -539,8 +537,6 @@
   virtual void do_UnsafeGetObject(UnsafeGetObject* x);
   virtual void do_UnsafePutObject(UnsafePutObject* x);
   virtual void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x);
-  virtual void do_UnsafePrefetchRead (UnsafePrefetchRead*  x);
-  virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x);
   virtual void do_ProfileCall    (ProfileCall*     x);
   virtual void do_ProfileReturnType (ProfileReturnType* x);
   virtual void do_ProfileInvoke  (ProfileInvoke*   x);
--- a/src/share/vm/c1/c1_Optimizer.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_Optimizer.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -528,8 +528,6 @@
   void do_UnsafeGetObject(UnsafeGetObject* x);
   void do_UnsafePutObject(UnsafePutObject* x);
   void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x);
-  void do_UnsafePrefetchRead (UnsafePrefetchRead*  x);
-  void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x);
   void do_ProfileCall    (ProfileCall*     x);
   void do_ProfileReturnType (ProfileReturnType*  x);
   void do_ProfileInvoke  (ProfileInvoke*   x);
@@ -716,8 +714,6 @@
 void NullCheckVisitor::do_UnsafeGetObject(UnsafeGetObject* x) {}
 void NullCheckVisitor::do_UnsafePutObject(UnsafePutObject* x) {}
 void NullCheckVisitor::do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) {}
-void NullCheckVisitor::do_UnsafePrefetchRead (UnsafePrefetchRead*  x) {}
-void NullCheckVisitor::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {}
 void NullCheckVisitor::do_ProfileCall    (ProfileCall*     x) { nce()->clear_last_explicit_null_check();
                                                                 nce()->handle_ProfileCall(x); }
 void NullCheckVisitor::do_ProfileReturnType (ProfileReturnType* x) { nce()->handle_ProfileReturnType(x); }
--- a/src/share/vm/c1/c1_RangeCheckElimination.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_RangeCheckElimination.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2015, 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
@@ -159,8 +159,6 @@
     void do_UnsafeGetRaw   (UnsafeGetRaw*    x) { /* nothing to do */ };
     void do_UnsafeGetObject(UnsafeGetObject* x) { /* nothing to do */ };
     void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) { /* nothing to do */ };
-    void do_UnsafePrefetchRead (UnsafePrefetchRead*  x) { /* nothing to do */ };
-    void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { /* nothing to do */ };
     void do_ProfileCall    (ProfileCall*     x) { /* nothing to do */ };
     void do_ProfileReturnType (ProfileReturnType*  x) { /* nothing to do */ };
     void do_ProfileInvoke  (ProfileInvoke*   x) { /* nothing to do */ };
--- a/src/share/vm/c1/c1_ValueMap.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/c1/c1_ValueMap.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, 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
@@ -200,8 +200,6 @@
   void do_RoundFP        (RoundFP*         x) { /* nothing to do */ }
   void do_UnsafeGetRaw   (UnsafeGetRaw*    x) { /* nothing to do */ }
   void do_UnsafeGetObject(UnsafeGetObject* x) { /* nothing to do */ }
-  void do_UnsafePrefetchRead (UnsafePrefetchRead*  x) { /* nothing to do */ }
-  void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) { /* nothing to do */ }
   void do_ProfileCall    (ProfileCall*     x) { /* nothing to do */ }
   void do_ProfileReturnType (ProfileReturnType*  x) { /* nothing to do */ }
   void do_ProfileInvoke  (ProfileInvoke*   x) { /* nothing to do */ };
--- a/src/share/vm/classfile/vmSymbols.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/classfile/vmSymbols.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -1017,18 +1017,6 @@
   do_intrinsic(_getAndSetObject,          sun_misc_Unsafe,        getAndSetObject_name, getAndSetObject_signature,  F_R)\
    do_name(     getAndSetObject_name,                             "getAndSetObject")                                    \
    do_signature(getAndSetObject_signature,                        "(Ljava/lang/Object;JLjava/lang/Object;)Ljava/lang/Object;" ) \
-                                                                                                                        \
-  /* prefetch_signature is shared by all prefetch variants */                                                           \
-  do_signature( prefetch_signature,        "(Ljava/lang/Object;J)V")                                                    \
-                                                                                                                        \
-  do_intrinsic(_prefetchRead,             sun_misc_Unsafe,        prefetchRead_name, prefetch_signature,         F_RN)  \
-   do_name(     prefetchRead_name,                               "prefetchRead")                                        \
-  do_intrinsic(_prefetchWrite,            sun_misc_Unsafe,        prefetchWrite_name, prefetch_signature,        F_RN)  \
-   do_name(     prefetchWrite_name,                              "prefetchWrite")                                       \
-  do_intrinsic(_prefetchReadStatic,       sun_misc_Unsafe,        prefetchReadStatic_name, prefetch_signature,   F_SN)  \
-   do_name(     prefetchReadStatic_name,                         "prefetchReadStatic")                                  \
-  do_intrinsic(_prefetchWriteStatic,      sun_misc_Unsafe,        prefetchWriteStatic_name, prefetch_signature,  F_SN)  \
-   do_name(     prefetchWriteStatic_name,                        "prefetchWriteStatic")                                 \
     /*== LAST_COMPILER_INLINE*/                                                                                         \
     /*the compiler does have special inlining code for these; bytecode inline is just fine */                           \
                                                                                                                         \
@@ -1203,7 +1191,7 @@
     #undef VM_INTRINSIC_ENUM
 
     ID_LIMIT,
-    LAST_COMPILER_INLINE = _prefetchWriteStatic,
+    LAST_COMPILER_INLINE = _getAndSetObject,
     FIRST_MH_SIG_POLY    = _invokeGeneric,
     FIRST_MH_STATIC      = _linkToVirtual,
     LAST_MH_SIG_POLY     = _linkToInterface,
--- a/src/share/vm/opto/classes.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/opto/classes.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -216,8 +216,6 @@
 macro(PopCountL)
 macro(PowD)
 macro(PrefetchAllocation)
-macro(PrefetchRead)
-macro(PrefetchWrite)
 macro(Proj)
 macro(RShiftI)
 macro(RShiftL)
--- a/src/share/vm/opto/library_call.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/opto/library_call.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -232,7 +232,6 @@
   // Unsafe.getObject should be recorded in an SATB log buffer.
   void insert_pre_barrier(Node* base_oop, Node* offset, Node* pre_val, bool need_mem_bar);
   bool inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile);
-  bool inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static);
   static bool klass_needs_init_guard(Node* kls);
   bool inline_unsafe_allocate();
   bool inline_unsafe_copyMemory();
@@ -796,11 +795,6 @@
   case vmIntrinsics::_putFloatVolatile:         return inline_unsafe_access(!is_native_ptr,  is_store, T_FLOAT,    is_volatile);
   case vmIntrinsics::_putDoubleVolatile:        return inline_unsafe_access(!is_native_ptr,  is_store, T_DOUBLE,   is_volatile);
 
-  case vmIntrinsics::_prefetchRead:             return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static);
-  case vmIntrinsics::_prefetchWrite:            return inline_unsafe_prefetch(!is_native_ptr,  is_store, !is_static);
-  case vmIntrinsics::_prefetchReadStatic:       return inline_unsafe_prefetch(!is_native_ptr, !is_store,  is_static);
-  case vmIntrinsics::_prefetchWriteStatic:      return inline_unsafe_prefetch(!is_native_ptr,  is_store,  is_static);
-
   case vmIntrinsics::_compareAndSwapObject:     return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg);
   case vmIntrinsics::_compareAndSwapInt:        return inline_unsafe_load_store(T_INT,    LS_cmpxchg);
   case vmIntrinsics::_compareAndSwapLong:       return inline_unsafe_load_store(T_LONG,   LS_cmpxchg);
@@ -2506,7 +2500,7 @@
 
   Node* receiver = argument(0);  // type: oop
 
-  // Build address expression.  See the code in inline_unsafe_prefetch.
+  // Build address expression.
   Node* adr;
   Node* heap_base_oop = top();
   Node* offset = top();
@@ -2695,73 +2689,6 @@
   return true;
 }
 
-//----------------------------inline_unsafe_prefetch----------------------------
-
-bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) {
-#ifndef PRODUCT
-  {
-    ResourceMark rm;
-    // Check the signatures.
-    ciSignature* sig = callee()->signature();
-#ifdef ASSERT
-    // Object getObject(Object base, int/long offset), etc.
-    BasicType rtype = sig->return_type()->basic_type();
-    if (!is_native_ptr) {
-      assert(sig->count() == 2, "oop prefetch has 2 arguments");
-      assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object");
-      assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct");
-    } else {
-      assert(sig->count() == 1, "native prefetch has 1 argument");
-      assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long");
-    }
-#endif // ASSERT
-  }
-#endif // !PRODUCT
-
-  C->set_has_unsafe_access(true);  // Mark eventual nmethod as "unsafe".
-
-  const int idx = is_static ? 0 : 1;
-  if (!is_static) {
-    null_check_receiver();
-    if (stopped()) {
-      return true;
-    }
-  }
-
-  // Build address expression.  See the code in inline_unsafe_access.
-  Node *adr;
-  if (!is_native_ptr) {
-    // The base is either a Java object or a value produced by Unsafe.staticFieldBase
-    Node* base   = argument(idx + 0);  // type: oop
-    // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset
-    Node* offset = argument(idx + 1);  // type: long
-    // We currently rely on the cookies produced by Unsafe.xxxFieldOffset
-    // to be plain byte offsets, which are also the same as those accepted
-    // by oopDesc::field_base.
-    assert(Unsafe_field_offset_to_byte_offset(11) == 11,
-           "fieldOffset must be byte-scaled");
-    // 32-bit machines ignore the high half!
-    offset = ConvL2X(offset);
-    adr = make_unsafe_address(base, offset);
-  } else {
-    Node* ptr = argument(idx + 0);  // type: long
-    ptr = ConvL2X(ptr);  // adjust Java long to machine word
-    adr = make_unsafe_address(NULL, ptr);
-  }
-
-  // Generate the read or write prefetch
-  Node *prefetch;
-  if (is_store) {
-    prefetch = new PrefetchWriteNode(i_o(), adr);
-  } else {
-    prefetch = new PrefetchReadNode(i_o(), adr);
-  }
-  prefetch->init_req(0, control());
-  set_i_o(_gvn.transform(prefetch));
-
-  return true;
-}
-
 //----------------------------inline_unsafe_load_store----------------------------
 // This method serves a couple of different customers (depending on LoadStoreKind):
 //
--- a/src/share/vm/opto/matcher.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/opto/matcher.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -884,8 +884,6 @@
   // %%% Kludgery.  Instead, fix ideal adr_type methods for all these cases:
   if (nidx == Compile::AliasIdxTop && midx == Compile::AliasIdxRaw) {
     switch (n->Opcode()) {
-    case Op_PrefetchRead:
-    case Op_PrefetchWrite:
     case Op_PrefetchAllocation:
       nidx = Compile::AliasIdxRaw;
       nat = TypeRawPtr::BOTTOM;
--- a/src/share/vm/opto/memnode.hpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/opto/memnode.hpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -1376,26 +1376,6 @@
 
 //------------------------------Prefetch---------------------------------------
 
-// Non-faulting prefetch load.  Prefetch for many reads.
-class PrefetchReadNode : public Node {
-public:
-  PrefetchReadNode(Node *abio, Node *adr) : Node(0,abio,adr) {}
-  virtual int Opcode() const;
-  virtual uint ideal_reg() const { return NotAMachineReg; }
-  virtual uint match_edge(uint idx) const { return idx==2; }
-  virtual const Type *bottom_type() const { return Type::ABIO; }
-};
-
-// Non-faulting prefetch load.  Prefetch for many reads & many writes.
-class PrefetchWriteNode : public Node {
-public:
-  PrefetchWriteNode(Node *abio, Node *adr) : Node(0,abio,adr) {}
-  virtual int Opcode() const;
-  virtual uint ideal_reg() const { return NotAMachineReg; }
-  virtual uint match_edge(uint idx) const { return idx==2; }
-  virtual const Type *bottom_type() const { return Type::ABIO; }
-};
-
 // Allocation prefetch which may fault, TLAB size have to be adjusted.
 class PrefetchAllocationNode : public Node {
 public:
--- a/src/share/vm/runtime/vmStructs.cpp	Tue Feb 10 16:53:00 2015 +0000
+++ b/src/share/vm/runtime/vmStructs.cpp	Tue Feb 10 21:32:05 2015 +0100
@@ -1920,8 +1920,6 @@
   declare_c2_type(CompareAndSwapINode, LoadStoreNode)                     \
   declare_c2_type(CompareAndSwapPNode, LoadStoreNode)                     \
   declare_c2_type(CompareAndSwapNNode, LoadStoreNode)                     \
-  declare_c2_type(PrefetchReadNode, Node)                                 \
-  declare_c2_type(PrefetchWriteNode, Node)                                \
   declare_c2_type(MulNode, Node)                                          \
   declare_c2_type(MulINode, MulNode)                                      \
   declare_c2_type(MulLNode, MulNode)                                      \