Cache IC handlers on the prototype's map if possible

src/x64/ic-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/codegen.h"
 #include "src/ic-inl.h"
@@ skipping 892 matching lines @@
 
 
 void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   // The return address is on the stack.
   Register receiver = ReceiverRegister();
   Register name = NameRegister();
   ASSERT(receiver.is(rdx));
   ASSERT(name.is(rcx));
 
   // Probe the stub cache.
-  Code::Flags flags = Code::ComputeHandlerFlags(Code::LOAD_IC);
+  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
+      Code::ComputeHandlerFlags(Code::LOAD_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, receiver, name, rbx, rax);
 
   GenerateMiss(masm);
 }
 
 
 void LoadIC::GenerateNormal(MacroAssembler* masm) {
   Register dictionary = rax;
   ASSERT(!dictionary.is(ReceiverRegister()));
@@ skipping 110 matching lines @@
 
   // Perform tail call to the entry.
   __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1);
 }
 
 
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   // The return address is on the stack.
 
   // Get the receiver from the stack and probe the stub cache.
-  Code::Flags flags = Code::ComputeHandlerFlags(Code::STORE_IC);
+  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
+      Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, ReceiverRegister(), NameRegister(), rbx, no_reg);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
 }
 
 
 static void StoreIC_PushArgs(MacroAssembler* masm) {
   Register receiver = StoreIC::ReceiverRegister();
@@ skipping 175 matching lines @@
   Condition cc = (check == ENABLE_INLINED_SMI_CHECK)
       ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero)
       : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry);
   *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64