Use a dictionary-mode code cache on the map rather than a dual system.

src/ic/arm/ic-arm.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.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/codegen.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-compiler.h"
 #include "src/ic/stub-cache.h"
@@ skipping 397 matching lines @@
   Register vector = LoadWithVectorDescriptor::VectorRegister();
   Register slot = LoadWithVectorDescriptor::SlotRegister();
   DCHECK(!AreAliased(vector, slot, r4, r5, r6, r9));
   Handle<TypeFeedbackVector> dummy_vector =
       TypeFeedbackVector::DummyVector(masm->isolate());
   int slot_index = dummy_vector->GetIndex(
       FeedbackVectorSlot(TypeFeedbackVector::kDummyKeyedLoadICSlot));
   __ LoadRoot(vector, Heap::kDummyVectorRootIndex);
   __ mov(slot, Operand(Smi::FromInt(slot_index)));
 
-  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::LOAD_IC));
+  Code::Flags flags =
+      Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::LOAD_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::KEYED_LOAD_IC, flags,
                                                receiver, key, r4, r5, r6, r9);
   // Cache miss.
   GenerateMiss(masm);
 
   // Do a quick inline probe of the receiver's dictionary, if it
   // exists.
   __ bind(&probe_dictionary);
   // r3: elements
   __ ldr(r0, FieldMemOperand(receiver, HeapObject::kMapOffset));
@@ skipping 245 matching lines @@
   Register slot = VectorStoreICDescriptor::SlotRegister();
 
   DCHECK(!AreAliased(vector, slot, r5, temporary2, r6, r9));
   Handle<TypeFeedbackVector> dummy_vector =
       TypeFeedbackVector::DummyVector(masm->isolate());
   int slot_index = dummy_vector->GetIndex(
       FeedbackVectorSlot(TypeFeedbackVector::kDummyKeyedStoreICSlot));
   __ LoadRoot(vector, Heap::kDummyVectorRootIndex);
   __ mov(slot, Operand(Smi::FromInt(slot_index)));
 
-  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::STORE_IC));
+  Code::Flags flags =
+      Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, Code::STORE_IC, flags, receiver, key, r5, temporary2, r6, r9);
   // Cache miss.
   __ b(&miss);
 
   // Extra capacity case: Check if there is extra capacity to
   // perform the store and update the length. Used for adding one
   // element to the array by writing to array[array.length].
   __ bind(&extra);
   // Condition code from comparing key and array length is still available.
@@ skipping 39 matching lines @@
 
 
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
   DCHECK(receiver.is(r1));
   DCHECK(name.is(r2));
   DCHECK(StoreDescriptor::ValueRegister().is(r0));
 
   // Get the receiver from the stack and probe the stub cache.
-  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::STORE_IC));
+  Code::Flags flags =
+      Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::STORE_IC));
 
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, flags,
                                                receiver, name, r3, r4, r5, r6);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
 }
 
 
 void StoreIC::GenerateMiss(MacroAssembler* masm) {
@@ skipping 121 matching lines @@
     patcher.EmitCondition(ne);
   } else {
     DCHECK(Assembler::GetCondition(branch_instr) == ne);
     patcher.EmitCondition(eq);
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM