Introduce accessors on builtins instance

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index 37086a6bf0775c83ef60c8d314f9b7ae7564ee2d..403a1dc4f2a4bceeaf871a57085da68444e1772b 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -185,7 +185,7 @@ void StubCache::GenerateProbe(MacroAssembler* masm,
                               Register scratch,
                               Register extra,
                               Register extra2) {
-  Isolate* isolate = Isolate::Current();
+  Isolate* isolate = masm->isolate();
   Label miss;
   USE(extra);   // The register extra is not used on the X64 platform.
   USE(extra2);  // The register extra2 is not used on the X64 platform.
@@ -256,14 +256,15 @@ void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm,
 
 void StubCompiler::GenerateDirectLoadGlobalFunctionPrototype(
     MacroAssembler* masm, int index, Register prototype, Label* miss) {
+  Isolate* isolate = masm->isolate();
   // Check we're still in the same context.
-  __ Move(prototype, Isolate::Current()->global());
+  __ Move(prototype, isolate->global());
   __ cmpq(Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)),
           prototype);
   __ j(not_equal, miss);
   // Get the global function with the given index.
-  JSFunction* function = JSFunction::cast(
-      Isolate::Current()->global_context()->get(index));
+  JSFunction* function =
+      JSFunction::cast(isolate->global_context()->get(index));
   // Load its initial map. The global functions all have initial maps.
   __ Move(prototype, Handle<Map>(function->initial_map()));
   // Load the prototype from the initial map.
@@ -736,9 +737,9 @@ void StubCompiler::GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind) {
   ASSERT(kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC);
   Code* code = NULL;
   if (kind == Code::LOAD_IC) {
-    code = Isolate::Current()->builtins()->builtin(Builtins::LoadIC_Miss);
+    code = masm->isolate()->builtins()->builtin(Builtins::kLoadIC_Miss);
   } else {
-    code = Isolate::Current()->builtins()->builtin(Builtins::KeyedLoadIC_Miss);
+    code = masm->isolate()->builtins()->builtin(Builtins::kKeyedLoadIC_Miss);
   }
 
   Handle<Code> ic(code);
@@ -1324,7 +1325,7 @@ void CallStubCompiler::GenerateLoadFunctionFromCell(JSGlobalPropertyCell* cell,
 
 
 MaybeObject* CallStubCompiler::GenerateMissBranch() {
-  MaybeObject* maybe_obj = Isolate::Current()->stub_cache()->ComputeCallMiss(
+  MaybeObject* maybe_obj = masm()->isolate()->stub_cache()->ComputeCallMiss(
       arguments().immediate(), kind_);
   Object* obj;
   if (!maybe_obj->ToObject(&obj)) return maybe_obj;
@@ -2334,8 +2335,7 @@ MaybeObject* StoreStubCompiler::CompileStoreField(JSObject* object,
 
   // Handle store cache miss.
   __ bind(&miss);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::StoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -2386,8 +2386,7 @@ MaybeObject* StoreStubCompiler::CompileStoreCallback(JSObject* object,
 
   // Handle store cache miss.
   __ bind(&miss);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::StoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -2437,8 +2436,7 @@ MaybeObject* StoreStubCompiler::CompileStoreInterceptor(JSObject* receiver,
 
   // Handle store cache miss.
   __ bind(&miss);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::StoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -2482,8 +2480,7 @@ MaybeObject* StoreStubCompiler::CompileStoreGlobal(GlobalObject* object,
   // Handle store cache miss.
   __ bind(&miss);
   __ IncrementCounter(counters->named_store_global_inline_miss(), 1);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::StoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -2521,8 +2518,7 @@ MaybeObject* KeyedStoreStubCompiler::CompileStoreField(JSObject* object,
   // Handle store cache miss.
   __ bind(&miss);
   __ DecrementCounter(counters->keyed_store_field(), 1);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::KeyedStoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->KeyedStoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -2579,8 +2575,7 @@ MaybeObject* KeyedStoreStubCompiler::CompileStoreSpecialized(
 
   // Handle store cache miss.
   __ bind(&miss);
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
-      Builtins::KeyedStoreIC_Miss));
+  Handle<Code> ic = masm()->isolate()->builtins()->KeyedStoreIC_Miss();
   __ jmp(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
@@ -3158,8 +3153,8 @@ MaybeObject* ConstructStubCompiler::CompileConstructStub(JSFunction* function) {
   // Jump to the generic stub in case the specialized code cannot handle the
   // construction.
   __ bind(&generic_stub_call);
-  Code* code = Isolate::Current()->builtins()->builtin(
-      Builtins::JSConstructStubGeneric);
+  Code* code =
+      masm()->isolate()->builtins()->builtin(Builtins::kJSConstructStubGeneric);
   Handle<Code> generic_construct_stub(code);
   __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);