Introduce accessors on builtins instance

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 5af2795f0482d1be4a7ab43c9a436ae0cfc0955c..6121f69dc4fe938d7962608a8d3946a064b91121 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2101,7 +2101,7 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   ASSERT(ToRegister(instr->result()).is(rax));
 
   __ Move(rcx, instr->name());
-  Handle<Code> ic(isolate()->builtins()->builtin(Builtins::LoadIC_Initialize));
+  Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -2227,8 +2227,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->object()).is(rdx));
   ASSERT(ToRegister(instr->key()).is(rax));
 
-  Handle<Code> ic(isolate()->builtins()->builtin(
-      Builtins::KeyedLoadIC_Initialize));
+  Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -2782,8 +2781,7 @@ void LCodeGen::DoCallNew(LCallNew* instr) {
   ASSERT(ToRegister(instr->InputAt(0)).is(rdi));
   ASSERT(ToRegister(instr->result()).is(rax));
 
-  Handle<Code> builtin(isolate()->builtins()->builtin(
-      Builtins::JSConstructCall));
+  Handle<Code> builtin = isolate()->builtins()->JSConstructCall();
   __ Set(rax, instr->arity());
   CallCode(builtin, RelocInfo::CONSTRUCT_CALL, instr);
 }
@@ -2829,9 +2827,9 @@ void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) {
   ASSERT(ToRegister(instr->value()).is(rax));
 
   __ Move(rcx, instr->hydrogen()->name());
-  Handle<Code> ic(isolate()->builtins()->builtin(
-      info_->is_strict() ? Builtins::StoreIC_Initialize_Strict
-                         : Builtins::StoreIC_Initialize));
+  Handle<Code> ic = info_->is_strict()
+      ? isolate()->builtins()->StoreIC_Initialize_Strict()
+      : isolate()->builtins()->StoreIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -2900,9 +2898,9 @@ void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->key()).is(rcx));
   ASSERT(ToRegister(instr->value()).is(rax));
 
-  Handle<Code> ic(isolate()->builtins()->builtin(
-      info_->is_strict() ? Builtins::KeyedStoreIC_Initialize_Strict
-                         : Builtins::KeyedStoreIC_Initialize));
+  Handle<Code> ic = info_->is_strict()
+      ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
+      : isolate()->builtins()->KeyedStoreIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }