[Isolates] Less TLS reads in parser and full codegens.

src/x64/full-codegen-x64.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 389 matching lines @@
   ASSERT(materialize_true == materialize_false);
   __ bind(materialize_true);
 }
 
 
 void FullCodeGenerator::AccumulatorValueContext::Plug(
     Label* materialize_true,
     Label* materialize_false) const {
   NearLabel done;
   __ bind(materialize_true);
-  __ Move(result_register(), FACTORY->true_value());
+  __ Move(result_register(), isolate()->factory()->true_value());
   __ jmp(&done);
   __ bind(materialize_false);
-  __ Move(result_register(), FACTORY->false_value());
+  __ Move(result_register(), isolate()->factory()->false_value());
   __ bind(&done);
 }
 
 
 void FullCodeGenerator::StackValueContext::Plug(
     Label* materialize_true,
     Label* materialize_false) const {
   NearLabel done;
   __ bind(materialize_true);
-  __ Push(FACTORY->true_value());
+  __ Push(isolate()->factory()->true_value());
   __ jmp(&done);
   __ bind(materialize_false);
-  __ Push(FACTORY->false_value());
+  __ Push(isolate()->factory()->false_value());
   __ bind(&done);
 }
 
 
 void FullCodeGenerator::TestContext::Plug(Label* materialize_true,
                                           Label* materialize_false) const {
   ASSERT(materialize_true == true_label_);
   ASSERT(materialize_false == false_label_);
 }
 
@@ skipping 194 matching lines @@
         VisitForStackValue(prop->key());
         VisitForAccumulatorValue(function);
         __ pop(rcx);
       } else {
         VisitForAccumulatorValue(prop->key());
         __ movq(rcx, result_register());
         __ LoadRoot(result_register(), Heap::kTheHoleValueRootIndex);
       }
       __ pop(rdx);
 
-      Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+      Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::KeyedStoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
     }
   }
 }
 
 
 void FullCodeGenerator::VisitDeclaration(Declaration* decl) {
   EmitDeclaration(decl->proxy()->var(), decl->mode(), decl->fun());
 }
@@ skipping 217 matching lines @@
   // space for nested functions that don't need literals cloning.
   if (scope()->is_function_scope() &&
       info->num_literals() == 0 &&
       !pretenure) {
     FastNewClosureStub stub;
     __ Push(info);
     __ CallStub(&stub);
   } else {
     __ push(rsi);
     __ Push(info);
-    __ Push(pretenure ? FACTORY->true_value() : FACTORY->false_value());
+    __ Push(pretenure
+            ? isolate()->factory()->true_value()
+            : isolate()->factory()->false_value());
     __ CallRuntime(Runtime::kNewClosure, 3);
   }
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) {
   Comment cmnt(masm_, "[ VariableProxy");
   EmitVariableLoad(expr->var());
 }
@@ skipping 48 matching lines @@
     __ movq(temp, ContextOperand(temp, Context::CLOSURE_INDEX));
     __ movq(temp, FieldOperand(temp, JSFunction::kContextOffset));
     __ jmp(&next);
     __ bind(&fast);
   }
 
   // All extension objects were empty and it is safe to use a global
   // load IC call.
   __ movq(rax, GlobalObjectOperand());
   __ Move(rcx, slot->var()->name());
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+  Handle<Code> ic(isolate()->builtins()->builtin(
       Builtins::LoadIC_Initialize));
   RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
       ? RelocInfo::CODE_TARGET
       : RelocInfo::CODE_TARGET_CONTEXT;
   EmitCallIC(ic, mode);
 }
 
 
 MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(
     Slot* slot,
@@ skipping 60 matching lines @@
             key_literal != NULL &&
             obj_proxy->IsArguments() &&
             key_literal->handle()->IsSmi()) {
           // Load arguments object if there are no eval-introduced
           // variables. Then load the argument from the arguments
           // object using keyed load.
           __ movq(rdx,
                   ContextSlotOperandCheckExtensions(obj_proxy->var()->AsSlot(),
                                                     slow));
           __ Move(rax, key_literal->handle());
-          Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+          Handle<Code> ic(isolate()->builtins()->builtin(
               Builtins::KeyedLoadIC_Initialize));
           EmitCallIC(ic, RelocInfo::CODE_TARGET);
           __ jmp(done);
         }
       }
     }
   }
 }
 
 
 void FullCodeGenerator::EmitVariableLoad(Variable* var) {
   // Four cases: non-this global variables, lookup slots, all other
   // types of slots, and parameters that rewrite to explicit property
   // accesses on the arguments object.
   Slot* slot = var->AsSlot();
   Property* property = var->AsProperty();
 
   if (var->is_global() && !var->is_this()) {
     Comment cmnt(masm_, "Global variable");
     // Use inline caching. Variable name is passed in rcx and the global
     // object on the stack.
     __ Move(rcx, var->name());
     __ movq(rax, GlobalObjectOperand());
-    Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+    Handle<Code> ic(isolate()->builtins()->builtin(
         Builtins::LoadIC_Initialize));
     EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
     context()->Plug(rax);
 
   } else if (slot != NULL && slot->type() == Slot::LOOKUP) {
     Label done, slow;
 
     // Generate code for loading from variables potentially shadowed
     // by eval-introduced variables.
     EmitDynamicLoadFromSlotFastCase(slot, NOT_INSIDE_TYPEOF, &slow, &done);
@@ skipping 10 matching lines @@
   } else if (slot != NULL) {
     Comment cmnt(masm_, (slot->type() == Slot::CONTEXT)
                             ? "Context slot"
                             : "Stack slot");
     if (var->mode() == Variable::CONST) {
       // Constants may be the hole value if they have not been initialized.
       // Unhole them.
       NearLabel done;
       MemOperand slot_operand = EmitSlotSearch(slot, rax);
       __ movq(rax, slot_operand);
-      __ CompareRoot(rax, HEAP->kTheHoleValueRootIndex);
+      __ CompareRoot(rax, Heap::kTheHoleValueRootIndex);
       __ j(not_equal, &done);
-      __ LoadRoot(rax, HEAP->kUndefinedValueRootIndex);
+      __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
       __ bind(&done);
       context()->Plug(rax);
     } else {
       context()->Plug(slot);
     }
 
   } else {
     Comment cmnt(masm_, "Rewritten parameter");
     ASSERT_NOT_NULL(property);
     // Rewritten parameter accesses are of the form "slot[literal]".
@@ skipping 10 matching lines @@
 
     // Assert that the key is a smi.
     Literal* key_literal = property->key()->AsLiteral();
     ASSERT_NOT_NULL(key_literal);
     ASSERT(key_literal->handle()->IsSmi());
 
     // Load the key.
     __ Move(rax, key_literal->handle());
 
     // Do a keyed property load.
-    Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+    Handle<Code> ic(isolate()->builtins()->builtin(
         Builtins::KeyedLoadIC_Initialize));
     EmitCallIC(ic, RelocInfo::CODE_TARGET);
     context()->Plug(rax);
   }
 }
 
 
 void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) {
   Comment cmnt(masm_, "[ RegExpLiteral");
   Label materialized;
@@ skipping 85 matching lines @@
         UNREACHABLE();
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
         ASSERT(!CompileTimeValue::IsCompileTimeValue(value));
         // Fall through.
       case ObjectLiteral::Property::COMPUTED:
         if (key->handle()->IsSymbol()) {
           VisitForAccumulatorValue(value);
           __ Move(rcx, key->handle());
           __ movq(rdx, Operand(rsp, 0));
           if (property->emit_store()) {
-            Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+            Handle<Code> ic(isolate()->builtins()->builtin(
                 Builtins::StoreIC_Initialize));
             EmitCallIC(ic, RelocInfo::CODE_TARGET);
           }
           break;
         }
         // Fall through.
       case ObjectLiteral::Property::PROTOTYPE:
         __ push(Operand(rsp, 0));  // Duplicate receiver.
         VisitForStackValue(key);
         VisitForStackValue(value);
@@ skipping 27 matching lines @@
 void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
   Comment cmnt(masm_, "[ ArrayLiteral");
 
   ZoneList<Expression*>* subexprs = expr->values();
   int length = subexprs->length();
 
   __ movq(rbx, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
   __ push(FieldOperand(rbx, JSFunction::kLiteralsOffset));
   __ Push(Smi::FromInt(expr->literal_index()));
   __ Push(expr->constant_elements());
-  if (expr->constant_elements()->map() == HEAP->fixed_cow_array_map()) {
+  if (expr->constant_elements()->map() ==
+      isolate()->heap()->fixed_cow_array_map()) {
     FastCloneShallowArrayStub stub(
         FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS, length);
     __ CallStub(&stub);
-    __ IncrementCounter(COUNTERS->cow_arrays_created_stub(), 1);
+    __ IncrementCounter(isolate()->counters()->cow_arrays_created_stub(), 1);
   } else if (expr->depth() > 1) {
     __ CallRuntime(Runtime::kCreateArrayLiteral, 3);
   } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) {
     __ CallRuntime(Runtime::kCreateArrayLiteralShallow, 3);
   } else {
     FastCloneShallowArrayStub stub(
         FastCloneShallowArrayStub::CLONE_ELEMENTS, length);
     __ CallStub(&stub);
   }
 
@@ skipping 141 matching lines @@
       EmitKeyedPropertyAssignment(expr);
       break;
   }
 }
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
   __ Move(rcx, key->handle());
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+  Handle<Code> ic(isolate()->builtins()->builtin(
       Builtins::LoadIC_Initialize));
   EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+  Handle<Code> ic(isolate()->builtins()->builtin(
       Builtins::KeyedLoadIC_Initialize));
   EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
 void FullCodeGenerator::EmitInlineSmiBinaryOp(Expression* expr,
                                               Token::Value op,
                                               OverwriteMode mode,
                                               Expression* left,
                                               Expression* right,
@@ skipping 98 matching lines @@
       EffectContext context(this);
       EmitVariableAssignment(var, Token::ASSIGN);
       break;
     }
     case NAMED_PROPERTY: {
       __ push(rax);  // Preserve value.
       VisitForAccumulatorValue(prop->obj());
       __ movq(rdx, rax);
       __ pop(rax);  // Restore value.
       __ Move(rcx, prop->key()->AsLiteral()->handle());
-      Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+      Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::StoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
     case KEYED_PROPERTY: {
       __ push(rax);  // Preserve value.
       VisitForStackValue(prop->obj());
       VisitForAccumulatorValue(prop->key());
       __ movq(rcx, rax);
       __ pop(rdx);
       __ pop(rax);
-      Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+      Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::KeyedStoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
   }
 }
 
 
 void FullCodeGenerator::EmitVariableAssignment(Variable* var,
                                                Token::Value op) {
   // Left-hand sides that rewrite to explicit property accesses do not reach
   // here.
   ASSERT(var != NULL);
   ASSERT(var->is_global() || var->AsSlot() != NULL);
 
   if (var->is_global()) {
     ASSERT(!var->is_this());
     // Assignment to a global variable.  Use inline caching for the
     // assignment.  Right-hand-side value is passed in rax, variable name in
     // rcx, and the global object on the stack.
     __ Move(rcx, var->name());
     __ movq(rdx, GlobalObjectOperand());
-    Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+    Handle<Code> ic(isolate()->builtins()->builtin(
         Builtins::StoreIC_Initialize));
     EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   } else if (var->mode() != Variable::CONST || op == Token::INIT_CONST) {
     // Perform the assignment for non-const variables and for initialization
     // of const variables.  Const assignments are simply skipped.
     Label done;
     Slot* slot = var->AsSlot();
     switch (slot->type()) {
       case Slot::PARAMETER:
@@ skipping 64 matching lines @@
   }
 
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
   __ Move(rcx, prop->key()->AsLiteral()->handle());
   if (expr->ends_initialization_block()) {
     __ movq(rdx, Operand(rsp, 0));
   } else {
     __ pop(rdx);
   }
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+  Handle<Code> ic(isolate()->builtins()->builtin(
       Builtins::StoreIC_Initialize));
   EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
     __ push(rax);  // Result of assignment, saved even if not needed.
     __ push(Operand(rsp, kPointerSize));  // Receiver is under value.
     __ CallRuntime(Runtime::kToFastProperties, 1);
     __ pop(rax);
     context()->DropAndPlug(1, rax);
@@ skipping 18 matching lines @@
   }
 
   __ pop(rcx);
   if (expr->ends_initialization_block()) {
     __ movq(rdx, Operand(rsp, 0));  // Leave receiver on the stack for later.
   } else {
     __ pop(rdx);
   }
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
-  Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+  Handle<Code> ic(isolate()->builtins()->builtin(
       Builtins::KeyedStoreIC_Initialize));
   EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
     __ pop(rdx);
     __ push(rax);  // Result of assignment, saved even if not needed.
     __ push(rdx);
     __ CallRuntime(Runtime::kToFastProperties, 1);
     __ pop(rax);
@@ skipping 211 matching lines @@
       { PreservePositionScope scope(masm()->positions_recorder());
         VisitForStackValue(prop->obj());
       }
       if (prop->is_synthetic()) {
         { PreservePositionScope scope(masm()->positions_recorder());
           VisitForAccumulatorValue(prop->key());
           __ movq(rdx, Operand(rsp, 0));
         }
         // Record source code position for IC call.
         SetSourcePosition(prop->position());
-        Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+        Handle<Code> ic(isolate()->builtins()->builtin(
             Builtins::KeyedLoadIC_Initialize));
         EmitCallIC(ic, RelocInfo::CODE_TARGET);
         // Pop receiver.
         __ pop(rbx);
         // Push result (function).
         __ push(rax);
         // Push receiver object on stack.
         __ movq(rcx, GlobalObjectOperand());
         __ push(FieldOperand(rcx, GlobalObject::kGlobalReceiverOffset));
         EmitCallWithStub(expr);
       } else {
         EmitKeyedCallWithIC(expr, prop->key(), RelocInfo::CODE_TARGET);
       }
     }
   } else {
     // Call to some other expression.  If the expression is an anonymous
     // function literal not called in a loop, mark it as one that should
     // also use the fast code generator.
     FunctionLiteral* lit = fun->AsFunctionLiteral();
     if (lit != NULL &&
-        lit->name()->Equals(HEAP->empty_string()) &&
+        lit->name()->Equals(isolate()->heap()->empty_string()) &&
         loop_depth() == 0) {
       lit->set_try_full_codegen(true);
     }
     { PreservePositionScope scope(masm()->positions_recorder());
       VisitForStackValue(fun);
     }
     // Load global receiver object.
     __ movq(rbx, GlobalObjectOperand());
     __ push(FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset));
     // Emit function call.
@@ skipping 21 matching lines @@
   }
 
   // Call the construct call builtin that handles allocation and
   // constructor invocation.
   SetSourcePosition(expr->position());
 
   // Load function and argument count into rdi and rax.
   __ Set(rax, arg_count);
   __ movq(rdi, Operand(rsp, arg_count * kPointerSize));
 
-  Handle<Code> construct_builtin(Isolate::Current()->builtins()->builtin(
+  Handle<Code> construct_builtin(isolate()->builtins()->builtin(
       Builtins::JSConstructCall));
   __ Call(construct_builtin, RelocInfo::CONSTRUCT_CALL);
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitIsSmi(ZoneList<Expression*>* args) {
   ASSERT(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
@@ skipping 302 matching lines @@
   __ j(not_equal, &non_function_constructor);
 
   // rax now contains the constructor function. Grab the
   // instance class name from there.
   __ movq(rax, FieldOperand(rax, JSFunction::kSharedFunctionInfoOffset));
   __ movq(rax, FieldOperand(rax, SharedFunctionInfo::kInstanceClassNameOffset));
   __ jmp(&done);
 
   // Functions have class 'Function'.
   __ bind(&function);
-  __ Move(rax, FACTORY->function_class_symbol());
+  __ Move(rax, isolate()->factory()->function_class_symbol());
   __ jmp(&done);
 
   // Objects with a non-function constructor have class 'Object'.
   __ bind(&non_function_constructor);
-  __ Move(rax, FACTORY->Object_symbol());
+  __ Move(rax, isolate()->factory()->Object_symbol());
   __ jmp(&done);
 
   // Non-JS objects have class null.
   __ bind(&null);
   __ LoadRoot(rax, Heap::kNullValueRootIndex);
 
   // All done.
   __ bind(&done);
 
   context()->Plug(rax);
@@ skipping 368 matching lines @@
 }
 
 
 void FullCodeGenerator::EmitGetFromCache(ZoneList<Expression*>* args) {
   ASSERT_EQ(2, args->length());
 
   ASSERT_NE(NULL, args->at(0)->AsLiteral());
   int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->handle()))->value();
 
   Handle<FixedArray> jsfunction_result_caches(
-      Isolate::Current()->global_context()->jsfunction_result_caches());
+      isolate()->global_context()->jsfunction_result_caches());
   if (jsfunction_result_caches->length() <= cache_id) {
     __ Abort("Attempt to use undefined cache.");
     __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
     context()->Plug(rax);
     return;
   }
 
   VisitForAccumulatorValue(args->at(1));
 
   Register key = rax;
@@ skipping 56 matching lines @@
   __ movq(tmp, FieldOperand(left, HeapObject::kMapOffset));
   __ cmpb(FieldOperand(tmp, Map::kInstanceTypeOffset),
           Immediate(JS_REGEXP_TYPE));
   __ j(not_equal, &fail);
   __ cmpq(tmp, FieldOperand(right, HeapObject::kMapOffset));
   __ j(not_equal, &fail);
   __ movq(tmp, FieldOperand(left, JSRegExp::kDataOffset));
   __ cmpq(tmp, FieldOperand(right, JSRegExp::kDataOffset));
   __ j(equal, &ok);
   __ bind(&fail);
-  __ Move(rax, FACTORY->false_value());
+  __ Move(rax, isolate()->factory()->false_value());
   __ jmp(&done);
   __ bind(&ok);
-  __ Move(rax, FACTORY->true_value());
+  __ Move(rax, isolate()->factory()->true_value());
   __ bind(&done);
 
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitHasCachedArrayIndex(ZoneList<Expression*>* args) {
   ASSERT(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
@@ skipping 327 matching lines @@
         }
       } else {
         // Perform the assignment as if via '='.
         EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
                                Token::ASSIGN);
       }
       break;
     case NAMED_PROPERTY: {
       __ Move(rcx, prop->key()->AsLiteral()->handle());
       __ pop(rdx);
-      Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+      Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::StoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(rax);
       }
       break;
     }
     case KEYED_PROPERTY: {
       __ pop(rcx);
       __ pop(rdx);
-      Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+      Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::KeyedStoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(rax);
       }
       break;
     }
   }
 }
 
 
 void FullCodeGenerator::VisitForTypeofValue(Expression* expr) {
   VariableProxy* proxy = expr->AsVariableProxy();
   ASSERT(!context()->IsEffect());
   ASSERT(!context()->IsTest());
 
   if (proxy != NULL && !proxy->var()->is_this() && proxy->var()->is_global()) {
     Comment cmnt(masm_, "Global variable");
     __ Move(rcx, proxy->name());
     __ movq(rax, GlobalObjectOperand());
-    Handle<Code> ic(Isolate::Current()->builtins()->builtin(
+    Handle<Code> ic(isolate()->builtins()->builtin(
         Builtins::LoadIC_Initialize));
     // Use a regular load, not a contextual load, to avoid a reference
     // error.
     EmitCallIC(ic, RelocInfo::CODE_TARGET);
     context()->Plug(rax);
   } else if (proxy != NULL &&
              proxy->var()->AsSlot() != NULL &&
              proxy->var()->AsSlot()->type() == Slot::LOOKUP) {
     Label done, slow;
 
@@ skipping 30 matching lines @@
   Handle<Object> right_literal_value = right_literal->handle();
   if (!right_literal_value->IsString()) return false;
   UnaryOperation* left_unary = left->AsUnaryOperation();
   if (left_unary == NULL || left_unary->op() != Token::TYPEOF) return false;
   Handle<String> check = Handle<String>::cast(right_literal_value);
 
   { AccumulatorValueContext context(this);
     VisitForTypeofValue(left_unary->expression());
   }
 
-  if (check->Equals(HEAP->number_symbol())) {
+  if (check->Equals(isolate()->heap()->number_symbol())) {
     Condition is_smi = masm_->CheckSmi(rax);
     __ j(is_smi, if_true);
     __ movq(rax, FieldOperand(rax, HeapObject::kMapOffset));
     __ CompareRoot(rax, Heap::kHeapNumberMapRootIndex);
     Split(equal, if_true, if_false, fall_through);
-  } else if (check->Equals(HEAP->string_symbol())) {
+  } else if (check->Equals(isolate()->heap()->string_symbol())) {
     Condition is_smi = masm_->CheckSmi(rax);
     __ j(is_smi, if_false);
     // Check for undetectable objects => false.
     __ movq(rdx, FieldOperand(rax, HeapObject::kMapOffset));
     __ testb(FieldOperand(rdx, Map::kBitFieldOffset),
              Immediate(1 << Map::kIsUndetectable));
     __ j(not_zero, if_false);
     __ CmpInstanceType(rdx, FIRST_NONSTRING_TYPE);
     Split(below, if_true, if_false, fall_through);
-  } else if (check->Equals(HEAP->boolean_symbol())) {
+  } else if (check->Equals(isolate()->heap()->boolean_symbol())) {
     __ CompareRoot(rax, Heap::kTrueValueRootIndex);
     __ j(equal, if_true);
     __ CompareRoot(rax, Heap::kFalseValueRootIndex);
     Split(equal, if_true, if_false, fall_through);
-  } else if (check->Equals(HEAP->undefined_symbol())) {
+  } else if (check->Equals(isolate()->heap()->undefined_symbol())) {
     __ CompareRoot(rax, Heap::kUndefinedValueRootIndex);
     __ j(equal, if_true);
     Condition is_smi = masm_->CheckSmi(rax);
     __ j(is_smi, if_false);
     // Check for undetectable objects => true.
     __ movq(rdx, FieldOperand(rax, HeapObject::kMapOffset));
     __ testb(FieldOperand(rdx, Map::kBitFieldOffset),
              Immediate(1 << Map::kIsUndetectable));
     Split(not_zero, if_true, if_false, fall_through);
-  } else if (check->Equals(HEAP->function_symbol())) {
+  } else if (check->Equals(isolate()->heap()->function_symbol())) {
     Condition is_smi = masm_->CheckSmi(rax);
     __ j(is_smi, if_false);
     __ CmpObjectType(rax, JS_FUNCTION_TYPE, rdx);
     __ j(equal, if_true);
     // Regular expressions => 'function' (they are callable).
     __ CmpInstanceType(rdx, JS_REGEXP_TYPE);
     Split(equal, if_true, if_false, fall_through);
-  } else if (check->Equals(HEAP->object_symbol())) {
+  } else if (check->Equals(isolate()->heap()->object_symbol())) {
     Condition is_smi = masm_->CheckSmi(rax);
     __ j(is_smi, if_false);
     __ CompareRoot(rax, Heap::kNullValueRootIndex);
     __ j(equal, if_true);
     // Regular expressions => 'function', not 'object'.
     __ CmpObjectType(rax, JS_REGEXP_TYPE, rdx);
     __ j(equal, if_false);
     // Check for undetectable objects => false.
     __ testb(FieldOperand(rdx, Map::kBitFieldOffset),
              Immediate(1 << Map::kIsUndetectable));
@@ skipping 230 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64