[stubs] Introduce ToNameStub to implement %_ToName.

src/full-codegen/x64/full-codegen-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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 3380 matching lines @@
   // Convert the object to an integer.
   Label done_convert;
   __ JumpIfSmi(rax, &done_convert, Label::kNear);
   __ Push(rax);
   __ CallRuntime(Runtime::kToInteger);
   __ bind(&done_convert);
   context()->Plug(rax);
 }
 
 
-void FullCodeGenerator::EmitToName(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  DCHECK_EQ(1, args->length());
-
-  // Load the argument into rax and convert it.
-  VisitForAccumulatorValue(args->at(0));
-
-  // Convert the object to a name.
-  Label convert, done_convert;
-  __ JumpIfSmi(rax, &convert, Label::kNear);
-  STATIC_ASSERT(FIRST_NAME_TYPE == FIRST_TYPE);
-  __ CmpObjectType(rax, LAST_NAME_TYPE, rcx);
-  __ j(below_equal, &done_convert, Label::kNear);
-  __ bind(&convert);
-  __ Push(rax);
-  __ CallRuntime(Runtime::kToName);
-  __ bind(&done_convert);
-  context()->Plug(rax);
-}
-
-
 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
 
   Label done;
   StringCharFromCodeGenerator generator(rax, rbx);
   generator.GenerateFast(masm_);
   __ jmp(&done);
@@ skipping 1308 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64