[stubs] ToNumberStub --> ToNumber builtin.

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 3199 matching lines @@
                         Label::kNear);
     } else {
       __ SmiSubConstant(rax, rax, Smi::FromInt(1), constraints, &done,
                         Label::kNear);
     }
     __ jmp(&stub_call, Label::kNear);
     __ bind(&slow);
   }
 
   // Convert old value into a number.
-  ToNumberStub convert_stub(isolate());
-  __ CallStub(&convert_stub);
+  __ Call(isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
   PrepareForBailoutForId(expr->ToNumberId(), BailoutState::TOS_REGISTER);
 
   // Save result for postfix expressions.
   if (expr->is_postfix()) {
     if (!context()->IsEffect()) {
       // Save the result on the stack. If we have a named or keyed property
       // we store the result under the receiver that is currently on top
       // of the stack.
       switch (assign_type) {
         case VARIABLE:
@@ skipping 472 matching lines @@
   DCHECK_EQ(
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64