[stubs] StringToNumberStub --> StringToNumber builtin.

src/mips64/code-stubs-mips64.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_MIPS64
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 2651 matching lines @@
 
 void NonNumberToNumberStub::Generate(MacroAssembler* masm) {
   // The NonNumberToNumber stub takes on argument in a0.
   __ AssertNotNumber(a0);
 
   Label not_string;
   __ GetObjectType(a0, a1, a1);
   // a0: receiver
   // a1: receiver instance type
   __ Branch(&not_string, hs, a1, Operand(FIRST_NONSTRING_TYPE));
-  StringToNumberStub stub(masm->isolate());
-  __ TailCallStub(&stub);
+  __ Jump(isolate()->builtins()->StringToNumber(), RelocInfo::CODE_TARGET);
   __ bind(&not_string);
 
   Label not_oddball;
   __ Branch(&not_oddball, ne, a1, Operand(ODDBALL_TYPE));
   __ Ret(USE_DELAY_SLOT);
   __ ld(v0, FieldMemOperand(a0, Oddball::kToNumberOffset));  // In delay slot.
   __ bind(&not_oddball);
 
   __ Push(a0);  // Push argument.
   __ TailCallRuntime(Runtime::kToNumber);
 }
 
-void StringToNumberStub::Generate(MacroAssembler* masm) {
-  // The StringToNumber stub takes on argument in a0.
-  __ AssertString(a0);
-
-  // Check if string has a cached array index.
-  Label runtime;
-  __ lwu(a2, FieldMemOperand(a0, String::kHashFieldOffset));
-  __ And(at, a2, Operand(String::kContainsCachedArrayIndexMask));
-  __ Branch(&runtime, ne, at, Operand(zero_reg));
-  __ IndexFromHash(a2, v0);
-  __ Ret();
-
-  __ bind(&runtime);
-  __ Push(a0);  // Push argument.
-  __ TailCallRuntime(Runtime::kStringToNumber);
-}
-
 void ToStringStub::Generate(MacroAssembler* masm) {
   // The ToString stub takes on argument in a0.
   Label is_number;
   __ JumpIfSmi(a0, &is_number);
 
   Label not_string;
   __ GetObjectType(a0, a1, a1);
   // a0: receiver
   // a1: receiver instance type
   __ Branch(&not_string, ge, a1, Operand(FIRST_NONSTRING_TYPE));
@@ skipping 2952 matching lines @@
                            kStackUnwindSpace, kInvalidStackOffset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64