[stubs] StringToNumberStub --> StringToNumber builtin.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 92ea9f5e8b4acb614df452adaa81346fafcdcc49..cb4930df4a4f74b0e25b9c4045f460db17f0603c 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -2523,8 +2523,7 @@ void NonNumberToNumberStub::Generate(MacroAssembler* masm) {
   __ CompareObjectType(r0, r1, r1, FIRST_NONSTRING_TYPE);
   // r0: receiver
   // r1: receiver instance type
-  StringToNumberStub stub(masm->isolate());
-  __ TailCallStub(&stub, lo);
+  __ Jump(isolate()->builtins()->StringToNumber(), RelocInfo::CODE_TARGET, lo);
 
   Label not_oddball;
   __ cmp(r1, Operand(ODDBALL_TYPE));
@@ -2537,23 +2536,6 @@ void NonNumberToNumberStub::Generate(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kToNumber);
 }
 
-void StringToNumberStub::Generate(MacroAssembler* masm) {
-  // The StringToNumber stub takes one argument in r0.
-  __ AssertString(r0);
-
-  // Check if string has a cached array index.
-  Label runtime;
-  __ ldr(r2, FieldMemOperand(r0, String::kHashFieldOffset));
-  __ tst(r2, Operand(String::kContainsCachedArrayIndexMask));
-  __ b(ne, &runtime);
-  __ IndexFromHash(r2, r0);
-  __ Ret();
-
-  __ bind(&runtime);
-  __ Push(r0);  // Push argument.
-  __ TailCallRuntime(Runtime::kStringToNumber);
-}
-
 void ToStringStub::Generate(MacroAssembler* masm) {
   // The ToString stub takes one argument in r0.
   Label is_number;