[turbofan] Introduce Float64Pow and NumberPow operators.

src/code-factory.cc

 // Copyright 2014 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.
 
 #include "src/code-factory.h"
 
 #include "src/bootstrapper.h"
 #include "src/ic/ic.h"
 
 namespace v8 {
@@ skipping 537 matching lines @@
                   ConstructTrampolineDescriptor(isolate));
 }
 
 // static
 Callable CodeFactory::HasProperty(Isolate* isolate) {
   HasPropertyStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 // static
-Callable CodeFactory::MathPow(Isolate* isolate) {
-  MathPowStub stub(isolate, MathPowStub::ON_STACK);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
-}
-
-// static
 Callable CodeFactory::InterpreterPushArgsAndCall(Isolate* isolate,
                                                  TailCallMode tail_call_mode) {
   return Callable(
       isolate->builtins()->InterpreterPushArgsAndCall(tail_call_mode),
       InterpreterPushArgsAndCallDescriptor(isolate));
 }
 
 
 // static
 Callable CodeFactory::InterpreterPushArgsAndConstruct(Isolate* isolate) {
   return Callable(isolate->builtins()->InterpreterPushArgsAndConstruct(),
                   InterpreterPushArgsAndConstructDescriptor(isolate));
 }
 
 
 // static
 Callable CodeFactory::InterpreterCEntry(Isolate* isolate, int result_size) {
   // Note: If we ever use fpregs in the interpreter then we will need to
   // save fpregs too.
   CEntryStub stub(isolate, result_size, kDontSaveFPRegs, kArgvInRegister);
   return Callable(stub.GetCode(), InterpreterCEntryDescriptor(isolate));
 }
 
 }  // namespace internal
 }  // namespace v8