[stubs] Drop LoadICStub and LoadICTrampolineStub (the non-TurboFan implementations of LoadIC dispatc

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 {
 namespace internal {
 
 namespace {
 
 // TODO(ishell): make it (const Stub& stub) once CodeStub::GetCode() is const.
 template <typename Stub>
 Callable make_callable(Stub& stub) {
   typedef typename Stub::Descriptor Descriptor;
   return Callable(stub.GetCode(), Descriptor(stub.isolate()));
 }
 
 }  // namespace
 
 // static
 Callable CodeFactory::LoadIC(Isolate* isolate) {
-  if (FLAG_tf_load_ic_stub) {
-    LoadICTrampolineTFStub stub(isolate);
-    return make_callable(stub);
-  }
-  LoadICTrampolineStub stub(isolate);
+  LoadICTrampolineTFStub stub(isolate);
   return make_callable(stub);
 }
 
 // static
 Callable CodeFactory::ApiGetter(Isolate* isolate) {
   CallApiGetterStub stub(isolate);
   return make_callable(stub);
 }
 
 // static
 Callable CodeFactory::LoadICInOptimizedCode(Isolate* isolate) {
-  if (FLAG_tf_load_ic_stub) {
-    LoadICTFStub stub(isolate);
-    return make_callable(stub);
-  }
-  LoadICStub stub(isolate);
+  LoadICTFStub stub(isolate);
   return make_callable(stub);
 }
 
 // static
 Callable CodeFactory::LoadGlobalIC(Isolate* isolate, TypeofMode typeof_mode) {
   LoadGlobalICTrampolineStub stub(isolate, LoadGlobalICState(typeof_mode));
   return make_callable(stub);
 }
 
 // static
@@ skipping 449 matching lines @@
 }
 
 // static
 Callable CodeFactory::InterpreterOnStackReplacement(Isolate* isolate) {
   return Callable(isolate->builtins()->InterpreterOnStackReplacement(),
                   ContextOnlyDescriptor(isolate));
 }
 
 }  // namespace internal
 }  // namespace v8