[stubs] Port LoadFieldStub to TF

src/ic/accessor-assembler.cc

 // Copyright 2016 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/ic/accessor-assembler.h"
 #include "src/ic/accessor-assembler-impl.h"
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/ic/handler-configuration.h"
@@ skipping 1636 matching lines @@
   Node* name = Parameter(Descriptor::kName);
   Node* slot = Parameter(Descriptor::kSlot);
   Node* vector = Parameter(Descriptor::kVector);
   Node* handler = Parameter(Descriptor::kHandler);
   Node* context = Parameter(Descriptor::kContext);
 
   LoadICParameters p(context, receiver, name, slot, vector);
   LoadICProtoArray(&p, handler, throw_reference_error_if_nonexistent);
 }
 
+void AccessorAssemblerImpl::GenerateLoadField() {
+  typedef LoadFieldStub::Descriptor Descriptor;
+
+  Node* receiver = Parameter(Descriptor::kReceiver);
+  Node* name = nullptr;
+  Node* slot = nullptr;
+  Node* vector = nullptr;
+  Node* context = Parameter(Descriptor::kContext);
+  LoadICParameters p(context, receiver, name, slot, vector);
+
+  Label miss(this);
+  HandleLoadICSmiHandlerCase(&p, receiver, Parameter(Descriptor::kSmiHandler),
+                             &miss, kOnlyProperties);

[Igor Sheludko, 2016/12/22 15:48:14]

I think we should pass nullptr instead of miss label because we never jump to it
when kOnlyProperties is provided. Unused labels make CSA unhappy.

And please remove the new abort reason.

[danno, 2016/12/28 16:14:14]

Done.

+  Bind(&miss);
+  Node* reason = SmiConstant(Smi::FromInt(kUnsupportedSmiHandler));
+  TailCallRuntime(Runtime::kAbort, context, reason);
+}
+
 void AccessorAssemblerImpl::GenerateLoadGlobalIC(TypeofMode typeof_mode) {
   typedef LoadGlobalICStub::Descriptor Descriptor;
 
   Node* name = Parameter(Descriptor::kName);
   Node* slot = Parameter(Descriptor::kSlot);
   Node* vector = Parameter(Descriptor::kVector);
   Node* context = Parameter(Descriptor::kContext);
 
   LoadICParameters p(context, nullptr, name, slot, vector);
   LoadGlobalIC(&p, typeof_mode);
@@ skipping 146 matching lines @@
 void AccessorAssembler::GenerateKeyedStoreICTrampolineTF(
     CodeAssemblerState* state, LanguageMode language_mode) {
   AccessorAssemblerImpl assembler(state);
   assembler.GenerateKeyedStoreICTrampolineTF(language_mode);
 }
 
 #undef ACCESSOR_ASSEMBLER_PUBLIC_INTERFACE
 
 }  // namespace internal
 }  // namespace v8