Turn LoadIndexedInterceptor into a Turbofan stub

src/code-stubs.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.
 
 #include "src/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/code-factory.h"
@@ skipping 2325 matching lines @@
     compiler::CodeStubAssembler* assembler) const {
   typedef compiler::Node Node;
   Node* receiver = assembler->Parameter(0);
   Node* name = assembler->Parameter(1);
   Node* value = assembler->Parameter(2);
   Node* context = assembler->Parameter(3);
   assembler->TailCallRuntime(Runtime::kStorePropertyWithInterceptor, context,
                              receiver, name, value);
 }
 
+void LoadIndexedInterceptorStub::GenerateAssembly(
+    compiler::CodeStubAssembler* assembler) const {
+  typedef compiler::Node Node;
+  typedef compiler::CodeStubAssembler::Label Label;
+  Node* receiver = assembler->Parameter(0);
+  Node* key = assembler->Parameter(1);
+  Node* slot = assembler->Parameter(2);
+  Node* vector = assembler->Parameter(3);
+  Node* context = assembler->Parameter(4);
+
+  Label if_keyispositivesmi(assembler), if_keyisinvalid(assembler);
+  assembler->Branch(assembler->WordIsPositiveSmi(key), &if_keyispositivesmi,
+                    &if_keyisinvalid);
+  assembler->Bind(&if_keyispositivesmi);
+  assembler->TailCallRuntime(Runtime::kLoadElementWithInterceptor, context,
+                             receiver, key);
+
+  assembler->Bind(&if_keyisinvalid);
+  assembler->TailCallRuntime(Runtime::kKeyedLoadIC_Miss, context, receiver, key,
+                             slot, vector);
+}
+
 template<class StateType>
 void HydrogenCodeStub::TraceTransition(StateType from, StateType to) {
   // Note: Although a no-op transition is semantically OK, it is hinting at a
   // bug somewhere in our state transition machinery.
   DCHECK(from != to);
   if (!FLAG_trace_ic) return;
   OFStream os(stdout);
   os << "[";
   PrintBaseName(os);
   os << ": " << from << "=>" << to << "]" << std::endl;
@@ skipping 415 matching lines @@
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 
 }  // namespace internal
 }  // namespace v8