Fix polymorphic to monomorphic load to take representation into account.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 395 matching lines @@
 
 
 Handle<Code> KeyedLoadFastElementStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 template<>
 HValue* CodeStubGraphBuilder<LoadFieldStub>::BuildCodeStub() {
   Representation representation = casted_stub()->representation();
-  HInstruction* load = AddInstruction(new(zone()) HLoadNamedField(
+  HInstruction* load = AddInstruction(DoBuildLoadNamedField(
       GetParameter(0), casted_stub()->is_inobject(),
       representation, casted_stub()->offset()));
   return load;
 }
 
 
 Handle<Code> LoadFieldStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 template<>
 HValue* CodeStubGraphBuilder<KeyedLoadFieldStub>::BuildCodeStub() {
   Representation representation = casted_stub()->representation();
-  HInstruction* load = AddInstruction(new(zone()) HLoadNamedField(
+  HInstruction* load = AddInstruction(DoBuildLoadNamedField(
       GetParameter(0), casted_stub()->is_inobject(),
       representation, casted_stub()->offset()));
   return load;
 }
 
 
 Handle<Code> KeyedLoadFieldStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
@@ skipping 221 matching lines @@
       ? graph()->GetConstantSmi1()
       : graph()->GetConstantUndefined();
 }
 
 
 Handle<Code> CompareNilICStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 } }  // namespace v8::internal