Avoid one repeated property lookup when computing store ICs.

src/stub-cache.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/v8.h"
 
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/ast.h"
 #include "src/code-stubs.h"
@@ skipping 989 matching lines @@
 
   GenerateRestoreName(&miss, name);
   TailCallBuiltin(masm(), MissBuiltin(kind()));
 
   GenerateRestoreName(&slow, name);
   TailCallBuiltin(masm(), SlowBuiltin(kind()));
   return GetCode(kind(), Code::FAST, name);
 }
 
 
-Handle<Code> NamedStoreHandlerCompiler::CompileStoreField(LookupResult* lookup,
-                                                          Handle<Name> name) {
+Handle<Code> NamedStoreHandlerCompiler::CompileStoreField(
+    LookupIterator* lookup, Handle<Name> name) {
   Label miss;
   GenerateStoreField(lookup, value(), &miss);
   __ bind(&miss);
   TailCallBuiltin(masm(), MissBuiltin(kind()));
   return GetCode(kind(), Code::FAST, name);
 }
 
 
 Handle<Code> NamedStoreHandlerCompiler::CompileStoreViaSetter(
     Handle<JSObject> object, Handle<Name> name, Handle<JSFunction> setter) {
@@ skipping 265 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal