Use the same registers for StoreIC and KeyedStoreIC.

src/code-stubs-hydrogen.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/code-stubs.h"
 #include "src/field-index.h"
 #include "src/hydrogen.h"
 #include "src/lithium.h"
@@ skipping 1059 matching lines @@
 }
 
 
 Handle<Code> StoreGlobalStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 template<>
 HValue* CodeStubGraphBuilder<ElementsTransitionAndStoreStub>::BuildCodeStub() {
-  HValue* value = GetParameter(0);
-  HValue* map = GetParameter(1);
-  HValue* key = GetParameter(2);
-  HValue* object = GetParameter(3);
+  HValue* value = GetParameter(ElementsTransitionAndStoreStub::kValueIndex);
+  HValue* map = GetParameter(ElementsTransitionAndStoreStub::kMapIndex);
+  HValue* key = GetParameter(ElementsTransitionAndStoreStub::kKeyIndex);
+  HValue* object = GetParameter(ElementsTransitionAndStoreStub::kObjectIndex);
 
   if (FLAG_trace_elements_transitions) {
     // Tracing elements transitions is the job of the runtime.
     Add<HDeoptimize>("Tracing elements transitions", Deoptimizer::EAGER);
   } else {
     info()->MarkAsSavesCallerDoubles();
 
     BuildTransitionElementsKind(object, map,
                                 casted_stub()->from_kind(),
                                 casted_stub()->to_kind(),
@@ skipping 631 matching lines @@
   return Pop();
 }
 
 
 Handle<Code> KeyedLoadGenericElementStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 } }  // namespace v8::internal