Separating transitions from descriptors.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 48cd780c6a43ec3a4ebb57f0fc4a54663d8896ac..b307512d673bb92db1df7781c132264b927b0f9f 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2410,7 +2410,7 @@ void LCodeGen::EmitLoadFieldOrConstantFunction(Register result,
                                                Handle<String> name,
                                                LEnvironment* env) {
   LookupResult lookup(isolate());
-  type->LookupInDescriptors(NULL, *name, &lookup);
+  type->LookupTransitionOrDescriptor(NULL, *name, &lookup);
   ASSERT(lookup.IsFound() || lookup.IsCacheable());
   if (lookup.IsField()) {
     int index = lookup.GetLocalFieldIndexFromMap(*type);
@@ -2471,9 +2471,9 @@ static bool CompactEmit(SmallMapList* list,
   Handle<Map> map = list->at(i);
   // If the map has ElementsKind transitions, we will generate map checks
   // for each kind in __ CompareMap(..., ALLOW_ELEMENTS_TRANSITION_MAPS).
-  if (map->elements_transition_map() != NULL) return false;
+  if (map->HasElementsTransition()) return false;
   LookupResult lookup(isolate);
-  map->LookupInDescriptors(NULL, *name, &lookup);
+  map->LookupDescriptor(NULL, *name, &lookup);
   return lookup.IsField() || lookup.IsConstantFunction();
 }