emit premonomorphic ics for loads/stores in optimized code

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index e8b2dbf9c98796d02a0e768466c4ab643d68d3dd..433041d908bddd50db8f5e655735a92a9223f399 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -990,11 +990,14 @@ Handle<Code> LoadIC::initialize_stub(Isolate* isolate,
 
 
 Handle<Code> LoadIC::initialize_stub_in_optimized_code(
-    Isolate* isolate, ExtraICState extra_state) {
+    Isolate* isolate, ExtraICState extra_state, State initialization_state) {
+  DCHECK(initialization_state == UNINITIALIZED ||
+         initialization_state == MEGAMORPHIC);
   if (FLAG_vector_ics) {
     return VectorLoadStub(isolate, LoadICState(extra_state)).GetCode();
   }
-  return initialize_stub(isolate, extra_state);
+  return PropertyICCompiler::ComputeLoad(isolate, initialization_state,
+                                         extra_state);
 }
 
 
@@ -1615,10 +1618,13 @@ Handle<Code> CallIC::initialize_stub_in_optimized_code(
 
 
 Handle<Code> StoreIC::initialize_stub(Isolate* isolate,
-                                      LanguageMode language_mode) {
+                                      LanguageMode language_mode,
+                                      State initialization_state) {
+  DCHECK(initialization_state == UNINITIALIZED ||
+         initialization_state == MEGAMORPHIC);
   ExtraICState extra_state = ComputeExtraICState(language_mode);
-  Handle<Code> ic =
-      PropertyICCompiler::ComputeStore(isolate, UNINITIALIZED, extra_state);
+  Handle<Code> ic = PropertyICCompiler::ComputeStore(
+      isolate, initialization_state, extra_state);
   return ic;
 }