[strong] Implement strong property access semantics

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 43752cbf84160c4e40e36e37a7a970990e82fe1e..cf80c3db029c0d744d80545f29929cb9cf4a93ed 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -62,8 +62,7 @@ class CodeStubGraphBuilderBase : public HGraphBuilder {
   HContext* context() { return context_; }
   Isolate* isolate() { return info_->isolate(); }
 
-  HLoadNamedField* BuildLoadNamedField(HValue* object,
-                                       FieldIndex index);
+  HLoadNamedField* BuildLoadNamedField(HValue* object, FieldIndex index);
   void BuildStoreNamedField(HValue* object, HValue* value, FieldIndex index,
                             Representation representation,
                             bool transition_to_field);
@@ -1925,7 +1924,8 @@ HValue* CodeStubGraphBuilder<LoadDictionaryElementStub>::BuildCodeStub() {
 
   HValue* hash = BuildElementIndexHash(key);
 
-  return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash);
+  return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash,
+                                             casted_stub()->language_mode());
 }
 
 
@@ -2039,7 +2039,6 @@ void CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildExternalElementLoad(
 HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
   HValue* receiver = GetParameter(LoadDescriptor::kReceiverIndex);
   HValue* key = GetParameter(LoadDescriptor::kNameIndex);
-
   // Split into a smi/integer case and unique string case.
   HIfContinuation index_name_split_continuation(graph()->CreateBasicBlock(),
                                                 graph()->CreateBasicBlock());
@@ -2083,7 +2082,8 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
 
       HValue* hash = BuildElementIndexHash(key);
 
-      Push(BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash));
+      Push(BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash,
+                                               casted_stub()->language_mode()));
     }
     kind_if.Else();
 
@@ -2161,10 +2161,8 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
 
       hash = AddUncasted<HShr>(hash, Add<HConstant>(Name::kHashShift));
 
-      HValue* value = BuildUncheckedDictionaryElementLoad(receiver,
-                                                          properties,
-                                                          key,
-                                                          hash);
+      HValue* value = BuildUncheckedDictionaryElementLoad(
+          receiver, properties, key, hash, casted_stub()->language_mode());
       Push(value);
     }
     if_dict_properties.Else();
@@ -2242,7 +2240,10 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
         Add<HPushArguments>(receiver, key);
         Push(Add<HCallRuntime>(
             isolate()->factory()->empty_string(),
-            Runtime::FunctionForId(Runtime::kKeyedGetProperty), 2));
+            Runtime::FunctionForId(is_strong(casted_stub()->language_mode())
+                                       ? Runtime::kKeyedGetPropertyStrong
+                                       : Runtime::kKeyedGetProperty),
+            2));
       }
       inline_or_runtime.End();
     }