[strong] Implement strong mode restrictions on property access

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 45303bd1460c8420ecae38921319e1f68292c591..f8bebaf9b7c8c40f2f484c3dc407ab44865f737c 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);
@@ -1901,7 +1900,8 @@ HValue* CodeStubGraphBuilder<LoadDictionaryElementStub>::BuildCodeStub() {
 
   HValue* hash = BuildElementIndexHash(key);
 
-  return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash);
+  return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash,
+                                             casted_stub()->strength());
 }
 
 
@@ -2015,7 +2015,6 @@ 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());
@@ -2059,7 +2058,8 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
 
       HValue* hash = BuildElementIndexHash(key);
 
-      Push(BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash));
+      Push(BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash,
+                                               casted_stub()->strength()));
     }
     kind_if.Else();
 
@@ -2137,10 +2137,8 @@ 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()->strength());
       Push(value);
     }
     if_dict_properties.Else();
@@ -2215,10 +2213,12 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
       inline_or_runtime.Else();
       {
         // KeyedLookupCache miss; call runtime.
-        Add<HPushArguments>(receiver, key);
+        Add<HPushArguments>(receiver, key,
+                            graph()->GetConstantBool(
+                                static_cast<bool>(casted_stub()->strength())));
         Push(Add<HCallRuntime>(
             isolate()->factory()->empty_string(),
-            Runtime::FunctionForId(Runtime::kKeyedGetProperty), 2));
+            Runtime::FunctionForId(Runtime::kKeyedGetProperty), 3));
       }
       inline_or_runtime.End();
     }