Use a stub in crankshaft for grow store arrays.

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 27d34b4415353156250c348fbdbf76117c438714..99e0cccb3f2bdeb80f97838092c5f33a3379124e 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -128,8 +128,7 @@ bool CodeStubGraphBuilderBase::BuildGraph() {
   HInstruction* stack_parameter_count = NULL;
   for (int i = 0; i < param_count; ++i) {
     Representation r = descriptor_->GetEnvironmentParameterRepresentation(i);
-    HParameter* param = Add<HParameter>(i,
-                                        HParameter::REGISTER_PARAMETER, r);
+    HParameter* param = Add<HParameter>(i, HParameter::REGISTER_PARAMETER, r);
     start_environment->Bind(i, param);
     parameters_[i] = param;
     if (descriptor_->IsEnvironmentParameterCountRegister(i)) {
@@ -537,6 +536,30 @@ Handle<Code> CreateAllocationSiteStub::GenerateCode() {
 
 
 template <>
+HValue* CodeStubGraphBuilder<GrowArrayElementsStub>::BuildCodeStub() {
+  HValue* object = GetParameter(GrowArrayElementsStub::kObjectIndex);
+  HValue* key = GetParameter(GrowArrayElementsStub::kKeyIndex);
+  HValue* current_capacity = GetParameter(
+      GrowArrayElementsStub::kCapacityIndex);
+  ElementsKind kind = casted_stub()->elements_kind();
+
+  HValue* elements = AddLoadElements(object);
+  HValue* length = casted_stub()->is_js_array()
+      ? Add<HLoadNamedField>(object, static_cast<HValue*>(NULL),
+          HObjectAccess::ForArrayLength(kind))
+      : current_capacity;
+
+  return BuildCheckAndGrowElementsCapacity(object, elements, kind, length,
+                                           current_capacity, key);
+}
+
+
+Handle<Code> GrowArrayElementsStub::GenerateCode() {
+  return DoGenerateCode(this);
+}
+
+
+template <>
 HValue* CodeStubGraphBuilder<KeyedLoadFastElementStub>::BuildCodeStub() {
   HInstruction* load = BuildUncheckedMonomorphicElementAccess(
       GetParameter(KeyedLoadIC::kReceiverIndex),