Use a stub in crankshaft for grow store arrays.

src/runtime/runtime-array.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/arguments.h"
 #include "src/runtime/runtime-utils.h"
 
 namespace v8 {
@@ skipping 1200 matching lines @@
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, array, 0);
   RUNTIME_ASSERT(!array->HasExternalArrayElements() &&
                  !array->HasFixedTypedArrayElements() &&
                  !array->IsJSGlobalProxy());
   JSObject::NormalizeElements(array);
   return *array;
 }
 
 
+// GrowArrayElements returns a sentinel Smi if the object was normalized.
+RUNTIME_FUNCTION(Runtime_GrowArrayElements) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 3);
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
+  CONVERT_SMI_ARG_CHECKED(key, 1);
+
+  if (key < 0) {
+    return object->elements();
+  }
+
+  uint32_t capacity = static_cast<uint32_t>(object->elements()->length());
+  uint32_t index = static_cast<uint32_t>(key);
+
+  if (index >= capacity) {
+    if (object->WouldConvertToSlowElements(index)) {
+      JSObject::NormalizeElements(object);
+      return Smi::FromInt(0);
+    }
+
+    uint32_t new_capacity = JSObject::NewElementsCapacity(index + 1);
+    ElementsKind kind = object->GetElementsKind();
+    if (IsFastDoubleElementsKind(kind)) {
+      JSObject::SetFastDoubleElementsCapacity(object, new_capacity);
+    } else {
+      JSObject::SetFastElementsCapacitySmiMode set_capacity_mode =
+          object->HasFastSmiElements() ? JSObject::kAllowSmiElements
+                                       : JSObject::kDontAllowSmiElements;
+      JSObject::SetFastElementsCapacity(object, new_capacity,
+                                        set_capacity_mode);
+    }
+  }
+
+  // On success, return the fixed array elements.
+  return object->elements();
+}
+
+
 RUNTIME_FUNCTION(Runtime_HasComplexElements) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, array, 0);
   for (PrototypeIterator iter(isolate, array,
                               PrototypeIterator::START_AT_RECEIVER);
        !iter.IsAtEnd(); iter.Advance()) {
     if (PrototypeIterator::GetCurrent(iter)->IsJSProxy()) {
       return isolate->heap()->true_value();
     }
@@ skipping 123 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_FastOneByteArrayJoin) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 2);
   // Returning undefined means that this fast path fails and one has to resort
   // to a slow path.
   return isolate->heap()->undefined_value();
 }
 }
 }  // namespace v8::internal