Create stub and runtime function for ia32 full-codegen array literal element initialization.

src/runtime.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4567 matching lines @@
   Handle<Object> object = args.at<Object>(0);
 
   if (object->IsJSFunction()) {
     JSFunction* func = JSFunction::cast(*object);
     func->shared()->set_native(true);
   }
   return isolate->heap()->undefined_value();
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_StoreArrayLiteralElement) {
+  RUNTIME_ASSERT(args.length() == 5);
+  CONVERT_ARG_CHECKED(JSObject, object, 0);
+  CONVERT_SMI_ARG_CHECKED(store_index, 1);
+  Handle<Object> value = args.at<Object>(2);
+  CONVERT_ARG_CHECKED(FixedArray, literals, 3);
+  CONVERT_SMI_ARG_CHECKED(literal_index, 4);
+  HandleScope scope;
+
+  Object* raw_boilerplate_object = literals->get(literal_index);
+  Handle<JSArray> boilerplate_object(JSArray::cast(raw_boilerplate_object));
+#if DEBUG
+  ElementsKind elements_kind = object->GetElementsKind();
+#endif
+  ASSERT(elements_kind <= FAST_DOUBLE_ELEMENTS);
+  // Smis should never trigger transitions.
+  ASSERT(!value->IsSmi());
+
+  if (value->IsNumber()) {
+    ASSERT(elements_kind == FAST_SMI_ONLY_ELEMENTS);
+    TransitionElementsKind(object, FAST_DOUBLE_ELEMENTS);
+    ASSERT(object->GetElementsKind() == FAST_DOUBLE_ELEMENTS);
+    FixedDoubleArray* double_array =
+        FixedDoubleArray::cast(object->elements());
+    HeapNumber* number = HeapNumber::cast(*value);
+    double_array->set(store_index, number->Number());
+  } else {
+    ASSERT(elements_kind == FAST_SMI_ONLY_ELEMENTS ||
+           elements_kind == FAST_DOUBLE_ELEMENTS);
+    TransitionElementsKind(object, FAST_ELEMENTS);
+    FixedArray* object_array =
+        FixedArray::cast(object->elements());
+    object_array->set(store_index, *value);
+  }
+  return *object;
+}
+
+
 // Set a local property, even if it is READ_ONLY.  If the property does not
 // exist, it will be added with attributes NONE.
 RUNTIME_FUNCTION(MaybeObject*, Runtime_IgnoreAttributesAndSetProperty) {
   NoHandleAllocation ha;
   RUNTIME_ASSERT(args.length() == 3 || args.length() == 4);
   CONVERT_CHECKED(JSObject, object, args[0]);
   CONVERT_CHECKED(String, name, args[1]);
   // Compute attributes.
   PropertyAttributes attributes = NONE;
   if (args.length() == 4) {
@@ skipping 8744 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags);
   }
 }
 
 
 } }  // namespace v8::internal