Implement many KeyedStoreStubs using Crankshaft

src/code-stubs.h

 // Copyright 2012 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 1294 matching lines @@
   class ElementsKindBits: public BitField<ElementsKind, 0, 8> {};
   uint32_t bit_field_;
 
   Major MajorKey() { return KeyedLoadElement; }
   int MinorKey() { return bit_field_; }
 
   DISALLOW_COPY_AND_ASSIGN(KeyedLoadFastElementStub);
 };
 
 
+class KeyedStoreFastElementStub : public HydrogenCodeStub {
+ public:
+  KeyedStoreFastElementStub(bool is_js_array,
+                            ElementsKind elements_kind,
+                            KeyedAccessStoreMode mode) {
+    bit_field_ = ElementsKindBits::encode(elements_kind) |
+        IsJSArrayBits::encode(is_js_array) |
+        StoreModeBits::encode(mode);
+  }
+
+  Major MajorKey() { return KeyedStoreElement; }
+  int MinorKey() { return bit_field_; }
+
+  bool is_js_array() const {
+    return IsJSArrayBits::decode(bit_field_);
+  }
+
+  ElementsKind elements_kind() const {
+    return ElementsKindBits::decode(bit_field_);
+  }
+
+  KeyedAccessStoreMode store_mode() const {
+    return StoreModeBits::decode(bit_field_);
+  }
+
+  virtual Handle<Code> GenerateCode();
+
+  virtual void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor);
+
+ private:
+  class ElementsKindBits: public BitField<ElementsKind,      0, 8> {};
+  class StoreModeBits: public BitField<KeyedAccessStoreMode, 8, 4> {};
+  class IsJSArrayBits: public BitField<bool,                12, 1> {};
+  uint32_t bit_field_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyedStoreFastElementStub);
+};
+
+
 class TransitionElementsKindStub : public HydrogenCodeStub {
  public:
   TransitionElementsKindStub(ElementsKind from_kind,
                              ElementsKind to_kind) {
     bit_field_ = FromKindBits::encode(from_kind) |
         ToKindBits::encode(to_kind);
   }
 
   ElementsKind from_kind() const {
     return FromKindBits::decode(bit_field_);
@@ skipping 294 matching lines @@
 
   // The current function entry hook.
   static FunctionEntryHook entry_hook_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_