Implement many KeyedStoreStubs using Crankshaft

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 8591adbea0d3c3c8322f52d7740c331cd88abd08..6e46d916821c122f94ab2e35d64287156e5a289f 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -1305,6 +1305,47 @@ class KeyedLoadFastElementStub : public HydrogenCodeStub {
 };
 
 
+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,