Reland "Turn ElementsTransitionAndStore stub into a HydrogenCodeStub".

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 2227 matching lines @@
   Major MajorKey() { return ToBoolean; }
   int NotMissMinorKey() { return GetExtraICState(); }
 
   explicit ToBooleanStub(InitializationState init_state) :
     HydrogenCodeStub(init_state) {}
 
   Types types_;
 };
 
 
-class ElementsTransitionAndStoreStub : public PlatformCodeStub {
+class ElementsTransitionAndStoreStub : public HydrogenCodeStub {
  public:
-  ElementsTransitionAndStoreStub(ElementsKind from,
-                                 ElementsKind to,
+  ElementsTransitionAndStoreStub(ElementsKind from_kind,
+                                 ElementsKind to_kind,
                                  bool is_jsarray,
-                                 StrictModeFlag strict_mode,
                                  KeyedAccessStoreMode store_mode)
+      : from_kind_(from_kind),
+        to_kind_(to_kind),
+        is_jsarray_(is_jsarray),
+        store_mode_(store_mode) {}
+
+  ElementsKind from_kind() const { return from_kind_; }
+  ElementsKind to_kind() const { return to_kind_; }
+  bool is_jsarray() const { return is_jsarray_; }
+  KeyedAccessStoreMode store_mode() const { return store_mode_; }
+
+  Handle<Code> GenerateCode();
+
+  void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor);
+
+ private:
+  class FromBits:      public BitField<ElementsKind,          0, 8> {};
+  class ToBits:        public BitField<ElementsKind,          8, 8> {};
+  class IsJSArrayBits: public BitField<bool,                 16, 1> {};
+  class StoreModeBits: public BitField<KeyedAccessStoreMode, 17, 4> {};
+
+  Major MajorKey() { return ElementsTransitionAndStore; }
+  int NotMissMinorKey() {
+    return FromBits::encode(from_kind_) |
+        ToBits::encode(to_kind_) |
+        IsJSArrayBits::encode(is_jsarray_) |
+        StoreModeBits::encode(store_mode_);
+  }
+
+  ElementsKind from_kind_;
+  ElementsKind to_kind_;
+  bool is_jsarray_;
+  KeyedAccessStoreMode store_mode_;
+
+  DISALLOW_COPY_AND_ASSIGN(ElementsTransitionAndStoreStub);
+};
+
+
+// TODO(bmeurer) Remove this when compiled transitions is enabled
+class ElementsTransitionAndStorePlatformStub : public PlatformCodeStub {
+ public:
+  ElementsTransitionAndStorePlatformStub(ElementsKind from,
+                                         ElementsKind to,
+                                         bool is_jsarray,
+                                         StrictModeFlag strict_mode,
+                                         KeyedAccessStoreMode store_mode)
       : from_(from),
         to_(to),
         is_jsarray_(is_jsarray),
         strict_mode_(strict_mode),
         store_mode_(store_mode) {}
 
  private:
   class FromBits:       public BitField<ElementsKind,        0, 8> {};
   class ToBits:         public BitField<ElementsKind,        8, 8> {};
   class IsJSArrayBits:  public BitField<bool,                16, 1> {};
@@ skipping 10 matching lines @@
   }
 
   void Generate(MacroAssembler* masm);
 
   ElementsKind from_;
   ElementsKind to_;
   bool is_jsarray_;
   StrictModeFlag strict_mode_;
   KeyedAccessStoreMode store_mode_;
 
-  DISALLOW_COPY_AND_ASSIGN(ElementsTransitionAndStoreStub);
+  DISALLOW_COPY_AND_ASSIGN(ElementsTransitionAndStorePlatformStub);
 };
 
 
 class StoreArrayLiteralElementStub : public PlatformCodeStub {
  public:
   StoreArrayLiteralElementStub()
         : fp_registers_(CanUseFPRegisters()) { }
 
  private:
   class FPRegisters: public BitField<bool,                0, 1> {};
@@ skipping 55 matching lines @@
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
 
   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_