Revert r14930 and r14935 temporarily.

src/x64/lithium-x64.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 32 matching lines @@
 #define LITHIUM_ALL_INSTRUCTION_LIST(V)         \
   V(ControlInstruction)                         \
   V(Call)                                       \
   LITHIUM_CONCRETE_INSTRUCTION_LIST(V)
 
 
 #define LITHIUM_CONCRETE_INSTRUCTION_LIST(V)    \
   V(AccessArgumentsAt)                          \
   V(AddI)                                       \
   V(Allocate)                                   \
+  V(AllocateObject)                             \
   V(ApplyArguments)                             \
   V(ArgumentsElements)                          \
   V(ArgumentsLength)                            \
   V(ArithmeticD)                                \
   V(ArithmeticT)                                \
   V(BitI)                                       \
   V(BitNotI)                                    \
   V(BoundsCheck)                                \
   V(Branch)                                     \
   V(CallConstantFunction)                       \
@@ skipping 2292 matching lines @@
   explicit LCheckNonSmi(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
 };
 
 
+class LAllocateObject: public LTemplateInstruction<1, 0, 1> {
+ public:
+  explicit LAllocateObject(LOperand* temp) {
+    temps_[0] = temp;
+  }
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(AllocateObject, "allocate-object")
+  DECLARE_HYDROGEN_ACCESSOR(AllocateObject)
+};
+
+
 class LAllocate: public LTemplateInstruction<1, 1, 1> {
  public:
   LAllocate(LOperand* size, LOperand* temp) {
     inputs_[0] = size;
     temps_[0] = temp;
   }
 
   LOperand* size() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
@@ skipping 359 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_