Rename PushInt64AsTwoSmis to PushRegisterAsTwoSmis and support x32 as well.

src/x64/macro-assembler-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 708 matching lines @@
     LoadSmiConstant(dst, source);
   }
 
   void Move(const Operand& dst, Smi* source) {
     Register constant = GetSmiConstant(source);
     movp(dst, constant);
   }
 
   void Push(Smi* smi);
 
-  // Save away a 64-bit integer on the stack as two 32-bit integers
+  // Save away a raw integer with pointer size on the stack as two integers
   // masquerading as smis so that the garbage collector skips visiting them.
-  void PushInt64AsTwoSmis(Register src, Register scratch = kScratchRegister);
-  // Reconstruct a 64-bit integer from two 32-bit integers masquerading as
-  // smis on the top of stack.
-  void PopInt64AsTwoSmis(Register dst, Register scratch = kScratchRegister);
+  void PushRegisterAsTwoSmis(Register src, Register scratch = kScratchRegister);
+  // Reconstruct a raw integer with pointer size from two integers masquerading
+  // as smis on the top of stack.
+  void PopRegisterAsTwoSmis(Register dst, Register scratch = kScratchRegister);
 
   void Test(const Operand& dst, Smi* source);
 
 
   // ---------------------------------------------------------------------------
   // String macros.
 
   // Generate code to do a lookup in the number string cache. If the number in
   // the register object is found in the cache the generated code falls through
   // with the result in the result register. The object and the result register
@@ skipping 879 matching lines @@
     masm->popfq();                                                           \
   }                                                                          \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_