X64: Convert smis to holding 32 bits of payload.

src/x64/assembler-x64-inl.h

 // Copyright 2009 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 20 matching lines @@
 #include "cpu.h"
 #include "memory.h"
 
 namespace v8 {
 namespace internal {
 
 Condition NegateCondition(Condition cc) {
   return static_cast<Condition>(cc ^ 1);
 }
 
-// -----------------------------------------------------------------------------
-
-Immediate::Immediate(Smi* value) {
-  value_ = static_cast<int32_t>(reinterpret_cast<intptr_t>(value));
-}
 
 // -----------------------------------------------------------------------------
 // Implementation of Assembler
 
 
 
 void Assembler::emitl(uint32_t x) {
   Memory::uint32_at(pc_) = x;
   pc_ += sizeof(uint32_t);
 }
@@ skipping 288 matching lines @@
   ASSERT(len_ == 1 || len_ == 2);
   int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]);
   *p = disp;
   len_ += sizeof(int32_t);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_INL_H_