Use untagged int32 values in evaluation of side-effect free expressions.

src/ia32/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 223 matching lines @@
   times_pointer_size = times_4,
   times_twice_pointer_size = times_8
 };
 
 
 class Operand BASE_EMBEDDED {
  public:
   // reg
   INLINE(explicit Operand(Register reg));
 
+  // XMM reg
+  INLINE(explicit Operand(XMMRegister xmm_reg));
+
   // [disp/r]
   INLINE(explicit Operand(int32_t disp, RelocInfo::Mode rmode));
   // disp only must always be relocated
 
   // [base + disp/r]
   explicit Operand(Register base, int32_t disp,
                    RelocInfo::Mode rmode = RelocInfo::NONE);
 
   // [base + index*scale + disp/r]
   explicit Operand(Register base,
@@ skipping 448 matching lines @@
   void fst_d(const Operand& adr);
 
   void fild_s(const Operand& adr);
   void fild_d(const Operand& adr);
 
   void fist_s(const Operand& adr);
 
   void fistp_s(const Operand& adr);
   void fistp_d(const Operand& adr);
 
+  // The fisttp instructions require SSE3.
   void fisttp_s(const Operand& adr);
   void fisttp_d(const Operand& adr);
 
   void fabs();
   void fchs();
   void fcos();
   void fsin();
 
   void fadd(int i);
   void fsub(int i);
@@ skipping 206 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_