[turbofan] Support for %_DoubleHi, %_DoubleLo and %_ConstructDouble.

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 1000 matching lines @@
   };
 
   void roundsd(XMMRegister dst, XMMRegister src, RoundingMode mode);
 
   void movmskpd(Register dst, XMMRegister src);
   void movmskps(Register dst, XMMRegister src);
 
   void cmpltsd(XMMRegister dst, XMMRegister src);
   void pcmpeqd(XMMRegister dst, XMMRegister src);
 
+  void punpckldq(XMMRegister dst, XMMRegister src);
+  void punpckhdq(XMMRegister dst, XMMRegister src);
+
   void movdqa(XMMRegister dst, const Operand& src);
   void movdqa(const Operand& dst, XMMRegister src);
   void movdqu(XMMRegister dst, const Operand& src);
   void movdqu(const Operand& dst, XMMRegister src);
   void movdq(bool aligned, XMMRegister dst, const Operand& src) {
     if (aligned) {
       movdqa(dst, src);
     } else {
       movdqu(dst, src);
     }
@@ skipping 382 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_