X64/Win64: Alternative implementation of fmod in general.

src/x64/assembler-x64.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 988 matching lines @@
   void fld(int i);
 
   void fld1();
   void fldz();
 
   void fld_s(const Operand& adr);
   void fld_d(const Operand& adr);
 
   void fstp_s(const Operand& adr);
   void fstp_d(const Operand& adr);
+  void fstp(int index);
 
   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);
 
   void fisttp_s(const Operand& adr);
@@ skipping 30 matching lines @@
 
   void fsin();
   void fcos();
 
   void frndint();
 
   void sahf();
 
   // SSE2 instructions
   void movsd(const Operand& dst, XMMRegister src);
-  void movsd(Register src, XMMRegister dst);
-  void movsd(XMMRegister dst, Register src);
+  void movsd(XMMRegister src, XMMRegister dst);
   void movsd(XMMRegister src, const Operand& dst);
 
   void cvttss2si(Register dst, const Operand& src);
   void cvttsd2si(Register dst, const Operand& src);
 
   void cvtlsi2sd(XMMRegister dst, const Operand& src);
   void cvtlsi2sd(XMMRegister dst, Register src);
   void cvtqsi2sd(XMMRegister dst, const Operand& src);
   void cvtqsi2sd(XMMRegister dst, Register src);
 
@@ skipping 284 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_H_