(MMX_X86movd2w (x86mmx VR64:$src)))],
IIC_MMX_MOV_REG_MM>, Sched<[WriteMove]>;
+let isBitcast = 1 in
def MMX_MOVD64to64rr : MMXRI<0x6E, MRMSrcReg, (outs VR64:$dst), (ins GR64:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set VR64:$dst, (bitconvert GR64:$src))],
// These are 64 bit moves, but since the OS X assembler doesn't
// recognize a register-register movq, we write them as
// movd.
-let SchedRW = [WriteMove] in {
+let SchedRW = [WriteMove], isBitcast = 1 in {
def MMX_MOVD64from64rr : MMXRI<0x7E, MRMDestReg,
(outs GR64:$dst), (ins VR64:$src),
"movd\t{$src, $dst|$dst, $src}",