search for: 6yy8aw4d

Hi, Anton > On Win64 general purpose registers shadow xmm and vice versa, so, say, > if you put argument into ecx, the xmm0 is marked as already occupied, > if you put argument into xmm1, edx is marked as occupied, etc. I think ecx and xmm0 are physical different registers (not like ecx and cx), right? So why we cannot use xmm0 while ecx has been used? Is it just a rule or there are