XMM regs destroyed.

[jj2007]

Hi Jean-Marie,

Whether the test fails or not (you must find a volunteer who is willing to overheat his CPU for an hour - good luck 8)): You can't release a prog that relies on an undocumented feature, i.e. "my tests showed that ReadFile doesn't trash xmm0". In the next Windows update, it might trash xmm0...

Apart from this warning: Welcome to the forum :icon14:

P.S.: We have a reputation of being able to speed up slow programs. Show us your innermost loop...

[Jean-Marie]

Thanks jj2007,
Yes, now I have figured out that I'll have to make some changes. I was just curious to know if I was lucky or not this time (habitually I'm not).
There are a lot of "hotspots" in my program, the main one beeing the Stretch function. But may be I'll have to discuss this on a new thread (don't want to pollute this one).

[Gunther]

Hi Jean-Marie,

welcome to the forum. Show us your code and we'll see what we can do.

Gunther