Re: VC8.0 and CMOV

Does using "__asm" help?  You could hand-code the instructions, then.
confer:  <http://msdn2.microsoft.com/EN-US/library/45yd4tzz(VS.80).aspx>,
which is the VC8.0 specific page about using __asm anywhere a
statement could appear.

It could be that the scheduler doesn't know that you are guaranteeing
that the program will be run on a Pentium Pro or better, system.
(Pentium Pro is when that instruction was added.)  Of course, now that
I go to look for a reference to this on the microsoft web site, this
may not be a concern.  I'm showing my age. :)

--andy

On Nov 23, 2007 4:45 AM, Alen Ladavac <[email protected]> wrote:
> Hi all,
>
> Is there any way to make MSVC8.0 to generate CMOV instructions? I have
> some performance-critical loops, with a lot of small ifs, where it
> generates branches, and I'd like it to put cmov/fcmov there instead.
> Allegedly, it is able to do so, but /O2 doesn't seem to help. I can't
> even find any intrinsic to do that. Any ideas appreciated.
>
> Thanks,
> Alen
>
>
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