Re: [GD-Windows] VC8.0 and CMOV

[Andrew F. <pb...@gm...>]

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 <ale...@cr...> 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
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2005.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_id=555
>