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Enable Enhanced Instruction Set

I'd like to know if there is a compiler definition set after this compiler
option, so I can adjust my code to use see/sse2 instructions as well in
those build configurations which have this option turned on.
Nov 17 '05 #1
2 1947
Gabest wrote:
I'd like to know if there is a compiler definition set after this
compiler option, so I can adjust my code to use see/sse2 instructions
as well in those build configurations which have this option turned
on.


This is undocumented but...

_M_IX86_FP = null for "normal" builds
_M_IX86_FP = 1 for /arch:SSE
_M_IX86_FP = 2 for /arch:SSE2

Being undocumented, I'd expect that this macro could change meaning or
disappear in any later version. However, these values do hold for VC7.1 and
Whidbey.

-cd
Nov 17 '05 #2
> This is undocumented but...

_M_IX86_FP = null for "normal" builds
_M_IX86_FP = 1 for /arch:SSE
_M_IX86_FP = 2 for /arch:SSE2

Being undocumented, I'd expect that this macro could change meaning or
disappear in any later version. However, these values do hold for VC7.1 and Whidbey.

-cd


I really hoped they existed, thank you very much!

Nov 17 '05 #3

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