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Jan Oppolzer wrote:
> On Apr 11, 2005 12:55 AM, Andrej Kacian <ticho@g.o> wrote:
>
>>>1)gflag -march=athlon-xp zapina 3dnow/mmx/sse?? nebo musim navic
>>>dopisovat "-m3dnow -mmmx -msse"?
>>
>>-m3dnow a -mmmx mozes vynechat, -msse musis explicitne doplnit
>
>
> Takze toto je tedy nesmysl? -- As we've pointed out, -march=athlon-xp
> enables mmx, sse, and 3dnow, so there is no point in specifing -mmmx
> -msse and -m3dnow. [1]
>
> 1. http://forums.gentoo.org/viewtopic.php?p=275851
>
Jak pravi `man gcc` ohledne -mfpmath=sse:
"For i387 you need to use -march=cpu-type, -msse or -msse2
switches to enable SSE extensions and make this option effec-
tive. For x86-64 compiler, these extensions are enabled by
default."
Z prvni vety to vypada, ze -march s vhodnym parametrem zaridi -msse,
event. i -msse2.
-jkt
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