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On Thu, February 12, 2009 1:34 pm, Zhang Jun wrote: |
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> thanks! |
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> I'm new to gentoo, |
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> I get the CFLAGS from gentoo-wiki( |
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> http://en.gentoo-wiki.com/wiki/Safe_Cflags/AMD#Turion64_.2F_X2_.2F_Ultra |
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> ) |
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> and I am using 32bit linux. |
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> |
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> 2009/2/12 Joost Roeleveld <joost@××××××××.org>: |
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>> On Thu, February 12, 2009 12:52 pm, Zhang Jun wrote: |
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>>> Hi list, |
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>>> |
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>>> my laptop's cpu is AMD Turion64x2, I've installed both 32bits Debian |
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>>> testing and Gentoo on it, |
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>>> from Debian there is no SSE3 in /proc/cpuinfo, |
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>>> and I used CFLAGS="-O2 -march=athlon-xp -fomit-frame-pointer -pipe" on |
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>>> gentoo, and I can not see SSE3 in cpuinfo also, |
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>>> |
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>>> I emerged x86info, and SSE3 is in its output: |
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>>> |
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>>> #x86info |
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>>> x86info v1.21. Dave Jones 2001-2007 |
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>>> Feedback to <davej@××××××.com>. |
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>>> |
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>>> Found 2 CPUs |
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>>> -------------------------------------------------------------------------- |
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>> <snipped output> |
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>> |
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>>> my question is: I can not see SSE3 in cpuinfo because I did not use |
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>>> "-msse3" in CFLAGS ? |
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>> |
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>> Hi, |
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>> |
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>> I would suspect that for your CPU using "-march=athlon-fx" would be more |
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>> beneficial as your CPU has the x86_64 instruction set as well? |
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>> |
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>> -- |
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>> Joost |
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>> |
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|
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Thank you for that link, I wasn't aware of it. |
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Please, for future reference, try to avoid top-posting, it makes following |
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conversations difficult. |
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Try to keep your replies at the bottom of the email. |
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|
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According to that list, you need to add "-msse3" to your CFLAGS. Which |
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makes sense as "-march=athlon-xp" is actually for an older CPU which |
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didn't have sse3 support yet. |
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|
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-- |
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Joost |
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