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29-06-2010 22:03, Bill Longman yazmış: |
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> On 06/29/2010 05:54 PM, Hasan SAHIN wrote: |
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> |
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>> Hello all, |
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>> |
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>> I am using Athlon64 X2 processor with the |
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>> CFLAGS="-march=k8 -O2 -pipe -fomit-frame-pointer" option. |
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>> |
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>> Can I use the -march=native option instead of that? |
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>> |
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> Sorry, Hasan, I dropped my "3"s. |
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> |
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> -msse3 and -march=k8-sse3 |
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> |
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Hi Bill, |
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I have read the safe flags document and it says that : |
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/GCC 4.2 introduces a new -march option, -march=*native*, which |
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automatically detects the features your CPU supports and sets the |
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options appropriately. If you have an Intel or AMD CPU and are using |
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>=sys-devel/gcc-4.2.3, using -march=native is recommended. Do *not* use |
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-march=native if you use distcc on nodes with different architectures as |
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this may produce unusable code. / |
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which I understood, I can use the -march=native option instead of |
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CFLAGS="-march=k8-msse3 -O2 -pipe -fomit-frame-pointer" |
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is it true? |
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Regards, |
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Hasan. |
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