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Am Montag, 16. Dezember 2013, 00:34:13 schrieb Matt Turner: |
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> 3dnow: Use the 3DNow! instruction set |
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> 3dnowext: Use the Enhanced 3DNow! instruction set |
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> mmx: Use the MMX instruction set |
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> mmxext: Use the Extended MMX instruction set (intersection of Enhanced |
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> 3DNow! and SSE instruction sets) (3dnowext or sse in cpuinfo) |
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> sse: Use the SSE instruction set |
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> sse2: Use the SSE2 instruction set |
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> sse3: Use the SSE3 instruction set (pni in cpuinfo) |
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> ssse3: Use the SSSE3 instruction set |
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> sse4_1: Use the SSE 4.1 instruction set |
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> avx: Use the AVX instruction set |
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> avx2: Use the AVX2 instruction set |
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|
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What's the point of these flags? |
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(or to be more precise, are they really justified whenever they are used?) |
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|
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Usually the set of cpu instructions should be controlled by your CFLAGS, and |
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I've been actively patching packages (that do not do manually coded assembly) |
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to make such flags unnecessary. |
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|
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-- |
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|
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Andreas K. Huettel |
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Gentoo Linux developer |
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dilfridge@g.o |
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http://www.akhuettel.de/ |
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