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On Fri, Oct 09, 2020 at 12:26:17AM +0000, Jonathan Yong wrote |
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> |
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> I have a skylake system: |
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> CPU_FLAGS_X86: aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt rdrand |
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> sse sse2 sse3 sse4_1 sse4_2 ssse3 |
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A heavy-handed 2-part solution |
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1) remove "avx2" from CPU_FLAGS_X86 |
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2) assuming you have "-march=native" or "-march=skylake" in your CFLAGS |
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and CXXFLAGS, follow that with "-march=no-avx2". e.g... |
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"-march=skylake -march=no-avx2" |
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This tells gcc "I don't have avx2, so don't compile any avx2 code". |
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I think the performance loss will be minimal. |
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-- |
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Walter Dnes <waltdnes@××××××××.org> |
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I don't run "desktop environments"; I run useful applications |
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