8000 BUILD: Disable MMX registers when building with -mavx512f · numpy/numpy@b3eed14 · GitHub
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BUILD: Disable MMX registers when building with -mavx512f
Work around for a bug in gcc compiler. When using several kmask variables __mmask16/__mmask8, the compiler sometimes uses %mmx registers to save them on to the stack which corrupts the x87 stack.
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‎numpy/distutils/ccompiler_opt.py

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@@ -346,7 +346,7 @@ class attribute `conf_features`, also its override
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FMA4 = dict(flags="-mfma4"),
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FMA3 = dict(flags="-mfma"),
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AVX2 = dict(flags="-mavx2"),
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AVX512F = dict(flags="-mavx512f"),
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AVX512F = dict(flags="-mavx512f -mno-mmx"),
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AVX512CD = dict(flags="-mavx512cd"),
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AVX512_KNL = dict(flags="-mavx512er -mavx512pf"),
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AVX512_KNM = dict(

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