forked from rpms/glibc
24 lines
912 B
Diff
24 lines
912 B
Diff
commit 23af890b3f04e80da783ba64e6b6d94822e01d54
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Author: Ondřej Hošek <ondra.hosek@gmail.com>
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Date: Wed Aug 26 04:26:50 2020 +0200
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x86-64: Fix FMA4 detection in ifunc [BZ #26534]
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A typo in commit 107e6a3c2212ba7a3a4ec7cae8d82d73f7c95d0b causes the
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FMA4 code path to be taken on systems that support FMA, even if they do
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not support FMA4. Fix this to detect FMA4.
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diff --git a/sysdeps/x86_64/fpu/multiarch/ifunc-fma4.h b/sysdeps/x86_64/fpu/multiarch/ifunc-fma4.h
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index 76c677198dac5cb0..6cb70ce25209ee15 100644
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--- a/sysdeps/x86_64/fpu/multiarch/ifunc-fma4.h
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+++ b/sysdeps/x86_64/fpu/multiarch/ifunc-fma4.h
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@@ -32,7 +32,7 @@ IFUNC_SELECTOR (void)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX2))
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return OPTIMIZE (fma);
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- if (CPU_FEATURE_USABLE_P (cpu_features, FMA))
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+ if (CPU_FEATURE_USABLE_P (cpu_features, FMA4))
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return OPTIMIZE (fma4);
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return OPTIMIZE (sse2);
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