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23af890b3f
A typo in commit 107e6a3c22 causes the
FMA4 code path to be taken on systems that support FMA, even if they do
not support FMA4. Fix this to detect FMA4.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Common definition for ifunc selections optimized with AVX2/FMA and
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FMA4.
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Copyright (C) 2017-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <init-arch.h>
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extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (fma) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (fma4) attribute_hidden;
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static inline void *
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IFUNC_SELECTOR (void)
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{
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const struct cpu_features* cpu_features = __get_cpu_features ();
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if (CPU_FEATURE_USABLE_P (cpu_features, FMA)
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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, FMA4))
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return OPTIMIZE (fma4);
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return OPTIMIZE (sse2);
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}
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