mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* Common definition for wmemset/wmemset_chk ifunc selections.
|
|
Copyright (C) 2017-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <init-arch.h>
|
|
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden;
|
|
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) attribute_hidden;
|
|
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned) attribute_hidden;
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_rtm)
|
|
attribute_hidden;
|
|
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden;
|
|
|
|
static inline void *
|
|
IFUNC_SELECTOR (void)
|
|
{
|
|
const struct cpu_features *cpu_features = __get_cpu_features ();
|
|
|
|
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2)
|
|
&& X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
|
|
AVX_Fast_Unaligned_Load, !))
|
|
{
|
|
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512VL))
|
|
{
|
|
if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512))
|
|
return OPTIMIZE (avx512_unaligned);
|
|
|
|
return OPTIMIZE (evex_unaligned);
|
|
}
|
|
|
|
if (CPU_FEATURE_USABLE_P (cpu_features, RTM))
|
|
return OPTIMIZE (avx2_unaligned_rtm);
|
|
|
|
if (X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
|
|
Prefer_No_VZEROUPPER, !))
|
|
return OPTIMIZE (avx2_unaligned);
|
|
}
|
|
|
|
return OPTIMIZE (sse2_unaligned);
|
|
}
|