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/* Multiple versions of wmemcmp
All versions must be listed in ifunc-impl-list.c.
Copyright (C) 2011-2017 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <init-arch.h>
/* Define multiple versions only for the definition in libc. */
#if IS_IN (libc)
.text
ENTRY(wmemcmp)
.type wmemcmp, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
jnz 1f
HAS_ARCH_FEATURE (AVX2_Usable)
jz 1f
HAS_CPU_FEATURE (MOVBE)
jz 1f
HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
jz 1f
leaq __wmemcmp_avx2_movbe(%rip), %rax
ret
1: HAS_CPU_FEATURE (SSSE3)
jnz 2f
leaq __wmemcmp_sse2(%rip), %rax
ret
2: HAS_CPU_FEATURE (SSE4_1)
jz 3f
leaq __wmemcmp_sse4_1(%rip), %rax
ret
3: leaq __wmemcmp_ssse3(%rip), %rax
ret
END(wmemcmp)
#endif
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