glibc/sysdeps/loongarch/lp64/multiarch/strchrnul-lsx.S
dengjianbo ba67bc8e0a Loongarch: Add ifunc support for strchr{aligned, lsx, lasx} and strchrnul{aligned, lsx, lasx}
These implementations improve the time to run strchr{nul}
microbenchmark in glibc as below:
strchr-lasx       reduces the runtime about 50%-83%
strchr-lsx        reduces the runtime about 30%-67%
strchr-aligned    reduces the runtime about 10%-20%
strchrnul-lasx    reduces the runtime about 50%-83%
strchrnul-lsx     reduces the runtime about 36%-65%
strchrnul-aligned reduces the runtime about 6%-10%
2023-08-17 10:12:18 +08:00

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/* Optimized strchrnul implementation using loongarch LSX SIMD instructions.
Copyright (C) 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/>. */
#define STRCHR __strchrnul_lsx
#define AS_STRCHRNUL
#include "strchr-lsx.S"