mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 01:40:07 +00:00
2f5524cc53
The latest implementations of memcpy are actually faster than the Falkor implementations [1], so remove the falkor/phecda ifuncs for memcpy and the now unused IS_FALKOR/IS_PHECDA defines. [1] https://sourceware.org/pipermail/libc-alpha/2022-December/144227.html Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Multiple versions of memcpy. AARCH64 version.
|
|
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/>. */
|
|
|
|
/* Define multiple versions only for the definition in libc. */
|
|
|
|
#if IS_IN (libc)
|
|
/* Redefine memcpy so that the compiler won't complain about the type
|
|
mismatch with the IFUNC selector in strong_alias, below. */
|
|
# undef memcpy
|
|
# define memcpy __redirect_memcpy
|
|
# include <string.h>
|
|
# include <init-arch.h>
|
|
|
|
extern __typeof (__redirect_memcpy) __libc_memcpy;
|
|
|
|
extern __typeof (__redirect_memcpy) __memcpy_generic attribute_hidden;
|
|
extern __typeof (__redirect_memcpy) __memcpy_thunderx attribute_hidden;
|
|
extern __typeof (__redirect_memcpy) __memcpy_thunderx2 attribute_hidden;
|
|
extern __typeof (__redirect_memcpy) __memcpy_a64fx attribute_hidden;
|
|
extern __typeof (__redirect_memcpy) __memcpy_sve attribute_hidden;
|
|
extern __typeof (__redirect_memcpy) __memcpy_mops attribute_hidden;
|
|
|
|
static inline __typeof (__redirect_memcpy) *
|
|
select_memcpy_ifunc (void)
|
|
{
|
|
INIT_ARCH ();
|
|
|
|
if (mops)
|
|
return __memcpy_mops;
|
|
|
|
if (sve && HAVE_AARCH64_SVE_ASM)
|
|
{
|
|
if (IS_A64FX (midr))
|
|
return __memcpy_a64fx;
|
|
return __memcpy_sve;
|
|
}
|
|
|
|
if (IS_THUNDERX (midr))
|
|
return __memcpy_thunderx;
|
|
|
|
if (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr))
|
|
return __memcpy_thunderx2;
|
|
|
|
return __memcpy_generic;
|
|
}
|
|
|
|
libc_ifunc (__libc_memcpy, select_memcpy_ifunc ());
|
|
|
|
# undef memcpy
|
|
strong_alias (__libc_memcpy, memcpy);
|
|
#endif
|