glibc/string/strcpy.c
Adhemerval Zanella 3709ed9047 string: Improve generic strcpy
Now that stpcpy is vectorized based on op_t, it should be better to
call it instead of strlen plus memcpy.

Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64-linux-gnu,
and powerpc-linux-gnu by removing the arch-specific assembly
implementation and disabling multi-arch (it covers both LE and BE
for 64 and 32 bits).

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
2023-02-06 16:19:35 -03:00

38 lines
1.1 KiB
C

/* Copyright (C) 1991-2023 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 <stddef.h>
#include <string.h>
#undef strcpy
/* Disable internal stpcpy optimization, otherwise the __stpcpy might it
generate a strcpy call. */
#undef __stpcpy
#ifndef STRCPY
# define STRCPY strcpy
#endif
/* Copy SRC to DEST. */
char *
STRCPY (char *dest, const char *src)
{
__stpcpy (dest, src);
return dest;
}
libc_hidden_builtin_def (strcpy)