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string: Improve generic strcpy

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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>
This commit is contained in:
Adhemerval Zanella
2023-01-31 16:28:42 -03:00
parent 30c1dfde31
commit 3709ed9047
1 changed files with 5 additions and 1 deletions
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6
string/strcpy.c
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@ -19,6 +19,9 @@
#include <string.h> #include <string.h>
#undef strcpy #undef strcpy
/* Disable internal stpcpy optimization, otherwise the __stpcpy might it
generate a strcpy call. */
#undef __stpcpy
#ifndef STRCPY #ifndef STRCPY
# define STRCPY strcpy # define STRCPY strcpy
@ -28,6 +31,7 @@
char * char *
STRCPY (char *dest, const char *src) STRCPY (char *dest, const char *src)
{ {
return memcpy (dest, src, strlen (src) + 1); __stpcpy (dest, src);
return dest;
} }
libc_hidden_builtin_def (strcpy) libc_hidden_builtin_def (strcpy)