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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-01-31 16:28:42 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-02-06 16:19:35 -0300 |
| commit | 3709ed904770b440d68385f3da259008cdf642a6 (patch) | |
| tree | ada3808a06f3091eec042eee93c89a9cbcad13d8 /string | |
| parent | 30c1dfde313fa01e195e0759915f1356effdb7d6 (diff) | |
| download | glibc-3709ed904770b440d68385f3da259008cdf642a6.zip glibc-3709ed904770b440d68385f3da259008cdf642a6.tar.gz glibc-3709ed904770b440d68385f3da259008cdf642a6.tar.bz2 | |
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>
Diffstat (limited to 'string')
| -rw-r--r-- | string/strcpy.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/string/strcpy.c b/string/strcpy.c index 0345c71..d945d8f 100644 --- a/string/strcpy.c +++ b/string/strcpy.c @@ -19,6 +19,9 @@ #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 @@ -28,6 +31,7 @@ char * STRCPY (char *dest, const char *src) { - return memcpy (dest, src, strlen (src) + 1); + __stpcpy (dest, src); + return dest; } libc_hidden_builtin_def (strcpy) |