[PATCH v11 10/29] string: Improve generic stpcpy

[Richard Henderson]

On 2/1/23 07:03, Adhemerval Zanella wrote:
> It follows the strategy:
> 
>    - Align the destination on word boundary using byte operations.
> 
>    - If source is also word aligned, read a word per time, check for
>      null (using has_zero from string-fzb.h), and write the remaining
>      bytes.
> 
>    - If source is not word aligned, loop by aligning the source, and
>      merging the result of two reads.  Similar to aligned case,
>      check for null with has_zero, and write the remaining bytes if
>      null is found.
> 
> 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).
> ---
>   string/stpcpy.c | 92 +++++++++++++++++++++++++++++++++++++++++++++----
>   1 file changed, 86 insertions(+), 6 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~