[Bug target/102294] memset expansion is sometimes slow for small sizes

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102294

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |hjl.tools at gmail dot com

--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
Please try

https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577889.html

On Intel i7-8559U, I got

[hjl@gnu-cfl-2 gcc]$  ./xgcc -B./ -O2 -o gcc-sse /tmp/x.c 
[hjl@gnu-cfl-2 gcc]$ ./gcc-sse
Elapsed time: 0.534094 s
Elapsed time: 0.502171 s
Elapsed time: 0.454463 s
[hjl@gnu-cfl-2 gcc]$ clang-12 -O2 -o clang-sse /tmp/x.c
[hjl@gnu-cfl-2 gcc]$ ./clang-sse
Elapsed time: 0.608078 s
Elapsed time: 0.575241 s
Elapsed time: 0.454897 s
[hjl@gnu-cfl-2 gcc]$