[Bug target/102483] Reduction of 4 chars can be improved

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102483

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuho...@gcc.gnu.org>:

https://gcc.gnu.org/g:73c535a00bc4dfe9a939cd80facbe79a929cab3e

commit r12-4339-g73c535a00bc4dfe9a939cd80facbe79a929cab3e
Author: liuhongt <hongtao....@intel.com>
Date:   Sat Oct 9 14:34:38 2021 +0800

    Support reduc_{plus,smax,smin,umax,umin}_scal_v4qi.

    gcc/ChangeLog

            PR target/102483
            * config/i386/i386-expand.c (emit_reduc_half): Handle
            V4QImode.
            * config/i386/mmx.md (reduc_<code>_scal_v4qi): New expander.
            (reduc_plus_scal_v4qi): Ditto.

    gcc/testsuite/ChangeLog

            * gcc.target/i386/pr102483.c: New test.
            * gcc.target/i386/pr102483-2.c: New test.