[Bug target/100866] PPC: Inefficient code for vec_revb(vector unsigned short) < P9

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100866

--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by HaoChen Gui <guih...@gcc.gnu.org>:

https://gcc.gnu.org/g:eaba55ffef961c28f6a15d845a4d6b77b8a8bab1

commit r13-3603-geaba55ffef961c28f6a15d845a4d6b77b8a8bab1
Author: Xionghu Luo <xionghu...@tencent.com>
Date:   Wed Oct 12 10:43:38 2022 +0800

    rs6000: Byte reverse V8HI on Power8 by vector rotation.

    gcc/
            PR target/100866
            * config/rs6000/altivec.md: (*altivec_vrl<VI_char>): Named to...
            (altivec_vrl<VI_char>): ...this.
            * config/rs6000/vsx.md (revb_<mode>): Call vspltish and vrlh when
            target is Power8 and mode is V8HI.

    gcc/testsuite/
            PR target/100866
            * gcc.target/powerpc/pr100866-2.c: New.