[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 #16 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:9d68cba5eb20442f8075b8f92d1b20a00022852f

commit r13-4423-g9d68cba5eb20442f8075b8f92d1b20a00022852f
Author: Haochen Gui <guih...@gcc.gnu.org>
Date:   Wed Nov 30 15:05:59 2022 +0800

    rs6000: Generates permute index directly for little endian targets
(PR100866)

    2022-10-11  Haochen Gui <guih...@linux.ibm.com>

    gcc/
            PR target/100866
            * config/rs6000/rs6000-call.cc (swap_endian_selector_for_mode):
            Generate permute index directly for little endian targets.
            * config/rs6000/vsx.md (revb_<mode>): Call vprem directly with
            corresponding permute indexes.

    gcc/testsuite/
            PR target/100866
            * gcc.target/powerpc/pr100866-1.c: New.