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Subject: [Bug tree-optimization/96226] Failure to optimize shift+not to rotate
Date: Sat, 05 Dec 2020 00:32:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96226

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

https://gcc.gnu.org/g:625e002396f7d0108f845bfba6a6f4f4fcadad05

commit r11-5756-g625e002396f7d0108f845bfba6a6f4f4fcadad05
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Dec 5 01:31:08 2020 +0100

    i386: Combine splitters followup [PR96226]

    Here is the patch to simplify the newly added combine splitters,
    when we split into 2 insns anyway, no reason to split into the masking
    define_insn_and_split we'd be splitting shortly after.

    2020-12-05  Jakub Jelinek  <jakub@redhat.com>

            PR target/96226
            * config/i386/i386.md (splitter after *<rotate_insn><mode>3_mas=
k,
            splitter after *<rotate_insn><mode>3_mask_1): Drop the masking =
from
            the patterns to split into.=