[Bug target/89954] missed optimization for signed extension for x86-64

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89954

--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>:

https://gcc.gnu.org/g:6f4459c478b1c09e4b5e7d629fbf46d2a4fe4560

commit r12-3991-g6f4459c478b1c09e4b5e7d629fbf46d2a4fe4560
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Thu Sep 30 19:33:49 2021 +0200

    i386: Eliminate sign extension after logic operation [PR89954]

    Convert (sign_extend:WIDE (any_logic:NARROW (memory, immediate)))
    to (any_logic:WIDE (sign_extend (memory)), (sign_extend (immediate))).
    This eliminates sign extension after logic operation.

    2021-09-30  Uroš Bizjak  <ubiz...@gmail.com>

    gcc/
            PR target/89954
            * config/i386/i386.md
            (sign_extend:WIDE (any_logic:NARROW (memory, immediate))
splitters):
            New splitters.

    gcc/testsuite/
            PR target/89954
            * gcc.target/i386/pr89954.c: New test.