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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/108177] MVE predicated stores to same address get
 optimized away
Date: Thu, 18 May 2023 10:43:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108177

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Stam Markianos-Wright
<stammark@gcc.gnu.org>:

https://gcc.gnu.org/g:bb113a56e31159f4fbe26cc06ee25e4972ce74b5

commit r12-9610-gbb113a56e31159f4fbe26cc06ee25e4972ce74b5
Author: Andre Vieira <andre.simoesdiasvieira@arm.com>
Date:   Tue Jan 24 16:59:23 2023 +0000

    arm: Make MVE masked stores read memory operand [PR 108177]

    This patch adds the memory operand of MVE masked stores as input operan=
ds
to
    mimic the 'partial' writes, to prevent erroneous write-after-write
    optimizations as described in the PR.

    gcc/ChangeLog:

            PR target/108177
            * config/arm/mve.md (mve_vstrbq_p_<supf><mode>, mve_vstrhq_p_fv=
8hf,
            mve_vstrhq_p_<supf><mode>, mve_vstrwq_p_<supf>v4si): Add memory
operand
            as input operand.

    gcc/testsuite/ChangeLog:

            * gcc.target/arm/mve/pr108177-1-run.c: New test.
            * gcc.target/arm/mve/pr108177-1.c: New test.
            * gcc.target/arm/mve/pr108177-10-run.c: New test.
            * gcc.target/arm/mve/pr108177-10.c: New test.
            * gcc.target/arm/mve/pr108177-11-run.c: New test.
            * gcc.target/arm/mve/pr108177-11.c: New test.
            * gcc.target/arm/mve/pr108177-12-run.c: New test.
            * gcc.target/arm/mve/pr108177-12.c: New test.
            * gcc.target/arm/mve/pr108177-13-run.c: New test.
            * gcc.target/arm/mve/pr108177-13.c: New test.
            * gcc.target/arm/mve/pr108177-14-run.c: New test.
            * gcc.target/arm/mve/pr108177-14.c: New test.
            * gcc.target/arm/mve/pr108177-2-run.c: New test.
            * gcc.target/arm/mve/pr108177-2.c: New test.
            * gcc.target/arm/mve/pr108177-3-run.c: New test.
            * gcc.target/arm/mve/pr108177-3.c: New test.
            * gcc.target/arm/mve/pr108177-4-run.c: New test.
            * gcc.target/arm/mve/pr108177-4.c: New test.
            * gcc.target/arm/mve/pr108177-5-run.c: New test.
            * gcc.target/arm/mve/pr108177-5.c: New test.
            * gcc.target/arm/mve/pr108177-6-run.c: New test.
            * gcc.target/arm/mve/pr108177-6.c: New test.
            * gcc.target/arm/mve/pr108177-7-run.c: New test.
            * gcc.target/arm/mve/pr108177-7.c: New test.
            * gcc.target/arm/mve/pr108177-8-run.c: New test.
            * gcc.target/arm/mve/pr108177-8.c: New test.
            * gcc.target/arm/mve/pr108177-9-run.c: New test.
            * gcc.target/arm/mve/pr108177-9.c: New test.
            * gcc.target/arm/mve/pr108177-main.x: New test include.
            * gcc.target/arm/mve/pr108177.x: New test include.

    (cherry picked from commit c1093923733a1072a237f112e3239b5ebd88eadd)=