[Bug rtl-optimization/122343] Propagate volatile memory operands

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122343

--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:bde7cf998666c449f353d928c9cb70de776c7555

commit r16-5953-gbde7cf998666c449f353d928c9cb70de776c7555
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Dec 8 13:32:55 2025 +0800

    x86: Compile avx2-vpcmpgtq-1.c with -fno-fuse-ops-with-volatile-access

    When -march=cascadelake is added, we generate

            vmovdqa x(%rip), %ymm0
            vpcmpq  $1, x(%rip), %ymm0, %k0
            vpmovm2q        %k0, %ymm0
            vmovdqa %ymm0, x(%rip)

    instead of

            vmovdqa x(%rip), %ymm1
            vmovdqa x(%rip), %ymm0
            vpcmpgtq        %ymm1, %ymm0, %ymm0
            vmovdqa %ymm0, x(%rip)

    Compile avx2-vpcmpgtq-1.c with -fno-fuse-ops-with-volatile-access to
    generate vpcmpgtq instead of vpcmpq.

            PR target/122343
            * gcc.target/i386/avx2-vpcmpgtq-1.c: Compile with
            -fno-fuse-ops-with-volatile-access.

    Signed-off-by: H.J. Lu <hjl.tools@gmail.com>