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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 rtl-optimization/110237] gcc.dg/torture/pr58955-2.c is
 miscompiled by RTL scheduling after reload
Date: Thu, 29 Jun 2023 01:27:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110237

--- Comment #23 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by hongtao Liu
<liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:ad1a3da97f7c4a85778f91b235a8d936bb1c829b

commit r11-10884-gad1a3da97f7c4a85778f91b235a8d936bb1c829b
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Jun 26 21:07:09 2023 +0800

    Refine maskstore patterns with UNSPEC_MASKMOV.

    Similar like r14-2070-gc79476da46728e

    If mem_addr points to a memory region with less than whole vector size
    bytes of accessible memory and k is a mask that would prevent reading
    the inaccessible bytes from mem_addr, add UNSPEC_MASKMOV to prevent
    it to be transformed to any other whole memory access instructions.

    gcc/ChangeLog:

            PR rtl-optimization/110237
            * config/i386/sse.md (<avx512>_store<mode>_mask): Refine with
            UNSPEC_MASKMOV.
            (maskstore<mode><avx512fmaskmodelower): Ditto.
            (*<avx512>_store<mode>_mask): New define_insn, it's renamed
            from original <avx512>_store<mode>_mask.=