From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id EA2F438B3439; Wed, 12 Jan 2022 05:58:01 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EA2F438B3439
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/98348] [10 Regression] GCC 10.2 AVX512 Mask regression
 from GCC 9
Date: Wed, 12 Jan 2022 05:58:01 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 10.2.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-98348-4-BV62nsQ2Xe@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-98348-4@http.gcc.gnu.org/bugzilla/>
References: <bug-98348-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 12 Jan 2022 05:58:02 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98348

--- Comment #24 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:d5e7b9fd184c22464d8724ff748e1f7ce0cd6bce

commit r11-9455-gd5e7b9fd184c22464d8724ff748e1f7ce0cd6bce
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Aug 30 15:05:14 2021 +0800

    Unify UNSPEC_MASKED_EQ/GT to the form of UNSPEC_PCMP.

    Currently for evex vpcmpeqb instruction, we have two forms of rtl
    template representation, one is (unspec [op1 op2] UNSPEC_MASK_EQ), the
    other is (unspec [op1, op2, const_int 0] UNSPEC_PCMP), which increases
    the maintenance burden, such as optimization (not: vpcmpeqb)
    to (vpcmpneqb) requires two define_insn_and_split to match the two
    forms respectively, this patch removes UNSPEC_MASK_EQ/GT, unifying
    them into the form of UNSPEC_PCMP.

    gcc/ChangeLog:

            PR target/98348
            * config/i386/sse.md (*<avx512>_ucmp<mode>3_1): Change from
            define_split to define_insn_and_split.
            (*avx2_eq<mode>3): Removed.
            (<avx512>_eq<mode>3<mask_scalar_merge_name>): Adjust pattern
            (<avx512>_eq<mode>3<mask_scalar_merge_name>_1): Rename to ..
            (*<avx512>_eq<mode>3<mask_scalar_merge_name>_1): .. this, and
            adjust pattern.
            (*avx2_gt<mode>3): Removed.
            (<avx512>_gt<mode>3<mask_scalar_merge_name>): Change from
            define_insn to define_expand, and adjust pattern.
            (UNSPEC_MASKED_EQ, UNSPEC_MASKED_GT): Removed.

    gcc/testsuite/ChangeLog:

            PR target/98348
            * gcc.target/i386/avx512bw-vpcmpeqb-1.c: Adjust testcase.
            * gcc.target/i386/avx512bw-vpcmpeqw-1.c: Ditto.
            * gcc.target/i386/avx512bw-vpcmpgtb-1.c: Ditto.
            * gcc.target/i386/avx512bw-vpcmpgtw-1.c: Ditto.
            * gcc.target/i386/avx512f-vpcmpeqd-1.c: Ditto.
            * gcc.target/i386/avx512f-vpcmpeqq-1.c: Ditto.
            * gcc.target/i386/avx512f-vpcmpgtd-1.c: Ditto.
            * gcc.target/i386/avx512f-vpcmpgtq-1.c: Ditto.
            * gcc.target/i386/avx512vl-vpcmpeqd-1.c: Ditto.
            * gcc.target/i386/avx512vl-vpcmpeqq-1.c: Ditto.
            * gcc.target/i386/avx512vl-vpcmpgtd-1.c: Ditto.
            * gcc.target/i386/avx512vl-vpcmpgtq-1.c: Ditto.
            * gcc.target/i386/bitwise_mask_op-1.c: Ditto.
            * gcc.target/i386/bitwise_mask_op-2.c: Ditto.=