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 EB7AD398E468; Fri, 19 Feb 2021 20:20:40 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB7AD398E468
From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/97366] [8/9/10/11 Regression] Redundant load with
 SSE/AVX vector intrinsics
Date: Fri, 19 Feb 2021 20:20:40 +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: 11.0
X-Bugzilla-Keywords: missed-optimization, ra
X-Bugzilla-Severity: normal
X-Bugzilla-Who: vmakarov at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 8.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-97366-4-zrFC7gVq5k@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-97366-4@http.gcc.gnu.org/bugzilla/>
References: <bug-97366-4@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: Fri, 19 Feb 2021 20:20:41 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97366

--- Comment #8 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I've tried different approaches to fix it.  The best patch I have now is in=
 the
attachment.

Unfortunately, the best patch results in two new failures on ppc64 (other
patches are even worse):

gcc.target/powerpc/dform-3.c scan-assembler-not mfvsrd
gcc.target/powerpc/dform-3.c scan-assembler-not mfvsrld

I'll think more how to avoid these 2 failures.  If I succeed, I'll submit a
patch.  But there is probability that the PR will not be fixed at all.=