From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id AE8CD385843D; Fri, 25 Feb 2022 08:31:13 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AE8CD385843D From: "lili.cui at intel dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/101908] [12 regression] cray regression with -O2 -ftree-slp-vectorize compared to -O2 Date: Fri, 25 Feb 2022 08:31:13 +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: 12.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: lili.cui at intel dot com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Feb 2022 08:31:13 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101908 --- Comment #24 from cuilili --- (In reply to cuilili from comment #23) > (In reply to Richard Biener from comment #17) > > I do wonder though how CLX is fine with such access pattern ;) (did yo= u test > > with just -O2?) >=20 Sorry, correct w/ and w/t order. Actually CLX also has STLF issues, there is 13.7% regression when comparing "gcc trunk + -O2" w/t and w/ "-fno-tree-vectorize"=