From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A6F063856DD2; Mon, 16 May 2022 12:13:43 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A6F063856DD2 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/105617] [12/13 regressi] Slp is maybe too aggressive in some/many cases Date: Mon, 16 May 2022 12:13:43 +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: 12.1.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: short_desc keywords 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: Mon, 16 May 2022 12:13:43 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105617 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Regression in code |[12/13 regressi] Slp is |generation for |maybe too aggressive in |_addcarry_u64() |some/many cases Keywords| |missed-optimization --- Comment #1 from Andrew Pinski --- This is just the vectorizer still being too aggressive right before a retur= n. It is a cost model issue and it might not really be an issue in the final c= ode just microbenchmarks.=