From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 345893948800; Mon, 30 Mar 2020 07:59:19 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 345893948800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1585555159; bh=sc0DvEiq0ME4+40NMbUahxgzp3WsQKSafissDFXNpqo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=a0U4zyohcm/yJBxj1CuDfMyvlAQxch9k10zJ/v4LLJxRksEPlRtCBidOo3qndE6j0 8zJgAvb1JMeBuKmPgfUQwVFahmGVeV9J3RVMExDFJ1xjwfLfUdtFDYpXe0+rN4UEvM B+UdpuLiZLXmeMOIAOlhvX+O8S6DQ2d6phJsx8mo= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/94373] 548.exchange2_r run time is 7-12% worse than GCC 9 at -O2 and generic march/mtune Date: Mon, 30 Mar 2020 07:59:19 +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: 10.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth 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: 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, 30 Mar 2020 07:59:19 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94373 --- Comment #4 from Richard Biener --- Note the cited commit simply caused more complete unrolling to happen. Too much actually which is why I reverted it. Note GCC 9.2 does not have that = more unrolling so the difference must be something else in the end.=