From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id BD7EF385BF83; Tue, 14 Apr 2020 06:42:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BD7EF385BF83 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1586846558; bh=LE9RgF0liqxDNCf1jFHKnvkRbDk5kuXWYejlGcXRTkA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=fWbyuhUYXCv2tDNnjV1cEaOKswD/vh7xy/Ai7jrQla93Oiva1g7FShK2Z5TsaTC4c Sfjk9+BSm7wmM5X2Fu2GEgACqHAh1i0oCeq5fGeJnAlWlwUPUp2t7HXMgR/FA+geLO Z/fFo6p5fkPDV9aEr0N2zqeFX4ziVgXLsTdD2cqE= From: "segher at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/61837] missed loop invariant expression optimization Date: Tue, 14 Apr 2020 06:42:38 +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: 5.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: segher at gcc dot gnu.org X-Bugzilla-Status: NEW 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: Tue, 14 Apr 2020 06:42:38 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D61837 --- Comment #6 from Segher Boessenkool --- But -funswitch-loops is much stronger than we want here, and the wrong thing to use at -O2 (it often generates *slower* code!)=