From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D79583858C74; Tue, 5 Mar 2024 07:31:01 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D79583858C74 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1709623861; bh=hmCyZ/DOOI0wNK8ZiRoZ9HMUddLLKZ+o2zuULCKl1Sw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=jnGkPG71xb6YzOYNrH3jAJLKfqKmhjVZaimDvePQ7eMF/Jx66YlArMDXekp0W08c0 G45p1u4gl1B6xEtPtD84gdXqCubGbDw+4Nair+WBj2w+v4zawI8Qz11trLc1KXwbSB Lpayn02b5YbcqpjHO3Z4HG25U/OeEO3VFyCL7Rfw= From: "krebbel at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/101523] Huge number of combine attempts Date: Tue, 05 Mar 2024 07:31:00 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: compile-time-hog, memory-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: krebbel at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: segher 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101523 --- Comment #14 from Andreas Krebbel --- If my analysis from comment #1 is correct, combine does superfluous steps h= ere. Getting rid of this should not cause any harm, but should be beneficial for other targets as well. I agree that the patch I've proposed is kind of a ha= ck. Do you think this could be turned into a proper fix?=