From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 28CB13858D39; Wed, 21 Feb 2024 00:06:04 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 28CB13858D39 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1708473964; bh=yFY/22mfPzPiZb3SY1U2Y0Wao5AUAn9BInxZq3l0TBA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=V5wK2uuPvqPVx7bTgkP6+IJ6PLhpp0u4Mu6Cc4cO9OLQ04aWPszz3tYDkUtH5H2GL MZwRmoshSqUxW0a04Zz0khy3LcN972O2XWWo/JawLUg4/fysB89BYSaFyC2lwfCRYr 2GkhsOAusDlvdZv4MnciSj7bcayTro2TTNyYbgj4= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/114010] Unwanted effects of using SSA free lists. Date: Wed, 21 Feb 2024 00:06:03 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: 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: blocked 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=3D114010 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |53947 --- Comment #1 from Andrew Pinski --- >The most important case I have observed is that the vectorizer can fail or= create inferior code with more shuffles/moves when the SSA names aren't mo= notonically increasing. That should not be true. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53947 [Bug 53947] [meta-bug] vectorizer missed-optimizations=