From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 556AB385840D; Thu, 1 Jun 2023 12:28:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 556AB385840D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685622498; bh=Oijq48WEGRSeR5PAnYD0IUegFyqV9EAQX9Ms5ZtKKx0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=eisgzZ7KBel5FviGQ8Q9DJ3EUMpqcABadCR7K0s+lY386QUD9q/4bh6IVYdnBmCBh GmU40Wo8bnsWVtut9YElV6t936apYtfHu8MpGw/J0ttroviN66MF7RQgA1Zef9HEj3 HubKVy71jMruJNCBYiPMGCgV8oRK6UtAC9+5tZsU= From: "hubicka at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/109812] GraphicsMagick resize is a lot slower in GCC 13.1 vs Clang 16 on Intel Raptor Lake Date: Thu, 01 Jun 2023 12:28:18 +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: 13.1.1 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: hubicka 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109812 --- Comment #17 from Jan Hubicka --- I was also thinking of DCE. It looks like plausible idea. It may leads to a surprise where you sture same undefined variable to two places and later compare them for equality, but that is undefined anyway.=