From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 86256398643A; Wed, 16 Sep 2020 14:18:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 86256398643A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1600265935; bh=0txuOoAfvHxp1x2RTrVi3x7SAdF0pAyYIlJn+kVMp6w=; h=From:To:Subject:Date:In-Reply-To:References:From; b=FZJrgueM8pJqusOI22Gx6jILd8q5leOPvUXf3qGmHbfcbkZBDw9eYg4/TfjmcP4Tr TxLmCBh+hkvGueTYwApE2I4Q/ga5/rYIv8Gx8Sq6lHZckc0nEODFm83sduGqo1uERx wIOx3C6vepHnBF4NHBDIKBCSmlt+wbWPRwFtIJ7o= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/97071] Fails to CSE / inherit constant pool load Date: Wed, 16 Sep 2020 14:18:55 +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: 11.0 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: Wed, 16 Sep 2020 14:18:55 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97071 --- Comment #5 from Richard Biener --- Related and more difficult case where the add is first and we'd want to change the load of -3 to a load of 3 so we can CSE the 3 for the multiplication. double foo (double x) { return (x + -3.) * 3.; }=