From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 3C511385801C; Wed, 10 Jan 2024 17:11:52 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3C511385801C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1704906712; bh=6xK345q6xcD2f+qaqeHoUo4g1IRT0TAVbGYAEe5xkXY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=MBj8JBvKsQBYpEEtcAMl2Fq7XRS51jBf1gRPYm+cUMGJqNLcGw4laNb/NdDzFYzL7 +ob4unmjgTegGCzOQsavRCahekaffZNeJDECLBqUahDE+aEnpphzlJeTWov/avWVmN yQL3/UVg80H9e0KA/XQ0O65YRU9WfmRndL6UHKKY= From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/113301] [12/13/14 Regression] Missed optimization: (1/(x+1))/2 => 0 since gcc-12 Date: Wed, 10 Jan 2024 17:11:50 +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: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.4 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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=3D113301 Jakub Jelinek changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |aldyh at gcc dot gnu.org --- Comment #4 from Jakub Jelinek --- Even then, I wonder why ranger doesn't figure this out. (x+1u) <=3D 2 ? x : 0 must have a range [-1, 1] and [-1, 1] / [2, 2] range should be [0, 0], no?=