From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D770C3858C53; Wed, 14 Jun 2023 09:00:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D770C3858C53 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686733233; bh=FGY0HpyXdVSqdPDkLjqy4o4Om5RYyV979VptFcvCJ4M=; h=From:To:Subject:Date:In-Reply-To:References:From; b=QbLpWlHfROBnXV1/5aa49AM/09SlkV5VAv1QWHTUyObXdcGV+99UJbyDC1qlQPI5W lkaQOy9SO3hTqEhF5DEy9EYMq7Sacl1tfTej4xPsCRQQ2n5eNFtTly5qbCrL/OriwB /u00ZWD6s/mHYAwzVqkZV8wY6mRvO71fTNhjBeXY= From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/90094] better handling of x == LONG_MIN on x86-64 Date: Wed, 14 Jun 2023 09:00:33 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 9.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: jakub 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=3D90094 --- Comment #5 from Jakub Jelinek --- One argument against doing it during expansion is that if we need the large constant for other purposes, loading it with movabsq and just doing compari= son is better, the overflow way also clobbers the register which is being compa= red.=