From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A520938618AD; Thu, 21 Dec 2023 20:04:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A520938618AD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1703189078; bh=A+5Pr+k8cEEjOUphsiIliheFK9M4Em59W/w1bhE+irQ=; h=From:To:Subject:Date:In-Reply-To:References:From; b=b9RJbfVO7nzy5ESLlD8e1SPLfL9FaBCxoGT6x/g2dcr3J74Xk14J9nmbP0UExmHa2 GaDXBTlbcGdmLnlhvbsuq3qkoAzJ6Cmww30GxgpSShzBdh+GSFPxHmukP2YxEtIVj0 DJRipnBggAIEH/ubKRi43g1rHZzAPSvwlLVFcaqU= From: "gkm at rivosinc dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/112758] [13/14 Regression] Inconsistent Bitwise AND Operation Result between int and long long int Date: Thu, 21 Dec 2023 20:04:37 +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: 14.0 X-Bugzilla-Keywords: needs-bisection, wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: gkm at rivosinc dot com 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: 13.3 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=3D112758 --- Comment #15 from Greg McGary --- I have a simple patch for this which I will submit soon. The idea is to do nothing in expand_compound_operation() when the pattern is (sign_extend (mem ...) ).=