From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A35A83851C20; Fri, 19 Jun 2020 16:40:19 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A35A83851C20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1592584819; bh=8M3b4jMsfNXxkmReG7dqpw1I5jINd/8Zyj0IV49Xpnc=; h=From:To:Subject:Date:In-Reply-To:References:From; b=v1h1R7JoQ6Owq0YU0xxaR30AcTJg3gYzMQm0cE/ZSRkxB3X3lRflvwgbrPv1/xcuU nb/MdeOhsYM/GM0PnXGCFW68BEv+/r4v7Dj0VJSQ/hoB89LbKsT1UBlwVBN/QAte0T CP+pM7s2jK4F/4K5XP/HQUfBM5UZpKUPRroHoL4c= From: "wschmidt at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/95737] PPC: Unnecessary extsw after negative less than Date: Fri, 19 Jun 2020 16:40:18 +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: 8.3.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: wschmidt 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: Fri, 19 Jun 2020 16:40:19 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95737 --- Comment #1 from Bill Schmidt --- Please test this out of context of a return statement. The problem with unnecessary extends of return values is widely known and not specific to th= is particular case.=