From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id DE0583858037; Thu, 11 Nov 2021 19:36:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DE0583858037 From: "acsawdey at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/103197] ppc inline expansion of memcpy/memmove should not use lxsibzx/stxsibx for a single byte Date: Thu, 11 Nov 2021 19:36:35 +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: 10.3.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: acsawdey 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: Thu, 11 Nov 2021 19:36:36 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103197 --- Comment #2 from acsawdey at gcc dot gnu.org --- >>From the reload dump: 0 Non input pseudo reload: reject++ 1 Non-pseudo reload: reject+=3D2 1 Non input pseudo reload: reject++ alt=3D0,overall=3D16,losers=3D2,rld_nregs=3D2 0 Non input pseudo reload: reject++ alt=3D1,overall=3D7,losers=3D1,rld_nregs=3D1 alt=3D2,overall=3D6,losers=3D1,rld_nregs=3D0 [...] Choosing alt 2 in insn 9: (0) wa (1) Z {*movqi_internal} The addressing for insn 9 is just reg+const so why did it think it would ha= ve to reload one register for alt 1 (d-form) and 0 for alt 2 which is x-form?=