From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 0E59D3858D32; Mon, 29 May 2023 14:46:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0E59D3858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685371586; bh=LE3tCa68EYAHlim4TkE4IUfc+LIxtAmsQj6gys46un0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=hAKZ9CE8tBCTmiJYwV6hP7dyJeivugl78XjHEVEMJWQlZt5u4WCsFXQ+9NUUbceSz kEOnQDT/sqikeBhxO6WstoAsEyKpQcF2k2GL00ttFporQkdY6vpwO/dBzXOe+zpCGj rbwRyflveBdf+BRV5PYQRT+1Tjj+bWA47Mfrv6rk= From: "d_vampile at 163 dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/110024] [Bug] 5% performance drop on important benchmark after r260951. Date: Mon, 29 May 2023 14:46:25 +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: 10.3.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: d_vampile at 163 dot com 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110024 --- Comment #1 from d_vampile --- It can be seen that the vector register (D0) is used before the modificatio= n, and the common register (X0) is used after the modification.=