From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 7F7283858D35; Sun, 25 Jun 2023 20:01:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7F7283858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687723300; bh=hVGvy85osCUxIAB5dQUMU8EVA8XUOMaPiW9pNrFRGs0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=v49+psRy374ICKy8yjK6zlnE8inqy4XrN8XHmU1wPVPRo5lf3YDEtor3wmkxRUEJR luAtCDxIFwPaGuIz5ZFQxstDASz3dCxE6gqfQ02+jqNa6HG7a7L2hm4jqpp2KIOHJn oP9WYBoZjZ/GZH/YwrYmogXIG9XU5Z3VhHnlaghg= From: "hubicka at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/110148] [14 Regression] TSVC s242 regression between g:c0df96b3cda5738afbba3a65bb054183c5cd5530 and g:e4c986fde56a6248f8fbe6cf0704e1da34b055d8 Date: Sun, 25 Jun 2023 20:01:39 +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: 14.0 X-Bugzilla-Keywords: missed-optimization, needs-bisection X-Bugzilla-Severity: normal X-Bugzilla-Who: hubicka 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: 14.0 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=3D110148 --- Comment #4 from Jan Hubicka --- zen3 fma requires all inputs to be ready to start execution, separate multiply+add can start multiplication earlier. Not sure if that explains the difference.=