From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id BCA053858D1E; Sun, 14 Jan 2024 12:10:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BCA053858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1705234222; bh=6MQ8JDjB+IY/cNZa98J4Q6A0k2m/MOf1spxgRWXXF1k=; h=From:To:Subject:Date:In-Reply-To:References:From; b=WiJYlwcBFa/VD/YQXCmKs9uTVarlpcVgT5PiZkkv3K/t8sKRnp1b78HS/ScfnHS+x zryiQrhOHgLQZWqg4hQyvCBlogiiiRzhb8my3KMbOHnu6cHGft56BsxplEqhiNijpa s3QZbGOPPxxIPfKQscGjIY5TbSEsPsPHi0jIwL0w= From: "roger at nextmovesoftware dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/111267] [14 Regression] Codegen regression from i386 argument passing changes Date: Sun, 14 Jan 2024 12:10:20 +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: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: roger at nextmovesoftware dot com X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: roger at nextmovesoftware dot com X-Bugzilla-Target-Milestone: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status assigned_to 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=3D111267 Roger Sayle changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |roger at nextmoveso= ftware dot com --- Comment #8 from Roger Sayle --- Now we're in stage4, I'll take this. I'm bootstrapping and regression test= ing a variant of my tweak to try_fwprop_subst_pattern. The change in comment #7 can hang loop indefinitely if the transformation results in the same cost as the original, so the logic on when to forward-propagate needed to be tweake= d a little.=