From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 659073858D1E; Tue, 20 Jun 2023 15:56:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 659073858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687276572; bh=WyNxwCViwDrZg+lxUZ+ydpesQPOJ/md4K5hZ0Xn+f3o=; h=From:To:Subject:Date:In-Reply-To:References:From; b=tOJvEZjnHKnTeUg3w6f+qCWdCOt6IcNx38K/DAg66dPovbMfhbD/5jPTlnOZd2ASx DwKMv9ybFh049DmNh1bWOGHTRHTQYH4NHaowWuu3BmXI4e9RibFE7MpakHsT7wvBux uYk0HLz1pLdg8QsyjhDq/haKx9StJMgzrv6gsiUM= From: "ams at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/110313] [14 Regression] GCN Fiji reload ICE in 'process_alt_operands' Date: Tue, 20 Jun 2023 15:56:12 +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: 14.0 X-Bugzilla-Keywords: openmp X-Bugzilla-Severity: normal X-Bugzilla-Who: ams at gcc dot gnu.org X-Bugzilla-Status: NEW 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=3D110313 --- Comment #5 from Andrew Stubbs --- One thing that is unusual about the GCN stack pointer is that it's actually= two registers. Could this be breaking some cprop assumptions? GCN can't fit an address in one (SImode) register so all (DImode) pointers require a pair of registers. We had to rework the dwarf stack representation code for this architecture, so I'm pretty sure no other port does this.=