From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 62A1F385AC3C; Mon, 3 Oct 2022 16:20:32 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 62A1F385AC3C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1664814032; bh=xMiE6M/DyldTVA6iTLc0h2hgvda246GId9DFBBuNDpg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=OxR5og71Jx/DTt7s13lBO72EjOg2oavS0PlUCwZwaH7gRTtM8LsNmH/Q5ib1tGKWt MRAWIL0NYCG36z0/qLukPMS1hJACDyCCewgwmAi64pAalQXSAZs13C0mhliOx3w8yB 93vb4XjbpeEZpCYQt1vcRy9zEpRtH3AfArfSrXeo= From: "hpa at zytor dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/56314] Please allow per-function specification of register conventions Date: Mon, 03 Oct 2022 16:20:30 +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: 4.8.0 X-Bugzilla-Keywords: missed-optimization, ra X-Bugzilla-Severity: enhancement X-Bugzilla-Who: hpa at zytor dot com 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: --- 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=3D56314 --- Comment #6 from H. Peter Anvin --- Unfortunately that's not really possible given the way the way the level do= es runtime patching (which isn't going to change, sorry.) At the very least we would need a *lot* more compiler support to give LTO all the information th= at it needs; say a *very* minimum LTO would need to support ORC metadata.=