From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from resqmta-c1p-023462.sys.comcast.net (resqmta-c1p-023462.sys.comcast.net [IPv6:2001:558:fd00:56::2]) by sourceware.org (Postfix) with ESMTPS id 5AA4A386D620 for ; Thu, 15 Feb 2024 22:21:07 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 5AA4A386D620 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=comcast.net Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=comcast.net ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 5AA4A386D620 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2001:558:fd00:56::2 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708035668; cv=none; b=rAyu/H8PMv/87FD74Xny2sU3Yw+8yeD7KeugprnhcxqeoOx63u3CItjqlzjLEw5eIY9lXp4RMy9hk38Uu4/MiUdLyapJTsnQlMituoGHJTwNmSa1gRNtTzV1RM/fkJrt67X2oMTjW9EACkOhFM5FWYVWbO0bRMbD1XzKqjI2myY= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708035668; c=relaxed/simple; bh=ih32/l3bqZ7b1qetYc1qELtTjpqvP8QtidEA25cI5Z8=; h=DKIM-Signature:Mime-Version:Subject:From:Date:Message-Id:To; b=TTSXtQ7Md3CarUBWRvftsL44dSQ/haKlHJ3/+OwxsbZw+DvN9MVt6A6J8QlGxAgqXmaLjQAqviGZvftTiH6z93Sby8xVtZQJCtyUHNlp+SFKVuQ3xqEdLwLhFafdlCQ6W7WW9QAqNv2U1xPD23Q2I+K+VPRA4kP2kRZU/FH3lB0= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from resomta-c1p-022592.sys.comcast.net ([96.102.18.237]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 256/256 bits) (Client did not present a certificate) by resqmta-c1p-023462.sys.comcast.net with ESMTP id aiDero0uMSlFzak6MrlHqn; Thu, 15 Feb 2024 22:21:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=20190202a; t=1708035666; bh=qUphE7RYCdhC2cErmIbdQDd2Nk5QWar2HFrxt478kSo=; h=Received:Received:Content-Type:Mime-Version:Subject:From:Date: Message-Id:To:Xfinity-Spam-Result; b=4ic6hKDq/eWnETdzKxHMBRoDyjnjLZQT3DoybqWTGJS/ncjZ7uSvzrmi9eV4/3qnU Dl96M/oqra3ET/wjwk64ZetnTfsNVhmGqCmT6fa/xnyjpX3yfvwaENwwdylkpzCJSS 2amGbzS+tNgRf+kxylJ/xpk/eV2NQNl9pCqxfik2k5uRswOUj9U4K2PgIUlOXDPnJJ tZaDvnNppaXQVMHav38hXq3kKzu4XIZQYNV1rAnQIbU8f19zayu2gTDVyioJ0VcCQB z0KmaokbDdQlebHY6fd0IKn4Kh5IFO69ek3Y/S5IyOpjOP+M2hqHer8q/wWLn9LbWF H2f/cXJr0fTeg== Received: from smtpclient.apple ([73.60.223.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 256/256 bits) (Client did not present a certificate) by resomta-c1p-022592.sys.comcast.net with ESMTPSA id ak6JrQcfbUmrEak6Krru0Y; Thu, 15 Feb 2024 22:21:06 +0000 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.8\)) Subject: Re: [PATCH] Turn on LRA on all targets From: Paul Koning In-Reply-To: Date: Thu, 15 Feb 2024 17:21:03 -0500 Cc: Segher Boessenkool , gcc-patches@gcc.gnu.org Content-Transfer-Encoding: quoted-printable Message-Id: <2A759520-2D62-472E-A97F-35E09B6E50F5@comcast.net> References: <283c45ca085ced958cbce6e64331252c83a5899f.1682268126.git.segher@kernel.crashing.org> <20230423203328.GL19790@gate.crashing.org> To: "Maciej W. Rozycki" X-Mailer: Apple Mail (2.3696.120.41.1.8) X-CMAE-Envelope: MS4xfB9E8x8C9+YkvTJBRpK4JuJgzRIVvPAZUMOAEYtyWhgk39Ne6UmGcdM/JUGtg1Y/21UvgEJ29N70yfB9DaO3mKFzRnUAAp3+4JAR33Fkc5gQigDt2OH5 bdyHv6qCHyo3ow8dLzceJOUcrlb7ntpkbBSz7IKOfYUR2CzO+dL0Lew9IkndHCshPJCmS0hrnJ1kvv3t+w6mN9mlPF/n58Zsub/C5j1UKmo67xIC6rMUBQaH SqQKg4yrfVE6c8Pev27WA57Q3qnelYB8EAg+iV+Vh5I= X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,SPF_HELO_PASS,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: > On May 15, 2023, at 5:09 PM, Maciej W. Rozycki = wrote: >=20 > ... >=20 > I may choose to implement a non-DWARF unwinder instead, as the VAX = stack=20 > frame is always fully described by the hardware and there is never = ever a=20 > need for debug information to be able to decode any VAX stack frame = (the=20 > RET machine instruction uses the stack frame information to restore = the=20 > previous PC, FP, SP, AP and any static registers saved by CALLS). That would make sense; it's like the heuristic unwinder found in some = other targets (I remember the MIPS one, which worked fairly well and = allowed debugging without useable debug data). paul