Date: Mon, 25 Sep 2017 17:48:21 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: Re: svn commit: r450636 - in head/emulators/virtualbox-ose: . files Message-ID: <a2d00136-f30f-f268-3c32-43476a97516e@FreeBSD.org> In-Reply-To: <201709252139.v8PLdTCI068203@repo.freebsd.org> References: <201709252139.v8PLdTCI068203@repo.freebsd.org>
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On 09/25/2017 17:39, Jung-uk Kim wrote: > Author: jkim > Date: Mon Sep 25 21:39:29 2017 > New Revision: 450636 > URL: https://svnweb.freebsd.org/changeset/ports/450636 > > Log: > Build recompiler with Clang if global register variable is supported. > > Note support for global register variable was proposed in the following > upstream code reviews: > > https://reviews.llvm.org/D3261 > https://reviews.llvm.org/D3797 > > and commits: > > http://llvm.org/viewvc/llvm-project?view=revision&revision=208104 > http://llvm.org/viewvc/llvm-project?view=revision&revision=209149 > > However, it has very limited support as described in the following upstream > PR in the gory details: > > https://bugs.llvm.org/show_bug.cgi?id=31005 > > Although it is incomplete, I *believe* Clang 3.5 and later has just enough > code to support (ancient) QEMU-based recompiler. If you experience any VM > crash related to recompiler, e.g., "fatal error in recompiler cpu" in its > VBox.log, please let me know. > > FYI, QEMU was rewritten not to use this GCC-specific feature long time ago: > > http://lists.gnu.org/archive/html/qemu-devel/2011-05/msg00855.html > https://www.mail-archive.com/qemu-devel@nongnu.org/msg63834.html ... I meant to add the following URL, not the mail-archive.com one. http://lists.gnu.org/archive/html/qemu-devel/2011-05/msg01116.html Jung-uk Kim
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