Date: Wed, 10 Jan 2018 19:48:50 +0000 From: bugzilla-noreply@freebsd.org To: java@FreeBSD.org Subject: [Bug 225054] java/openjdk* : fails to build with clang 6.0 (blocks 571 ports) Message-ID: <bug-225054-8522-beo2F97Zlv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-225054-8522@https.bugs.freebsd.org/bugzilla/> References: <bug-225054-8522@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225054 --- Comment #7 from Dimitry Andric <dim@FreeBSD.org> --- (In reply to Jan Beich from comment #5) > Dimitry, can you find Clang commit that changed integrated assembler in > order for us to better understand the rationale? Yes, this was caused by https://reviews.llvm.org/rL315899; the changes were= for "better" rep/lock prefix support, but I filed several severe regression bug= s, after noticing these during world and ports builds, see: * https://bugs.llvm.org/show_bug.cgi?id=3D35741 (comments after x86 prefixes cause errors ) * https://bugs.llvm.org/show_bug.cgi?id=3D35749 (.byte directives after x86 prefixes cause errors) * https://bugs.llvm.org/show_bug.cgi?id=3D35831 (labels after x86 prefixes = cause errors) The first bug was fixed fairly quickly, but there has been no movement on t= he other two, and I think it is likely that more edge cases exist. I asked in PR35749 whether the release manager will consider reverting the upstream change in the 6.0.0 branch, since this regressed so much. I will = ask again. > (In reply to Jung-uk Kim from comment #6) > (In reply to Jan Beich from comment #4) >=20 > That's bad. :-( >=20 > Then, I guess we have no choice but to do something like this: >=20 > +-#define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " > ++#define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; .byte 0xf0; 1: " Yes, that is the workaround I put in my local ports tree too. But I hate i= t :( --=20 You are receiving this mail because: You are the assignee for the bug.=
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