Call for help: clang/llvm for sparc64

[Roman Divacky]

fwiw, we have a small testcase and I filed a bug in upstream llvm

http://llvm.org/bugs/show_bug.cgi?id=18521

A big thank you, to jmg@ for providing the testcase and analyzing the bug.

Roman

On Fri, Jan 17, 2014 at 06:49:24PM +0000, Craig Butler wrote:
> On Fri, 2014-01-17 at 19:37 +0100, Roman Divacky wrote:
> > We got further. It looks like the problem is TLS related. It's crashing
> > in __getCurrentRuneLocale().
> > 
> > And to correct myself - you need to do --enable-target=sparc (not sparc64)
> > and you need to compile with gcc48.
> > 
> > Anyway, start using llvm on sparc64, it's getting usable :) So more usage
> > is better.
> > 
> > On Fri, Jan 17, 2014 at 01:12:42PM +0000, Craig Butler wrote:
> > > Hi Roman and list.
> > > 
> > > I've got some spare time and sparc64 kit in the rack.  I can help out and walk through anything you need.
> > > 
> > > Kind Regards
> > > 
> > > Craig Butler
> > > 
> > > Roman Divacky <rdivacky at freebsd.org> wrote:
> > > 
> > > >Hi!
> > > >
> > > >LLVM is getting a sparc64 backend. It can even selfhost on linux. But it cant
> > > >on FreeBSD. I am wondering what causes that difference.
> > > >
> > > >A small test case where the difference can be seen is compiling tcsh from
> > > >base. The gethost utility used during the build just coredumps. I suspect
> > > >fixing that might get us on par with linux.
> > > >
> > > >So I am looking for someone who is willing to compile llvm/clang and
> > > >analyze whats wrong with gethost in tcsh compilation.
> > > >
> > > >This is how to do it (you need trunk llvm/clang):
> > > >
> > > >svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm
> > > >cd llvm/
> > > >svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
> > > >cd ../
> > > >CFLAGS=-fno-strict-aliasing CXXFLAGS=-fno-strict-aliasing ./configure --enable-optimized --enable-targets=sparc64
> > > >make
> > > >make install
> > > >
> > > >will give you a clang binary that you can use for tcsh compilation:
> > > >
> > > >cd /usr/src/bin/csh
> > > >CC=clang make
> > > >
> > > >I am more than willing to help with llvm/clang side of this but I dont know
> > > >anything about sparc64 so I need help. But please contact me if you want to
> > > >help!
> > > >
> > > >Thanks, Roman
> 
> Thanks Roman..  I'll compile gcc48 on my tinderbox and try again.
> 
> Report back soon
> 
> Regards
> 
> Craig Butler