On Mon, Jul 08, 2019 at 11:49:52PM -0700, Nathan Chancellor wrote: > On Tue, Jul 09, 2019 at 07:04:43AM +0200, Christophe Leroy wrote: > > Is that a Clang bug ? > > No idea, it happens with clang-8 and clang-9 though (pretty sure there > were fixes for PowerPC in clang-8 so something before it probably won't > work but I haven't tried). > > > > > Do you have a disassembly of the code both with and without this patch in > > order to compare ? > > I can give you whatever disassembly you want (or I can upload the raw > files if that is easier). > > Cheers, > Nathan
Hi Christophe and Segher, What disassembly/files did you need to start taking a look at this? I can upload/send whatever you need. If it is easier, we have a self contained clang build script available to make it easier to reproduce this on your side (does assume an x86_64 host): https://github.com/ClangBuiltLinux/tc-build Cheers, Nathan