(In reply to comment #12)
> Created attachment 94775 [details]
> gdb backtrace

Unfortunately, this backtrace is useless because it doesn't show any symbol
names.

It might be easier to do this with glretrace than with Wine.

(In reply to comment #11)
> --with-optimize-option= --disable-optimized --enable-expensive-checks

Does building LLVM without these options help, or maybe with --enable-optimized
instead of them?