https://bugs.freedesktop.org/show_bug.cgi?id=63632
--- Comment #3 from Andy Furniss adf.lists@gmail.com --- (In reply to comment #2)
I can't reproduce this with LLVM r179895 and Mesa 12eab7cc564a6928197f9b87ded9e368e56976f0
Have you done full rebuilds of both projects?
Yes, I always do make [dist]clean and git clean -dfx.
I have just deleted both trees and re-cloned to be sure, but the segfault is still there.
When I was on my working commits moving either llvm or mesa to head while keeping the other on "working" produced the segfault (which is why I didn't do a proper bisect).
I always clean and rebuild mesa after llvm has changed.