Comment # 9 on bug 103743 from Philip Rebohle

Thanks for looking into this. While these two patches certainly improve the
situation significantly, they don't fix the issue entirely.

The remaining artifacts are hardly noticable in the original apitrace, so I
created another one (2.9G, bz2-compressed):
https://mega.nz/#!FHxSgZjL!0MzRQhI6W6Lk0beTv9LrPxDWjNTQveDuXVq3Mz2s7-M

Note that my original workaround still works with the LLVM patches applied.

Tested with updated LLVM-git, revision accb337c76e.