https://bugs.freedesktop.org/show_bug.cgi?id=96488

--- Comment #8 from Jan Vesely <jv356@scarletmail.rutgers.edu> ---
(In reply to nixscripter from comment #7)
> Normally, I would be asking in this comment if there is any progress on
> this, but I can tell there has been... change, at least.
> 
> Now instead of crashing, it deadlocks the calling process waiting on a
> mutex. Forever, as far as I can tell.
> 
> LLVM version: r289770
> Mesa version: commit 47351b843a
> 
> Perhaps this is more easily fixed? Or is this getting to the heart of the
> matter implied in comment 2?

the hang is probably a separate bug. ImageMagick test suite results on my Turks
GPU are:
# TOTAL: 86
# PASS:  78
# SKIP:  0
# XFAIL: 0
# FAIL:  3
# XPASS: 0
# ERROR: 5

the errors and failures are accompanied by:
Assertion `i < getNumRegs() && "Register number out of range!"' failed.

The patches to add support for noret atomics (should be good enough for
histogram) are at:
https://reviews.llvm.org/D27989
https://reviews.llvm.org/D28067

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