https://bugs.freedesktop.org/show_bug.cgi?id=104362
--- Comment #17 from Marek Olšák maraeo@gmail.com --- (In reply to nmr from comment #15)
Marek forgive my ignorance but why would SGPR spilling or branching cause the hang? Is the shader just timing out somehow and the timeout resulting in a kernel module abort?
Pretty much. The shader is stuck and doesn't continue. Also the shader is insanely huge with lots of SGPR spilling and branching.