[ILK] GPU hang (and multiple fails) in piglit shader tests if spilling is forced in the vec4 backend
Submitted by Iago Toral
Assigned to Intel 3D Bugs Mailing List
Running piglit's shader tests (~14000 tests) while forcing spilling on the vec4 backend (INTEL_DEBUG=spill_vec4) produces at least one GPU hang (for me this happens consistently around test 10400). Also, I see a lot of tests that stop passing, even before the GPU hang, which points at something seriously broken. The FS backend is not affected, even if INTEL_DEBUG=spill_fs is used to force spilling.
All this is with current master (1614c39a)
INTEL_DEBUG=spill_vec4 ./piglit-run.py tests/shader results/shader
I'll see if I can add more info, at least the specific test triggering the hang.