[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 Gert Wollny changed: What|Removed |Added QA Contact|dri-devel@lists.freedesktop |mesa-dev@lists.freedesktop.

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #7 from Gert Wollny --- It seems sb is trying to create an operation that tries to use two distinct relative indices within the same instruction, this is forbidden and the scheduler gets stuck. from the post scheduler dump: # 0.

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #6 from Gert Wollny --- In debug mode an assertion fires as a reminder that this patch only works around the real, yet to be understood bug. For that reason I think it would be better to keep it open (At least the aforementioned bug

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #5 from Emil Velikov --- Gert, should we close this considering 69eee511c63 ("r600/sb: bail out if prepare_alu_group() doesn't find a proper scheduling") has landed? -- You are receiving this mail because: You are the assignee for

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #4 from Gert Wollny --- The bug can be triggered on BARTS (6850 HD) by using the Unreal Engine 4.17.1 or 4.18.0-pre3 with this patch applied [1] to fix a shader that otherwise would use too many registers. (Note that in mesa-debug m

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #3 from Gert Wollny --- Created attachment 134771 --> https://bugs.freedesktop.org/attachment.cgi?id=134771&action=edit Patch to fix shader in UE4 (added for completeness) -- You are receiving this mail because: You are the assig

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 --- Comment #2 from Gert Wollny --- In summary, the optimizer gets stuck in an infinite loop in schedule_alu, because prepare_alu_group() does not find a proper scheduling. -- You are receiving this mail because: You are the assignee for the

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 Gert Wollny changed: What|Removed |Added Attachment #134738|0 |1 is obsolete|

[Bug 103142] R600g+sb: optimizer apparently stuck in an endless loop

https://bugs.freedesktop.org/show_bug.cgi?id=103142 Bug ID: 103142 Summary: R600g+sb: optimizer apparently stuck in an endless loop Product: Mesa Version: git Hardware: x86-64 (AMD64) OS: Linux (All)