nir/gcm: pin some instructions which require uniform sources
fossil-db (Sienna Cichlid, GCM enabled):
Totals from 6192 (4.12% of 150170) affected shaders:
VGPRs: 548392 -> 542040 (-1.16%)
SpillSGPRs: 3702 -> 3990 (+7.78%); split: -0.54%, +8.32%
CodeSize: 62418488 -> 62481516 (+0.10%); split: -0.07%, +0.17%
MaxWaves: 70582 -> 71718 (+1.61%)
Instrs: 11768497 -> 11795079 (+0.23%); split: -0.07%, +0.30%
Latency: 445891848 -> 523561297 (+17.42%); split: -0.07%, +17.49%
InvThroughput: 115675481 -> 121494913 (+5.03%); split: -0.09%, +5.12%
VClause: 164914 -> 164934 (+0.01%); split: -0.05%, +0.06%
SClause: 405991 -> 395302 (-2.63%); split: -2.64%, +0.00%
Copies: 907216 -> 926429 (+2.12%); split: -1.11%, +3.23%
Branches: 456373 -> 457478 (+0.24%); split: -0.13%, +0.38%
PreSGPRs: 648030 -> 642953 (-0.78%); split: -0.88%, +0.10%
PreVGPRs: 522425 -> 516355 (-1.16%); split: -1.16%, +0.00%
Seems to affect Detroit: Become Human and Cyberpunk 2077. The Cyberpunk
2077 changes look like a fixed bug. At least some of the Detroit: Become
Human changes could probably be removed with better divergence analysis.
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12444>
Rhys Perry
3d228b6926