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3 commits
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97e3c6a12a |
intel/brw: Use range analysis to optimize fsign
shader-db: Meteor Lake, DG2, and Tiger Lake had similar results. (Meteor Lake shown) total instructions in shared programs: 19674784 -> 19665960 (-0.04%) instructions in affected programs: 933425 -> 924601 (-0.95%) helped: 3656 / HURT: 0 total cycles in shared programs: 810343919 -> 810241030 (-0.01%) cycles in affected programs: 56752034 -> 56649145 (-0.18%) helped: 3032 / HURT: 434 LOST: 11 GAINED: 0 Ice Lake and Skylake had similar results. (Ice Lake shown) total instructions in shared programs: 20315795 -> 20305856 (-0.05%) instructions in affected programs: 979698 -> 969759 (-1.01%) helped: 3845 / HURT: 0 total cycles in shared programs: 830600281 -> 830534694 (<.01%) cycles in affected programs: 45675615 -> 45610028 (-0.14%) helped: 3250 / HURT: 325 total spills in shared programs: 4583 -> 4565 (-0.39%) spills in affected programs: 180 -> 162 (-10.00%) helped: 3 / HURT: 0 total fills in shared programs: 5245 -> 5219 (-0.50%) fills in affected programs: 379 -> 353 (-6.86%) helped: 3 / HURT: 0 LOST: 14 GAINED: 8 fossil-db: All Intel platforms except Tiger Lake had similar results. (Meteor Lake shown) Totals: Instrs: 154024263 -> 154023814 (-0.00%) Cycle count: 17463341602 -> 17461726239 (-0.01%); split: -0.01%, +0.00% Totals from 322 (0.05% of 631440) affected shaders: Instrs: 199933 -> 199484 (-0.22%) Cycle count: 168492537 -> 166877174 (-0.96%); split: -0.96%, +0.00% Tiger Lake Instrs: 149984723 -> 149984287 (-0.00%) Cycle count: 15238596937 -> 15239260415 (+0.00%); split: -0.00%, +0.01% Max dispatch width: 5553408 -> 5553424 (+0.00%) Totals from 318 (0.05% of 631414) affected shaders: Instrs: 179624 -> 179188 (-0.24%) Cycle count: 160724533 -> 161388011 (+0.41%); split: -0.06%, +0.48% Max dispatch width: 3296 -> 3312 (+0.49%) Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29095> |
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e578657313 |
intel/brw: Implement more strictly correct fsign lowering
The huge amount of helped shaders is due to the "~" versions of the patterns. shader-db: Meteor Lake and DG2 had similar results. (Meteor Lake shown) total instructions in shared programs: 19672345 -> 19662605 (-0.05%) instructions in affected programs: 1147766 -> 1138026 (-0.85%) helped: 2691 / HURT: 1650 total cycles in shared programs: 810323688 -> 810145191 (-0.02%) cycles in affected programs: 68918312 -> 68739815 (-0.26%) helped: 3651 / HURT: 1832 LOST: 29 GAINED: 38 Tiger Lake total instructions in shared programs: 19489619 -> 19479909 (-0.05%) instructions in affected programs: 1124564 -> 1114854 (-0.86%) helped: 2682 / HURT: 1643 total cycles in shared programs: 811468406 -> 811706747 (0.03%) cycles in affected programs: 66397690 -> 66636031 (0.36%) helped: 3692 / HURT: 1775 total spills in shared programs: 3906 -> 3907 (0.03%) spills in affected programs: 16 -> 17 (6.25%) helped: 0 / HURT: 1 total fills in shared programs: 3220 -> 3222 (0.06%) fills in affected programs: 50 -> 52 (4.00%) helped: 0 / HURT: 1 LOST: 33 GAINED: 36 Ice Lake and Skylake had similar results. (Ice Lake shown) total instructions in shared programs: 20317882 -> 20307495 (-0.05%) instructions in affected programs: 1199651 -> 1189264 (-0.87%) helped: 2863 / HURT: 1680 total cycles in shared programs: 830880024 -> 830457927 (-0.05%) cycles in affected programs: 63347102 -> 62925005 (-0.67%) helped: 4118 / HURT: 1622 total spills in shared programs: 4593 -> 4583 (-0.22%) spills in affected programs: 205 -> 195 (-4.88%) helped: 4 / HURT: 0 total fills in shared programs: 5284 -> 5245 (-0.74%) fills in affected programs: 464 -> 425 (-8.41%) helped: 4 / HURT: 0 LOST: 70 GAINED: 33 fossil-db: Meteor Lake and DG2 had similar results. (Meteor Lake shown) Totals: Instrs: 154025275 -> 154022035 (-0.00%); split: -0.00%, +0.00% Cycle count: 17472869499 -> 17463289530 (-0.05%); split: -0.06%, +0.00% Spill count: 141269 -> 141246 (-0.02%); split: -0.02%, +0.00% Fill count: 265342 -> 265159 (-0.07%); split: -0.11%, +0.04% Max live registers: 32597829 -> 32597986 (+0.00%); split: -0.00%, +0.00% Max dispatch width: 5536776 -> 5537048 (+0.00%) Totals from 1590 (0.25% of 631423) affected shaders: Instrs: 1146532 -> 1143292 (-0.28%); split: -0.44%, +0.16% Cycle count: 1230843330 -> 1221263361 (-0.78%); split: -0.83%, +0.05% Spill count: 15832 -> 15809 (-0.15%); split: -0.19%, +0.04% Fill count: 36071 -> 35888 (-0.51%); split: -0.79%, +0.29% Max live registers: 93529 -> 93686 (+0.17%); split: -0.00%, +0.17% Max dispatch width: 15168 -> 15440 (+1.79%) Tiger Lake, Ice Lake, and Skylake had similar results. (Tiger Lake shown) Totals: Instrs: 149564084 -> 149562467 (-0.00%); split: -0.00%, +0.00% Cycle count: 15151701515 -> 15158290114 (+0.04%); split: -0.00%, +0.04% Max live registers: 32249443 -> 32249620 (+0.00%); split: -0.00%, +0.00% Max dispatch width: 5540536 -> 5540488 (-0.00%) Totals from 1605 (0.25% of 630303) affected shaders: Instrs: 584950 -> 583333 (-0.28%); split: -0.49%, +0.21% Cycle count: 160926321 -> 167514920 (+4.09%); split: -0.05%, +4.14% Max live registers: 90851 -> 91028 (+0.19%); split: -0.00%, +0.20% Max dispatch width: 15440 -> 15392 (-0.31%) Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29095> |
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3f151c03af |
intel/brw: Handle fsign optimization in a NIR algebraic pass
This is a lot less code, and it makes it easier to experiment with other pattern-based optimizations in the future. The results here are nearly identical to the results I got from Ken's "intel/brw: Make fsign (for 16/32-bit) in SSA form"... which are not particularly good. In this commit and in Ken's, all of the shader-db shaders hurt for spills and fills are from Deus Ex Mankind Divided. Each shader has a bunch of texture instructions with a single fsign between the blocks. With the dependency on the flag removed, the scheduler puts all of the texture instructions at the start... and there are a LOT of them. shader-db: All Intel platforms had similar results. (Meteor Lake shown) total instructions in shared programs: 19647060 -> 19650207 (0.02%) instructions in affected programs: 734718 -> 737865 (0.43%) helped: 382 / HURT: 1984 total cycles in shared programs: 823238442 -> 822785913 (-0.05%) cycles in affected programs: 426901157 -> 426448628 (-0.11%) helped: 3408 / HURT: 3671 total spills in shared programs: 3887 -> 3891 (0.10%) spills in affected programs: 256 -> 260 (1.56%) helped: 0 / HURT: 4 total fills in shared programs: 3236 -> 3306 (2.16%) fills in affected programs: 882 -> 952 (7.94%) helped: 0 / HURT: 12 LOST: 37 GAINED: 34 fossil-db: DG2 and Meteor Lake had similar results. (Meteor Lake shown) Totals: Instrs: 154005469 -> 154008294 (+0.00%); split: -0.00%, +0.00% Cycle count: 17551859277 -> 17554293955 (+0.01%); split: -0.02%, +0.04% Spill count: 142078 -> 142090 (+0.01%) Fill count: 266761 -> 266729 (-0.01%); split: -0.02%, +0.01% Max live registers: 32593578 -> 32593858 (+0.00%) Max dispatch width: 5535944 -> 5536816 (+0.02%); split: +0.02%, -0.01% Totals from 5867 (0.93% of 631350) affected shaders: Instrs: 5475544 -> 5478369 (+0.05%); split: -0.04%, +0.09% Cycle count: 1649032029 -> 1651466707 (+0.15%); split: -0.24%, +0.39% Spill count: 26411 -> 26423 (+0.05%) Fill count: 57364 -> 57332 (-0.06%); split: -0.10%, +0.04% Max live registers: 431561 -> 431841 (+0.06%) Max dispatch width: 49784 -> 50656 (+1.75%); split: +2.38%, -0.63% Tiger Lake Totals: Instrs: 149530671 -> 149533588 (+0.00%); split: -0.00%, +0.00% Cycle count: 15261418953 -> 15264764921 (+0.02%); split: -0.00%, +0.03% Spill count: 60317 -> 60316 (-0.00%); split: -0.02%, +0.01% Max live registers: 32249201 -> 32249464 (+0.00%) Max dispatch width: 5540608 -> 5540584 (-0.00%) Totals from 5862 (0.93% of 630309) affected shaders: Instrs: 4740800 -> 4743717 (+0.06%); split: -0.04%, +0.10% Cycle count: 566531248 -> 569877216 (+0.59%); split: -0.13%, +0.72% Spill count: 11709 -> 11708 (-0.01%); split: -0.09%, +0.08% Max live registers: 424560 -> 424823 (+0.06%) Max dispatch width: 50304 -> 50280 (-0.05%) Ice Lake Totals: Instrs: 150499705 -> 150502608 (+0.00%); split: -0.00%, +0.00% Cycle count: 15105629116 -> 15105425880 (-0.00%); split: -0.00%, +0.00% Spill count: 60087 -> 60090 (+0.00%) Fill count: 100542 -> 100541 (-0.00%); split: -0.00%, +0.00% Max live registers: 32605215 -> 32605495 (+0.00%) Max dispatch width: 5617752 -> 5617792 (+0.00%); split: +0.00%, -0.00% Totals from 5882 (0.93% of 634934) affected shaders: Instrs: 4737206 -> 4740109 (+0.06%); split: -0.04%, +0.10% Cycle count: 598882104 -> 598678868 (-0.03%); split: -0.08%, +0.05% Spill count: 10278 -> 10281 (+0.03%) Fill count: 22504 -> 22503 (-0.00%); split: -0.01%, +0.01% Max live registers: 424184 -> 424464 (+0.07%) Max dispatch width: 50216 -> 50256 (+0.08%); split: +0.25%, -0.18% Skylake Totals: Instrs: 139092612 -> 139095257 (+0.00%); split: -0.00%, +0.00% Cycle count: 14533550285 -> 14533544716 (-0.00%); split: -0.00%, +0.00% Spill count: 58176 -> 58172 (-0.01%) Fill count: 95877 -> 95796 (-0.08%) Max live registers: 31924594 -> 31924874 (+0.00%) Max dispatch width: 5484568 -> 5484552 (-0.00%); split: +0.00%, -0.00% Totals from 5789 (0.93% of 625512) affected shaders: Instrs: 4481987 -> 4484632 (+0.06%); split: -0.04%, +0.10% Cycle count: 578310124 -> 578304555 (-0.00%); split: -0.05%, +0.05% Spill count: 9248 -> 9244 (-0.04%) Fill count: 19677 -> 19596 (-0.41%) Max live registers: 415340 -> 415620 (+0.07%) Max dispatch width: 49720 -> 49704 (-0.03%); split: +0.10%, -0.13% Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29095> |