hk: optimize varyings

Stats are all over the place for some apps.

 PERCENTAGE DELTAS                   Shaders  MaxWaves   Instrs   CodeSize   Spills    Fills    Scratch     ALU      FSCIB       IC       GPRs    Uniforms Preamble instrs
  detroit_become_human                995       +0.12%    -1.21%    -1.27%   +77.42%   +71.67%   +78.82%    -1.11%    -1.11%    -1.03%    -3.22%    -1.40%       -2.07%
  god_of_war                          1029      -0.04%    -5.05%    -4.73%      .         .         .       -4.32%    -4.32%    -2.48%    -1.64%    -4.61%       -5.13%
  total_warhammer_3                   642       +7.28%   -14.66%   -13.45%   -49.23%   -49.04%   -34.78%   -14.25%   -14.25%   -10.50%    -8.72%    -7.98%       -8.57%

But probably a win overall. Improves Control fps by a few %.

Totals:
MaxWaves: 53068992 -> 53195520 (+0.24%); split: +0.39%, -0.16%
Instrs: 23793021 -> 22776261 (-4.27%); split: -4.41%, +0.14%
CodeSize: 169869654 -> 163433116 (-3.79%); split: -3.96%, +0.17%
Spills: 66100 -> 66124 (+0.04%); split: -0.67%, +0.71%
Fills: 43755 -> 43471 (-0.65%); split: -2.05%, +1.40%
Scratch: 403698 -> 403754 (+0.01%); split: -0.31%, +0.32%
ALU: 18510167 -> 17814743 (-3.76%); split: -3.95%, +0.19%
FSCIB: 18454849 -> 17759392 (-3.77%); split: -3.96%, +0.19%
IC: 5279176 -> 5184542 (-1.79%); split: -1.82%, +0.03%
GPRs: 3833103 -> 3751058 (-2.14%); split: -4.12%, +1.97%
Uniforms: 10528625 -> 10271771 (-2.44%); split: -2.52%, +0.08%
Preamble instrs: 10289152 -> 10008570 (-2.73%); split: -2.95%, +0.23%

Totals from 42844 (79.31% of 54019) affected shaders:
MaxWaves: 42014720 -> 42141248 (+0.30%); split: +0.50%, -0.20%
Instrs: 18406093 -> 17389333 (-5.52%); split: -5.70%, +0.18%
CodeSize: 131343714 -> 124907176 (-4.90%); split: -5.13%, +0.23%
Spills: 21479 -> 21503 (+0.11%); split: -2.06%, +2.17%
Fills: 5488 -> 5204 (-5.17%); split: -16.31%, +11.13%
Scratch: 332144 -> 332200 (+0.02%); split: -0.37%, +0.39%
ALU: 14476764 -> 13781340 (-4.80%); split: -5.05%, +0.25%
FSCIB: 14476671 -> 13781214 (-4.80%); split: -5.05%, +0.25%
IC: 3930760 -> 3836126 (-2.41%); split: -2.45%, +0.04%
GPRs: 3158947 -> 3076902 (-2.60%); split: -4.99%, +2.40%
Uniforms: 8660650 -> 8403796 (-2.97%); split: -3.06%, +0.09%
Preamble instrs: 8304828 -> 8024246 (-3.38%); split: -3.66%, +0.28%

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36265>
1 file changed