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authorIan Romanick <[email protected]>2018-02-21 18:06:56 -0800
committerIan Romanick <[email protected]>2018-03-08 15:26:26 -0800
commit52c7df1643ec9af119fd66f916f7fbdbcc798d2d (patch)
tree3784e5a34a93ed0b68b6ce790fedfba85c899c70 /include/CL
parent70de61594dcf99f24eb31ebf98d62f13e1f44c2e (diff)
i965/fs: Merge CMP and SEL into CSEL on Gen8+
v2: Fix several problems handling inverted predicates. Add a much bigger comment around the BRW_CONDITIONAL_NZ case. v3: Allow uniforms and shader inputs as sources for the original SEL and CMP instructions. This enables a LOT more shaders to receive CSEL merging (5816 vs 8564 on SKL). v4: Report progress. Broadwell and Skylake had similar results. (Broadwell shown) helped: 8527 HURT: 0 helped stats (abs) min: 1 max: 27 x̄: 2.44 x̃: 1 helped stats (rel) min: 0.03% max: 17.80% x̄: 1.12% x̃: 0.70% 95% mean confidence interval for instructions value: -2.51 -2.36 95% mean confidence interval for instructions %-change: -1.15% -1.10% Instructions are helped. total cycles in shared programs: 559442317 -> 558288357 (-0.21%) cycles in affected programs: 372699860 -> 371545900 (-0.31%) helped: 6748 HURT: 1450 helped stats (abs) min: 1 max: 32000 x̄: 182.41 x̃: 12 helped stats (rel) min: <.01% max: 66.08% x̄: 3.42% x̃: 0.70% HURT stats (abs) min: 1 max: 2538 x̄: 53.08 x̃: 14 HURT stats (rel) min: <.01% max: 96.72% x̄: 3.32% x̃: 0.90% 95% mean confidence interval for cycles value: -179.01 -102.51 95% mean confidence interval for cycles %-change: -2.37% -2.08% Cycles are helped. LOST: 0 GAINED: 6 No changes on earlier platforms. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]> [v1] Reviewed-by: Kenneth Graunke <[email protected]> [v3] Reviewed-by: Matt Turner <[email protected]>
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