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authorIan Romanick <ian.d.romanick@intel.com>2021-11-09 15:51:41 -0800
committerMarge Bot <emma+marge@anholt.net>2021-12-06 19:50:42 +0000
commitb88202b0e427440893b772267c956bcc4e76c819 (patch)
tree1e8f6749abe54ba7d0f317a0c7107ac3033a784a /src/gallium/winsys/i915/drm/Makefile
parentfadb4b92c5156f2ed980778c7be42a78296f75d4 (diff)
nir/constant_folding: Optimize txb with bias of constant zero to texHEADmain
v2: Fail gracefully when bias_idx < 0. See comment in the code for the rationale. See also issue #5722. All Haswell and newer Intel GPUs had similar results. (Ice Lake shown) total instructions in shared programs: 19757733 -> 19753431 (-0.02%) instructions in affected programs: 277248 -> 272946 (-1.55%) helped: 1644 HURT: 1 helped stats (abs) min: 1 max: 16 x̄: 2.62 x̃: 2 helped stats (rel) min: 0.05% max: 11.11% x̄: 2.11% x̃: 1.61% HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1 HURT stats (rel) min: 0.35% max: 0.35% x̄: 0.35% x̃: 0.35% 95% mean confidence interval for instructions value: -2.72 -2.51 95% mean confidence interval for instructions %-change: -2.19% -2.03% Instructions are helped. total cycles in shared programs: 938517439 -> 938384079 (-0.01%) cycles in affected programs: 19548849 -> 19415489 (-0.68%) helped: 1358 HURT: 269 helped stats (abs) min: 1 max: 2328 x̄: 133.01 x̃: 16 helped stats (rel) min: <.01% max: 41.12% x̄: 1.40% x̃: 0.48% HURT stats (abs) min: 1 max: 1302 x̄: 175.70 x̃: 30 HURT stats (rel) min: <.01% max: 69.03% x̄: 6.24% x̃: 1.04% 95% mean confidence interval for cycles value: -99.14 -64.79 95% mean confidence interval for cycles %-change: -0.47% 0.19% Inconclusive result (%-change mean confidence interval includes 0). LOST: 21 GAINED: 32 All Ivy Bridge and older Intel GPUs had similar results. (Ivy Bridge shown) total instructions in shared programs: 15302017 -> 15301485 (<.01%) instructions in affected programs: 22565 -> 22033 (-2.36%) helped: 168 HURT: 0 helped stats (abs) min: 1 max: 7 x̄: 3.17 x̃: 3 helped stats (rel) min: 0.04% max: 4.39% x̄: 3.05% x̃: 3.27% 95% mean confidence interval for instructions value: -3.45 -2.89 95% mean confidence interval for instructions %-change: -3.19% -2.91% Instructions are helped. total cycles in shared programs: 550119761 -> 549989147 (-0.02%) cycles in affected programs: 12834251 -> 12703637 (-1.02%) helped: 164 HURT: 0 helped stats (abs) min: 20 max: 4547 x̄: 796.43 x̃: 294 helped stats (rel) min: 0.23% max: 53.84% x̄: 2.05% x̃: 0.37% 95% mean confidence interval for cycles value: -942.62 -650.24 95% mean confidence interval for cycles %-change: -3.17% -0.94% Cycles are helped. fossil-db results: Tiger Lake, Ice Lake, and Skylake had similar results. (Ice Lake shown) Instructions in all programs: 142073649 -> 141307526 (-0.5%) SENDs in all programs: 6876848 -> 6876778 (-0.0%) Loops in all programs: 38283 -> 38283 (+0.0%) Cycles in all programs: 8410049681 -> 8402902960 (-0.1%) Spills in all programs: 190623 -> 190599 (-0.0%) Fills in all programs: 297780 -> 297756 (-0.0%) Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> [v1] Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14025>
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