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authorMarek Olšák <[email protected]>2016-09-10 00:29:31 +0200
committerMarek Olšák <[email protected]>2016-09-12 21:06:57 +0200
commit546bc07349d0e53b71766780cf726fe21f7d6983 (patch)
treeef256b4ae1740e37f2bd9a0703eeeef8db358edb /src/mesa/swrast
parente2fb0441150e81f7ba30db1c8e8583858c3d8d5e (diff)
radeonsi: don't preload constants at the beginning of shaders
LLVM can CSE the loads, thus we can always re-load constants before each use. The decrease in SGPR spilling is huge. The best improvements are the dumbest ones. 26011 shaders in 14651 tests Totals: SGPRS: 1453346 -> 1251920 (-13.86 %) VGPRS: 742576 -> 728421 (-1.91 %) Spilled SGPRs: 52298 -> 16644 (-68.17 %) Spilled VGPRs: 397 -> 369 (-7.05 %) Scratch VGPRs: 1372 -> 1344 (-2.04 %) dwords per thread Code Size: 36136488 -> 36001064 (-0.37 %) bytes LDS: 767 -> 767 (0.00 %) blocks Max Waves: 219315 -> 222221 (1.33 %) Reviewed-by: Bas Nieuwenhuizen <[email protected]> Reviewed-by: Edward O'Callaghan <[email protected]> Reviewed-by: Nicolai Hähnle <[email protected]>
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