Module: Mesa Branch: master Commit: 4bb1a34727f52ecd4a8f00725d740ae2047cb1dc URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4bb1a34727f52ecd4a8f00725d740ae2047cb1dc
Author: Jason Ekstrand <jason.ekstr...@intel.com> Date: Thu Dec 6 13:02:01 2018 -0600 nir/algebraic: Optimize x2b(xneg(a)) -> a Shader-db results on Kaby Lake: total instructions in shared programs: 15072525 -> 15072525 (0.00%) instructions in affected programs: 0 -> 0 helped: 0 HURT: 0 This helps prevent regressions in later commits. Reviewed-by: Eric Anholt <e...@anholt.net> Reviewed-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> Tested-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> --- src/compiler/nir/nir_opt_algebraic.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 28e8a96d4d..ea24094a92 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -85,6 +85,8 @@ optimizations = [ (('fabs', ('u2f', a)), ('u2f', a)), (('iabs', ('iabs', a)), ('iabs', a)), (('iabs', ('ineg', a)), ('iabs', a)), + (('f2b', ('fneg', a)), ('f2b', a)), + (('i2b', ('ineg', a)), ('i2b', a)), (('~fadd', a, 0.0), a), (('iadd', a, 0), a), (('usadd_4x8', a, 0), a), _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-commit