diff options
| author | Timothy Arceri <[email protected]> | 2017-01-12 21:51:56 +1100 |
|---|---|---|
| committer | Timothy Arceri <[email protected]> | 2017-01-14 23:26:22 +1100 |
| commit | 772cd3104852302aedf87895cef7828ccacedee2 (patch) | |
| tree | 91e4f5998d6d78e80dd86e908a6ab851e33bc5b3 /src/compiler/nir/nir_opt_algebraic.py | |
| parent | 0d5071db5e50629a63490639a3c86dfc65bf27ab (diff) | |
nir: optimise min/max fadd combos
shader-db results BDW:
total instructions in shared programs: 13060410 -> 13060313 (-0.00%)
instructions in affected programs: 24533 -> 24436 (-0.40%)
helped: 88
HURT: 0
total cycles in shared programs: 256585692 -> 256586698 (0.00%)
cycles in affected programs: 647290 -> 648296 (0.16%)
helped: 35
HURT: 30
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index a557f7bf37d..d7ad1f2fbf3 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -522,6 +522,10 @@ late_optimizations = [ (('b2f(is_used_more_than_once)', ('inot', a)), ('bcsel', a, 0.0, 1.0)), (('fneg(is_used_more_than_once)', ('b2f', ('inot', a))), ('bcsel', a, -0.0, -1.0)), + + # we do these late so that we don't get in the way of creating ffmas + (('fmin', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', '#c', b)), ('fadd', c, ('fmin', a, b))), + (('fmax', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', '#c', b)), ('fadd', c, ('fmax', a, b))), ] print nir_algebraic.AlgebraicPass("nir_opt_algebraic", optimizations).render() |