diff options
| author | Timothy Arceri <timothy.arceri@collabora.com> | 2017-01-04 16:21:34 +1100 |
|---|---|---|
| committer | Timothy Arceri <timothy.arceri@collabora.com> | 2017-01-09 12:32:16 +1100 |
| commit | 1130f82a88ff4e7960e5a8d72db41e1b98431446 (patch) | |
| tree | c8e74072204d3ec31543e0425327ad083bcd6208 | |
| parent | 3371de38f282c77461bbe5007a2fec2a975776df (diff) | |
nir: add another comparison simplification
On BDW:
total instructions in shared programs: 13061877 -> 13060965 (-0.01%)
instructions in affected programs: 133569 -> 132657 (-0.68%)
helped: 566
HURT: 0
total cycles in shared programs: 256611784 -> 256599536 (-0.00%)
cycles in affected programs: 861016 -> 848768 (-1.42%)
helped: 379
HURT: 73
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 434881f85b..85cdc7bdaf 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -150,6 +150,8 @@ optimizations = [ # inot(a) (('fge', 0.0, ('b2f', a)), ('inot', a)), + (('fge', ('fneg', ('b2f', a)), 0.0), ('inot', a)), + # 0.0 < fabs(a) # fabs(a) > 0.0 # fabs(a) != 0.0 because fabs(a) must be >= 0 |