diff options
| author | Ian Romanick <[email protected]> | 2018-02-01 15:33:04 -0800 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2018-03-06 11:17:29 -0800 |
| commit | b974dfee114cc7a4857af324e86ab81318c78176 (patch) | |
| tree | ea3477d1baa78f3163c20b9b25db8d1e03463aef /src/compiler | |
| parent | f50400cc8040cf2d07de97e76d9b1ed144c5c8b4 (diff) | |
nir: Pull b2f out of bcsel
All platforms had similar results. (Skylake shown)
total instructions in shared programs: 14516592 -> 14516586 (<.01%)
instructions in affected programs: 500 -> 494 (-1.20%)
helped: 2
HURT: 0
total cycles in shared programs: 533167044 -> 533166998 (<.01%)
cycles in affected programs: 6988 -> 6942 (-0.66%)
helped: 2
HURT: 0
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 553f82065a1..d94536439c8 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -372,6 +372,7 @@ optimizations = [ (('bcsel@32', a, -0.0, -1.0), ('fneg', ('b2f', ('inot', a)))), (('bcsel', True, b, c), b), (('bcsel', False, b, c), c), + (('bcsel', a, ('b2f(is_used_once)', b), ('b2f', c)), ('b2f', ('bcsel', a, b, c))), # The result of this should be hit by constant propagation and, in the # next round of opt_algebraic, get picked up by one of the above two. (('bcsel', '#a', b, c), ('bcsel', ('ine', 'a', 0), b, c)), |