diff options
| author | Ian Romanick <[email protected]> | 2018-08-01 10:13:55 -0700 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2018-08-04 01:12:03 -0700 |
| commit | ea6c276436851d27394abd132b239e1c21f0e923 (patch) | |
| tree | 2c2faf69f0d3725b08cb7bb87585f637a70f7867 /src/compiler | |
| parent | 4bad50ded99229c5c4f2f7e6c213b226cfd00a2c (diff) | |
nir: Mark the 0.0 < abs(a) transformation as imprecise
Unlike the much older -abs(a) >= 0.0 transformation, this is not
precise. The behavior changes if the source is NaN.
No shader-db changes on any platform.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Thomas Helland <[email protected]>
Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 7fc4ff1d407..c4f46b56d95 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -197,7 +197,7 @@ optimizations = [ # fabs(a) > 0.0 # fabs(a) != 0.0 because fabs(a) must be >= 0 # a != 0.0 - (('flt', 0.0, ('fabs', a)), ('fne', a, 0.0)), + (('~flt', 0.0, ('fabs', a)), ('fne', a, 0.0)), (('fmax', ('b2f(is_used_once)', a), ('b2f', b)), ('b2f', ('ior', a, b))), (('fmax', ('fneg(is_used_once)', ('b2f(is_used_once)', a)), ('fneg', ('b2f', b))), ('fneg', ('b2f', ('ior', a, b)))), |