diff options
| author | Kenneth Graunke <[email protected]> | 2015-06-11 01:59:44 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2015-06-25 02:12:32 -0700 |
| commit | 6026f7e8fb993a34f3e2ad1638d7a842a5cefd80 (patch) | |
| tree | d16f068272cfd7741776714f2d133d6b0bfe767e /src/glsl/nir/nir_opt_algebraic.py | |
| parent | 77a78c65f80323059d892c501ca551ccf324b17d (diff) | |
nir: Recognize max(min(a, 1.0), 0.0) as fsat(a).
We already recognize min(max(a, 0.0), 1.0) as a saturate, but neglected
this variant (which is also handled by the GLSL IR pass).
shader-db results on Broadwell:
total instructions in shared programs: 7363046 -> 7362788 (-0.00%)
instructions in affected programs: 11928 -> 11670 (-2.16%)
helped: 64
HURT: 0
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>
Diffstat (limited to 'src/glsl/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/glsl/nir/nir_opt_algebraic.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index eace791f5b0..3068445cbfe 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -101,6 +101,7 @@ optimizations = [ (('umin', a, a), a), (('umax', a, a), a), (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'), + (('fmax', ('fmin', a, 1.0), 0.0), ('fsat', a), '!options->lower_fsat'), (('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'), (('fsat', ('fsat', a)), ('fsat', a)), (('fmin', ('fmax', ('fmin', ('fmax', a, 0.0), 1.0), 0.0), 1.0), ('fmin', ('fmax', a, 0.0), 1.0)), |