diff options
| author | Matt Turner <[email protected]> | 2016-02-22 15:16:49 -0800 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2016-03-30 13:12:34 -0700 |
| commit | 6702f1acde9e93e41783fd2f4a7999fed8d9cb75 (patch) | |
| tree | 7e12aee6b93345560ddcae23d518a07d5edfc423 /src/compiler/nir/nir_opt_algebraic.py | |
| parent | a74fc3fe8ada87e1fedeea86f2d93f736a1217bc (diff) | |
nir: Propagate negates up multiplication chains.
total instructions in shared programs: 7112159 -> 7088092 (-0.34%)
instructions in affected programs: 1374915 -> 1350848 (-1.75%)
helped: 7392
HURT: 621
GAINED: 2
LOST: 2
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 53633233f2b..c2e56e71734 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -269,6 +269,10 @@ optimizations = [ (('fabs', ('fsub', 0.0, a)), ('fabs', a)), (('iabs', ('isub', 0, a)), ('iabs', a)), + # Propagate negation up multiplication chains + (('fmul', ('fneg', a), b), ('fneg', ('fmul', a, b))), + (('imul', ('ineg', a), b), ('ineg', ('fmul', a, b))), + # Misc. lowering (('fmod', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod'), (('uadd_carry', a, b), ('b2i', ('ult', ('iadd', a, b), a)), 'options->lower_uadd_carry'), |