diff options
Diffstat (limited to 'src/compiler/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 5b2e7ee2405..3326bbef684 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -439,6 +439,12 @@ optimizations = [ (('uge', '#a', ('umax', '#b', c)), ('iand', ('uge', a, b), ('uge', a, c))), (('uge', ('umin', '#a', b), '#c'), ('iand', ('uge', a, c), ('uge', b, c))), + # Thanks to sign extension, the ishr(a, b) is negative if and only if a is + # negative. + (('bcsel', ('ilt', a, 0), ('ineg', ('ishr', a, b)), ('ishr', a, b)), + ('iabs', ('ishr', a, b))), + (('iabs', ('ishr', ('iabs', a), b)), ('ishr', ('iabs', a), b)), + (('fabs', ('slt', a, b)), ('slt', a, b)), (('fabs', ('sge', a, b)), ('sge', a, b)), (('fabs', ('seq', a, b)), ('seq', a, b)), |