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Diffstat (limited to 'src/compiler')
| -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 e8696abaf52..f275d70d276 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -394,6 +394,12 @@ optimizations = [ (('ior', ('uge', 1, a), ('ieq', a, 2)), ('uge', 2, a)), (('ior', ('uge', 2, a), ('ieq', a, 3)), ('uge', 3, a)), + # The (i2f32, ...) part is an open-coded fsign. When that is combined with + # the bcsel, it's basically copysign(1.0, a). There is no copysign in NIR, + # so emit an open-coded version of that. + (('bcsel@32', ('feq', a, 0.0), 1.0, ('i2f32', ('iadd', ('b2i32', ('flt', 0.0, 'a@32')), ('ineg', ('b2i32', ('flt', 'a@32', 0.0)))))), + ('ior', 0x3f800000, ('iand', a, 0x80000000))), + (('ior', a, ('ieq', a, False)), True), (('ior', a, ('inot', a)), -1), |