One of these was seen in a Deus Ex shader.
---
src/compiler/nir/nir_opt_algebraic.py | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index 0986dde6851..682d498b79b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -286,6 +286,9 @@ optimizations = [
(('iand', ('uge(is_used_once)', a, b), ('uge', a, c)), ('uge', a, ('umax',
b, c))),
(('iand', ('uge(is_used_once)', a, c), ('uge', b, c)), ('uge', ('umin', a,
b), c)),
+ (('ior', ('flt', a, b), ('ieq', ('flt', a, b), 0)), True),
+ (('ior', ('fge', a, b), ('ieq', ('fge', a, b), 0)), True),
+
(('iand', ('ieq', 'a@32', 0), ('ieq', 'b@32', 0)), ('ieq', ('ior', 'a@32',
'b@32'), 0)),
# These patterns can result when (a < b || a < c) => (a < min(b, c))
--
2.17.1
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