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-rw-r--r--src/compiler/nir/nir_opt_algebraic.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 09538ba25a8..b141f2414db 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -205,6 +205,15 @@ optimizations = [
(('~ior', ('fge', a, '#b'), ('fge', a, '#c')), ('fge', a, ('fmin', b, c))),
(('~ior', ('fge', '#a', c), ('fge', '#b', c)), ('fge', ('fmax', a, b), c)),
+ # These patterns can result when (a < b || a < c) => (a < min(b, c))
+ # transformations occur before constant propagation and loop-unrolling.
+ (('~flt', a, ('fmax', b, a)), ('flt', a, b)),
+ (('~flt', ('fmin', a, b), a), ('flt', b, a)),
+ (('~fge', a, ('fmin', b, a)), True),
+ (('~fge', ('fmax', a, b), a), True),
+ (('~flt', a, ('fmin', b, a)), False),
+ (('~flt', ('fmax', a, b), a), False),
+
(('fabs', ('slt', a, b)), ('slt', a, b)),
(('fabs', ('sge', a, b)), ('sge', a, b)),
(('fabs', ('seq', a, b)), ('seq', a, b)),