No changes, but does prevent some regressions in the next commit.
---
 src/glsl/nir/nir_opt_algebraic.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/glsl/nir/nir_opt_algebraic.py 
b/src/glsl/nir/nir_opt_algebraic.py
index fda4bd5..42f4f47 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -90,6 +90,12 @@ optimizations = [
    (('bcsel', ('flt', a, b), b, a), ('fmax', a, b)),
    (('bcsel', ('inot', 'a@bool'), b, c), ('bcsel', a, c, b)),
    (('bcsel', a, ('bcsel', a, b, c), d), ('bcsel', a, b, d)),
+   (('fmin', a, a), a),
+   (('fmax', a, a), a),
+   (('imin', a, a), a),
+   (('imax', a, a), a),
+   (('umin', a, a), a),
+   (('umax', a, a), a),
    (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'),
    (('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'),
    (('fsat', ('fsat', a)), ('fsat', a)),
-- 
2.0.5

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