[Mesa-dev] [PATCH] nir: add unsigned less then comparison simplification

[Timothy Arceri]

This avoids loop unrolling regressions in Wolfenstein II on DXVK
with an upcoming optimisation series from Samuel.
---
 src/compiler/nir/nir_opt_algebraic.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 909ea3daf42..14ffd9e7b82 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -149,6 +149,7 @@ optimizations = [
    (('~inot', ('feq', a, b)), ('fne', a, b)),
    (('~inot', ('fne', a, b)), ('feq', a, b)),
    (('inot', ('ilt', a, b)), ('ige', a, b)),
+   (('inot', ('ult', a, b)), ('uge', a, b)),
    (('inot', ('ige', a, b)), ('ilt', a, b)),
    (('inot', ('ieq', a, b)), ('ine', a, b)),
    (('inot', ('ine', a, b)), ('ieq', a, b)),
-- 
2.17.0