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authorTimothy Arceri <tarceri@itsqueeze.com>2018-05-30 20:32:24 +1000
committerTimothy Arceri <tarceri@itsqueeze.com>2018-05-30 22:48:37 +1000
commite8b368ad1c4bdafc32505b722617b8ab19296fbe (patch)
treeef8cdab96537004e1e9aaec1792e8e815dcfeace
parentc2799574eb104218ac4f6b8a3d64b8a0f8c89525 (diff)
nir: add unsigned comparison simplifications
This avoids loop unrolling regressions in Wolfenstein II on DXVK with an upcoming optimisation series from Samuel. Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
-rw-r--r--src/compiler/nir/nir_opt_algebraic.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 909ea3daf4..21b9acecbe 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -149,7 +149,9 @@ 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', ('uge', a, b)), ('ult', a, b)),
(('inot', ('ieq', a, b)), ('ine', a, b)),
(('inot', ('ine', a, b)), ('ieq', a, b)),