[Mesa-dev] [PATCH 1/2] nir: Add algebraic opt for no-op iand.

[Eric Anholt]

I lazily generated some of these in VC4 NIR lowering.
---
 src/glsl/nir/nir_opt_algebraic.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py
index 3068445..d7c1740 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -132,6 +132,7 @@ optimizations = [
    # Logical and bit operations
    (('fand', a, 0.0), 0.0),
    (('iand', a, a), a),
+   (('iand', a, ~0), a),
    (('iand', a, 0), 0),
    (('ior', a, a), a),
    (('ior', a, 0), a),
-- 
2.1.4