[Mesa-dev] [PATCH 2/5] nir: Recognize i2b(b2i(x)) as x.

[Matt Turner]

Helps the same set of programs as the previous commit.

instructions in affected programs:     4490 -> 4346 (-3.21%)
helped:                                8
---
 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 92928cf..fda4bd5 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -188,6 +188,7 @@ optimizations = [
    (('fcsel', a, b, b), b),
 
    # Conversions
+   (('i2b', ('b2i', a)), a),
    (('f2i', ('ftrunc', a)), ('f2i', a)),
    (('f2u', ('ftrunc', a)), ('f2u', a)),
 
-- 
2.0.5