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authorMatt Turner <mattst88@gmail.com>2016-02-01 16:34:46 -0800
committerMatt Turner <mattst88@gmail.com>2016-02-08 20:38:17 -0800
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nir: Add opt_algebraic rules for xor with zero.
instructions in affected programs: 668 -> 664 (-0.60%) helped: 4 Reviewed-by: Eduardo Lima Mitev <elima@igalia.com> Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Diffstat (limited to 'src/compiler/nir/nir_opt_algebraic.py')
-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 e7765fa..60df69f 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -149,6 +149,8 @@ optimizations = [
(('ior', a, 0), a),
(('fxor', a, a), 0.0),
(('ixor', a, a), 0),
+ (('fxor', a, 0.0), a),
+ (('ixor', a, 0), a),
(('inot', ('inot', a)), a),
# DeMorgan's Laws
(('iand', ('inot', a), ('inot', b)), ('inot', ('ior', a, b))),