From 9f02e3ab03da91162fc0c64b91a2e5ff213dff9b Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Mon, 1 Feb 2016 16:34:46 -0800 Subject: [PATCH] nir: Add opt_algebraic rules for xor with zero. instructions in affected programs: 668 -> 664 (-0.60%) helped: 4 Reviewed-by: Eduardo Lima Mitev Reviewed-by: Jason Ekstrand --- src/compiler/nir/nir_opt_algebraic.py | 2 ++ 1 file changed, 2 insertions(+) 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))), -- 2.7.4