Module: Mesa
Branch: master
Commit: 1e12dafcac4aac50bc588cead4cc0d6291718edd
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=1e12dafcac4aac50bc588cead4cc0d6291718edd
Author: Eric Anholt <e...@anholt.net>
Date: Fri Nov 1 12:29:12 2013 -0700
glsl: Optimize triop_csel with all-true or all-false.
Reviewed-by: Matt Turner <matts...@gmail.com>
---
src/glsl/opt_algebraic.cpp | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 7863fe8..1b4d319 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -571,6 +571,13 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
}
break;
+ case ir_triop_csel:
+ if (is_vec_one(op_const[0]))
+ return ir->operands[1];
+ if (is_vec_zero(op_const[0]))
+ return ir->operands[2];
+ break;
+
default:
break;
}
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