From: Thomas Helland <thomashellan...@gmail.com>
v1 -> v2: Correct indentation
Signed-off-by: Thomas Helland <thomashelland90 at gmail.com>
Reviewed-by: Eric Anholt <eric at anholt.net>
---
src/glsl/opt_algebraic.cpp | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index c179d53..67326c5 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -591,6 +591,18 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
} else if (ir->operands[0]->equals(ir->operands[1])) {
/* (a || a) == a */
return ir->operands[0];
+ } else if ( (op_expr[0] && op_expr[0]->operation == ir_unop_logic_not &&
+ ir->operands[1]->equals(op_expr[0]->operands[0])) ||
+ /* !A || A == 1 */
+ (op_expr[1] && op_expr[1]->operation == ir_unop_logic_not &&
+ ir->operands[0]->equals(op_expr[1]->operands[0])) ) {
+ /* A || !A == 1 */
+ ir_constant_data data;
+
+ for (unsigned i = 0; i < 16; i++)
+ data.b[i] = true;
+
+ return new(mem_ctx) ir_constant(ir->type, &data);
}
break;
--
2.0.3
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