total instructions in shared programs: 1627754 -> 1624534 (-0.20%)
instructions in affected programs: 45748 -> 42528 (-7.04%)
GAINED: 3
LOST: 0
(serious sam, humus domino demo)
---
Note, Matt has a similar patch specific to i965/fs. This makes the
change global, though apparently less effectively than i965's did.
src/glsl/opt_algebraic.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 918982a..4a96a55 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -508,6 +508,8 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
return ir->operands[0];
} else if (is_vec_one(op_const[2])) {
return ir->operands[1];
+ } else if (ir->operands[0]->equals(ir->operands[1])) {
+ return ir->operands[0];
}
break;
--
1.8.5.2
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