Cuts two instructions out of SynMark's Gl32VSInstancing benchmark.
---
src/glsl/opt_algebraic.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 5c49a78..8494bd9 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -528,6 +528,14 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
if (is_vec_two(op_const[0]))
return expr(ir_unop_exp2, ir->operands[1]);
+ if (is_vec_two(op_const[1])) {
+ ir_variable *x = new(ir) ir_variable(ir->operands[1]->type, "x",
+ ir_var_temporary);
+ base_ir->insert_before(x);
+ base_ir->insert_before(assign(x, ir->operands[0]));
+ return mul(x, x);
+ }
+
break;
case ir_unop_rcp:
--
1.8.3.2
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