fix warning because of now ignored invalidate flag

diff --git a/ir/opt/convopt.c b/ir/opt/convopt.c
index 9fb7e55..32556e2 100644 (file)
--- a/ir/opt/convopt.c
+++ b/ir/opt/convopt.c
@@ -316,7 +316,6 @@ static void conv_opt_walker(ir_node *node, void *data)
 static ir_graph_state_t do_deconv(ir_graph *irg)
 {
        bool changed;
-       bool invalidate = false;
        FIRM_DBG_REGISTER(dbg, "firm.opt.conv");
 
        DB((dbg, LEVEL_1, "===> Performing conversion optimization on %+F\n", irg));
@@ -325,7 +324,6 @@ static ir_graph_state_t do_deconv(ir_graph *irg)
                changed = false;
                irg_walk_graph(irg, NULL, conv_opt_walker, &changed);
                local_optimize_graph(irg);
-               invalidate |= changed;
        } while (changed);
 
        return 0;