Initialise and set the "changed"-flag.

[r20971]

diff --git a/ir/lower/lower_switch.c b/ir/lower/lower_switch.c
index 301cba4..726f451 100644 (file)
--- a/ir/lower/lower_switch.c
+++ b/ir/lower/lower_switch.c
@@ -204,6 +204,7 @@ static void find_cond_nodes(ir_node *block, void *ctx)
         * Switch should be transformed into an if cascade.
         * So first order the cases, so we can do a binary search on them.
         */
+       env->changed = 1;
 
        numcases = get_irn_n_outs(cond) - 1;      // does not contain default case
        NEW_ARR_A(case_data_t, cases, numcases);
@@ -255,6 +256,7 @@ void lower_switch(ir_graph *irg, unsigned spare_size)
 
        current_ir_graph = irg;
 
+       env.changed    = 0;
        env.spare_size = spare_size;
 
        remove_critical_cf_edges(irg);