cleanup

Removes obsolete debug output and confusing comments

diff --git a/ir/opt/combo.c b/ir/opt/combo.c
index 903f875..66e7769 100644 (file)
--- a/ir/opt/combo.c
+++ b/ir/opt/combo.c
@@ -3029,16 +3029,9 @@ static void apply_cf(ir_node *block, void *ctx)
                        }
                }
 
-               /* the EndBlock is always reachable even if the analysis
-                  finds out the opposite :-) */
-               if (block != get_irg_end_block(current_ir_graph)) {
-                       /* mark dead blocks */
-                       //set_Block_dead(block);
-                       //ir_graph *irg = get_irn_irg(block);
-                       //exchange(block, get_irg_bad(irg));
-                       DB((dbg, LEVEL_1, "Removing dead %+F\n", block));
-               } else {
-                       /* the endblock is unreachable */
+               if (block == get_irg_end_block(current_ir_graph)) {
+                       /* Analysis found out that the end block is unreachable,
+                        * hence we remove all its control flow predecessors. */
                        set_irn_in(block, 0, NULL);
                }
                return;