methods need no offset

[libfirm] / ir / opt / ifconv.c

diff --git a/ir/opt/ifconv.c b/ir/opt/ifconv.c
index b5c453e..0d1307a 100644 (file)
--- a/ir/opt/ifconv.c
+++ b/ir/opt/ifconv.c
@@ -348,6 +348,7 @@ restart:
                                        cond, projx0, projx1
                                ));
 
+                               /* remove critical edges */
                                env->changed = true;
                                prepare_path(block, i, dependency);
                                prepare_path(block, j, dependency);
@@ -355,7 +356,7 @@ restart:
 
                                mux_block = get_nodes_block(cond);
                                cond_dbg = get_irn_dbg_info(cond);
-                               do {
+                               do { /* generate Mux nodes in mux_block for Phis in block */
                                        ir_node* val_i = get_irn_n(phi, i);
                                        ir_node* val_j = get_irn_n(phi, j);
                                        ir_node* mux;
@@ -393,6 +394,7 @@ restart:
                                        phi = next_phi;
                                } while (phi != NULL);
 
+                               /* move mux operands into mux_block */
                                exchange(get_nodes_block(get_irn_n(block, i)), mux_block);
                                exchange(get_nodes_block(get_irn_n(block, j)), mux_block);