no need to call update_liveness for initial live in scheduler

[r14379]

diff --git a/ir/be/belistsched.c b/ir/be/belistsched.c
index 300f920..7238e9d 100644 (file)
--- a/ir/be/belistsched.c
+++ b/ir/be/belistsched.c
@@ -296,10 +296,11 @@ static int get_num_successors(ir_node *irn) {
                        ir_node *proj = get_edge_src_irn(edge);
                        ir_mode *mode = get_irn_mode(proj);
 
-                       if (mode == mode_T)
+                       if (mode == mode_T) {
                                sum += get_num_successors(proj);
-                       else if (mode_is_datab(mode))
+                       } else if (mode_is_datab(mode)) {
                                sum += get_irn_n_edges(proj);
+                       }
                }
        }
        else {
@@ -315,7 +316,7 @@ static int get_num_successors(ir_node *irn) {
 
 /**
  * Adds irn to @p live, updates all inputs that this user is scheduled
- * and counts all of it's non scheduled users.
+ * and counts all of its non scheduled users.
  */
 static void update_sched_liveness(block_sched_env_t *env, ir_node *irn) {
        int i;
@@ -328,8 +329,7 @@ static void update_sched_liveness(block_sched_env_t *env, ir_node *irn) {
                ir_node *in = get_irn_in_or_dep(irn, i);
 
                /* if in is a proj: update predecessor */
-               while (is_Proj(in))
-                       in = get_Proj_pred(in);
+               in = skip_Proj(in);
 
                /* if in is still in the live set: reduce number of users by one */
                if (ir_nodeset_contains(&env->live, in)) {
@@ -509,10 +509,9 @@ static void list_sched_block(ir_node *block, void *env_ptr)
                                if (get_nodes_block(operand) == block) {
                                        ready = 0;
                                        break;
-                               }
-                               else {
+                               } else {
                                        /* live in values increase register pressure */
-                                       update_sched_liveness(&be, operand);
+                                       ir_nodeset_insert(&be.live, operand);
                                }
                        }