contrib/gcc/sched-rgn.c

506   int *max_hdr, *dfs_nr, *degree;
666      to hold degree counts.  */
667   degree = dfs_nr;
670     degree[bb->index] = EDGE_COUNT (bb->preds);
747                 /* We save degree in case when we meet a too_large region
748 		   and cancel it.  We need a correct degree later when
750                 memcpy (degree1, degree, last_basic_block * sizeof (int));
752 	      /* Decrease degree of all I's successors for topological
756 		  --degree[e->dest->index];
835 	     the degree of a node if it is the target of a backedge
875 		  degree[bb->index] = -1;
884 		  /* Remove blocks from queue[] when their in degree
893 		      if (degree[child] == 0)
897 			  degree[child] = -1;
905 			      --degree[e->dest->index];
915                   int *t = degree;
917                   degree = degree1;
938           extend_rgns (degree, &idx, header, max_hdr);
945     if (degree[bb->index] >= 0)
957   free (degree);
1035 extend_rgns (int *degree, int *idxp, sbitmap header, int *loop_hdr)
1050       if (degree[bbn] >= 0)
1180 	      degree[bbn] = -1;
1190 		  degree[e->dest->index]--;
1226 		      gcc_assert (degree[succn] == 0);
1228 		      degree[succn] = -1;
1247 			  degree[e->dest->index]--;