contrib/gcc/tree-scalar-evolution.c

1322 				tree loop_phi_node,
1326   struct loop *loop = loop_containing_stmt (loop_phi_node);
1327   tree ev = analyze_scalar_evolution (loop, PHI_RESULT (loop_phi_node));
1331   if (ev == PHI_RESULT (loop_phi_node))
1336       for (i = 0; i < PHI_NUM_ARGS (loop_phi_node); i++)
1338 	  tree arg = PHI_ARG_DEF (loop_phi_node, i);
1342 	  bb = PHI_ARG_EDGE (loop_phi_node, i)->src;
1344 	    res = follow_ssa_edge_in_rhs (outer_loop, loop_phi_node,
1360   return follow_ssa_edge_in_rhs (outer_loop, loop_phi_node, ev, halting_phi,
1434 analyze_evolution_in_loop (tree loop_phi_node,
1439   struct loop *loop = loop_containing_stmt (loop_phi_node);
1445       fprintf (dump_file, "  (loop_phi_node = ");
1446       print_generic_expr (dump_file, loop_phi_node, 0);
1450   for (i = 0; i < PHI_NUM_ARGS (loop_phi_node); i++)
1452       tree arg = PHI_ARG_DEF (loop_phi_node, i);
1457       bb = PHI_ARG_EDGE (loop_phi_node, i)->src;
1467 	  res = follow_ssa_edge (loop, ssa_chain, loop_phi_node, &ev_fn, 0);
1473 	 loop_phi_node by following the ssa edges, the
1504 analyze_initial_condition (tree loop_phi_node)
1508   struct loop *loop = bb_for_stmt (loop_phi_node)->loop_father;
1513       fprintf (dump_file, "  (loop_phi_node = \n");
1514       print_generic_expr (dump_file, loop_phi_node, 0);
1518   for (i = 0; i < PHI_NUM_ARGS (loop_phi_node); i++)
1520       tree branch = PHI_ARG_DEF (loop_phi_node, i);
1521       basic_block bb = PHI_ARG_EDGE (loop_phi_node, i)->src;
1560 interpret_loop_phi (struct loop *loop, tree loop_phi_node)
1563   struct loop *phi_loop = loop_containing_stmt (loop_phi_node);
1570 	(phi_loop, PHI_RESULT (loop_phi_node));
1581   init_cond = analyze_initial_condition (loop_phi_node);
1582   res = analyze_evolution_in_loop (loop_phi_node, init_cond);