any debug information to DEBUG_FILE. Return true if anything other than a
standard edge insertion is done. */
-static bool
+static void
analyze_edges_for_bb (basic_block bb, FILE *debug_file)
{
edge e;
FOR_EACH_EDGE (e, ei, bb->preds)
if (PENDING_STMT (e))
bsi_commit_one_edge_insert (e, NULL);
- return false;
+ return;
}
/* Find out how many edges there are with interesting pending stmts on them.
Commit the stmts on edges we are not interested in. */
{
if (single_edge)
bsi_commit_one_edge_insert (single_edge, NULL);
- return false;
+ return;
}
/* Ensure that we have empty worklists. */
VARRAY_POP_ALL (edge_leader);
VARRAY_POP_ALL (stmt_list);
bitmap_clear (leader_has_match);
- return false;
+ return;
}
VARRAY_POP_ALL (edge_leader);
VARRAY_POP_ALL (stmt_list);
bitmap_clear (leader_has_match);
-
- return true;
}
perform_edge_inserts (FILE *dump_file)
{
basic_block bb;
- bool changed = false;
if (dump_file)
fprintf(dump_file, "Analyzing Edge Insertions.\n");
+ /* analyze_edges_for_bb calls make_forwarder_block, which tries to
+ incrementally update the dominator information. Since we don't
+ need dominator information after this pass, go ahead and free the
+ dominator information. */
+ free_dominance_info (CDI_DOMINATORS);
+ free_dominance_info (CDI_POST_DOMINATORS);
+
FOR_EACH_BB (bb)
- changed |= analyze_edges_for_bb (bb, dump_file);
+ analyze_edges_for_bb (bb, dump_file);
- changed |= analyze_edges_for_bb (EXIT_BLOCK_PTR, dump_file);
+ analyze_edges_for_bb (EXIT_BLOCK_PTR, dump_file);
/* Clear out any tables which were created. */
edge_leader = NULL;
BITMAP_FREE (leader_has_match);
- if (changed)
- {
- free_dominance_info (CDI_DOMINATORS);
- free_dominance_info (CDI_POST_DOMINATORS);
- }
-
#ifdef ENABLE_CHECKING
{
edge_iterator ei;