#include "adt/pdeq.h"
+#include "irpass_t.h"
#include "irflag_t.h"
#include "iredges_t.h"
#include "irtools.h"
/**
* A wrapper around optimize_inplace_2() to be called from a walker.
*/
-static void optimize_in_place_wrapper (ir_node *n, void *env) {
+static void optimize_in_place_wrapper(ir_node *n, void *env) {
ir_node *optimized = optimize_in_place_2(n);
(void) env;
*
* @note current_ir_graph must be set
*/
-static INLINE void do_local_optimize(ir_node *n) {
+static inline void do_local_optimize(ir_node *n) {
/* Handle graph state */
assert(get_irg_phase_state(current_ir_graph) != phase_building);
pdeq *waitq = new_pdeq();
ir_graph *rem = current_ir_graph;
ir_node *end;
- int i, state, n_ka, changed;
+ int state, changed;
current_ir_graph = irg;
ir_reserve_resources(irg, IR_RESOURCE_IRN_LINK);
- end = get_irg_end(irg);
- n_ka = get_End_n_keepalives(end);
-
/* walk over the graph, but don't touch keep-alives */
- irg_walk(get_irg_end_block(irg), NULL, opt_walker, waitq);
-
- /*
- * Optimize keep-alives by removing superfluous ones.
- * Beware: the last transformation might add new keep-alives
- * that keep blocks that are where visited! So, check only the
- * "old" keep-alives, not the new ones!
- *
- * FIXME: it might be better to completely remove this
- * optimization here ...
- */
- for (i = n_ka - 1; i >= 0; --i) {
- ir_node *ka = get_End_keepalive(end, i);
-
- if (irn_visited(ka) && !is_irn_keep(ka)) {
- /* this node can be regularly visited, no need to keep it */
- set_End_keepalive(end, i, get_irg_bad(irg));
- }
- }
- /* now walk again and visit all not yet visited nodes */
- set_irg_visited(current_ir_graph, get_irg_visited(irg) - 1);
- irg_walk(get_irg_end(irg), NULL, opt_walker, waitq);
+ irg_walk_graph(irg, NULL, opt_walker, waitq);
/* any optimized nodes are stored in the wait queue,
* so if it's not empty, the graph has been changed */
if (! state)
edges_deactivate(irg);
+ /* Finally kill BAD and doublets from the keep alives.
+ Doing this AFTER edges where deactivated saves cycles */
+ end = get_irg_end(irg);
+ remove_End_Bads_and_doublets(end);
+
current_ir_graph = rem;
return changed;
}
+
+/* Creates an ir_graph pass for optimize_graph_df. */
+ir_graph_pass_t *optimize_graph_df_pass(const char *name)
+{
+ return def_graph_pass_ret(name ? name : "optimize_graph_df", optimize_graph_df);
+} /* optimize_graph_df_pass */