# include "config.h"
#endif
+#ifdef HAVE_MALLOC_H
+# include <malloc.h>
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
#include <assert.h>
#include "xmalloc.h"
* we will lose blocks and thereby generate memory leaks.
*/
void optimize_cf(ir_graph *irg) {
- int i, n;
+ int i, j, n;
ir_node **in;
ir_node *end = get_irg_end(irg);
ir_graph *rem = current_ir_graph;
/* Handle graph state */
assert(get_irg_phase_state(irg) != phase_building);
- if (get_irg_outs_state(current_ir_graph) == outs_consistent)
- set_irg_outs_inconsistent(current_ir_graph);
- if (get_irg_dom_state(current_ir_graph) == dom_consistent)
- set_irg_dom_inconsistent(current_ir_graph);
+ set_irg_outs_inconsistent(current_ir_graph);
+ set_irg_extblk_inconsistent(current_ir_graph);
+ set_irg_loopinfo_inconsistent(current_ir_graph);
+ set_irg_doms_inconsistent(current_ir_graph);
if (dom_state == dom_consistent && get_opt_optimize() && get_opt_unreachable_code()) {
ir_node *end = get_irg_end(irg);
ir_node *ka = get_End_keepalive(end, i);
if (is_Block(ka)) {
+ /* do NOT keep dead blocks */
if (get_Block_dom_depth(ka) == -1)
set_End_keepalive(end, i, new_Bad());
}
- else if (is_Block_dead(get_nodes_block(ka)) || get_Block_dom_depth(get_nodes_block(ka)) == -1)
+ else if (is_Block_dead(get_nodes_block(ka)) ||
+ get_Block_dom_depth(get_nodes_block(ka)) == -1)
+ /* do NOT keep nodes in dead blocks */
set_End_keepalive(end, i, new_Bad());
}
}
/* Walk all keep alives, optimize them if block, add to new in-array
for end if useful. */
- in = NEW_ARR_F (ir_node *, 1);
- in[0] = get_nodes_block(end);
+ n = get_End_n_keepalives(end);
+ if (n > 0)
+ NEW_ARR_A (ir_node *, in, n);
inc_irg_visited(current_ir_graph);
- for (i = 0, n = get_End_n_keepalives(end); i < n; i++) {
+ /* fix the keep alive */
+ for (i = j = 0; i < n; i++) {
ir_node *ka = get_End_keepalive(end, i);
if (irn_not_visited(ka)) {
- if ((get_irn_op(ka) == op_Block) && Block_not_block_visited(ka)) {
+ ir_op *op = get_irn_op(ka);
+
+ if ((op == op_Block) && Block_not_block_visited(ka)) {
set_irg_block_visited(current_ir_graph, /* Don't walk all the way to Start. */
get_irg_block_visited(current_ir_graph)-1);
irg_block_walk(ka, optimize_blocks, NULL, NULL);
mark_irn_visited(ka);
- ARR_APP1 (ir_node *, in, ka);
- } else if (get_irn_op(ka) == op_Phi) {
+ in[j++] = ka;
+ } else if (op == op_Phi) {
mark_irn_visited(ka);
if (! is_Block_dead(get_nodes_block(ka)))
- ARR_APP1 (ir_node *, in, ka);
- } else if (get_irn_op(ka) == op_IJmp) {
+ in[j++] = ka;
+ } else if (is_op_keep(op)) {
mark_irn_visited(ka);
if (! is_Block_dead(get_nodes_block(ka)))
- ARR_APP1 (ir_node *, in, ka);
+ in[j++] = ka;
}
}
}
- DEL_ARR_F(end->in); /* GL @@@ tut nicht! MMB Warum? */
- end->in = in;
-
+ if (j != n)
+ set_End_keepalives(end, j, in);
/* the verifier doesn't work yet with floating nodes */
if (get_irg_pinned(irg) == op_pin_state_pinned) {