#ifdef HAVE_CONFIG_H
-#include "config.h"
+# include "config.h"
#endif
-#include <stdlib.h>
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
#include "impl.h"
#include "irprintf.h"
#include "irgwalk.h"
#include "irnode_t.h"
+#include "irgraph_t.h"
#include "iredges_t.h"
#include "debug.h"
FIRM_IMPL1(sched_last, ir_node *, const ir_node *)
FIRM_IMPL2(sched_add_after, ir_node *, ir_node *, ir_node *)
FIRM_IMPL2(sched_add_before, ir_node *, ir_node *, ir_node *)
+FIRM_IMPL2(sched_comes_after, int, const ir_node *, const ir_node *)
FIRM_IMPL1_VOID(sched_remove, ir_node *)
size_t sched_irn_data_offset = 0;
}
}
-void be_sched_dump(FILE *f, const ir_graph *irg)
+void be_sched_dump(FILE *f, ir_graph *irg)
{
- irg_block_walk_graph((ir_graph *) irg, block_sched_dumper, NULL, f);
+ irg_block_walk_graph(irg, block_sched_dumper, NULL, f);
}
+/* Init the scheduling stuff. */
void be_sched_init(void)
{
sched_irn_data_offset = register_additional_node_data(sizeof(sched_info_t));
}
}
-
+/* Verify a schedule. */
int sched_verify(const ir_node *block)
{
firm_dbg_module_t *dbg_sched = firm_dbg_register("be.sched");
if(n <= 0)
return 1;
- save_time_step = malloc(n * sizeof(save_time_step[0]));
- save_nodes = malloc(n * sizeof(save_nodes[0]));
+ save_time_step = xmalloc(n * sizeof(save_time_step[0]));
+ save_nodes = xmalloc(n * sizeof(save_nodes[0]));
i = 0;
sched_foreach(block, irn) {
return res;
}
-static void sched_verify_walker(ir_node *irn, void *data)
+/**
+ * Block-Walker: verify the current block and update the status
+ */
+static void sched_verify_walker(ir_node *block, void *data)
{
int *res = data;
- *res &= sched_verify(irn);
+ *res &= sched_verify(block);
}
+/* Verify the schedules in all blocks of the irg. */
int sched_verify_irg(ir_graph *irg)
{
int res = 1;
return res;
}
-int (sched_comes_after)(const ir_node *n1, const ir_node *n2)
-{
- return _sched_comes_after(n1, n2);
-}
-
int sched_skip_cf_predicator(const ir_node *irn, void *data) {
arch_env_t *ae = data;
return arch_irn_classify(ae, irn) == arch_irn_class_branch;
return is_Phi(irn);
}
-extern ir_node *sched_skip(ir_node *from, int forward,
- sched_predicator_t *predicator, void *data)
+/* Skip nodes in a schedule. */
+ir_node *sched_skip(ir_node *from, int forward, sched_predicator_t *predicator, void *data)
{
- const ir_node *bl = get_block(from);
- ir_node *curr;
+ const ir_node *bl = get_block(from);
+ ir_node *curr;
- for(curr = from; curr != bl && predicator(curr, data);
- curr = forward ? sched_next(curr) : sched_prev(curr));
- return curr;
+ if (is_Block(from))
+ from = forward ? sched_next(from) : sched_prev(from);
+
+ for(curr = from; curr != bl && predicator(curr, data); curr = forward ? sched_next(curr) : sched_prev(curr));
+
+ return curr;
+}
+
+/** A simple forward single linked list. */
+typedef struct {
+ ir_node *start; /**< start of the list */
+ ir_node *end; /**< last block in the list */
+ unsigned n_blks; /**< number of blocks in the list */
+} anchor;
+
+/**
+ * Ext-Block walker: create a block schedule
+ */
+static void create_block_list(ir_extblk *blk, void *env) {
+ anchor *list = env;
+ int i, n;
+
+ for (i = 0, n = get_extbb_n_blocks(blk); i < n; ++i) {
+ ir_node *block = get_extbb_block(blk, i);
+
+ set_irn_link(block, NULL);
+ if (list->start)
+ set_irn_link(list->end, block);
+ else
+ list->start = block;
+
+ list->end = block;
+ ++list->n_blks;
+ }
+}
+
+/*
+ * Calculates a block schedule. The schedule is stored as a linked
+ * list starting at the start_block of the irg.
+ */
+ir_node **sched_create_block_schedule(ir_graph *irg)
+{
+ anchor list;
+ ir_node **blk_list, *b, *n;
+ unsigned i;
+
+ /* schedule extended basic blocks */
+ compute_extbb(irg);
+
+ list.start = NULL;
+ list.end = NULL;
+ list.n_blks = 0;
+ irg_extblock_walk_graph(irg, NULL, create_block_list, &list);
+
+ /** create an array, so we can go forward and backward */
+ blk_list = NEW_ARR_D(ir_node *, irg->obst,list.n_blks);
+
+ for (i = 0, b = list.start; b; b = n, ++i) {
+ n = get_irn_link(b);
+ set_irn_link(b, INT_TO_PTR(i));
+
+ blk_list[i] = b;
+ }
+ return blk_list;
}