#include "irnode_t.h"
#include "irgraph_t.h"
+#include "beutil.h"
#include "besched.h"
typedef unsigned int sched_timestep_t;
/**
* The schedule structure which is present at each ir node.
+ *
+ * Currently, only basic blocks are scheduled. The list head of
+ * every block schedule list is the Block list.
*/
typedef struct _sched_info_t {
struct list_head list; /**< The list head to list the nodes in a schedule. */
* @param irn The node to check for.
* @return 1, if the node consumes/produces data, false if not.
*/
-static INLINE int to_appear_in_schedule(ir_node *irn)
+static INLINE int to_appear_in_schedule(const ir_node *irn)
{
- int i, n;
-
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
- ir_node *op = get_irn_n(irn, i);
- if(mode_is_datab(get_irn_mode(op)))
- return 1;
- }
-
- return mode_is_datab(get_irn_mode(irn));
+ switch(get_irn_opcode(irn)) {
+ case iro_Start:
+ case iro_Jmp:
+ case iro_Break:
+ return 1;
+ default:
+ return is_data_node(irn);
+ }
}
/**
*/
static INLINE ir_node *_sched_add_before(ir_node *before, ir_node *irn)
{
- sched_info_t *info = get_irn_sched_info(irn);
+ sched_info_t *info = get_irn_sched_info(irn);
list_add_tail(&info->list, &get_irn_sched_info(before)->list);
- _sched_set_time_stamp(irn);
- info->scheduled = 1;
+ _sched_set_time_stamp(irn);
+ info->scheduled = 1;
return irn;
}
*/
static INLINE ir_node *_sched_add_after(ir_node *after, ir_node *irn)
{
- sched_info_t *info = get_irn_sched_info(irn);
+ sched_info_t *info = get_irn_sched_info(irn);
list_add(&info->list, &get_irn_sched_info(after)->list);
- _sched_set_time_stamp(irn);
- info->scheduled = 1;
+ _sched_set_time_stamp(irn);
+ info->scheduled = 1;
return irn;
}
/**
- * Check, if thenode is scheduled.
+ * Remove a node from the scheduled.
+ * @param irn The node.
+ */
+static INLINE void _sched_remove(ir_node *irn)
+{
+ sched_info_t *info = get_irn_sched_info(irn);
+ list_del(&info->list);
+ INIT_LIST_HEAD(&info->list);
+ info->scheduled = 0;
+}
+
+/**
+ * Check, if the node is scheduled.
* @param irn The node.
* @return 1, if the node is scheduled, 0 if not.
*/
*/
extern int sched_verify_irg(ir_graph *irg);
+/**
+ * Checks, if one node is scheduled before another.
+ * @param n1 A node.
+ * @param n2 Another node.
+ * @return 1, if n1 is in front of n2 in the schedule, 0 else.
+ * @note Both nodes must be in the same block.
+ */
+static INLINE int _sched_comes_after(const ir_node *n1, const ir_node *n2)
+{
+ assert(_sched_is_scheduled(n1));
+ assert(_sched_is_scheduled(n2));
+ assert(get_nodes_block(n1) == get_nodes_block(n2));
+ return _sched_get_time_step(n1) < _sched_get_time_step(n2);
+}
+
+/**
+ * A predicate for a node.
+ * @param irn The node.
+ * @param data The custom data.
+ * @return 1 if irn should be skipped. Else 0.
+ */
+typedef int (sched_predicator_t)(const ir_node *irn, void *data);
+
-#define sched_get_time_step(irn) _sched_get_time_step(irn)
-#define sched_has_succ(irn) _sched_has_succ(irn)
-#define sched_has_prev(irn) _sched_has_prev(irn)
-#define sched_succ(irn) _sched_succ(irn)
-#define sched_prev(irn) _sched_prev(irn)
-#define sched_first(irn) _sched_first(irn)
-#define sched_last(irn) _sched_last(irn)
-#define sched_add_before(before, irn) _sched_add_before(before, irn)
-#define sched_add_after(after, irn) _sched_add_after(after, irn)
-#define sched_is_scheduled(irn) _sched_is_scheduled(irn)
-#define sched_cmp(a, b) _sched_cmp(a, b)
+int sched_skip_cf_predicator(const ir_node *irn, void *data);
+int sched_skip_phi_predicator(const ir_node *irn, void *data);
+
+/**
+ * Skip nodes in a schedule.
+ * @param from The node to start from.
+ * @param forward The direction (1 for forward, 0 for backward).
+ * @param predicator The one who decides what is skipped.
+ * @param data Food for the predicator.
+ * @return The first node rejected by the predicator or the block
+ * itself if none was rejected.
+ */
+extern ir_node *sched_skip(ir_node *from, int forward,
+ sched_predicator_t *predicator, void *data);
+
+#define sched_get_time_step(irn) _sched_get_time_step(irn)
+#define sched_has_next(irn) _sched_has_next(irn)
+#define sched_has_prev(irn) _sched_has_prev(irn)
+#define sched_next(irn) _sched_next(irn)
+#define sched_prev(irn) _sched_prev(irn)
+#define sched_first(irn) _sched_first(irn)
+#define sched_last(irn) _sched_last(irn)
+#define sched_add_before(before, irn) _sched_add_before(before, irn)
+#define sched_add_after(after, irn) _sched_add_after(after, irn)
+#define sched_remove(irn) _sched_remove(irn)
+#define sched_is_scheduled(irn) _sched_is_scheduled(irn)
+#define sched_comes_after(n1, n2) _sched_comes_after(n1, n1)
+#define sched_cmp(a, b) _sched_cmp(a, b)
#endif