* @date 20.10.2004
* @author Sebastian Hack
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include <stdio.h>
#include <stdarg.h>
#include "fourcc.h"
#include "obst.h"
-#include "irouts.h"
+#include "list.h"
+#include "iterator.h"
+
+#include "iredges_t.h"
#include "irgwalk.h"
#include "irnode_t.h"
#include "irmode_t.h"
-#include "list.h"
-#include "iterator.h"
#include "irdump.h"
#include "irprintf_t.h"
+#include "debug.h"
#include "besched_t.h"
#include "beutil.h"
+#include "belive_t.h"
#include "belistsched.h"
+#include "firm/bearch_firm.h"
+
/**
* Scheduling environment for the whole graph.
*/
typedef struct _sched_env_t {
- const ir_graph *irg; /**< The graph to schedule. */
- list_sched_selector_t *select; /**< The node selector. */
- void *select_env; /**< A pointer to give to the selector. */
+ const ir_graph *irg; /**< The graph to schedule. */
+ const list_sched_selector_t *selector; /**< The node selector. */
+ void *selector_env; /**< A pointer to give to the selector. */
} sched_env_t;
-ir_node *trivial_selector(void *env, ir_node *block, int curr_time,
- pset *already_scheduled, pset *ready_list)
+#if 0
+/*
+ * Ugly global variable for the compare function
+ * since qsort(3) does not pass an extra pointer.
+ */
+static ir_node *curr_bl = NULL;
+
+static int cmp_usage(const void *a, const void *b)
{
- ir_node *res = pset_first(ready_list);
- pset_break(ready_list);
+ struct trivial_sched_env *env;
+ const ir_node *p = a;
+ const ir_node *q = b;
+ int res = 0;
+
+ res = is_live_end(env->curr_bl, a) - is_live_end(env->curr_bl, b);
+
+ /*
+ * One of them is live at the end of the block.
+ * Then, that one shall be scheduled at after the other
+ */
+ if(res != 0)
+ return res;
+
+
return res;
}
+#endif
+
+static ir_node *trivial_select(void *env, void *block_env,
+ const struct list_head *sched_head,
+ int curr_time, pset *ready_set)
+{
+ ir_node *res;
+
+#if 0
+ int i, n = pset_count(ready_set);
+ ir_node *irn;
+ ir_node **ready = alloca(n * sizeof(ready[0]));
+
+ for(irn = pset_first(ready_set); irn; irn = pset_next(ready_set))
+ ready[i++] = irn;
+#endif
+
+ res = pset_first(ready_set);
+ pset_break(ready_set);
+ return res;
+}
+
+static const list_sched_selector_t trivial_selector_struct = {
+ NULL,
+ NULL,
+ trivial_select,
+ NULL,
+ NULL
+};
+
+const list_sched_selector_t *trivial_selector = &trivial_selector_struct;
static void list_sched_block(ir_node *block, void *env_ptr);
-void list_sched(ir_graph *irg, list_sched_selector_t *selector, void *select_env)
+void list_sched(const struct _arch_isa_t *isa, ir_graph *irg)
{
sched_env_t env;
+ const list_sched_selector_t *selector;
memset(&env, 0, sizeof(env));
- env.select = selector;
- env.select_env = select_env;
+ selector = env.selector = isa->impl->get_list_sched_selector(isa);
+ env.selector_env = selector->init_graph ? selector->init_graph(isa, irg) : NULL;
env.irg = irg;
- /* Normalize proj nodes. */
- normalize_proj_nodes(irg);
-
- /* Compute the outs */
- if(get_irg_outs_state(irg) != outs_consistent)
- compute_outs(irg);
-
- /* Dump the graph. */
- dump_ir_block_graph(irg, "-before-sched");
+ /* Assure, that the out edges are computed */
+ edges_assure(irg);
/* Schedule each single block. */
irg_block_walk_graph(irg, list_sched_block, NULL, &env);
+
+ if(selector->finish_graph)
+ selector->finish_graph(env.selector_env, irg);
}
pset *ready_set;
pset *already_scheduled;
ir_node *block;
+ firm_dbg_module_t *dbg;
} block_sched_env_t;
-
-
-/**
- * Checks, if a node is to appear in a schedule. Such nodes either
- * consume real data (mode datab) or produce such.
- * @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)
-{
- 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));
-}
-
-
/**
* Try to put a node in the ready set.
* @param env The block scheduler environment.
*/
static INLINE int make_ready(block_sched_env_t *env, ir_node *irn)
{
- int i, n;
+ int i, n;
- /* Blocks cannot be scheduled. */
- if(is_Block(irn))
- return 0;
+ /* Blocks cannot be scheduled. */
+ if(is_Block(irn))
+ return 0;
- /*
- * Check, if the given ir node is in a different block as the
- * currently scheduled one. If that is so, don't make the node ready.
- */
- if(env->block != get_nodes_block(irn))
- return 0;
+ /*
+ * Check, if the given ir node is in a different block as the
+ * currently scheduled one. If that is so, don't make the node ready.
+ */
+ if(env->block != get_nodes_block(irn))
+ return 0;
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
- ir_node *op = get_irn_n(irn, i);
+ for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
+ ir_node *op = get_irn_n(irn, i);
- /* If the operand is local to the scheduled block and not yet
- * scheduled, this nodes cannot be made ready, so exit. */
- if(!pset_find_ptr(env->already_scheduled, op) && get_nodes_block(op) == env->block)
- return 0;
- }
+ /* If the operand is local to the scheduled block and not yet
+ * scheduled, this nodes cannot be made ready, so exit. */
+ if(!pset_find_ptr(env->already_scheduled, op) && get_nodes_block(op) == env->block)
+ return 0;
+ }
- ir_debugf("\tmaking ready: %n\n", irn);
- pset_insert_ptr(env->ready_set, irn);
+ DBG((env->dbg, LEVEL_2, "\tmaking ready: %+F\n", irn));
+ pset_insert_ptr(env->ready_set, irn);
- return 1;
+ return 1;
}
/**
*/
static INLINE void make_users_ready(block_sched_env_t *env, ir_node *irn)
{
- int i, n;
+ const ir_edge_t *edge;
- for(i = 0, n = get_irn_n_outs(irn); i < n; ++i) {
- ir_node *user = get_irn_out(irn, i);
- make_ready(env, user);
+ foreach_out_edge(irn, edge) {
+ ir_node *user = edge->src;
+ if(!is_Phi(user))
+ make_ready(env, user);
}
}
*/
static int node_cmp_func(const void *p1, const void *p2)
{
- return p1 != p2;
+ return p1 != p2;
}
/**
*/
static ir_node *add_to_sched(block_sched_env_t *env, ir_node *irn)
{
- /* If the node consumes/produces data, it is appended to the schedule
- * list, otherwise, it is not put into the list */
- if(to_appear_in_schedule(irn)) {
- sched_info_t *info = get_irn_sched_info(irn);
- INIT_LIST_HEAD(&info->list);
- sched_add(env->block, irn);
-
- ir_debugf("\tadding %n\n", irn);
- }
+ /* If the node consumes/produces data, it is appended to the schedule
+ * list, otherwise, it is not put into the list */
+ if(to_appear_in_schedule(irn)) {
+ sched_info_t *info = get_irn_sched_info(irn);
+ INIT_LIST_HEAD(&info->list);
+ info->scheduled = 1;
+ sched_add_before(env->block, irn);
+
+ DBG((env->dbg, LEVEL_2, "\tadding %+F\n", irn));
+ }
- /* Insert the node in the set of all already scheduled nodes. */
- pset_insert_ptr(env->already_scheduled, irn);
+ /* Insert the node in the set of all already scheduled nodes. */
+ pset_insert_ptr(env->already_scheduled, irn);
- /* Remove the node from the ready set */
- if(pset_find_ptr(env->ready_set, irn))
- pset_remove_ptr(env->ready_set, irn);
+ /* Remove the node from the ready set */
+ if(pset_find_ptr(env->ready_set, irn))
+ pset_remove_ptr(env->ready_set, irn);
- return irn;
+ return irn;
}
*/
static void add_tuple_projs(block_sched_env_t *env, ir_node *irn)
{
- int i, n;
+ const ir_edge_t *edge;
+
assert(get_irn_mode(irn) == mode_T && "Mode of node must be tuple");
- for(i = 0, n = get_irn_n_outs(irn); i < n; ++i) {
- ir_node *out = get_irn_out(irn, i);
+ foreach_out_edge(irn, edge) {
+ ir_node *out = edge->src;
assert(is_Proj(out) && "successor of a modeT node must be a proj");
* Also the outs must have been computed.
*
* @param block The block node.
- * @param env Schedulting environment.
+ * @param env Scheduling environment.
*/
static void list_sched_block(ir_node *block, void *env_ptr)
{
+ void *block_env = NULL;
sched_env_t *env = env_ptr;
block_sched_env_t be;
-
+ const list_sched_selector_t *selector = env->selector;
+ const ir_edge_t *edge;
ir_node *irn;
int j, m;
int phi_seen = 0;
INIT_LIST_HEAD(&info->list);
/* Initialize the block scheduling environment */
+ be.dbg = firm_dbg_register("firm.be.sched");
be.block = block;
be.curr_time = 0;
- be.ready_set = new_pset(node_cmp_func, get_irn_n_outs(block));
- be.already_scheduled = new_pset(node_cmp_func, get_irn_n_outs(block));
+ be.ready_set = new_pset(node_cmp_func, get_irn_n_edges(block));
+ be.already_scheduled = new_pset(node_cmp_func, get_irn_n_edges(block));
+
+ firm_dbg_set_mask(be.dbg, 0);
- ir_debugf("scheduling %n\n", block);
+ if(selector->init_block)
+ block_env = selector->init_block(env->selector_env, block);
+
+ DBG((be.dbg, LEVEL_1, "scheduling %+F\n", block));
/* Then one can add all nodes are ready to the set. */
- for(int i = 0, n = get_irn_n_outs(block); i < n; ++i) {
- ir_node *irn = get_irn_out(block, i);
+ foreach_out_edge(block, edge) {
+ ir_node *irn = get_edge_src_irn(edge);
+
+ /* Skip the end node because of keepalive edges. */
+ if(get_irn_opcode(irn) == iro_End)
+ continue;
/* Phi functions are scheduled immediately, since they only transfer
* data flow from the predecessors to this block. */
/* Other nodes must have all operands in other blocks to be made
* ready */
else {
- bool ready = true;
+ int ready = 1;
/* Check, if the operands of a node are not local to this block */
for(j = 0, m = get_irn_arity(irn); j < m; ++j) {
ir_node *operand = get_irn_n(irn, j);
if(get_nodes_block(operand) == block) {
- ready = false;
+ ready = 0;
break;
}
}
/* Make the node ready, if all operands live in a foreign block */
if(ready) {
- ir_debugf("\timmediately ready: %n\n", irn);
+ DBG((be.dbg, LEVEL_2, "\timmediately ready: %+F\n", irn));
make_ready(&be, irn);
}
}
be.curr_time += phi_seen;
while(pset_count(be.ready_set) > 0) {
- ir_debugf("\tready set: %*n\n", pset_iterator, be.ready_set);
- // pset_print(stdout, be.ready_set, irn_printer);
+ // DBG((be.dbg, LEVEL_2, "\tready set: %*n\n", pset_iterator, be.ready_set));
/* select a node to be scheduled and check if it was ready */
- irn = env->select(env->select_env, block, be.curr_time,
- be.already_scheduled, be.ready_set);
+ irn = selector->select(env->selector_env, block_env, &info->list, be.curr_time, be.ready_set);
- ir_debugf("\tpicked node %n\n", irn);
+ DBG((be.dbg, LEVEL_3, "\tpicked node %+F\n", irn));
/* Add the node to the schedule. */
add_to_sched(&be, irn);
pset_remove_ptr(be.ready_set, irn);
}
+ if(selector->finish_block)
+ selector->finish_block(env->selector_env, block_env, block);
+
del_pset(be.ready_set);
del_pset(be.already_scheduled);
-
- {
- sched_info_t *inf;
- list_for_each_entry(sched_info_t, inf, &info->list, list) {
- ir_node *irn = get_sched_info_irn(inf);
- ir_debugf("node: %n, pos: %d\n", irn, inf->time_step);
- }
- }
}
projects / libfirm / blobdiff