+/* $Id$ */
+
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "irnode_t.h"
#include "irgraph_t.h"
#include "iredges_t.h"
+#include "ircons.h"
+#include "irextbb.h"
#include "debug.h"
#include "bearch.h"
{
ir_node *irn;
sched_info_t *inf;
- sched_timestep_t step = 0;
+ sched_timestep_t step = SCHED_INITIAL_GRANULARITY;
sched_foreach(block, irn) {
inf = get_irn_sched_info(irn);
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 arch_irn_class_is(ae, irn, branch);
}
int sched_skip_phi_predicator(const ir_node *irn, void *data) {
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;
+static void add_block(anchor *list, ir_node *block) {
+ if(list->start == NULL) {
+ list->start = block;
+ list->end = block;
+ } else {
+ set_irn_link(list->end, block);
+ list->end = block;
+ }
- for (i = 0, n = get_extbb_n_blocks(blk); i < n; ++i) {
- ir_node *block = get_extbb_block(blk, i);
+ list->n_blks++;
+}
- set_irn_link(block, NULL);
- if (list->start)
- set_irn_link(list->end, block);
- else
- list->start = block;
+static void create_block_list(ir_node *leader_block, anchor *list) {
+ int i;
+ ir_node *block = NULL;
+ const ir_edge_t *edge;
- list->end = block;
- ++list->n_blks;
+ ir_extblk *extbb = get_Block_extbb(leader_block);
+ if(extbb_visited(extbb))
+ return;
+ mark_extbb_visited(extbb);
+
+ for(i = 0; i < get_extbb_n_blocks(extbb); ++i) {
+ block = get_extbb_block(extbb, i);
+ add_block(list, block);
+ }
+
+ assert(block != NULL);
+
+ // pick successor extbbs
+ foreach_block_succ(block, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+
+ create_block_list(succ, list);
+ }
+
+ for(i = 0; i < get_extbb_n_blocks(extbb) - 1; ++i) {
+ block = get_extbb_block(extbb, i);
+ foreach_block_succ(block, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+
+ create_block_list(succ, list);
+ }
}
}
+void compute_extbb_execfreqs(ir_graph *irg, exec_freq_t *execfreqs);
+
/*
* 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)
+ir_node **sched_create_block_schedule(ir_graph *irg, exec_freq_t *execfreqs)
{
anchor list;
ir_node **blk_list, *b, *n;
unsigned i;
/* schedule extended basic blocks */
- compute_extbb(irg);
+ compute_extbb_execfreqs(irg, execfreqs);
+ //compute_extbb(irg);
list.start = NULL;
list.end = NULL;
list.n_blks = 0;
- irg_extblock_walk_graph(irg, NULL, create_block_list, &list);
+ inc_irg_block_visited(irg);
+ create_block_list(get_irg_start_block(irg), &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;
}
+
+typedef struct remove_dead_nodes_env_t_ {
+ ir_graph *irg;
+ bitset_t *reachable;
+} remove_dead_nodes_env_t;
+
+static void mark_dead_nodes_walker(ir_node *node, void *data)
+{
+ remove_dead_nodes_env_t *env = (remove_dead_nodes_env_t*) data;
+ bitset_set(env->reachable, get_irn_idx(node));
+}
+
+static void remove_dead_nodes_walker(ir_node *block, void *data)
+{
+ remove_dead_nodes_env_t *env = (remove_dead_nodes_env_t*) data;
+ ir_node *node, *next;
+
+ for(node = sched_first(block); !sched_is_end(node); node = next) {
+ int i, arity;
+
+ // get next node now, as after calling sched_remove it will be invalid
+ next = sched_next(node);
+
+ if(bitset_is_set(env->reachable, get_irn_idx(node)))
+ continue;
+
+ arity = get_irn_arity(node);
+ for(i = 0; i < arity; ++i)
+ set_irn_n(node, i, new_r_Bad(env->irg));
+
+ sched_remove(node);
+ }
+}
+
+void be_remove_dead_nodes_from_schedule(ir_graph *irg)
+{
+ remove_dead_nodes_env_t env;
+ env.irg = irg;
+ env.reachable = bitset_alloca(get_irg_last_idx(irg));
+
+ // mark all reachable nodes
+ irg_walk_graph(irg, mark_dead_nodes_walker, NULL, &env);
+
+ // walk schedule and remove non-marked nodes
+ irg_block_walk_graph(irg, remove_dead_nodes_walker, NULL, &env);
+}