return NULL;
}
+static int get_loop_weight(ir_node *irn) {
+ int cost = 0;
+ ir_loop *loop = get_irn_loop(get_nodes_block(irn));
+
+ if (loop) {
+ int d = get_loop_depth(loop);
+ cost = d*d;
+ }
+ return cost+1;
+}
+
+#define get_const_weight(irn) (1)
+
+#define get_spill_weight(irn) get_loop_weight(irn)
+#define get_reload_weight(irn) get_loop_weight(irn)
+#define get_affinity_weight(irn) get_loop_weight(irn)
+
/******************************************************************************
_____ _ _____ _
/ ____| | | / ____| (_)
static INLINE unsigned int get_spill_costs(be_raext_env_t *raenv, var_info_t *vi) {
ir_node *irn;
- int n_spills=0, n_reloads=0;
+ int c_spills=0, c_reloads=0;
pset_foreach(vi->values, irn) {
if (arch_irn_is_ignore(raenv->aenv, irn)) {
const ir_edge_t *edge;
foreach_out_edge(irn, edge)
if (!is_Phi(edge->src))
- n_reloads++;
+ c_reloads += get_reload_weight(edge->src);
} else {
/* number of spills is the number of non-phi values for this var */
- n_spills++;
+ c_spills += get_spill_weight(irn);
}
}
- return n_spills + n_reloads;
+ return c_spills + c_reloads;
}
static void dump_nodes(be_raext_env_t *raenv) {
fprintf(f, "}\n");
}
-
-static int get_weight(ir_node *irn) {
- int cost = 0;
- ir_loop *loop = get_irn_loop(get_nodes_block(irn));
-
- if (loop) {
- int d = get_loop_depth(loop);
- cost = d*d;
- }
- return cost+1;
-}
-
static void dump_affinities_walker(ir_node *irn, void *env) {
be_raext_env_t *raenv = env;
arch_register_req_t req;
if (! arch_irn_is_ignore(raenv->aenv, other)) {
vi2 = get_var_info(other);
- fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_weight(irn));
+ fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_affinity_weight(irn));
}
}
if (arch_register_req_is(&req, should_be_same) && arch_irn_is_ignore(raenv->aenv, req.other_same)) {
vi2 = get_var_info(req.other_same);
- fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_weight(irn));
+ fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_affinity_weight(irn));
}
}
}
static INLINE void var_add_spills_and_reloads(be_raext_env_t *raenv, int var_nr) {
var_info_t *vi = var_find(raenv->vars, var_nr);
ir_node *spill=NULL, *ctx, *irn;
+ ir_mode *mode;
const ir_edge_t *edge, *ne;
pset *spills = pset_new_ptr(4); /* the spills of this variable */
pset *reloads = pset_new_ptr(4); /* the reloads of this variable */
assert(spill && "There must be at least one non-phi-node");
+ mode = get_irn_mode(get_irn_n(spill, 0));
+
/* insert reloads and wire them arbitrary*/
pset_foreach(vi->values, irn)
foreach_out_edge_safe(irn, edge, ne) {
/* all real uses must be reloaded */
DBG((raenv->dbg, LEVEL_2, " reloading before %+F\n", src));
- reload = be_reload(raenv->aenv, raenv->cls, edge->src, edge->pos, get_irn_mode(get_irn_n(spill, 0)), spill);
+ reload = be_reload(raenv->aenv, raenv->cls, edge->src, mode, spill);
+ set_irn_n(edge->src, edge->pos, reload);
/* remember the reload */
pset_insert_ptr(reloads, reload);
return is_allocation;
}
+static void check_allocation(be_raext_env_t *raenv) {
+ int i, o;
+
+ for (i=0; i<raenv->n_cls_vars; ++i) {
+ var_info_t *vi1 = raenv->cls_vars[i];
+
+ if (vi1->var_nr == SET_REMOVED)
+ continue;
+
+ for (o=0; o<i; ++o) {
+ var_info_t *vi2 = raenv->cls_vars[o];
+ ir_node *irn1, *irn2;
+
+ if (vi2->var_nr == SET_REMOVED)
+ continue;
+
+ pset_foreach(vi1->values, irn1)
+ pset_foreach(vi2->values, irn2)
+ if (values_interfere(irn1, irn2)) {
+ dump_ir_block_graph_sched(raenv->irg, "ERROR");
+ ir_fprintf(stdout, "SSA values %+F and %+F interfere. They belong to varible %d and %d respectively.\n", irn1, irn2, vi1->var_nr, vi2->var_nr);
+ assert(0 && "ERROR graph dumped");
+ }
+ }
+ }
+}
+
/******************************************************************************
__ __ _
| \/ | (_)
round++;
} while (!done);
+ check_allocation(&raenv);
+
free(raenv.cls_vars);
}