#include <malloc.h>
#endif
+#include "xmalloc.h"
+#include "debug.h"
+#include "pmap.h"
+#include "irgraph.h"
+#include "irgwalk.h"
#include "irprog.h"
#include "irloop_t.h"
+#include "iredges_t.h"
+#include "phiclass.h"
-#include "xmalloc.h"
+#include "bearch.h"
#include "beutil.h"
-#include "bechordal_t.h"
-#include "becopyopt.h"
+#include "beifg_t.h"
+#include "becopyopt_t.h"
#include "becopystat.h"
+/******************************************************************************
+ _____ _
+ / ____| | |
+ | | __ ___ _ __ ___ _ __ __ _| |
+ | | |_ |/ _ \ '_ \ / _ \ '__/ _` | |
+ | |__| | __/ | | | __/ | | (_| | |
+ \_____|\___|_| |_|\___|_| \__,_|_|
+
+ ******************************************************************************/
+
static firm_dbg_module_t *dbg = NULL;
-#define is_curr_reg_class(irn) \
- (arch_get_irn_reg_class(get_arch_env(co), \
- irn, -1) == co->chordal_env->cls)
+void be_copy_opt_init(void) {
+}
+
+copy_opt_t *new_copy_opt(be_chordal_env_t *chordal_env, int (*get_costs)(ir_node*, ir_node*, int)) {
+ const char *s1, *s2, *s3;
+ int len;
+ copy_opt_t *co;
+
+ dbg = firm_dbg_register("ir.be.copyopt");
+
+ co = xcalloc(1, sizeof(*co));
+ co->cenv = chordal_env;
+ co->aenv = chordal_env->birg->main_env->arch_env;
+ co->irg = chordal_env->irg;
+ co->cls = chordal_env->cls;
+ co->get_costs = get_costs;
+
+ s1 = get_irp_prog_name();
+ s2 = get_entity_name(get_irg_entity(co->irg));
+ s3 = chordal_env->cls->name;
+ len = strlen(s1) + strlen(s2) + strlen(s3) + 5;
+ co->name = xmalloc(len);
+ snprintf(co->name, len, "%s__%s__%s", s1, s2, s3);
+
+ return co;
+}
+
+void free_copy_opt(copy_opt_t *co) {
+ xfree(co->name);
+}
+
+int co_is_optimizable_root(const copy_opt_t *co, ir_node *irn) {
+ arch_register_req_t req;
+
+ if (arch_irn_is_ignore(co->aenv, irn))
+ return 0;
+
+ if (is_Reg_Phi(irn) || is_Perm_Proj(co->aenv, irn) || is_2addr_code(co->aenv, irn, &req))
+ return 1;
+
+ return 0;
+}
+
+int co_is_optimizable_arg(const copy_opt_t *co, ir_node *irn) {
+ const ir_edge_t *edge;
+
+ if (arch_irn_is_ignore(co->aenv, irn))
+ return 0;
-#define MIN(a,b) ((a<b)?(a):(b))
-#define MAX(a,b) ((a<b)?(b):(a))
+ foreach_out_edge(irn, edge) {
+ ir_node *n = edge->src;
+
+ if (!nodes_interfere(co->cenv, irn, n) || irn == n) {
+ arch_register_req_t req;
+ arch_get_register_req(co->aenv, &req, n, -1);
+
+ if(is_Reg_Phi(n) ||
+ is_Perm(co->aenv, n) ||
+ (arch_register_req_is(&req, should_be_same) && req.other_same == irn)
+ )
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int co_get_costs_loop_depth(ir_node *root, ir_node* arg, int pos) {
+ int cost = 0;
+ ir_loop *loop;
+ ir_node *root_block = get_nodes_block(root);
+
+ if (is_Phi(root)) {
+ /* for phis the copies are placed in the corresponding pred-block */
+ loop = get_irn_loop(get_Block_cfgpred_block(root_block, pos));
+ } else {
+ /* a perm places the copy in the same block as it resides */
+ loop = get_irn_loop(root_block);
+ }
+ if (loop) {
+ int d = get_loop_depth(loop);
+ cost = d*d;
+ }
+ return cost+1;
+}
+int co_get_costs_all_one(ir_node *root, ir_node* arg, int pos) {
+ return 1;
+}
+
+/******************************************************************************
+ ____ _ _ _ _ _ _____ _
+ / __ \ | | | | | | (_) | / ____| |
+ | | | |_ __ | |_| | | |_ __ _| |_ ___ | (___ | |_ ___ _ __ __ _ __ _ ___
+ | | | | '_ \| __| | | | '_ \| | __/ __| \___ \| __/ _ \| '__/ _` |/ _` |/ _ \
+ | |__| | |_) | |_| |__| | | | | | |_\__ \ ____) | || (_) | | | (_| | (_| | __/
+ \____/| .__/ \__|\____/|_| |_|_|\__|___/ |_____/ \__\___/|_| \__,_|\__, |\___|
+ | | __/ |
+ |_| |___/
+ ******************************************************************************/
/**
* Determines a maximum weighted independent set with respect to
* the interference and conflict edges of all nodes in a qnode.
*/
static int ou_max_ind_set_costs(unit_t *ou) {
- be_chordal_env_t *chordal_env = ou->co->chordal_env;
+ be_chordal_env_t *chordal_env = ou->co->cenv;
ir_node **safe, **unsafe;
int i, o, safe_count, safe_costs, unsafe_count, *unsafe_costs;
bitset_t *curr;
unit_t *unit;
arch_register_req_t req;
- if (!is_curr_reg_class(irn))
+ if (!is_curr_reg_class(co, irn))
return;
- if (!is_optimizable(get_arch_env(co), irn, &req))
+ if (!co_is_optimizable_root(co, irn))
return;
/* Init a new unit */
int o, arg_pos;
ir_node *arg = get_irn_n(irn, i);
- assert(is_curr_reg_class(arg) && "Argument not in same register class.");
+ assert(is_curr_reg_class(co, arg) && "Argument not in same register class.");
if (arg == irn)
continue;
- if (nodes_interfere(co->chordal_env, irn, arg)) {
+ if (nodes_interfere(co->cenv, irn, arg)) {
unit->inevitable_costs += co->get_costs(irn, arg, i);
continue;
}
} else
/* Proj of a perm with corresponding arg */
- if (is_Perm_Proj(get_arch_env(co), irn)) {
- assert(!nodes_interfere(co->chordal_env, irn, get_Copy_src(irn)));
+ if (is_Perm_Proj(co->aenv, irn)) {
+ assert(!nodes_interfere(co->cenv, irn, get_Perm_src(irn)));
unit->nodes = xmalloc(2 * sizeof(*unit->nodes));
unit->costs = xmalloc(2 * sizeof(*unit->costs));
unit->node_count = 2;
unit->nodes[0] = irn;
- unit->nodes[1] = get_Copy_src(irn);
+ unit->nodes[1] = get_Perm_src(irn);
unit->costs[1] = co->get_costs(irn, unit->nodes[1], -1);
} else
/* Src == Tgt of a 2-addr-code instruction */
- if (is_2addr_code(get_arch_env(co), irn, &req)) {
- int pos = req.data.pos;
- ir_node *other = get_irn_n(irn, pos);
- if (!nodes_interfere(co->chordal_env, irn, other)) {
+ if (is_2addr_code(co->aenv, irn, &req)) {
+ ir_node *other = req.other_same;
+ if (!nodes_interfere(co->cenv, irn, other)) {
unit->nodes = xmalloc(2 * sizeof(*unit->nodes));
unit->costs = xmalloc(2 * sizeof(*unit->costs));
unit->node_count = 2;
unit->nodes[0] = irn;
unit->nodes[1] = other;
- unit->costs[1] = co->get_costs(irn, other, pos);
+ unit->costs[1] = co->get_costs(irn, other, -120480);
}
} else
assert(0 && "This is not an optimizable node!");
}
}
-copy_opt_t *new_copy_opt(be_chordal_env_t *chordal_env, int (*get_costs)(ir_node*, ir_node*, int)) {
- const char *s1, *s2, *s3;
- int len;
- copy_opt_t *co;
-
- dbg = firm_dbg_register("ir.be.copyopt");
-
- co = xcalloc(1, sizeof(*co));
- co->chordal_env = chordal_env;
- co->get_costs = get_costs;
-
- s1 = get_irp_prog_name();
- s2 = get_entity_name(get_irg_entity(get_irg(co)));
- s3 = chordal_env->cls->name;
- len = strlen(s1) + strlen(s2) + strlen(s3) + 5;
- co->name = xmalloc(len);
- snprintf(co->name, len, "%s__%s__%s", s1, s2, s3);
-
+void co_build_ou_structure(copy_opt_t *co) {
DBG((dbg, LEVEL_1, "\tCollecting optimization units\n"));
INIT_LIST_HEAD(&co->units);
- irg_walk_graph(get_irg(co), co_collect_units, NULL, co);
- return co;
+ irg_walk_graph(co->irg, co_collect_units, NULL, co);
}
-void free_copy_opt(copy_opt_t *co) {
+void co_free_ou_structure(copy_opt_t *co) {
unit_t *curr, *tmp;
- xfree(co->name);
list_for_each_entry_safe(unit_t, curr, tmp, &co->units, units) {
xfree(curr->nodes);
xfree(curr->costs);
}
}
-int is_optimizable_arg(const copy_opt_t *co, ir_node *irn) {
- arch_env_t *aenv = co->chordal_env->main_env->arch_env;
- const ir_edge_t *edge;
-
- foreach_out_edge(irn, edge) {
- ir_node *n = edge->src;
- arch_register_req_t req;
-
- arch_get_register_req(aenv, &req, n, -1);
-
- if( ( (req.type == arch_register_req_type_should_be_same && get_irn_n(n, req.data.pos) == irn) ||
- is_Reg_Phi(n) ||
- is_Perm(get_arch_env(co), n)
- ) && (irn == n || !nodes_interfere(co->chordal_env, irn, n)))
- return 1;
- }
-
- return 0;
-}
-
-int get_costs_loop_depth(ir_node *root, ir_node* arg, int pos) {
- int cost = 0;
- ir_loop *loop;
- ir_node *root_block = get_nodes_block(root);
-
- if (is_Phi(root)) {
- /* for phis the copies are placed in the corresponding pred-block */
- loop = get_irn_loop(get_Block_cfgpred_block(root_block, pos));
- } else {
- /* a perm places the copy in the same block as it resides */
- loop = get_irn_loop(root_block);
- }
- if (loop) {
- int d = get_loop_depth(loop);
- cost = d*d;
- }
- return cost+1;
-}
-
-int get_costs_all_one(ir_node *root, ir_node* arg, int pos) {
- return 1;
-}
+/* co_solve_heuristic() is implemented in becopyheur.c */
int co_get_max_copy_costs(const copy_opt_t *co) {
int i, res = 0;
res += curr->inevitable_costs + curr->min_nodes_costs;
return res;
}
+
+/******************************************************************************
+ _____ _ _____ _
+ / ____| | | / ____| |
+ | | __ _ __ __ _ _ __ | |__ | (___ | |_ ___ _ __ __ _ __ _ ___
+ | | |_ | '__/ _` | '_ \| '_ \ \___ \| __/ _ \| '__/ _` |/ _` |/ _ \
+ | |__| | | | (_| | |_) | | | | ____) | || (_) | | | (_| | (_| | __/
+ \_____|_| \__,_| .__/|_| |_| |_____/ \__\___/|_| \__,_|\__, |\___|
+ | | __/ |
+ |_| |___/
+ ******************************************************************************/
+
+static int compare_node_t(const void *k1, const void *k2, size_t size) {
+ const node_t *n1 = k1;
+ const node_t *n2 = k2;
+
+ return (n1->irn != n2->irn);
+}
+
+static void add_edge(copy_opt_t *co, ir_node *n1, ir_node *n2, int costs) {
+ node_t new_node, *node;
+ neighb_t new_nbr, *nbr;
+ int allocnew;
+
+ new_node.irn = n1;
+ new_node.count = 0;
+ new_node.neighbours = NULL;
+ node = set_insert(co->nodes, new_node.irn, sizeof(new_node), HASH_PTR(new_node.irn));
+
+ allocnew = 1;
+ for (nbr = node->neighbours; nbr; nbr = nbr->next)
+ if (nbr->irn == n2) {
+ allocnew = 0;
+ break;
+ }
+
+ /* if we did not find n2 in n1's neighbourhood insert it */
+ if (allocnew) {
+ obstack_grow(&co->obst, &new_nbr, sizeof(new_nbr));
+ nbr = obstack_finish(&co->obst);
+ nbr->irn = n2;
+ nbr->costs = 0;
+ nbr->next = node->neighbours;
+ node->neighbours = nbr;
+ node->count++;
+ }
+
+ /* now nbr points to n1's neighbour-entry of n2 */
+ nbr->costs += costs;
+}
+
+static INLINE void add_edges(copy_opt_t *co, ir_node *n1, ir_node *n2, int costs) {
+ if (! be_ifg_connected(co->cenv->ifg, n1, n2)) {
+ add_edge(co, n1, n2, costs);
+ add_edge(co, n2, n1, costs);
+ }
+}
+
+static void build_graph_walker(ir_node *irn, void *env) {
+ copy_opt_t *co = env;
+ int pos, max;
+ arch_register_req_t req;
+
+ if (!is_curr_reg_class(co, irn) || arch_irn_is_ignore(co->aenv, irn))
+ return;
+
+ /* Phis */
+ if (is_Reg_Phi(irn))
+ for (pos=0, max=get_irn_arity(irn); pos<max; ++pos) {
+ ir_node *arg = get_irn_n(irn, pos);
+ add_edges(co, irn, arg, co->get_costs(irn, arg, pos));
+ }
+
+ /* Perms */
+ else if (is_Perm_Proj(co->aenv, irn)) {
+ ir_node *arg = get_Perm_src(irn);
+ add_edges(co, irn, arg, co->get_costs(irn, arg, 0));
+ }
+
+ /* 2-address code */
+ else if (is_2addr_code(co->aenv, irn, &req))
+ add_edges(co, irn, req.other_same, co->get_costs(irn, req.other_same, 0));
+}
+
+void co_build_graph_structure(copy_opt_t *co) {
+ obstack_init(&co->obst);
+ co->nodes = new_set(compare_node_t, 32);
+
+ irg_walk_graph(co->irg, build_graph_walker, NULL, co);
+}
+
+void co_free_graph_structure(copy_opt_t *co) {
+ del_set(co->nodes);
+ obstack_free(&co->obst, NULL);
+}
+
+/* co_solve_ilp1() co_solve_ilp2() are implemented in becopyilpX.c */
+
+int co_gs_is_optimizable(copy_opt_t *co, ir_node *irn) {
+ node_t new_node, *n;
+
+ new_node.irn = irn;
+ n = set_find(co->nodes, new_node.irn, sizeof(new_node), HASH_PTR(new_node.irn));
+ if (n) {
+ return (n->count > 0);
+ } else
+ return 0;
+}
projects / libfirm / blobdiff