-/**
- * Author: Daniel Grund
- * Date: 28.02.2006
- * Copyright: (c) Universitaet Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
*
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief ILP based copy minimization.
+ * @author Daniel Grund
+ * @date 28.02.2006
+ * @version $Id$
*
* ILP formalization using G=(V, E, Q):
* - 2 class of variables: coloring vars x_ic and equal color vars y_ij
*
* x_nc, y_ij \in N, w_ij \in R^+
*/
-
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif /* HAVE_CONFIG_H */
#ifdef WITH_ILP
-#include <bitset.h>
+#include "bitset.h"
+#include "raw_bitset.h"
#include "pdeq.h"
#include "irtools.h"
#include "irgwalk.h"
#include "becopyilp_t.h"
-#include "beifg_t.h"
-#include "besched_t.h"
+#include "beifg.h"
+#include "besched.h"
+#include "bemodule.h"
#define DEBUG_LVL 1
typedef struct _local_env_t {
- firm_dbg_module_t *dbg;
double time_limit;
int first_x_var, last_x_var;
+ int n_colors;
+ bitset_t *normal_colors;
pmap *nr_2_irn;
+ DEBUG_ONLY(firm_dbg_module_t *dbg;)
} local_env_t;
-static void build_coloring_cstr(ilp_env_t *ienv) {
- be_ifg_t *ifg = ienv->co->cenv->ifg;
- void *iter = be_ifg_nodes_iter_alloca(ifg);
+static void build_coloring_cstr(ilp_env_t *ienv)
+{
+ be_ifg_t *ifg = ienv->co->cenv->ifg;
+ nodes_iter_t iter;
bitset_t *colors;
ir_node *irn;
char buf[16];
colors = bitset_alloca(arch_register_class_n_regs(ienv->co->cls));
- be_ifg_foreach_node(ifg, iter, irn)
+ be_ifg_foreach_node(ifg, &iter, irn)
if (!sr_is_removed(ienv->sr, irn)) {
- int col, cst_idx;
- arch_register_req_t req;
- int curr_node_color = get_irn_col(ienv->co, irn);
- int node_nr = (int)get_irn_node_nr(irn);
+ unsigned col;
+ int cst_idx;
+ const arch_register_req_t *req;
+ int curr_node_color = get_irn_col(irn);
+ int node_nr = (int)get_irn_idx(irn);
local_env_t *lenv = ienv->env;
pmap_insert(lenv->nr_2_irn, INT_TO_PTR(node_nr), irn);
- arch_get_register_req(ienv->co->aenv, &req, irn, -1);
+ req = arch_get_register_req_out(irn);
+
+ bitset_clear_all(colors);
/* get assignable colors */
- if (arch_register_req_is(&req, limited))
- req.limited(req.limited_env, colors);
- else
- arch_put_non_ignore_regs(ienv->co->aenv, req.cls, colors);
+ if (arch_register_req_is(req, limited)) {
+ rbitset_copy_to_bitset(req->limited, colors);
+ } else {
+ bitset_copy(colors, lenv->normal_colors);
+ }
/* add the coloring constraint */
cst_idx = lpp_add_cst(ienv->lp, NULL, lpp_equal, 1.0);
bitset_foreach(colors, col) {
int var_idx = lpp_add_var(ienv->lp, name_cdd(buf, 'x', node_nr, col), lpp_binary, 0.0);
- lpp_set_start_value(ienv->lp, var_idx, (col == curr_node_color) ? 1.0 : 0.0);
+ lpp_set_start_value(ienv->lp, var_idx, (col == (unsigned) curr_node_color) ? 1.0 : 0.0);
lpp_set_factor_fast(ienv->lp, cst_idx, var_idx, 1);
lenv->last_x_var = var_idx;
}
}
-static void build_interference_cstr(ilp_env_t *ienv) {
- lpp_t *lpp = ienv->lp;
- be_ifg_t *ifg = ienv->co->cenv->ifg;
- int n_colors = arch_register_class_n_regs(ienv->co->cls);
- int i, col;
-
- void *iter = be_ifg_cliques_iter_alloca(ifg);
- ir_node **clique = alloca(sizeof(*clique) * n_colors);
- int size;
+static void build_interference_cstr(ilp_env_t *ienv)
+{
+ lpp_t *lpp = ienv->lp;
+ local_env_t *lenv = ienv->env;
+ be_ifg_t *ifg = ienv->co->cenv->ifg;
+ int n_colors = lenv->n_colors;
+ cliques_iter_t iter;
+ ir_node **clique = ALLOCAN(ir_node*, n_colors);
+ int size;
+ int col;
+ int i;
char buf[16];
/* for each maximal clique */
- be_ifg_foreach_clique(ifg, iter, clique, &size) {
+ be_ifg_foreach_clique(ifg, &iter, clique, &size) {
int realsize = 0;
for (i=0; i<size; ++i)
ir_node *irn = clique[i];
if (!sr_is_removed(ienv->sr, irn)) {
- int var_idx = lpp_get_var_idx(lpp, name_cdd(buf, 'x', (int)get_irn_node_nr(irn), col));
+ int var_idx = lpp_get_var_idx(lpp, name_cdd(buf, 'x', (int)get_irn_idx(irn), col));
lpp_set_factor_fast(lpp, cst_idx, var_idx, 1);
}
}
* by walking over all affinity edges. Graph structure
* does not provide this walker, yet.
*/
-static void build_affinity_cstr(ilp_env_t *ienv) {
+static void build_affinity_cstr(ilp_env_t *ienv)
+{
+ local_env_t *lenv = ienv->env;
+ int n_colors = lenv->n_colors;
unit_t *curr;
- int n_colors = arch_register_class_n_regs(ienv->co->cls);
/* for all optimization units */
list_for_each_entry(unit_t, curr, &ienv->co->units, units) {
int root_col, arg_col;
root = curr->nodes[0];
- root_nr = (int) get_irn_node_nr(root);
- root_col = get_irn_col(ienv->co, root);
+ root_nr = (int) get_irn_idx(root);
+ root_col = get_irn_col(root);
for (i = 1; i < curr->node_count; ++i) {
arg = curr->nodes[i];
- arg_nr = (int) get_irn_node_nr(arg);
- arg_col = get_irn_col(ienv->co, arg);
+ arg_nr = (int) get_irn_idx(arg);
+ arg_col = get_irn_col(arg);
/* add a new affinity variable */
y_idx = lpp_add_var(ienv->lp, name_cdd_sorted(buf, 'y', root_nr, arg_nr), lpp_binary, curr->costs[i]);
ir_node *n1, *n2;
} edge_t;
-static int compare_edge_t(const void *k1, const void *k2, size_t size) {
+static int compare_edge_t(const void *k1, const void *k2, size_t size)
+{
const edge_t *e1 = k1;
const edge_t *e2 = k2;
+ (void) size;
return ! (e1->n1 == e2->n1 && e1->n2 == e2->n2);
}
-#define HASH_EDGE(e) (HASH_PTR((e)->n1) ^ HASH_PTR((e)->n2))
+#define HASH_EDGE(e) (hash_irn((e)->n1) ^ hash_irn((e)->n2))
-static INLINE edge_t *add_edge(set *edges, ir_node *n1, ir_node *n2, int *counter) {
+static inline edge_t *add_edge(set *edges, ir_node *n1, ir_node *n2, int *counter)
+{
edge_t new_edge;
if (PTR_TO_INT(n1) < PTR_TO_INT(n2)) {
return set_insert(edges, &new_edge, sizeof(new_edge), HASH_EDGE(&new_edge));
}
-static INLINE edge_t *find_edge(set *edges, ir_node *n1, ir_node *n2) {
+static inline edge_t *find_edge(set *edges, ir_node *n1, ir_node *n2)
+{
edge_t new_edge;
if (PTR_TO_INT(n1) < PTR_TO_INT(n2)) {
return set_find(edges, &new_edge, sizeof(new_edge), HASH_EDGE(&new_edge));
}
-static INLINE void remove_edge(set *edges, ir_node *n1, ir_node *n2, int *counter) {
+static inline void remove_edge(set *edges, ir_node *n1, ir_node *n2, int *counter)
+{
edge_t new_edge, *e;
if (PTR_TO_INT(n1) < PTR_TO_INT(n2)) {
}
}
-#define pset_foreach(pset, irn) for(irn=pset_first(pset); irn; irn=pset_next(pset))
+#define pset_foreach(pset, irn) for (irn=pset_first(pset); irn; irn=pset_next(pset))
/**
* Search for an interference clique and an external node
* with affinity edges to all nodes of the clique.
* At most 1 node of the clique can be colored equally with the external node.
*/
-static void build_clique_star_cstr(ilp_env_t *ienv) {
+static void build_clique_star_cstr(ilp_env_t *ienv)
+{
affinity_node_t *aff;
/* for each node with affinity edges */
co_gs_foreach_aff_node(ienv->co, aff) {
struct obstack ob;
neighb_t *nbr;
- ir_node *center = aff->irn;
+ const ir_node *center = aff->irn;
ir_node **nodes;
set *edges;
int i, o, n_nodes, n_edges;
+ if (arch_irn_is_ignore(aff->irn))
+ continue;
+
obstack_init(&ob);
edges = new_set(compare_edge_t, 8);
/* get all affinity neighbours */
n_nodes = 0;
co_gs_foreach_neighb(aff, nbr) {
- obstack_ptr_grow(&ob, nbr->irn);
- ++n_nodes;
+ if (!arch_irn_is_ignore(nbr->irn)) {
+ obstack_ptr_grow(&ob, nbr->irn);
+ ++n_nodes;
+ }
}
nodes = obstack_finish(&ob);
for (e=set_first(edges); !e->n1; e=set_next(edges))
/*nothing*/ ;
+ /* we could be stepped out of the loop before the set iterated to the end */
+ set_break(edges);
+
pset_insert_ptr(clique, e->n1);
pset_insert_ptr(clique, e->n2);
remove_edge(edges, e->n1, e->n2, &n_edges);
char buf[16];
cst_idx = lpp_add_cst(ienv->lp, NULL, lpp_greater, pset_count(clique)-1);
- center_nr = get_irn_node_nr(center);
+ center_nr = get_irn_idx(center);
pset_foreach(clique, member) {
- member_nr = get_irn_node_nr(member);
+ member_nr = get_irn_idx(member);
var_idx = lpp_get_var_idx(ienv->lp, name_cdd_sorted(buf, 'y', center_nr, member_nr));
lpp_set_factor_fast(ienv->lp, cst_idx, var_idx, 1.0);
}
}
-static void extend_path(ilp_env_t *ienv, pdeq *path, ir_node *irn) {
+static void extend_path(ilp_env_t *ienv, pdeq *path, const ir_node *irn)
+{
be_ifg_t *ifg = ienv->co->cenv->ifg;
int i, len;
ir_node **curr_path;
if (pdeq_contains(path, irn))
return;
+ if (arch_irn_is_ignore(irn))
+ return;
+
/* insert the new irn */
pdeq_putr(path, irn);
/* check for forbidden interferences */
- len = pdeq_len(path);
- curr_path = alloca(len * sizeof(*curr_path));
+ len = pdeq_len(path);
+ curr_path = ALLOCAN(ir_node*, len);
pdeq_copyl(path, (const void **)curr_path);
for (i=1; i<len; ++i)
int cst_idx = lpp_add_cst(ienv->lp, NULL, lpp_greater, 1.0);
for (i=1; i<len; ++i) {
char buf[16];
- int nr_1 = get_irn_node_nr(curr_path[i-1]);
- int nr_2 = get_irn_node_nr(curr_path[i]);
+ int nr_1 = get_irn_idx(curr_path[i-1]);
+ int nr_2 = get_irn_idx(curr_path[i]);
int var_idx = lpp_get_var_idx(ienv->lp, name_cdd_sorted(buf, 'y', nr_1, nr_2));
lpp_set_factor_fast(ienv->lp, cst_idx, var_idx, 1.0);
}
* edges in between.
* Then at least one of these affinity edges must break.
*/
-static void build_path_cstr(ilp_env_t *ienv) {
+static void build_path_cstr(ilp_env_t *ienv)
+{
affinity_node_t *aff_info;
/* for each node with affinity edges */
}
}
-static void ilp2_build(ilp_env_t *ienv) {
+static void ilp2_build(ilp_env_t *ienv)
+{
local_env_t *lenv = ienv->env;
int lower_bound;
lpp_set_time_limit(ienv->lp, lenv->time_limit);
}
-static void ilp2_apply(ilp_env_t *ienv) {
+static void ilp2_apply(ilp_env_t *ienv)
+{
local_env_t *lenv = ienv->env;
- double *sol;
- lpp_sol_state_t state;
- int i, count;
+ int i;
/* first check if there was sth. to optimize */
if (lenv->first_x_var >= 0) {
+ int count = lenv->last_x_var - lenv->first_x_var + 1;
+ double *sol = XMALLOCN(double, count);
+ lpp_sol_state_t state = lpp_get_solution(ienv->lp, sol, lenv->first_x_var, lenv->last_x_var);
- count = lenv->last_x_var - lenv->first_x_var + 1;
- sol = xmalloc(count * sizeof(sol[0]));
- state = lpp_get_solution(ienv->lp, sol, lenv->first_x_var, lenv->last_x_var);
if (state != lpp_optimal) {
printf("WARNING %s: Solution state is not 'optimal': %d\n", ienv->co->name, state);
assert(state >= lpp_feasible && "The solution should at least be feasible!");
assert(0 && "This should be a x-var");
}
}
+
+ xfree(sol);
}
#ifdef COPYOPT_STAT
#endif
}
-int co_solve_ilp2(copy_opt_t *co, double time_limit) {
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_copyilp2);
+void be_init_copyilp2(void)
+{
+ static co_algo_info copyheur = {
+ co_solve_ilp2, 1
+ };
+
+ be_register_copyopt("ilp", ©heur);
+}
+
+int co_solve_ilp2(copy_opt_t *co)
+{
lpp_sol_state_t sol_state;
ilp_env_t *ienv;
local_env_t my;
ASSERT_OU_AVAIL(co); //See build_clique_st
ASSERT_GS_AVAIL(co);
- my.time_limit = time_limit;
+ my.time_limit = 0;
my.first_x_var = -1;
my.last_x_var = -1;
my.nr_2_irn = pmap_create();
- FIRM_DBG_REGISTER(my.dbg, "ir.be.coilp2");
- firm_dbg_set_mask(my.dbg, DEBUG_LVL);
+ FIRM_DBG_REGISTER(my.dbg, "firm.be.coilp2");
+
+ my.normal_colors = bitset_alloca(arch_register_class_n_regs(co->cls));
+ bitset_clear_all(my.normal_colors);
+ arch_put_non_ignore_regs(co->cls, my.normal_colors);
+ my.n_colors = bitset_popcount(my.normal_colors);
ienv = new_ilp_env(co, ilp2_build, ilp2_apply, &my);
#else /* WITH_ILP */
-static void only_that_you_can_compile_without_WITH_ILP_defined(void) {
+static inline void only_that_you_can_compile_without_WITH_ILP_defined(void)
+{
}
#endif /* WITH_ILP */
projects / libfirm / blobdiff