-/**
- * 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.
*
- * Common stuff used by all ILP fomulations.
+ * 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 Common stuff used by all ILP formulations.
+ * @author Daniel Grund
+ * @date 28.02.2006
+ * @version $Id$
*/
+#include "config.h"
+
+#include "irtools.h"
+#include "irprintf.h"
+
+#include "bestatevent.h"
+#include "beirg.h"
+#include "bemodule.h"
+#include "error.h"
+
+#include "lc_opts.h"
+#include "lc_opts_enum.h"
+
+#ifdef WITH_ILP
+
+#define DUMP_ILP 1
+#define DUMP_SOL 2
+
+static int time_limit = 60;
+static int solve_net = 1;
+static int solve_log = 0;
+static unsigned dump_flags = 0;
+
+static const lc_opt_enum_mask_items_t dump_items[] = {
+ { "ilp", DUMP_ILP },
+ { "sol", DUMP_SOL },
+ { NULL, 0 }
+};
+
+static lc_opt_enum_mask_var_t dump_var = {
+ &dump_flags, dump_items
+};
+
+static const lc_opt_table_entry_t options[] = {
+ LC_OPT_ENT_INT ("limit", "time limit for solving in seconds (0 for unlimited)", &time_limit),
+ LC_OPT_ENT_BOOL ("net", "solve over the net", &solve_net),
+ LC_OPT_ENT_BOOL ("log", "show ilp solving log", &solve_log),
+ LC_OPT_ENT_ENUM_MASK("dump", "dump flags", &dump_var),
+ LC_OPT_LAST
+};
+
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_copyilp);
+void be_init_copyilp(void)
+{
+ lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
+ lc_opt_entry_t *ra_grp = lc_opt_get_grp(be_grp, "ra");
+ lc_opt_entry_t *chordal_grp = lc_opt_get_grp(ra_grp, "chordal");
+ lc_opt_entry_t *co_grp = lc_opt_get_grp(chordal_grp, "co");
+ lc_opt_entry_t *ilp_grp = lc_opt_get_grp(co_grp, "ilp");
+
+ lc_opt_add_table(ilp_grp, options);
+}
+
+#include "becopyilp_t.h"
+#include "beifg.h"
+
+/******************************************************************************
+ _____ _ _ _ _
+ / ____(_) | | | | (_)
+ | (___ _ _______ _ __ ___ __| |_ _ ___| |_ _ ___ _ __
+ \___ \| |_ / _ \ | '__/ _ \/ _` | | | |/ __| __| |/ _ \| '_ \
+ ____) | |/ / __/ | | | __/ (_| | |_| | (__| |_| | (_) | | | |
+ |_____/|_/___\___| |_| \___|\__,_|\__,_|\___|\__|_|\___/|_| |_|
+
+ *****************************************************************************/
+
+
+size_red_t *new_size_red(copy_opt_t *co)
+{
+ size_red_t *res = XMALLOC(size_red_t);
+
+ res->co = co;
+ res->all_removed = pset_new_ptr_default();
+ res->col_suff = NULL;
+ obstack_init(&res->ob);
+
+ return res;
+}
+
+/**
+ * Checks if a node is simplicial in the graph heeding the already removed nodes.
+ */
+static inline int sr_is_simplicial(size_red_t *sr, const ir_node *ifn)
+{
+ be_ifg_t *ifg = sr->co->cenv->ifg;
+ neighbours_iter_t iter;
+ ir_node **all = ALLOCAN(ir_node*, be_ifg_degree(ifg, ifn));
+ ir_node *curr;
+ int size = 0;
+ int i;
+ int o;
+
+ /* get all non-removed neighbors */
+ be_ifg_foreach_neighbour(ifg, &iter, ifn, curr)
+ if (!sr_is_removed(sr, curr))
+ all[size++] = curr;
+
+ /* check if these form a clique */
+ for (i=0; i<size; ++i)
+ for (o=i+1; o<size; ++o)
+ if (!be_ifg_connected(ifg, all[i], all[o]))
+ return 0;
+
+ /* all edges exist so this is a clique */
+ return 1;
+}
+
+void sr_remove(size_red_t *sr)
+{
+ ir_node *irn;
+ int redo = 1;
+ const be_ifg_t *ifg = sr->co->cenv->ifg;
+ nodes_iter_t iter;
+
+ while (redo) {
+ redo = 0;
+ be_ifg_foreach_node(ifg, &iter, irn) {
+ const arch_register_req_t *req = arch_get_register_req_out(irn);
+
+ if (!arch_register_req_is(req, limited) && !sr_is_removed(sr, irn) && !co_gs_is_optimizable(sr->co, irn)) {
+ if (sr_is_simplicial(sr, irn)) {
+ coloring_suffix_t *cs = OALLOC(&sr->ob, coloring_suffix_t);
+
+ cs->irn = irn;
+ cs->next = sr->col_suff;
+ sr->col_suff = cs;
+
+ pset_insert_ptr(sr->all_removed, irn);
+
+ redo = 1;
+ }
+ }
+ }
+ }
+}
+
+void sr_reinsert(size_red_t *sr)
+{
+ coloring_suffix_t *cs;
+ be_ifg_t *ifg = sr->co->cenv->ifg;
+ bitset_t *used_cols = bitset_alloca(arch_register_class_n_regs(sr->co->cls));
+ neighbours_iter_t iter;
+
+ /* color the removed nodes in right order */
+ for (cs = sr->col_suff; cs; cs = cs->next) {
+ int free_col;
+ ir_node *other, *irn;
+
+ /* get free color by inspecting all neighbors */
+ irn = cs->irn;
+ bitset_clear_all(used_cols);
+
+ be_ifg_foreach_neighbour(ifg, &iter, irn, other) {
+ if (!sr_is_removed(sr, other)) /* only inspect nodes which are in graph right now */
+ bitset_set(used_cols, get_irn_col(other));
+ }
+
+ /* now all bits not set are possible colors */
+ free_col = bitset_next_clear(used_cols, 0);
+ assert(free_col != -1 && "No free color found. This can not be.");
+ set_irn_col(sr->co, irn, free_col);
+ pset_remove_ptr(sr->all_removed, irn); /* irn is back in graph again */
+ }
+}
+
+void free_size_red(size_red_t *sr)
+{
+ del_pset(sr->all_removed);
+ obstack_free(&sr->ob, NULL);
+ free(sr);
+}
+
+/******************************************************************************
+ _____ _ _____ _ _____
+ / ____| (_) |_ _| | | __ \
+ | | __ ___ _ __ ___ _ __ _ ___ | | | | | |__) |
+ | | |_ |/ _ \ '_ \ / _ \ '__| |/ __| | | | | | ___/
+ | |__| | __/ | | | __/ | | | (__ _| |_| |____| |
+ \_____|\___|_| |_|\___|_| |_|\___| |_____|______|_|
+
+ *****************************************************************************/
+
+#include <stdio.h>
+
+ilp_env_t *new_ilp_env(copy_opt_t *co, ilp_callback build, ilp_callback apply, void *env)
+{
+ ilp_env_t *res = XMALLOC(ilp_env_t);
+
+ res->co = co;
+ res->build = build;
+ res->apply = apply;
+ res->env = env;
+ res->sr = new_size_red(co);
+
+ return res;
+}
+
+lpp_sol_state_t ilp_go(ilp_env_t *ienv)
+{
+ be_main_env_t *main_env = ienv->co->cenv->birg->main_env;
+
+ sr_remove(ienv->sr);
+
+ ienv->build(ienv);
+ lpp_set_time_limit(ienv->lp, time_limit);
+
+ if (solve_log)
+ lpp_set_log(ienv->lp, stdout);
+
+ if (solve_net)
+ lpp_solve_net(ienv->lp, main_env->options->ilp_server, main_env->options->ilp_solver);
+ else {
+#ifdef LPP_SOLVE_NET
+ fprintf(stderr, "can only solve ilp over the net\n");
+#else
+ lpp_solve_cplex(ienv->lp);
+#endif
+ }
+
+ be_stat_ev_dbl("co_ilp_objval", ienv->lp->objval);
+ be_stat_ev_dbl("co_ilp_best_bound", ienv->lp->best_bound);
+ be_stat_ev ("co_ilp_iter", ienv->lp->iterations);
+ be_stat_ev_dbl("co_ilp_sol_time", ienv->lp->sol_time);
+
+ if (dump_flags & DUMP_ILP) {
+ char buf[128];
+ FILE *f;
+
+ ir_snprintf(buf, sizeof(buf), "%F_%s-co.ilp", ienv->co->cenv->irg,
+ ienv->co->cenv->cls->name);
+ f = fopen(buf, "wt");
+ if (f == NULL) {
+ panic("Couldn't open '%s' for writing", buf);
+ }
+ lpp_dump_plain(ienv->lp, f);
+ fclose(f);
+ }
+
+ ienv->apply(ienv);
+
+ sr_reinsert(ienv->sr);
+
+ return lpp_get_sol_state(ienv->lp);
+}
+
+void free_ilp_env(ilp_env_t *ienv)
+{
+ free_size_red(ienv->sr);
+ free_lpp(ienv->lp);
+ free(ienv);
+}
+
+#else /* WITH_ILP */
+
+static inline void only_that_you_can_compile_without_WITH_ILP_defined(void)
+{
+}
-#include "becopyilp_t.h"
\ No newline at end of file
+#endif /* WITH_ILP */
projects / libfirm / blobdiff