-/**
- * @file beifg.c
- * @date 18.11.2005
- * @author Sebastian Hack
+/*
+ * 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.
*
- * Copyright (C) 2005 Universitaet Karlsruhe
- * Released under the GPL
+ * 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.
*/
-#include <stdlib.h>
-
-#ifdef HAVE_CONFIG_H
+/**
+ * @file
+ * @brief Interface for interference graphs.
+ * @author Sebastian Hack
+ * @date 18.11.2005
+ */
#include "config.h"
-#endif
-
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
+#include <stdlib.h>
-#ifdef WITH_LIBCORE
-#include <libcore/lc_opts.h>
-#include <libcore/lc_opts_enum.h>
-#include <libcore/lc_timing.h>
-#endif /* WITH_LIBCORE */
+#include "lc_opts.h"
+#include "lc_opts_enum.h"
+#include "timing.h"
#include "bitset.h"
-
#include "irgwalk.h"
#include "irnode_t.h"
#include "irprintf.h"
#include "irtools.h"
-#include "beifg_t.h"
-#include "beifg_impl.h"
-#include "irphase.h"
-#include "irphase_t.h"
-#include "bechordal.h"
+#include "beifg.h"
+#include "error.h"
+#include "xmalloc.h"
#include "becopystat.h"
#include "becopyopt.h"
+#include "beirg.h"
+#include "bemodule.h"
+#include "beintlive_t.h"
-/** Defines values for the ifg performance test */
-#define BE_CH_PERFORMANCETEST_MIN_NODES (50)
-#define BE_CH_PERFORMANCETEST_COUNT (10)
-
-typedef struct _coloring_t coloring_t;
-
-struct _coloring_t {
- phase_t ph;
- const arch_env_t *arch_env;
- ir_graph *irg;
-};
-
-size_t (be_ifg_nodes_iter_size)(const void *self)
+void be_ifg_free(be_ifg_t *self)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->nodes_iter_size;
+ free(self);
}
-size_t (be_ifg_neighbours_iter_size)(const void *self)
+int be_ifg_connected(const be_ifg_t *ifg, const ir_node *a, const ir_node *b)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->neighbours_iter_size;
+ be_lv_t *lv = be_get_irg_liveness(ifg->env->irg);
+ return be_values_interfere(lv, a, b);
}
-size_t (be_ifg_cliques_iter_size)(const void *self)
+static void nodes_walker(ir_node *bl, void *data)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->cliques_iter_size;
-}
+ nodes_iter_t *it = (nodes_iter_t*)data;
+ struct list_head *head = get_block_border_head(it->env, bl);
-static void *regs_irn_data_init(phase_t *ph, ir_node *irn, void *data)
-{
- coloring_t *coloring = (coloring_t *) ph;
- return (void *) arch_get_irn_register(coloring->arch_env, irn);
+ foreach_border_head(head, b) {
+ if (b->is_def && b->is_real) {
+ obstack_ptr_grow(&it->obst, b->irn);
+ it->n++;
+ }
+ }
}
-coloring_t *coloring_init(coloring_t *c, ir_graph *irg, const arch_env_t *aenv)
+static void find_nodes(const be_ifg_t *ifg, nodes_iter_t *iter)
{
- phase_init(&c->ph, "regs_map", irg, PHASE_DEFAULT_GROWTH, regs_irn_data_init);
- c->arch_env = aenv;
- c->irg = irg;
- return c;
+ obstack_init(&iter->obst);
+ iter->n = 0;
+ iter->curr = 0;
+ iter->env = ifg->env;
+
+ irg_block_walk_graph(ifg->env->irg, nodes_walker, NULL, iter);
+ obstack_ptr_grow(&iter->obst, NULL);
+ iter->nodes = (ir_node**)obstack_finish(&iter->obst);
}
-static void get_irn_color(ir_node *irn, void *c)
+static inline void node_break(nodes_iter_t *it, int force)
{
- coloring_t *coloring = c;
- phase_get_or_set_irn_data(&coloring->ph, irn);
+ if ((it->curr >= it->n || force) && it->nodes) {
+ obstack_free(&it->obst, NULL);
+ it->nodes = NULL;
+ }
}
-static void restore_irn_color(ir_node *irn, void *c)
+static ir_node *get_next_node(nodes_iter_t *it)
{
- coloring_t *coloring = c;
- const arch_register_t *reg = phase_get_irn_data(&coloring->ph, irn);
- if(reg)
- arch_set_irn_register(coloring->arch_env, irn, reg);
-}
+ ir_node *res = NULL;
-void coloring_save(coloring_t *c)
-{
- irg_walk_graph(c->irg, NULL, get_irn_color, c);
-}
+ if (it->curr < it->n)
+ res = it->nodes[it->curr++];
-void coloring_restore(coloring_t *c)
-{
- irg_walk_graph(c->irg, NULL, restore_irn_color, c);
-}
+ node_break(it, 0);
-void (be_ifg_free)(void *self)
-{
- be_ifg_t *ifg = self;
- ifg->impl->free(self);
+ return res;
}
-int (be_ifg_connected)(const void *self, const ir_node *a, const ir_node *b)
+ir_node *be_ifg_nodes_begin(const be_ifg_t *ifg, nodes_iter_t *iter)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->connected(self, a, b);
+ find_nodes(ifg, iter);
+ return get_next_node(iter);
}
-ir_node *(be_ifg_neighbours_begin)(const void *self, void *iter, const ir_node *irn)
+ir_node *be_ifg_nodes_next(nodes_iter_t *iter)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->neighbours_begin(self, iter, irn);
+ return get_next_node(iter);
}
-ir_node *(be_ifg_neighbours_next)(const void *self, void *iter)
+void be_ifg_nodes_break(nodes_iter_t *iter)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->neighbours_next(self, iter);
+ node_break(iter, 1);
}
-void (be_ifg_neighbours_break)(const void *self, void *iter)
+static void find_neighbour_walker(ir_node *block, void *data)
{
- const be_ifg_t *ifg = self;
- ifg->impl->neighbours_break(self, iter);
-}
+ neighbours_iter_t *it = (neighbours_iter_t*)data;
+ struct list_head *head = get_block_border_head(it->env, block);
+ be_lv_t *lv = be_get_irg_liveness(it->env->irg);
-ir_node *(be_ifg_nodes_begin)(const void *self, void *iter)
-{
- const be_ifg_t *ifg = self;
- return ifg->impl->nodes_begin(self, iter);
-}
+ int has_started = 0;
-ir_node *(be_ifg_nodes_next)(const void *self, void *iter)
-{
- const be_ifg_t *ifg = self;
- return ifg->impl->nodes_next(self, iter);
-}
+ if (!be_is_live_in(lv, block, it->irn) && block != get_nodes_block(it->irn))
+ return;
-void (be_ifg_nodes_break)(const void *self, void *iter)
-{
- const be_ifg_t *ifg = self;
- ifg->impl->nodes_break(self, iter);
-}
+ foreach_border_head(head, b) {
+ ir_node *irn = b->irn;
-int (be_ifg_cliques_begin)(const void *self, void *iter, ir_node **buf)
-{
- const be_ifg_t *ifg = self;
- return ifg->impl->cliques_begin(self, iter, buf);
-}
+ if (irn == it->irn) {
+ if (b->is_def)
+ has_started = 1;
+ else
+ break; /* if we reached the end of the node's lifetime we can safely break */
+ }
+ else if (b->is_def) {
+ /* if any other node than the one in question starts living, add it to the set */
+ ir_nodeset_insert(&it->neighbours, irn);
+ }
+ else if (!has_started) {
+ /* we only delete, if the live range in question has not yet started */
+ ir_nodeset_remove(&it->neighbours, irn);
+ }
-int (be_ifg_cliques_next)(const void *self, void *iter)
-{
- const be_ifg_t *ifg = self;
- return ifg->impl->cliques_next(self, iter);
+ }
}
-void (be_ifg_cliques_break)(const void *self, void *iter)
+static void find_neighbours(const be_ifg_t *ifg, neighbours_iter_t *it, const ir_node *irn)
{
- const be_ifg_t *ifg = self;
- ifg->impl->cliques_break(self, iter);
+ it->env = ifg->env;
+ it->irn = irn;
+ it->valid = 1;
+ ir_nodeset_init(&it->neighbours);
+
+ dom_tree_walk(get_nodes_block(irn), find_neighbour_walker, NULL, it);
+
+ ir_nodeset_iterator_init(&it->iter, &it->neighbours);
}
-int (be_ifg_degree)(const void *self, const ir_node *irn)
+static inline void neighbours_break(neighbours_iter_t *it, int force)
{
- const be_ifg_t *ifg = self;
- return ifg->impl->degree(self, irn);
+ (void) force;
+ assert(it->valid == 1);
+ ir_nodeset_destroy(&it->neighbours);
+ it->valid = 0;
}
-
-int be_ifg_is_simplicial(const be_ifg_t *ifg, const ir_node *irn)
+static ir_node *get_next_neighbour(neighbours_iter_t *it)
{
- int degree = be_ifg_degree(ifg, irn);
- void *iter = be_ifg_neighbours_iter_alloca(ifg);
-
- ir_node **neighbours = xmalloc(degree * sizeof(neighbours[0]));
-
- ir_node *curr;
- int i, j;
+ ir_node *res = ir_nodeset_iterator_next(&it->iter);
- i = 0;
- be_ifg_foreach_neighbour(ifg, iter, irn, curr)
- neighbours[i++] = curr;
-
- for(i = 0; i < degree; ++i) {
- for(j = 0; j < i; ++j)
- if(!be_ifg_connected(ifg, neighbours[i], neighbours[j])) {
- free(neighbours);
- return 0;
- }
+ if (res == NULL) {
+ ir_nodeset_destroy(&it->neighbours);
}
-
-
- free(neighbours);
- return 1;
+ return res;
}
-void be_ifg_check(const be_ifg_t *ifg)
+ir_node *be_ifg_neighbours_begin(const be_ifg_t *ifg, neighbours_iter_t *iter,
+ const ir_node *irn)
{
- void *iter1 = be_ifg_nodes_iter_alloca(ifg);
- void *iter2 = be_ifg_neighbours_iter_alloca(ifg);
-
- ir_node *n, *m;
- int node_count = 0;
- int neighbours_count = 0;
- int degree = 0;
-
- /* count all nodes */
- ir_printf("\n\nFound the following nodes in the graph %+F:\n\n", current_ir_graph);
- be_ifg_foreach_node(ifg,iter1,n)
- {
- node_count++;
- degree = be_ifg_degree(ifg, n);
- ir_printf("%d. %+F with degree: %d\n", node_count, n, degree);
- }
-
- ir_printf("\n\nNumber of nodes: %d\n\n", node_count);
-
- /* Check, if all neighbours are indeed connected to the node. */
- be_ifg_foreach_node(ifg, iter1, n)
- {
- ir_printf("\n%+F; ", n);
- be_ifg_foreach_neighbour(ifg, iter2, n, m)
- {
- ir_printf("%+F; ", m);
- neighbours_count++;
- if(!be_ifg_connected(ifg, n, m))
- ir_fprintf(stderr, "%+F is a neighbour of %+F but they are not connected!\n", n, m);
- }
- }
- ir_printf("\n\nFound %d nodes in the 'check neighbour section'\n", neighbours_count);
+ find_neighbours(ifg, iter, irn);
+ return get_next_neighbour(iter);
}
-int be_ifg_check_get_node_count(const be_ifg_t *ifg)
+ir_node *be_ifg_neighbours_next(neighbours_iter_t *iter)
{
- void *iter = be_ifg_nodes_iter_alloca(ifg);
- int node_count = 0;
- ir_node *n;
-
- be_ifg_foreach_node(ifg, iter, n)
- {
- node_count++;
- }
-
- return node_count;
+ return get_next_neighbour(iter);
}
-static int be_ifg_check_cmp_nodes(const void *a, const void *b)
+void be_ifg_neighbours_break(neighbours_iter_t *iter)
{
- const ir_node *node_a = *(ir_node **)a;
- const ir_node *node_b = *(ir_node **)b;
-
- int nr_a = node_a->node_nr;
- int nr_b = node_b->node_nr;
-
- return QSORT_CMP(nr_a, nr_b);
+ neighbours_break(iter, 1);
}
-void be_ifg_check_sorted(const be_ifg_t *ifg)
+static inline void free_clique_iter(cliques_iter_t *it)
{
- void *iter1 = be_ifg_nodes_iter_alloca(ifg);
- void *iter2 = be_ifg_neighbours_iter_alloca(ifg);
-
- ir_node *n, *m;
- const int node_count = be_ifg_check_get_node_count(ifg);
- int neighbours_count = 0;
- int i = 0;
-
- ir_node **all_nodes = xmalloc(node_count * sizeof(all_nodes[0]));
-
- be_ifg_foreach_node(ifg, iter1, n)
- {
- if(!node_is_in_irgs_storage(ifg->env->irg, n))
- {
- printf ("+%F is in ifg but not in the current irg!",n);
- assert (node_is_in_irgs_storage(ifg->env->irg, n));
- }
-
- all_nodes[i] = n;
- i++;
- }
-
- qsort(all_nodes, node_count, sizeof(all_nodes[0]), be_ifg_check_cmp_nodes);
-
- for (i = 0; i < node_count; i++)
- {
- ir_node **neighbours = xmalloc(node_count * sizeof(neighbours[0]));
- int j = 0;
- int k = 0;
- int degree = 0;
-
- degree = be_ifg_degree(ifg, all_nodes[i]);
-
- be_ifg_foreach_neighbour(ifg, iter2, all_nodes[i], m)
- {
- neighbours[j] = m;
- j++;
- }
-
- qsort(neighbours, j, sizeof(neighbours[0]), be_ifg_check_cmp_nodes);
-
- ir_printf("%d. %+F's neighbours(%d): ", i+1, all_nodes[i], degree);
-
- for(k = 0; k < j; k++)
- {
- ir_printf("%+F, ", neighbours[k]);
- }
-
- ir_printf("\n");
-
- free(neighbours);
- }
-
- free(all_nodes);
-
+ it->n_blocks = -1;
+ obstack_free(&it->ob, NULL);
+ del_pset(it->living);
}
-void be_ifg_check_performance(be_chordal_env_t *chordal_env)
+static void get_blocks_dom_order(ir_node *blk, void *env)
{
- int tests = BE_CH_PERFORMANCETEST_COUNT;
- coloring_t coloring;
-
-#ifdef __linux__
- struct mallinfo minfo;
- int used_memory = 0;
-#endif /* __linux__ */
-
- int i = 0;
- int rt;
- copy_opt_t *co;
- be_ifg_t *old_if = chordal_env->ifg;
-
- lc_timer_t *timer = lc_timer_register("getTime","get Time of copy minimization using the ifg");
- unsigned long elapsed_usec = 0;
-
- if ((int) get_irg_estimated_node_cnt >= BE_CH_PERFORMANCETEST_MIN_NODES)
- {
-
- coloring_init(&coloring, chordal_env->irg, chordal_env->birg->main_env->arch_env);
- coloring_save(&coloring);
-
- lc_timer_reset(timer);
-
- for (i = 0; i<tests; i++) /* performance test with std */
- {
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks;
-#endif /* __linux__ */
-
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
-
- chordal_env->ifg = be_ifg_std_new(chordal_env);
-
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
-
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks - used_memory;
-#endif /* __linux__ */
-
- coloring_restore(&coloring);
-
- co = NULL;
- co = new_copy_opt(chordal_env, co_get_costs_loop_depth);
- co_build_ou_structure(co);
- co_build_graph_structure(co);
-
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
-
- co_solve_heuristic_new(co);
-
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
-
- co_free_graph_structure(co);
- co_free_ou_structure(co);
- free_copy_opt(co);
- be_ifg_free(chordal_env->ifg);
-
- }
-
- elapsed_usec = lc_timer_elapsed_usec(timer);
- /* calculating average */
- elapsed_usec = elapsed_usec / tests;
-
- ir_printf("\nstd:; %+F; ",current_ir_graph);
-#ifdef __linux__
- ir_printf("%u; ", used_memory);
-#endif /* __linux__ */
- ir_printf("%u; ", elapsed_usec);
-
- i=0;
-#ifdef __linux__
- used_memory=0;
-#endif /* __linux__ */
- elapsed_usec=0;
-
- for (i = 0; i<tests; i++) /* performance test with clique */
- {
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks;
-#endif /* __linux__ */
-
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
+ cliques_iter_t *it = (cliques_iter_t*)env;
+ obstack_ptr_grow(&it->ob, blk);
+}
- chordal_env->ifg = be_ifg_clique_new(chordal_env);
+/**
+ * NOTE: Be careful when changing this function!
+ * First understand the control flow of consecutive calls.
+ */
+static inline int get_next_clique(cliques_iter_t *it)
+{
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
+ /* continue in the block we left the last time */
+ for (; it->blk < it->n_blocks; it->blk++) {
+ int output_on_shrink = 0;
+ struct list_head *head = get_block_border_head(it->cenv, it->blocks[it->blk]);
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks - used_memory;
-#endif /* __linux__ */
+ /* on entry to a new block set the first border ... */
+ if (!it->bor)
+ it->bor = head->prev;
- coloring_restore(&coloring);
+ /* ... otherwise continue with the border we left the last time */
+ for (; it->bor != head; it->bor = it->bor->prev) {
+ border_t *b = list_entry(it->bor, border_t, list);
- co = NULL;
- co = new_copy_opt(chordal_env, co_get_costs_loop_depth);
- co_build_ou_structure(co);
- co_build_graph_structure(co);
+ /* if its a definition irn starts living */
+ if (b->is_def) {
+ pset_insert_ptr(it->living, b->irn);
+ if (b->is_real)
+ output_on_shrink = 1;
+ } else
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
+ /* if its the last usage the irn dies */
+ {
+ /* before shrinking the set, return the current maximal clique */
+ if (output_on_shrink) {
+ int count = 0;
- co_solve_heuristic_new(co);
+ /* fill the output buffer */
+ foreach_pset(it->living, ir_node, irn) {
+ it->buf[count++] = irn;
+ }
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
+ assert(count > 0 && "We have a 'last usage', so there must be sth. in it->living");
- co_free_graph_structure(co);
- co_free_ou_structure(co);
- free_copy_opt(co);
- be_ifg_free(chordal_env->ifg);
+ return count;
+ }
+ pset_remove_ptr(it->living, b->irn);
+ }
}
- elapsed_usec = lc_timer_elapsed_usec(timer);
- /* calculating average */
- elapsed_usec = elapsed_usec / tests;
-
- ir_printf("\nclique:; %+F; ",current_ir_graph);
-#ifdef __linux__
- ir_printf("%u; ", used_memory);
-#endif /* __linux__ */
- ir_printf("%u; ", elapsed_usec);
-
- i=0;
-#ifdef __linux__
- used_memory=0;
-#endif /* __linux__ */
- elapsed_usec=0;
-
- for (i = 0; i<tests; i++) /* performance test with list */
- {
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks;
-#endif /* __linux__ */
-
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
-
- chordal_env->ifg = be_ifg_list_new(chordal_env);
-
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
-
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks - used_memory;
-#endif /* __linux__ */
-
- coloring_restore(&coloring);
-
- co = NULL;
- co = new_copy_opt(chordal_env, co_get_costs_loop_depth);
- co_build_ou_structure(co);
- co_build_graph_structure(co);
+ it->bor = NULL;
+ assert(0 == pset_count(it->living) && "Something has survived! (At the end of the block it->living must be empty)");
+ }
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
+ if (it->n_blocks != -1)
+ free_clique_iter(it);
- co_solve_heuristic_new(co);
+ return -1;
+}
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
+int be_ifg_cliques_begin(const be_ifg_t *ifg, cliques_iter_t *it,
+ ir_node **buf)
+{
+ ir_node *start_bl = get_irg_start_block(ifg->env->irg);
- co_free_graph_structure(co);
- co_free_ou_structure(co);
- free_copy_opt(co);
- be_ifg_free(chordal_env->ifg);
+ obstack_init(&it->ob);
+ dom_tree_walk(start_bl, get_blocks_dom_order, NULL, it);
- }
+ it->cenv = ifg->env;
+ it->buf = buf;
+ it->n_blocks = obstack_object_size(&it->ob) / sizeof(void *);
+ it->blocks = (ir_node**)obstack_finish(&it->ob);
+ it->blk = 0;
+ it->bor = NULL;
+ it->living = pset_new_ptr(2 * arch_register_class_n_regs(it->cenv->cls));
- elapsed_usec = lc_timer_elapsed_usec(timer);
- /* calculating average */
- elapsed_usec = elapsed_usec / tests;
+ return get_next_clique(it);
+}
- ir_printf("\nlist:; %+F; ",current_ir_graph);
-#ifdef __linux__
- ir_printf("%u; ", used_memory);
-#endif /* __linux__ */
- ir_printf("%u; ", elapsed_usec);
+int be_ifg_cliques_next(cliques_iter_t *iter)
+{
+ return get_next_clique(iter);
+}
- i=0;
-#ifdef __linux__
- used_memory=0;
-#endif /* __linux__ */
- elapsed_usec=0;
+void be_ifg_cliques_break(cliques_iter_t *iter)
+{
+ free_clique_iter(iter);
+}
- for (i = 0; i<tests; i++) /* performance test with pointer */
- {
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks;
-#endif /* __linux__ */
+int be_ifg_degree(const be_ifg_t *ifg, const ir_node *irn)
+{
+ neighbours_iter_t it;
+ int degree;
+ find_neighbours(ifg, &it, irn);
+ degree = ir_nodeset_size(&it.neighbours);
+ neighbours_break(&it, 1);
+ return degree;
+}
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
+be_ifg_t *be_create_ifg(const be_chordal_env_t *env)
+{
+ be_ifg_t *ifg = XMALLOC(be_ifg_t);
+ ifg->env = env;
- chordal_env->ifg = be_ifg_pointer_new(chordal_env);
+ return ifg;
+}
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
+static void int_comp_rec(be_ifg_t *ifg, ir_node *n, bitset_t *seen)
+{
+ neighbours_iter_t neigh_it;
+ ir_node *m;
-#ifdef __linux__
- minfo = mallinfo();
- used_memory = minfo.uordblks - used_memory;
-#endif /* __linux__ */
+ be_ifg_foreach_neighbour(ifg, &neigh_it, n, m) {
+ if (bitset_is_set(seen, get_irn_idx(m)))
+ continue;
- coloring_restore(&coloring);
+ if (arch_get_irn_register_req(m)->type & arch_register_req_type_ignore)
+ continue;
- co = NULL;
- co = new_copy_opt(chordal_env, co_get_costs_loop_depth);
- co_build_ou_structure(co);
- co_build_graph_structure(co);
+ bitset_set(seen, get_irn_idx(m));
+ int_comp_rec(ifg, m, seen);
+ }
- rt = lc_timer_enter_high_priority();
- lc_timer_start(timer);
+}
- co_solve_heuristic_new(co);
+static int int_component_stat(ir_graph *irg, be_ifg_t *ifg)
+{
+ int n_comp = 0;
+ nodes_iter_t nodes_it;
+ bitset_t *seen = bitset_malloc(get_irg_last_idx(irg));
- lc_timer_stop(timer);
- rt = lc_timer_leave_high_priority();
+ ir_node *n;
- co_free_graph_structure(co);
- co_free_ou_structure(co);
- free_copy_opt(co);
- be_ifg_free(chordal_env->ifg);
+ be_ifg_foreach_node(ifg, &nodes_it, n) {
+ if (bitset_is_set(seen, get_irn_idx(n)))
+ continue;
- }
+ if (arch_get_irn_register_req(n)->type & arch_register_req_type_ignore)
+ continue;
- elapsed_usec = lc_timer_elapsed_usec(timer);
- /* calculating average */
- elapsed_usec = elapsed_usec / tests;
-
- ir_printf("\npointer:; %+F; ",current_ir_graph);
-#ifdef __linux__
- ir_printf("%u; ", used_memory);
-#endif /* __linux__ */
- ir_printf("%u; ", elapsed_usec);
-
- i=0;
-#ifdef __linux__
- used_memory=0;
-#endif /* __linux__ */
- elapsed_usec=0;
+ ++n_comp;
+ bitset_set(seen, get_irn_idx(n));
+ int_comp_rec(ifg, n, seen);
}
- chordal_env->ifg = old_if;
+ free(seen);
+ return n_comp;
}
-void be_ifg_dump_dot(be_ifg_t *ifg, ir_graph *irg, FILE *file, const be_ifg_dump_dot_cb_t *cb, void *self)
+void be_ifg_stat(ir_graph *irg, be_ifg_t *ifg, be_ifg_stat_t *stat)
{
- void *nodes_it = be_ifg_nodes_iter_alloca(ifg);
- void *neigh_it = be_ifg_neighbours_iter_alloca(ifg);
- bitset_t *nodes = bitset_malloc(get_irg_last_idx(irg));
-
- ir_node *n, *m;
-
- fprintf(file, "graph G {\n\tgraph [");
- if(cb->graph_attr)
- cb->graph_attr(file, self);
- fprintf(file, "];\n");
-
- if(cb->at_begin)
- cb->at_begin(file, self);
-
- be_ifg_foreach_node(ifg, nodes_it, n) {
- if(cb->is_dump_node && cb->is_dump_node(self, n)) {
- int idx = get_irn_idx(n);
- bitset_set(nodes, idx);
- fprintf(file, "\tnode [");
- if(cb->node_attr)
- cb->node_attr(file, self, n);
- fprintf(file, "]; n%d;\n", idx);
- }
- }
-
- /* Check, if all neighbours are indeed connected to the node. */
- be_ifg_foreach_node(ifg, nodes_it, n) {
- be_ifg_foreach_neighbour(ifg, neigh_it, n, m) {
- int n_idx = get_irn_idx(n);
- int m_idx = get_irn_idx(m);
-
- if(n_idx < m_idx && bitset_is_set(nodes, n_idx) && bitset_is_set(nodes, m_idx)) {
- fprintf(file, "\tn%d -- n%d [", n_idx, m_idx);
- if(cb->edge_attr)
- cb->edge_attr(file, self, n, m);
- fprintf(file, "];\n");
- }
+ nodes_iter_t nodes_it;
+ neighbours_iter_t neigh_it;
+ bitset_t *nodes = bitset_malloc(get_irg_last_idx(irg));
+ ir_node *n, *m;
+
+ memset(stat, 0, sizeof(stat[0]));
+
+ be_ifg_foreach_node(ifg, &nodes_it, n) {
+ stat->n_nodes += 1;
+ be_ifg_foreach_neighbour(ifg, &neigh_it, n, m) {
+ bitset_set(nodes, get_irn_idx(n));
+ stat->n_edges += !bitset_is_set(nodes, get_irn_idx(m));
}
}
- if(cb->at_end)
- cb->at_end(file, self);
-
- fprintf(file, "}\n");
+ stat->n_comps = int_component_stat(irg, ifg);
bitset_free(nodes);
}