+/*
+ * 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.
+ */
+
/**
- * Author: Daniel Grund
- * Date: 12.04.2005
- * Copyright: (c) Universitaet Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * @file
+ * @brief Copy minimization driver.
+ * @author Daniel Grund
+ * @date 12.04.2005
+ * @version $Id$
+ *
+ * Main file for the optimization reducing the copies needed for:
+ * - Phi coalescing
+ * - Register-constrained nodes
+ * - Two-address code instructions
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
+#include "execfreq.h"
#include "xmalloc.h"
#include "debug.h"
#include "pmap.h"
+#include "raw_bitset.h"
+#include "irnode.h"
#include "irgraph.h"
#include "irgwalk.h"
#include "irprog.h"
#include "irloop_t.h"
#include "iredges_t.h"
#include "phiclass.h"
+#include "irbitset.h"
+#include "irphase_t.h"
+#include "irprintf_t.h"
-#include "bearch.h"
+#include "bemodule.h"
+#include "bearch_t.h"
+#include "benode_t.h"
#include "beutil.h"
#include "beifg_t.h"
+#include "beintlive_t.h"
#include "becopyopt_t.h"
#include "becopystat.h"
+#include "belive_t.h"
+#include "beinsn_t.h"
+#include "besched_t.h"
+#include "bejavacoal.h"
+#include "bestatevent.h"
+#include "beirg_t.h"
+#include "error.h"
+
+#include "lc_opts.h"
+#include "lc_opts_enum.h"
+
+#define DUMP_BEFORE 1
+#define DUMP_AFTER 2
+#define DUMP_APPEL 4
+#define DUMP_ALL 2 * DUMP_APPEL - 1
+
+#define COST_FUNC_FREQ 1
+#define COST_FUNC_LOOP 2
+#define COST_FUNC_ALL_ONE 3
+
+static unsigned dump_flags = 0;
+static unsigned style_flags = 0;
+static unsigned do_stats = 0;
+static cost_fct_t cost_func = co_get_costs_exec_freq;
+static unsigned algo = CO_ALGO_HEUR4;
+static int improve = 1;
+
+static const lc_opt_enum_mask_items_t dump_items[] = {
+ { "before", DUMP_BEFORE },
+ { "after", DUMP_AFTER },
+ { "appel", DUMP_APPEL },
+ { "all", DUMP_ALL },
+ { NULL, 0 }
+};
+
+static const lc_opt_enum_mask_items_t style_items[] = {
+ { "color", CO_IFG_DUMP_COLORS },
+ { "labels", CO_IFG_DUMP_LABELS },
+ { "constr", CO_IFG_DUMP_CONSTR },
+ { "shape", CO_IFG_DUMP_SHAPE },
+ { "full", 2 * CO_IFG_DUMP_SHAPE - 1 },
+ { NULL, 0 }
+};
+
+static const lc_opt_enum_mask_items_t algo_items[] = {
+ { "none", CO_ALGO_NONE },
+ { "heur", CO_ALGO_HEUR },
+ { "heur2", CO_ALGO_HEUR2 },
+ { "heur3", CO_ALGO_HEUR3 },
+ { "heur4", CO_ALGO_HEUR4 },
+ { "ilp", CO_ALGO_ILP },
+ { NULL, 0 }
+};
+
+typedef int (*opt_funcptr)(void);
+
+static const lc_opt_enum_func_ptr_items_t cost_func_items[] = {
+ { "freq", (opt_funcptr) co_get_costs_exec_freq },
+ { "loop", (opt_funcptr) co_get_costs_loop_depth },
+ { "one", (opt_funcptr) co_get_costs_all_one },
+ { NULL, NULL }
+};
+
+static lc_opt_enum_mask_var_t dump_var = {
+ &dump_flags, dump_items
+};
+
+static lc_opt_enum_mask_var_t style_var = {
+ &style_flags, style_items
+};
+
+static lc_opt_enum_mask_var_t algo_var = {
+ &algo, algo_items
+};
+
+static lc_opt_enum_func_ptr_var_t cost_func_var = {
+ (opt_funcptr*) &cost_func, cost_func_items
+};
+
+static const lc_opt_table_entry_t options[] = {
+ LC_OPT_ENT_ENUM_INT ("algo", "select copy optimization algo", &algo_var),
+ LC_OPT_ENT_ENUM_FUNC_PTR ("cost", "select a cost function", &cost_func_var),
+ LC_OPT_ENT_ENUM_MASK ("dump", "dump ifg before or after copy optimization", &dump_var),
+ LC_OPT_ENT_ENUM_MASK ("style", "dump style for ifg dumping", &style_var),
+ LC_OPT_ENT_BOOL ("stats", "dump statistics after each optimization", &do_stats),
+ LC_OPT_ENT_BOOL ("improve", "run heur3 before if algo can exploit start solutions", &improve),
+ LC_OPT_LAST
+};
+
+/* Insert additional options registration functions here. */
+extern void be_co_ilp_register_options(lc_opt_entry_t *grp);
+extern void be_co2_register_options(lc_opt_entry_t *grp);
+extern void be_co3_register_options(lc_opt_entry_t *grp);
+
+void be_init_copycoal(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_add_table(co_grp, options);
+}
+
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_copycoal);
#undef QUICK_AND_DIRTY_HACK
+static int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
+{
+ if (env->ifg)
+ return be_ifg_connected(env->ifg, a, b);
+ else
+ return values_interfere(env->birg, a, b);
+}
+
+
/******************************************************************************
_____ _
/ ____| | |
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
-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)) {
+copy_opt_t *new_copy_opt(be_chordal_env_t *chordal_env, cost_fct_t get_costs)
+{
const char *s1, *s2, *s3;
int len;
copy_opt_t *co;
}
int co_is_optimizable_root(const copy_opt_t *co, ir_node *irn) {
- arch_register_req_t req;
+ const arch_register_req_t *req;
const arch_register_t *reg;
if (arch_irn_is(co->aenv, irn, ignore))
if (arch_register_type_is(reg, ignore))
return 0;
- if (is_Reg_Phi(irn) || is_Perm_Proj(co->aenv, irn) || is_2addr_code(co->aenv, irn, &req))
+ req = arch_get_register_req(co->aenv, irn, -1);
+ if (is_Reg_Phi(irn) || is_Perm_Proj(co->aenv, irn) || is_2addr_code(req))
return 1;
return 0;
}
-int co_is_optimizable_arg(const copy_opt_t *co, ir_node *irn) {
- const ir_edge_t *edge;
- const arch_register_t *reg;
-
- assert(0 && "Is buggy and obsolete. Do not use");
-
- if (arch_irn_is(co->aenv, irn, ignore))
- return 0;
-
- reg = arch_get_irn_register(co->aenv, irn);
- if (arch_register_type_is(reg, ignore))
- return 0;
-
- 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 co_get_costs_loop_depth(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos) {
int cost = 0;
ir_loop *loop;
ir_node *root_block = get_nodes_block(root);
+ (void) co;
+ (void) arg;
if (is_Phi(root)) {
/* for phis the copies are placed in the corresponding pred-block */
int d = get_loop_depth(loop);
cost = d*d;
}
- return cost+1;
+ return 1+cost;
}
-int co_get_costs_all_one(ir_node *root, ir_node* arg, int pos) {
+int co_get_costs_exec_freq(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos) {
+ int res;
+ ir_node *root_bl = get_nodes_block(root);
+ ir_node *copy_bl = is_Phi(root) ? get_Block_cfgpred_block(root_bl, pos) : root_bl;
+ (void) arg;
+ res = get_block_execfreq_ulong(co->cenv->birg->exec_freq, copy_bl);
+
+ /* don't allow values smaller than one. */
+ return res < 1 ? 1 : res;
+}
+
+
+int co_get_costs_all_one(const copy_opt_t *co, ir_node *root, ir_node *arg, int pos) {
+ (void) co;
+ (void) root;
+ (void) arg;
+ (void) pos;
return 1;
}
ir_node **safe, **unsafe;
int i, o, safe_count, safe_costs, unsafe_count, *unsafe_costs;
bitset_t *curr;
- int max, pos, curr_weight, best_weight = 0;
+ bitset_pos_t pos;
+ int max, curr_weight, best_weight = 0;
/* assign the nodes into two groups.
* safe: node has no interference, hence it is in every max stable set.
static void co_collect_units(ir_node *irn, void *env) {
copy_opt_t *co = env;
unit_t *unit;
- arch_register_req_t req;
if (!is_curr_reg_class(co, irn))
return;
if (arg == irn)
continue;
if (nodes_interfere(co->cenv, irn, arg)) {
- unit->inevitable_costs += co->get_costs(irn, arg, i);
+ unit->inevitable_costs += co->get_costs(co, irn, arg, i);
continue;
}
/* Else insert the argument of the phi to the members of this ou */
DBG((dbg, LEVEL_1, "\t Member: %+F\n", arg));
- /* Check if arg has occurred at a prior position in the arg/list */
- arg_pos = 0;
- for (o=0; o<unit->node_count; ++o)
- if (unit->nodes[o] == arg) {
- arg_pos = o;
- break;
+ if (! arch_irn_is(co->aenv, arg, ignore)) {
+ /* Check if arg has occurred at a prior position in the arg/list */
+ arg_pos = 0;
+ for (o=1; o<unit->node_count; ++o) {
+ if (unit->nodes[o] == arg) {
+ arg_pos = o;
+ break;
+ }
}
- if (!arg_pos) { /* a new argument */
- /* insert node, set costs */
- unit->nodes[unit->node_count] = arg;
- unit->costs[unit->node_count] = co->get_costs(irn, arg, i);
- unit->node_count++;
- } else { /* arg has occured before in same phi */
- /* increase costs for existing arg */
- unit->costs[arg_pos] += co->get_costs(irn, arg, i);
+ if (!arg_pos) { /* a new argument */
+ /* insert node, set costs */
+ unit->nodes[unit->node_count] = arg;
+ unit->costs[unit->node_count] = co->get_costs(co, irn, arg, i);
+ unit->node_count++;
+ } else { /* arg has occurred before in same phi */
+ /* increase costs for existing arg */
+ unit->costs[arg_pos] += co->get_costs(co, irn, arg, i);
+ }
}
}
unit->nodes = xrealloc(unit->nodes, unit->node_count * sizeof(*unit->nodes));
unit->costs = xrealloc(unit->costs, unit->node_count * sizeof(*unit->costs));
- } else
-
- /* Proj of a perm with corresponding arg */
- if (is_Perm_Proj(co->aenv, irn)) {
+ } else if (is_Perm_Proj(co->aenv, irn)) {
+ /* Proj of a perm with corresponding arg */
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_Perm_src(irn);
- unit->costs[1] = co->get_costs(irn, unit->nodes[1], -1);
- } else
+ unit->costs[1] = co->get_costs(co, irn, unit->nodes[1], -1);
+ } else {
+ const arch_register_req_t *req =
+ arch_get_register_req(co->aenv, irn, -1);
+
+ /* Src == Tgt of a 2-addr-code instruction */
+ if (is_2addr_code(req)) {
+ const unsigned other = req->other_same;
+ int count = 0;
+ int i;
+
+ for (i = 0; (1U << i) <= other; ++i) {
+ if (other & (1U << i)) {
+ ir_node *o = get_irn_n(skip_Proj(irn), i);
+ if (!arch_irn_is(co->aenv, o, ignore) &&
+ !nodes_interfere(co->cenv, irn, o)) {
+ ++count;
+ }
+ }
+ }
- /* Src == Tgt of a 2-addr-code instruction */
- 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, -1);
+ if (count != 0) {
+ int k = 0;
+ ++count;
+ unit->nodes = xmalloc(count * sizeof(*unit->nodes));
+ unit->costs = xmalloc(count * sizeof(*unit->costs));
+ unit->node_count = count;
+ unit->nodes[k++] = irn;
+
+ for (i = 0; 1U << i <= other; ++i) {
+ if (other & (1U << i)) {
+ ir_node *o = get_irn_n(skip_Proj(irn), i);
+ if (!arch_irn_is(co->aenv, o, ignore) &&
+ !nodes_interfere(co->cenv, irn, o)) {
+ unit->nodes[k] = o;
+ unit->costs[k] = co->get_costs(co, irn, o, -1);
+ ++k;
+ }
+ }
+ }
+ }
+ } else {
+ assert(0 && "This is not an optimizable node!");
}
- } else
- assert(0 && "This is not an optimizable node!");
+ }
/* Insert the new unit at a position according to its costs */
if (unit->node_count > 1) {
return res;
}
+void co_complete_stats(const copy_opt_t *co, co_complete_stats_t *stat)
+{
+ bitset_t *seen = bitset_irg_malloc(co->irg);
+ affinity_node_t *an;
+
+ memset(stat, 0, sizeof(stat[0]));
+
+ /* count affinity edges. */
+ co_gs_foreach_aff_node(co, an) {
+ neighb_t *neigh;
+ stat->aff_nodes += 1;
+ bitset_add_irn(seen, an->irn);
+ co_gs_foreach_neighb(an, neigh) {
+ if(!bitset_contains_irn(seen, neigh->irn)) {
+ stat->aff_edges += 1;
+ stat->max_costs += neigh->costs;
+
+ if(get_irn_col(co, an->irn) != get_irn_col(co, neigh->irn)) {
+ stat->costs += neigh->costs;
+ stat->unsatisfied_edges += 1;
+ }
+
+ if(nodes_interfere(co->cenv, an->irn, neigh->irn)) {
+ stat->aff_int += 1;
+ stat->inevit_costs += neigh->costs;
+ }
+
+ }
+ }
+ }
+
+ bitset_free(seen);
+}
+
/******************************************************************************
_____ _ _____ _
/ ____| | | / ____| |
static int compare_affinity_node_t(const void *k1, const void *k2, size_t size) {
const affinity_node_t *n1 = k1;
const affinity_node_t *n2 = k2;
+ (void) size;
return (n1->irn != n2->irn);
}
static void add_edge(copy_opt_t *co, ir_node *n1, ir_node *n2, int costs) {
affinity_node_t new_node, *node;
- neighb_t new_nbr, *nbr;
- int allocnew;
+ neighb_t *nbr;
+ int allocnew = 1;
new_node.irn = n1;
new_node.degree = 0;
new_node.neighbours = NULL;
- node = set_insert(co->nodes, &new_node, sizeof(new_node), HASH_PTR(new_node.irn));
+ node = set_insert(co->nodes, &new_node, sizeof(new_node), hash_irn(new_node.irn));
- allocnew = 1;
for (nbr = node->neighbours; nbr; nbr = nbr->next)
if (nbr->irn == n2) {
allocnew = 0;
/* 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 = obstack_alloc(&co->obst, sizeof(*nbr));
nbr->irn = n2;
nbr->costs = 0;
nbr->next = node->neighbours;
+
node->neighbours = nbr;
node->degree++;
}
static void build_graph_walker(ir_node *irn, void *env) {
copy_opt_t *co = env;
int pos, max;
- arch_register_req_t req;
const arch_register_t *reg;
if (!is_curr_reg_class(co, irn) || arch_irn_is(co->aenv, irn, ignore))
if (arch_register_type_is(reg, ignore))
return;
- /* Phis */
- if (is_Reg_Phi(irn))
+ if (is_Reg_Phi(irn)) { /* Phis */
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));
+ add_edges(co, irn, arg, co->get_costs(co, irn, arg, pos));
}
-
- /* Perms */
- else if (is_Perm_Proj(co->aenv, irn)) {
+ }
+ else if (is_Perm_Proj(co->aenv, irn)) { /* Perms */
ir_node *arg = get_Perm_src(irn);
- add_edges(co, irn, arg, co->get_costs(irn, arg, 0));
+ add_edges(co, irn, arg, co->get_costs(co, irn, arg, 0));
+ }
+ else { /* 2-address code */
+ const arch_register_req_t *req = arch_get_register_req(co->aenv, irn, -1);
+ if (is_2addr_code(req)) {
+ const unsigned other = req->other_same;
+ int i;
+
+ for (i = 0; 1U << i <= other; ++i) {
+ if (other & (1U << i)) {
+ ir_node *other = get_irn_n(skip_Proj(irn), i);
+ if (! arch_irn_is(co->aenv, other, ignore))
+ add_edges(co, irn, other, co->get_costs(co, irn, other, 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) {
ASSERT_GS_AVAIL(co);
new_node.irn = irn;
- n = set_find(co->nodes, &new_node, sizeof(new_node), HASH_PTR(new_node.irn));
+ n = set_find(co->nodes, &new_node, sizeof(new_node), hash_irn(new_node.irn));
if (n) {
return (n->degree > 0);
} else
return 0;
}
+static int co_dump_appel_disjoint_constraints(const copy_opt_t *co, ir_node *a, ir_node *b)
+{
+ ir_node *nodes[] = { a, b };
+ bitset_t *constr[] = { NULL, NULL };
+ const arch_register_req_t *req;
+ int j;
+
+ constr[0] = bitset_alloca(co->cls->n_regs);
+ constr[1] = bitset_alloca(co->cls->n_regs);
+
+ for (j = 0; j < 2; ++j) {
+ req = arch_get_register_req(co->aenv, nodes[j], BE_OUT_POS(0));
+ if(arch_register_req_is(req, limited))
+ rbitset_copy_to_bitset(req->limited, constr[j]);
+ else
+ bitset_set_all(constr[j]);
+
+ }
+
+ return !bitset_intersect(constr[0], constr[1]);
+}
+
void co_dump_appel_graph(const copy_opt_t *co, FILE *f)
{
- be_ifg_t *ifg = co->cenv->ifg;
+ be_ifg_t *ifg = co->cenv->ifg;
+ int *color_map = alloca(co->cls->n_regs * sizeof(color_map[0]));
+ int *node_map = xmalloc((get_irg_last_idx(co->irg) + 1) * sizeof(node_map[0]));
ir_node *irn;
void *it, *nit;
- int n;
+ int n, n_regs;
+ unsigned i;
+
+ n_regs = 0;
+ for(i = 0; i < co->cls->n_regs; ++i) {
+ const arch_register_t *reg = &co->cls->regs[i];
+ color_map[i] = arch_register_type_is(reg, ignore) ? -1 : n_regs++;
+ }
+
+ /*
+ * n contains the first node number.
+ * the values below n are the pre-colored register nodes
+ */
it = be_ifg_nodes_iter_alloca(ifg);
nit = be_ifg_neighbours_iter_alloca(ifg);
- n = 0;
+ n = n_regs;
be_ifg_foreach_node(ifg, it, irn) {
- set_irn_link(irn, INT_TO_PTR(n++));
+ if(!arch_irn_is(co->aenv, irn, ignore))
+ node_map[get_irn_idx(irn)] = n++;
}
- fprintf(f, "%d %d\n", n, co->cls->n_regs);
+ fprintf(f, "%d %d\n", n, n_regs);
be_ifg_foreach_node(ifg, it, irn) {
- int idx = PTR_TO_INT(get_irn_link(irn));
- affinity_node_t *a = get_affinity_info(co, irn);
+ if(!arch_irn_is(co->aenv, irn, ignore)) {
+ int idx = node_map[get_irn_idx(irn)];
+ affinity_node_t *a = get_affinity_info(co, irn);
+
+ const arch_register_req_t *req;
+ ir_node *adj;
+
+ req = arch_get_register_req(co->aenv, irn, BE_OUT_POS(0));
+ if(arch_register_req_is(req, limited)) {
+ for(i = 0; i < co->cls->n_regs; ++i) {
+ if(!rbitset_is_set(req->limited, i) && color_map[i] >= 0)
+ fprintf(f, "%d %d -1\n", color_map[i], idx);
+ }
+ }
+
+ be_ifg_foreach_neighbour(ifg, nit, irn, adj) {
+ if(!arch_irn_is(co->aenv, adj, ignore) && !co_dump_appel_disjoint_constraints(co, irn, adj)) {
+ int adj_idx = node_map[get_irn_idx(adj)];
+ if(idx < adj_idx)
+ fprintf(f, "%d %d -1\n", idx, adj_idx);
+ }
+ }
- ir_node *adj;
+ if(a) {
+ neighb_t *n;
- be_ifg_foreach_neighbour(ifg, nit, irn, adj) {
- int adj_idx = PTR_TO_INT(get_irn_link(adj));
- if(idx < adj_idx)
- fprintf(f, "%d %d -1\n", idx, adj_idx);
+ co_gs_foreach_neighb(a, n) {
+ if(!arch_irn_is(co->aenv, n->irn, ignore)) {
+ int n_idx = node_map[get_irn_idx(n->irn)];
+ if(idx < n_idx)
+ fprintf(f, "%d %d %d\n", idx, n_idx, (int) n->costs);
+ }
+ }
+ }
}
+ }
+
+ xfree(node_map);
+}
+
+/*
+ ___ _____ ____ ____ ___ _____ ____ _
+ |_ _| ___/ ___| | _ \ / _ \_ _| | _ \ _ _ _ __ ___ _ __ (_)_ __ __ _
+ | || |_ | | _ | | | | | | || | | | | | | | | '_ ` _ \| '_ \| | '_ \ / _` |
+ | || _|| |_| | | |_| | |_| || | | |_| | |_| | | | | | | |_) | | | | | (_| |
+ |___|_| \____| |____/ \___/ |_| |____/ \__,_|_| |_| |_| .__/|_|_| |_|\__, |
+ |_| |___/
+*/
+
+static const char *get_dot_color_name(size_t col)
+{
+ static const char *names[] = {
+ "blue",
+ "red",
+ "green",
+ "yellow",
+ "cyan",
+ "magenta",
+ "orange",
+ "chocolate",
+ "beige",
+ "navy",
+ "darkgreen",
+ "darkred",
+ "lightPink",
+ "chartreuse",
+ "lightskyblue",
+ "linen",
+ "pink",
+ "lightslateblue",
+ "mintcream",
+ "red",
+ "darkolivegreen",
+ "mediumblue",
+ "mistyrose",
+ "salmon",
+ "darkseagreen",
+ "mediumslateblue"
+ "moccasin",
+ "tomato",
+ "forestgreen",
+ "darkturquoise",
+ "palevioletred"
+ };
+
+ return col < sizeof(names)/sizeof(names[0]) ? names[col] : "white";
+}
+
+typedef struct _co_ifg_dump_t {
+ const copy_opt_t *co;
+ unsigned flags;
+} co_ifg_dump_t;
- if(a) {
- neighb_t *n;
+static void ifg_dump_graph_attr(FILE *f, void *self)
+{
+ (void) self;
+ fprintf(f, "overlap=scale");
+}
+
+static int ifg_is_dump_node(void *self, ir_node *irn)
+{
+ co_ifg_dump_t *cod = self;
+ return !arch_irn_is(cod->co->aenv, irn, ignore);
+}
- co_gs_foreach_neighb(a, n) {
- int n_idx = PTR_TO_INT(get_irn_link(n->irn));
- if(idx < n_idx)
- fprintf(f, "%d %d %d\n", idx, n_idx, n->costs);
+static void ifg_dump_node_attr(FILE *f, void *self, ir_node *irn)
+{
+ co_ifg_dump_t *env = self;
+ const arch_register_t *reg = arch_get_irn_register(env->co->aenv, irn);
+ const arch_register_req_t *req;
+ int limited;
+
+ req = arch_get_register_req(env->co->aenv, irn, BE_OUT_POS(0));
+ limited = arch_register_req_is(req, limited);
+
+ if(env->flags & CO_IFG_DUMP_LABELS) {
+ ir_fprintf(f, "label=\"%+F", irn);
+
+ if((env->flags & CO_IFG_DUMP_CONSTR) && limited) {
+ bitset_t *bs = bitset_alloca(env->co->cls->n_regs);
+ rbitset_copy_to_bitset(req->limited, bs);
+ ir_fprintf(f, "\\n%B", bs);
+ }
+ ir_fprintf(f, "\" ");
+ } else {
+ fprintf(f, "label=\"\" shape=point " );
+ }
+
+ if(env->flags & CO_IFG_DUMP_SHAPE)
+ fprintf(f, "shape=%s ", limited ? "diamond" : "ellipse");
+
+ if(env->flags & CO_IFG_DUMP_COLORS)
+ fprintf(f, "style=filled color=%s ", get_dot_color_name(reg->index));
+}
+
+static void ifg_dump_at_end(FILE *file, void *self)
+{
+ co_ifg_dump_t *env = self;
+ affinity_node_t *a;
+
+ co_gs_foreach_aff_node(env->co, a) {
+ const arch_register_t *ar = arch_get_irn_register(env->co->aenv, a->irn);
+ unsigned aidx = get_irn_idx(a->irn);
+ neighb_t *n;
+
+ co_gs_foreach_neighb(a, n) {
+ const arch_register_t *nr = arch_get_irn_register(env->co->aenv, n->irn);
+ unsigned nidx = get_irn_idx(n->irn);
+
+ if(aidx < nidx) {
+ const char *color = nr == ar ? "blue" : "red";
+ fprintf(file, "\tn%d -- n%d [weight=0.01 ", aidx, nidx);
+ if(env->flags & CO_IFG_DUMP_LABELS)
+ fprintf(file, "label=\"%d\" ", n->costs);
+ if(env->flags & CO_IFG_DUMP_COLORS)
+ fprintf(file, "color=%s ", color);
+ else
+ fprintf(file, "style=dotted");
+ fprintf(file, "];\n");
}
}
}
}
+
+
+static be_ifg_dump_dot_cb_t ifg_dot_cb = {
+ ifg_is_dump_node,
+ ifg_dump_graph_attr,
+ ifg_dump_node_attr,
+ NULL,
+ NULL,
+ ifg_dump_at_end
+};
+
+
+
+void co_dump_ifg_dot(const copy_opt_t *co, FILE *f, unsigned flags)
+{
+ co_ifg_dump_t cod;
+
+ cod.co = co;
+ cod.flags = flags;
+ be_ifg_dump_dot(co->cenv->ifg, co->irg, f, &ifg_dot_cb, &cod);
+}
+
+
+void co_solve_park_moon(copy_opt_t *opt)
+{
+ (void) opt;
+}
+
+static int void_algo(copy_opt_t *co)
+{
+ (void) co;
+ return 0;
+}
+
+/*
+ _ _ _ _ _
+ / \ | | __ _ ___ _ __(_) |_| |__ _ __ ___ ___
+ / _ \ | |/ _` |/ _ \| '__| | __| '_ \| '_ ` _ \/ __|
+ / ___ \| | (_| | (_) | | | | |_| | | | | | | | \__ \
+ /_/ \_\_|\__, |\___/|_| |_|\__|_| |_|_| |_| |_|___/
+ |___/
+*/
+
+typedef struct {
+ co_algo_t *algo;
+ const char *name;
+ int can_improve_existing;
+} co_algo_info_t;
+
+static co_algo_info_t algos[] = {
+ { void_algo, "none", 0 },
+ { co_solve_heuristic, "heur1", 0 },
+ { co_solve_heuristic_new, "heur2", 0 },
+#ifdef WITH_JVM
+ { co_solve_heuristic_java, "heur3", 0 },
+#else
+ { NULL, "heur3", 0 },
+#endif
+ { co_solve_heuristic_mst, "heur4", 0 },
+#ifdef WITH_ILP
+ { co_solve_ilp2, "ilp", 1 },
+#else
+ { NULL, "ilp", 1 },
+#endif
+ { NULL, "", 0 }
+};
+
+/*
+ __ __ _ ____ _
+ | \/ | __ _(_)_ __ | _ \ _ __(_)_ _____ _ __
+ | |\/| |/ _` | | '_ \ | | | | '__| \ \ / / _ \ '__|
+ | | | | (_| | | | | | | |_| | | | |\ V / __/ |
+ |_| |_|\__,_|_|_| |_| |____/|_| |_| \_/ \___|_|
+
+*/
+
+static FILE *my_open(const be_chordal_env_t *env, const char *prefix, const char *suffix)
+{
+ FILE *result;
+ char buf[1024];
+ size_t i, n;
+ char *tu_name;
+
+ n = strlen(env->birg->main_env->cup_name);
+ tu_name = xmalloc((n + 1) * sizeof(*tu_name));
+ strcpy(tu_name, env->birg->main_env->cup_name);
+ for (i = 0; i < n; ++i)
+ if (tu_name[i] == '.')
+ tu_name[i] = '_';
+
+
+ ir_snprintf(buf, sizeof(buf), "%s%s_%F_%s%s", prefix, tu_name, env->irg, env->cls->name, suffix);
+ xfree(tu_name);
+ result = fopen(buf, "wt");
+ if(result == NULL) {
+ panic("Couldn't open '%s' for writing.", buf);
+ }
+
+ return result;
+}
+
+void co_driver(be_chordal_env_t *cenv)
+{
+ ir_timer_t *timer = ir_timer_register("firm.be.copyopt", "runtime");
+ co_complete_stats_t before, after;
+ copy_opt_t *co;
+ co_algo_t *algo_func;
+ int was_optimal = 0;
+
+ if (algo >= CO_ALGO_LAST)
+ return;
+
+ be_liveness_assure_chk(be_get_birg_liveness(cenv->birg));
+
+ co = new_copy_opt(cenv, cost_func);
+ co_build_ou_structure(co);
+ co_build_graph_structure(co);
+
+ co_complete_stats(co, &before);
+
+ be_stat_ev_ull("co_aff_nodes", before.aff_nodes);
+ be_stat_ev_ull("co_aff_edges", before.aff_edges);
+ be_stat_ev_ull("co_max_costs", before.max_costs);
+ be_stat_ev_ull("co_inevit_costs", before.inevit_costs);
+ be_stat_ev_ull("co_aff_int", before.aff_int);
+
+ be_stat_ev_ull("co_init_costs", before.costs);
+ be_stat_ev_ull("co_init_unsat", before.unsatisfied_edges);
+
+ if (dump_flags & DUMP_BEFORE) {
+ FILE *f = my_open(cenv, "", "-before.dot");
+ co_dump_ifg_dot(co, f, style_flags);
+ fclose(f);
+ }
+
+ /* if the algo can improve results, provide an initial solution with heur3 */
+ if (improve && algos[algo].can_improve_existing) {
+ co_complete_stats_t stats;
+
+ /* produce a heuristic solution */
+#ifdef WITH_JVM
+ co_solve_heuristic_java(co);
+#else
+ co_solve_heuristic(co);
+#endif /* WITH_JVM */
+
+ /* do the stats and provide the current costs */
+ co_complete_stats(co, &stats);
+ be_stat_ev_ull("co_prepare_costs", stats.costs);
+ }
+
+#ifdef WITH_JVM
+ /* start the JVM here so that it does not tamper the timing. */
+ if (algo == CO_ALGO_HEUR3)
+ be_java_coal_start_jvm();
+#endif /* WITH_JVM */
+
+ algo_func = algos[algo].algo;
+
+ /* perform actual copy minimization */
+ ir_timer_reset_and_start(timer);
+ was_optimal = algo_func(co);
+ ir_timer_stop(timer);
+
+ be_stat_ev("co_time", ir_timer_elapsed_msec(timer));
+ be_stat_ev_ull("co_optimal", was_optimal);
+
+ if (dump_flags & DUMP_AFTER) {
+ FILE *f = my_open(cenv, "", "-after.dot");
+ co_dump_ifg_dot(co, f, style_flags);
+ fclose(f);
+ }
+
+ co_complete_stats(co, &after);
+
+ if (do_stats) {
+ ulong64 optimizable_costs = after.max_costs - after.inevit_costs;
+ ulong64 evitable = after.costs - after.inevit_costs;
+
+ ir_printf("%30F ", cenv->irg);
+ printf("%10s %10" ULL_FMT "%10" ULL_FMT "%10" ULL_FMT, cenv->cls->name, after.max_costs, before.costs, after.inevit_costs);
+
+ if(optimizable_costs > 0)
+ printf("%10" ULL_FMT " %5.2f\n", after.costs, (evitable * 100.0) / optimizable_costs);
+ else
+ printf("%10" ULL_FMT " %5s\n", after.costs, "-");
+ }
+
+ /* Dump the interference graph in Appel's format. */
+ if (dump_flags & DUMP_APPEL) {
+ FILE *f = my_open(cenv, "", ".apl");
+ fprintf(f, "# %lld %lld\n", after.costs, after.unsatisfied_edges);
+ co_dump_appel_graph(co, f);
+ fclose(f);
+ }
+
+ be_stat_ev_ull("co_after_costs", after.costs);
+ be_stat_ev_ull("co_after_unsat", after.unsatisfied_edges);
+
+ co_free_graph_structure(co);
+ co_free_ou_structure(co);
+ free_copy_opt(co);
+}