-/**
- * @file bechordal_main.c
- * @date 29.11.2005
- * @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.
*
- * Driver for the chordal register allocator.
+ * 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 Driver for the chordal register allocator.
+ * @author Sebastian Hack
+ * @date 29.11.2005
+ * @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
+
+#include <stdlib.h>
+#include <time.h>
#include "obst.h"
#include "pset.h"
#include "bitset.h"
#include "iterator.h"
-#ifdef WITH_LIBCORE
-#include <libcore/lc_opts.h>
-#include <libcore/lc_opts_enum.h>
-#endif /* WITH_LIBCORE */
+#include "lc_opts.h"
+#include "lc_opts_enum.h"
+#include "ircons_t.h"
#include "irmode_t.h"
#include "irgraph_t.h"
#include "irprintf_t.h"
#include "irgwalk.h"
+#include "ircons.h"
#include "irdump.h"
#include "irdom.h"
+#include "ircons.h"
#include "irbitset.h"
+#include "irnode.h"
+#include "ircons.h"
#include "debug.h"
-#include "xmalloc.h"
+#include "execfreq.h"
+#include "iredges_t.h"
+#include "error.h"
#include "bechordal_t.h"
#include "beabi.h"
#include "beutil.h"
#include "besched.h"
-#include "benumb_t.h"
-#include "besched_t.h"
+#include "besched.h"
#include "belive_t.h"
#include "bearch.h"
-#include "beifg_t.h"
-#include "beifg_impl.h"
-
-#include "bespillbelady.h"
+#include "beifg.h"
+#include "benode.h"
+#include "bestatevent.h"
+#include "bestat.h"
+#include "bemodule.h"
+#include "be_t.h"
+#include "bera.h"
+#include "beirg.h"
+#include "bedump_minir.h"
+#include "bestack.h"
+
+#include "bespillslots.h"
+#include "bespill.h"
#include "belower.h"
-#ifdef WITH_ILP
-#include "bespillilp.h"
-#endif /* WITH_ILP */
-
#include "becopystat.h"
#include "becopyopt.h"
#include "bessadestr.h"
+#include "beverify.h"
+#include "benode.h"
-
-void be_ra_chordal_check(be_chordal_env_t *chordal_env) {
- const arch_env_t *arch_env = chordal_env->birg->main_env->arch_env;
- struct obstack ob;
- pmap_entry *pme;
- ir_node **nodes, *n1, *n2;
- int i, o;
- DEBUG_ONLY(firm_dbg_module_t *dbg = chordal_env->dbg;)
-
- /* Collect all irns */
- obstack_init(&ob);
- pmap_foreach(chordal_env->border_heads, pme) {
- border_t *curr;
- struct list_head *head = pme->value;
- list_for_each_entry(border_t, curr, head, list)
- if (curr->is_def && curr->is_real)
- if (arch_get_irn_reg_class(arch_env, curr->irn, -1) == chordal_env->cls)
- obstack_ptr_grow(&ob, curr->irn);
- }
- obstack_ptr_grow(&ob, NULL);
- nodes = (ir_node **) obstack_finish(&ob);
-
- /* Check them */
- for (i = 0, n1 = nodes[i]; n1; n1 = nodes[++i]) {
- const arch_register_t *n1_reg, *n2_reg;
-
- n1_reg = arch_get_irn_register(arch_env, n1);
- if (!arch_reg_is_allocatable(arch_env, n1, -1, n1_reg)) {
- DBG((dbg, 0, "Register %s assigned to %+F is not allowed\n", n1_reg->name, n1));
- assert(0 && "Register constraint does not hold");
- }
- for (o = i+1, n2 = nodes[o]; n2; n2 = nodes[++o]) {
- n2_reg = arch_get_irn_register(arch_env, n2);
- if (values_interfere(n1, n2) && n1_reg == n2_reg) {
- DBG((dbg, 0, "Values %+F and %+F interfere and have the same register assigned\n", n1, n2));
- assert(0 && "Interfering values have the same color!");
- }
- }
- }
- obstack_free(&ob, NULL);
-}
-
-static void check_pressure_walker(ir_node *bl, void *data)
-{
- be_chordal_env_t *env = data;
- int n_regs = arch_register_class_n_regs(env->cls);
- bitset_t *live = bitset_irg_malloc(env->irg);
- int step = 0;
- ir_node *irn;
- bitset_pos_t elm;
- irn_live_t *li;
- DEBUG_ONLY(firm_dbg_module_t *dbg = env->dbg;)
-
- live_foreach(bl, li)
- if(live_is_end(li) && chordal_has_class(env, li->irn))
- bitset_add_irn(live, li->irn);
-
- DBG((dbg, LEVEL_1, "end set for %+F\n", bl));
- bitset_foreach_irn(env->irg, live, elm, irn)
- DBG((dbg, LEVEL_1, "\t%+F\n", irn));
-
- sched_foreach_reverse(bl, irn) {
- int pressure = bitset_popcnt(live);
- int idx = get_irn_idx(irn);
- int i, n;
-
- DBG((dbg, LEVEL_1, "%+10F@%+10F: pressure %d\n", bl, irn, pressure));
-
- if(pressure > n_regs) {
- ir_node *x;
- ir_printf("%+10F@%+10F: pressure to high: %d\n", bl, irn, pressure);
- bitset_foreach_irn(env->irg, live, elm, x)
- ir_fprintf(stderr, "\t%+10F\n", x);
- }
-
- if(chordal_has_class(env, irn)) {
- if(!bitset_is_set(live, idx))
- ir_fprintf(stderr, "%+F is defined but was not live\n", irn);
- bitset_remv_irn(live, irn);
- }
-
- for(i = 0, n = get_irn_arity(irn); i < n; i++) {
- ir_node *op = get_irn_n(irn, i);
- if(chordal_has_class(env, op) && !is_Phi(irn))
- bitset_add_irn(live, op);
- }
- step++;
- }
-}
-
-void be_check_pressure(const be_chordal_env_t *env)
-{
- irg_block_walk_graph(env->irg, check_pressure_walker, NULL, (void *) env);
-}
-
-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(a, b);
-}
-
+#include "bepbqpcoloring.h"
static be_ra_chordal_opts_t options = {
BE_CH_DUMP_NONE,
- BE_CH_SPILL_BELADY,
- BE_CH_COPYMIN_HEUR1,
- BE_CH_IFG_STD,
BE_CH_LOWER_PERM_SWAP,
+ BE_CH_VRFY_WARN,
+ "",
+ ""
};
-#ifdef WITH_LIBCORE
-static const lc_opt_enum_int_items_t spill_items[] = {
- { "belady", BE_CH_SPILL_BELADY },
-#ifdef WITH_ILP
- { "ilp", BE_CH_SPILL_ILP },
-#endif
- { NULL, 0 }
-};
-
-static const lc_opt_enum_int_items_t copymin_items[] = {
- { "none", BE_CH_COPYMIN_NONE },
- { "heur1", BE_CH_COPYMIN_HEUR1 },
- { "heur2", BE_CH_COPYMIN_HEUR2 },
- { "stat", BE_CH_COPYMIN_STAT },
-#ifdef WITH_ILP
- { "ilp1", BE_CH_COPYMIN_ILP1 },
- { "ilp2", BE_CH_COPYMIN_ILP2 },
-#endif
- { NULL, 0 }
-};
-
-static const lc_opt_enum_int_items_t ifg_flavor_items[] = {
- { "std", BE_CH_IFG_STD },
- { "fast", BE_CH_IFG_FAST },
- { NULL, 0 }
-};
+typedef struct post_spill_env_t {
+ be_chordal_env_t cenv;
+ ir_graph *irg;
+ const arch_register_class_t *cls;
+ double pre_spill_cost;
+} post_spill_env_t;
static const lc_opt_enum_int_items_t lower_perm_items[] = {
{ "copy", BE_CH_LOWER_PERM_COPY },
};
static const lc_opt_enum_int_items_t dump_items[] = {
- { "spill", BE_CH_DUMP_SPILL },
- { "live", BE_CH_DUMP_LIVE },
- { "color", BE_CH_DUMP_COLOR },
- { "copymin", BE_CH_DUMP_COPYMIN },
- { "ssadestr", BE_CH_DUMP_SSADESTR },
- { "tree", BE_CH_DUMP_TREE_INTV },
- { "constr", BE_CH_DUMP_CONSTR },
- { "lower", BE_CH_DUMP_LOWER },
+ { "none", BE_CH_DUMP_NONE },
+ { "spill", BE_CH_DUMP_SPILL },
+ { "live", BE_CH_DUMP_LIVE },
+ { "color", BE_CH_DUMP_COLOR },
+ { "copymin", BE_CH_DUMP_COPYMIN },
+ { "ssadestr", BE_CH_DUMP_SSADESTR },
+ { "tree", BE_CH_DUMP_TREE_INTV },
+ { "constr", BE_CH_DUMP_CONSTR },
+ { "lower", BE_CH_DUMP_LOWER },
+ { "spillslots", BE_CH_DUMP_SPILLSLOTS },
+ { "appel", BE_CH_DUMP_APPEL },
+ { "all", BE_CH_DUMP_ALL },
{ NULL, 0 }
};
-static lc_opt_enum_int_var_t spill_var = {
- &options.spill_method, spill_items
-};
-
-static lc_opt_enum_int_var_t copymin_var = {
- &options.copymin_method, copymin_items
-};
-
-static lc_opt_enum_int_var_t ifg_flavor_var = {
- &options.spill_method, ifg_flavor_items
+static const lc_opt_enum_int_items_t be_ch_vrfy_items[] = {
+ { "off", BE_CH_VRFY_OFF },
+ { "warn", BE_CH_VRFY_WARN },
+ { "assert", BE_CH_VRFY_ASSERT },
+ { NULL, 0 }
};
static lc_opt_enum_int_var_t lower_perm_var = {
&options.dump_flags, dump_items
};
+static lc_opt_enum_int_var_t be_ch_vrfy_var = {
+ &options.vrfy_option, be_ch_vrfy_items
+};
+
+static char minir_file[256] = "";
+
static const lc_opt_table_entry_t be_chordal_options[] = {
- LC_OPT_ENT_ENUM_MASK("spill", "spill method (belady or ilp)", &spill_var),
- LC_OPT_ENT_ENUM_PTR ("copymin", "copymin method (none, heur1, heur2, ilp1, ilp2 or stat)", ©min_var),
- LC_OPT_ENT_ENUM_PTR ("ifg", "interference graph flavour (std or fast)", &ifg_flavor_var),
- LC_OPT_ENT_ENUM_MASK("perm", "perm lowering options (copy or swap)", &lower_perm_var),
- LC_OPT_ENT_ENUM_MASK("dump", "select dump phases", &dump_var),
- { NULL }
+ LC_OPT_ENT_ENUM_PTR ("perm", "perm lowering options", &lower_perm_var),
+ LC_OPT_ENT_ENUM_MASK("dump", "select dump phases", &dump_var),
+ LC_OPT_ENT_ENUM_PTR ("verify", "verify options", &be_ch_vrfy_var),
+ LC_OPT_ENT_STR ("minirout", "dump MinIR to file", minir_file, sizeof(minir_file)),
+ LC_OPT_LAST
};
-static void be_ra_chordal_register_options(lc_opt_entry_t *grp)
+static be_module_list_entry_t *colorings = NULL;
+static const be_ra_chordal_coloring_t *selected_coloring = NULL;
+
+void be_register_chordal_coloring(const char *name, be_ra_chordal_coloring_t *coloring)
{
- static int run_once = 0;
- lc_opt_entry_t *chordal_grp;
+ if (selected_coloring == NULL)
+ selected_coloring = coloring;
- if (! run_once) {
- run_once = 1;
- chordal_grp = lc_opt_get_grp(grp, "chordal");
+ be_add_module_to_list(&colorings, name, coloring);
+}
- lc_opt_add_table(chordal_grp, be_chordal_options);
+static void be_ra_chordal_coloring(be_chordal_env_t *env)
+{
+ assert(selected_coloring != NULL);
+ if (selected_coloring != NULL) {
+ selected_coloring->allocate(env);
}
}
-#endif
static void dump(unsigned mask, ir_graph *irg,
const arch_register_class_t *cls,
- const char *suffix,
- void (*dump_func)(ir_graph *, const char *))
+ const char *suffix)
{
- if(1 || ((options.dump_flags & mask) == mask)) {
- if(cls) {
+ if ((options.dump_flags & mask) == mask) {
+ if (cls) {
char buf[256];
- snprintf(buf, sizeof(buf), "-%s%s", cls->name, suffix);
- be_dump(irg, buf, dump_func);
+ snprintf(buf, sizeof(buf), "%s-%s", cls->name, suffix);
+ dump_ir_graph(irg, buf);
+ } else {
+ dump_ir_graph(irg, suffix);
}
+ }
+}
+
+/**
+ * Checks for every reload if its user can perform the load on itself.
+ */
+static void memory_operand_walker(ir_node *irn, void *env)
+{
+ const ir_edge_t *edge, *ne;
+ ir_node *block;
+ ir_node *spill;
+
+ (void)env;
+
+ if (! be_is_Reload(irn))
+ return;
+
+ /* only use memory operands, if the reload is only used by 1 node */
+ if (get_irn_n_edges(irn) > 1)
+ return;
- else
- be_dump(irg, suffix, dump_func);
+ spill = be_get_Reload_mem(irn);
+ block = get_nodes_block(irn);
+
+ foreach_out_edge_safe(irn, edge, ne) {
+ ir_node *src = get_edge_src_irn(edge);
+ int pos = get_edge_src_pos(edge);
+
+ assert(src && "outedges broken!");
+
+ if (get_nodes_block(src) == block && arch_possible_memory_operand(src, pos)) {
+ arch_perform_memory_operand(src, spill, pos);
+ }
+ }
+
+ /* kill the Reload */
+ if (get_irn_n_edges(irn) == 0) {
+ sched_remove(irn);
+ set_irn_n(irn, be_pos_Reload_mem, new_Bad());
+ set_irn_n(irn, be_pos_Reload_frame, new_Bad());
}
}
-static void put_ignore_colors(be_chordal_env_t *chordal_env)
+/**
+ * Starts a walk for memory operands if supported by the backend.
+ */
+void check_for_memory_operands(ir_graph *irg)
{
- int n_colors = chordal_env->cls->n_regs;
- int i;
-
- bitset_clear_all(chordal_env->ignore_colors);
- be_abi_put_ignore_regs(chordal_env->birg->abi, chordal_env->cls, chordal_env->ignore_colors);
- for(i = 0; i < n_colors; ++i)
- if(arch_register_type_is(&chordal_env->cls->regs[i], ignore))
- bitset_set(chordal_env->ignore_colors, i);
+ irg_walk_graph(irg, NULL, memory_operand_walker, NULL);
}
-FILE *be_chordal_open(const be_chordal_env_t *env, const char *prefix, const char *suffix)
+
+static be_node_stats_t last_node_stats;
+
+/**
+ * Perform things which need to be done per register class before spilling.
+ */
+static void pre_spill(post_spill_env_t *pse, const arch_register_class_t *cls)
{
- char buf[1024];
+ be_chordal_env_t *chordal_env = &pse->cenv;
+ ir_graph *irg = pse->irg;
+ ir_exec_freq *exec_freq = be_get_irg_exec_freq(irg);
+
+ pse->cls = cls;
+ chordal_env->cls = cls;
+ chordal_env->border_heads = pmap_create();
+ chordal_env->ignore_colors = bitset_malloc(chordal_env->cls->n_regs);
+
+ be_assure_liveness(irg);
+ be_liveness_assure_chk(be_get_irg_liveness(irg));
+
+ stat_ev_do(pse->pre_spill_cost = be_estimate_irg_costs(irg, exec_freq));
+
+ /* put all ignore registers into the ignore register set. */
+ be_put_ignore_regs(irg, pse->cls, chordal_env->ignore_colors);
+
+ be_timer_push(T_RA_CONSTR);
+ be_pre_spill_prepare_constr(irg, chordal_env->cls);
+ be_timer_pop(T_RA_CONSTR);
- ir_snprintf(buf, sizeof(buf), "%s%F_%s.%s", prefix, env->irg, env->cls->name, suffix);
- return fopen(buf, "wt");
+ dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "constr-pre");
}
-static void be_ra_chordal_main(const be_irg_t *bi)
+/**
+ * Perform things which need to be done per register class after spilling.
+ */
+static void post_spill(post_spill_env_t *pse, int iteration)
{
- const be_main_env_t *main_env = bi->main_env;
- const arch_isa_t *isa = arch_env_get_isa(main_env->arch_env);
- ir_graph *irg = bi->irg;
- copy_opt_t *co;
+ be_chordal_env_t *chordal_env = &pse->cenv;
+ ir_graph *irg = pse->irg;
+ ir_exec_freq *exec_freq = be_get_irg_exec_freq(irg);
+ int colors_n = arch_register_class_n_regs(chordal_env->cls);
+ int allocatable_regs
+ = colors_n - be_put_ignore_regs(irg, chordal_env->cls, NULL);
+
+ /* some special classes contain only ignore regs, no work to be done */
+ if (allocatable_regs > 0) {
+ stat_ev_dbl("bechordal_spillcosts", be_estimate_irg_costs(irg, exec_freq) - pse->pre_spill_cost);
+
+ /*
+ If we have a backend provided spiller, post spill is
+ called in a loop after spilling for each register class.
+ But we only need to fix stack nodes once in this case.
+ */
+ be_timer_push(T_RA_SPILL_APPLY);
+ check_for_memory_operands(irg);
+ if (iteration == 0) {
+ be_abi_fix_stack_nodes(irg);
+ }
+ be_timer_pop(T_RA_SPILL_APPLY);
+
+
+ /* verify schedule and register pressure */
+ be_timer_push(T_VERIFY);
+ if (chordal_env->opts->vrfy_option == BE_CH_VRFY_WARN) {
+ be_verify_schedule(irg);
+ be_verify_register_pressure(irg, pse->cls);
+ } else if (chordal_env->opts->vrfy_option == BE_CH_VRFY_ASSERT) {
+ assert(be_verify_schedule(irg) && "Schedule verification failed");
+ assert(be_verify_register_pressure(irg, pse->cls)
+ && "Register pressure verification failed");
+ }
+ be_timer_pop(T_VERIFY);
- int j, m;
- be_chordal_env_t chordal_env;
+ /* Color the graph. */
+ be_timer_push(T_RA_COLOR);
+ be_ra_chordal_coloring(chordal_env);
+ be_timer_pop(T_RA_COLOR);
- compute_doms(irg);
+ dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "color");
- chordal_env.opts = &options;
- chordal_env.irg = irg;
- chordal_env.birg = bi;
- chordal_env.dom_front = be_compute_dominance_frontiers(irg);
- FIRM_DBG_REGISTER(chordal_env.dbg, "firm.be.chordal");
-
- obstack_init(&chordal_env.obst);
-
- /* Perform the following for each register class. */
- for(j = 0, m = arch_isa_get_n_reg_class(isa); j < m; ++j) {
- chordal_env.cls = arch_isa_get_reg_class(isa, j);
- chordal_env.border_heads = pmap_create();
- chordal_env.ignore_colors = bitset_malloc(chordal_env.cls->n_regs);
-
- /* put all ignore registers into the ignore register set. */
- put_ignore_colors(&chordal_env);
-
- be_liveness(irg);
- dump(BE_CH_DUMP_LIVE, irg, chordal_env.cls, "-live", dump_ir_block_graph_sched);
-
- /* spilling */
- switch(options.spill_method) {
- case BE_CH_SPILL_BELADY:
- be_spill_belady(&chordal_env);
- break;
-#ifdef WITH_ILP
- case BE_CH_SPILL_ILP:
- be_spill_ilp(&chordal_env);
- break;
-#endif /* WITH_ILP */
- default:
- fprintf(stderr, "no valid spiller selected. falling back to belady\n");
- be_spill_belady(&chordal_env);
+ /* Create the ifg with the selected flavor */
+ be_timer_push(T_RA_IFG);
+ chordal_env->ifg = be_create_ifg(chordal_env);
+ be_timer_pop(T_RA_IFG);
+
+ stat_ev_if {
+ be_ifg_stat_t stat;
+ be_node_stats_t node_stats;
+
+ be_ifg_stat(irg, chordal_env->ifg, &stat);
+ stat_ev_dbl("bechordal_ifg_nodes", stat.n_nodes);
+ stat_ev_dbl("bechordal_ifg_edges", stat.n_edges);
+ stat_ev_dbl("bechordal_ifg_comps", stat.n_comps);
+
+ be_collect_node_stats(&node_stats, irg);
+ be_subtract_node_stats(&node_stats, &last_node_stats);
+
+ stat_ev_dbl("bechordal_perms_before_coal",
+ node_stats[BE_STAT_PERMS]);
+ stat_ev_dbl("bechordal_copies_before_coal",
+ node_stats[BE_STAT_COPIES]);
}
- dump(BE_CH_DUMP_SPILL, irg, chordal_env.cls, "-spill", dump_ir_block_graph_sched);
- be_abi_fix_stack_nodes(bi->abi);
- be_liveness(irg);
- be_check_pressure(&chordal_env);
- /* Color the graph. */
- be_ra_chordal_color(&chordal_env);
- dump(BE_CH_DUMP_CONSTR, irg, chordal_env.cls, "-color", dump_ir_block_graph_sched);
-
- /* Build the interference graph. */
- chordal_env.ifg = be_ifg_std_new(&chordal_env);
- be_ifg_check(chordal_env.ifg);
-
- /* copy minimization */
- co = NULL;
- if (options.copymin_method != BE_CH_COPYMIN_NONE && options.copymin_method != BE_CH_COPYMIN_STAT) {
- co = new_copy_opt(&chordal_env, co_get_costs_loop_depth);
- co_build_ou_structure(co);
- co_build_graph_structure(co);
+ be_timer_push(T_RA_COPYMIN);
+ if (minir_file[0] != '\0') {
+ FILE *out;
+
+ if (strcmp(minir_file, "-") == 0) {
+ out = stdout;
+ } else {
+ out = fopen(minir_file, "w");
+ if (out == NULL) {
+ panic("Cound't open minir output '%s'", minir_file);
+ }
+ }
+
+ be_export_minir(out, irg);
+ if (out != stdout)
+ fclose(out);
}
+ co_driver(chordal_env);
+ be_timer_pop(T_RA_COPYMIN);
+
+ dump(BE_CH_DUMP_COPYMIN, irg, pse->cls, "copymin");
+
+ /* ssa destruction */
+ be_timer_push(T_RA_SSA);
+ be_ssa_destruction(chordal_env);
+ be_timer_pop(T_RA_SSA);
+
+ dump(BE_CH_DUMP_SSADESTR, irg, pse->cls, "ssadestr");
- switch(options.copymin_method) {
- case BE_CH_COPYMIN_HEUR1:
- co_solve_heuristic(co);
- break;
- case BE_CH_COPYMIN_HEUR2:
- co_solve_heuristic_new(co);
- break;
- case BE_CH_COPYMIN_PARK_MOON:
- co_solve_park_moon(co);
- break;
- case BE_CH_COPYMIN_STAT:
- co_compare_solvers(&chordal_env);
- break;
-#ifdef WITH_ILP
- case BE_CH_COPYMIN_ILP1:
- printf("FIXME: %s:%d ILP1 not yet implemented!\n", __FILE__, __LINE__);
- co_solve_ilp1(co, 60.0);
- break;
- case BE_CH_COPYMIN_ILP2:
- co_solve_ilp2(co, 60.0);
- break;
-#endif /* WITH_ILP */
- case BE_CH_COPYMIN_NONE:
- default:
- break;
+ if (chordal_env->opts->vrfy_option != BE_CH_VRFY_OFF) {
+ be_timer_push(T_VERIFY);
+ be_ssa_destruction_check(chordal_env);
+ be_timer_pop(T_VERIFY);
}
- if (co) {
- co_free_graph_structure(co);
- co_free_ou_structure(co);
- free_copy_opt(co);
+ /* the ifg exists only if there are allocatable regs */
+ be_ifg_free(chordal_env->ifg);
+ }
+
+ /* free some always allocated data structures */
+ pmap_destroy(chordal_env->border_heads);
+ bitset_free(chordal_env->ignore_colors);
+}
+
+/**
+ * Performs chordal register allocation for each register class on given irg.
+ *
+ * @param irg the graph
+ * @return Structure containing timer for the single phases or NULL if no
+ * timing requested.
+ */
+static void be_ra_chordal_main(ir_graph *irg)
+{
+ const arch_env_t *arch_env = be_get_irg_arch_env(irg);
+ int j;
+ int m;
+ be_chordal_env_t chordal_env;
+ struct obstack obst;
+
+ be_timer_push(T_RA_OTHER);
+
+ be_timer_push(T_RA_PROLOG);
+
+ be_assure_liveness(irg);
+
+ chordal_env.obst = &obst;
+ chordal_env.opts = &options;
+ chordal_env.irg = irg;
+ chordal_env.border_heads = NULL;
+ chordal_env.ifg = NULL;
+ chordal_env.ignore_colors = NULL;
+
+ obstack_init(&obst);
+
+ be_timer_pop(T_RA_PROLOG);
+
+ stat_ev_if {
+ be_collect_node_stats(&last_node_stats, irg);
+ }
+
+ if (! arch_code_generator_has_spiller(be_get_irg_cg(irg))) {
+ /* use one of the generic spiller */
+
+ /* Perform the following for each register class. */
+ for (j = 0, m = arch_env_get_n_reg_class(arch_env); j < m; ++j) {
+ post_spill_env_t pse;
+ const arch_register_class_t *cls
+ = arch_env_get_reg_class(arch_env, j);
+
+ if (arch_register_class_flags(cls) & arch_register_class_flag_manual_ra)
+ continue;
+
+
+ stat_ev_ctx_push_str("bechordal_cls", cls->name);
+
+ stat_ev_if {
+ be_do_stat_reg_pressure(irg, cls);
+ }
+
+ memcpy(&pse.cenv, &chordal_env, sizeof(chordal_env));
+ pse.irg = irg;
+ pre_spill(&pse, cls);
+
+ be_timer_push(T_RA_SPILL);
+ be_do_spill(irg, cls);
+ be_timer_pop(T_RA_SPILL);
+
+ dump(BE_CH_DUMP_SPILL, irg, pse.cls, "spill");
+
+ post_spill(&pse, 0);
+
+ stat_ev_if {
+ be_node_stats_t node_stats;
+
+ be_collect_node_stats(&node_stats, irg);
+ be_subtract_node_stats(&node_stats, &last_node_stats);
+ be_emit_node_stats(&node_stats, "bechordal_");
+
+ be_copy_node_stats(&last_node_stats, &node_stats);
+ stat_ev_ctx_pop("bechordal_cls");
+ }
}
+ } else {
+ post_spill_env_t *pse;
- dump(BE_CH_DUMP_COPYMIN, irg, chordal_env.cls, "-copymin", dump_ir_block_graph_sched);
- be_ra_chordal_check(&chordal_env);
+ /* the backend has its own spiller */
+ m = arch_env_get_n_reg_class(arch_env);
- /* ssa destruction */
- be_ssa_destruction(&chordal_env);
- dump(BE_CH_DUMP_SSADESTR, irg, chordal_env.cls, "-ssadestr", dump_ir_block_graph_sched);
- be_ssa_destruction_check(&chordal_env);
- be_ra_chordal_check(&chordal_env);
+ pse = ALLOCAN(post_spill_env_t, m);
+
+ for (j = 0; j < m; ++j) {
+ memcpy(&pse[j].cenv, &chordal_env, sizeof(chordal_env));
+ pse[j].irg = irg;
+ pre_spill(&pse[j], pse[j].cls);
+ }
- copystat_dump(irg);
+ be_timer_push(T_RA_SPILL);
+ arch_code_generator_spill(be_get_irg_cg(irg), irg);
+ be_timer_pop(T_RA_SPILL);
+ dump(BE_CH_DUMP_SPILL, irg, NULL, "spill");
- be_ifg_free(chordal_env.ifg);
- pmap_destroy(chordal_env.border_heads);
- bitset_free(chordal_env.ignore_colors);
+ for (j = 0; j < m; ++j) {
+ post_spill(&pse[j], j);
+ }
}
- be_compute_spill_offsets(&chordal_env);
+ be_timer_push(T_VERIFY);
+ if (chordal_env.opts->vrfy_option == BE_CH_VRFY_WARN) {
+ be_verify_register_allocation(irg);
+ } else if (chordal_env.opts->vrfy_option == BE_CH_VRFY_ASSERT) {
+ assert(be_verify_register_allocation(irg)
+ && "Register allocation invalid");
+ }
+ be_timer_pop(T_VERIFY);
- dump(BE_CH_DUMP_LOWER, irg, NULL, "-spilloff", dump_ir_block_graph_sched);
+ be_timer_push(T_RA_EPILOG);
+ lower_nodes_after_ra(irg,
+ options.lower_perm_opt&BE_CH_LOWER_PERM_COPY ? 1 : 0);
+ dump(BE_CH_DUMP_LOWER, irg, NULL, "belower-after-ra");
- lower_nodes_after_ra(&chordal_env, options.lower_perm_opt & BE_CH_LOWER_PERM_COPY ? 1 : 0);
- dump(BE_CH_DUMP_LOWER, irg, NULL, "-belower-after-ra", dump_ir_block_graph_sched);
+ obstack_free(&obst, NULL);
+ be_liveness_invalidate(be_get_irg_liveness(irg));
+ be_timer_pop(T_RA_EPILOG);
- obstack_free(&chordal_env.obst, NULL);
- be_free_dominance_frontiers(chordal_env.dom_front);
+ be_timer_pop(T_RA_OTHER);
}
-const be_ra_t be_ra_chordal_allocator = {
-#ifdef WITH_LIBCORE
- be_ra_chordal_register_options,
-#endif
- be_ra_chordal_main
-};
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_chordal_main);
+void be_init_chordal_main(void)
+{
+ static be_ra_t be_ra_chordal_allocator = {
+ be_ra_chordal_main,
+ };
+
+ 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");
+
+ be_register_allocator("chordal", &be_ra_chordal_allocator);
+
+ lc_opt_add_table(chordal_grp, be_chordal_options);
+ be_add_module_list_opt(chordal_grp, "coloring", "select coloring methode", &colorings, (void**) &selected_coloring);
+}
projects / libfirm / blobdiff