static int be_elr_split = 0;
typedef struct _post_spill_env_t {
- be_chordal_env_t cenv;
- double pre_spill_cost;
+ be_chordal_env_t cenv;
+ be_irg_t *birg;
+ const arch_register_class_t *cls;
+ double pre_spill_cost;
} post_spill_env_t;
static be_ra_timer_t ra_timer = {
};
static const lc_opt_enum_int_items_t dump_items[] = {
+ { "none", BE_CH_DUMP_NONE },
{ "spill", BE_CH_DUMP_SPILL },
{ "live", BE_CH_DUMP_LIVE },
{ "color", BE_CH_DUMP_COLOR },
}
}
-static void put_ignore_colors(be_chordal_env_t *chordal_env)
-{
- 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);
-}
-
/**
* Checks for every reload if it's user can perform the load on itself.
*/
} node_stat_t;
struct node_stat_walker {
- node_stat_t *stat;
- const be_chordal_env_t *cenv;
- bitset_t *mem_phis;
+ node_stat_t *stat;
+ const arch_env_t *arch_env;
+ bitset_t *mem_phis;
+ const arch_register_class_t *cls;
};
static void node_stat_walker(ir_node *irn, void *data)
{
- struct node_stat_walker *env = data;
- const arch_env_t *aenv = env->cenv->birg->main_env->arch_env;
+ struct node_stat_walker *env = data;
+ const arch_env_t *aenv = env->arch_env;
- if(arch_irn_consider_in_reg_alloc(aenv, env->cenv->cls, irn)) {
+ if (arch_irn_consider_in_reg_alloc(aenv, env->cls, irn)) {
/* if the node is a normal phi */
if(is_Phi(irn))
}
}
-static void node_stats(const be_chordal_env_t *cenv, node_stat_t *stat)
+static void node_stats(be_irg_t *birg, const arch_register_class_t *cls, node_stat_t *stat)
{
struct node_stat_walker env;
memset(stat, 0, sizeof(stat[0]));
- env.cenv = cenv;
- env.mem_phis = bitset_irg_malloc(cenv->irg);
+ env.arch_env = birg->main_env->arch_env;
+ env.mem_phis = bitset_irg_malloc(birg->irg);
env.stat = stat;
- irg_walk_graph(cenv->irg, NULL, node_stat_walker, &env);
+ env.cls = cls;
+ irg_walk_graph(birg->irg, NULL, node_stat_walker, &env);
bitset_free(env.mem_phis);
}
*/
static void pre_spill(const arch_isa_t *isa, int cls_idx, post_spill_env_t *pse) {
be_chordal_env_t *chordal_env = &pse->cenv;
+ be_irg_t *birg = pse->birg;
node_stat_t node_stat;
- chordal_env->cls = arch_isa_get_reg_class(isa, cls_idx);
+ pse->cls = arch_isa_get_reg_class(isa, cls_idx);
+ chordal_env->cls = pse->cls;
chordal_env->border_heads = pmap_create();
chordal_env->ignore_colors = bitset_malloc(chordal_env->cls->n_regs);
#ifdef FIRM_STATISTICS
if (be_stat_ev_is_active()) {
- be_stat_tags[STAT_TAG_CLS] = chordal_env->cls->name;
+ be_stat_tags[STAT_TAG_CLS] = pse->cls->name;
be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
/* perform some node statistics. */
- node_stats(chordal_env, &node_stat);
+ node_stats(birg, pse->cls, &node_stat);
be_stat_ev("phis_before_spill", node_stat.n_phis);
}
#endif /* FIRM_STATISTICS */
/* put all ignore registers into the ignore register set. */
- put_ignore_colors(chordal_env);
+ be_put_ignore_regs(birg, pse->cls, chordal_env->ignore_colors);
be_pre_spill_prepare_constr(chordal_env);
- dump(BE_CH_DUMP_CONSTR, chordal_env->irg, chordal_env->cls, "-constr-pre", dump_ir_block_graph_sched);
+ dump(BE_CH_DUMP_CONSTR, birg->irg, pse->cls, "-constr-pre", dump_ir_block_graph_sched);
#ifdef FIRM_STATISTICS
if (be_stat_ev_is_active()) {
- pse->pre_spill_cost = be_estimate_irg_costs(chordal_env->irg,
- chordal_env->birg->main_env->arch_env, chordal_env->birg->exec_freq);
+ pse->pre_spill_cost = be_estimate_irg_costs(birg->irg,
+ birg->main_env->arch_env, birg->exec_freq);
}
#endif /* FIRM_STATISTICS */
}
/**
* Perform things which need to be done per register class after spilling.
*/
-static void post_spill(post_spill_env_t *pse) {
+static void post_spill(post_spill_env_t *pse, int iteration) {
be_chordal_env_t *chordal_env = &pse->cenv;
- ir_graph *irg = chordal_env->irg;
- be_irg_t *birg = chordal_env->birg;
+ be_irg_t *birg = pse->birg;
+ ir_graph *irg = birg->irg;
const be_main_env_t *main_env = birg->main_env;
be_options_t *main_opts = main_env->options;
static int splitted = 0;
be_stat_ev_l("spillcosts", (long) spillcosts);
- node_stats(chordal_env, &node_stat);
+ node_stats(birg, pse->cls, &node_stat);
be_stat_ev("phis_after_spill", node_stat.n_phis);
be_stat_ev("mem_phis", node_stat.n_mem_phis);
be_stat_ev("reloads", node_stat.n_reloads);
}
#endif /* FIRM_STATISTICS */
- check_for_memory_operands(chordal_env);
-
- be_abi_fix_stack_nodes(birg->abi, birg->lv);
+ /*
+ 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.
+ */
+ if (iteration == 0) {
+ check_for_memory_operands(chordal_env);
+ be_abi_fix_stack_nodes(birg->abi, birg->lv);
+ }
BE_TIMER_PUSH(ra_timer.t_verify);
/* verify schedule and register pressure */
if (chordal_env->opts->vrfy_option == BE_CH_VRFY_WARN) {
be_verify_schedule(irg);
- be_verify_register_pressure(chordal_env->birg, chordal_env->cls, irg);
+ be_verify_register_pressure(birg, pse->cls, irg);
}
else if (chordal_env->opts->vrfy_option == BE_CH_VRFY_ASSERT) {
assert(be_verify_schedule(irg) && "Schedule verification failed");
- assert(be_verify_register_pressure(chordal_env->birg, chordal_env->cls, irg)
+ assert(be_verify_register_pressure(birg, pse->cls, irg)
&& "Register pressure verification failed");
}
BE_TIMER_POP(ra_timer.t_verify);
be_ra_chordal_color(chordal_env);
BE_TIMER_POP(ra_timer.t_color);
- dump(BE_CH_DUMP_CONSTR, irg, chordal_env->cls, "-color", dump_ir_block_graph_sched);
+ dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "-color", dump_ir_block_graph_sched);
/* Create the ifg with the selected flavor */
BE_TIMER_PUSH(ra_timer.t_ifg);
#ifdef FIRM_STATISTICS
if (be_stat_ev_is_active()) {
be_ifg_stat_t stat;
- be_ifg_stat(chordal_env, &stat);
+
+ be_ifg_stat(birg, chordal_env->ifg, &stat);
be_stat_ev("ifg_nodes", stat.n_nodes);
be_stat_ev("ifg_edges", stat.n_edges);
be_stat_ev("ifg_comps", stat.n_comps);
- node_stats(chordal_env, &node_stat);
+ node_stats(birg, pse->cls, &node_stat);
be_stat_ev("perms_before_coal", node_stat.n_perms);
be_stat_ev("copies_before_coal", node_stat.n_copies);
}
co_driver(chordal_env);
BE_TIMER_POP(ra_timer.t_copymin);
- dump(BE_CH_DUMP_COPYMIN, irg, chordal_env->cls, "-copymin", dump_ir_block_graph_sched);
+ dump(BE_CH_DUMP_COPYMIN, irg, pse->cls, "-copymin", dump_ir_block_graph_sched);
BE_TIMER_PUSH(ra_timer.t_ssa);
BE_TIMER_POP(ra_timer.t_ssa);
- dump(BE_CH_DUMP_SSADESTR, irg, chordal_env->cls, "-ssadestr", dump_ir_block_graph_sched);
+ dump(BE_CH_DUMP_SSADESTR, irg, pse->cls, "-ssadestr", dump_ir_block_graph_sched);
BE_TIMER_PUSH(ra_timer.t_verify);
if (chordal_env->opts->vrfy_option != BE_CH_VRFY_OFF) {
}
BE_TIMER_POP(ra_timer.t_verify);
+ /* free some data structures */
be_ifg_free(chordal_env->ifg);
pmap_destroy(chordal_env->border_heads);
bitset_free(chordal_env->ignore_colors);
#ifdef FIRM_STATISTICS
if (be_stat_ev_is_active()) {
- node_stats(chordal_env, &node_stat);
+ node_stats(birg, pse->cls, &node_stat);
be_stat_ev("perms_after_coal", node_stat.n_perms);
be_stat_ev("copies_after_coal", node_stat.n_copies);
be_stat_ev_pop();
post_spill_env_t pse;
memcpy(&pse.cenv, &chordal_env, sizeof(chordal_env));
+ pse.birg = birg;
pre_spill(isa, j, &pse);
BE_TIMER_PUSH(ra_timer.t_spill);
be_do_spill(&pse.cenv);
BE_TIMER_POP(ra_timer.t_spill);
- dump(BE_CH_DUMP_SPILL, irg, pse.cenv.cls, "-spill", dump_ir_block_graph_sched);
+ dump(BE_CH_DUMP_SPILL, irg, pse.cls, "-spill", dump_ir_block_graph_sched);
- post_spill(&pse);
+ post_spill(&pse, 0);
}
}
else {
for (j = 0; j < m; ++j) {
memcpy(&pse[j].cenv, &chordal_env, sizeof(chordal_env));
+ pse[j].birg = birg;
pre_spill(isa, j, &pse[j]);
}
BE_TIMER_PUSH(ra_timer.t_spill);
- arch_code_generator_spill(birg->cg, &chordal_env);
+ arch_code_generator_spill(birg->cg, birg);
BE_TIMER_POP(ra_timer.t_spill);
dump(BE_CH_DUMP_SPILL, irg, NULL, "-spill", dump_ir_block_graph_sched);
for (j = 0; j < m; ++j) {
- post_spill(&pse[j]);
+ post_spill(&pse[j], j);
}
}
BE_TIMER_PUSH(ra_timer.t_epilog);
dump(BE_CH_DUMP_LOWER, irg, NULL, "-spilloff", dump_ir_block_graph_sched);
- lower_nodes_after_ra(&chordal_env, options.lower_perm_opt & BE_CH_LOWER_PERM_COPY ? 1 : 0);
+ lower_nodes_after_ra(birg, 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(&chordal_env.obst, NULL);
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