* @brief Driver for the chordal register allocator.
* @author Sebastian Hack
* @date 29.11.2005
- * @version $Id$
*/
#include "config.h"
#include "pset.h"
#include "list.h"
#include "bitset.h"
-#include "iterator.h"
#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 "irprintf.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 "irtools.h"
#include "debug.h"
#include "execfreq.h"
#include "iredges_t.h"
#include "bearch.h"
#include "beifg.h"
#include "benode.h"
-#include "bestatevent.h"
+#include "statev_t.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"
static be_ra_chordal_opts_t options = {
BE_CH_DUMP_NONE,
BE_CH_LOWER_PERM_SWAP,
- BE_CH_VRFY_WARN,
- "",
- ""
+ BE_CH_VRFY_WARN
};
-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 },
{ "swap", BE_CH_LOWER_PERM_SWAP },
{ NULL, 0 }
};
-static const lc_opt_enum_int_items_t lower_perm_stat_items[] = {
- { NULL, 0 }
-};
-
-static const lc_opt_enum_int_items_t dump_items[] = {
+static const lc_opt_enum_mask_items_t dump_items[] = {
{ "none", BE_CH_DUMP_NONE },
{ "spill", BE_CH_DUMP_SPILL },
{ "live", BE_CH_DUMP_LIVE },
{ "copymin", BE_CH_DUMP_COPYMIN },
{ "ssadestr", BE_CH_DUMP_SSADESTR },
{ "tree", BE_CH_DUMP_TREE_INTV },
+ { "split", BE_CH_DUMP_SPLIT },
{ "constr", BE_CH_DUMP_CONSTR },
{ "lower", BE_CH_DUMP_LOWER },
{ "spillslots", BE_CH_DUMP_SPILLSLOTS },
&options.lower_perm_opt, lower_perm_items
};
-static lc_opt_enum_int_var_t dump_var = {
+static lc_opt_enum_mask_var_t dump_var = {
&options.dump_flags, dump_items
};
&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_PTR ("perm", "perm lowering options", &lower_perm_var),
+ LC_OPT_ENT_ENUM_INT ("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_ENT_ENUM_INT ("verify", "verify options", &be_ch_vrfy_var),
LC_OPT_LAST
};
static void be_ra_chordal_coloring(be_chordal_env_t *env)
{
- assert(selected_coloring != NULL);
- if (selected_coloring != NULL) {
- selected_coloring->allocate(env);
- }
+ selected_coloring->allocate(env);
}
static void dump(unsigned mask, ir_graph *irg,
}
/**
- * Checks for every reload if its user can perform the load on itself.
+ * Post-Walker: Checks for the given reload if has only one user that can perform the
+ * reload as part of its address mode.
+ * Fold the reload into the user it that is possible.
*/
static void memory_operand_walker(ir_node *irn, void *env)
{
- const ir_edge_t *edge, *ne;
- ir_node *block;
- ir_node *spill;
+ ir_node *block;
+ ir_node *spill;
(void)env;
spill = be_get_Reload_mem(irn);
block = get_nodes_block(irn);
- foreach_out_edge_safe(irn, edge, ne) {
+ foreach_out_edge_safe(irn, edge) {
ir_node *src = get_edge_src_irn(edge);
int pos = get_edge_src_pos(edge);
}
}
- /* kill the Reload */
+ /* kill the Reload if it was folded */
if (get_irn_n_edges(irn) == 0) {
+ ir_graph *irg = get_irn_irg(irn);
+ ir_mode *frame_mode = get_irn_mode(get_irn_n(irn, n_be_Reload_frame));
sched_remove(irn);
- set_irn_n(irn, be_pos_Reload_mem, new_Bad());
- set_irn_n(irn, be_pos_Reload_frame, new_Bad());
+ set_irn_n(irn, n_be_Reload_mem, new_r_Bad(irg, mode_X));
+ set_irn_n(irn, n_be_Reload_frame, new_r_Bad(irg, frame_mode));
}
}
/**
* 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)
+static void pre_spill(be_chordal_env_t *const chordal_env, arch_register_class_t const *const cls, ir_graph *const irg)
{
- 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);
+ chordal_env->cls = cls;
+ chordal_env->border_heads = pmap_create();
+ chordal_env->allocatable_regs = 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));
+ be_assure_live_chk(irg);
/* put all ignore registers into the ignore register set. */
- be_put_ignore_regs(irg, pse->cls, chordal_env->ignore_colors);
+ be_put_allocatable_regs(irg, cls, chordal_env->allocatable_regs);
be_timer_push(T_RA_CONSTR);
be_pre_spill_prepare_constr(irg, chordal_env->cls);
be_timer_pop(T_RA_CONSTR);
- dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "constr-pre");
+ dump(BE_CH_DUMP_CONSTR, irg, cls, "constr-pre");
}
/**
* Perform things which need to be done per register class after spilling.
*/
-static void post_spill(post_spill_env_t *pse, int iteration)
+static void post_spill(be_chordal_env_t *const chordal_env, ir_graph *const irg)
{
- 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 */
+ int const allocatable_regs = be_get_n_allocatable_regs(irg, chordal_env->cls);
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.
*/
be_timer_push(T_RA_SPILL_APPLY);
check_for_memory_operands(irg);
- if (iteration == 0) {
- be_abi_fix_stack_nodes(irg);
- }
+ be_abi_fix_stack_nodes(irg);
be_timer_pop(T_RA_SPILL_APPLY);
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);
+ be_verify_register_pressure(irg, chordal_env->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)
+ assert(be_verify_register_pressure(irg, chordal_env->cls)
&& "Register pressure verification failed");
}
be_timer_pop(T_VERIFY);
be_ra_chordal_coloring(chordal_env);
be_timer_pop(T_RA_COLOR);
- dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "color");
+ dump(BE_CH_DUMP_CONSTR, irg, chordal_env->cls, "color");
/* 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 {
+ if (stat_ev_enabled) {
be_ifg_stat_t stat;
be_node_stats_t node_stats;
}
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");
+ dump(BE_CH_DUMP_COPYMIN, irg, chordal_env->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");
+ dump(BE_CH_DUMP_SSADESTR, irg, chordal_env->cls, "ssadestr");
if (chordal_env->opts->vrfy_option != BE_CH_VRFY_OFF) {
be_timer_push(T_VERIFY);
/* free some always allocated data structures */
pmap_destroy(chordal_env->border_heads);
- bitset_free(chordal_env->ignore_colors);
+ bitset_free(chordal_env->allocatable_regs);
}
/**
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);
+ be_chordal_env_t chordal_env;
+ obstack_init(&chordal_env.obst);
+ chordal_env.opts = &options;
+ chordal_env.irg = irg;
+ chordal_env.border_heads = NULL;
+ chordal_env.ifg = NULL;
+ chordal_env.allocatable_regs = NULL;
- 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 {
+ if (stat_ev_enabled) {
be_collect_node_stats(&last_node_stats, 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);
+ for (j = 0, m = arch_env->n_register_classes; j < m; ++j) {
+ const arch_register_class_t *cls = &arch_env->register_classes[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 {
+ double pre_spill_cost = 0;
+ if (stat_ev_enabled) {
be_do_stat_reg_pressure(irg, cls);
+ pre_spill_cost = be_estimate_irg_costs(irg);
}
- memcpy(&pse.cenv, &chordal_env, sizeof(chordal_env));
- pse.irg = irg;
- pre_spill(&pse, cls);
+ pre_spill(&chordal_env, cls, irg);
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");
+ dump(BE_CH_DUMP_SPILL, irg, cls, "spill");
+
+ stat_ev_dbl("bechordal_spillcosts", be_estimate_irg_costs(irg) - pre_spill_cost);
- post_spill(&pse, 0);
+ post_spill(&chordal_env, irg);
- stat_ev_if {
+ if (stat_ev_enabled) {
be_node_stats_t node_stats;
be_collect_node_stats(&node_stats, irg);
be_timer_pop(T_VERIFY);
be_timer_push(T_RA_EPILOG);
- lower_nodes_after_ra(irg,
- options.lower_perm_opt&BE_CH_LOWER_PERM_COPY ? 1 : 0);
+ lower_nodes_after_ra(irg, options.lower_perm_opt == BE_CH_LOWER_PERM_COPY);
dump(BE_CH_DUMP_LOWER, irg, NULL, "belower-after-ra");
- obstack_free(&obst, NULL);
- be_liveness_invalidate(be_get_irg_liveness(irg));
+ obstack_free(&chordal_env.obst, NULL);
+ be_invalidate_live_sets(irg);
be_timer_pop(T_RA_EPILOG);
be_timer_pop(T_RA_OTHER);
}
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_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_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);
+ be_add_module_list_opt(chordal_grp, "coloring", "select coloring method", &colorings, (void**) &selected_coloring);
}
projects / libfirm / blobdiff