2 * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Main Backend driver.
23 * @author Sebastian Hack
34 #include <libcore/lc_opts.h>
35 #include <libcore/lc_opts_enum.h>
36 #include <libcore/lc_timing.h>
47 #include "iredges_t.h"
61 #include "besched_t.h"
62 #include "belistsched.h"
64 #include "bespillbelady.h"
66 #include "bechordal_t.h"
68 #include "beifg_impl.h"
69 #include "becopyopt.h"
70 #include "becopystat.h"
71 #include "bessadestr.h"
74 #include "beschedmris.h"
77 #include "beprofile.h"
78 #include "be_dbgout.h"
82 #include "beilpsched.h"
85 /* options visible for anyone */
86 static be_options_t be_options = {
87 DUMP_NONE, /* dump flags */
88 BE_TIME_OFF, /* no timing */
89 0, /* no opt profile */
90 1, /* try to omit frame pointer */
91 0, /* no stabs debugging output */
92 BE_VRFY_WARN, /* verification level: warn */
93 BE_SCHED_LIST, /* scheduler: list scheduler */
94 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
95 "cplex", /* ilp solver */
96 "", /* filename for statistic output */
100 static char config_file[256] = { 0 };
102 /* back end instruction set architecture to use */
103 static const arch_isa_if_t *isa_if = NULL;
105 /* possible dumping options */
106 static const lc_opt_enum_mask_items_t dump_items[] = {
107 { "none", DUMP_NONE },
108 { "initial", DUMP_INITIAL },
110 { "sched", DUMP_SCHED },
111 { "prepared", DUMP_PREPARED },
112 { "regalloc", DUMP_RA },
113 { "final", DUMP_FINAL },
115 { "all", 2 * DUMP_BE - 1 },
119 /* verify options. */
120 static const lc_opt_enum_int_items_t vrfy_items[] = {
121 { "off", BE_VRFY_OFF },
122 { "warn", BE_VRFY_WARN },
123 { "assert", BE_VRFY_ASSERT },
127 /* scheduling options. */
128 static const lc_opt_enum_int_items_t sched_items[] = {
129 { "list", BE_SCHED_LIST },
131 { "ilp", BE_SCHED_ILP },
132 #endif /* WITH_ILP */
136 static lc_opt_enum_mask_var_t dump_var = {
137 &be_options.dump_flags, dump_items
140 static lc_opt_enum_int_var_t vrfy_var = {
141 &be_options.vrfy_option, vrfy_items
144 static lc_opt_enum_int_var_t sched_var = {
145 &be_options.scheduler, sched_items
148 static const lc_opt_table_entry_t be_main_options[] = {
149 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
150 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
151 LC_OPT_ENT_NEGBOOL ("noomitfp", "do not omit frame pointer", &be_options.omit_fp),
152 LC_OPT_ENT_BOOL ("stabs", "enable stabs debug support", &be_options.stabs_debug_support),
153 LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg", &vrfy_var),
154 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
155 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
156 LC_OPT_ENT_ENUM_PTR ("sched", "select a scheduler", &sched_var),
157 LC_OPT_ENT_STR ("statfile", "append statistics to file statfile", &be_options.stat_file_name, sizeof(be_options.stat_file_name)),
160 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
161 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
162 #endif /* WITH_ILP */
166 static be_module_list_entry_t *isa_ifs = NULL;
168 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
173 be_add_module_to_list(&isa_ifs, name, (void*) isa);
176 void be_opt_register(void)
178 lc_opt_entry_t *be_grp;
179 static int run_once = 0;
188 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
189 lc_opt_add_table(be_grp, be_main_options);
191 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
192 &isa_ifs, (void**) &isa_if);
195 /* Parse one argument. */
196 int be_parse_arg(const char *arg) {
197 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
198 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
199 lc_opt_print_help(be_grp, stdout);
202 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
205 /** The be parameters returned by default, all off. */
206 const static backend_params be_params = {
217 /* Perform schedule verification if requested. */
218 static void be_sched_vrfy(be_irg_t *birg, int vrfy_opt) {
219 if (vrfy_opt == BE_VRFY_WARN) {
220 be_verify_schedule(birg);
222 else if (vrfy_opt == BE_VRFY_ASSERT) {
223 assert(be_verify_schedule(birg) && "Schedule verification failed.");
227 /* Initialize the Firm backend. Must be run BEFORE init_firm()! */
228 const backend_params *be_init(void)
233 if (isa_if->get_params)
234 return isa_if->get_params();
239 * Initializes the main environment for the backend.
241 * @param env an empty environment
242 * @param file_handle the file handle where the output will be written to
244 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
246 memset(env, 0, sizeof(*env));
247 obstack_init(&env->obst);
248 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
249 env->options = &be_options;
251 arch_env_init(env->arch_env, isa_if, file_handle, env);
253 /* Register the irn handler of the architecture */
254 if (arch_isa_get_irn_handler(env->arch_env->isa))
255 arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
258 * Register the node handler of the back end infrastructure.
259 * This irn handler takes care of the platform independent
260 * spill, reload and perm nodes.
262 arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
263 env->phi_handler = be_phi_handler_new(env->arch_env);
264 arch_env_push_irn_handler(env->arch_env, env->phi_handler);
266 env->db_handle = be_options.stabs_debug_support ? be_stabs_open(file_handle) : be_nulldbg_open();
270 static void be_done_env(be_main_env_t *env)
272 env->arch_env->isa->impl->done(env->arch_env->isa);
273 be_dbg_close(env->db_handle);
274 be_phi_handler_free(env->phi_handler);
275 obstack_free(&env->obst, NULL);
279 * A wrapper around a firm dumper. Dumps only, if
282 * @param mask a bitmask containing the reason what will be dumped
283 * @param irg the IR graph to dump
284 * @param suffix the suffix for the dumper
285 * @param dumper the dumper to be called
287 static void dump(int mask, ir_graph *irg, const char *suffix,
288 void (*dumper)(ir_graph *, const char *))
290 if(be_options.dump_flags & mask)
291 be_dump(irg, suffix, dumper);
295 * Prepare a backend graph for code generation and initialize its birg
297 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
299 memset(birg, 0, sizeof(*birg));
301 birg->main_env = env;
303 edges_deactivate_kind(irg, EDGE_KIND_DEP);
304 edges_activate_kind(irg, EDGE_KIND_DEP);
306 dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
308 be_stat_init_irg(env->arch_env, irg);
309 be_do_stat_nodes(irg, "01 Begin");
311 /* set the current graph (this is important for several firm functions) */
312 current_ir_graph = irg;
314 /* Normalize proj nodes. */
315 normalize_proj_nodes(irg);
317 /* create multiple return nodes */
318 /* TODO: find out why this does nothing */
319 normalize_n_returns(irg);
321 /* Remove critical edges */
322 remove_critical_cf_edges(irg);
324 /* Ensure, that the ir_edges are computed. */
327 /* reset the phi handler. */
328 be_phi_handler_reset(env->phi_handler);
330 set_irg_phase_state(irg, phase_backend);
333 #define BE_TIMER_PUSH(timer) \
334 if (be_options.timing == BE_TIME_ON) { \
335 int res = lc_timer_push(timer); \
336 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
337 assert(res && "Timer already on stack, cannot be pushed twice."); \
338 else if (be_options.vrfy_option == BE_VRFY_WARN && ! res) \
339 fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
340 lc_timer_get_name(timer)); \
342 #define BE_TIMER_POP(timer) \
343 if (be_options.timing == BE_TIME_ON) { \
344 lc_timer_t *tmp = lc_timer_pop(); \
345 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
346 assert(tmp == timer && "Attempt to pop wrong timer."); \
347 else if (be_options.vrfy_option == BE_VRFY_WARN && tmp != timer) \
348 fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
349 lc_timer_get_name(tmp), lc_timer_get_name(timer)); \
353 #define BE_TIMER_ONLY(code) do { if (be_options.timing == BE_TIME_ON) { code; } } while(0)
356 * The Firm backend main loop.
357 * Do architecture specific lowering for all graphs
358 * and call the architecture specific code generator.
360 * @param file_handle the file handle the output will be written to
361 * @param cup_name name of the compilation unit
363 static void be_main_loop(FILE *file_handle, const char *cup_name)
368 unsigned num_nodes_b = 0;
369 unsigned num_nodes_a = 0;
370 unsigned num_nodes_r = 0;
371 char prof_filename[256];
372 static const char suffix[] = ".prof";
375 ir_graph **irg_list, **backend_irg_list;
377 lc_timer_t *t_abi = NULL;
378 lc_timer_t *t_codegen = NULL;
379 lc_timer_t *t_sched = NULL;
380 lc_timer_t *t_constr = NULL;
381 lc_timer_t *t_regalloc = NULL;
382 lc_timer_t *t_finish = NULL;
383 lc_timer_t *t_emit = NULL;
384 lc_timer_t *t_other = NULL;
385 lc_timer_t *t_verify = NULL;
387 if (be_options.timing == BE_TIME_ON) {
388 t_abi = lc_timer_register("beabi", "be abi introduction");
389 t_codegen = lc_timer_register("codegen", "codegeneration");
390 t_sched = lc_timer_register("sched", "scheduling");
391 t_constr = lc_timer_register("constr", "assure constraints");
392 t_regalloc = lc_timer_register("regalloc", "register allocation");
393 t_finish = lc_timer_register("finish", "graph finish");
394 t_emit = lc_timer_register("emiter", "code emiter");
395 t_verify = lc_timer_register("verify", "graph verification");
396 t_other = lc_timer_register("other", "other");
399 be_init_env(&env, file_handle);
401 isa = arch_env_get_isa(env.arch_env);
403 be_dbg_so(env.db_handle, cup_name);
404 be_dbg_types(env.db_handle);
406 /* backend may provide an ordered list of irgs where code should be generated for */
407 irg_list = NEW_ARR_F(ir_graph *, 0);
408 backend_irg_list = arch_isa_get_backend_irg_list(isa, &irg_list);
410 /* we might need 1 birg more for instrumentation constructor */
411 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
412 birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
414 /* First: initialize all birgs */
415 for(i = 0; i < num_birgs; ++i) {
416 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
417 initialize_birg(&birgs[i], irg, &env);
422 Get the filename for the profiling data.
423 Beware: '\0' is already included in sizeof(suffix)
425 memset(prof_filename, 0, sizeof(prof_filename));
426 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
427 strcat(prof_filename, suffix);
430 Next: Either instruments all irgs with profiling code
431 or try to read in profile data for current translation unit.
433 if (be_options.opt_profile) {
434 ir_graph *prof_init_irg = be_profile_instrument(prof_filename, profile_default);
435 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
437 set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
439 be_profile_read(prof_filename);
443 for (i = 0; i < num_birgs; ++i) {
444 be_irg_t *birg = &birgs[i];
445 ir_graph *irg = birg->irg;
446 optimization_state_t state;
447 const arch_code_generator_if_t *cg_if;
450 /* set the current graph (this is important for several firm functions) */
451 current_ir_graph = irg;
453 #ifdef FIRM_STATISTICS
454 if(be_stat_ev_is_active()) {
455 ir_snprintf(irg_name, sizeof(irg_name), "%F", irg);
456 be_stat_tags[STAT_TAG_CLS] = "<all>";
457 be_stat_tags[STAT_TAG_IRG] = irg_name;
458 be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
462 /* stop and reset timers */
464 LC_STOP_AND_RESET_TIMER(t_abi);
465 LC_STOP_AND_RESET_TIMER(t_codegen);
466 LC_STOP_AND_RESET_TIMER(t_sched);
467 LC_STOP_AND_RESET_TIMER(t_constr);
468 LC_STOP_AND_RESET_TIMER(t_regalloc);
469 LC_STOP_AND_RESET_TIMER(t_finish);
470 LC_STOP_AND_RESET_TIMER(t_emit);
471 LC_STOP_AND_RESET_TIMER(t_verify);
472 LC_STOP_AND_RESET_TIMER(t_other);
474 BE_TIMER_PUSH(t_other); /* t_other */
476 /* Verify the initial graph */
477 BE_TIMER_PUSH(t_verify);
478 if (be_options.vrfy_option == BE_VRFY_WARN) {
479 irg_verify(irg, VRFY_ENFORCE_SSA);
480 be_check_dominance(irg);
481 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
482 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
483 assert(be_check_dominance(irg) && "Dominance verification failed");
485 BE_TIMER_POP(t_verify);
487 BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
489 /* Get the code generator interface. */
490 cg_if = isa->impl->get_code_generator_if(isa);
492 /* get a code generator for this graph. */
493 birg->cg = cg_if->init(birg);
495 /* some transformations need to be done before abi introduce */
496 arch_code_generator_before_abi(birg->cg);
498 /* reset the phi handler. */
499 be_phi_handler_reset(env.phi_handler);
501 /* implement the ABI conventions. */
502 BE_TIMER_PUSH(t_abi);
503 birg->abi = be_abi_introduce(birg);
506 dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
507 be_do_stat_nodes(irg, "02 Abi");
509 if (be_options.vrfy_option == BE_VRFY_WARN) {
510 be_check_dominance(irg);
511 be_verify_out_edges(irg);
512 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
513 assert(be_verify_out_edges(irg));
514 assert(be_check_dominance(irg) && "Dominance verification failed");
518 BE_TIMER_PUSH(t_codegen);
519 arch_code_generator_prepare_graph(birg->cg);
520 BE_TIMER_POP(t_codegen);
522 be_do_stat_nodes(irg, "03 Prepare");
524 dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
525 BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
527 if (be_options.vrfy_option == BE_VRFY_WARN) {
528 be_check_dominance(irg);
529 be_verify_out_edges(irg);
530 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
531 assert(be_verify_out_edges(irg));
532 assert(be_check_dominance(irg) && "Dominance verification failed");
536 * Create execution frequencies from profile data or estimate some
538 if (be_profile_has_data())
539 birg->exec_freq = be_create_execfreqs_from_profile(irg);
541 birg->exec_freq = compute_execfreq(irg, 10);
544 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
545 /* be_live_chk_compare(birg); */
547 /* let backend prepare scheduling */
548 BE_TIMER_PUSH(t_codegen);
549 arch_code_generator_before_sched(birg->cg);
550 BE_TIMER_POP(t_codegen);
552 /* schedule the irg */
553 BE_TIMER_PUSH(t_sched);
554 switch (be_options.scheduler) {
556 fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
558 list_sched(birg, &be_options);
562 be_ilp_sched(birg, &be_options);
564 #endif /* WITH_ILP */
566 BE_TIMER_POP(t_sched);
568 dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
571 BE_TIMER_PUSH(t_verify);
572 be_sched_vrfy(birg, be_options.vrfy_option);
573 BE_TIMER_POP(t_verify);
575 be_do_stat_nodes(irg, "04 Schedule");
577 /* introduce patterns to assure constraints */
578 BE_TIMER_PUSH(t_constr);
579 /* we switch off optimizations here, because they might cause trouble */
580 save_optimization_state(&state);
582 set_opt_normalize(0);
584 /* add Keeps for should_be_different constrained nodes */
585 /* beware: needs schedule due to usage of be_ssa_constr */
586 assure_constraints(birg);
587 BE_TIMER_POP(t_constr);
589 dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
590 be_do_stat_nodes(irg, "05 Constraints");
592 /* stuff needs to be done after scheduling but before register allocation */
593 BE_TIMER_PUSH(t_codegen);
594 arch_code_generator_before_ra(birg->cg);
595 BE_TIMER_POP(t_codegen);
597 /* connect all stack modifying nodes together (see beabi.c) */
598 BE_TIMER_PUSH(t_abi);
599 be_abi_fix_stack_nodes(birg->abi);
602 dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
605 BE_TIMER_PUSH(t_verify);
606 be_sched_vrfy(birg, be_options.vrfy_option);
607 BE_TIMER_POP(t_verify);
609 /* do some statistics */
610 be_do_stat_reg_pressure(birg);
612 #ifdef FIRM_STATISTICS
613 if(be_stat_ev_is_active()) {
614 be_stat_ev_l("costs_before_ra",
615 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
619 /* Do register allocation */
620 BE_TIMER_PUSH(t_regalloc);
621 be_allocate_registers(birg);
622 BE_TIMER_POP(t_regalloc);
624 #ifdef FIRM_STATISTICS
625 if(be_stat_ev_is_active()) {
626 be_stat_ev_l("costs_after_ra",
627 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
631 dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
632 be_do_stat_nodes(irg, "06 Register Allocation");
634 /* let the code generator prepare the graph for emitter */
635 BE_TIMER_PUSH(t_finish);
636 arch_code_generator_after_ra(birg->cg);
637 BE_TIMER_POP(t_finish);
639 /* fix stack offsets */
640 BE_TIMER_PUSH(t_abi);
641 be_abi_fix_stack_nodes(birg->abi);
642 be_remove_dead_nodes_from_schedule(irg);
643 be_abi_fix_stack_bias(birg->abi);
646 dump(DUMP_SCHED, irg, "-fix_stack_after_ra", dump_ir_block_graph_sched);
648 BE_TIMER_PUSH(t_finish);
649 arch_code_generator_finish(birg->cg);
650 BE_TIMER_POP(t_finish);
652 dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
654 /* check schedule and register allocation */
655 BE_TIMER_PUSH(t_verify);
656 if (be_options.vrfy_option == BE_VRFY_WARN) {
657 irg_verify(irg, VRFY_ENFORCE_SSA);
658 be_check_dominance(irg);
659 be_verify_out_edges(irg);
660 be_verify_schedule(birg);
661 be_verify_register_allocation(env.arch_env, irg);
662 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
663 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
664 assert(be_verify_out_edges(irg) && "out edge verification failed");
665 assert(be_check_dominance(irg) && "Dominance verification failed");
666 assert(be_verify_schedule(birg) && "Schedule verification failed");
667 assert(be_verify_register_allocation(env.arch_env, irg)
668 && "register allocation verification failed");
671 BE_TIMER_POP(t_verify);
673 /* emit assembler code */
674 BE_TIMER_PUSH(t_emit);
675 arch_code_generator_done(birg->cg);
676 BE_TIMER_POP(t_emit);
678 dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
680 BE_TIMER_PUSH(t_abi);
681 be_abi_free(birg->abi);
684 be_do_stat_nodes(irg, "07 Final");
685 restore_optimization_state(&state);
687 BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(irg));
688 BE_TIMER_POP(t_other);
690 #define LC_EMIT(timer) \
691 if(!be_stat_ev_is_active()) { \
692 printf("%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
694 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
696 #define LC_EMIT_RA(timer) \
697 if(!be_stat_ev_is_active()) { \
698 printf("\t%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
700 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
703 if(!be_stat_ev_is_active()) {
704 printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
705 printf("# nodes at begin: %u\n", num_nodes_b);
706 printf("# nodes before ra: %u\n", num_nodes_r);
707 printf("# nodes at end: %u\n\n", num_nodes_a);
714 if(global_ra_timer != NULL) {
715 LC_EMIT_RA(global_ra_timer->t_prolog);
716 LC_EMIT_RA(global_ra_timer->t_live);
717 LC_EMIT_RA(global_ra_timer->t_spill);
718 LC_EMIT_RA(global_ra_timer->t_spillslots);
719 LC_EMIT_RA(global_ra_timer->t_color);
720 LC_EMIT_RA(global_ra_timer->t_ifg);
721 LC_EMIT_RA(global_ra_timer->t_copymin);
722 LC_EMIT_RA(global_ra_timer->t_ssa);
723 LC_EMIT_RA(global_ra_timer->t_epilog);
724 LC_EMIT_RA(global_ra_timer->t_verify);
725 LC_EMIT_RA(global_ra_timer->t_other);
737 /* switched off due to statistics (statistic module needs all irgs) */
738 #if 0 /* STA needs irgs */
739 #ifdef FIRM_STATISTICS
740 if (! stat_is_active())
741 #endif /* FIRM_STATISTICS */
744 if(be_stat_ev_is_active()) {
756 /* Main interface to the frontend. */
757 void be_main(FILE *file_handle, const char *cup_name)
759 lc_timer_t *t = NULL;
761 /* The user specified another config file to read. do that now. */
762 if(strlen(config_file) > 0) {
765 if((f = fopen(config_file, "rt")) != NULL) {
766 lc_opt_from_file(config_file, f, NULL);
771 if (be_options.timing == BE_TIME_ON) {
772 t = lc_timer_register("bemain", "measure complete bemain loop");
774 if (lc_timer_enter_high_priority()) {
775 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
778 lc_timer_reset_and_start(t);
781 #ifdef FIRM_STATISTICS
782 be_init_stat_file(be_options.stat_file_name, cup_name);
785 /* never build code for pseudo irgs */
786 set_visit_pseudo_irgs(0);
790 be_main_loop(file_handle, cup_name);
792 if (be_options.timing == BE_TIME_ON) {
794 lc_timer_leave_high_priority();
795 if(be_stat_ev_is_active()) {
796 be_stat_ev_l("backend_time", lc_timer_elapsed_msec(t));
798 printf("%-20s: %lu msec\n", "BEMAINLOOP", lc_timer_elapsed_msec(t));
802 #ifdef FIRM_STATISTICS
803 be_close_stat_file();
807 /** The debug info retriever function. */
808 static retrieve_dbg_func retrieve_dbg = NULL;
810 /* Sets a debug info retriever. */
811 void be_set_debug_retrieve(retrieve_dbg_func func) {
815 /* Retrieve the debug info. */
816 const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
818 return retrieve_dbg(dbg, line);
824 unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
827 bs = bitset_alloca(cls->n_regs);
829 bitset_clear_all(bs);
831 assert(bitset_size(bs) == (unsigned)cls->n_regs);
832 arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
834 be_abi_put_ignore_regs(birg->abi, cls, bs);
836 return bitset_popcnt(bs);