3 * @author Sebastian Hack
15 #include <libcore/lc_opts.h>
16 #include <libcore/lc_opts_enum.h>
17 #include <libcore/lc_timing.h>
18 #endif /* WITH_LIBCORE */
29 #include "iredges_t.h"
45 #include "besched_t.h"
46 #include "belistsched.h"
48 #include "bespillbelady.h"
50 #include "beraextern.h"
51 #include "bechordal_t.h"
53 #include "beifg_impl.h"
54 #include "becopyopt.h"
55 #include "becopystat.h"
56 #include "bessadestr.h"
59 #include "beschedmris.h"
62 #include "beprofile.h"
63 #include "be_dbgout.h"
66 #include "beilpsched.h"
69 /* options visible for anyone */
70 static be_options_t be_options = {
71 DUMP_NONE, /* dump flags */
72 BE_TIME_OFF, /* no timing */
73 0, /* no opt profile */
74 1, /* try to omit frame pointer */
75 0, /* always stabs debugging output */
76 BE_VRFY_WARN, /* verification level: warn */
77 BE_SCHED_LIST, /* scheduler: list scheduler */
78 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
79 "cplex" /* ilp solver */
83 static char config_file[256] = { 0 };
85 /* back end instruction set architecture to use */
86 static const arch_isa_if_t *isa_if = NULL;
90 /* possible dumping options */
91 static const lc_opt_enum_mask_items_t dump_items[] = {
92 { "none", DUMP_NONE },
93 { "initial", DUMP_INITIAL },
95 { "sched", DUMP_SCHED },
96 { "prepared", DUMP_PREPARED },
97 { "regalloc", DUMP_RA },
98 { "final", DUMP_FINAL },
100 { "all", 2 * DUMP_BE - 1 },
104 /* verify options. */
105 static const lc_opt_enum_int_items_t vrfy_items[] = {
106 { "off", BE_VRFY_OFF },
107 { "warn", BE_VRFY_WARN },
108 { "assert", BE_VRFY_ASSERT },
112 /* scheduling options. */
113 static const lc_opt_enum_int_items_t sched_items[] = {
114 { "list", BE_SCHED_LIST },
116 { "ilp", BE_SCHED_ILP },
117 #endif /* WITH_ILP */
121 static lc_opt_enum_mask_var_t dump_var = {
122 &be_options.dump_flags, dump_items
125 static lc_opt_enum_int_var_t vrfy_var = {
126 &be_options.vrfy_option, vrfy_items
129 static lc_opt_enum_int_var_t sched_var = {
130 &be_options.scheduler, sched_items
133 static const lc_opt_table_entry_t be_main_options[] = {
134 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
135 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
136 LC_OPT_ENT_NEGBOOL ("noomitfp", "do not omit frame pointer", &be_options.omit_fp),
137 LC_OPT_ENT_BOOL ("stabs", "enable stabs debug support", &be_options.stabs_debug_support),
138 LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg", &vrfy_var),
139 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
140 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
141 LC_OPT_ENT_ENUM_PTR ("sched", "select a scheduler", &sched_var),
142 LC_OPT_ENT_STR ("statfile", "append statistics to file statfile", &be_options.stat_file_name, sizeof(be_options.stat_file_name)),
145 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
146 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
147 #endif /* WITH_ILP */
151 #endif /* WITH_LIBCORE */
153 static be_module_list_entry_t *isa_ifs = NULL;
155 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
160 be_add_module_to_list(&isa_ifs, name, (void*) isa);
163 void be_opt_register(void)
166 lc_opt_entry_t *be_grp;
167 static int run_once = 0;
176 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
177 lc_opt_add_table(be_grp, be_main_options);
179 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
180 &isa_ifs, (void**) &isa_if);
181 #endif /* WITH_LIBCORE */
184 /* Parse one argument. */
185 int be_parse_arg(const char *arg) {
187 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
188 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
189 lc_opt_print_help(be_grp, stdout);
192 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
195 #endif /* WITH_LIBCORE */
198 /** The be parameters returned by default, all off. */
199 const static backend_params be_params = {
206 /* Perform schedule verification if requested. */
207 static void be_sched_vrfy(ir_graph *irg, int vrfy_opt) {
208 if (vrfy_opt == BE_VRFY_WARN) {
209 be_verify_schedule(irg);
211 else if (vrfy_opt == BE_VRFY_ASSERT) {
212 assert(be_verify_schedule(irg) && "Schedule verification failed.");
216 /* Initialize the Firm backend. Must be run BEFORE init_firm()! */
217 const backend_params *be_init(void)
223 if (isa_if->get_params)
224 return isa_if->get_params();
229 * Initializes the main environment for the backend.
231 * @param env an empty environment
232 * @param file_handle the file handle where the output will be written to
234 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
236 memset(env, 0, sizeof(*env));
237 obstack_init(&env->obst);
238 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
239 env->options = &be_options;
240 FIRM_DBG_REGISTER(env->dbg, "be.main");
242 arch_env_init(env->arch_env, isa_if, file_handle, env);
244 /* Register the irn handler of the architecture */
245 if (arch_isa_get_irn_handler(env->arch_env->isa))
246 arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
249 * Register the node handler of the back end infrastructure.
250 * This irn handler takes care of the platform independent
251 * spill, reload and perm nodes.
253 arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
254 env->phi_handler = be_phi_handler_new(env->arch_env);
255 arch_env_push_irn_handler(env->arch_env, env->phi_handler);
257 env->db_handle = be_options.stabs_debug_support ? be_stabs_open(file_handle) : be_nulldbg_open();
261 static void be_done_env(be_main_env_t *env)
263 env->arch_env->isa->impl->done(env->arch_env->isa);
264 be_dbg_close(env->db_handle);
265 be_phi_handler_free(env->phi_handler);
266 obstack_free(&env->obst, NULL);
270 * A wrapper around a firm dumper. Dumps only, if
273 * @param mask a bitmask containing the reason what will be dumped
274 * @param irg the IR graph to dump
275 * @param suffix the suffix for the dumper
276 * @param dumper the dumper to be called
278 static void dump(int mask, ir_graph *irg, const char *suffix,
279 void (*dumper)(ir_graph *, const char *))
281 if(be_options.dump_flags & mask)
282 be_dump(irg, suffix, dumper);
286 * Prepare a backend graph for code generation and initialize its birg
288 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
290 memset(birg, 0, sizeof(*birg));
292 birg->main_env = env;
294 edges_deactivate_kind(irg, EDGE_KIND_DEP);
295 edges_activate_kind(irg, EDGE_KIND_DEP);
297 DBG((env->dbg, LEVEL_2, "====> IRG: %F\n", irg));
298 dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
300 be_stat_init_irg(env->arch_env, irg);
301 be_do_stat_nodes(irg, "01 Begin");
303 /* set the current graph (this is important for several firm functions) */
304 current_ir_graph = irg;
306 /* Normalize proj nodes. */
307 normalize_proj_nodes(irg);
309 /* Make just one return node. */
310 normalize_one_return(irg);
312 /* Remove critical edges */
313 remove_critical_cf_edges(irg);
315 /* Ensure, that the ir_edges are computed. */
318 /* reset the phi handler. */
319 be_phi_handler_reset(env->phi_handler);
321 set_irg_phase_state(irg, phase_backend);
326 #define BE_TIMER_PUSH(timer) \
327 if (be_options.timing == BE_TIME_ON) { \
328 int res = lc_timer_push(timer); \
329 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
330 assert(res && "Timer already on stack, cannot be pushed twice."); \
331 else if (be_options.vrfy_option == BE_VRFY_WARN && ! res) \
332 fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
333 lc_timer_get_name(timer)); \
335 #define BE_TIMER_POP(timer) \
336 if (be_options.timing == BE_TIME_ON) { \
337 lc_timer_t *tmp = lc_timer_pop(); \
338 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
339 assert(tmp == timer && "Attempt to pop wrong timer."); \
340 else if (be_options.vrfy_option == BE_VRFY_WARN && tmp != timer) \
341 fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
342 lc_timer_get_name(tmp), lc_timer_get_name(timer)); \
346 #define BE_TIMER_ONLY(code) do { if (be_options.timing == BE_TIME_ON) { code; } } while(0)
350 #define BE_TIMER_PUSH(timer)
351 #define BE_TIMER_POP(timer)
352 #define BE_TIMER_ONLY(code)
354 #endif /* WITH_LIBCORE */
358 * The Firm backend main loop.
359 * Do architecture specific lowering for all graphs
360 * and call the architecture specific code generator.
362 * @param file_handle the file handle the output will be written to
363 * @param cup_name name of the compilation unit
365 static void be_main_loop(FILE *file_handle, const char *cup_name)
370 unsigned num_nodes_b = 0;
371 unsigned num_nodes_a = 0;
372 unsigned num_nodes_r = 0;
373 char prof_filename[256];
374 static const char suffix[] = ".prof";
378 be_ra_timer_t *ra_timer;
381 lc_timer_t *t_abi = NULL;
382 lc_timer_t *t_codegen = NULL;
383 lc_timer_t *t_sched = NULL;
384 lc_timer_t *t_constr = NULL;
385 lc_timer_t *t_regalloc = NULL;
386 lc_timer_t *t_finish = NULL;
387 lc_timer_t *t_emit = NULL;
388 lc_timer_t *t_other = NULL;
389 lc_timer_t *t_verify = NULL;
391 if (be_options.timing == BE_TIME_ON) {
392 t_abi = lc_timer_register("beabi", "be abi introduction");
393 t_codegen = lc_timer_register("codegen", "codegeneration");
394 t_sched = lc_timer_register("sched", "scheduling");
395 t_constr = lc_timer_register("constr", "assure constraints");
396 t_regalloc = lc_timer_register("regalloc", "register allocation");
397 t_finish = lc_timer_register("finish", "graph finish");
398 t_emit = lc_timer_register("emiter", "code emiter");
399 t_verify = lc_timer_register("verify", "graph verification");
400 t_other = lc_timer_register("other", "other");
402 #endif /* WITH_LIBCORE */
404 be_init_env(&env, file_handle);
406 isa = arch_env_get_isa(env.arch_env);
408 be_dbg_so(env.db_handle, cup_name);
409 be_dbg_types(env.db_handle);
411 /* we might need 1 birg more for instrumentation constructor */
412 num_birgs = get_irp_n_irgs();
413 birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
415 /* First: initialize all birgs */
416 for(i = 0; i < get_irp_n_irgs(); ++i) {
417 ir_graph *irg = get_irp_irg(i);
419 initialize_birg(&birgs[i], irg, &env);
423 Get the filename for the profiling data.
424 Beware: '\0' is already included in sizeof(suffix)
426 memset(prof_filename, 0, sizeof(prof_filename));
427 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
428 strcat(prof_filename, suffix);
431 Next: Either instruments all irgs with profiling code
432 or try to read in profile data for current translation unit.
434 if (be_options.opt_profile) {
435 ir_graph *prof_init_irg = be_profile_instrument(prof_filename, profile_default);
436 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
438 set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
441 be_profile_read(prof_filename);
445 for (i = 0; i < num_birgs; ++i) {
446 be_irg_t *birg = & birgs[i];
447 ir_graph *irg = birg->irg;
448 optimization_state_t state;
449 const arch_code_generator_if_t *cg_if;
452 /* set the current graph (this is important for several firm functions) */
453 current_ir_graph = irg;
455 #ifdef FIRM_STATISTICS
456 if(be_stat_ev_is_active()) {
457 ir_snprintf(irg_name, sizeof(irg_name), "%F", irg);
458 be_stat_tags[STAT_TAG_CLS] = "<all>";
459 be_stat_tags[STAT_TAG_IRG] = irg_name;
460 be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
464 /* stop and reset timers */
466 LC_STOP_AND_RESET_TIMER(t_abi);
467 LC_STOP_AND_RESET_TIMER(t_codegen);
468 LC_STOP_AND_RESET_TIMER(t_sched);
469 LC_STOP_AND_RESET_TIMER(t_constr);
470 LC_STOP_AND_RESET_TIMER(t_regalloc);
471 LC_STOP_AND_RESET_TIMER(t_finish);
472 LC_STOP_AND_RESET_TIMER(t_emit);
473 LC_STOP_AND_RESET_TIMER(t_verify);
474 LC_STOP_AND_RESET_TIMER(t_other);
476 BE_TIMER_PUSH(t_other); /* t_other */
478 /* Verify the initial graph */
479 BE_TIMER_PUSH(t_verify);
480 if (be_options.vrfy_option == BE_VRFY_WARN) {
481 irg_verify(irg, VRFY_ENFORCE_SSA);
482 be_check_dominance(irg);
483 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
484 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
485 assert(be_check_dominance(irg) && "Dominance verification failed");
487 BE_TIMER_POP(t_verify);
489 BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
491 /* Get the code generator interface. */
492 cg_if = isa->impl->get_code_generator_if(isa);
494 /* get a code generator for this graph. */
495 birg->cg = cg_if->init(birg);
497 /* some transformations need to be done before abi introduce */
498 arch_code_generator_before_abi(birg->cg);
500 /* reset the phi handler. */
501 be_phi_handler_reset(env.phi_handler);
503 /* implement the ABI conventions. */
504 BE_TIMER_PUSH(t_abi);
505 birg->abi = be_abi_introduce(birg);
508 dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
509 be_do_stat_nodes(irg, "02 Abi");
511 if (be_options.vrfy_option == BE_VRFY_WARN) {
512 be_check_dominance(irg);
513 be_verify_out_edges(irg);
515 else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
516 assert(be_verify_out_edges(irg));
517 assert(be_check_dominance(irg) && "Dominance verification failed");
521 BE_TIMER_PUSH(t_codegen);
522 arch_code_generator_prepare_graph(birg->cg);
523 BE_TIMER_POP(t_codegen);
525 be_do_stat_nodes(irg, "03 Prepare");
527 /* Compute loop nesting information (for weighting copies) */
528 dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
529 BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
531 if (be_options.vrfy_option == BE_VRFY_WARN) {
532 be_check_dominance(irg);
533 be_verify_out_edges(irg);
535 else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
536 assert(be_verify_out_edges(irg));
537 assert(be_check_dominance(irg) && "Dominance verification failed");
541 * Create execution frequencies from profile data or estimate some
543 if (be_profile_has_data()) {
544 birg->exec_freq = be_create_execfreqs_from_profile(irg);
546 birg->exec_freq = compute_execfreq(irg, 10);
549 /* let backend prepare scheduling */
550 BE_TIMER_PUSH(t_codegen);
551 arch_code_generator_before_sched(birg->cg);
552 BE_TIMER_POP(t_codegen);
554 /* schedule the irg */
555 BE_TIMER_PUSH(t_sched);
556 switch (be_options.scheduler) {
558 fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
560 list_sched(birg, &be_options);
565 //fprintf(stderr, "Warning: ILP scheduler not yet fully implemented, falling back to list scheduler.\n");
566 //list_sched(birg, &be_options);
568 #endif /* WITH_ILP */
570 BE_TIMER_POP(t_sched);
572 dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
575 BE_TIMER_PUSH(t_verify);
576 be_sched_vrfy(irg, be_options.vrfy_option);
577 BE_TIMER_POP(t_verify);
579 be_do_stat_nodes(irg, "04 Schedule");
581 /* introduce patterns to assure constraints */
582 BE_TIMER_PUSH(t_constr);
583 /* we switch off optimizations here, because they might cause trouble */
584 save_optimization_state(&state);
586 set_opt_normalize(0);
588 /* add Keeps for should_be_different constrained nodes */
589 /* beware: needs schedule due to usage of be_ssa_constr */
590 assure_constraints(birg);
591 BE_TIMER_POP(t_constr);
593 dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
594 be_do_stat_nodes(irg, "05 Constraints");
596 /* connect all stack modifying nodes together (see beabi.c) */
597 BE_TIMER_PUSH(t_abi);
598 be_abi_fix_stack_nodes(birg->abi, NULL);
601 dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
604 BE_TIMER_PUSH(t_verify);
605 be_sched_vrfy(irg, be_options.vrfy_option);
606 BE_TIMER_POP(t_verify);
608 /* do some statistics */
609 be_do_stat_reg_pressure(birg);
611 /* stuff needs to be done after scheduling but before register allocation */
612 BE_TIMER_PUSH(t_codegen);
613 arch_code_generator_before_ra(birg->cg);
614 BE_TIMER_POP(t_codegen);
616 #ifdef FIRM_STATISTICS
617 if(be_stat_ev_is_active()) {
618 be_stat_ev_l("costs_before_ra",
619 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
623 /* Do register allocation */
624 BE_TIMER_PUSH(t_regalloc);
625 be_allocate_registers(birg);
626 BE_TIMER_POP(t_regalloc);
628 #ifdef FIRM_STATISTICS
629 if(be_stat_ev_is_active()) {
630 be_stat_ev_l("costs_after_ra",
631 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
635 dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
636 be_do_stat_nodes(irg, "06 Register Allocation");
638 /* let the code generator prepare the graph for emitter */
639 BE_TIMER_PUSH(t_finish);
640 arch_code_generator_after_ra(birg->cg);
641 BE_TIMER_POP(t_finish);
643 /* fix stack offsets */
644 BE_TIMER_PUSH(t_abi);
645 be_abi_fix_stack_nodes(birg->abi, NULL);
646 be_remove_dead_nodes_from_schedule(irg);
647 be_abi_fix_stack_bias(birg->abi);
650 dump(DUMP_SCHED, irg, "-fix_stack_after_ra", dump_ir_block_graph_sched);
652 BE_TIMER_PUSH(t_finish);
653 arch_code_generator_finish(birg->cg);
654 BE_TIMER_POP(t_finish);
656 dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
658 /* check schedule and register allocation */
659 BE_TIMER_PUSH(t_verify);
660 if (be_options.vrfy_option == BE_VRFY_WARN) {
661 //irg_verify(irg, VRFY_ENFORCE_SSA);
662 be_check_dominance(irg);
663 be_verify_out_edges(irg);
664 be_verify_schedule(irg);
665 be_verify_register_allocation(env.arch_env, irg);
667 else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
668 //assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
669 assert(be_verify_out_edges(irg));
670 assert(be_check_dominance(irg) && "Dominance verification failed");
671 assert(be_verify_schedule(irg) && "Schedule verification failed");
672 assert(be_verify_register_allocation(env.arch_env, irg)
673 && "register allocation verification failed");
675 BE_TIMER_POP(t_verify);
677 /* emit assembler code */
678 BE_TIMER_PUSH(t_emit);
679 arch_code_generator_done(birg->cg);
680 BE_TIMER_POP(t_emit);
682 dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
684 BE_TIMER_PUSH(t_abi);
685 be_abi_free(birg->abi);
688 be_do_stat_nodes(irg, "07 Final");
689 restore_optimization_state(&state);
691 BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(irg));
692 BE_TIMER_POP(t_other);
694 #define LC_EMIT(timer) \
695 if(!be_stat_ev_is_active()) { \
696 printf("%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
698 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
700 #define LC_EMIT_RA(timer) \
701 if(!be_stat_ev_is_active()) { \
702 printf("\t%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
704 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
707 if(!be_stat_ev_is_active()) {
708 printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
709 printf("# nodes at begin: %u\n", num_nodes_b);
710 printf("# nodes before ra: %u\n", num_nodes_r);
711 printf("# nodes at end: %u\n\n", num_nodes_a);
718 LC_EMIT_RA(ra_timer->t_prolog);
719 LC_EMIT_RA(ra_timer->t_live);
720 LC_EMIT_RA(ra_timer->t_spill);
721 LC_EMIT_RA(ra_timer->t_spillslots);
722 LC_EMIT_RA(ra_timer->t_color);
723 LC_EMIT_RA(ra_timer->t_ifg);
724 LC_EMIT_RA(ra_timer->t_copymin);
725 LC_EMIT_RA(ra_timer->t_ssa);
726 LC_EMIT_RA(ra_timer->t_epilog);
727 LC_EMIT_RA(ra_timer->t_verify);
728 LC_EMIT_RA(ra_timer->t_other);
739 /* switched off due to statistics (statistic module needs all irgs) */
740 #ifdef FIRM_STATISTICS
741 if (! stat_is_active())
745 if(be_stat_ev_is_active()) {
757 /* Main interface to the frontend. */
758 void be_main(FILE *file_handle, const char *cup_name)
761 lc_timer_t *t = NULL;
763 /* The user specified another config file to read. do that now. */
764 if(strlen(config_file) > 0) {
767 if((f = fopen(config_file, "rt")) != NULL) {
768 lc_opt_from_file(config_file, f, NULL);
773 if (be_options.timing == BE_TIME_ON) {
774 t = lc_timer_register("bemain", "measure complete bemain loop");
776 if (lc_timer_enter_high_priority()) {
777 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
780 lc_timer_reset_and_start(t);
783 #ifdef FIRM_STATISTICS
784 be_init_stat_file(be_options.stat_file_name, cup_name);
786 #endif /* WITH_LIBCORE */
788 /* never build code for pseudo irgs */
789 set_visit_pseudo_irgs(0);
793 be_main_loop(file_handle, cup_name);
796 if (be_options.timing == BE_TIME_ON) {
798 lc_timer_leave_high_priority();
799 if(be_stat_ev_is_active()) {
800 be_stat_ev_l("backend_time", lc_timer_elapsed_msec(t));
802 printf("%-20s: %lu msec\n", "BEMAINLOOP", lc_timer_elapsed_msec(t));
806 #ifdef FIRM_STATISTICS
807 be_close_stat_file();
809 #endif /* WITH_LIBCORE */
812 /** The debug info retriever function. */
813 static retrieve_dbg_func retrieve_dbg = NULL;
815 /* Sets a debug info retriever. */
816 void be_set_debug_retrieve(retrieve_dbg_func func) {
820 /* Retrieve the debug info. */
821 const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
823 return retrieve_dbg(dbg, line);
829 int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
832 bs = bitset_alloca(cls->n_regs);
834 bitset_clear_all(bs);
836 assert(bitset_size(bs) == (unsigned) cls->n_regs);
837 arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
839 be_abi_put_ignore_regs(birg->abi, cls, bs);
841 return bitset_popcnt(bs);