3 * @author Sebastian Hack
14 #include <libcore/lc_opts.h>
15 #include <libcore/lc_opts_enum.h>
16 #include <libcore/lc_timing.h>
27 #include "iredges_t.h"
43 #include "besched_t.h"
44 #include "belistsched.h"
46 #include "bespillbelady.h"
48 #include "beraextern.h"
49 #include "bechordal_t.h"
51 #include "beifg_impl.h"
52 #include "becopyopt.h"
53 #include "becopystat.h"
54 #include "bessadestr.h"
57 #include "beschedmris.h"
60 #include "beprofile.h"
61 #include "be_dbgout.h"
64 #include "beilpsched.h"
67 /* options visible for anyone */
68 static be_options_t be_options = {
69 DUMP_NONE, /* dump flags */
70 BE_TIME_OFF, /* no timing */
71 0, /* no opt profile */
72 1, /* try to omit frame pointer */
73 0, /* always stabs debugging output */
74 BE_VRFY_WARN, /* verification level: warn */
75 BE_SCHED_LIST, /* scheduler: list scheduler */
76 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
77 "cplex" /* ilp solver */
81 static char config_file[256] = { 0 };
83 /* back end instruction set architecture to use */
84 static const arch_isa_if_t *isa_if = NULL;
86 /* possible dumping options */
87 static const lc_opt_enum_mask_items_t dump_items[] = {
88 { "none", DUMP_NONE },
89 { "initial", DUMP_INITIAL },
91 { "sched", DUMP_SCHED },
92 { "prepared", DUMP_PREPARED },
93 { "regalloc", DUMP_RA },
94 { "final", DUMP_FINAL },
96 { "all", 2 * DUMP_BE - 1 },
100 /* verify options. */
101 static const lc_opt_enum_int_items_t vrfy_items[] = {
102 { "off", BE_VRFY_OFF },
103 { "warn", BE_VRFY_WARN },
104 { "assert", BE_VRFY_ASSERT },
108 /* scheduling options. */
109 static const lc_opt_enum_int_items_t sched_items[] = {
110 { "list", BE_SCHED_LIST },
112 { "ilp", BE_SCHED_ILP },
113 #endif /* WITH_ILP */
117 static lc_opt_enum_mask_var_t dump_var = {
118 &be_options.dump_flags, dump_items
121 static lc_opt_enum_int_var_t vrfy_var = {
122 &be_options.vrfy_option, vrfy_items
125 static lc_opt_enum_int_var_t sched_var = {
126 &be_options.scheduler, sched_items
129 static const lc_opt_table_entry_t be_main_options[] = {
130 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
131 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
132 LC_OPT_ENT_NEGBOOL ("noomitfp", "do not omit frame pointer", &be_options.omit_fp),
133 LC_OPT_ENT_BOOL ("stabs", "enable stabs debug support", &be_options.stabs_debug_support),
134 LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg", &vrfy_var),
135 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
136 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
137 LC_OPT_ENT_ENUM_PTR ("sched", "select a scheduler", &sched_var),
138 LC_OPT_ENT_STR ("statfile", "append statistics to file statfile", &be_options.stat_file_name, sizeof(be_options.stat_file_name)),
141 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
142 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
143 #endif /* WITH_ILP */
147 static be_module_list_entry_t *isa_ifs = NULL;
149 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
154 be_add_module_to_list(&isa_ifs, name, (void*) isa);
157 void be_opt_register(void)
159 lc_opt_entry_t *be_grp;
160 static int run_once = 0;
169 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
170 lc_opt_add_table(be_grp, be_main_options);
172 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
173 &isa_ifs, (void**) &isa_if);
176 /* Parse one argument. */
177 int be_parse_arg(const char *arg) {
178 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
179 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
180 lc_opt_print_help(be_grp, stdout);
183 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
186 /** The be parameters returned by default, all off. */
187 const static backend_params be_params = {
194 /* Perform schedule verification if requested. */
195 static void be_sched_vrfy(ir_graph *irg, int vrfy_opt) {
196 if (vrfy_opt == BE_VRFY_WARN) {
197 be_verify_schedule(irg);
199 else if (vrfy_opt == BE_VRFY_ASSERT) {
200 assert(be_verify_schedule(irg) && "Schedule verification failed.");
204 /* Initialize the Firm backend. Must be run BEFORE init_firm()! */
205 const backend_params *be_init(void)
210 if (isa_if->get_params)
211 return isa_if->get_params();
216 * Initializes the main environment for the backend.
218 * @param env an empty environment
219 * @param file_handle the file handle where the output will be written to
221 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
223 memset(env, 0, sizeof(*env));
224 obstack_init(&env->obst);
225 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
226 env->options = &be_options;
227 FIRM_DBG_REGISTER(env->dbg, "be.main");
229 arch_env_init(env->arch_env, isa_if, file_handle, env);
231 /* Register the irn handler of the architecture */
232 if (arch_isa_get_irn_handler(env->arch_env->isa))
233 arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
236 * Register the node handler of the back end infrastructure.
237 * This irn handler takes care of the platform independent
238 * spill, reload and perm nodes.
240 arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
241 env->phi_handler = be_phi_handler_new(env->arch_env);
242 arch_env_push_irn_handler(env->arch_env, env->phi_handler);
244 env->db_handle = be_options.stabs_debug_support ? be_stabs_open(file_handle) : be_nulldbg_open();
248 static void be_done_env(be_main_env_t *env)
250 env->arch_env->isa->impl->done(env->arch_env->isa);
251 be_dbg_close(env->db_handle);
252 be_phi_handler_free(env->phi_handler);
253 obstack_free(&env->obst, NULL);
257 * A wrapper around a firm dumper. Dumps only, if
260 * @param mask a bitmask containing the reason what will be dumped
261 * @param irg the IR graph to dump
262 * @param suffix the suffix for the dumper
263 * @param dumper the dumper to be called
265 static void dump(int mask, ir_graph *irg, const char *suffix,
266 void (*dumper)(ir_graph *, const char *))
268 if(be_options.dump_flags & mask)
269 be_dump(irg, suffix, dumper);
273 * Prepare a backend graph for code generation and initialize its birg
275 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
277 memset(birg, 0, sizeof(*birg));
279 birg->main_env = env;
281 edges_deactivate_kind(irg, EDGE_KIND_DEP);
282 edges_activate_kind(irg, EDGE_KIND_DEP);
284 DBG((env->dbg, LEVEL_2, "====> IRG: %F\n", irg));
285 dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
287 be_stat_init_irg(env->arch_env, irg);
288 be_do_stat_nodes(irg, "01 Begin");
290 /* set the current graph (this is important for several firm functions) */
291 current_ir_graph = irg;
293 /* Normalize proj nodes. */
294 normalize_proj_nodes(irg);
296 /* Make just one return node. */
297 normalize_one_return(irg);
299 /* Remove critical edges */
300 remove_critical_cf_edges(irg);
302 /* Ensure, that the ir_edges are computed. */
305 /* reset the phi handler. */
306 be_phi_handler_reset(env->phi_handler);
308 set_irg_phase_state(irg, phase_backend);
311 #define BE_TIMER_PUSH(timer) \
312 if (be_options.timing == BE_TIME_ON) { \
313 int res = lc_timer_push(timer); \
314 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
315 assert(res && "Timer already on stack, cannot be pushed twice."); \
316 else if (be_options.vrfy_option == BE_VRFY_WARN && ! res) \
317 fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
318 lc_timer_get_name(timer)); \
320 #define BE_TIMER_POP(timer) \
321 if (be_options.timing == BE_TIME_ON) { \
322 lc_timer_t *tmp = lc_timer_pop(); \
323 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
324 assert(tmp == timer && "Attempt to pop wrong timer."); \
325 else if (be_options.vrfy_option == BE_VRFY_WARN && tmp != timer) \
326 fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
327 lc_timer_get_name(tmp), lc_timer_get_name(timer)); \
331 #define BE_TIMER_ONLY(code) do { if (be_options.timing == BE_TIME_ON) { code; } } while(0)
334 * The Firm backend main loop.
335 * Do architecture specific lowering for all graphs
336 * and call the architecture specific code generator.
338 * @param file_handle the file handle the output will be written to
339 * @param cup_name name of the compilation unit
341 static void be_main_loop(FILE *file_handle, const char *cup_name)
346 unsigned num_nodes_b = 0;
347 unsigned num_nodes_a = 0;
348 unsigned num_nodes_r = 0;
349 char prof_filename[256];
350 static const char suffix[] = ".prof";
353 ir_graph **irg_list, **backend_irg_list;
355 lc_timer_t *t_abi = NULL;
356 lc_timer_t *t_codegen = NULL;
357 lc_timer_t *t_sched = NULL;
358 lc_timer_t *t_constr = NULL;
359 lc_timer_t *t_regalloc = NULL;
360 lc_timer_t *t_finish = NULL;
361 lc_timer_t *t_emit = NULL;
362 lc_timer_t *t_other = NULL;
363 lc_timer_t *t_verify = NULL;
365 if (be_options.timing == BE_TIME_ON) {
366 t_abi = lc_timer_register("beabi", "be abi introduction");
367 t_codegen = lc_timer_register("codegen", "codegeneration");
368 t_sched = lc_timer_register("sched", "scheduling");
369 t_constr = lc_timer_register("constr", "assure constraints");
370 t_regalloc = lc_timer_register("regalloc", "register allocation");
371 t_finish = lc_timer_register("finish", "graph finish");
372 t_emit = lc_timer_register("emiter", "code emiter");
373 t_verify = lc_timer_register("verify", "graph verification");
374 t_other = lc_timer_register("other", "other");
377 be_init_env(&env, file_handle);
379 isa = arch_env_get_isa(env.arch_env);
381 be_dbg_so(env.db_handle, cup_name);
382 be_dbg_types(env.db_handle);
384 /* backend may provide an ordered list of irgs where code should be generated for */
385 irg_list = NEW_ARR_F(ir_graph *, 0);
386 backend_irg_list = arch_isa_get_backend_irg_list(isa, &irg_list);
388 /* we might need 1 birg more for instrumentation constructor */
389 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
390 birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
392 /* First: initialize all birgs */
393 for(i = 0; i < num_birgs; ++i) {
394 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
395 initialize_birg(&birgs[i], irg, &env);
400 Get the filename for the profiling data.
401 Beware: '\0' is already included in sizeof(suffix)
403 memset(prof_filename, 0, sizeof(prof_filename));
404 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
405 strcat(prof_filename, suffix);
408 Next: Either instruments all irgs with profiling code
409 or try to read in profile data for current translation unit.
411 if (be_options.opt_profile) {
412 ir_graph *prof_init_irg = be_profile_instrument(prof_filename, profile_default);
413 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
415 set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
417 be_profile_read(prof_filename);
421 for (i = 0; i < num_birgs; ++i) {
422 be_irg_t *birg = &birgs[i];
423 ir_graph *irg = birg->irg;
424 optimization_state_t state;
425 const arch_code_generator_if_t *cg_if;
428 /* set the current graph (this is important for several firm functions) */
429 current_ir_graph = irg;
431 #ifdef FIRM_STATISTICS
432 if(be_stat_ev_is_active()) {
433 ir_snprintf(irg_name, sizeof(irg_name), "%F", irg);
434 be_stat_tags[STAT_TAG_CLS] = "<all>";
435 be_stat_tags[STAT_TAG_IRG] = irg_name;
436 be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
440 /* stop and reset timers */
442 LC_STOP_AND_RESET_TIMER(t_abi);
443 LC_STOP_AND_RESET_TIMER(t_codegen);
444 LC_STOP_AND_RESET_TIMER(t_sched);
445 LC_STOP_AND_RESET_TIMER(t_constr);
446 LC_STOP_AND_RESET_TIMER(t_regalloc);
447 LC_STOP_AND_RESET_TIMER(t_finish);
448 LC_STOP_AND_RESET_TIMER(t_emit);
449 LC_STOP_AND_RESET_TIMER(t_verify);
450 LC_STOP_AND_RESET_TIMER(t_other);
452 BE_TIMER_PUSH(t_other); /* t_other */
454 /* Verify the initial graph */
455 BE_TIMER_PUSH(t_verify);
456 if (be_options.vrfy_option == BE_VRFY_WARN) {
457 irg_verify(irg, VRFY_ENFORCE_SSA);
458 be_check_dominance(irg);
459 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
460 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
461 assert(be_check_dominance(irg) && "Dominance verification failed");
463 BE_TIMER_POP(t_verify);
465 BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
467 /* Get the code generator interface. */
468 cg_if = isa->impl->get_code_generator_if(isa);
470 /* get a code generator for this graph. */
471 birg->cg = cg_if->init(birg);
473 /* some transformations need to be done before abi introduce */
474 arch_code_generator_before_abi(birg->cg);
476 /* reset the phi handler. */
477 be_phi_handler_reset(env.phi_handler);
479 /* implement the ABI conventions. */
480 BE_TIMER_PUSH(t_abi);
481 birg->abi = be_abi_introduce(birg);
484 dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
485 be_do_stat_nodes(irg, "02 Abi");
487 if (be_options.vrfy_option == BE_VRFY_WARN) {
488 be_check_dominance(irg);
489 be_verify_out_edges(irg);
490 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
491 assert(be_verify_out_edges(irg));
492 assert(be_check_dominance(irg) && "Dominance verification failed");
496 BE_TIMER_PUSH(t_codegen);
497 arch_code_generator_prepare_graph(birg->cg);
498 BE_TIMER_POP(t_codegen);
500 be_do_stat_nodes(irg, "03 Prepare");
502 dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
503 BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
505 if (be_options.vrfy_option == BE_VRFY_WARN) {
506 be_check_dominance(irg);
507 be_verify_out_edges(irg);
508 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
509 assert(be_verify_out_edges(irg));
510 assert(be_check_dominance(irg) && "Dominance verification failed");
514 * Create execution frequencies from profile data or estimate some
516 if (be_profile_has_data()) {
517 birg->exec_freq = be_create_execfreqs_from_profile(irg);
519 birg->exec_freq = compute_execfreq(irg, 10);
522 /* let backend prepare scheduling */
523 BE_TIMER_PUSH(t_codegen);
524 arch_code_generator_before_sched(birg->cg);
525 BE_TIMER_POP(t_codegen);
527 /* schedule the irg */
528 BE_TIMER_PUSH(t_sched);
529 switch (be_options.scheduler) {
531 fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
533 list_sched(birg, &be_options);
538 //fprintf(stderr, "Warning: ILP scheduler not yet fully implemented, falling back to list scheduler.\n");
539 //list_sched(birg, &be_options);
541 #endif /* WITH_ILP */
543 BE_TIMER_POP(t_sched);
545 dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
548 BE_TIMER_PUSH(t_verify);
549 be_sched_vrfy(irg, be_options.vrfy_option);
550 BE_TIMER_POP(t_verify);
552 be_do_stat_nodes(irg, "04 Schedule");
554 /* introduce patterns to assure constraints */
555 BE_TIMER_PUSH(t_constr);
556 /* we switch off optimizations here, because they might cause trouble */
557 save_optimization_state(&state);
559 set_opt_normalize(0);
561 /* add Keeps for should_be_different constrained nodes */
562 /* beware: needs schedule due to usage of be_ssa_constr */
563 assure_constraints(birg);
564 BE_TIMER_POP(t_constr);
566 dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
567 be_do_stat_nodes(irg, "05 Constraints");
569 /* connect all stack modifying nodes together (see beabi.c) */
570 BE_TIMER_PUSH(t_abi);
571 be_abi_fix_stack_nodes(birg->abi, NULL);
574 dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
577 BE_TIMER_PUSH(t_verify);
578 be_sched_vrfy(irg, be_options.vrfy_option);
579 BE_TIMER_POP(t_verify);
581 /* do some statistics */
582 be_do_stat_reg_pressure(birg);
584 /* stuff needs to be done after scheduling but before register allocation */
585 BE_TIMER_PUSH(t_codegen);
586 arch_code_generator_before_ra(birg->cg);
587 BE_TIMER_POP(t_codegen);
589 #ifdef FIRM_STATISTICS
590 if(be_stat_ev_is_active()) {
591 be_stat_ev_l("costs_before_ra",
592 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
596 /* Do register allocation */
597 BE_TIMER_PUSH(t_regalloc);
598 be_allocate_registers(birg);
599 BE_TIMER_POP(t_regalloc);
601 #ifdef FIRM_STATISTICS
602 if(be_stat_ev_is_active()) {
603 be_stat_ev_l("costs_after_ra",
604 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
608 dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
609 be_do_stat_nodes(irg, "06 Register Allocation");
611 /* let the code generator prepare the graph for emitter */
612 BE_TIMER_PUSH(t_finish);
613 arch_code_generator_after_ra(birg->cg);
614 BE_TIMER_POP(t_finish);
616 /* fix stack offsets */
617 BE_TIMER_PUSH(t_abi);
618 be_abi_fix_stack_nodes(birg->abi, NULL);
619 be_remove_dead_nodes_from_schedule(irg);
620 be_abi_fix_stack_bias(birg->abi);
623 dump(DUMP_SCHED, irg, "-fix_stack_after_ra", dump_ir_block_graph_sched);
625 BE_TIMER_PUSH(t_finish);
626 arch_code_generator_finish(birg->cg);
627 BE_TIMER_POP(t_finish);
629 dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
631 /* check schedule and register allocation */
632 BE_TIMER_PUSH(t_verify);
633 if (be_options.vrfy_option == BE_VRFY_WARN) {
634 irg_verify(irg, VRFY_ENFORCE_SSA);
635 be_check_dominance(irg);
636 be_verify_out_edges(irg);
637 be_verify_schedule(irg);
638 be_verify_register_allocation(env.arch_env, irg);
639 be_verify_spillslots(env.arch_env, irg);
640 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
641 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
642 assert(be_verify_out_edges(irg) && "out edge verification failed");
643 assert(be_check_dominance(irg) && "Dominance verification failed");
644 assert(be_verify_schedule(irg) && "Schedule verification failed");
645 assert(be_verify_register_allocation(env.arch_env, irg)
646 && "register allocation verification failed");
647 assert(be_verify_spillslots(env.arch_env, irg) && "Spillslot verification failed");
650 BE_TIMER_POP(t_verify);
652 /* emit assembler code */
653 BE_TIMER_PUSH(t_emit);
654 arch_code_generator_done(birg->cg);
655 BE_TIMER_POP(t_emit);
657 dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
659 BE_TIMER_PUSH(t_abi);
660 be_abi_free(birg->abi);
663 be_do_stat_nodes(irg, "07 Final");
664 restore_optimization_state(&state);
666 BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(irg));
667 BE_TIMER_POP(t_other);
669 #define LC_EMIT(timer) \
670 if(!be_stat_ev_is_active()) { \
671 printf("%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
673 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
675 #define LC_EMIT_RA(timer) \
676 if(!be_stat_ev_is_active()) { \
677 printf("\t%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
679 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
682 if(!be_stat_ev_is_active()) {
683 printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
684 printf("# nodes at begin: %u\n", num_nodes_b);
685 printf("# nodes before ra: %u\n", num_nodes_r);
686 printf("# nodes at end: %u\n\n", num_nodes_a);
693 if(global_ra_timer != NULL) {
694 LC_EMIT_RA(global_ra_timer->t_prolog);
695 LC_EMIT_RA(global_ra_timer->t_live);
696 LC_EMIT_RA(global_ra_timer->t_spill);
697 LC_EMIT_RA(global_ra_timer->t_spillslots);
698 LC_EMIT_RA(global_ra_timer->t_color);
699 LC_EMIT_RA(global_ra_timer->t_ifg);
700 LC_EMIT_RA(global_ra_timer->t_copymin);
701 LC_EMIT_RA(global_ra_timer->t_ssa);
702 LC_EMIT_RA(global_ra_timer->t_epilog);
703 LC_EMIT_RA(global_ra_timer->t_verify);
704 LC_EMIT_RA(global_ra_timer->t_other);
716 /* switched off due to statistics (statistic module needs all irgs) */
717 #if 0 /* STA needs irgs */
718 #ifdef FIRM_STATISTICS
719 if (! stat_is_active())
720 #endif /* FIRM_STATISTICS */
723 if(be_stat_ev_is_active()) {
735 /* Main interface to the frontend. */
736 void be_main(FILE *file_handle, const char *cup_name)
738 lc_timer_t *t = NULL;
740 /* The user specified another config file to read. do that now. */
741 if(strlen(config_file) > 0) {
744 if((f = fopen(config_file, "rt")) != NULL) {
745 lc_opt_from_file(config_file, f, NULL);
750 if (be_options.timing == BE_TIME_ON) {
751 t = lc_timer_register("bemain", "measure complete bemain loop");
753 if (lc_timer_enter_high_priority()) {
754 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
757 lc_timer_reset_and_start(t);
760 #ifdef FIRM_STATISTICS
761 be_init_stat_file(be_options.stat_file_name, cup_name);
764 /* never build code for pseudo irgs */
765 set_visit_pseudo_irgs(0);
769 be_main_loop(file_handle, cup_name);
771 if (be_options.timing == BE_TIME_ON) {
773 lc_timer_leave_high_priority();
774 if(be_stat_ev_is_active()) {
775 be_stat_ev_l("backend_time", lc_timer_elapsed_msec(t));
777 printf("%-20s: %lu msec\n", "BEMAINLOOP", lc_timer_elapsed_msec(t));
781 #ifdef FIRM_STATISTICS
782 be_close_stat_file();
786 /** The debug info retriever function. */
787 static retrieve_dbg_func retrieve_dbg = NULL;
789 /* Sets a debug info retriever. */
790 void be_set_debug_retrieve(retrieve_dbg_func func) {
794 /* Retrieve the debug info. */
795 const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
797 return retrieve_dbg(dbg, line);
803 int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
806 bs = bitset_alloca(cls->n_regs);
808 bitset_clear_all(bs);
810 assert(bitset_size(bs) == (unsigned) cls->n_regs);
811 arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
813 be_abi_put_ignore_regs(birg->abi, cls, bs);
815 return bitset_popcnt(bs);