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, /* no 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 */
78 "", /* filename for statistic output */
82 static char config_file[256] = { 0 };
84 /* back end instruction set architecture to use */
85 static const arch_isa_if_t *isa_if = NULL;
87 /* possible dumping options */
88 static const lc_opt_enum_mask_items_t dump_items[] = {
89 { "none", DUMP_NONE },
90 { "initial", DUMP_INITIAL },
92 { "sched", DUMP_SCHED },
93 { "prepared", DUMP_PREPARED },
94 { "regalloc", DUMP_RA },
95 { "final", DUMP_FINAL },
97 { "all", 2 * DUMP_BE - 1 },
101 /* verify options. */
102 static const lc_opt_enum_int_items_t vrfy_items[] = {
103 { "off", BE_VRFY_OFF },
104 { "warn", BE_VRFY_WARN },
105 { "assert", BE_VRFY_ASSERT },
109 /* scheduling options. */
110 static const lc_opt_enum_int_items_t sched_items[] = {
111 { "list", BE_SCHED_LIST },
113 { "ilp", BE_SCHED_ILP },
114 #endif /* WITH_ILP */
118 static lc_opt_enum_mask_var_t dump_var = {
119 &be_options.dump_flags, dump_items
122 static lc_opt_enum_int_var_t vrfy_var = {
123 &be_options.vrfy_option, vrfy_items
126 static lc_opt_enum_int_var_t sched_var = {
127 &be_options.scheduler, sched_items
130 static const lc_opt_table_entry_t be_main_options[] = {
131 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
132 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
133 LC_OPT_ENT_NEGBOOL ("noomitfp", "do not omit frame pointer", &be_options.omit_fp),
134 LC_OPT_ENT_BOOL ("stabs", "enable stabs debug support", &be_options.stabs_debug_support),
135 LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg", &vrfy_var),
136 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
137 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
138 LC_OPT_ENT_ENUM_PTR ("sched", "select a scheduler", &sched_var),
139 LC_OPT_ENT_STR ("statfile", "append statistics to file statfile", &be_options.stat_file_name, sizeof(be_options.stat_file_name)),
142 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
143 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
144 #endif /* WITH_ILP */
148 static be_module_list_entry_t *isa_ifs = NULL;
150 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
155 be_add_module_to_list(&isa_ifs, name, (void*) isa);
158 void be_opt_register(void)
160 lc_opt_entry_t *be_grp;
161 static int run_once = 0;
170 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
171 lc_opt_add_table(be_grp, be_main_options);
173 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
174 &isa_ifs, (void**) &isa_if);
177 /* Parse one argument. */
178 int be_parse_arg(const char *arg) {
179 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
180 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
181 lc_opt_print_help(be_grp, stdout);
184 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
187 /** The be parameters returned by default, all off. */
188 const static backend_params be_params = {
195 /* Perform schedule verification if requested. */
196 static void be_sched_vrfy(ir_graph *irg, int vrfy_opt) {
197 if (vrfy_opt == BE_VRFY_WARN) {
198 be_verify_schedule(irg);
200 else if (vrfy_opt == BE_VRFY_ASSERT) {
201 assert(be_verify_schedule(irg) && "Schedule verification failed.");
205 /* Initialize the Firm backend. Must be run BEFORE init_firm()! */
206 const backend_params *be_init(void)
211 if (isa_if->get_params)
212 return isa_if->get_params();
217 * Initializes the main environment for the backend.
219 * @param env an empty environment
220 * @param file_handle the file handle where the output will be written to
222 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
224 memset(env, 0, sizeof(*env));
225 obstack_init(&env->obst);
226 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
227 env->options = &be_options;
228 FIRM_DBG_REGISTER(env->dbg, "be.main");
230 arch_env_init(env->arch_env, isa_if, file_handle, env);
232 /* Register the irn handler of the architecture */
233 if (arch_isa_get_irn_handler(env->arch_env->isa))
234 arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
237 * Register the node handler of the back end infrastructure.
238 * This irn handler takes care of the platform independent
239 * spill, reload and perm nodes.
241 arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
242 env->phi_handler = be_phi_handler_new(env->arch_env);
243 arch_env_push_irn_handler(env->arch_env, env->phi_handler);
245 env->db_handle = be_options.stabs_debug_support ? be_stabs_open(file_handle) : be_nulldbg_open();
249 static void be_done_env(be_main_env_t *env)
251 env->arch_env->isa->impl->done(env->arch_env->isa);
252 be_dbg_close(env->db_handle);
253 be_phi_handler_free(env->phi_handler);
254 obstack_free(&env->obst, NULL);
258 * A wrapper around a firm dumper. Dumps only, if
261 * @param mask a bitmask containing the reason what will be dumped
262 * @param irg the IR graph to dump
263 * @param suffix the suffix for the dumper
264 * @param dumper the dumper to be called
266 static void dump(int mask, ir_graph *irg, const char *suffix,
267 void (*dumper)(ir_graph *, const char *))
269 if(be_options.dump_flags & mask)
270 be_dump(irg, suffix, dumper);
274 * Prepare a backend graph for code generation and initialize its birg
276 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
278 memset(birg, 0, sizeof(*birg));
280 birg->main_env = env;
282 edges_deactivate_kind(irg, EDGE_KIND_DEP);
283 edges_activate_kind(irg, EDGE_KIND_DEP);
285 DBG((env->dbg, LEVEL_2, "====> IRG: %F\n", irg));
286 dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
288 be_stat_init_irg(env->arch_env, irg);
289 be_do_stat_nodes(irg, "01 Begin");
291 /* set the current graph (this is important for several firm functions) */
292 current_ir_graph = irg;
294 /* Normalize proj nodes. */
295 normalize_proj_nodes(irg);
297 /* Make just one return node. */
298 normalize_one_return(irg);
300 /* Remove critical edges */
301 remove_critical_cf_edges(irg);
303 /* Ensure, that the ir_edges are computed. */
306 /* reset the phi handler. */
307 be_phi_handler_reset(env->phi_handler);
309 set_irg_phase_state(irg, phase_backend);
312 #define BE_TIMER_PUSH(timer) \
313 if (be_options.timing == BE_TIME_ON) { \
314 int res = lc_timer_push(timer); \
315 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
316 assert(res && "Timer already on stack, cannot be pushed twice."); \
317 else if (be_options.vrfy_option == BE_VRFY_WARN && ! res) \
318 fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
319 lc_timer_get_name(timer)); \
321 #define BE_TIMER_POP(timer) \
322 if (be_options.timing == BE_TIME_ON) { \
323 lc_timer_t *tmp = lc_timer_pop(); \
324 if (be_options.vrfy_option == BE_VRFY_ASSERT) \
325 assert(tmp == timer && "Attempt to pop wrong timer."); \
326 else if (be_options.vrfy_option == BE_VRFY_WARN && tmp != timer) \
327 fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
328 lc_timer_get_name(tmp), lc_timer_get_name(timer)); \
332 #define BE_TIMER_ONLY(code) do { if (be_options.timing == BE_TIME_ON) { code; } } while(0)
335 * The Firm backend main loop.
336 * Do architecture specific lowering for all graphs
337 * and call the architecture specific code generator.
339 * @param file_handle the file handle the output will be written to
340 * @param cup_name name of the compilation unit
342 static void be_main_loop(FILE *file_handle, const char *cup_name)
347 unsigned num_nodes_b = 0;
348 unsigned num_nodes_a = 0;
349 unsigned num_nodes_r = 0;
350 char prof_filename[256];
351 static const char suffix[] = ".prof";
354 ir_graph **irg_list, **backend_irg_list;
356 lc_timer_t *t_abi = NULL;
357 lc_timer_t *t_codegen = NULL;
358 lc_timer_t *t_sched = NULL;
359 lc_timer_t *t_constr = NULL;
360 lc_timer_t *t_regalloc = NULL;
361 lc_timer_t *t_finish = NULL;
362 lc_timer_t *t_emit = NULL;
363 lc_timer_t *t_other = NULL;
364 lc_timer_t *t_verify = NULL;
366 if (be_options.timing == BE_TIME_ON) {
367 t_abi = lc_timer_register("beabi", "be abi introduction");
368 t_codegen = lc_timer_register("codegen", "codegeneration");
369 t_sched = lc_timer_register("sched", "scheduling");
370 t_constr = lc_timer_register("constr", "assure constraints");
371 t_regalloc = lc_timer_register("regalloc", "register allocation");
372 t_finish = lc_timer_register("finish", "graph finish");
373 t_emit = lc_timer_register("emiter", "code emiter");
374 t_verify = lc_timer_register("verify", "graph verification");
375 t_other = lc_timer_register("other", "other");
378 be_init_env(&env, file_handle);
380 isa = arch_env_get_isa(env.arch_env);
382 be_dbg_so(env.db_handle, cup_name);
383 be_dbg_types(env.db_handle);
385 /* backend may provide an ordered list of irgs where code should be generated for */
386 irg_list = NEW_ARR_F(ir_graph *, 0);
387 backend_irg_list = arch_isa_get_backend_irg_list(isa, &irg_list);
389 /* we might need 1 birg more for instrumentation constructor */
390 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
391 birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
393 /* First: initialize all birgs */
394 for(i = 0; i < num_birgs; ++i) {
395 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
396 initialize_birg(&birgs[i], irg, &env);
401 Get the filename for the profiling data.
402 Beware: '\0' is already included in sizeof(suffix)
404 memset(prof_filename, 0, sizeof(prof_filename));
405 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
406 strcat(prof_filename, suffix);
409 Next: Either instruments all irgs with profiling code
410 or try to read in profile data for current translation unit.
412 if (be_options.opt_profile) {
413 ir_graph *prof_init_irg = be_profile_instrument(prof_filename, profile_default);
414 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
416 set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
418 be_profile_read(prof_filename);
422 for (i = 0; i < num_birgs; ++i) {
423 be_irg_t *birg = &birgs[i];
424 ir_graph *irg = birg->irg;
425 optimization_state_t state;
426 const arch_code_generator_if_t *cg_if;
429 /* set the current graph (this is important for several firm functions) */
430 current_ir_graph = irg;
432 #ifdef FIRM_STATISTICS
433 if(be_stat_ev_is_active()) {
434 ir_snprintf(irg_name, sizeof(irg_name), "%F", irg);
435 be_stat_tags[STAT_TAG_CLS] = "<all>";
436 be_stat_tags[STAT_TAG_IRG] = irg_name;
437 be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
441 /* stop and reset timers */
443 LC_STOP_AND_RESET_TIMER(t_abi);
444 LC_STOP_AND_RESET_TIMER(t_codegen);
445 LC_STOP_AND_RESET_TIMER(t_sched);
446 LC_STOP_AND_RESET_TIMER(t_constr);
447 LC_STOP_AND_RESET_TIMER(t_regalloc);
448 LC_STOP_AND_RESET_TIMER(t_finish);
449 LC_STOP_AND_RESET_TIMER(t_emit);
450 LC_STOP_AND_RESET_TIMER(t_verify);
451 LC_STOP_AND_RESET_TIMER(t_other);
453 BE_TIMER_PUSH(t_other); /* t_other */
455 /* Verify the initial graph */
456 BE_TIMER_PUSH(t_verify);
457 if (be_options.vrfy_option == BE_VRFY_WARN) {
458 irg_verify(irg, VRFY_ENFORCE_SSA);
459 be_check_dominance(irg);
460 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
461 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
462 assert(be_check_dominance(irg) && "Dominance verification failed");
464 BE_TIMER_POP(t_verify);
466 BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
468 /* Get the code generator interface. */
469 cg_if = isa->impl->get_code_generator_if(isa);
471 /* get a code generator for this graph. */
472 birg->cg = cg_if->init(birg);
474 /* some transformations need to be done before abi introduce */
475 arch_code_generator_before_abi(birg->cg);
477 /* reset the phi handler. */
478 be_phi_handler_reset(env.phi_handler);
480 /* implement the ABI conventions. */
481 BE_TIMER_PUSH(t_abi);
482 birg->abi = be_abi_introduce(birg);
485 dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
486 be_do_stat_nodes(irg, "02 Abi");
488 if (be_options.vrfy_option == BE_VRFY_WARN) {
489 be_check_dominance(irg);
490 be_verify_out_edges(irg);
491 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
492 assert(be_verify_out_edges(irg));
493 assert(be_check_dominance(irg) && "Dominance verification failed");
497 BE_TIMER_PUSH(t_codegen);
498 arch_code_generator_prepare_graph(birg->cg);
499 BE_TIMER_POP(t_codegen);
501 be_do_stat_nodes(irg, "03 Prepare");
503 dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
504 BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
506 if (be_options.vrfy_option == BE_VRFY_WARN) {
507 be_check_dominance(irg);
508 be_verify_out_edges(irg);
509 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
510 assert(be_verify_out_edges(irg));
511 assert(be_check_dominance(irg) && "Dominance verification failed");
515 * Create execution frequencies from profile data or estimate some
517 if (be_profile_has_data()) {
518 birg->exec_freq = be_create_execfreqs_from_profile(irg);
520 birg->exec_freq = compute_execfreq(irg, 10);
523 /* let backend prepare scheduling */
524 BE_TIMER_PUSH(t_codegen);
525 arch_code_generator_before_sched(birg->cg);
526 BE_TIMER_POP(t_codegen);
528 /* schedule the irg */
529 BE_TIMER_PUSH(t_sched);
530 switch (be_options.scheduler) {
532 fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
534 list_sched(birg, &be_options);
538 be_ilp_sched(birg, &be_options);
540 #endif /* WITH_ILP */
542 BE_TIMER_POP(t_sched);
544 dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
547 BE_TIMER_PUSH(t_verify);
548 be_sched_vrfy(irg, be_options.vrfy_option);
549 BE_TIMER_POP(t_verify);
551 be_do_stat_nodes(irg, "04 Schedule");
553 /* introduce patterns to assure constraints */
554 BE_TIMER_PUSH(t_constr);
555 /* we switch off optimizations here, because they might cause trouble */
556 save_optimization_state(&state);
558 set_opt_normalize(0);
560 /* add Keeps for should_be_different constrained nodes */
561 /* beware: needs schedule due to usage of be_ssa_constr */
562 assure_constraints(birg);
563 BE_TIMER_POP(t_constr);
565 dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
566 be_do_stat_nodes(irg, "05 Constraints");
568 /* connect all stack modifying nodes together (see beabi.c) */
569 BE_TIMER_PUSH(t_abi);
570 be_abi_fix_stack_nodes(birg->abi);
573 dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
576 BE_TIMER_PUSH(t_verify);
577 be_sched_vrfy(irg, be_options.vrfy_option);
578 BE_TIMER_POP(t_verify);
580 /* do some statistics */
581 be_do_stat_reg_pressure(birg);
583 /* stuff needs to be done after scheduling but before register allocation */
584 BE_TIMER_PUSH(t_codegen);
585 arch_code_generator_before_ra(birg->cg);
586 BE_TIMER_POP(t_codegen);
588 #ifdef FIRM_STATISTICS
589 if(be_stat_ev_is_active()) {
590 be_stat_ev_l("costs_before_ra",
591 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
595 /* Do register allocation */
596 BE_TIMER_PUSH(t_regalloc);
597 be_allocate_registers(birg);
598 BE_TIMER_POP(t_regalloc);
600 #ifdef FIRM_STATISTICS
601 if(be_stat_ev_is_active()) {
602 be_stat_ev_l("costs_after_ra",
603 (long) be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
607 dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
608 be_do_stat_nodes(irg, "06 Register Allocation");
610 /* let the code generator prepare the graph for emitter */
611 BE_TIMER_PUSH(t_finish);
612 arch_code_generator_after_ra(birg->cg);
613 BE_TIMER_POP(t_finish);
615 /* fix stack offsets */
616 BE_TIMER_PUSH(t_abi);
617 be_abi_fix_stack_nodes(birg->abi);
618 be_remove_dead_nodes_from_schedule(irg);
619 be_abi_fix_stack_bias(birg->abi);
622 dump(DUMP_SCHED, irg, "-fix_stack_after_ra", dump_ir_block_graph_sched);
624 BE_TIMER_PUSH(t_finish);
625 arch_code_generator_finish(birg->cg);
626 BE_TIMER_POP(t_finish);
628 dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
630 /* check schedule and register allocation */
631 BE_TIMER_PUSH(t_verify);
632 if (be_options.vrfy_option == BE_VRFY_WARN) {
633 irg_verify(irg, VRFY_ENFORCE_SSA);
634 be_check_dominance(irg);
635 be_verify_out_edges(irg);
636 be_verify_schedule(irg);
637 be_verify_register_allocation(env.arch_env, irg);
638 be_verify_spillslots(env.arch_env, irg);
639 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
640 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
641 assert(be_verify_out_edges(irg) && "out edge verification failed");
642 assert(be_check_dominance(irg) && "Dominance verification failed");
643 assert(be_verify_schedule(irg) && "Schedule verification failed");
644 assert(be_verify_register_allocation(env.arch_env, irg)
645 && "register allocation verification failed");
646 assert(be_verify_spillslots(env.arch_env, irg) && "Spillslot verification failed");
649 BE_TIMER_POP(t_verify);
651 /* emit assembler code */
652 BE_TIMER_PUSH(t_emit);
653 arch_code_generator_done(birg->cg);
654 BE_TIMER_POP(t_emit);
656 dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
658 BE_TIMER_PUSH(t_abi);
659 be_abi_free(birg->abi);
662 be_do_stat_nodes(irg, "07 Final");
663 restore_optimization_state(&state);
665 BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(irg));
666 BE_TIMER_POP(t_other);
668 #define LC_EMIT(timer) \
669 if(!be_stat_ev_is_active()) { \
670 printf("%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
672 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
674 #define LC_EMIT_RA(timer) \
675 if(!be_stat_ev_is_active()) { \
676 printf("\t%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0); \
678 be_stat_ev_l(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
681 if(!be_stat_ev_is_active()) {
682 printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
683 printf("# nodes at begin: %u\n", num_nodes_b);
684 printf("# nodes before ra: %u\n", num_nodes_r);
685 printf("# nodes at end: %u\n\n", num_nodes_a);
692 if(global_ra_timer != NULL) {
693 LC_EMIT_RA(global_ra_timer->t_prolog);
694 LC_EMIT_RA(global_ra_timer->t_live);
695 LC_EMIT_RA(global_ra_timer->t_spill);
696 LC_EMIT_RA(global_ra_timer->t_spillslots);
697 LC_EMIT_RA(global_ra_timer->t_color);
698 LC_EMIT_RA(global_ra_timer->t_ifg);
699 LC_EMIT_RA(global_ra_timer->t_copymin);
700 LC_EMIT_RA(global_ra_timer->t_ssa);
701 LC_EMIT_RA(global_ra_timer->t_epilog);
702 LC_EMIT_RA(global_ra_timer->t_verify);
703 LC_EMIT_RA(global_ra_timer->t_other);
715 /* switched off due to statistics (statistic module needs all irgs) */
716 #if 0 /* STA needs irgs */
717 #ifdef FIRM_STATISTICS
718 if (! stat_is_active())
719 #endif /* FIRM_STATISTICS */
722 if(be_stat_ev_is_active()) {
734 /* Main interface to the frontend. */
735 void be_main(FILE *file_handle, const char *cup_name)
737 lc_timer_t *t = NULL;
739 /* The user specified another config file to read. do that now. */
740 if(strlen(config_file) > 0) {
743 if((f = fopen(config_file, "rt")) != NULL) {
744 lc_opt_from_file(config_file, f, NULL);
749 if (be_options.timing == BE_TIME_ON) {
750 t = lc_timer_register("bemain", "measure complete bemain loop");
752 if (lc_timer_enter_high_priority()) {
753 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
756 lc_timer_reset_and_start(t);
759 #ifdef FIRM_STATISTICS
760 be_init_stat_file(be_options.stat_file_name, cup_name);
763 /* never build code for pseudo irgs */
764 set_visit_pseudo_irgs(0);
768 be_main_loop(file_handle, cup_name);
770 if (be_options.timing == BE_TIME_ON) {
772 lc_timer_leave_high_priority();
773 if(be_stat_ev_is_active()) {
774 be_stat_ev_l("backend_time", lc_timer_elapsed_msec(t));
776 printf("%-20s: %lu msec\n", "BEMAINLOOP", lc_timer_elapsed_msec(t));
780 #ifdef FIRM_STATISTICS
781 be_close_stat_file();
785 /** The debug info retriever function. */
786 static retrieve_dbg_func retrieve_dbg = NULL;
788 /* Sets a debug info retriever. */
789 void be_set_debug_retrieve(retrieve_dbg_func func) {
793 /* Retrieve the debug info. */
794 const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
796 return retrieve_dbg(dbg, line);
802 int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
805 bs = bitset_alloca(cls->n_regs);
807 bitset_clear_all(bs);
809 assert(bitset_size(bs) == (unsigned) cls->n_regs);
810 arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
812 be_abi_put_ignore_regs(birg->abi, cls, bs);
814 return bitset_popcnt(bs);