2 * Copyright (C) 1995-2008 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
35 #include "lc_opts_enum.h"
46 #include "iredges_t.h"
51 #include "iroptimize.h"
54 #include "irprofile.h"
62 #include "besched_t.h"
63 #include "belistsched.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 "be_dbgout.h"
81 #include "beilpsched.h"
84 /* options visible for anyone */
85 static be_options_t be_options = {
86 DUMP_NONE, /* dump flags */
87 BE_TIME_OFF, /* no timing */
88 0, /* no opt profile */
89 0, /* try to omit frame pointer */
90 BE_VRFY_WARN, /* verification level: warn */
91 BE_SCHED_LIST, /* scheduler: list scheduler */
92 "linux", /* target OS name */
93 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
94 "cplex", /* ilp solver */
95 0, /* enable statistic event dumping */
96 "", /* print stat events */
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_BOOL ("omitfp", "omit frame pointer", &be_options.omit_fp),
152 LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg", &vrfy_var),
153 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
154 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
155 LC_OPT_ENT_ENUM_PTR ("sched", "select a scheduler", &sched_var),
156 LC_OPT_ENT_STR ("os", "specify target operating system", &be_options.target_os, sizeof(be_options.target_os)),
157 #ifdef FIRM_STATISTICS
158 LC_OPT_ENT_BOOL ("statev", "dump statistic events", &be_options.statev),
159 LC_OPT_ENT_STR ("filtev", "filter for stat events (regex if support is active", &be_options.printev, sizeof(be_options.printev)),
163 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
164 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
165 #endif /* WITH_ILP */
169 static be_module_list_entry_t *isa_ifs = NULL;
171 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
176 be_add_module_to_list(&isa_ifs, name, (void*) isa);
179 void be_opt_register(void)
181 lc_opt_entry_t *be_grp;
182 static int run_once = 0;
191 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
192 lc_opt_add_table(be_grp, be_main_options);
194 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
195 &isa_ifs, (void**) &isa_if);
198 /* Parse one argument. */
199 int be_parse_arg(const char *arg) {
200 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
201 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
202 lc_opt_print_help(be_grp, stdout);
205 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
208 /** The be parameters returned by default, all off. */
209 static const backend_params be_params = {
210 0, /* need dword lowering */
211 0, /* don't support inlien assembler yet */
212 NULL, /* no additional opcodes */
213 NULL, /* will be set later */
214 NULL, /* but yet no creator function */
215 NULL, /* context for create_intrinsic_fkt */
216 NULL, /* no if conversion settings */
219 /* Perform schedule verification if requested. */
220 static void be_sched_vrfy(be_irg_t *birg, int vrfy_opt) {
221 if (vrfy_opt == BE_VRFY_WARN) {
222 be_verify_schedule(birg);
224 else if (vrfy_opt == BE_VRFY_ASSERT) {
225 assert(be_verify_schedule(birg) && "Schedule verification failed.");
229 /* Initialize the Firm backend. Must be run BEFORE init_firm()! */
230 const backend_params *be_init(void)
235 if (isa_if->get_params)
236 return isa_if->get_params();
241 * Initializes the main environment for the backend.
243 * @param env an empty environment
244 * @param file_handle the file handle where the output will be written to
246 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
248 memset(env, 0, sizeof(*env));
249 obstack_init(&env->obst);
250 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
251 env->options = &be_options;
253 arch_env_init(env->arch_env, isa_if, file_handle, env);
255 /* Register the irn handler of the architecture */
256 if (arch_isa_get_irn_handler(env->arch_env->isa))
257 arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
260 * Register the node handler of the back end infrastructure.
261 * This irn handler takes care of the platform independent
262 * spill, reload and perm nodes.
264 arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
265 env->phi_handler = be_phi_handler_new(env->arch_env);
266 arch_env_push_irn_handler(env->arch_env, env->phi_handler);
272 static void be_done_env(be_main_env_t *env)
274 env->arch_env->isa->impl->done(env->arch_env->isa);
276 be_phi_handler_free(env->phi_handler);
277 obstack_free(&env->obst, NULL);
281 * A wrapper around a firm dumper. Dumps only, if
284 * @param mask a bitmask containing the reason what will be dumped
285 * @param irg the IR graph to dump
286 * @param suffix the suffix for the dumper
287 * @param dumper the dumper to be called
289 static void dump(int mask, ir_graph *irg, const char *suffix,
290 void (*dumper)(ir_graph *, const char *))
292 if(be_options.dump_flags & mask)
293 be_dump(irg, suffix, dumper);
297 * Prepare a backend graph for code generation and initialize its birg
299 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
301 memset(birg, 0, sizeof(*birg));
303 birg->main_env = env;
305 edges_deactivate_kind(irg, EDGE_KIND_DEP);
306 edges_activate_kind(irg, EDGE_KIND_DEP);
308 dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
310 be_stat_init_irg(env->arch_env, irg);
311 be_do_stat_nodes(irg, "01 Begin");
313 /* set the current graph (this is important for several firm functions) */
314 current_ir_graph = irg;
316 /* Normalize proj nodes. */
317 normalize_proj_nodes(irg);
319 /* we do this before critical edge split. As this produces less returns,
320 because sometimes (= 164.gzip) multiple returns are slower */
321 normalize_n_returns(irg);
323 /* Remove critical edges */
324 remove_critical_cf_edges(irg);
326 /* Ensure, that the ir_edges are computed. */
329 set_irg_phase_state(irg, phase_backend);
331 dump(DUMP_INITIAL, irg, "-prepared", dump_ir_block_graph);
334 #define BE_TIMER_ONLY(code) do { if (be_timing) { code; } } while(0)
338 ir_timer_t *t_codegen;
340 ir_timer_t *t_constr;
341 ir_timer_t *t_finish;
344 ir_timer_t *t_verify;
345 ir_timer_t *t_heights;
347 ir_timer_t *t_execfreq;
348 ir_timer_t *t_ssa_constr;
349 ir_timer_t *t_ra_constr;
350 ir_timer_t *t_ra_prolog;
351 ir_timer_t *t_ra_epilog;
352 ir_timer_t *t_ra_spill;
353 ir_timer_t *t_ra_spill_apply;
354 ir_timer_t *t_ra_color;
355 ir_timer_t *t_ra_ifg;
356 ir_timer_t *t_ra_copymin;
357 ir_timer_t *t_ra_ssa;
358 ir_timer_t *t_ra_other;
361 * The Firm backend main loop.
362 * Do architecture specific lowering for all graphs
363 * and call the architecture specific code generator.
365 * @param file_handle the file handle the output will be written to
366 * @param cup_name name of the compilation unit
368 static void be_main_loop(FILE *file_handle, const char *cup_name)
373 char prof_filename[256];
374 static const char suffix[] = ".prof";
377 ir_graph **irg_list, **backend_irg_list;
379 be_timing = (be_options.timing == BE_TIME_ON);
382 t_abi = ir_timer_register("time_beabi", "be abi introduction");
383 t_codegen = ir_timer_register("time_codegen", "codegeneration");
384 t_sched = ir_timer_register("time_sched", "scheduling");
385 t_constr = ir_timer_register("time_constr", "assure constraints");
386 t_finish = ir_timer_register("time_finish", "graph finish");
387 t_emit = ir_timer_register("time_emiter", "code emiter");
388 t_verify = ir_timer_register("time_verify", "graph verification");
389 t_other = ir_timer_register("time_other", "other");
390 t_heights = ir_timer_register("time_heights", "heights");
391 t_live = ir_timer_register("time_liveness", "be liveness");
392 t_execfreq = ir_timer_register("time_execfreq", "execfreq");
393 t_ssa_constr = ir_timer_register("time_ssa_constr", "ssa reconstruction");
394 t_ra_prolog = ir_timer_register("time_ra_prolog", "regalloc prolog");
395 t_ra_epilog = ir_timer_register("time_ra_epilog", "regalloc epilog");
396 t_ra_constr = ir_timer_register("time_ra_constr", "regalloc constraints");
397 t_ra_spill = ir_timer_register("time_ra_spill", "spiller");
399 = ir_timer_register("time_ra_spill_apply", "apply spills");
400 t_ra_color = ir_timer_register("time_ra_color", "graph coloring");
401 t_ra_ifg = ir_timer_register("time_ra_ifg", "interference graph");
402 t_ra_copymin = ir_timer_register("time_ra_copymin", "copy minimization");
403 t_ra_ssa = ir_timer_register("time_ra_ssadestr", "ssa destruction");
404 t_ra_other = ir_timer_register("time_ra_other", "regalloc other");
407 be_init_env(&env, file_handle);
408 env.cup_name = cup_name;
410 isa = arch_env_get_isa(env.arch_env);
415 /* backend may provide an ordered list of irgs where code should be generated for */
416 irg_list = NEW_ARR_F(ir_graph *, 0);
417 backend_irg_list = arch_isa_get_backend_irg_list(isa, &irg_list);
419 /* we might need 1 birg more for instrumentation constructor */
420 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
421 birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
423 /* First: initialize all birgs */
424 for(i = 0; i < num_birgs; ++i) {
425 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
426 initialize_birg(&birgs[i], irg, &env);
431 Get the filename for the profiling data.
432 Beware: '\0' is already included in sizeof(suffix)
434 memset(prof_filename, 0, sizeof(prof_filename));
435 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
436 strcat(prof_filename, suffix);
439 Next: Either instruments all irgs with profiling code
440 or try to read in profile data for current translation unit.
442 if (be_options.opt_profile) {
443 ir_graph *prof_init_irg = ir_profile_instrument(prof_filename, profile_default);
444 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
446 set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
448 ir_profile_read(prof_filename);
452 for (i = 0; i < num_birgs; ++i) {
453 be_irg_t *birg = &birgs[i];
454 ir_graph *irg = birg->irg;
455 optimization_state_t state;
456 const arch_code_generator_if_t *cg_if;
458 /* set the current graph (this is important for several firm functions) */
459 current_ir_graph = irg;
461 be_sched_init_phase(irg);
463 /* reset the phi handler. */
464 be_phi_handler_reset(env.phi_handler);
466 stat_ev_ctx_push_fobj("bemain_irg", irg);
468 /* stop and reset timers */
469 BE_TIMER_PUSH(t_other); /* t_other */
471 /* Verify the initial graph */
472 BE_TIMER_PUSH(t_verify);
473 if (be_options.vrfy_option == BE_VRFY_WARN) {
474 irg_verify(irg, VRFY_ENFORCE_SSA);
475 be_check_dominance(irg);
476 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
477 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
478 assert(be_check_dominance(irg) && "Dominance verification failed");
480 BE_TIMER_POP(t_verify);
482 /* Get the code generator interface. */
483 cg_if = isa->impl->get_code_generator_if(isa);
485 /* get a code generator for this graph. */
486 birg->cg = cg_if->init(birg);
488 /* some transformations need to be done before abi introduce */
489 arch_code_generator_before_abi(birg->cg);
491 /* implement the ABI conventions. */
492 BE_TIMER_PUSH(t_abi);
493 birg->abi = be_abi_introduce(birg);
496 dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
497 be_do_stat_nodes(irg, "02 Abi");
499 if (be_options.vrfy_option == BE_VRFY_WARN) {
500 be_check_dominance(irg);
501 be_verify_out_edges(irg);
502 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
503 assert(be_verify_out_edges(irg));
504 assert(be_check_dominance(irg) && "Dominance verification failed");
508 stat_ev_ctx_push_str("bemain_phase", "prepare");
509 BE_TIMER_PUSH(t_codegen);
510 arch_code_generator_prepare_graph(birg->cg);
511 BE_TIMER_POP(t_codegen);
512 stat_ev_ctx_pop("bemain_phase");
514 /* reset the phi handler. */
515 be_phi_handler_reset(env.phi_handler);
517 be_do_stat_nodes(irg, "03 Prepare");
519 dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
521 if (be_options.vrfy_option == BE_VRFY_WARN) {
522 be_check_dominance(irg);
523 be_verify_out_edges(irg);
524 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
525 assert(be_verify_out_edges(irg));
526 assert(be_check_dominance(irg) && "Dominance verification failed");
529 BE_TIMER_PUSH(t_execfreq);
531 * Create execution frequencies from profile data or estimate some
533 if (ir_profile_has_data())
534 birg->exec_freq = ir_create_execfreqs_from_profile(irg);
536 birg->exec_freq = compute_execfreq(irg, 10);
537 BE_TIMER_POP(t_execfreq);
540 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
541 /* be_live_chk_compare(birg); */
543 /* let backend prepare scheduling */
544 stat_ev_ctx_push_str("bemain_phase", "before_sched");
545 BE_TIMER_PUSH(t_codegen);
546 arch_code_generator_before_sched(birg->cg);
547 BE_TIMER_POP(t_codegen);
548 stat_ev_ctx_pop("bemain_phase");
550 /* schedule the irg */
551 BE_TIMER_PUSH(t_sched);
552 switch (be_options.scheduler) {
554 fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
556 list_sched(birg, &be_options);
560 be_ilp_sched(birg, &be_options);
562 #endif /* WITH_ILP */
564 BE_TIMER_POP(t_sched);
566 dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
569 BE_TIMER_PUSH(t_verify);
570 be_sched_vrfy(birg, be_options.vrfy_option);
571 BE_TIMER_POP(t_verify);
573 be_do_stat_nodes(irg, "04 Schedule");
575 /* introduce patterns to assure constraints */
576 BE_TIMER_PUSH(t_constr);
577 /* we switch off optimizations here, because they might cause trouble */
578 save_optimization_state(&state);
580 set_opt_normalize(0);
583 assert(!get_opt_cse());
585 /* add Keeps for should_be_different constrained nodes */
586 /* beware: needs schedule due to usage of be_ssa_constr */
587 assure_constraints(birg);
588 BE_TIMER_POP(t_constr);
590 dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
591 be_do_stat_nodes(irg, "05 Constraints");
593 /* stuff needs to be done after scheduling but before register allocation */
594 BE_TIMER_PUSH(t_codegen);
595 arch_code_generator_before_ra(birg->cg);
596 BE_TIMER_POP(t_codegen);
598 /* connect all stack modifying nodes together (see beabi.c) */
599 BE_TIMER_PUSH(t_abi);
600 be_abi_fix_stack_nodes(birg->abi);
603 dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
606 BE_TIMER_PUSH(t_verify);
607 be_sched_vrfy(birg, be_options.vrfy_option);
608 BE_TIMER_POP(t_verify);
610 /* do some statistics */
611 //be_do_stat_reg_pressure(birg);
613 #ifdef FIRM_STATISTICS
614 stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
617 /* Do register allocation */
618 be_allocate_registers(birg);
620 #ifdef FIRM_STATISTICS
621 stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
624 dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
625 be_do_stat_nodes(irg, "06 Register Allocation");
627 /* let the code generator prepare the graph for emitter */
628 BE_TIMER_PUSH(t_finish);
629 arch_code_generator_after_ra(birg->cg);
630 BE_TIMER_POP(t_finish);
632 /* fix stack offsets */
633 BE_TIMER_PUSH(t_abi);
634 be_abi_fix_stack_nodes(birg->abi);
635 be_remove_dead_nodes_from_schedule(birg);
636 be_abi_fix_stack_bias(birg->abi);
639 dump(DUMP_SCHED, irg, "-fix_stack_after_ra", dump_ir_block_graph_sched);
641 BE_TIMER_PUSH(t_finish);
642 arch_code_generator_finish(birg->cg);
643 BE_TIMER_POP(t_finish);
645 dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
647 /* check schedule and register allocation */
648 BE_TIMER_PUSH(t_verify);
649 if (be_options.vrfy_option == BE_VRFY_WARN) {
650 irg_verify(irg, VRFY_ENFORCE_SSA);
651 be_check_dominance(irg);
652 be_verify_out_edges(irg);
653 be_verify_schedule(birg);
654 be_verify_register_allocation(birg);
655 } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
656 assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
657 assert(be_verify_out_edges(irg) && "out edge verification failed");
658 assert(be_check_dominance(irg) && "Dominance verification failed");
659 assert(be_verify_schedule(birg) && "Schedule verification failed");
660 assert(be_verify_register_allocation(birg)
661 && "register allocation verification failed");
664 BE_TIMER_POP(t_verify);
666 /* emit assembler code */
667 BE_TIMER_PUSH(t_emit);
668 arch_code_generator_done(birg->cg);
669 BE_TIMER_POP(t_emit);
671 dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
673 BE_TIMER_PUSH(t_abi);
674 be_abi_free(birg->abi);
677 be_do_stat_nodes(irg, "07 Final");
678 restore_optimization_state(&state);
680 BE_TIMER_POP(t_other);
682 #define STOP_AND_RESET_TIMER(timer) do { ir_timer_stop(timer); ir_timer_reset(timer); } while(0)
684 #define LC_EMIT(timer) \
686 stat_ev_dbl(ir_timer_get_name(timer), ir_timer_elapsed_msec(timer)); \
688 printf("%-20s: %8.3lf msec\n", ir_timer_get_description(timer), (double)ir_timer_elapsed_usec(timer) / 1000.0); \
690 STOP_AND_RESET_TIMER(timer);
695 printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
702 LC_EMIT(t_ssa_constr);
705 LC_EMIT(t_ra_prolog);
707 LC_EMIT(t_ra_spill_apply);
708 LC_EMIT(t_ra_constr);
711 LC_EMIT(t_ra_copymin);
713 LC_EMIT(t_ra_epilog);
722 be_sched_free_phase(irg);
726 /* switched off due to statistics (statistic module needs all irgs) */
727 #if 0 /* STA needs irgs */
728 #ifdef FIRM_STATISTICS
729 if (! stat_is_active())
730 #endif /* FIRM_STATISTICS */
733 stat_ev_ctx_pop("bemain_irg");
739 /* Main interface to the frontend. */
740 void be_main(FILE *file_handle, const char *cup_name)
742 ir_timer_t *t = NULL;
744 /* The user specified another config file to read. do that now. */
745 if(strlen(config_file) > 0) {
748 if((f = fopen(config_file, "rt")) != NULL) {
749 lc_opt_from_file(config_file, f, NULL);
754 if (be_options.timing == BE_TIME_ON) {
755 t = ir_timer_register("bemain", "measure complete bemain loop");
757 if (ir_timer_enter_high_priority()) {
758 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
761 ir_timer_reset_and_start(t);
764 #ifdef FIRM_STATISTICS
765 if (be_options.statev) {
766 const char *dot = strrchr(cup_name, '.');
767 const char *pos = dot ? dot : cup_name + strlen(cup_name);
768 char *buf = alloca(pos - cup_name + 1);
769 strncpy(buf, cup_name, pos - cup_name);
770 buf[pos - cup_name] = '\0';
772 be_options.statev = 1;
773 stat_ev_begin(buf, be_options.printev);
777 /* never build code for pseudo irgs */
778 set_visit_pseudo_irgs(0);
782 be_main_loop(file_handle, cup_name);
784 if (be_options.timing == BE_TIME_ON) {
786 ir_timer_leave_high_priority();
788 stat_ev_dbl("backend_time", ir_timer_elapsed_msec(t));
790 printf("%-20s: %lu msec\n", "BEMAINLOOP", ir_timer_elapsed_msec(t));
794 #ifdef FIRM_STATISTICS
795 if (be_options.statev)
800 unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
803 bs = bitset_alloca(cls->n_regs);
805 bitset_clear_all(bs);
807 assert(bitset_size(bs) == (unsigned)cls->n_regs);
808 arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
810 be_abi_put_ignore_regs(birg->abi, cls, bs);
812 return bitset_popcnt(bs);