2 * Copyright (C) 1995-2011 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
32 #include "lc_opts_enum.h"
42 #include "iredges_t.h"
47 #include "iroptimize.h"
50 #include "irprofile.h"
61 #include "belistsched.h"
64 #include "bechordal_t.h"
66 #include "becopyopt.h"
67 #include "becopystat.h"
68 #include "bessadestr.h"
75 #include "beemitter.h"
77 #define NEW_ID(s) new_id_from_chars(s, sizeof(s) - 1)
79 /* options visible for anyone */
80 static be_options_t be_options = {
81 DUMP_NONE, /* dump flags */
82 BE_TIME_OFF, /* no timing */
83 false, /* profile_generate */
84 false, /* profile_use */
85 0, /* try to omit frame pointer */
86 0, /* create PIC code */
87 BE_VERIFY_WARN, /* verification level: warn */
90 0, /* enable statistic event dumping */
91 "", /* print stat events */
94 /* back end instruction set architecture to use */
95 static const arch_isa_if_t *isa_if = NULL;
97 /* possible dumping options */
98 static const lc_opt_enum_mask_items_t dump_items[] = {
99 { "none", DUMP_NONE },
100 { "initial", DUMP_INITIAL },
102 { "sched", DUMP_SCHED },
103 { "prepared", DUMP_PREPARED },
104 { "regalloc", DUMP_RA },
105 { "final", DUMP_FINAL },
107 { "all", 2 * DUMP_BE - 1 },
111 /* verify options. */
112 static const lc_opt_enum_int_items_t verify_items[] = {
113 { "off", BE_VERIFY_OFF },
114 { "warn", BE_VERIFY_WARN },
115 { "assert", BE_VERIFY_ASSERT },
119 static lc_opt_enum_mask_var_t dump_var = {
120 &be_options.dump_flags, dump_items
123 static lc_opt_enum_int_var_t verify_var = {
124 &be_options.verify_option, verify_items
127 static const lc_opt_table_entry_t be_main_options[] = {
128 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
129 LC_OPT_ENT_BOOL ("omitfp", "omit frame pointer", &be_options.omit_fp),
130 LC_OPT_ENT_BOOL ("pic", "create PIC code", &be_options.pic),
131 LC_OPT_ENT_ENUM_INT ("verify", "verify the backend irg", &verify_var),
132 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
133 LC_OPT_ENT_BOOL ("profilegenerate", "instrument the code for execution count profiling", &be_options.opt_profile_generate),
134 LC_OPT_ENT_BOOL ("profileuse", "use existing profile data", &be_options.opt_profile_use),
135 LC_OPT_ENT_BOOL ("statev", "dump statistic events", &be_options.statev),
136 LC_OPT_ENT_STR ("filtev", "filter for stat events (regex if support is active", be_options.filtev),
138 LC_OPT_ENT_STR("ilp.server", "the ilp server name", be_options.ilp_server),
139 LC_OPT_ENT_STR("ilp.solver", "the ilp solver name", be_options.ilp_solver),
143 static be_module_list_entry_t *isa_ifs = NULL;
144 static bool isa_initialized = false;
146 asm_constraint_flags_t asm_constraint_flags[256];
148 static void initialize_isa(void)
153 isa_initialized = true;
156 static void finish_isa(void)
158 if (isa_initialized) {
160 isa_initialized = false;
164 void be_init_default_asm_constraint_flags(void)
166 asm_constraint_flags['?'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
167 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
168 asm_constraint_flags['&'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
169 | ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER;
170 asm_constraint_flags['%'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
171 | ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE;
172 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
174 asm_constraint_flags['='] = ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
175 | ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
176 asm_constraint_flags['+'] = ASM_CONSTRAINT_FLAG_MODIFIER_READ
177 | ASM_CONSTRAINT_FLAG_MODIFIER_WRITE;
179 asm_constraint_flags['i'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
180 asm_constraint_flags['s'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
181 asm_constraint_flags['E'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
182 asm_constraint_flags['F'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
183 asm_constraint_flags['G'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
184 asm_constraint_flags['H'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
185 asm_constraint_flags['I'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
186 asm_constraint_flags['J'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
187 asm_constraint_flags['K'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
188 asm_constraint_flags['L'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
189 asm_constraint_flags['M'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
190 asm_constraint_flags['N'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
191 asm_constraint_flags['O'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
192 asm_constraint_flags['P'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
194 asm_constraint_flags['m'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
195 asm_constraint_flags['o'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
196 asm_constraint_flags['V'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
197 asm_constraint_flags['<'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
198 asm_constraint_flags['>'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
200 asm_constraint_flags['p'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
201 asm_constraint_flags['0'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
202 asm_constraint_flags['1'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
203 asm_constraint_flags['2'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
204 asm_constraint_flags['3'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
205 asm_constraint_flags['4'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
206 asm_constraint_flags['5'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
207 asm_constraint_flags['6'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
208 asm_constraint_flags['7'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
209 asm_constraint_flags['8'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
210 asm_constraint_flags['9'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
212 asm_constraint_flags['X'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER
213 | ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP
214 | ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
216 /* these should have been catched by the parsing code already */
217 asm_constraint_flags['#'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
218 asm_constraint_flags['*'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
219 asm_constraint_flags[' '] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
220 asm_constraint_flags['\t'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
221 asm_constraint_flags['\n'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
222 asm_constraint_flags['\r'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
225 asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
227 asm_constraint_flags_t flags = ASM_CONSTRAINT_FLAG_NONE;
229 asm_constraint_flags_t tflags;
233 for (c = constraint; *c != '\0'; ++c) {
236 /* 'comment' stuff */
237 while (*c != 0 && *c != ',')
241 /* 'comment' character */
250 tflags = asm_constraint_flags[(int) *c];
254 flags |= isa_if->parse_asm_constraint(&c);
261 flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
262 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
264 flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
265 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
267 flags |= ASM_CONSTRAINT_FLAG_INVALID;
269 if (!(flags & (ASM_CONSTRAINT_FLAG_MODIFIER_READ |
270 ASM_CONSTRAINT_FLAG_MODIFIER_WRITE |
271 ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE |
272 ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ)
274 flags |= ASM_CONSTRAINT_FLAG_MODIFIER_READ;
280 int be_is_valid_clobber(const char *clobber)
284 /* memory is a valid clobber. (the frontend has to detect this case too,
285 * because it has to add memory edges to the asm) */
286 if (strcmp(clobber, "memory") == 0)
288 /* cc (condition code) is always valid */
289 if (strcmp(clobber, "cc") == 0)
292 return isa_if->is_valid_clobber(clobber);
295 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
300 be_add_module_to_list(&isa_ifs, name, (void*) isa);
303 static void be_opt_register(void)
305 lc_opt_entry_t *be_grp;
306 static int run_once = 0;
312 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
313 lc_opt_add_table(be_grp, be_main_options);
315 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
316 &isa_ifs, (void**) &isa_if);
321 /* Parse one argument. */
322 int be_parse_arg(const char *arg)
324 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
325 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
326 lc_opt_print_help_for_entry(be_grp, '-', stdout);
329 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
332 /* Perform schedule verification if requested. */
333 static void be_sched_verify(ir_graph *irg, int verify_opt)
335 if (verify_opt == BE_VERIFY_WARN) {
336 be_verify_schedule(irg);
337 } else if (verify_opt == BE_VERIFY_ASSERT) {
338 assert(be_verify_schedule(irg) && "Schedule verification failed.");
342 /* Initialize the Firm backend. Must be run first in init_firm()! */
343 void firm_be_init(void)
349 /* Finalize the Firm backend. */
350 void firm_be_finish(void)
356 /* Returns the backend parameter */
357 const backend_params *be_get_backend_param(void)
360 return isa_if->get_params();
364 * Initializes the main environment for the backend.
366 * @param env an empty environment
367 * @param file_handle the file handle where the output will be written to
369 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle,
370 const char *compilation_unit_name)
372 memset(env, 0, sizeof(*env));
373 env->options = &be_options;
374 env->file_handle = file_handle;
375 env->ent_trampoline_map = pmap_create();
376 env->pic_trampolines_type = new_type_class(NEW_ID("$PIC_TRAMPOLINE_TYPE"));
377 env->ent_pic_symbol_map = pmap_create();
378 env->pic_symbols_type = new_type_struct(NEW_ID("$PIC_SYMBOLS_TYPE"));
379 env->cup_name = compilation_unit_name;
381 set_class_final(env->pic_trampolines_type, 1);
383 memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
384 env->arch_env = arch_env_begin_codegeneration(isa_if, env);
390 * Called when the be_main_env_t can be destroyed.
392 static void be_done_env(be_main_env_t *env)
394 pmap_destroy(env->ent_trampoline_map);
395 pmap_destroy(env->ent_pic_symbol_map);
396 free_type(env->pic_trampolines_type);
397 free_type(env->pic_symbols_type);
401 * A wrapper around a firm dumper. Dumps only, if
404 * @param mask a bitmask containing the reason what will be dumped
405 * @param irg the IR graph to dump
406 * @param suffix the suffix for the dumper
407 * @param dumper the dumper to be called
409 static void dump(int mask, ir_graph *irg, const char *suffix)
411 if (be_options.dump_flags & mask)
412 dump_ir_graph(irg, suffix);
416 * Prepare a backend graph for code generation and initialize its irg
418 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
420 /* don't duplicate locals in backend when dumping... */
421 ir_remove_dump_flags(ir_dump_flag_consts_local);
423 dump(DUMP_INITIAL, irg, "begin");
427 memset(birg, 0, sizeof(*birg));
429 birg->main_env = env;
430 obstack_init(&birg->obst);
431 birg->lv = be_liveness_new(irg);
433 edges_deactivate_kind(irg, EDGE_KIND_DEP);
434 edges_activate_kind(irg, EDGE_KIND_DEP);
436 /* set the current graph (this is important for several firm functions) */
437 current_ir_graph = irg;
439 /* we do this before critical edge split. As this produces less returns,
440 because sometimes (= 164.gzip) multiple returns are slower */
441 normalize_n_returns(irg);
443 /* Remove critical edges */
444 remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
446 /* For code generation all unreachable code and Bad nodes should be gone */
447 remove_unreachable_code(irg);
450 /* Ensure, that the ir_edges are computed. */
453 set_irg_phase_state(irg, phase_backend);
454 be_info_init_irg(irg);
456 dump(DUMP_INITIAL, irg, "prepared");
461 static const char *get_timer_name(be_timer_id_t id)
464 case T_ABI: return "abi";
465 case T_CODEGEN: return "codegen";
466 case T_RA_PREPARATION: return "ra_preparation";
467 case T_SCHED: return "sched";
468 case T_SPLIT: return "split";
469 case T_CONSTR: return "constr";
470 case T_FINISH: return "finish";
471 case T_EMIT: return "emit";
472 case T_VERIFY: return "verify";
473 case T_OTHER: return "other";
474 case T_HEIGHTS: return "heights";
475 case T_LIVE: return "live";
476 case T_EXECFREQ: return "execfreq";
477 case T_SSA_CONSTR: return "ssa_constr";
478 case T_RA_PROLOG: return "ra_prolog";
479 case T_RA_EPILOG: return "ra_epilog";
480 case T_RA_CONSTR: return "ra_constr";
481 case T_RA_SPILL: return "ra_spill";
482 case T_RA_SPILL_APPLY: return "ra_spill_apply";
483 case T_RA_COLOR: return "ra_color";
484 case T_RA_IFG: return "ra_ifg";
485 case T_RA_COPYMIN: return "ra_copymin";
486 case T_RA_SSA: return "ra_ssa";
487 case T_RA_OTHER: return "ra_other";
491 ir_timer_t *be_timers[T_LAST+1];
493 void be_lower_for_target(void)
499 /* shouldn't lower program twice */
500 assert(get_irp_phase_state() != phase_low);
502 isa_if->lower_for_target();
503 /* set the phase to low */
504 for (i = get_irp_n_irgs(); i > 0;) {
505 ir_graph *irg = get_irp_irg(--i);
506 set_irg_phase_state(irg, phase_low);
508 set_irp_phase_state(phase_low);
512 * The Firm backend main loop.
513 * Do architecture specific lowering for all graphs
514 * and call the architecture specific code generator.
516 * @param file_handle the file handle the output will be written to
517 * @param cup_name name of the compilation unit
519 static void be_main_loop(FILE *file_handle, const char *cup_name)
521 static const char suffix[] = ".prof";
525 char prof_filename[256];
527 arch_env_t *arch_env;
529 be_timing = (be_options.timing == BE_TIME_ON);
531 /* perform target lowering if it didn't happen yet */
532 if (get_irp_phase_state() != phase_low)
533 be_lower_for_target();
536 for (i = 0; i < T_LAST+1; ++i) {
537 be_timers[i] = ir_timer_new();
541 be_init_env(&env, file_handle, cup_name);
543 arch_env = env.arch_env;
545 /* we might need 1 birg more for instrumentation constructor */
546 num_birgs = get_irp_n_irgs();
547 birgs = ALLOCAN(be_irg_t, num_birgs + 1);
551 /* First: initialize all birgs */
552 for (i = 0; i < num_birgs; ++i) {
553 ir_graph *irg = get_irp_irg(i);
554 initialize_birg(&birgs[i], irg, &env);
556 arch_env_handle_intrinsics(arch_env);
559 Get the filename for the profiling data.
560 Beware: '\0' is already included in sizeof(suffix)
562 sprintf(prof_filename, "%.*s%s",
563 (int)(sizeof(prof_filename) - sizeof(suffix)), cup_name, suffix);
565 if (be_options.opt_profile_use) {
566 bool res = ir_profile_read(prof_filename);
568 fprintf(stderr, "Warning: Couldn't read profile data '%s'\n",
572 if (num_birgs > 0 && be_options.opt_profile_generate) {
573 ir_graph *prof_init_irg
574 = ir_profile_instrument(prof_filename);
575 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
580 for (i = 0; i < num_birgs; ++i) {
581 be_irg_t *birg = &birgs[i];
582 ir_graph *irg = birg->irg;
583 optimization_state_t state;
585 /* set the current graph (this is important for several firm functions) */
586 current_ir_graph = irg;
588 if (stat_ev_enabled) {
589 stat_ev_ctx_push_fobj("bemain_irg", irg);
590 be_stat_ev("bemain_insns_start", be_count_insns(irg));
591 be_stat_ev("bemain_blocks_start", be_count_blocks(irg));
594 /* stop and reset timers */
595 be_timer_push(T_OTHER);
597 /* Verify the initial graph */
598 be_timer_push(T_VERIFY);
599 if (be_options.verify_option == BE_VERIFY_WARN) {
600 irg_verify(irg, VERIFY_ENFORCE_SSA);
601 be_check_dominance(irg);
602 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
603 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
604 assert(be_check_dominance(irg) && "Dominance verification failed");
606 be_timer_pop(T_VERIFY);
608 /* get a code generator for this graph. */
609 arch_env->impl->init_graph(irg);
611 /* some transformations need to be done before abi introduce */
612 if (arch_env->impl->before_abi != NULL)
613 arch_env->impl->before_abi(irg);
615 /* implement the ABI conventions. */
616 if (!arch_env->custom_abi) {
617 be_timer_push(T_ABI);
618 be_abi_introduce(irg);
620 dump(DUMP_ABI, irg, "abi");
623 /* We can't have Bad-blocks or critical edges in the backend.
624 * Before removing Bads, we remove unreachable code. */
625 optimize_graph_df(irg);
626 remove_critical_cf_edges(irg);
629 /* We often have dead code reachable through out-edges here. So for
630 * now we rebuild edges (as we need correct user count for code
632 edges_deactivate(irg);
635 dump(DUMP_PREPARED, irg, "before-code-selection");
637 if (be_options.verify_option == BE_VERIFY_WARN) {
638 be_check_dominance(irg);
639 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
640 assert(be_check_dominance(irg) && "Dominance verification failed");
643 /* perform codeselection */
644 be_timer_push(T_CODEGEN);
645 if (arch_env->impl->prepare_graph != NULL)
646 arch_env->impl->prepare_graph(irg);
647 be_timer_pop(T_CODEGEN);
649 if (be_options.verify_option == BE_VERIFY_WARN) {
650 be_check_dominance(irg);
651 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
652 assert(be_check_dominance(irg) && "Dominance verification failed");
655 dump(DUMP_PREPARED, irg, "code-selection");
657 be_timer_push(T_EXECFREQ);
659 * Create execution frequencies from profile data or estimate some
661 if (ir_profile_has_data())
662 birg->exec_freq = ir_create_execfreqs_from_profile(irg);
664 /* TODO: edges are corrupt for EDGE_KIND_BLOCK after the local
665 * optimize graph phase merges blocks in the x86 backend */
666 edges_deactivate(irg);
667 birg->exec_freq = compute_execfreq(irg, 10);
669 be_timer_pop(T_EXECFREQ);
672 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
673 /* be_live_chk_compare(irg); */
675 /* schedule the irg */
676 be_timer_push(T_SCHED);
677 be_schedule_graph(irg);
678 be_timer_pop(T_SCHED);
680 dump(DUMP_SCHED, irg, "sched");
683 be_timer_push(T_VERIFY);
684 be_sched_verify(irg, be_options.verify_option);
685 be_timer_pop(T_VERIFY);
687 /* introduce patterns to assure constraints */
688 be_timer_push(T_CONSTR);
689 /* we switch off optimizations here, because they might cause trouble */
690 save_optimization_state(&state);
694 /* add Keeps for should_be_different constrained nodes */
695 /* beware: needs schedule due to usage of be_ssa_constr */
696 assure_constraints(irg);
697 be_timer_pop(T_CONSTR);
699 dump(DUMP_SCHED, irg, "assured");
701 /* stuff needs to be done after scheduling but before register allocation */
702 be_timer_push(T_RA_PREPARATION);
703 if (arch_env->impl->before_ra != NULL)
704 arch_env->impl->before_ra(irg);
705 be_timer_pop(T_RA_PREPARATION);
707 /* connect all stack modifying nodes together (see beabi.c) */
708 be_timer_push(T_ABI);
709 be_abi_fix_stack_nodes(irg);
712 dump(DUMP_SCHED, irg, "fix_stack");
715 be_timer_push(T_VERIFY);
716 be_sched_verify(irg, be_options.verify_option);
717 be_timer_pop(T_VERIFY);
719 if (stat_ev_enabled) {
720 stat_ev_dbl("bemain_costs_before_ra",
721 be_estimate_irg_costs(irg, birg->exec_freq));
722 be_stat_ev("bemain_insns_before_ra", be_count_insns(irg));
723 be_stat_ev("bemain_blocks_before_ra", be_count_blocks(irg));
726 /* Do register allocation */
727 be_allocate_registers(irg);
729 stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
731 dump(DUMP_RA, irg, "ra");
733 be_timer_push(T_FINISH);
734 if (arch_env->impl->finish_graph != NULL)
735 arch_env->impl->finish_graph(irg);
736 be_timer_pop(T_FINISH);
738 dump(DUMP_FINAL, irg, "finish");
740 if (stat_ev_enabled) {
741 be_stat_ev("bemain_insns_finish", be_count_insns(irg));
742 be_stat_ev("bemain_blocks_finish", be_count_blocks(irg));
745 /* check schedule and register allocation */
746 be_timer_push(T_VERIFY);
747 if (be_options.verify_option == BE_VERIFY_WARN) {
748 irg_verify(irg, VERIFY_ENFORCE_SSA);
749 be_check_dominance(irg);
750 be_verify_schedule(irg);
751 be_verify_register_allocation(irg);
752 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
753 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
754 assert(be_check_dominance(irg) && "Dominance verification failed");
755 assert(be_verify_schedule(irg) && "Schedule verification failed");
756 assert(be_verify_register_allocation(irg)
757 && "register allocation verification failed");
760 be_timer_pop(T_VERIFY);
762 /* emit assembler code */
763 be_timer_push(T_EMIT);
764 if (arch_env->impl->emit != NULL)
765 arch_env->impl->emit(irg);
766 be_timer_pop(T_EMIT);
768 dump(DUMP_FINAL, irg, "end");
770 if (!arch_env->custom_abi) {
771 be_timer_push(T_ABI);
776 restore_optimization_state(&state);
778 be_timer_pop(T_OTHER);
782 if (stat_ev_enabled) {
783 for (t = T_FIRST; t < T_LAST+1; ++t) {
785 snprintf(buf, sizeof(buf), "bemain_time_%s",
787 stat_ev_dbl(buf, ir_timer_elapsed_usec(be_timers[i]));
790 printf("==>> IRG %s <<==\n",
791 get_entity_name(get_irg_entity(irg)));
792 for (t = T_FIRST; t < T_LAST+1; ++t) {
793 double val = ir_timer_elapsed_usec(be_timers[t]) / 1000.0;
794 printf("%-20s: %8.3lf msec\n", get_timer_name(t), val);
797 for (t = T_FIRST; t < T_LAST+1; ++t) {
798 ir_timer_stop(be_timers[t]);
799 ir_timer_reset(be_timers[t]);
804 stat_ev_ctx_pop("bemain_irg");
807 arch_env_end_codegeneration(arch_env);
815 /* Main interface to the frontend. */
816 void be_main(FILE *file_handle, const char *cup_name)
818 ir_timer_t *t = NULL;
820 if (be_options.timing == BE_TIME_ON) {
823 if (ir_timer_enter_high_priority()) {
824 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
827 ir_timer_reset_and_start(t);
830 if (be_options.statev) {
831 const char *dot = strrchr(cup_name, '.');
832 const char *pos = dot ? dot : cup_name + strlen(cup_name);
833 char *buf = ALLOCAN(char, pos - cup_name + 1);
834 strncpy(buf, cup_name, pos - cup_name);
835 buf[pos - cup_name] = '\0';
837 be_options.statev = 1;
838 stat_ev_begin(buf, be_options.filtev);
839 stat_ev_ctx_push_str("bemain_compilation_unit", cup_name);
842 be_main_loop(file_handle, cup_name);
844 if (be_options.timing == BE_TIME_ON) {
846 ir_timer_leave_high_priority();
847 if (stat_ev_enabled) {
848 stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
850 double val = ir_timer_elapsed_usec(t) / 1000.0;
851 printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
855 if (be_options.statev) {
856 stat_ev_ctx_pop("bemain_compilation_unit");
861 static int do_lower_for_target(ir_prog *irp, void *context)
863 be_lower_for_target();
869 ir_prog_pass_t *lower_for_target_pass(const char *name)
871 ir_prog_pass_t *pass = XMALLOCZ(ir_prog_pass_t);
872 return def_prog_pass_constructor(pass,
873 name ? name : "lower_for_target",
874 do_lower_for_target);