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
33 #include "lc_opts_enum.h"
43 #include "iredges_t.h"
48 #include "iroptimize.h"
51 #include "irprofile.h"
61 #include "belistsched.h"
64 #include "bechordal_t.h"
66 #include "becopyopt.h"
67 #include "becopystat.h"
68 #include "bessadestr.h"
73 #include "be_dbgout.h"
76 #include "beemitter.h"
78 #define NEW_ID(s) new_id_from_chars(s, sizeof(s) - 1)
80 /* options visible for anyone */
81 static be_options_t be_options = {
82 DUMP_NONE, /* dump flags */
83 BE_TIME_OFF, /* no timing */
84 false, /* profile_generate */
85 false, /* profile_use */
86 0, /* try to omit frame pointer */
87 0, /* create PIC code */
88 BE_VERIFY_WARN, /* verification level: warn */
91 0, /* enable statistic event dumping */
92 "", /* print stat events */
95 /* back end instruction set architecture to use */
96 static const arch_isa_if_t *isa_if = NULL;
98 /* possible dumping options */
99 static const lc_opt_enum_mask_items_t dump_items[] = {
100 { "none", DUMP_NONE },
101 { "initial", DUMP_INITIAL },
103 { "sched", DUMP_SCHED },
104 { "prepared", DUMP_PREPARED },
105 { "regalloc", DUMP_RA },
106 { "final", DUMP_FINAL },
108 { "all", 2 * DUMP_BE - 1 },
112 /* verify options. */
113 static const lc_opt_enum_int_items_t verify_items[] = {
114 { "off", BE_VERIFY_OFF },
115 { "warn", BE_VERIFY_WARN },
116 { "assert", BE_VERIFY_ASSERT },
120 static lc_opt_enum_mask_var_t dump_var = {
121 &be_options.dump_flags, dump_items
124 static lc_opt_enum_int_var_t verify_var = {
125 &be_options.verify_option, verify_items
128 static const lc_opt_table_entry_t be_main_options[] = {
129 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
130 LC_OPT_ENT_BOOL ("omitfp", "omit frame pointer", &be_options.omit_fp),
131 LC_OPT_ENT_BOOL ("pic", "create PIC code", &be_options.pic),
132 LC_OPT_ENT_ENUM_INT ("verify", "verify the backend irg", &verify_var),
133 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
134 LC_OPT_ENT_BOOL ("profilegenerate", "instrument the code for execution count profiling", &be_options.opt_profile_generate),
135 LC_OPT_ENT_BOOL ("profileuse", "use existing profile data", &be_options.opt_profile_use),
136 LC_OPT_ENT_BOOL ("statev", "dump statistic events", &be_options.statev),
137 LC_OPT_ENT_STR ("filtev", "filter for stat events (regex if support is active", be_options.filtev),
139 LC_OPT_ENT_STR("ilp.server", "the ilp server name", be_options.ilp_server),
140 LC_OPT_ENT_STR("ilp.solver", "the ilp solver name", be_options.ilp_solver),
144 static be_module_list_entry_t *isa_ifs = NULL;
147 asm_constraint_flags_t asm_constraint_flags[256];
149 void be_init_default_asm_constraint_flags(void)
151 asm_constraint_flags['?'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
152 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
153 asm_constraint_flags['&'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
154 | ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER;
155 asm_constraint_flags['%'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
156 | ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE;
157 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
159 asm_constraint_flags['='] = ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
160 | ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
161 asm_constraint_flags['+'] = ASM_CONSTRAINT_FLAG_MODIFIER_READ
162 | ASM_CONSTRAINT_FLAG_MODIFIER_WRITE;
164 asm_constraint_flags['i'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
165 asm_constraint_flags['s'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
166 asm_constraint_flags['E'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
167 asm_constraint_flags['F'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
168 asm_constraint_flags['G'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
169 asm_constraint_flags['H'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
170 asm_constraint_flags['I'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
171 asm_constraint_flags['J'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
172 asm_constraint_flags['K'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
173 asm_constraint_flags['L'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
174 asm_constraint_flags['M'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
175 asm_constraint_flags['N'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
176 asm_constraint_flags['O'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
177 asm_constraint_flags['P'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
179 asm_constraint_flags['m'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
180 asm_constraint_flags['o'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
181 asm_constraint_flags['V'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
182 asm_constraint_flags['<'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
183 asm_constraint_flags['>'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
185 asm_constraint_flags['p'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
186 asm_constraint_flags['0'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
187 asm_constraint_flags['1'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
188 asm_constraint_flags['2'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
189 asm_constraint_flags['3'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
190 asm_constraint_flags['4'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
191 asm_constraint_flags['5'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
192 asm_constraint_flags['6'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
193 asm_constraint_flags['7'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
194 asm_constraint_flags['8'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
195 asm_constraint_flags['9'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
197 asm_constraint_flags['X'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER
198 | ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP
199 | ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
201 /* these should have been catched by the parsing code already */
202 asm_constraint_flags['#'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
203 asm_constraint_flags['*'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
204 asm_constraint_flags[' '] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
205 asm_constraint_flags['\t'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
206 asm_constraint_flags['\n'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
207 asm_constraint_flags['\r'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
210 asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
212 asm_constraint_flags_t flags = ASM_CONSTRAINT_FLAG_NONE;
214 asm_constraint_flags_t tflags;
216 for (c = constraint; *c != '\0'; ++c) {
219 /* 'comment' stuff */
220 while (*c != 0 && *c != ',')
224 /* 'comment' character */
233 tflags = asm_constraint_flags[(int) *c];
237 flags |= isa_if->parse_asm_constraint(&c);
244 flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
245 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
247 flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
248 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
250 flags |= ASM_CONSTRAINT_FLAG_INVALID;
252 if (!(flags & (ASM_CONSTRAINT_FLAG_MODIFIER_READ |
253 ASM_CONSTRAINT_FLAG_MODIFIER_WRITE |
254 ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE |
255 ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ)
257 flags |= ASM_CONSTRAINT_FLAG_MODIFIER_READ;
263 int be_is_valid_clobber(const char *clobber)
265 /* memory is a valid clobber. (the frontend has to detect this case too,
266 * because it has to add memory edges to the asm) */
267 if (strcmp(clobber, "memory") == 0)
269 /* cc (condition code) is always valid */
270 if (strcmp(clobber, "cc") == 0)
273 return isa_if->is_valid_clobber(clobber);
276 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
281 be_add_module_to_list(&isa_ifs, name, (void*) isa);
284 void be_opt_register(void)
286 lc_opt_entry_t *be_grp;
287 static int run_once = 0;
293 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
294 lc_opt_add_table(be_grp, be_main_options);
296 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
297 &isa_ifs, (void**) &isa_if);
302 /* Parse one argument. */
303 int be_parse_arg(const char *arg)
305 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
306 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
307 lc_opt_print_help_for_entry(be_grp, '-', stdout);
310 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
313 /* Perform schedule verification if requested. */
314 static void be_sched_verify(ir_graph *irg, int verify_opt)
316 if (verify_opt == BE_VERIFY_WARN) {
317 be_verify_schedule(irg);
318 } else if (verify_opt == BE_VERIFY_ASSERT) {
319 assert(be_verify_schedule(irg) && "Schedule verification failed.");
323 /* Initialize the Firm backend. Must be run first in init_firm()! */
324 void firm_be_init(void)
330 /* Finalize the Firm backend. */
331 void firm_be_finish(void)
336 /* Returns the backend parameter */
337 const backend_params *be_get_backend_param(void)
339 return isa_if->get_params();
343 * Initializes the main environment for the backend.
345 * @param env an empty environment
346 * @param file_handle the file handle where the output will be written to
348 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
350 memset(env, 0, sizeof(*env));
351 env->options = &be_options;
352 env->ent_trampoline_map = pmap_create();
353 env->pic_trampolines_type = new_type_class(NEW_ID("$PIC_TRAMPOLINE_TYPE"));
354 env->ent_pic_symbol_map = pmap_create();
355 env->pic_symbols_type = new_type_struct(NEW_ID("$PIC_SYMBOLS_TYPE"));
357 remove_irp_type(env->pic_trampolines_type);
358 remove_irp_type(env->pic_symbols_type);
359 set_class_final(env->pic_trampolines_type, 1);
361 memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
362 env->arch_env = arch_env_init(isa_if, file_handle, env);
368 * Called when the be_main_env_t can be destroyed.
370 static void be_done_env(be_main_env_t *env)
372 pmap_destroy(env->ent_trampoline_map);
373 pmap_destroy(env->ent_pic_symbol_map);
374 free_type(env->pic_trampolines_type);
375 free_type(env->pic_symbols_type);
379 * A wrapper around a firm dumper. Dumps only, if
382 * @param mask a bitmask containing the reason what will be dumped
383 * @param irg the IR graph to dump
384 * @param suffix the suffix for the dumper
385 * @param dumper the dumper to be called
387 static void dump(int mask, ir_graph *irg, const char *suffix)
389 if (be_options.dump_flags & mask)
390 dump_ir_graph(irg, suffix);
394 * Prepare a backend graph for code generation and initialize its irg
396 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
398 /* don't duplicate locals in backend when dumping... */
399 ir_remove_dump_flags(ir_dump_flag_consts_local);
401 dump(DUMP_INITIAL, irg, "begin");
405 memset(birg, 0, sizeof(*birg));
407 birg->main_env = env;
408 obstack_init(&birg->obst);
410 edges_deactivate_kind(irg, EDGE_KIND_DEP);
411 edges_activate_kind(irg, EDGE_KIND_DEP);
413 /* set the current graph (this is important for several firm functions) */
414 current_ir_graph = irg;
416 /* For code generation all unreachable code and Bad nodes should be gone */
417 remove_unreachable_blocks(irg);
420 /* we do this before critical edge split. As this produces less returns,
421 because sometimes (= 164.gzip) multiple returns are slower */
422 normalize_n_returns(irg);
424 /* Remove critical edges */
425 remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
427 /* Ensure, that the ir_edges are computed. */
430 set_irg_phase_state(irg, phase_backend);
431 be_info_init_irg(irg);
433 dump(DUMP_INITIAL, irg, "prepared");
438 static const char *get_timer_name(be_timer_id_t id)
441 case T_ABI: return "abi";
442 case T_CODEGEN: return "codegen";
443 case T_RA_PREPARATION: return "ra_preparation";
444 case T_SCHED: return "sched";
445 case T_CONSTR: return "constr";
446 case T_FINISH: return "finish";
447 case T_EMIT: return "emit";
448 case T_VERIFY: return "verify";
449 case T_OTHER: return "other";
450 case T_HEIGHTS: return "heights";
451 case T_LIVE: return "live";
452 case T_EXECFREQ: return "execfreq";
453 case T_SSA_CONSTR: return "ssa_constr";
454 case T_RA_PROLOG: return "ra_prolog";
455 case T_RA_EPILOG: return "ra_epilog";
456 case T_RA_CONSTR: return "ra_constr";
457 case T_RA_SPILL: return "ra_spill";
458 case T_RA_SPILL_APPLY: return "ra_spill_apply";
459 case T_RA_COLOR: return "ra_color";
460 case T_RA_IFG: return "ra_ifg";
461 case T_RA_COPYMIN: return "ra_copymin";
462 case T_RA_SSA: return "ra_ssa";
463 case T_RA_OTHER: return "ra_other";
467 ir_timer_t *be_timers[T_LAST+1];
469 void be_lower_for_target(void)
473 isa_if->lower_for_target();
474 /* set the phase to low */
475 for (i = get_irp_n_irgs(); i > 0;) {
476 ir_graph *irg = get_irp_irg(--i);
477 set_irg_phase_state(irg, phase_low);
479 set_irp_phase_state(phase_low);
482 static void emit_global_asms(void)
484 size_t n = get_irp_n_asms();
486 for (i = 0; i < n; ++i) {
487 be_emit_cstring("#APP\n");
488 be_emit_ident(get_irp_asm(i));
489 be_emit_cstring("\n#NO_APP\n");
494 * The Firm backend main loop.
495 * Do architecture specific lowering for all graphs
496 * and call the architecture specific code generator.
498 * @param file_handle the file handle the output will be written to
499 * @param cup_name name of the compilation unit
501 static void be_main_loop(FILE *file_handle, const char *cup_name)
503 static const char suffix[] = ".prof";
507 char prof_filename[256];
509 ir_graph **irg_list, **backend_irg_list;
510 arch_env_t *arch_env;
512 be_timing = (be_options.timing == BE_TIME_ON);
515 for (i = 0; i < T_LAST+1; ++i) {
516 be_timers[i] = ir_timer_new();
520 be_init_env(&env, file_handle);
521 env.cup_name = cup_name;
524 be_dbg_unit_begin(cup_name);
529 arch_env = env.arch_env;
531 /* backend may provide an ordered list of irgs where code should be
533 irg_list = NEW_ARR_F(ir_graph *, 0);
534 backend_irg_list = arch_env_get_backend_irg_list(arch_env, &irg_list);
536 /* we might need 1 birg more for instrumentation constructor */
537 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
538 birgs = ALLOCAN(be_irg_t, num_birgs + 1);
542 /* First: initialize all birgs */
543 for (i = 0; i < num_birgs; ++i) {
544 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
545 initialize_birg(&birgs[i], irg, &env);
547 arch_env_handle_intrinsics(arch_env);
551 Get the filename for the profiling data.
552 Beware: '\0' is already included in sizeof(suffix)
554 sprintf(prof_filename, "%.*s%s",
555 (int)(sizeof(prof_filename) - sizeof(suffix)), cup_name, suffix);
557 if (be_options.opt_profile_use) {
558 bool res = ir_profile_read(prof_filename);
560 fprintf(stderr, "Warning: Couldn't read profile data '%s'\n",
564 if (be_options.opt_profile_generate) {
565 ir_graph *prof_init_irg
566 = ir_profile_instrument(prof_filename);
567 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
572 for (i = 0; i < num_birgs; ++i) {
573 be_irg_t *birg = &birgs[i];
574 ir_graph *irg = birg->irg;
575 optimization_state_t state;
577 /* set the current graph (this is important for several firm functions) */
578 current_ir_graph = irg;
580 if (stat_ev_enabled) {
581 stat_ev_ctx_push_fobj("bemain_irg", irg);
582 be_stat_ev("bemain_insns_start", be_count_insns(irg));
583 be_stat_ev("bemain_blocks_start", be_count_blocks(irg));
586 /* stop and reset timers */
587 be_timer_push(T_OTHER);
589 /* Verify the initial graph */
590 be_timer_push(T_VERIFY);
591 if (be_options.verify_option == BE_VERIFY_WARN) {
592 irg_verify(irg, VERIFY_ENFORCE_SSA);
593 be_check_dominance(irg);
594 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
595 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
596 assert(be_check_dominance(irg) && "Dominance verification failed");
598 be_timer_pop(T_VERIFY);
600 /* get a code generator for this graph. */
601 arch_env->impl->init_graph(irg);
603 /* some transformations need to be done before abi introduce */
604 if (arch_env->impl->before_abi != NULL)
605 arch_env->impl->before_abi(irg);
607 /* implement the ABI conventions. */
608 if (!arch_env->custom_abi) {
609 be_timer_push(T_ABI);
610 be_abi_introduce(irg);
612 dump(DUMP_ABI, irg, "abi");
615 /* We can't have Bad-blocks or critical edges in the backend.
616 * Before removing Bads, we remove unreachable code. */
617 optimize_graph_df(irg);
618 remove_critical_cf_edges(irg);
621 /* We often have dead code reachable through out-edges here. So for
622 * now we rebuild edges (as we need correct user count for code
624 edges_deactivate(irg);
627 dump(DUMP_PREPARED, irg, "before-code-selection");
629 if (be_options.verify_option == BE_VERIFY_WARN) {
630 be_check_dominance(irg);
631 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
632 assert(be_check_dominance(irg) && "Dominance verification failed");
635 /* perform codeselection */
636 be_timer_push(T_CODEGEN);
637 if (arch_env->impl->prepare_graph != NULL)
638 arch_env->impl->prepare_graph(irg);
639 be_timer_pop(T_CODEGEN);
641 if (be_options.verify_option == BE_VERIFY_WARN) {
642 be_check_dominance(irg);
643 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
644 assert(be_check_dominance(irg) && "Dominance verification failed");
647 dump(DUMP_PREPARED, irg, "code-selection");
649 be_timer_push(T_EXECFREQ);
651 * Create execution frequencies from profile data or estimate some
653 if (ir_profile_has_data())
654 birg->exec_freq = ir_create_execfreqs_from_profile(irg);
656 /* TODO: edges are corrupt for EDGE_KIND_BLOCK after the local
657 * optimize graph phase merges blocks in the x86 backend */
658 edges_deactivate(irg);
659 birg->exec_freq = compute_execfreq(irg, 10);
661 be_timer_pop(T_EXECFREQ);
664 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
665 /* be_live_chk_compare(irg); */
667 /* schedule the irg */
668 be_timer_push(T_SCHED);
669 be_schedule_graph(irg);
670 be_timer_pop(T_SCHED);
672 dump(DUMP_SCHED, irg, "sched");
675 be_timer_push(T_VERIFY);
676 be_sched_verify(irg, be_options.verify_option);
677 be_timer_pop(T_VERIFY);
679 /* introduce patterns to assure constraints */
680 be_timer_push(T_CONSTR);
681 /* we switch off optimizations here, because they might cause trouble */
682 save_optimization_state(&state);
686 /* add Keeps for should_be_different constrained nodes */
687 /* beware: needs schedule due to usage of be_ssa_constr */
688 assure_constraints(irg);
689 be_timer_pop(T_CONSTR);
691 dump(DUMP_SCHED, irg, "assured");
693 /* stuff needs to be done after scheduling but before register allocation */
694 be_timer_push(T_RA_PREPARATION);
695 if (arch_env->impl->before_ra != NULL)
696 arch_env->impl->before_ra(irg);
697 be_timer_pop(T_RA_PREPARATION);
699 /* connect all stack modifying nodes together (see beabi.c) */
700 be_timer_push(T_ABI);
701 be_abi_fix_stack_nodes(irg);
704 dump(DUMP_SCHED, irg, "fix_stack");
707 be_timer_push(T_VERIFY);
708 be_sched_verify(irg, be_options.verify_option);
709 be_timer_pop(T_VERIFY);
711 if (stat_ev_enabled) {
712 stat_ev_dbl("bemain_costs_before_ra",
713 be_estimate_irg_costs(irg, birg->exec_freq));
714 be_stat_ev("bemain_insns_before_ra", be_count_insns(irg));
715 be_stat_ev("bemain_blocks_before_ra", be_count_blocks(irg));
718 /* Do register allocation */
719 be_allocate_registers(irg);
721 stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
723 dump(DUMP_RA, irg, "ra");
725 be_timer_push(T_FINISH);
726 if (arch_env->impl->finish != NULL)
727 arch_env->impl->finish(irg);
728 be_timer_pop(T_FINISH);
730 dump(DUMP_FINAL, irg, "finish");
732 if (stat_ev_enabled) {
733 be_stat_ev("bemain_insns_finish", be_count_insns(irg));
734 be_stat_ev("bemain_blocks_finish", be_count_blocks(irg));
737 /* check schedule and register allocation */
738 be_timer_push(T_VERIFY);
739 if (be_options.verify_option == BE_VERIFY_WARN) {
740 irg_verify(irg, VERIFY_ENFORCE_SSA);
741 be_check_dominance(irg);
742 be_verify_schedule(irg);
743 be_verify_register_allocation(irg);
744 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
745 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
746 assert(be_check_dominance(irg) && "Dominance verification failed");
747 assert(be_verify_schedule(irg) && "Schedule verification failed");
748 assert(be_verify_register_allocation(irg)
749 && "register allocation verification failed");
752 be_timer_pop(T_VERIFY);
754 /* emit assembler code */
755 be_timer_push(T_EMIT);
756 if (arch_env->impl->emit != NULL)
757 arch_env->impl->emit(irg);
758 be_timer_pop(T_EMIT);
760 dump(DUMP_FINAL, irg, "end");
762 if (!arch_env->custom_abi) {
763 be_timer_push(T_ABI);
768 restore_optimization_state(&state);
770 be_timer_pop(T_OTHER);
774 if (stat_ev_enabled) {
775 for (t = T_FIRST; t < T_LAST+1; ++t) {
777 snprintf(buf, sizeof(buf), "bemain_time_%s",
779 stat_ev_dbl(buf, ir_timer_elapsed_usec(be_timers[i]));
782 printf("==>> IRG %s <<==\n",
783 get_entity_name(get_irg_entity(irg)));
784 for (t = T_FIRST; t < T_LAST+1; ++t) {
785 double val = ir_timer_elapsed_usec(be_timers[t]) / 1000.0;
786 printf("%-20s: %8.3lf msec\n", get_timer_name(t), val);
789 for (t = T_FIRST; t < T_LAST+1; ++t) {
790 ir_timer_stop(be_timers[t]);
791 ir_timer_reset(be_timers[t]);
796 stat_ev_ctx_pop("bemain_irg");
799 arch_env_done(arch_env);
810 /* Main interface to the frontend. */
811 void be_main(FILE *file_handle, const char *cup_name)
813 ir_timer_t *t = NULL;
815 if (be_options.timing == BE_TIME_ON) {
818 if (ir_timer_enter_high_priority()) {
819 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
822 ir_timer_reset_and_start(t);
825 if (be_options.statev) {
826 const char *dot = strrchr(cup_name, '.');
827 const char *pos = dot ? dot : cup_name + strlen(cup_name);
828 char *buf = ALLOCAN(char, pos - cup_name + 1);
829 strncpy(buf, cup_name, pos - cup_name);
830 buf[pos - cup_name] = '\0';
832 be_options.statev = 1;
833 stat_ev_begin(buf, be_options.filtev);
834 stat_ev_ctx_push_str("bemain_compilation_unit", cup_name);
837 be_main_loop(file_handle, cup_name);
839 if (be_options.timing == BE_TIME_ON) {
841 ir_timer_leave_high_priority();
842 if (stat_ev_enabled) {
843 stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
845 double val = ir_timer_elapsed_usec(t) / 1000.0;
846 printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
850 if (be_options.statev) {
851 stat_ev_ctx_pop("bemain_compilation_unit");
856 static int do_lower_for_target(ir_prog *irp, void *context)
858 be_lower_for_target();
864 ir_prog_pass_t *lower_for_target_pass(const char *name)
866 ir_prog_pass_t *pass = XMALLOCZ(ir_prog_pass_t);
867 return def_prog_pass_constructor(pass,
868 name ? name : "lower_for_target",
869 do_lower_for_target);