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
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"
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 0, /* no opt profile */
84 0, /* try to omit frame pointer */
85 0, /* create PIC code */
86 0, /* create gprof compatible profiling code */
87 BE_VERIFY_WARN, /* verification level: warn */
88 "linux", /* target OS name */
89 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
90 "cplex", /* ilp solver */
91 0, /* enable statistic event dumping */
92 "", /* print stat events */
96 static char config_file[256] = { 0 };
98 /* back end instruction set architecture to use */
99 static const arch_isa_if_t *isa_if = NULL;
101 /* possible dumping options */
102 static const lc_opt_enum_mask_items_t dump_items[] = {
103 { "none", DUMP_NONE },
104 { "initial", DUMP_INITIAL },
106 { "sched", DUMP_SCHED },
107 { "prepared", DUMP_PREPARED },
108 { "regalloc", DUMP_RA },
109 { "final", DUMP_FINAL },
111 { "all", 2 * DUMP_BE - 1 },
115 /* verify options. */
116 static const lc_opt_enum_int_items_t verify_items[] = {
117 { "off", BE_VERIFY_OFF },
118 { "warn", BE_VERIFY_WARN },
119 { "assert", BE_VERIFY_ASSERT },
123 static lc_opt_enum_mask_var_t dump_var = {
124 &be_options.dump_flags, dump_items
127 static lc_opt_enum_int_var_t verify_var = {
128 &be_options.verify_option, verify_items
131 static const lc_opt_table_entry_t be_main_options[] = {
132 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
133 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
134 LC_OPT_ENT_BOOL ("omitfp", "omit frame pointer", &be_options.omit_fp),
135 LC_OPT_ENT_BOOL ("pic", "create PIC code", &be_options.pic),
136 LC_OPT_ENT_BOOL ("gprof", "create gprof profiling code", &be_options.gprof),
137 LC_OPT_ENT_ENUM_PTR ("verify", "verify the backend irg", &verify_var),
138 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
139 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
140 LC_OPT_ENT_STR ("os", "specify target operating system", &be_options.target_os, sizeof(be_options.target_os)),
141 #ifdef FIRM_STATISTICS
142 LC_OPT_ENT_BOOL ("statev", "dump statistic events", &be_options.statev),
143 LC_OPT_ENT_STR ("filtev", "filter for stat events (regex if support is active", &be_options.filtev, sizeof(be_options.filtev)),
147 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
148 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
149 #endif /* WITH_ILP */
153 static be_module_list_entry_t *isa_ifs = NULL;
156 asm_constraint_flags_t asm_constraint_flags[256];
158 void be_init_default_asm_constraint_flags(void)
160 asm_constraint_flags['?'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
161 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
162 asm_constraint_flags['&'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
163 | ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER;
164 asm_constraint_flags['%'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
165 | ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE;
166 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
168 asm_constraint_flags['='] = ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
169 | ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
170 asm_constraint_flags['+'] = ASM_CONSTRAINT_FLAG_MODIFIER_READ
171 | ASM_CONSTRAINT_FLAG_MODIFIER_WRITE;
173 asm_constraint_flags['i'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
174 asm_constraint_flags['s'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
175 asm_constraint_flags['E'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
176 asm_constraint_flags['F'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
177 asm_constraint_flags['G'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
178 asm_constraint_flags['H'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
179 asm_constraint_flags['I'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
180 asm_constraint_flags['J'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
181 asm_constraint_flags['K'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
182 asm_constraint_flags['L'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
183 asm_constraint_flags['M'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
184 asm_constraint_flags['N'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
185 asm_constraint_flags['O'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
186 asm_constraint_flags['P'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
188 asm_constraint_flags['m'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
189 asm_constraint_flags['o'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
190 asm_constraint_flags['V'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
191 asm_constraint_flags['<'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
192 asm_constraint_flags['>'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
194 asm_constraint_flags['p'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
195 asm_constraint_flags['0'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
196 asm_constraint_flags['1'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
197 asm_constraint_flags['2'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
198 asm_constraint_flags['3'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
199 asm_constraint_flags['4'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
200 asm_constraint_flags['5'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
201 asm_constraint_flags['6'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
202 asm_constraint_flags['7'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
203 asm_constraint_flags['8'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
204 asm_constraint_flags['9'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
206 asm_constraint_flags['X'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER
207 | ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP
208 | ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
210 /* these should have been catched by the parsing code already */
211 asm_constraint_flags['#'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
212 asm_constraint_flags['*'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
213 asm_constraint_flags[' '] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
214 asm_constraint_flags['\t'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
215 asm_constraint_flags['\n'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
216 asm_constraint_flags['\r'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
219 asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
221 asm_constraint_flags_t flags = ASM_CONSTRAINT_FLAG_NONE;
223 asm_constraint_flags_t tflags;
225 for (c = constraint; *c != '\0'; ++c) {
228 /* 'comment' stuff */
229 while (*c != 0 && *c != ',')
233 /* 'comment' character */
242 tflags = asm_constraint_flags[(int) *c];
246 flags |= isa_if->parse_asm_constraint(&c);
253 flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
254 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
256 flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
257 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
259 flags |= ASM_CONSTRAINT_FLAG_INVALID;
261 if (!(flags & (ASM_CONSTRAINT_FLAG_MODIFIER_READ |
262 ASM_CONSTRAINT_FLAG_MODIFIER_WRITE |
263 ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE |
264 ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ)
266 flags |= ASM_CONSTRAINT_FLAG_MODIFIER_READ;
272 int be_is_valid_clobber(const char *clobber)
274 /* memory is a valid clobber. (the frontend has to detect this case too,
275 * because it has to add memory edges to the asm) */
276 if (strcmp(clobber, "memory") == 0)
278 /* cc (condition code) is always valid */
279 if (strcmp(clobber, "cc") == 0)
282 return isa_if->is_valid_clobber(clobber);
285 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
290 be_add_module_to_list(&isa_ifs, name, (void*) isa);
293 void be_opt_register(void)
295 lc_opt_entry_t *be_grp;
296 static int run_once = 0;
302 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
303 lc_opt_add_table(be_grp, be_main_options);
305 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
306 &isa_ifs, (void**) &isa_if);
311 /* Parse one argument. */
312 int be_parse_arg(const char *arg)
314 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
315 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
316 lc_opt_print_help_for_entry(be_grp, '-', stdout);
319 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
322 /* Perform schedule verification if requested. */
323 static void be_sched_verify(ir_graph *irg, int verify_opt)
325 if (verify_opt == BE_VERIFY_WARN) {
326 be_verify_schedule(irg);
327 } else if (verify_opt == BE_VERIFY_ASSERT) {
328 assert(be_verify_schedule(irg) && "Schedule verification failed.");
332 /* Initialize the Firm backend. Must be run first in init_firm()! */
333 void firm_be_init(void)
339 /* Finalize the Firm backend. */
340 void firm_be_finish(void)
345 /* Returns the backend parameter */
346 const backend_params *be_get_backend_param(void)
348 return isa_if->get_params();
352 * Initializes the main environment for the backend.
354 * @param env an empty environment
355 * @param file_handle the file handle where the output will be written to
357 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
359 memset(env, 0, sizeof(*env));
360 env->options = &be_options;
361 env->ent_trampoline_map = pmap_create();
362 env->pic_trampolines_type = new_type_class(NEW_ID("$PIC_TRAMPOLINE_TYPE"));
363 env->ent_pic_symbol_map = pmap_create();
364 env->pic_symbols_type = new_type_struct(NEW_ID("$PIC_SYMBOLS_TYPE"));
366 remove_irp_type(env->pic_trampolines_type);
367 remove_irp_type(env->pic_symbols_type);
368 set_class_final(env->pic_trampolines_type, 1);
370 memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
371 env->arch_env = arch_env_init(isa_if, file_handle, env);
378 * Called when the be_main_env_t can be destroyed.
380 static void be_done_env(be_main_env_t *env)
382 arch_env_done(env->arch_env);
385 pmap_destroy(env->ent_trampoline_map);
386 pmap_destroy(env->ent_pic_symbol_map);
387 free_type(env->pic_trampolines_type);
388 free_type(env->pic_symbols_type);
392 * A wrapper around a firm dumper. Dumps only, if
395 * @param mask a bitmask containing the reason what will be dumped
396 * @param irg the IR graph to dump
397 * @param suffix the suffix for the dumper
398 * @param dumper the dumper to be called
400 static void dump(int mask, ir_graph *irg, const char *suffix)
402 if (be_options.dump_flags & mask)
403 dump_ir_graph(irg, suffix);
407 * Prepare a backend graph for code generation and initialize its irg
409 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
411 /* don't duplicate locals in backend when dumping... */
412 ir_remove_dump_flags(ir_dump_flag_consts_local);
414 dump(DUMP_INITIAL, irg, "begin");
418 memset(birg, 0, sizeof(*birg));
420 birg->main_env = env;
421 obstack_init(&birg->obst);
423 edges_deactivate_kind(irg, EDGE_KIND_DEP);
424 edges_activate_kind(irg, EDGE_KIND_DEP);
426 /* set the current graph (this is important for several firm functions) */
427 current_ir_graph = irg;
429 /* we do this before critical edge split. As this produces less returns,
430 because sometimes (= 164.gzip) multiple returns are slower */
431 normalize_n_returns(irg);
433 /* Remove critical edges */
434 remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
436 /* Ensure, that the ir_edges are computed. */
439 set_irg_phase_state(irg, phase_backend);
440 be_info_init_irg(irg);
442 dump(DUMP_INITIAL, irg, "prepared");
447 static const char *get_timer_name(be_timer_id_t id)
450 case T_ABI: return "abi";
451 case T_CODEGEN: return "codegen";
452 case T_RA_PREPARATION: return "ra_preparation";
453 case T_SCHED: return "sched";
454 case T_CONSTR: return "constr";
455 case T_FINISH: return "finish";
456 case T_EMIT: return "emit";
457 case T_VERIFY: return "verify";
458 case T_OTHER: return "other";
459 case T_HEIGHTS: return "heights";
460 case T_LIVE: return "live";
461 case T_EXECFREQ: return "execfreq";
462 case T_SSA_CONSTR: return "ssa_constr";
463 case T_RA_PROLOG: return "ra_prolog";
464 case T_RA_EPILOG: return "ra_epilog";
465 case T_RA_CONSTR: return "ra_constr";
466 case T_RA_SPILL: return "ra_spill";
467 case T_RA_SPILL_APPLY: return "ra_spill_apply";
468 case T_RA_COLOR: return "ra_color";
469 case T_RA_IFG: return "ra_ifg";
470 case T_RA_COPYMIN: return "ra_copymin";
471 case T_RA_SSA: return "ra_ssa";
472 case T_RA_OTHER: return "ra_other";
476 ir_timer_t *be_timers[T_LAST+1];
478 void be_lower_for_target(void)
482 isa_if->lower_for_target();
483 /* set the phase to low */
484 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
485 ir_graph *irg = get_irp_irg(i);
486 set_irg_phase_state(irg, phase_low);
488 set_irp_phase_state(phase_low);
492 * The Firm backend main loop.
493 * Do architecture specific lowering for all graphs
494 * and call the architecture specific code generator.
496 * @param file_handle the file handle the output will be written to
497 * @param cup_name name of the compilation unit
499 static void be_main_loop(FILE *file_handle, const char *cup_name)
501 static const char suffix[] = ".prof";
503 int i, num_birgs, stat_active = 0;
505 char prof_filename[256];
507 ir_graph **irg_list, **backend_irg_list;
508 arch_env_t *arch_env;
510 be_timing = (be_options.timing == BE_TIME_ON);
513 for (i = 0; i < T_LAST+1; ++i) {
514 be_timers[i] = ir_timer_new();
518 be_init_env(&env, file_handle);
519 env.cup_name = cup_name;
524 arch_env = env.arch_env;
526 /* backend may provide an ordered list of irgs where code should be
528 irg_list = NEW_ARR_F(ir_graph *, 0);
529 backend_irg_list = arch_env_get_backend_irg_list(arch_env, &irg_list);
531 /* we might need 1 birg more for instrumentation constructor */
532 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
533 birgs = ALLOCAN(be_irg_t, num_birgs + 1);
537 /* First: initialize all birgs */
538 for (i = 0; i < num_birgs; ++i) {
539 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
540 initialize_birg(&birgs[i], irg, &env);
542 arch_env_handle_intrinsics(arch_env);
546 Get the filename for the profiling data.
547 Beware: '\0' is already included in sizeof(suffix)
549 sprintf(prof_filename, "%.*s%s\n", (int)(sizeof(prof_filename) - sizeof(suffix)), cup_name, suffix);
552 Next: Either instruments all irgs with profiling code
553 or try to read in profile data for current translation unit.
555 if (be_options.opt_profile) {
556 ir_graph *prof_init_irg = ir_profile_instrument(prof_filename, profile_default);
557 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
560 ir_profile_read(prof_filename);
563 #ifdef FIRM_STATISTICS
564 stat_active = stat_is_active();
565 #endif /* FIRM_STATISTICS */
568 for (i = 0; i < num_birgs; ++i) {
569 be_irg_t *birg = &birgs[i];
570 ir_graph *irg = birg->irg;
571 optimization_state_t state;
573 /* set the current graph (this is important for several firm functions) */
574 current_ir_graph = irg;
577 stat_ev_ctx_push_fobj("bemain_irg", irg);
578 be_stat_ev("bemain_insns_start", be_count_insns(irg));
579 be_stat_ev("bemain_blocks_start", be_count_blocks(irg));
582 /* stop and reset timers */
583 be_timer_push(T_OTHER);
585 /* Verify the initial graph */
586 be_timer_push(T_VERIFY);
587 if (be_options.verify_option == BE_VERIFY_WARN) {
588 irg_verify(irg, VERIFY_ENFORCE_SSA);
589 be_check_dominance(irg);
590 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
591 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
592 assert(be_check_dominance(irg) && "Dominance verification failed");
594 be_timer_pop(T_VERIFY);
596 /* get a code generator for this graph. */
597 arch_env->impl->init_graph(irg);
599 /* some transformations need to be done before abi introduce */
600 if (arch_env->impl->before_abi != NULL)
601 arch_env->impl->before_abi(irg);
603 /* implement the ABI conventions. */
604 if (!arch_env->custom_abi) {
605 be_timer_push(T_ABI);
606 be_abi_introduce(irg);
608 dump(DUMP_ABI, irg, "abi");
611 /* we have to do cfopt+remove_critical_edges as we can't have Bad-blocks
612 * or critical edges in the backend */
614 remove_critical_cf_edges(irg);
616 /* We often have dead code reachable through out-edges here. So for
617 * now we rebuild edges (as we need correct user count for code
619 edges_deactivate(irg);
622 dump(DUMP_PREPARED, irg, "before-code-selection");
624 if (be_options.verify_option == BE_VERIFY_WARN) {
625 be_check_dominance(irg);
626 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
627 assert(be_check_dominance(irg) && "Dominance verification failed");
630 /* perform codeselection */
631 be_timer_push(T_CODEGEN);
632 if (arch_env->impl->prepare_graph != NULL)
633 arch_env->impl->prepare_graph(irg);
634 be_timer_pop(T_CODEGEN);
636 if (be_options.verify_option == BE_VERIFY_WARN) {
637 be_check_dominance(irg);
638 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
639 assert(be_check_dominance(irg) && "Dominance verification failed");
642 be_timer_push(T_EXECFREQ);
644 * Create execution frequencies from profile data or estimate some
646 if (ir_profile_has_data())
647 birg->exec_freq = ir_create_execfreqs_from_profile(irg);
649 /* TODO: edges are corrupt for EDGE_KIND_BLOCK after the local
650 * optimize graph phase merges blocks in the x86 backend */
651 edges_deactivate(irg);
652 birg->exec_freq = compute_execfreq(irg, 10);
654 be_timer_pop(T_EXECFREQ);
657 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
658 /* be_live_chk_compare(irg); */
660 /* schedule the irg */
661 be_timer_push(T_SCHED);
663 be_timer_pop(T_SCHED);
665 dump(DUMP_SCHED, irg, "sched");
668 be_timer_push(T_VERIFY);
669 be_sched_verify(irg, be_options.verify_option);
670 be_timer_pop(T_VERIFY);
672 /* introduce patterns to assure constraints */
673 be_timer_push(T_CONSTR);
674 /* we switch off optimizations here, because they might cause trouble */
675 save_optimization_state(&state);
679 /* add Keeps for should_be_different constrained nodes */
680 /* beware: needs schedule due to usage of be_ssa_constr */
681 assure_constraints(irg);
682 be_timer_pop(T_CONSTR);
684 dump(DUMP_SCHED, irg, "assured");
686 /* stuff needs to be done after scheduling but before register allocation */
687 be_timer_push(T_RA_PREPARATION);
688 if (arch_env->impl->before_ra != NULL)
689 arch_env->impl->before_ra(irg);
690 be_timer_pop(T_RA_PREPARATION);
692 /* connect all stack modifying nodes together (see beabi.c) */
693 be_timer_push(T_ABI);
694 be_abi_fix_stack_nodes(irg);
697 dump(DUMP_SCHED, irg, "fix_stack");
700 be_timer_push(T_VERIFY);
701 be_sched_verify(irg, be_options.verify_option);
702 be_timer_pop(T_VERIFY);
705 stat_ev_dbl("bemain_costs_before_ra",
706 be_estimate_irg_costs(irg, birg->exec_freq));
707 be_stat_ev("bemain_insns_before_ra", be_count_insns(irg));
708 be_stat_ev("bemain_blocks_before_ra", be_count_blocks(irg));
711 /* Do register allocation */
712 be_allocate_registers(irg);
714 #ifdef FIRM_STATISTICS
715 stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
718 dump(DUMP_RA, irg, "ra");
720 /* let the code generator prepare the graph for emitter */
721 be_timer_push(T_FINISH);
722 if (arch_env->impl->after_ra != NULL)
723 arch_env->impl->after_ra(irg);
724 be_timer_pop(T_FINISH);
726 /* fix stack offsets */
727 be_timer_push(T_ABI);
728 be_abi_fix_stack_nodes(irg);
729 be_remove_dead_nodes_from_schedule(irg);
730 be_abi_fix_stack_bias(irg);
733 dump(DUMP_SCHED, irg, "fix_stack_after_ra");
735 be_timer_push(T_FINISH);
736 if (arch_env->impl->finish != NULL)
737 arch_env->impl->finish(irg);
738 be_timer_pop(T_FINISH);
740 dump(DUMP_FINAL, irg, "finish");
743 be_stat_ev("bemain_insns_finish", be_count_insns(irg));
744 be_stat_ev("bemain_blocks_finish", be_count_blocks(irg));
747 /* check schedule and register allocation */
748 be_timer_push(T_VERIFY);
749 if (be_options.verify_option == BE_VERIFY_WARN) {
750 irg_verify(irg, VERIFY_ENFORCE_SSA);
751 be_check_dominance(irg);
752 be_verify_schedule(irg);
753 be_verify_register_allocation(irg);
754 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
755 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
756 assert(be_check_dominance(irg) && "Dominance verification failed");
757 assert(be_verify_schedule(irg) && "Schedule verification failed");
758 assert(be_verify_register_allocation(irg)
759 && "register allocation verification failed");
762 be_timer_pop(T_VERIFY);
764 /* emit assembler code */
765 be_timer_push(T_EMIT);
766 if (arch_env->impl->emit != NULL)
767 arch_env->impl->emit(irg);
768 be_timer_pop(T_EMIT);
770 dump(DUMP_FINAL, irg, "end");
772 if (!arch_env->custom_abi) {
773 be_timer_push(T_ABI);
778 restore_optimization_state(&state);
780 be_timer_pop(T_OTHER);
784 if (stat_ev_enabled) {
785 for (t = T_FIRST; t < T_LAST+1; ++t) {
787 snprintf(buf, sizeof(buf), "bemain_time_%s",
789 stat_ev_dbl(buf, ir_timer_elapsed_usec(be_timers[i]));
792 printf("==>> IRG %s <<==\n",
793 get_entity_name(get_irg_entity(irg)));
794 for (t = T_FIRST; t < T_LAST+1; ++t) {
795 double val = ir_timer_elapsed_usec(be_timers[t]) / 1000.0;
796 printf("%-20s: %8.3lf msec\n", get_timer_name(t), val);
799 for (t = T_FIRST; t < T_LAST+1; ++t) {
800 ir_timer_stop(be_timers[t]);
801 ir_timer_reset(be_timers[t]);
806 stat_ev_ctx_pop("bemain_irg");
814 /* Main interface to the frontend. */
815 void be_main(FILE *file_handle, const char *cup_name)
817 ir_timer_t *t = NULL;
819 /* The user specified another config file to read. do that now. */
820 if (config_file[0] != '\0') {
821 FILE *f = fopen(config_file, "rt");
824 lc_opt_from_file(config_file, f, NULL);
827 fprintf(stderr, "Warning: Cannot open config file '%s'\n", config_file);
831 if (be_options.timing == BE_TIME_ON) {
834 if (ir_timer_enter_high_priority()) {
835 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
838 ir_timer_reset_and_start(t);
841 #ifdef FIRM_STATISTICS
842 if (be_options.statev) {
843 const char *dot = strrchr(cup_name, '.');
844 const char *pos = dot ? dot : cup_name + strlen(cup_name);
845 char *buf = ALLOCAN(char, pos - cup_name + 1);
846 strncpy(buf, cup_name, pos - cup_name);
847 buf[pos - cup_name] = '\0';
849 be_options.statev = 1;
850 stat_ev_begin(buf, be_options.filtev);
851 stat_ev_ctx_push_str("bemain_compilation_unit", cup_name);
855 be_main_loop(file_handle, cup_name);
857 if (be_options.timing == BE_TIME_ON) {
859 ir_timer_leave_high_priority();
861 stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
863 double val = ir_timer_elapsed_usec(t) / 1000.0;
864 printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
868 #ifdef FIRM_STATISTICS
869 if (be_options.statev) {
870 stat_ev_ctx_pop("bemain_compilation_unit");
876 static int do_lower_for_target(ir_prog *irp, void *context)
878 be_lower_for_target();
884 ir_prog_pass_t *lower_for_target_pass(const char *name)
886 ir_prog_pass_t *pass = XMALLOCZ(ir_prog_pass_t);
887 return def_prog_pass_constructor(pass,
888 name ? name : "lower_for_target",
889 do_lower_for_target);