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"
71 #include "beschedmris.h"
74 #include "be_dbgout.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 0, /* no opt profile */
85 0, /* try to omit frame pointer */
86 0, /* try to omit leaf frame pointer */
87 0, /* create PIC code */
88 0, /* create gprof compatible profiling code */
89 BE_VERIFY_WARN, /* verification level: warn */
90 "linux", /* target OS name */
91 "i44pc52.info.uni-karlsruhe.de", /* ilp server */
92 "cplex", /* ilp solver */
93 0, /* enable statistic event dumping */
94 "", /* print stat events */
98 static char config_file[256] = { 0 };
100 /* back end instruction set architecture to use */
101 static const arch_isa_if_t *isa_if = NULL;
103 /* possible dumping options */
104 static const lc_opt_enum_mask_items_t dump_items[] = {
105 { "none", DUMP_NONE },
106 { "initial", DUMP_INITIAL },
108 { "sched", DUMP_SCHED },
109 { "prepared", DUMP_PREPARED },
110 { "regalloc", DUMP_RA },
111 { "final", DUMP_FINAL },
113 { "all", 2 * DUMP_BE - 1 },
117 /* verify options. */
118 static const lc_opt_enum_int_items_t verify_items[] = {
119 { "off", BE_VERIFY_OFF },
120 { "warn", BE_VERIFY_WARN },
121 { "assert", BE_VERIFY_ASSERT },
125 static lc_opt_enum_mask_var_t dump_var = {
126 &be_options.dump_flags, dump_items
129 static lc_opt_enum_int_var_t verify_var = {
130 &be_options.verify_option, verify_items
133 static const lc_opt_table_entry_t be_main_options[] = {
134 LC_OPT_ENT_STR ("config", "read another config file containing backend options", config_file, sizeof(config_file)),
135 LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
136 LC_OPT_ENT_BOOL ("omitfp", "omit frame pointer", &be_options.omit_fp),
137 LC_OPT_ENT_BOOL ("omitleaffp", "omit frame pointer in leaf routines", &be_options.omit_leaf_fp),
138 LC_OPT_ENT_BOOL ("pic", "create PIC code", &be_options.pic),
139 LC_OPT_ENT_BOOL ("gprof", "create gprof profiling code", &be_options.gprof),
140 LC_OPT_ENT_ENUM_PTR ("verify", "verify the backend irg", &verify_var),
141 LC_OPT_ENT_BOOL ("time", "get backend timing statistics", &be_options.timing),
142 LC_OPT_ENT_BOOL ("profile", "instrument the code for execution count profiling", &be_options.opt_profile),
143 LC_OPT_ENT_STR ("os", "specify target operating system", &be_options.target_os, sizeof(be_options.target_os)),
144 #ifdef FIRM_STATISTICS
145 LC_OPT_ENT_BOOL ("statev", "dump statistic events", &be_options.statev),
146 LC_OPT_ENT_STR ("filtev", "filter for stat events (regex if support is active", &be_options.filtev, sizeof(be_options.filtev)),
150 LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
151 LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
152 #endif /* WITH_ILP */
156 static be_module_list_entry_t *isa_ifs = NULL;
159 unsigned short asm_constraint_flags[256];
161 void be_init_default_asm_constraint_flags(void)
163 asm_constraint_flags['?'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
164 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
165 asm_constraint_flags['&'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
166 | ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER;
167 asm_constraint_flags['%'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
168 | ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE;
169 asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
171 asm_constraint_flags['='] = ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
172 | ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
173 asm_constraint_flags['+'] = ASM_CONSTRAINT_FLAG_MODIFIER_READ
174 | ASM_CONSTRAINT_FLAG_MODIFIER_WRITE;
176 asm_constraint_flags['i'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
177 asm_constraint_flags['s'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
178 asm_constraint_flags['E'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
179 asm_constraint_flags['F'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
180 asm_constraint_flags['G'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
181 asm_constraint_flags['H'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
182 asm_constraint_flags['I'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
183 asm_constraint_flags['J'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
184 asm_constraint_flags['K'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
185 asm_constraint_flags['L'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
186 asm_constraint_flags['M'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
187 asm_constraint_flags['N'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
188 asm_constraint_flags['O'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
189 asm_constraint_flags['P'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
191 asm_constraint_flags['m'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
192 asm_constraint_flags['o'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
193 asm_constraint_flags['V'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
194 asm_constraint_flags['<'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
195 asm_constraint_flags['>'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
197 asm_constraint_flags['p'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
198 asm_constraint_flags['0'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
199 asm_constraint_flags['1'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
200 asm_constraint_flags['2'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
201 asm_constraint_flags['3'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
202 asm_constraint_flags['4'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
203 asm_constraint_flags['5'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
204 asm_constraint_flags['6'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
205 asm_constraint_flags['7'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
206 asm_constraint_flags['8'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
207 asm_constraint_flags['9'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
209 asm_constraint_flags['X'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER
210 | ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP
211 | ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
213 /* these should have been catched by the parsing code already */
214 asm_constraint_flags['#'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
215 asm_constraint_flags['*'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
216 asm_constraint_flags[' '] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
217 asm_constraint_flags['\t'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
218 asm_constraint_flags['\n'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
219 asm_constraint_flags['\r'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
222 asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
224 asm_constraint_flags_t flags = 0;
226 asm_constraint_flags_t tflags;
228 for (c = constraint; *c != '\0'; ++c) {
231 /* 'comment' stuff */
232 while (*c != 0 && *c != ',')
236 /* 'comment' character */
245 tflags = asm_constraint_flags[(int) *c];
249 flags |= isa_if->parse_asm_constraint(&c);
256 flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
257 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
259 flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
260 flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
262 flags |= ASM_CONSTRAINT_FLAG_INVALID;
264 if (!(flags & (ASM_CONSTRAINT_FLAG_MODIFIER_READ |
265 ASM_CONSTRAINT_FLAG_MODIFIER_WRITE |
266 ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE |
267 ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ)
269 flags |= ASM_CONSTRAINT_FLAG_MODIFIER_READ;
275 int be_is_valid_clobber(const char *clobber)
277 /* memory is a valid clobber. (the frontend has to detect this case too,
278 * because it has to add memory edges to the asm) */
279 if (strcmp(clobber, "memory") == 0)
281 /* cc (condition code) is always valid */
282 if (strcmp(clobber, "cc") == 0)
285 return isa_if->is_valid_clobber(clobber);
288 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
293 be_add_module_to_list(&isa_ifs, name, (void*) isa);
296 void be_opt_register(void)
298 lc_opt_entry_t *be_grp;
299 static int run_once = 0;
305 be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
306 lc_opt_add_table(be_grp, be_main_options);
308 be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
309 &isa_ifs, (void**) &isa_if);
314 /* Parse one argument. */
315 int be_parse_arg(const char *arg)
317 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
318 if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
319 lc_opt_print_help_for_entry(be_grp, '-', stdout);
322 return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
325 /* Perform schedule verification if requested. */
326 static void be_sched_verify(ir_graph *irg, int verify_opt)
328 if (verify_opt == BE_VERIFY_WARN) {
329 be_verify_schedule(irg);
330 } else if (verify_opt == BE_VERIFY_ASSERT) {
331 assert(be_verify_schedule(irg) && "Schedule verification failed.");
335 /* Initialize the Firm backend. Must be run first in init_firm()! */
336 void firm_be_init(void)
342 /* Finalize the Firm backend. */
343 void firm_be_finish(void)
348 /* Returns the backend parameter */
349 const backend_params *be_get_backend_param(void)
351 return isa_if->get_params();
355 * Initializes the main environment for the backend.
357 * @param env an empty environment
358 * @param file_handle the file handle where the output will be written to
360 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
362 memset(env, 0, sizeof(*env));
363 env->options = &be_options;
364 env->ent_trampoline_map = pmap_create();
365 env->pic_trampolines_type = new_type_class(NEW_ID("$PIC_TRAMPOLINE_TYPE"));
366 env->ent_pic_symbol_map = pmap_create();
367 env->pic_symbols_type = new_type_struct(NEW_ID("$PIC_SYMBOLS_TYPE"));
369 remove_irp_type(env->pic_trampolines_type);
370 remove_irp_type(env->pic_symbols_type);
371 set_class_final(env->pic_trampolines_type, 1);
373 memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
374 env->arch_env = arch_env_init(isa_if, file_handle, env);
381 * Called when the be_main_env_t can be destroyed.
383 static void be_done_env(be_main_env_t *env)
385 arch_env_done(env->arch_env);
388 pmap_destroy(env->ent_trampoline_map);
389 pmap_destroy(env->ent_pic_symbol_map);
390 free_type(env->pic_trampolines_type);
391 free_type(env->pic_symbols_type);
395 * A wrapper around a firm dumper. Dumps only, if
398 * @param mask a bitmask containing the reason what will be dumped
399 * @param irg the IR graph to dump
400 * @param suffix the suffix for the dumper
401 * @param dumper the dumper to be called
403 static void dump(int mask, ir_graph *irg, const char *suffix)
405 if (be_options.dump_flags & mask)
406 dump_ir_graph(irg, suffix);
410 * Prepare a backend graph for code generation and initialize its irg
412 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
414 /* don't duplicate locals in backend when dumping... */
415 ir_remove_dump_flags(ir_dump_flag_consts_local);
417 dump(DUMP_INITIAL, irg, "begin");
421 memset(birg, 0, sizeof(*birg));
423 birg->main_env = env;
424 obstack_init(&birg->obst);
426 edges_deactivate_kind(irg, EDGE_KIND_DEP);
427 edges_activate_kind(irg, EDGE_KIND_DEP);
429 /* set the current graph (this is important for several firm functions) */
430 current_ir_graph = irg;
432 /* we do this before critical edge split. As this produces less returns,
433 because sometimes (= 164.gzip) multiple returns are slower */
434 normalize_n_returns(irg);
436 /* Remove critical edges */
437 remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
439 /* Ensure, that the ir_edges are computed. */
442 set_irg_phase_state(irg, phase_backend);
443 be_info_init_irg(irg);
445 dump(DUMP_INITIAL, irg, "prepared");
450 static const char *get_timer_name(be_timer_id_t id)
453 case T_ABI: return "abi";
454 case T_CODEGEN: return "codegen";
455 case T_RA_PREPARATION: return "ra_preparation";
456 case T_SCHED: return "sched";
457 case T_CONSTR: return "constr";
458 case T_FINISH: return "finish";
459 case T_EMIT: return "emit";
460 case T_VERIFY: return "verify";
461 case T_OTHER: return "other";
462 case T_HEIGHTS: return "heights";
463 case T_LIVE: return "live";
464 case T_EXECFREQ: return "execfreq";
465 case T_SSA_CONSTR: return "ssa_constr";
466 case T_RA_PROLOG: return "ra_prolog";
467 case T_RA_EPILOG: return "ra_epilog";
468 case T_RA_CONSTR: return "ra_constr";
469 case T_RA_SPILL: return "ra_spill";
470 case T_RA_SPILL_APPLY: return "ra_spill_apply";
471 case T_RA_COLOR: return "ra_color";
472 case T_RA_IFG: return "ra_ifg";
473 case T_RA_COPYMIN: return "ra_copymin";
474 case T_RA_SSA: return "ra_ssa";
475 case T_RA_OTHER: return "ra_other";
479 ir_timer_t *be_timers[T_LAST+1];
482 * The Firm backend main loop.
483 * Do architecture specific lowering for all graphs
484 * and call the architecture specific code generator.
486 * @param file_handle the file handle the output will be written to
487 * @param cup_name name of the compilation unit
489 static void be_main_loop(FILE *file_handle, const char *cup_name)
491 static const char suffix[] = ".prof";
493 int i, num_birgs, stat_active = 0;
495 char prof_filename[256];
497 ir_graph **irg_list, **backend_irg_list;
498 arch_env_t *arch_env;
500 be_timing = (be_options.timing == BE_TIME_ON);
503 for (i = 0; i < T_LAST+1; ++i) {
504 be_timers[i] = ir_timer_new();
508 be_init_env(&env, file_handle);
509 env.cup_name = cup_name;
514 arch_env = env.arch_env;
516 /* backend may provide an ordered list of irgs where code should be
518 irg_list = NEW_ARR_F(ir_graph *, 0);
519 backend_irg_list = arch_env_get_backend_irg_list(arch_env, &irg_list);
521 /* we might need 1 birg more for instrumentation constructor */
522 num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
523 birgs = ALLOCAN(be_irg_t, num_birgs + 1);
527 /* First: initialize all birgs */
528 for (i = 0; i < num_birgs; ++i) {
529 ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
530 initialize_birg(&birgs[i], irg, &env);
532 arch_env_handle_intrinsics(arch_env);
536 Get the filename for the profiling data.
537 Beware: '\0' is already included in sizeof(suffix)
539 memset(prof_filename, 0, sizeof(prof_filename));
540 strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
541 strcat(prof_filename, suffix);
544 Next: Either instruments all irgs with profiling code
545 or try to read in profile data for current translation unit.
547 if (be_options.opt_profile) {
548 ir_graph *prof_init_irg = ir_profile_instrument(prof_filename, profile_default);
549 initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
552 ir_profile_read(prof_filename);
555 #ifdef FIRM_STATISTICS
556 stat_active = stat_is_active();
557 #endif /* FIRM_STATISTICS */
560 for (i = 0; i < num_birgs; ++i) {
561 be_irg_t *birg = &birgs[i];
562 ir_graph *irg = birg->irg;
563 optimization_state_t state;
565 /* set the current graph (this is important for several firm functions) */
566 current_ir_graph = irg;
569 stat_ev_ctx_push_fobj("bemain_irg", irg);
570 be_stat_ev("bemain_insns_start", be_count_insns(irg));
571 be_stat_ev("bemain_blocks_start", be_count_blocks(irg));
574 /* stop and reset timers */
575 be_timer_push(T_OTHER);
577 /* Verify the initial graph */
578 be_timer_push(T_VERIFY);
579 if (be_options.verify_option == BE_VERIFY_WARN) {
580 irg_verify(irg, VERIFY_ENFORCE_SSA);
581 be_check_dominance(irg);
582 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
583 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
584 assert(be_check_dominance(irg) && "Dominance verification failed");
586 be_timer_pop(T_VERIFY);
588 /* get a code generator for this graph. */
589 arch_env->impl->init_graph(irg);
591 /* some transformations need to be done before abi introduce */
592 if (arch_env->impl->before_abi != NULL)
593 arch_env->impl->before_abi(irg);
595 /* implement the ABI conventions. */
596 be_timer_push(T_ABI);
597 be_abi_introduce(irg);
600 if (!arch_env->custom_abi) {
601 dump(DUMP_ABI, irg, "abi");
604 /* we have to do cfopt+remove_critical_edges as we can't have Bad-blocks
605 * or critical edges in the backend */
607 remove_critical_cf_edges(irg);
609 /* We often have dead code reachable through out-edges here. So for
610 * now we rebuild edges (as we need correct user count for code
612 edges_deactivate(irg);
615 dump(DUMP_PREPARED, irg, "before-code-selection");
617 if (be_options.verify_option == BE_VERIFY_WARN) {
618 be_check_dominance(irg);
619 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
620 assert(be_check_dominance(irg) && "Dominance verification failed");
623 /* perform codeselection */
624 be_timer_push(T_CODEGEN);
625 if (arch_env->impl->prepare_graph != NULL)
626 arch_env->impl->prepare_graph(irg);
627 be_timer_pop(T_CODEGEN);
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 be_timer_push(T_EXECFREQ);
637 * Create execution frequencies from profile data or estimate some
639 if (ir_profile_has_data())
640 birg->exec_freq = ir_create_execfreqs_from_profile(irg);
642 /* TODO: edges are corrupt for EDGE_KIND_BLOCK after the local
643 * optimize graph phase merges blocks in the x86 backend */
644 edges_deactivate(irg);
645 birg->exec_freq = compute_execfreq(irg, 10);
647 be_timer_pop(T_EXECFREQ);
650 /* disabled for now, fails for EmptyFor.c and XXEndless.c */
651 /* be_live_chk_compare(irg); */
653 /* schedule the irg */
654 be_timer_push(T_SCHED);
656 be_timer_pop(T_SCHED);
658 dump(DUMP_SCHED, irg, "sched");
661 be_timer_push(T_VERIFY);
662 be_sched_verify(irg, be_options.verify_option);
663 be_timer_pop(T_VERIFY);
665 /* introduce patterns to assure constraints */
666 be_timer_push(T_CONSTR);
667 /* we switch off optimizations here, because they might cause trouble */
668 save_optimization_state(&state);
670 set_opt_normalize(0);
673 /* add Keeps for should_be_different constrained nodes */
674 /* beware: needs schedule due to usage of be_ssa_constr */
675 assure_constraints(irg);
676 be_timer_pop(T_CONSTR);
678 dump(DUMP_SCHED, irg, "assured");
680 /* stuff needs to be done after scheduling but before register allocation */
681 be_timer_push(T_RA_PREPARATION);
682 if (arch_env->impl->before_ra != NULL)
683 arch_env->impl->before_ra(irg);
684 be_timer_pop(T_RA_PREPARATION);
686 /* connect all stack modifying nodes together (see beabi.c) */
687 be_timer_push(T_ABI);
688 be_abi_fix_stack_nodes(irg);
691 dump(DUMP_SCHED, irg, "fix_stack");
694 be_timer_push(T_VERIFY);
695 be_sched_verify(irg, be_options.verify_option);
696 be_timer_pop(T_VERIFY);
699 stat_ev_dbl("bemain_costs_before_ra",
700 be_estimate_irg_costs(irg, birg->exec_freq));
701 be_stat_ev("bemain_insns_before_ra", be_count_insns(irg));
702 be_stat_ev("bemain_blocks_before_ra", be_count_blocks(irg));
705 /* Do register allocation */
706 be_allocate_registers(irg);
708 #ifdef FIRM_STATISTICS
709 stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
712 dump(DUMP_RA, irg, "ra");
714 /* let the code generator prepare the graph for emitter */
715 be_timer_push(T_FINISH);
716 if (arch_env->impl->after_ra != NULL)
717 arch_env->impl->after_ra(irg);
718 be_timer_pop(T_FINISH);
720 /* fix stack offsets */
721 be_timer_push(T_ABI);
722 be_abi_fix_stack_nodes(irg);
723 be_remove_dead_nodes_from_schedule(irg);
724 be_abi_fix_stack_bias(irg);
727 dump(DUMP_SCHED, irg, "fix_stack_after_ra");
729 be_timer_push(T_FINISH);
730 if (arch_env->impl->finish != NULL)
731 arch_env->impl->finish(irg);
732 be_timer_pop(T_FINISH);
734 dump(DUMP_FINAL, irg, "finish");
737 be_stat_ev("bemain_insns_finish", be_count_insns(irg));
738 be_stat_ev("bemain_blocks_finish", be_count_blocks(irg));
741 /* check schedule and register allocation */
742 be_timer_push(T_VERIFY);
743 if (be_options.verify_option == BE_VERIFY_WARN) {
744 irg_verify(irg, VERIFY_ENFORCE_SSA);
745 be_check_dominance(irg);
746 be_verify_schedule(irg);
747 be_verify_register_allocation(irg);
748 } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
749 assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
750 assert(be_check_dominance(irg) && "Dominance verification failed");
751 assert(be_verify_schedule(irg) && "Schedule verification failed");
752 assert(be_verify_register_allocation(irg)
753 && "register allocation verification failed");
756 be_timer_pop(T_VERIFY);
758 /* emit assembler code */
759 be_timer_push(T_EMIT);
760 if (arch_env->impl->emit != NULL)
761 arch_env->impl->emit(irg);
762 be_timer_pop(T_EMIT);
764 dump(DUMP_FINAL, irg, "end");
766 be_timer_push(T_ABI);
770 restore_optimization_state(&state);
772 be_timer_pop(T_OTHER);
776 if (stat_ev_enabled) {
777 for (t = 0; t < T_LAST+1; ++t) {
779 snprintf(buf, sizeof(buf), "bemain_time_%s",
781 stat_ev_dbl(buf, ir_timer_elapsed_usec(be_timers[i]));
784 printf("==>> IRG %s <<==\n",
785 get_entity_name(get_irg_entity(irg)));
786 for (t = 0; t < T_LAST+1; ++t) {
787 double val = ir_timer_elapsed_usec(be_timers[t]) / 1000.0;
788 printf("%-20s: %8.3lf msec\n", get_timer_name(t), val);
791 for (t = 0; t < T_LAST+1; ++t) {
792 ir_timer_stop(be_timers[t]);
793 ir_timer_reset(be_timers[t]);
798 stat_ev_ctx_pop("bemain_irg");
806 /* Main interface to the frontend. */
807 void be_main(FILE *file_handle, const char *cup_name)
809 ir_timer_t *t = NULL;
811 /* The user specified another config file to read. do that now. */
812 if (config_file[0] != '\0') {
813 FILE *f = fopen(config_file, "rt");
816 lc_opt_from_file(config_file, f, NULL);
819 fprintf(stderr, "Warning: Cannot open config file '%s'\n", config_file);
823 if (be_options.timing == BE_TIME_ON) {
826 if (ir_timer_enter_high_priority()) {
827 fprintf(stderr, "Warning: Could not enter high priority mode.\n");
830 ir_timer_reset_and_start(t);
833 #ifdef FIRM_STATISTICS
834 if (be_options.statev) {
835 const char *dot = strrchr(cup_name, '.');
836 const char *pos = dot ? dot : cup_name + strlen(cup_name);
837 char *buf = ALLOCAN(char, pos - cup_name + 1);
838 strncpy(buf, cup_name, pos - cup_name);
839 buf[pos - cup_name] = '\0';
841 be_options.statev = 1;
842 stat_ev_begin(buf, be_options.filtev);
843 stat_ev_ctx_push_str("bemain_compilation_unit", cup_name);
847 be_main_loop(file_handle, cup_name);
849 if (be_options.timing == BE_TIME_ON) {
851 ir_timer_leave_high_priority();
853 stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
855 double val = ir_timer_elapsed_usec(t) / 1000.0;
856 printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
860 #ifdef FIRM_STATISTICS
861 if (be_options.statev) {
862 stat_ev_ctx_pop("bemain_compilation_unit");
868 static int do_lower_for_target(ir_prog *irp, void *context)
870 const backend_params *be_params = be_get_backend_param();
871 be_params->lower_for_target();
877 ir_prog_pass_t *lower_for_target_pass(const char *name)
879 ir_prog_pass_t *pass = XMALLOCZ(ir_prog_pass_t);
880 return def_prog_pass_constructor(pass,
881 name ? name : "lower_for_target",
882 do_lower_for_target);
885 unsigned be_put_ignore_regs(const ir_graph *irg,
886 const arch_register_class_t *cls, bitset_t *bs)
889 bs = bitset_alloca(cls->n_regs);
891 bitset_clear_all(bs);
893 assert(bitset_size(bs) == cls->n_regs);
894 arch_put_non_ignore_regs(cls, bs);
896 be_abi_put_ignore_regs(be_get_irg_abi(irg), cls, bs);
898 return bitset_popcount(bs);