3 * @file firm_opt.c -- Firm-generating back end optimizations.
5 * (C) 2005-2007 Michael Beck beck@ipd.info.uni-karlsruhe.de
14 #include <libfirm/firm.h>
15 #include <libfirm/be.h>
19 #include "firm_codegen.h"
20 #include "firm_cmdline.h"
21 #include "firm_timing.h"
24 #define snprintf _snprintf
27 #if defined(_DEBUG) || defined(FIRM_DEBUG)
28 #define DBG(x) dbg_printf x
31 #endif /* _DEBUG || FIRM_DEBUG */
34 /** dump all the graphs depending on cond */
35 #define DUMP_ALL(cond, suffix) \
38 timer_push(TV_VCG_DUMP); \
39 if (firm_dump.no_blocks) \
40 dump_all_ir_graphs(dump_ir_graph, suffix); \
41 else if (firm_dump.extbb) \
42 dump_all_ir_graphs(dump_ir_extblock_graph, suffix);\
44 dump_all_ir_graphs(dump_ir_block_graph, suffix); \
49 /** dump all control flow graphs depending on cond */
50 #define DUMP_ALL_CFG(cond, suffix) \
53 timer_push(TV_VCG_DUMP); \
54 dump_all_ir_graphs(dump_cfg, suffix); \
59 /** check all graphs depending on cond */
60 #define CHECK_ALL(cond) \
64 timer_push(TV_VERIFY); \
65 for (ii = get_irp_n_irgs() - 1; ii >= 0; --ii) \
66 irg_verify(get_irp_irg(ii), VRFY_ENFORCE_SSA); \
73 /** dump graphs irg depending on cond */
74 #define DUMP_ONE(cond, irg, suffix) \
77 timer_push(TV_VCG_DUMP); \
78 if (firm_dump.no_blocks) \
79 dump_ir_graph(irg, suffix); \
80 else if (firm_dump.extbb) \
81 dump_ir_extblock_graph(irg, suffix); \
83 dump_ir_block_graph(irg, suffix); \
88 /** dump control flow graph irg depending on cond */
89 #define DUMP_ONE_CFG(cond, irg, suffix) \
92 timer_push(TV_VCG_DUMP); \
93 dump_cfg(irg, suffix); \
98 /** check a graph irg depending on cond */
99 #define CHECK_ONE(cond, irg) \
102 timer_push(TV_VERIFY); \
103 irg_verify(irg, VRFY_ENFORCE_SSA); \
109 /* set by the backend parameters */
110 static const ir_settings_arch_dep_t *ad_param = NULL;
111 static create_intrinsic_fkt *arch_create_intrinsic = NULL;
112 static void *create_intrinsic_ctx = NULL;
113 static const ir_settings_if_conv_t *if_conv_info = NULL;
115 ir_mode *firm_imm_fp_mode = NULL;
117 /* entities of runtime functions */
118 ir_entity_ptr rts_entities[rts_max];
121 * factory for setting architecture dependent parameters
123 static const ir_settings_arch_dep_t *arch_factory(void)
125 static const ir_settings_arch_dep_t param = {
126 1, /* also use subs */
127 4, /* maximum shifts */
128 31, /* maximum shift amount */
129 NULL, /* use default evaluator */
133 32 /* Mulh allowed up to 32 bit */
136 return ad_param ? ad_param : ¶m;
140 * Map runtime functions.
142 static void rts_map(void) {
143 static const struct {
144 ir_entity_ptr *ent; /**< address of the rts entity */
145 i_mapper_func func; /**< mapper function. */
148 { &rts_entities[rts_abs], i_mapper_abs },
149 { &rts_entities[rts_labs], i_mapper_abs },
150 { &rts_entities[rts_llabs], i_mapper_abs },
151 { &rts_entities[rts_imaxabs], i_mapper_abs },
153 /* double -> double */
154 { &rts_entities[rts_fabs], i_mapper_abs },
155 { &rts_entities[rts_sqrt], i_mapper_sqrt },
156 { &rts_entities[rts_cbrt], i_mapper_cbrt },
157 { &rts_entities[rts_pow], i_mapper_pow },
158 { &rts_entities[rts_exp], i_mapper_exp },
159 { &rts_entities[rts_exp2], i_mapper_exp },
160 { &rts_entities[rts_exp10], i_mapper_exp },
161 { &rts_entities[rts_log], i_mapper_log },
162 { &rts_entities[rts_log2], i_mapper_log2 },
163 { &rts_entities[rts_log10], i_mapper_log10 },
164 { &rts_entities[rts_sin], i_mapper_sin },
165 { &rts_entities[rts_cos], i_mapper_cos },
166 { &rts_entities[rts_tan], i_mapper_tan },
167 { &rts_entities[rts_asin], i_mapper_asin },
168 { &rts_entities[rts_acos], i_mapper_acos },
169 { &rts_entities[rts_atan], i_mapper_atan },
170 { &rts_entities[rts_sinh], i_mapper_sinh },
171 { &rts_entities[rts_cosh], i_mapper_cosh },
172 { &rts_entities[rts_tanh], i_mapper_tanh },
175 { &rts_entities[rts_fabsf], i_mapper_abs },
176 { &rts_entities[rts_sqrtf], i_mapper_sqrt },
177 { &rts_entities[rts_cbrtf], i_mapper_cbrt },
178 { &rts_entities[rts_powf], i_mapper_pow },
179 { &rts_entities[rts_expf], i_mapper_exp },
180 { &rts_entities[rts_exp2f], i_mapper_exp },
181 { &rts_entities[rts_exp10f], i_mapper_exp },
182 { &rts_entities[rts_logf], i_mapper_log },
183 { &rts_entities[rts_log2f], i_mapper_log2 },
184 { &rts_entities[rts_log10f], i_mapper_log10 },
185 { &rts_entities[rts_sinf], i_mapper_sin },
186 { &rts_entities[rts_cosf], i_mapper_cos },
187 { &rts_entities[rts_tanf], i_mapper_tan },
188 { &rts_entities[rts_asinf], i_mapper_asin },
189 { &rts_entities[rts_acosf], i_mapper_acos },
190 { &rts_entities[rts_atanf], i_mapper_atan },
191 { &rts_entities[rts_sinhf], i_mapper_sinh },
192 { &rts_entities[rts_coshf], i_mapper_cosh },
193 { &rts_entities[rts_tanhf], i_mapper_tanh },
195 /* long double -> long double */
196 { &rts_entities[rts_fabsl], i_mapper_abs },
197 { &rts_entities[rts_sqrtl], i_mapper_sqrt },
198 { &rts_entities[rts_cbrtl], i_mapper_cbrt },
199 { &rts_entities[rts_powl], i_mapper_pow },
200 { &rts_entities[rts_expl], i_mapper_exp },
201 { &rts_entities[rts_exp2l], i_mapper_exp },
202 { &rts_entities[rts_exp10l], i_mapper_exp },
203 { &rts_entities[rts_logl], i_mapper_log },
204 { &rts_entities[rts_log2l], i_mapper_log2 },
205 { &rts_entities[rts_log10l], i_mapper_log10 },
206 { &rts_entities[rts_sinl], i_mapper_sin },
207 { &rts_entities[rts_cosl], i_mapper_cos },
208 { &rts_entities[rts_tanl], i_mapper_tan },
209 { &rts_entities[rts_asinl], i_mapper_asin },
210 { &rts_entities[rts_acosl], i_mapper_acos },
211 { &rts_entities[rts_atanl], i_mapper_atan },
212 { &rts_entities[rts_sinhl], i_mapper_sinh },
213 { &rts_entities[rts_coshl], i_mapper_cosh },
214 { &rts_entities[rts_tanhl], i_mapper_tanh },
217 { &rts_entities[rts_memcpy], i_mapper_memcpy },
218 { &rts_entities[rts_memset], i_mapper_memset },
219 { &rts_entities[rts_strcmp], i_mapper_strcmp },
220 { &rts_entities[rts_strncmp], i_mapper_strncmp },
221 { &rts_entities[rts_strlen], i_mapper_strlen }
223 i_record rec[sizeof(mapper)/sizeof(mapper[0])];
226 for (i = n_map = 0; i < sizeof(mapper)/sizeof(mapper[0]); ++i)
227 if (*mapper[i].ent != NULL) {
228 rec[n_map].i_call.kind = INTRINSIC_CALL;
229 rec[n_map].i_call.i_ent = *mapper[i].ent;
230 rec[n_map].i_call.i_mapper = mapper[i].func;
231 rec[n_map].i_call.ctx = NULL;
232 rec[n_map].i_call.link = NULL;
236 lower_intrinsics(rec, n_map, /* part_block_used=*/0);
239 static int *irg_dump_no;
241 static void dump_graph_count(ir_graph *const irg, const char *const suffix)
244 snprintf(name, sizeof(name), "-%02d_%s", irg_dump_no[get_irg_idx(irg)]++, suffix);
245 DUMP_ONE(1, irg, name);
249 static void dump_graph_cfg_count(ir_graph *const irg, const char *const suffix)
252 snprintf(name, sizeof(name), "-%02d_%s", irg_dump_no[get_irg_idx(irg)]++, suffix);
253 DUMP_ONE_CFG(1, irg, name);
257 static void dump_all_count(const char *const suffix)
259 const int n_irgs = get_irp_n_irgs();
262 for (i = 0; i < n_irgs; ++i)
263 dump_graph_count(get_irp_irg(i), suffix);
266 #define DUMP_ONE_C(cond, irg, suffix) \
269 dump_graph_count((irg), (suffix)); \
273 #define DUMP_ONE_CFG_C(cond, irg, suffix) \
276 dump_graph_cfg_count((irg), (suffix)); \
280 #define DUMP_ALL_C(cond, suffix) \
283 dump_all_count((suffix)); \
287 static void remove_unused_functions(void)
289 ir_entity **keep_methods;
292 /* Analysis that finds the free methods,
293 i.e. methods that are dereferenced.
294 Optimizes polymorphic calls :-). */
295 cgana(&arr_len, &keep_methods);
297 /* Remove methods that are never called. */
298 gc_irgs(arr_len, keep_methods);
302 static int firm_const_exists;
304 static void do_optimize_funccalls(void)
306 optimize_funccalls(firm_const_exists, NULL);
309 static void do_gcse(ir_graph *irg)
311 set_opt_global_cse(1);
312 optimize_graph_df(irg);
314 set_opt_global_cse(0);
317 static void do_lower_highlevel(ir_graph *irg)
319 lower_highlevel_graph(irg, firm_opt.lower_bitfields);
322 static void do_if_conv(ir_graph *irg)
324 opt_if_conv(irg, if_conv_info);
327 static void do_stred(ir_graph *irg)
329 opt_osr(irg, osr_flag_default | osr_flag_keep_reg_pressure | osr_flag_ignore_x86_shift);
332 static void do_inline(void)
334 inline_functions(500, 50);
337 static void do_cloning(void)
339 proc_cloning((float) firm_opt.clone_threshold);
342 static void do_lower_switch(ir_graph *irg)
344 lower_switch(irg, firm_opt.spare_size);
347 typedef enum opt_target {
352 typedef void (*transform_irg_func)(ir_graph *irg);
353 typedef void (*transform_irp_func)(void);
354 typedef void (*func_ptr_t)(void);
366 static opt_config_t opts[] = {
367 { OPT_TARGET_IRP, "rts", (func_ptr_t) rts_map, true, true, true, -1 },
368 { OPT_TARGET_IRG, "combo", (func_ptr_t) combo, true, true, true, TV_COMBO },
369 { OPT_TARGET_IRG, "controlflow", (func_ptr_t) optimize_cf, true, true, true, TV_CF_OPT },
370 { OPT_TARGET_IRG, "local", (func_ptr_t) optimize_graph_df, true, true, true, TV_LOCAL_OPT },
371 { OPT_TARGET_IRP, "gc_irgs", (func_ptr_t) remove_unused_functions, true, false, false, TV_CGANA },
372 { OPT_TARGET_IRP, "tailrec", (func_ptr_t) opt_tail_recursion, true, true, true, TV_TAIL_REC },
373 { OPT_TARGET_IRP, "funccalls", (func_ptr_t) do_optimize_funccalls, true, true, true, TV_REAL_FUNC_CALL },
374 { OPT_TARGET_IRP, "lowerconst", (func_ptr_t) lower_const_code, true, false, false, -1 },
375 { OPT_TARGET_IRG, "onereturn", (func_ptr_t) normalize_one_return, true, false, false, -1 },
376 { OPT_TARGET_IRG, "scalar", (func_ptr_t) scalar_replacement_opt, true, true, true, TV_SCALAR_REPLACE },
377 { OPT_TARGET_IRG, "reassoc", (func_ptr_t) optimize_reassociation, true, true, true, TV_REASSOCIATION },
378 { OPT_TARGET_IRG, "gcse", (func_ptr_t) do_gcse, true, true, true, TV_CODE_PLACE },
379 { OPT_TARGET_IRG, "place", (func_ptr_t) place_code, true, true, true, TV_CODE_PLACE },
380 { OPT_TARGET_IRG, "confirm", (func_ptr_t) construct_confirms, true, true, true, TV_CONFIRM_CREATE },
381 { OPT_TARGET_IRG, "ldst", (func_ptr_t) optimize_load_store, true, true, true, TV_LOAD_STORE },
382 { OPT_TARGET_IRG, "sync", (func_ptr_t) opt_sync, true, true, true, -1 },
383 { OPT_TARGET_IRG, "lower", (func_ptr_t) do_lower_highlevel, true, true, true, -1 },
384 { OPT_TARGET_IRG, "deconv", (func_ptr_t) conv_opt, true, true, true, TV_DECONV },
385 { OPT_TARGET_IRG, "condeval", (func_ptr_t) opt_cond_eval, true, true, true, TV_COND_EVAL },
386 { OPT_TARGET_IRG, "remove_confirms", (func_ptr_t) remove_confirms, true, false, false, TV_CONFIRM_CREATE },
387 { OPT_TARGET_IRG, "gvnpre", (func_ptr_t) do_gvn_pre, true, true, true, -1 },
388 { OPT_TARGET_IRG, "ifconv", (func_ptr_t) do_if_conv, true, true, true, TV_IF_CONV },
389 { OPT_TARGET_IRG, "bool", (func_ptr_t) opt_bool, true, true, true, -1 },
390 { OPT_TARGET_IRG, "stred", (func_ptr_t) do_stred, true, true, true, TV_OSR },
391 { OPT_TARGET_IRG, "dead", (func_ptr_t) dead_node_elimination, true, false, true, TV_DEAD_NODE },
392 { OPT_TARGET_IRP, "inline", (func_ptr_t) do_inline, true, true, true, -1 },
393 { OPT_TARGET_IRP, "clone", (func_ptr_t) do_cloning, true, true, true, -1 },
394 { OPT_TARGET_IRG, "lower_switch", (func_ptr_t) do_lower_switch, true, true, true, -1 },
396 static const int n_opts = sizeof(opts) / sizeof(opts[0]);
398 static opt_config_t *get_opt(const char *name)
401 for (i = 0; i < n_opts; ++i) {
402 opt_config_t *config = &opts[i];
403 if (strcmp(config->name, name) == 0)
411 static void set_opt_enabled(const char *name, bool enabled)
413 opt_config_t *config = get_opt(name);
414 config->enabled = enabled;
417 static void do_irg_opt(ir_graph *irg, const char *name)
419 transform_irg_func func;
421 opt_config_t *config = get_opt(name);
422 assert(config->target == OPT_TARGET_IRG);
423 if (!config->enabled)
426 if (config->timer != -1)
427 timer_push(config->timer);
429 old_irg = current_ir_graph;
430 current_ir_graph = irg;
432 func = (transform_irg_func) config->func;
435 if (config->timer != -1)
438 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, config->name);
439 CHECK_ONE(firm_opt.check_all, irg);
441 current_ir_graph = old_irg;
444 static void do_irp_opt(const char *name)
446 transform_irp_func func;
447 opt_config_t *config = get_opt(name);
448 assert(config->target == OPT_TARGET_IRP);
449 if (!config->enabled)
452 if (config->timer != -1)
453 timer_push(config->timer);
455 func = (transform_irp_func) config->func;
458 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, config->name);
459 CHECK_ALL(firm_opt.check_all);
461 if (config->timer != -1)
466 * run all the Firm optimizations
468 * @param input_filename the name of the (main) source file
470 static void do_firm_optimizations(const char *input_filename)
475 /* FIXME: cloning might ADD new graphs. */
476 irg_dump_no = calloc(get_irp_last_idx(), sizeof(*irg_dump_no));
478 set_opt_strength_red(firm_opt.strength_red);
479 set_opt_scalar_replacement(firm_opt.scalar_replace);
480 set_opt_auto_create_sync(firm_opt.auto_sync);
481 set_opt_alias_analysis(firm_opt.alias_analysis);
483 aa_opt = aa_opt_no_opt;
484 if (firm_opt.strict_alias)
485 aa_opt |= aa_opt_type_based | aa_opt_byte_type_may_alias;
486 if (firm_opt.no_alias)
487 aa_opt = aa_opt_no_alias;
489 set_irp_memory_disambiguator_options(aa_opt);
491 /* parameter passing code should set them directly sometime... */
492 set_opt_enabled("rts", firm_opt.freestanding);
493 set_opt_enabled("gc_irgs", firm_opt.remove_unused);
494 set_opt_enabled("tailrec", firm_opt.tail_rec);
495 set_opt_enabled("funccalls", firm_opt.func_calls);
496 set_opt_enabled("gcse", firm_opt.gcse);
497 set_opt_enabled("place", !firm_opt.gcse);
498 set_opt_enabled("confirm", firm_opt.confirm);
499 set_opt_enabled("remove_confirms", firm_opt.confirm);
500 set_opt_enabled("sync", firm_opt.sync);
501 set_opt_enabled("ldst", firm_opt.load_store);
502 set_opt_enabled("deconv", firm_opt.deconv);
503 set_opt_enabled("condeval", firm_opt.cond_eval);
504 set_opt_enabled("gvnpre", firm_opt.gvn_pre);
505 set_opt_enabled("ifconv", firm_opt.if_conversion);
506 set_opt_enabled("bool", firm_opt.bool_opt);
507 set_opt_enabled("inline", firm_opt.do_inline);
508 set_opt_enabled("clone", firm_opt.cloning);
509 set_opt_enabled("combo", firm_opt.combo);
511 timer_start(TV_ALL_OPT);
515 /* first step: kill dead code */
516 if (firm_opt.combo) {
517 for (i = 0; i < get_irp_n_irgs(); i++) {
518 ir_graph *irg = get_irp_irg(i);
519 do_irg_opt(irg, "combo");
522 for (i = 0; i < get_irp_n_irgs(); i++) {
523 ir_graph *irg = get_irp_irg(i);
524 do_irg_opt(irg, "local");
525 do_irg_opt(irg, "controlflow");
529 do_irp_opt("gc_irgs");
530 do_irp_opt("tailrec");
531 do_irp_opt("funccalls");
532 do_irp_opt("lowerconst");
534 for (i = 0; i < get_irp_n_irgs(); i++) {
535 ir_graph *irg = get_irp_irg(i);
538 /* If SIMD optimization is on, make sure we have only 1 return */
539 if (firm_ext_grs.create_pattern || firm_ext_grs.simd_opt)
540 do_irg_opt("onereturn");
543 do_irg_opt(irg, "scalar");
544 do_irg_opt(irg, "local");
545 do_irg_opt(irg, "reassoc");
546 do_irg_opt(irg, "local");
547 do_irg_opt(irg, "gcse");
549 if (firm_opt.confirm) {
550 /* Confirm construction currently can only handle blocks with only one control
551 flow predecessor. Calling optimize_cf here removes Bad predecessors and help
552 the optimization of switch constructs. */
553 do_irg_opt(irg, "controlflow");
554 do_irg_opt(irg, "confirm");
555 do_irg_opt(irg, "local");
558 do_irg_opt(irg, "controlflow");
559 do_irg_opt(irg, "ldst");
560 do_irg_opt(irg, "lower");
561 do_irg_opt(irg, "deconv");
562 do_irg_opt(irg, "condeval");
563 do_irg_opt(irg, "lower_switch");
564 do_irg_opt(irg, "remove_confirms");
565 do_irg_opt(irg, "gvnpre");
566 do_irg_opt(irg, "place");
567 do_irg_opt(irg, "controlflow");
569 if (firm_opt.if_conversion) {
570 do_irg_opt(irg, "ifconv");
571 do_irg_opt(irg, "local");
572 do_irg_opt(irg, "controlflow");
575 do_irg_opt(irg, "bool");
576 do_irg_opt(irg, "stred");
577 do_irg_opt(irg, "local");
578 do_irg_opt(irg, "dead");
581 do_irp_opt("inline");
584 for (i = 0; i < get_irp_n_irgs(); i++) {
585 ir_graph *irg = get_irp_irg(i);
586 do_irg_opt(irg, "local");
587 do_irg_opt(irg, "controlflow");
588 do_irg_opt(irg, "condeval");
589 do_irg_opt(irg, "local");
590 do_irg_opt(irg, "controlflow");
593 if (firm_dump.ir_graph) {
594 /* recompute backedges for nicer dumps */
595 for (i = 0; i < get_irp_n_irgs(); i++)
596 construct_cf_backedges(get_irp_irg(i));
599 do_irp_opt("gc_irgs");
601 DUMP_ALL(firm_dump.ir_graph, "-opt");
602 /* verify optimized graphs */
603 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
604 ir_graph *irg = get_irp_irg(i);
605 irg_verify(irg, VRFY_ENFORCE_SSA);
608 if (firm_dump.statistic & STAT_AFTER_OPT)
609 stat_dump_snapshot(input_filename, "opt");
611 timer_stop(TV_ALL_OPT);
612 } /* do_firm_optimizations */
615 * compute the size of a type (do implicit lowering)
617 * @param ty a Firm type
619 static int compute_type_size(ir_type *ty)
621 optimization_state_t state;
622 unsigned align_all = 1;
623 int n, size = 0, set = 0;
626 if (get_type_state(ty) == layout_fixed) {
627 /* do not layout already layouted types again */
631 if (is_Method_type(ty) || ty == get_glob_type()) {
632 /* no need for size calculation for method types or the global type */
636 DBG(("compute type size visiting: %s\n", get_type_name(ty)));
638 switch (get_type_tpop_code(ty)) {
641 for (i = 0, n = get_compound_n_members(ty); i < n; ++i) {
642 ir_entity *ent = get_compound_member(ty, i);
643 ir_type *ent_ty = get_entity_type(ent);
644 unsigned align, misalign;
646 /* compute member types */
647 if (! compute_type_size(ent_ty))
650 align = get_type_alignment_bytes(ent_ty);
651 align_all = align > align_all ? align : align_all;
652 misalign = (align ? size % align : 0);
653 size += (misalign ? align - misalign : 0);
655 set_entity_offset(ent, size);
656 size += get_type_size_bytes(ent_ty);
658 DBG((" member %s %s -> (size: %u, align: %u)\n",
659 get_type_name(ent_ty), get_entity_name(ent),
660 get_type_size_bytes(ent_ty), get_type_alignment_bytes(ent_ty)));
662 if (align_all > 0 && size % align_all) {
663 DBG(("align of the struct member: %u, type size: %d\n", align_all, size));
664 size += align_all - (size % align_all);
665 DBG(("correcting type-size to %d\n", size));
667 set_type_alignment_bytes(ty, align_all);
672 for (i = 0, n = get_union_n_members(ty); i < n; ++i) {
673 ir_entity *ent = get_union_member(ty, i);
675 if (! compute_type_size(get_entity_type(ent)))
677 s = get_type_size_bytes(get_entity_type(ent));
679 set_entity_offset(ent, 0);
680 size = (s > size ? s : size);
686 dims = get_array_n_dimensions(ty);
688 if (! compute_type_size(get_array_element_type(ty)))
693 save_optimization_state(&state);
695 set_opt_constant_folding(1);
696 set_opt_algebraic_simplification(1);
698 for (i = 0; i < dims; ++i) {
699 ir_node *lower = get_array_lower_bound(ty, i);
700 ir_node *upper = get_array_upper_bound(ty, i);
701 ir_graph *rem = current_ir_graph;
702 tarval *tv_lower, *tv_upper;
703 long val_lower, val_upper;
705 current_ir_graph = get_const_code_irg();
706 local_optimize_node(lower);
707 local_optimize_node(upper);
708 current_ir_graph = rem;
710 tv_lower = computed_value(lower);
711 tv_upper = computed_value(upper);
713 if (tv_lower == tarval_bad || tv_upper == tarval_bad) {
715 * we cannot calculate the size of this array yet, it
716 * even might be unknown until the end, like argv[]
718 restore_optimization_state(&state);
722 val_upper = get_tarval_long(tv_upper);
723 val_lower = get_tarval_long(tv_lower);
724 size *= val_upper - val_lower;
726 restore_optimization_state(&state);
728 DBG(("array %s -> (elements: %d, element type size: %d)\n",
730 size, get_type_size_bytes(get_array_element_type(ty))));
731 size *= get_type_size_bytes(get_array_element_type(ty));
740 set_type_size_bytes(ty, size);
741 set_type_state(ty, layout_fixed);
744 DBG(("size: %d\n", get_type_size_bytes(ty)));
747 } /* compute_type_size */
750 * layout all non-frame types of the Firm graph
752 static void compute_type_sizes(void)
757 /* all non-frame other types */
758 for (i = get_irp_n_types() - 1; i >= 0; --i) {
759 tp = get_irp_type(i);
760 compute_type_size(tp);
762 if (is_Method_type(tp)) {
763 tp = get_method_value_res_type(tp);
766 /* we have a value result type for this method, lower */
767 compute_type_size(tp);
771 } /* compute_type_sizes */
774 * layout all frame-types of the Firm graph
776 static void compute_frame_type_sizes(void)
781 /* all frame types */
782 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
783 irg = get_irp_irg(i);
784 /* do not optimize away variables in debug mode */
785 if (firm_opt.debug_mode == DBG_MODE_NONE)
787 compute_type_size(get_irg_frame_type(irg));
789 } /* compute_frame_type_sizes */
794 * @param input_filename the name of the (main) source file
796 static void do_firm_lowering(const char *input_filename)
800 /* do class lowering and vtbl creation */
801 // lower_classes_to_struct("vtbl", "m");
804 timer_push(TV_LOWER);
809 if (firm_opt.lower_ll) {
810 lwrdw_param_t init = {
815 def_create_intrinsic_fkt,
820 if (arch_create_intrinsic) {
821 init.create_intrinsic = arch_create_intrinsic;
822 init.ctx = create_intrinsic_ctx;
824 timer_push(TV_DW_LOWER);
829 if (firm_dump.statistic & STAT_AFTER_LOWER)
830 stat_dump_snapshot(input_filename, "low");
832 /* verify lowered graphs */
833 timer_push(TV_VERIFY);
834 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
835 irg_verify(get_irp_irg(i), VRFY_ENFORCE_SSA);
838 DUMP_ALL(firm_dump.ir_graph, "-low");
840 if (firm_opt.enabled) {
841 timer_start(TV_ALL_OPT);
843 /* run reassociation first on all graphs BEFORE the architecture dependent optimizations
845 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
846 ir_graph *irg = get_irp_irg(i);
847 do_irg_opt(irg, "reassoc");
850 /* enable architecture dependent optimizations */
851 arch_dep_set_opts((arch_dep_opts_t)
852 ((firm_opt.muls ? arch_dep_mul_to_shift : arch_dep_none) |
853 (firm_opt.divs ? arch_dep_div_by_const : arch_dep_none) |
854 (firm_opt.mods ? arch_dep_mod_by_const : arch_dep_none) ));
856 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
857 ir_graph *irg = get_irp_irg(i);
859 current_ir_graph = irg;
861 do_irg_opt(irg, "local");
862 do_irg_opt(irg, "gcse");
863 do_irg_opt(irg, "ldst");
864 do_irg_opt(irg, "local");
865 do_irg_opt(irg, "controlflow");
867 if (firm_opt.if_conversion) {
868 do_irg_opt(irg, "ifconv");
869 do_irg_opt(irg, "local");
870 do_irg_opt(irg, "controlflow");
873 do_irg_opt(current_ir_graph, "sync");
875 timer_stop(TV_ALL_OPT);
877 DUMP_ALL(firm_dump.ir_graph, "-low-opt");
881 mark_private_methods();
883 /* set the phase to low */
884 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
885 set_irg_phase_low(get_irp_irg(i));
887 /* all graphs are lowered, set the irp phase to low */
888 set_irp_phase_state(phase_low);
890 if (firm_dump.statistic & STAT_FINAL) {
891 stat_dump_snapshot(input_filename, "final");
893 } /* do_firm_lowering */
896 * Initialize for the Firm-generating back end.
898 void gen_firm_init(void)
900 firm_parameter_t params;
901 unsigned pattern = 0;
903 /* the automatic state is only set if inlining is enabled */
904 firm_opt.auto_inline = firm_opt.do_inline;
906 if (firm_dump.stat_pattern)
907 pattern |= FIRMSTAT_PATTERN_ENABLED;
909 if (firm_dump.stat_dag)
910 pattern |= FIRMSTAT_COUNT_DAG;
912 memset(¶ms, 0, sizeof(params));
913 params.size = sizeof(params);
914 params.enable_statistics = firm_dump.statistic == STAT_NONE ? 0 :
915 FIRMSTAT_ENABLED | FIRMSTAT_COUNT_STRONG_OP | FIRMSTAT_COUNT_CONSTS | pattern;
916 params.initialize_local_func = uninitialized_local_var;
917 params.cc_mask = 0; /* no regparam, cdecl */
918 params.builtin_dbg = NULL;
921 /* Activate Graph rewriting if SIMD optimization is turned on */
922 /* This has to be done before init_firm() is called! */
923 if (firm_ext_grs.simd_opt)
929 if (firm_be_opt.selection == BE_FIRM_BE) {
930 const backend_params *be_params = be_get_backend_param();
932 firm_opt.lower_ll = (a_byte) be_params->do_dw_lowering;
933 params.arch_op_settings = be_params->arch_op_settings;
935 arch_create_intrinsic = be_params->arch_create_intrinsic_fkt;
936 create_intrinsic_ctx = be_params->create_intrinsic_ctx;
938 ad_param = be_params->dep_param;
939 if_conv_info = be_params->if_conv_info;
941 if (be_params->has_imm_fp_mode)
942 firm_imm_fp_mode = be_params->imm_fp_mode;
944 /* OS option must be set to the backend */
945 switch (firm_opt.os_support) {
946 case OS_SUPPORT_MINGW:
947 firm_be_option("ia32-gasmode=mingw");
949 case OS_SUPPORT_MACHO:
950 firm_be_option("ia32-gasmode=macho");
952 case OS_SUPPORT_LINUX:
954 firm_be_option("ia32-gasmode=linux");
958 dbg_init(NULL, NULL, dbg_snprint);
959 edges_init_dbg(firm_opt.vrfy_edges);
960 //cbackend_set_debug_retrieve(dbg_retrieve);
962 set_opt_precise_exc_context(firm_opt.precise_exc);
963 set_opt_fragile_ops(firm_opt.fragile_ops);
965 /* Sel node cannot produce NULL pointers */
966 set_opt_sel_based_null_check_elim(1);
968 /* dynamic dispatch works currently only if whole world scenarios */
969 set_opt_dyn_meth_dispatch(0);
971 arch_dep_init(arch_factory);
973 /* do not run architecture dependent optimizations in building phase */
974 arch_dep_set_opts(arch_dep_none);
976 do_node_verification((firm_verification_t) firm_opt.vrfy);
977 if (firm_dump.filter)
978 only_dump_method_with_name(new_id_from_str(firm_dump.filter));
980 if (firm_opt.enabled) {
982 set_opt_constant_folding(firm_opt.const_folding);
983 set_opt_algebraic_simplification(firm_opt.const_folding);
984 set_opt_cse(firm_opt.cse);
985 set_opt_global_cse(0);
986 set_opt_unreachable_code(1);
987 set_opt_control_flow(firm_opt.control_flow);
988 set_opt_control_flow_weak_simplification(1);
989 set_opt_control_flow_strong_simplification(1);
994 /* do not dump entity ld names */
996 } /* gen_firm_init */
999 * Called, after the Firm generation is completed,
1000 * do all optimizations and backend call here.
1002 * @param out a file handle for the output, may be NULL
1003 * @param input_filename the name of the (main) source file
1004 * @param c_mode non-zero if "C" was compiled
1005 * @param new_firm_const_exists non-zero, if the const attribute was used on functions
1007 void gen_firm_finish(FILE *out, const char *input_filename, int c_mode, int new_firm_const_exists)
1011 firm_const_exists = new_firm_const_exists;
1013 /* the general for dumping option must be set, or the others will not work */
1015 = (a_byte) (firm_dump.ir_graph | firm_dump.all_phases | firm_dump.extbb);
1017 dump_keepalive_edges(1);
1018 dump_consts_local(1);
1019 dump_dominator_information(1);
1020 dump_loop_information(0);
1022 if (!firm_dump.edge_labels)
1023 turn_off_edge_labels();
1025 if (firm_dump.all_types) {
1028 dump_class_hierarchy(0, "");
1029 dump_class_hierarchy(1, "-with-entities");
1033 /* finalize all graphs */
1034 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
1035 ir_graph *irg = get_irp_irg(i);
1037 irg_finalize_cons(irg);
1038 DUMP_ONE(firm_dump.ir_graph, irg, "");
1040 /* verify the graph */
1041 timer_push(TV_VERIFY);
1042 irg_verify(irg, VRFY_ENFORCE_SSA);
1046 timer_push(TV_VERIFY);
1050 /* all graphs are finalized, set the irp phase to high */
1051 set_irp_phase_state(phase_high);
1053 /* BEWARE: kill unreachable code before doing compound lowering */
1054 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
1055 ir_graph *irg = get_irp_irg(i);
1059 /* lower all compound call return values */
1060 lower_compound_params();
1062 /* computes the sizes of all types that are still not computed */
1063 compute_type_sizes();
1065 /* lower copyb nodes */
1066 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
1067 ir_graph *irg = get_irp_irg(i);
1068 lower_CopyB(irg, 128, 4);
1071 if (firm_dump.statistic & STAT_BEFORE_OPT) {
1072 stat_dump_snapshot(input_filename, "noopt");
1075 if (firm_opt.enabled)
1076 do_firm_optimizations(input_filename);
1078 if (firm_dump.gen_firm_asm) {
1079 timer_push(TV_FIRM_ASM);
1080 gen_Firm_assembler(input_filename);
1086 do_firm_lowering(input_filename);
1088 /* computes the sizes of all frame types */
1089 compute_frame_type_sizes();
1091 /* set the phase to low */
1092 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
1093 set_irg_phase_low(get_irp_irg(i));
1097 /** SIMD Optimization Extensions **/
1099 /* Pattern creation step. No code has to be generated, so
1100 exit after pattern creation */
1101 if (firm_ext_grs.create_pattern) {
1102 ext_grs_create_pattern();
1106 /* SIMD optimization step. Uses graph patterns to find
1107 rich instructions and rewrite */
1108 if (firm_ext_grs.simd_opt)
1112 if (firm_dump.statistic & STAT_FINAL_IR)
1113 stat_dump_snapshot(input_filename, "final-ir");
1115 /* run the code generator */
1116 if (firm_be_opt.selection != BE_NONE)
1117 do_codegen(out, input_filename);
1119 if (firm_dump.statistic & STAT_FINAL)
1120 stat_dump_snapshot(input_filename, "final");
1123 if (firm_opt.ycomp_dbg)
1124 firm_finish_ycomp_debugger();
1126 } /* gen_firm_finish */
1129 * Do very early initializations
1131 void firm_early_init(void) {
1132 /* arg: need this here for command line options */
1134 firm_init_options(NULL, 0, NULL);
1135 } /* firm_early_init */