3 * @file firm_opt.c -- Firm-generating back end optimizations.
5 * (C) 2005-2007 Michael Beck beck@ipd.info.uni-karlsruhe.de
11 #include <libfirm/firm.h>
12 #include <libfirm/be.h>
16 #include "firm_codegen.h"
17 #include "firm_cmdline.h"
18 #include "firm_timing.h"
21 #define snprintf _snprintf
24 #if defined(_DEBUG) || defined(FIRM_DEBUG)
25 #define DBG(x) dbg_printf x
28 #endif /* _DEBUG || FIRM_DEBUG */
31 /** dump all the graphs depending on cond */
32 #define DUMP_ALL(cond, suffix) \
35 timer_push(TV_VCG_DUMP); \
36 if (firm_dump.no_blocks) \
37 dump_all_ir_graphs(dump_ir_graph, suffix); \
38 else if (firm_dump.extbb) \
39 dump_all_ir_graphs(dump_ir_extblock_graph, suffix);\
41 dump_all_ir_graphs(dump_ir_block_graph, suffix); \
46 /** dump all control flow graphs depending on cond */
47 #define DUMP_ALL_CFG(cond, suffix) \
50 timer_push(TV_VCG_DUMP); \
51 dump_all_ir_graphs(dump_cfg, suffix); \
56 /** check all graphs depending on cond */
57 #define CHECK_ALL(cond) \
61 timer_push(TV_VERIFY); \
62 for (ii = get_irp_n_irgs() - 1; ii >= 0; --ii) \
63 irg_verify(get_irp_irg(ii), VRFY_ENFORCE_SSA); \
70 /** dump graphs irg depending on cond */
71 #define DUMP_ONE(cond, irg, suffix) \
74 timer_push(TV_VCG_DUMP); \
75 if (firm_dump.no_blocks) \
76 dump_ir_graph(irg, suffix); \
77 else if (firm_dump.extbb) \
78 dump_ir_extblock_graph(irg, suffix); \
80 dump_ir_block_graph(irg, suffix); \
85 /** dump control flow graph irg depending on cond */
86 #define DUMP_ONE_CFG(cond, irg, suffix) \
89 timer_push(TV_VCG_DUMP); \
90 dump_cfg(irg, suffix); \
95 /** check a graph irg depending on cond */
96 #define CHECK_ONE(cond, irg) \
99 timer_push(TV_VERIFY); \
100 irg_verify(irg, VRFY_ENFORCE_SSA); \
106 /* set by the backend parameters */
107 static const ir_settings_arch_dep_t *ad_param = NULL;
108 static create_intrinsic_fkt *arch_create_intrinsic = NULL;
109 static void *create_intrinsic_ctx = NULL;
110 static const ir_settings_if_conv_t *if_conv_info = NULL;
112 ir_mode *firm_imm_fp_mode = NULL;
114 /* entities of runtime functions */
115 ir_entity_ptr rts_entities[rts_max];
118 * factory for setting architecture dependent parameters
120 static const ir_settings_arch_dep_t *arch_factory(void)
122 static const ir_settings_arch_dep_t param = {
123 1, /* also use subs */
124 4, /* maximum shifts */
125 31, /* maximum shift amount */
126 NULL, /* use default evaluator */
130 32 /* Mulh allowed up to 32 bit */
133 return ad_param ? ad_param : ¶m;
137 * Map runtime functions.
139 static void rts_map(void) {
140 static const struct {
141 ir_entity_ptr *ent; /**< address of the rts entity */
142 i_mapper_func func; /**< mapper function. */
145 { &rts_entities[rts_abs], i_mapper_abs },
146 { &rts_entities[rts_labs], i_mapper_abs },
147 { &rts_entities[rts_llabs], i_mapper_abs },
148 { &rts_entities[rts_imaxabs], i_mapper_abs },
150 /* double -> double */
151 { &rts_entities[rts_fabs], i_mapper_abs },
152 { &rts_entities[rts_sqrt], i_mapper_sqrt },
153 { &rts_entities[rts_cbrt], i_mapper_cbrt },
154 { &rts_entities[rts_pow], i_mapper_pow },
155 { &rts_entities[rts_exp], i_mapper_exp },
156 { &rts_entities[rts_exp2], i_mapper_exp },
157 { &rts_entities[rts_exp10], i_mapper_exp },
158 { &rts_entities[rts_log], i_mapper_log },
159 { &rts_entities[rts_log2], i_mapper_log2 },
160 { &rts_entities[rts_log10], i_mapper_log10 },
161 { &rts_entities[rts_sin], i_mapper_sin },
162 { &rts_entities[rts_cos], i_mapper_cos },
163 { &rts_entities[rts_tan], i_mapper_tan },
164 { &rts_entities[rts_asin], i_mapper_asin },
165 { &rts_entities[rts_acos], i_mapper_acos },
166 { &rts_entities[rts_atan], i_mapper_atan },
167 { &rts_entities[rts_sinh], i_mapper_sinh },
168 { &rts_entities[rts_cosh], i_mapper_cosh },
169 { &rts_entities[rts_tanh], i_mapper_tanh },
172 { &rts_entities[rts_fabsf], i_mapper_abs },
173 { &rts_entities[rts_sqrtf], i_mapper_sqrt },
174 { &rts_entities[rts_cbrtf], i_mapper_cbrt },
175 { &rts_entities[rts_powf], i_mapper_pow },
176 { &rts_entities[rts_expf], i_mapper_exp },
177 { &rts_entities[rts_exp2f], i_mapper_exp },
178 { &rts_entities[rts_exp10f], i_mapper_exp },
179 { &rts_entities[rts_logf], i_mapper_log },
180 { &rts_entities[rts_log2f], i_mapper_log2 },
181 { &rts_entities[rts_log10f], i_mapper_log10 },
182 { &rts_entities[rts_sinf], i_mapper_sin },
183 { &rts_entities[rts_cosf], i_mapper_cos },
184 { &rts_entities[rts_tanf], i_mapper_tan },
185 { &rts_entities[rts_asinf], i_mapper_asin },
186 { &rts_entities[rts_acosf], i_mapper_acos },
187 { &rts_entities[rts_atanf], i_mapper_atan },
188 { &rts_entities[rts_sinhf], i_mapper_sinh },
189 { &rts_entities[rts_coshf], i_mapper_cosh },
190 { &rts_entities[rts_tanhf], i_mapper_tanh },
192 /* long double -> long double */
193 { &rts_entities[rts_fabsl], i_mapper_abs },
194 { &rts_entities[rts_sqrtl], i_mapper_sqrt },
195 { &rts_entities[rts_cbrtl], i_mapper_cbrt },
196 { &rts_entities[rts_powl], i_mapper_pow },
197 { &rts_entities[rts_expl], i_mapper_exp },
198 { &rts_entities[rts_exp2l], i_mapper_exp },
199 { &rts_entities[rts_exp10l], i_mapper_exp },
200 { &rts_entities[rts_logl], i_mapper_log },
201 { &rts_entities[rts_log2l], i_mapper_log2 },
202 { &rts_entities[rts_log10l], i_mapper_log10 },
203 { &rts_entities[rts_sinl], i_mapper_sin },
204 { &rts_entities[rts_cosl], i_mapper_cos },
205 { &rts_entities[rts_tanl], i_mapper_tan },
206 { &rts_entities[rts_asinl], i_mapper_asin },
207 { &rts_entities[rts_acosl], i_mapper_acos },
208 { &rts_entities[rts_atanl], i_mapper_atan },
209 { &rts_entities[rts_sinhl], i_mapper_sinh },
210 { &rts_entities[rts_coshl], i_mapper_cosh },
211 { &rts_entities[rts_tanhl], i_mapper_tanh },
214 { &rts_entities[rts_memcpy], i_mapper_memcpy },
215 { &rts_entities[rts_memset], i_mapper_memset },
216 { &rts_entities[rts_strcmp], i_mapper_strcmp },
217 { &rts_entities[rts_strncmp], i_mapper_strncmp },
218 { &rts_entities[rts_strlen], i_mapper_strlen }
220 i_record rec[sizeof(mapper)/sizeof(mapper[0])];
223 for (i = n_map = 0; i < sizeof(mapper)/sizeof(mapper[0]); ++i)
224 if (*mapper[i].ent != NULL) {
225 rec[n_map].i_call.kind = INTRINSIC_CALL;
226 rec[n_map].i_call.i_ent = *mapper[i].ent;
227 rec[n_map].i_call.i_mapper = mapper[i].func;
228 rec[n_map].i_call.ctx = NULL;
229 rec[n_map].i_call.link = NULL;
233 lower_intrinsics(rec, n_map, /* part_block_used=*/0);
236 static int *irg_dump_no;
238 static void dump_graph_count(ir_graph *const irg, const char *const suffix)
241 snprintf(name, sizeof(name), "-%02d_%s", irg_dump_no[get_irg_idx(irg)]++, suffix);
242 DUMP_ONE(1, irg, name);
245 static void dump_graph_cfg_count(ir_graph *const irg, const char *const suffix)
248 snprintf(name, sizeof(name), "-%02d_%s", irg_dump_no[get_irg_idx(irg)]++, suffix);
249 DUMP_ONE_CFG(1, irg, name);
252 static void dump_all_count(const char *const suffix)
254 const int n_irgs = get_irp_n_irgs();
257 for (i = 0; i < n_irgs; ++i)
258 dump_graph_count(get_irp_irg(i), suffix);
261 #define DUMP_ONE_C(cond, irg, suffix) \
264 dump_graph_count((irg), (suffix)); \
268 #define DUMP_ONE_CFG_C(cond, irg, suffix) \
271 dump_graph_cfg_count((irg), (suffix)); \
275 #define DUMP_ALL_C(cond, suffix) \
278 dump_all_count((suffix)); \
283 * run all the Firm optimizations
285 * @param input_filename the name of the (main) source file
286 * @param firm_const_exists non-zero, if the const attribute was used on functions
288 static void do_firm_optimizations(const char *input_filename, int firm_const_exists)
294 /* FIXME: cloning might ADD new graphs. */
295 irg_dump_no = calloc(get_irp_last_idx(), sizeof(*irg_dump_no));
297 set_opt_strength_red(firm_opt.strength_red);
298 set_opt_scalar_replacement(firm_opt.scalar_replace);
299 set_opt_auto_create_sync(firm_opt.auto_sync);
300 set_opt_alias_analysis(firm_opt.alias_analysis);
302 aa_opt = aa_opt_no_opt;
303 if (firm_opt.strict_alias)
304 aa_opt |= aa_opt_type_based | aa_opt_byte_type_may_alias;
305 if (firm_opt.no_alias)
306 aa_opt = aa_opt_no_alias;
308 set_irp_memory_disambiguator_options(aa_opt);
310 timer_start(TV_ALL_OPT);
312 if (firm_opt.remove_unused) {
313 ir_entity **keep_methods;
316 /* Analysis that finds the free methods,
317 i.e. methods that are dereferenced.
318 Optimizes polymorphic calls :-). */
319 cgana(&arr_len, &keep_methods);
321 /* Remove methods that are never called. */
322 gc_irgs(arr_len, keep_methods);
327 if (! firm_opt.freestanding) {
329 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, "rts");
330 CHECK_ALL(firm_opt.check_all);
333 /* first step: kill dead code */
334 for (i = 0; i < get_irp_n_irgs(); i++) {
335 irg = current_ir_graph = get_irp_irg(i);
336 /* Confirm construction currently can only handle blocks with only one control
337 flow predecessor. Calling optimize_cf here removes Bad predecessors and help
338 the optimization of switch constructs. */
339 timer_push(TV_CF_OPT);
340 optimize_graph_df(irg);
345 if (firm_opt.func_calls) {
346 timer_push(TV_REAL_FUNC_CALL);
347 optimize_funccalls(firm_const_exists, NULL);
349 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, "func_call");
350 CHECK_ALL(firm_opt.check_all);
353 /* do lowering on the const code irg */
356 for (i = 0; i < get_irp_n_irgs(); i++) {
357 irg = current_ir_graph = get_irp_irg(i);
360 /* If SIMD optimization is on, make sure we have only 1 return */
361 if (firm_ext_grs.create_pattern || firm_ext_grs.simd_opt)
362 normalize_one_return(irg);
367 if (firm_opt.modes) {
368 /* convert all modes into integer if possible */
369 arch_mode_conversion(irg, predefs.mode_uint);
372 timer_push(TV_SCALAR_REPLACE);
373 scalar_replacement_opt(irg);
375 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "scalar");
376 CHECK_ONE(firm_opt.check_all, irg);
378 timer_push(TV_LOCAL_OPT);
379 optimize_graph_df(irg);
381 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "lopt");
382 CHECK_ONE(firm_opt.check_all, irg);
384 timer_push(TV_REASSOCIATION);
385 optimize_reassociation(irg);
387 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "reassoc");
388 CHECK_ONE(firm_opt.check_all, irg);
391 CHECK_ONE(firm_opt.check_all, irg);
393 if (firm_opt.code_place) {
394 timer_push(TV_CODE_PLACE);
395 set_opt_global_cse(1);
396 optimize_graph_df(irg);
398 set_opt_global_cse(0);
400 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "place");
401 CHECK_ONE(firm_opt.check_all, irg);
404 if (firm_opt.confirm) {
405 /* Confirm construction currently can only handle blocks with only one control
406 flow predecessor. Calling optimize_cf here removes Bad predecessors and help
407 the optimization of switch constructs. */
408 timer_push(TV_CF_OPT);
411 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cfopt");
412 CHECK_ONE(firm_opt.check_all, irg);
413 timer_push(TV_CONFIRM_CREATE);
414 construct_confirms(irg);
416 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "confirms");
417 CHECK_ONE(firm_opt.check_all, irg);
419 timer_push(TV_LOCAL_OPT);
420 optimize_graph_df(irg);
422 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "lopt");
423 CHECK_ONE(firm_opt.check_all, irg);
426 if (firm_opt.luffig) {
428 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "ldst2");
429 CHECK_ONE(firm_opt.check_all, irg);
432 timer_push(TV_CF_OPT);
435 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cfopt");
436 CHECK_ONE(firm_opt.check_all, irg);
438 irg_verify(irg, VRFY_ENFORCE_SSA);
439 if (firm_opt.gvn_pre) {
441 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "pre");
442 CHECK_ONE(firm_opt.check_all, irg);
443 irg_verify(irg, VRFY_ENFORCE_SSA);
446 if (firm_opt.load_store) {
447 timer_push(TV_LOAD_STORE);
448 optimize_load_store(irg);
450 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "ldst");
451 CHECK_ONE(firm_opt.check_all, irg);
454 lower_highlevel_graph(irg, firm_opt.lower_bitfields);
456 if (firm_opt.deconv) {
457 timer_push(TV_DECONV);
460 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "deconv");
461 CHECK_ONE(firm_opt.check_all, irg);
464 if (firm_opt.cond_eval) {
465 timer_push(TV_COND_EVAL);
468 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cond_eval");
469 CHECK_ONE(firm_opt.check_all, irg);
472 /* should we really remove the Confirm here? */
473 if (firm_opt.confirm) {
474 timer_push(TV_CONFIRM_CREATE);
475 remove_confirms(irg);
480 compute_postdoms(irg);
481 DUMP_ONE_CFG_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "dom");
482 CHECK_ONE(firm_opt.check_all, irg);
484 construct_backedges(irg);
486 timer_push(TV_CF_OPT);
489 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cfopt");
490 CHECK_ONE(firm_opt.check_all, irg);
492 if (firm_opt.if_conversion) {
493 timer_push(TV_IF_CONV);
494 opt_if_conv(current_ir_graph, if_conv_info);
496 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "if");
497 CHECK_ONE(firm_opt.check_all, current_ir_graph);
499 timer_push(TV_LOCAL_OPT);
500 optimize_graph_df(current_ir_graph);
502 timer_push(TV_CF_OPT);
503 optimize_cf(current_ir_graph);
505 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "after_if");
506 CHECK_ONE(firm_opt.check_all, current_ir_graph);
509 if (firm_opt.bool_opt) {
511 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "bool");
512 CHECK_ONE(firm_opt.check_all, irg);
516 opt_osr(current_ir_graph, osr_flag_default | osr_flag_keep_reg_pressure | osr_flag_ignore_x86_shift);
518 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "stred");
519 CHECK_ONE(firm_opt.check_all, irg);
521 timer_push(TV_LOCAL_OPT);
522 optimize_graph_df(irg);
524 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "lopt");
525 CHECK_ONE(firm_opt.check_all, irg);
527 edges_deactivate(irg);
528 timer_push(TV_DEAD_NODE);
529 dead_node_elimination(irg);
531 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "dead");
532 CHECK_ONE(firm_opt.check_all, irg);
535 if (firm_opt.do_inline) {
536 inline_functions(500, 50);
537 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, "inl");
538 CHECK_ALL(firm_opt.check_all);
540 if (firm_opt.cloning) {
541 proc_cloning((float)firm_opt.clone_threshold);
542 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, "clone");
543 CHECK_ALL(firm_opt.check_all);
545 if (firm_opt.tail_rec) {
546 timer_push(TV_TAIL_REC);
547 opt_tail_recursion();
550 DUMP_ALL_C(firm_dump.ir_graph && firm_dump.all_phases, "tail_rec");
551 CHECK_ALL(firm_opt.check_all);
554 if (firm_opt.cond_eval) {
555 for (i = 0; i < get_irp_n_irgs(); i++) {
556 irg = get_irp_irg(i);
557 timer_push(TV_COND_EVAL);
560 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cond_eval");
561 CHECK_ONE(firm_opt.check_all, irg);
563 timer_push(TV_CF_OPT);
566 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, irg, "cfopt");
567 CHECK_ONE(firm_opt.check_all, irg);
571 if (firm_dump.ir_graph) {
572 /* recompute backedges for nicer dumps */
573 for (i = 0; i < get_irp_n_irgs(); i++)
574 construct_cf_backedges(get_irp_irg(i));
577 if (firm_opt.remove_unused) {
578 ir_entity **keep_methods;
581 /* Analysis that finds the free methods,
582 i.e. methods that are dereferenced.
583 Optimizes polymorphic calls :-). */
584 cgana(&arr_len, &keep_methods);
586 /* Remove methods that are never called. */
587 gc_irgs(arr_len, keep_methods);
593 DUMP_ALL(firm_dump.ir_graph, "-opt");
595 /* verify optimized graphs */
596 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
597 ir_graph *irg = get_irp_irg(i);
598 irg_verify(irg, VRFY_ENFORCE_SSA);
601 if (firm_dump.statistic & STAT_AFTER_OPT)
602 stat_dump_snapshot(input_filename, "opt");
604 timer_stop(TV_ALL_OPT);
605 } /* do_firm_optimizations */
608 * compute the size of a type (do implicit lowering)
610 * @param ty a Firm type
612 static int compute_type_size(ir_type *ty)
614 optimization_state_t state;
615 unsigned align_all = 1;
616 int n, size = 0, set = 0;
619 if (get_type_state(ty) == layout_fixed) {
620 /* do not layout already layouted types again */
624 if (is_Method_type(ty) || ty == get_glob_type()) {
625 /* no need for size calculation for method types or the global type */
629 DBG(("compute type size visiting: %s\n", get_type_name(ty)));
631 switch (get_type_tpop_code(ty)) {
634 for (i = 0, n = get_compound_n_members(ty); i < n; ++i) {
635 ir_entity *ent = get_compound_member(ty, i);
636 ir_type *ent_ty = get_entity_type(ent);
637 unsigned align, misalign;
639 /* compute member types */
640 if (! compute_type_size(ent_ty))
643 align = get_type_alignment_bytes(ent_ty);
644 align_all = align > align_all ? align : align_all;
645 misalign = (align ? size % align : 0);
646 size += (misalign ? align - misalign : 0);
648 set_entity_offset(ent, size);
649 size += get_type_size_bytes(ent_ty);
651 DBG((" member %s %s -> (size: %u, align: %u)\n",
652 get_type_name(ent_ty), get_entity_name(ent),
653 get_type_size_bytes(ent_ty), get_type_alignment_bytes(ent_ty)));
655 if (align_all > 0 && size % align_all) {
656 DBG(("align of the struct member: %u, type size: %d\n", align_all, size));
657 size += align_all - (size % align_all);
658 DBG(("correcting type-size to %d\n", size));
660 set_type_alignment_bytes(ty, align_all);
665 for (i = 0, n = get_union_n_members(ty); i < n; ++i) {
666 ir_entity *ent = get_union_member(ty, i);
668 if (! compute_type_size(get_entity_type(ent)))
670 s = get_type_size_bytes(get_entity_type(ent));
672 set_entity_offset(ent, 0);
673 size = (s > size ? s : size);
679 dims = get_array_n_dimensions(ty);
681 if (! compute_type_size(get_array_element_type(ty)))
686 save_optimization_state(&state);
688 set_opt_constant_folding(1);
690 for (i = 0; i < dims; ++i) {
691 ir_node *lower = get_array_lower_bound(ty, i);
692 ir_node *upper = get_array_upper_bound(ty, i);
693 ir_graph *rem = current_ir_graph;
694 tarval *tv_lower, *tv_upper;
695 long val_lower, val_upper;
697 current_ir_graph = get_const_code_irg();
698 local_optimize_node(lower);
699 local_optimize_node(upper);
700 current_ir_graph = rem;
702 tv_lower = computed_value(lower);
703 tv_upper = computed_value(upper);
705 if (tv_lower == tarval_bad || tv_upper == tarval_bad) {
707 * we cannot calculate the size of this array yet, it
708 * even might be unknown until the end, like argv[]
710 restore_optimization_state(&state);
714 val_upper = get_tarval_long(tv_upper);
715 val_lower = get_tarval_long(tv_lower);
716 size *= val_upper - val_lower;
718 restore_optimization_state(&state);
720 DBG(("array %s -> (elements: %d, element type size: %d)\n",
722 size, get_type_size_bytes(get_array_element_type(ty))));
723 size *= get_type_size_bytes(get_array_element_type(ty));
732 set_type_size_bytes(ty, size);
733 set_type_state(ty, layout_fixed);
736 DBG(("size: %d\n", get_type_size_bytes(ty)));
739 } /* compute_type_size */
742 * layout all non-frame types of the Firm graph
744 static void compute_type_sizes(void)
749 /* all non-frame other types */
750 for (i = get_irp_n_types() - 1; i >= 0; --i) {
751 tp = get_irp_type(i);
752 compute_type_size(tp);
754 if (is_Method_type(tp)) {
755 tp = get_method_value_res_type(tp);
758 /* we have a value result type for this method, lower */
759 compute_type_size(tp);
763 } /* compute_type_sizes */
766 * layout all frame-types of the Firm graph
768 static void compute_frame_type_sizes(void)
773 /* all frame types */
774 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
775 irg = get_irp_irg(i);
776 /* do not optimize away variables in debug mode */
777 if (firm_opt.debug_mode == DBG_MODE_NONE)
779 compute_type_size(get_irg_frame_type(irg));
781 } /* compute_frame_type_sizes */
786 * @param input_filename the name of the (main) source file
788 static void do_firm_lowering(const char *input_filename)
792 /* do class lowering and vtbl creation */
793 // lower_classes_to_struct("vtbl", "m");
796 timer_push(TV_LOWER);
801 if (firm_opt.lower_ll) {
802 lwrdw_param_t init = {
807 def_create_intrinsic_fkt,
812 if (arch_create_intrinsic) {
813 init.create_intrinsic = arch_create_intrinsic;
814 init.ctx = create_intrinsic_ctx;
816 timer_push(TV_DW_LOWER);
821 if (firm_dump.statistic & STAT_AFTER_LOWER)
822 stat_dump_snapshot(input_filename, "low");
824 /* verify lowered graphs */
825 timer_push(TV_VERIFY);
826 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
827 irg_verify(get_irp_irg(i), VRFY_ENFORCE_SSA);
830 DUMP_ALL(firm_dump.ir_graph, "-low");
832 if (firm_opt.enabled) {
833 timer_start(TV_ALL_OPT);
835 /* run reassociation first on all graphs BEFORE the architecture dependent optimizations
837 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
838 current_ir_graph = get_irp_irg(i);
840 timer_push(TV_REASSOCIATION);
841 optimize_reassociation(current_ir_graph);
843 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "reassoc");
844 CHECK_ONE(firm_opt.check_all, current_ir_graph);
847 /* enable architecture dependent optimizations */
848 arch_dep_set_opts((arch_dep_opts_t)
849 ((firm_opt.muls ? arch_dep_mul_to_shift : arch_dep_none) |
850 (firm_opt.divs ? arch_dep_div_by_const : arch_dep_none) |
851 (firm_opt.mods ? arch_dep_mod_by_const : arch_dep_none) ));
853 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
854 current_ir_graph = get_irp_irg(i);
856 if (firm_opt.code_place)
857 set_opt_global_cse(1);
859 timer_push(TV_LOCAL_OPT);
860 optimize_graph_df(current_ir_graph);
862 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "lopt");
863 if (! firm_opt.code_place)
864 CHECK_ONE(firm_opt.check_all, current_ir_graph);
866 if (firm_opt.code_place) {
867 timer_push(TV_CODE_PLACE);
868 place_code(current_ir_graph);
869 set_opt_global_cse(0);
871 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "place");
872 CHECK_ONE(firm_opt.check_all, current_ir_graph);
875 timer_push(TV_LOAD_STORE);
876 optimize_load_store(current_ir_graph);
878 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "ldst");
879 CHECK_ONE(firm_opt.check_all, current_ir_graph);
882 timer_push(TV_LOCAL_OPT);
883 optimize_graph_df(current_ir_graph);
885 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "lopt");
887 timer_push(TV_CF_OPT);
888 optimize_cf(current_ir_graph);
890 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "cf");
891 CHECK_ONE(firm_opt.check_all, current_ir_graph);
893 if (firm_opt.if_conversion) {
894 timer_push(TV_IF_CONV);
895 opt_if_conv(current_ir_graph, if_conv_info);
897 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "if");
898 CHECK_ONE(firm_opt.check_all, current_ir_graph);
900 timer_push(TV_LOCAL_OPT);
901 optimize_graph_df(current_ir_graph);
903 timer_push(TV_CF_OPT);
904 optimize_cf(current_ir_graph);
906 DUMP_ONE_C(firm_dump.ir_graph && firm_dump.all_phases, current_ir_graph, "after_if");
907 CHECK_ONE(firm_opt.check_all, current_ir_graph);
910 timer_stop(TV_ALL_OPT);
912 DUMP_ALL(firm_dump.ir_graph, "-low-opt");
916 mark_private_methods();
918 /* set the phase to low */
919 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
920 set_irg_phase_low(get_irp_irg(i));
922 /* all graphs are lowered, set the irp phase to low */
923 set_irp_phase_state(phase_low);
925 if (firm_dump.statistic & STAT_FINAL) {
926 stat_dump_snapshot(input_filename, "final");
928 } /* do_firm_lowering */
931 * Initialize for the Firm-generating back end.
933 void gen_firm_init(void)
935 firm_parameter_t params;
937 unsigned pattern = 0;
939 /* the automatic state is only set if inlining is enabled */
940 firm_opt.auto_inline = firm_opt.do_inline;
942 if (firm_dump.stat_pattern)
943 pattern |= FIRMSTAT_PATTERN_ENABLED;
945 if (firm_dump.stat_dag)
946 pattern |= FIRMSTAT_COUNT_DAG;
948 memset(¶ms, 0, sizeof(params));
949 params.size = sizeof(params);
950 params.enable_statistics = firm_dump.statistic == STAT_NONE ? 0 :
951 FIRMSTAT_ENABLED | FIRMSTAT_COUNT_STRONG_OP | FIRMSTAT_COUNT_CONSTS | pattern;
952 params.initialize_local_func = uninitialized_local_var;
953 params.cc_mask = 0; /* no regparam, cdecl */
954 params.builtin_dbg = NULL;
957 /* Activate Graph rewriting if SIMD optimization is turned on */
958 /* This has to be done before init_firm() is called! */
959 if (firm_ext_grs.simd_opt)
965 if (firm_be_opt.selection == BE_FIRM_BE) {
966 const backend_params *be_params = be_get_backend_param();
968 firm_opt.lower_ll = (a_byte) be_params->do_dw_lowering;
969 params.arch_op_settings = be_params->arch_op_settings;
971 arch_create_intrinsic = be_params->arch_create_intrinsic_fkt;
972 create_intrinsic_ctx = be_params->create_intrinsic_ctx;
974 ad_param = be_params->dep_param;
975 if_conv_info = be_params->if_conv_info;
977 if (be_params->has_imm_fp_mode)
978 firm_imm_fp_mode = be_params->imm_fp_mode;
981 dbg_init(NULL, NULL, dbg_snprint);
982 edges_init_dbg(firm_opt.vrfy_edges);
983 //cbackend_set_debug_retrieve(dbg_retrieve);
985 set_opt_precise_exc_context(firm_opt.precise_exc);
986 set_opt_fragile_ops(firm_opt.fragile_ops);
988 /* Sel node cannot produce NULL pointers */
989 set_opt_sel_based_null_check_elim(1);
991 /* dynamic dispatch works currently only if whole world scenarios */
992 set_opt_dyn_meth_dispatch(0);
994 arch_dep_init(arch_factory);
996 /* do not run architecture dependent optimizations in building phase */
997 arch_dep_set_opts(arch_dep_none);
999 do_node_verification((firm_verification_t) firm_opt.vrfy);
1000 if (firm_dump.filter)
1001 only_dump_method_with_name(new_id_from_str(firm_dump.filter));
1003 if (firm_opt.enabled) {
1005 set_opt_constant_folding(firm_opt.const_folding);
1006 set_opt_cse(firm_opt.cse);
1007 set_opt_global_cse (0);
1008 set_opt_unreachable_code(1);
1009 set_opt_control_flow(firm_opt.control_flow);
1010 set_opt_control_flow_weak_simplification(1);
1011 set_opt_control_flow_strong_simplification(1);
1016 dump_filter = getenv("FIRM_DUMP_FILTER");
1018 only_dump_method_with_name(new_id_from_str(dump_filter));
1020 /* do not dump entity ld names */
1024 /* init the ycomp debugger extension */
1025 if (firm_opt.ycomp_dbg)
1026 firm_init_ycomp_debugger(firm_opt.ycomp_host, firm_opt.ycomp_port);
1028 } /* gen_firm_init */
1031 * Called, after the Firm generation is completed,
1032 * do all optimizations and backend call here.
1034 * @param out a file handle for the output, may be NULL
1035 * @param input_filename the name of the (main) source file
1036 * @param c_mode non-zero if "C" was compiled
1037 * @param firm_const_exists non-zero, if the const attribute was used on functions
1039 void gen_firm_finish(FILE *out, const char *input_filename, int c_mode, int firm_const_exists)
1043 /* the general for dumping option must be set, or the others will not work */
1045 = (a_byte) (firm_dump.ir_graph | firm_dump.all_phases | firm_dump.extbb);
1047 dump_keepalive_edges(1);
1048 dump_consts_local(1);
1049 dump_dominator_information(1);
1050 dump_loop_information(0);
1052 if (!firm_dump.edge_labels)
1053 turn_off_edge_labels();
1055 if (firm_dump.all_types) {
1058 dump_class_hierarchy(0, "");
1059 dump_class_hierarchy(1, "-with-entities");
1063 /* finalize all graphs */
1064 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
1065 ir_graph *irg = get_irp_irg(i);
1067 irg_finalize_cons(irg);
1068 DUMP_ONE(firm_dump.ir_graph, irg, "");
1070 /* verify the graph */
1071 timer_push(TV_VERIFY);
1072 irg_verify(irg, VRFY_ENFORCE_SSA);
1076 timer_push(TV_VERIFY);
1080 /* all graphs are finalized, set the irp phase to high */
1081 set_irp_phase_state(phase_high);
1083 /* lower all compound call return values */
1084 lower_compound_params();
1086 /* computes the sizes of all types that are still not computed */
1087 compute_type_sizes();
1089 /* lower copyb nodes */
1090 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
1091 ir_graph *irg = get_irp_irg(i);
1092 lower_CopyB(irg, 128, 4);
1095 if (firm_dump.statistic & STAT_BEFORE_OPT) {
1096 stat_dump_snapshot(input_filename, "noopt");
1099 if (firm_opt.enabled)
1100 do_firm_optimizations(input_filename, firm_const_exists);
1102 if (firm_dump.gen_firm_asm) {
1103 timer_push(TV_FIRM_ASM);
1104 gen_Firm_assembler(input_filename);
1110 do_firm_lowering(input_filename);
1112 /* computes the sizes of all frame types */
1113 compute_frame_type_sizes();
1115 /* set the phase to low */
1116 for (i = get_irp_n_irgs() - 1; i >= 0; --i)
1117 set_irg_phase_low(get_irp_irg(i));
1121 /** SIMD Optimization Extensions **/
1123 /* Pattern creation step. No code has to be generated, so
1124 exit after pattern creation */
1125 if (firm_ext_grs.create_pattern) {
1126 ext_grs_create_pattern();
1130 /* SIMD optimization step. Uses graph patterns to find
1131 rich instructions and rewrite */
1132 if (firm_ext_grs.simd_opt)
1136 if (firm_dump.statistic & STAT_FINAL_IR)
1137 stat_dump_snapshot(input_filename, "final-ir");
1139 /* run the code generator */
1140 if (firm_be_opt.selection != BE_NONE)
1141 do_codegen(out, input_filename);
1143 if (firm_dump.statistic & STAT_FINAL)
1144 stat_dump_snapshot(input_filename, "final");
1147 if (firm_opt.ycomp_dbg)
1148 firm_finish_ycomp_debugger();
1150 } /* gen_firm_finish */
1153 * Do very early initializations
1155 void firm_early_init(void) {
1156 /* arg: need this here for command line options */
1158 firm_init_options(NULL, 0, NULL);
1159 } /* firm_early_init */