RISC-V: Silence expected Ada testsuite warning.
[official-gcc.git] / gcc / tree-dump.c
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1 /* Tree-dumping functionality for intermediate representation.
2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 Written by Mark Mitchell <mark@codesourcery.com>
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #include "config.h"
22 #include "system.h"
23 #include "coretypes.h"
24 #include "tree.h"
25 #include "tree-pretty-print.h"
26 #include "tree-dump.h"
27 #include "langhooks.h"
28 #include "tree-iterator.h"
30 static unsigned int queue (dump_info_p, const_tree, int);
31 static void dump_index (dump_info_p, unsigned int);
32 static void dequeue_and_dump (dump_info_p);
33 static void dump_new_line (dump_info_p);
34 static void dump_maybe_newline (dump_info_p);
36 /* Add T to the end of the queue of nodes to dump. Returns the index
37 assigned to T. */
39 static unsigned int
40 queue (dump_info_p di, const_tree t, int flags)
42 dump_queue_p dq;
43 dump_node_info_p dni;
44 unsigned int index;
46 /* Assign the next available index to T. */
47 index = ++di->index;
49 /* Obtain a new queue node. */
50 if (di->free_list)
52 dq = di->free_list;
53 di->free_list = dq->next;
55 else
56 dq = XNEW (struct dump_queue);
58 /* Create a new entry in the splay-tree. */
59 dni = XNEW (struct dump_node_info);
60 dni->index = index;
61 dni->binfo_p = ((flags & DUMP_BINFO) != 0);
62 dq->node = splay_tree_insert (di->nodes, (splay_tree_key) t,
63 (splay_tree_value) dni);
65 /* Add it to the end of the queue. */
66 dq->next = 0;
67 if (!di->queue_end)
68 di->queue = dq;
69 else
70 di->queue_end->next = dq;
71 di->queue_end = dq;
73 /* Return the index. */
74 return index;
77 static void
78 dump_index (dump_info_p di, unsigned int index)
80 fprintf (di->stream, "@%-6u ", index);
81 di->column += 8;
84 /* If T has not already been output, queue it for subsequent output.
85 FIELD is a string to print before printing the index. Then, the
86 index of T is printed. */
88 void
89 queue_and_dump_index (dump_info_p di, const char *field, const_tree t, int flags)
91 unsigned int index;
92 splay_tree_node n;
94 /* If there's no node, just return. This makes for fewer checks in
95 our callers. */
96 if (!t)
97 return;
99 /* See if we've already queued or dumped this node. */
100 n = splay_tree_lookup (di->nodes, (splay_tree_key) t);
101 if (n)
102 index = ((dump_node_info_p) n->value)->index;
103 else
104 /* If we haven't, add it to the queue. */
105 index = queue (di, t, flags);
107 /* Print the index of the node. */
108 dump_maybe_newline (di);
109 fprintf (di->stream, "%-4s: ", field);
110 di->column += 6;
111 dump_index (di, index);
114 /* Dump the type of T. */
116 void
117 queue_and_dump_type (dump_info_p di, const_tree t)
119 queue_and_dump_index (di, "type", TREE_TYPE (t), DUMP_NONE);
122 /* Dump column control */
123 #define SOL_COLUMN 25 /* Start of line column. */
124 #define EOL_COLUMN 55 /* End of line column. */
125 #define COLUMN_ALIGNMENT 15 /* Alignment. */
127 /* Insert a new line in the dump output, and indent to an appropriate
128 place to start printing more fields. */
130 static void
131 dump_new_line (dump_info_p di)
133 fprintf (di->stream, "\n%*s", SOL_COLUMN, "");
134 di->column = SOL_COLUMN;
137 /* If necessary, insert a new line. */
139 static void
140 dump_maybe_newline (dump_info_p di)
142 int extra;
144 /* See if we need a new line. */
145 if (di->column > EOL_COLUMN)
146 dump_new_line (di);
147 /* See if we need any padding. */
148 else if ((extra = (di->column - SOL_COLUMN) % COLUMN_ALIGNMENT) != 0)
150 fprintf (di->stream, "%*s", COLUMN_ALIGNMENT - extra, "");
151 di->column += COLUMN_ALIGNMENT - extra;
155 /* Dump pointer PTR using FIELD to identify it. */
157 void
158 dump_pointer (dump_info_p di, const char *field, void *ptr)
160 dump_maybe_newline (di);
161 fprintf (di->stream, "%-4s: %-8" HOST_WIDE_INT_PRINT "x ", field,
162 (unsigned HOST_WIDE_INT) (uintptr_t) ptr);
163 di->column += 15;
166 /* Dump integer I using FIELD to identify it. */
168 void
169 dump_int (dump_info_p di, const char *field, int i)
171 dump_maybe_newline (di);
172 fprintf (di->stream, "%-4s: %-7d ", field, i);
173 di->column += 14;
176 /* Dump the floating point value R, using FIELD to identify it. */
178 static void
179 dump_real (dump_info_p di, const char *field, const REAL_VALUE_TYPE *r)
181 char buf[32];
182 real_to_decimal (buf, r, sizeof (buf), 0, true);
183 dump_maybe_newline (di);
184 fprintf (di->stream, "%-4s: %s ", field, buf);
185 di->column += strlen (buf) + 7;
188 /* Dump the fixed-point value F, using FIELD to identify it. */
190 static void
191 dump_fixed (dump_info_p di, const char *field, const FIXED_VALUE_TYPE *f)
193 char buf[32];
194 fixed_to_decimal (buf, f, sizeof (buf));
195 dump_maybe_newline (di);
196 fprintf (di->stream, "%-4s: %s ", field, buf);
197 di->column += strlen (buf) + 7;
201 /* Dump the string S. */
203 void
204 dump_string (dump_info_p di, const char *string)
206 dump_maybe_newline (di);
207 fprintf (di->stream, "%-13s ", string);
208 if (strlen (string) > 13)
209 di->column += strlen (string) + 1;
210 else
211 di->column += 14;
214 /* Dump the string field S. */
216 void
217 dump_string_field (dump_info_p di, const char *field, const char *string)
219 dump_maybe_newline (di);
220 fprintf (di->stream, "%-4s: %-7s ", field, string);
221 if (strlen (string) > 7)
222 di->column += 6 + strlen (string) + 1;
223 else
224 di->column += 14;
227 /* Dump the next node in the queue. */
229 static void
230 dequeue_and_dump (dump_info_p di)
232 dump_queue_p dq;
233 splay_tree_node stn;
234 dump_node_info_p dni;
235 tree t;
236 unsigned int index;
237 enum tree_code code;
238 enum tree_code_class code_class;
239 const char* code_name;
241 /* Get the next node from the queue. */
242 dq = di->queue;
243 stn = dq->node;
244 t = (tree) stn->key;
245 dni = (dump_node_info_p) stn->value;
246 index = dni->index;
248 /* Remove the node from the queue, and put it on the free list. */
249 di->queue = dq->next;
250 if (!di->queue)
251 di->queue_end = 0;
252 dq->next = di->free_list;
253 di->free_list = dq;
255 /* Print the node index. */
256 dump_index (di, index);
257 /* And the type of node this is. */
258 if (dni->binfo_p)
259 code_name = "binfo";
260 else
261 code_name = get_tree_code_name (TREE_CODE (t));
262 fprintf (di->stream, "%-16s ", code_name);
263 di->column = 25;
265 /* Figure out what kind of node this is. */
266 code = TREE_CODE (t);
267 code_class = TREE_CODE_CLASS (code);
269 /* Although BINFOs are TREE_VECs, we dump them specially so as to be
270 more informative. */
271 if (dni->binfo_p)
273 unsigned ix;
274 tree base;
275 vec<tree, va_gc> *accesses = BINFO_BASE_ACCESSES (t);
277 dump_child ("type", BINFO_TYPE (t));
279 if (BINFO_VIRTUAL_P (t))
280 dump_string_field (di, "spec", "virt");
282 dump_int (di, "bases", BINFO_N_BASE_BINFOS (t));
283 for (ix = 0; BINFO_BASE_ITERATE (t, ix, base); ix++)
285 tree access = (accesses ? (*accesses)[ix] : access_public_node);
286 const char *string = NULL;
288 if (access == access_public_node)
289 string = "pub";
290 else if (access == access_protected_node)
291 string = "prot";
292 else if (access == access_private_node)
293 string = "priv";
294 else
295 gcc_unreachable ();
297 dump_string_field (di, "accs", string);
298 queue_and_dump_index (di, "binf", base, DUMP_BINFO);
301 goto done;
304 /* We can knock off a bunch of expression nodes in exactly the same
305 way. */
306 if (IS_EXPR_CODE_CLASS (code_class))
308 /* If we're dumping children, dump them now. */
309 queue_and_dump_type (di, t);
311 switch (code_class)
313 case tcc_unary:
314 dump_child ("op 0", TREE_OPERAND (t, 0));
315 break;
317 case tcc_binary:
318 case tcc_comparison:
319 dump_child ("op 0", TREE_OPERAND (t, 0));
320 dump_child ("op 1", TREE_OPERAND (t, 1));
321 break;
323 case tcc_expression:
324 case tcc_reference:
325 case tcc_statement:
326 case tcc_vl_exp:
327 /* These nodes are handled explicitly below. */
328 break;
330 default:
331 gcc_unreachable ();
334 else if (DECL_P (t))
336 expanded_location xloc;
337 /* All declarations have names. */
338 if (DECL_NAME (t))
339 dump_child ("name", DECL_NAME (t));
340 if (HAS_DECL_ASSEMBLER_NAME_P (t)
341 && DECL_ASSEMBLER_NAME_SET_P (t)
342 && DECL_ASSEMBLER_NAME (t) != DECL_NAME (t))
343 dump_child ("mngl", DECL_ASSEMBLER_NAME (t));
344 if (DECL_ABSTRACT_ORIGIN (t))
345 dump_child ("orig", DECL_ABSTRACT_ORIGIN (t));
346 /* And types. */
347 queue_and_dump_type (di, t);
348 dump_child ("scpe", DECL_CONTEXT (t));
349 /* And a source position. */
350 xloc = expand_location (DECL_SOURCE_LOCATION (t));
351 if (xloc.file)
353 const char *filename = lbasename (xloc.file);
355 dump_maybe_newline (di);
356 fprintf (di->stream, "srcp: %s:%-6d ", filename,
357 xloc.line);
358 di->column += 6 + strlen (filename) + 8;
360 /* And any declaration can be compiler-generated. */
361 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_DECL_COMMON)
362 && DECL_ARTIFICIAL (t))
363 dump_string_field (di, "note", "artificial");
364 if (DECL_CHAIN (t) && !dump_flag (di, TDF_SLIM, NULL))
365 dump_child ("chain", DECL_CHAIN (t));
367 else if (code_class == tcc_type)
369 /* All types have qualifiers. */
370 int quals = lang_hooks.tree_dump.type_quals (t);
372 if (quals != TYPE_UNQUALIFIED)
374 fprintf (di->stream, "qual: %c%c%c ",
375 (quals & TYPE_QUAL_CONST) ? 'c' : ' ',
376 (quals & TYPE_QUAL_VOLATILE) ? 'v' : ' ',
377 (quals & TYPE_QUAL_RESTRICT) ? 'r' : ' ');
378 di->column += 14;
381 /* All types have associated declarations. */
382 dump_child ("name", TYPE_NAME (t));
384 /* All types have a main variant. */
385 if (TYPE_MAIN_VARIANT (t) != t)
386 dump_child ("unql", TYPE_MAIN_VARIANT (t));
388 /* And sizes. */
389 dump_child ("size", TYPE_SIZE (t));
391 /* All types have alignments. */
392 dump_int (di, "algn", TYPE_ALIGN (t));
394 else if (code_class == tcc_constant)
395 /* All constants can have types. */
396 queue_and_dump_type (di, t);
398 /* Give the language-specific code a chance to print something. If
399 it's completely taken care of things, don't bother printing
400 anything more ourselves. */
401 if (lang_hooks.tree_dump.dump_tree (di, t))
402 goto done;
404 /* Now handle the various kinds of nodes. */
405 switch (code)
407 int i;
409 case IDENTIFIER_NODE:
410 dump_string_field (di, "strg", IDENTIFIER_POINTER (t));
411 dump_int (di, "lngt", IDENTIFIER_LENGTH (t));
412 break;
414 case TREE_LIST:
415 dump_child ("purp", TREE_PURPOSE (t));
416 dump_child ("valu", TREE_VALUE (t));
417 dump_child ("chan", TREE_CHAIN (t));
418 break;
420 case STATEMENT_LIST:
422 tree_stmt_iterator it;
423 for (i = 0, it = tsi_start (t); !tsi_end_p (it); tsi_next (&it), i++)
425 char buffer[32];
426 sprintf (buffer, "%u", i);
427 dump_child (buffer, tsi_stmt (it));
430 break;
432 case TREE_VEC:
433 dump_int (di, "lngt", TREE_VEC_LENGTH (t));
434 for (i = 0; i < TREE_VEC_LENGTH (t); ++i)
436 char buffer[32];
437 sprintf (buffer, "%u", i);
438 dump_child (buffer, TREE_VEC_ELT (t, i));
440 break;
442 case INTEGER_TYPE:
443 case ENUMERAL_TYPE:
444 dump_int (di, "prec", TYPE_PRECISION (t));
445 dump_string_field (di, "sign", TYPE_UNSIGNED (t) ? "unsigned": "signed");
446 dump_child ("min", TYPE_MIN_VALUE (t));
447 dump_child ("max", TYPE_MAX_VALUE (t));
449 if (code == ENUMERAL_TYPE)
450 dump_child ("csts", TYPE_VALUES (t));
451 break;
453 case REAL_TYPE:
454 dump_int (di, "prec", TYPE_PRECISION (t));
455 break;
457 case FIXED_POINT_TYPE:
458 dump_int (di, "prec", TYPE_PRECISION (t));
459 dump_string_field (di, "sign", TYPE_UNSIGNED (t) ? "unsigned": "signed");
460 dump_string_field (di, "saturating",
461 TYPE_SATURATING (t) ? "saturating": "non-saturating");
462 break;
464 case POINTER_TYPE:
465 dump_child ("ptd", TREE_TYPE (t));
466 break;
468 case REFERENCE_TYPE:
469 dump_child ("refd", TREE_TYPE (t));
470 break;
472 case METHOD_TYPE:
473 dump_child ("clas", TYPE_METHOD_BASETYPE (t));
474 /* Fall through. */
476 case FUNCTION_TYPE:
477 dump_child ("retn", TREE_TYPE (t));
478 dump_child ("prms", TYPE_ARG_TYPES (t));
479 break;
481 case ARRAY_TYPE:
482 dump_child ("elts", TREE_TYPE (t));
483 dump_child ("domn", TYPE_DOMAIN (t));
484 break;
486 case RECORD_TYPE:
487 case UNION_TYPE:
488 if (TREE_CODE (t) == RECORD_TYPE)
489 dump_string_field (di, "tag", "struct");
490 else
491 dump_string_field (di, "tag", "union");
493 dump_child ("flds", TYPE_FIELDS (t));
494 queue_and_dump_index (di, "binf", TYPE_BINFO (t),
495 DUMP_BINFO);
496 break;
498 case CONST_DECL:
499 dump_child ("cnst", DECL_INITIAL (t));
500 break;
502 case DEBUG_EXPR_DECL:
503 dump_int (di, "-uid", DEBUG_TEMP_UID (t));
504 /* Fall through. */
506 case VAR_DECL:
507 case PARM_DECL:
508 case FIELD_DECL:
509 case RESULT_DECL:
510 if (TREE_CODE (t) == PARM_DECL)
511 dump_child ("argt", DECL_ARG_TYPE (t));
512 else
513 dump_child ("init", DECL_INITIAL (t));
514 dump_child ("size", DECL_SIZE (t));
515 dump_int (di, "algn", DECL_ALIGN (t));
517 if (TREE_CODE (t) == FIELD_DECL)
519 if (DECL_FIELD_OFFSET (t))
520 dump_child ("bpos", bit_position (t));
522 else if (VAR_P (t) || TREE_CODE (t) == PARM_DECL)
524 dump_int (di, "used", TREE_USED (t));
525 if (DECL_REGISTER (t))
526 dump_string_field (di, "spec", "register");
528 break;
530 case FUNCTION_DECL:
531 dump_child ("args", DECL_ARGUMENTS (t));
532 if (DECL_EXTERNAL (t))
533 dump_string_field (di, "body", "undefined");
534 if (TREE_PUBLIC (t))
535 dump_string_field (di, "link", "extern");
536 else
537 dump_string_field (di, "link", "static");
538 if (DECL_SAVED_TREE (t) && !dump_flag (di, TDF_SLIM, t))
539 dump_child ("body", DECL_SAVED_TREE (t));
540 break;
542 case INTEGER_CST:
543 fprintf (di->stream, "int: ");
544 print_decs (wi::to_wide (t), di->stream);
545 break;
547 case STRING_CST:
548 fprintf (di->stream, "strg: %-7s ", TREE_STRING_POINTER (t));
549 dump_int (di, "lngt", TREE_STRING_LENGTH (t));
550 break;
552 case REAL_CST:
553 dump_real (di, "valu", TREE_REAL_CST_PTR (t));
554 break;
556 case FIXED_CST:
557 dump_fixed (di, "valu", TREE_FIXED_CST_PTR (t));
558 break;
560 case TRUTH_NOT_EXPR:
561 case ADDR_EXPR:
562 case INDIRECT_REF:
563 case CLEANUP_POINT_EXPR:
564 case SAVE_EXPR:
565 case REALPART_EXPR:
566 case IMAGPART_EXPR:
567 /* These nodes are unary, but do not have code class `1'. */
568 dump_child ("op 0", TREE_OPERAND (t, 0));
569 break;
571 case TRUTH_ANDIF_EXPR:
572 case TRUTH_ORIF_EXPR:
573 case INIT_EXPR:
574 case MODIFY_EXPR:
575 case COMPOUND_EXPR:
576 case PREDECREMENT_EXPR:
577 case PREINCREMENT_EXPR:
578 case POSTDECREMENT_EXPR:
579 case POSTINCREMENT_EXPR:
580 /* These nodes are binary, but do not have code class `2'. */
581 dump_child ("op 0", TREE_OPERAND (t, 0));
582 dump_child ("op 1", TREE_OPERAND (t, 1));
583 break;
585 case COMPONENT_REF:
586 case BIT_FIELD_REF:
587 dump_child ("op 0", TREE_OPERAND (t, 0));
588 dump_child ("op 1", TREE_OPERAND (t, 1));
589 dump_child ("op 2", TREE_OPERAND (t, 2));
590 break;
592 case ARRAY_REF:
593 case ARRAY_RANGE_REF:
594 dump_child ("op 0", TREE_OPERAND (t, 0));
595 dump_child ("op 1", TREE_OPERAND (t, 1));
596 dump_child ("op 2", TREE_OPERAND (t, 2));
597 dump_child ("op 3", TREE_OPERAND (t, 3));
598 break;
600 case COND_EXPR:
601 dump_child ("op 0", TREE_OPERAND (t, 0));
602 dump_child ("op 1", TREE_OPERAND (t, 1));
603 dump_child ("op 2", TREE_OPERAND (t, 2));
604 break;
606 case TRY_FINALLY_EXPR:
607 dump_child ("op 0", TREE_OPERAND (t, 0));
608 dump_child ("op 1", TREE_OPERAND (t, 1));
609 break;
611 case CALL_EXPR:
613 int i = 0;
614 tree arg;
615 call_expr_arg_iterator iter;
616 dump_child ("fn", CALL_EXPR_FN (t));
617 FOR_EACH_CALL_EXPR_ARG (arg, iter, t)
619 char buffer[32];
620 sprintf (buffer, "%u", i);
621 dump_child (buffer, arg);
622 i++;
625 break;
627 case CONSTRUCTOR:
629 unsigned HOST_WIDE_INT cnt;
630 tree index, value;
631 dump_int (di, "lngt", CONSTRUCTOR_NELTS (t));
632 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t), cnt, index, value)
634 dump_child ("idx", index);
635 dump_child ("val", value);
638 break;
640 case BIND_EXPR:
641 dump_child ("vars", TREE_OPERAND (t, 0));
642 dump_child ("body", TREE_OPERAND (t, 1));
643 break;
645 case LOOP_EXPR:
646 dump_child ("body", TREE_OPERAND (t, 0));
647 break;
649 case EXIT_EXPR:
650 dump_child ("cond", TREE_OPERAND (t, 0));
651 break;
653 case RETURN_EXPR:
654 dump_child ("expr", TREE_OPERAND (t, 0));
655 break;
657 case TARGET_EXPR:
658 dump_child ("decl", TREE_OPERAND (t, 0));
659 dump_child ("init", TREE_OPERAND (t, 1));
660 dump_child ("clnp", TREE_OPERAND (t, 2));
661 /* There really are two possible places the initializer can be.
662 After RTL expansion, the second operand is moved to the
663 position of the fourth operand, and the second operand
664 becomes NULL. */
665 dump_child ("init", TREE_OPERAND (t, 3));
666 break;
668 case CASE_LABEL_EXPR:
669 dump_child ("name", CASE_LABEL (t));
670 if (CASE_LOW (t))
672 dump_child ("low ", CASE_LOW (t));
673 if (CASE_HIGH (t))
674 dump_child ("high", CASE_HIGH (t));
676 break;
677 case LABEL_EXPR:
678 dump_child ("name", TREE_OPERAND (t,0));
679 break;
680 case GOTO_EXPR:
681 dump_child ("labl", TREE_OPERAND (t, 0));
682 break;
683 case SWITCH_EXPR:
684 dump_child ("cond", TREE_OPERAND (t, 0));
685 dump_child ("body", TREE_OPERAND (t, 1));
686 break;
687 case OMP_CLAUSE:
689 int i;
690 fprintf (di->stream, "%s\n", omp_clause_code_name[OMP_CLAUSE_CODE (t)]);
691 for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (t)]; i++)
692 dump_child ("op: ", OMP_CLAUSE_OPERAND (t, i));
694 break;
695 default:
696 /* There are no additional fields to print. */
697 break;
700 done:
701 if (dump_flag (di, TDF_ADDRESS, NULL))
702 dump_pointer (di, "addr", (void *)t);
704 /* Terminate the line. */
705 fprintf (di->stream, "\n");
708 /* Return nonzero if FLAG has been specified for the dump, and NODE
709 is not the root node of the dump. */
711 int dump_flag (dump_info_p di, dump_flags_t flag, const_tree node)
713 return (di->flags & flag) && (node != di->node);
716 /* Dump T, and all its children, on STREAM. */
718 void
719 dump_node (const_tree t, dump_flags_t flags, FILE *stream)
721 struct dump_info di;
722 dump_queue_p dq;
723 dump_queue_p next_dq;
725 /* Initialize the dump-information structure. */
726 di.stream = stream;
727 di.index = 0;
728 di.column = 0;
729 di.queue = 0;
730 di.queue_end = 0;
731 di.free_list = 0;
732 di.flags = flags;
733 di.node = t;
734 di.nodes = splay_tree_new (splay_tree_compare_pointers, 0,
735 splay_tree_delete_pointers);
737 /* Queue up the first node. */
738 queue (&di, t, DUMP_NONE);
740 /* Until the queue is empty, keep dumping nodes. */
741 while (di.queue)
742 dequeue_and_dump (&di);
744 /* Now, clean up. */
745 for (dq = di.free_list; dq; dq = next_dq)
747 next_dq = dq->next;
748 free (dq);
750 splay_tree_delete (di.nodes);