2 Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000, 2002, 2003
3 Free Software Foundation, Inc.
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 2, or (at your option) any later
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 #include "coretypes.h"
29 /* We don't want the tree code checking code for the access to the
30 DECL_NAME to be included in the gen* programs. */
31 #undef ENABLE_TREE_CHECKING
35 #include "hard-reg-set.h"
36 #include "basic-block.h"
41 static int sawclose = 0;
45 static void print_rtx (rtx);
47 /* String printed at beginning of each RTL when it is dumped.
48 This string is set to ASM_COMMENT_START when the RTL is dumped in
49 the assembly output file. */
50 const char *print_rtx_head = "";
52 /* Nonzero means suppress output of instruction numbers and line number
53 notes in debugging dumps.
54 This must be defined here so that programs like gencodes can be linked. */
55 int flag_dump_unnumbered = 0;
57 /* Nonzero means use simplified format without flags, modes, etc. */
60 /* Nonzero if we are dumping graphical description. */
63 /* Nonzero to dump all call_placeholder alternatives. */
64 static int debug_call_placeholder_verbose;
67 print_mem_expr (FILE *outfile, tree expr)
69 if (TREE_CODE (expr) == COMPONENT_REF)
71 if (TREE_OPERAND (expr, 0))
72 print_mem_expr (outfile, TREE_OPERAND (expr, 0));
74 fputs (" <variable>", outfile);
75 if (DECL_NAME (TREE_OPERAND (expr, 1)))
76 fprintf (outfile, ".%s",
77 IDENTIFIER_POINTER (DECL_NAME (TREE_OPERAND (expr, 1))));
79 else if (TREE_CODE (expr) == INDIRECT_REF)
81 fputs (" (*", outfile);
82 print_mem_expr (outfile, TREE_OPERAND (expr, 0));
85 else if (DECL_NAME (expr))
86 fprintf (outfile, " %s", IDENTIFIER_POINTER (DECL_NAME (expr)));
87 else if (TREE_CODE (expr) == RESULT_DECL)
88 fputs (" <result>", outfile);
90 fputs (" <anonymous>", outfile);
93 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
96 print_rtx (rtx in_rtx)
100 const char *format_ptr;
107 fputc (' ', outfile);
109 fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
115 fputs ("(nil)", outfile);
119 else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
121 fprintf (outfile, "(??? bad code %d\n)", GET_CODE (in_rtx));
126 is_insn = INSN_P (in_rtx);
128 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
129 in separate nodes and therefore have to handle them special here. */
131 && (is_insn || GET_CODE (in_rtx) == NOTE
132 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
139 /* Print name of expression code. */
140 if (flag_simple && GET_CODE (in_rtx) == CONST_INT)
141 fputc ('(', outfile);
143 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
147 if (RTX_FLAG (in_rtx, in_struct))
148 fputs ("/s", outfile);
150 if (RTX_FLAG (in_rtx, volatil))
151 fputs ("/v", outfile);
153 if (RTX_FLAG (in_rtx, unchanging))
154 fputs ("/u", outfile);
156 if (RTX_FLAG (in_rtx, integrated))
157 fputs ("/i", outfile);
159 if (RTX_FLAG (in_rtx, frame_related))
160 fputs ("/f", outfile);
162 if (RTX_FLAG (in_rtx, jump))
163 fputs ("/j", outfile);
165 if (RTX_FLAG (in_rtx, call))
166 fputs ("/c", outfile);
168 if (GET_MODE (in_rtx) != VOIDmode)
170 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
171 if (GET_CODE (in_rtx) == EXPR_LIST
172 || GET_CODE (in_rtx) == INSN_LIST)
173 fprintf (outfile, ":%s",
174 GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
176 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
181 #ifndef GENERATOR_FILE
182 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
186 /* Get the format string and skip the first elements if we have handled
188 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
189 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
190 switch (*format_ptr++)
195 str = XTMPL (in_rtx, i);
200 str = XSTR (in_rtx, i);
204 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
208 fprintf (outfile, " (\\\"%s\\\")", str);
210 fprintf (outfile, " (\"%s\")", str);
215 /* 0 indicates a field for internal use that should not be printed.
216 An exception is the third field of a NOTE, where it indicates
217 that the field has several different valid contents. */
219 if (i == 1 && GET_CODE (in_rtx) == REG)
221 if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
222 fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
224 #ifndef GENERATOR_FILE
225 else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
227 int flags = SYMBOL_REF_FLAGS (in_rtx);
229 fprintf (outfile, " [flags 0x%x]", flags);
231 else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
233 tree decl = SYMBOL_REF_DECL (in_rtx);
235 print_node_brief (outfile, "", decl, 0);
238 else if (i == 4 && GET_CODE (in_rtx) == NOTE)
240 switch (NOTE_LINE_NUMBER (in_rtx))
242 case NOTE_INSN_EH_REGION_BEG:
243 case NOTE_INSN_EH_REGION_END:
244 if (flag_dump_unnumbered)
245 fprintf (outfile, " #");
247 fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
251 case NOTE_INSN_BLOCK_BEG:
252 case NOTE_INSN_BLOCK_END:
253 fprintf (outfile, " ");
254 if (flag_dump_unnumbered)
255 fprintf (outfile, "#");
257 fprintf (outfile, HOST_PTR_PRINTF,
258 (char *) NOTE_BLOCK (in_rtx));
262 case NOTE_INSN_BASIC_BLOCK:
264 basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
266 fprintf (outfile, " [bb %d]", bb->index);
270 case NOTE_INSN_EXPECTED_VALUE:
273 fprintf (outfile, " ");
274 print_rtx (NOTE_EXPECTED_VALUE (in_rtx));
278 case NOTE_INSN_DELETED_LABEL:
279 if (NOTE_SOURCE_FILE (in_rtx))
280 fprintf (outfile, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx));
282 fprintf (outfile, " \"\"");
285 case NOTE_INSN_PREDICTION:
286 if (NOTE_PREDICTION (in_rtx))
287 fprintf (outfile, " [ %d %d ] ",
288 (int)NOTE_PREDICTION_ALG (in_rtx),
289 (int) NOTE_PREDICTION_FLAGS (in_rtx));
291 fprintf (outfile, " [ ERROR ]");
296 const char * const str = X0STR (in_rtx, i);
298 if (NOTE_LINE_NUMBER (in_rtx) < 0)
301 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
305 fprintf (outfile, " (\\\"%s\\\")", str);
307 fprintf (outfile, " (\"%s\")", str);
319 fprintf (outfile, " ");
320 print_rtx (XEXP (in_rtx, i));
329 fprintf (outfile, "\n%s%*s",
330 print_rtx_head, indent * 2, "");
333 fputs (" [", outfile);
334 if (NULL != XVEC (in_rtx, i))
337 if (XVECLEN (in_rtx, i))
340 for (j = 0; j < XVECLEN (in_rtx, i); j++)
341 print_rtx (XVECEXP (in_rtx, i, j));
346 fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
348 fputs ("]", outfile);
355 fprintf (outfile, " ");
356 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
358 fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
363 if (i == 4 && INSN_P (in_rtx))
365 #ifndef GENERATOR_FILE
366 /* Pretty-print insn locators. Ignore scoping as it is mostly
367 redundant with line number information and do not print anything
368 when there is no location information available. */
369 if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
370 fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
373 else if (i == 6 && GET_CODE (in_rtx) == NOTE)
375 /* This field is only used for NOTE_INSN_DELETED_LABEL, and
376 other times often contains garbage from INSN->NOTE death. */
377 if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_DELETED_LABEL)
378 fprintf (outfile, " %d", XINT (in_rtx, i));
382 int value = XINT (in_rtx, i);
385 #ifndef GENERATOR_FILE
386 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
387 fprintf (outfile, " %d %s", REGNO (in_rtx),
388 reg_names[REGNO (in_rtx)]);
389 else if (GET_CODE (in_rtx) == REG
390 && value <= LAST_VIRTUAL_REGISTER)
392 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
393 fprintf (outfile, " %d virtual-incoming-args", value);
394 else if (value == VIRTUAL_STACK_VARS_REGNUM)
395 fprintf (outfile, " %d virtual-stack-vars", value);
396 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
397 fprintf (outfile, " %d virtual-stack-dynamic", value);
398 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
399 fprintf (outfile, " %d virtual-outgoing-args", value);
400 else if (value == VIRTUAL_CFA_REGNUM)
401 fprintf (outfile, " %d virtual-cfa", value);
403 fprintf (outfile, " %d virtual-reg-%d", value,
404 value-FIRST_VIRTUAL_REGISTER);
408 if (flag_dump_unnumbered
409 && (is_insn || GET_CODE (in_rtx) == NOTE))
410 fputc ('#', outfile);
412 fprintf (outfile, " %d", value);
414 if (GET_CODE (in_rtx) == REG && REG_ATTRS (in_rtx))
416 fputs (" [", outfile);
417 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
418 fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
419 if (REG_EXPR (in_rtx))
420 print_mem_expr (outfile, REG_EXPR (in_rtx));
422 if (REG_OFFSET (in_rtx))
423 fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
424 REG_OFFSET (in_rtx));
425 fputs (" ]", outfile);
428 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
429 && XINT (in_rtx, i) >= 0
430 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
431 fprintf (outfile, " {%s}", name);
436 /* Print NOTE_INSN names rather than integer codes. */
439 if (XINT (in_rtx, i) >= (int) NOTE_INSN_BIAS
440 && XINT (in_rtx, i) < (int) NOTE_INSN_MAX)
441 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
443 fprintf (outfile, " %d", XINT (in_rtx, i));
448 if (XEXP (in_rtx, i) != NULL)
450 rtx sub = XEXP (in_rtx, i);
451 enum rtx_code subc = GET_CODE (sub);
453 if (GET_CODE (in_rtx) == LABEL_REF)
456 && NOTE_LINE_NUMBER (sub) == NOTE_INSN_DELETED_LABEL)
458 if (flag_dump_unnumbered)
459 fprintf (outfile, " [# deleted]");
461 fprintf (outfile, " [%d deleted]", INSN_UID (sub));
466 if (subc != CODE_LABEL)
470 if (flag_dump_unnumbered)
471 fputs (" #", outfile);
473 fprintf (outfile, " %d", INSN_UID (sub));
476 fputs (" 0", outfile);
481 if (XBITMAP (in_rtx, i) == NULL)
482 fputs (" {null}", outfile);
484 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
489 fprintf (outfile, " " HOST_PTR_PRINTF, (void *) XTREE (in_rtx, i));
493 fputs (" Unknown", outfile);
498 if (XBBDEF (in_rtx, i))
499 fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
504 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
509 switch (GET_CODE (in_rtx))
511 #ifndef GENERATOR_FILE
513 fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC, MEM_ALIAS_SET (in_rtx));
515 if (MEM_EXPR (in_rtx))
516 print_mem_expr (outfile, MEM_EXPR (in_rtx));
518 if (MEM_OFFSET (in_rtx))
519 fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
520 INTVAL (MEM_OFFSET (in_rtx)));
522 if (MEM_SIZE (in_rtx))
523 fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC,
524 INTVAL (MEM_SIZE (in_rtx)));
526 if (MEM_ALIGN (in_rtx) != 1)
527 fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
529 fputc (']', outfile);
533 if (FLOAT_MODE_P (GET_MODE (in_rtx)))
537 real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
539 fprintf (outfile, " %s", s);
541 real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
543 fprintf (outfile, " [%s]", s);
549 fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
550 switch (LABEL_KIND (in_rtx))
552 case LABEL_NORMAL: break;
553 case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
554 case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
555 case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
560 case CALL_PLACEHOLDER:
561 if (debug_call_placeholder_verbose)
563 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile);
564 for (tem = XEXP (in_rtx, 0); tem != 0; tem = NEXT_INSN (tem))
566 fputs ("\n ", outfile);
567 print_inline_rtx (outfile, tem, 4);
570 tem = XEXP (in_rtx, 1);
572 fputs ("\n ])\n (const_string \"tail_call\") (sequence [",
574 for (; tem != 0; tem = NEXT_INSN (tem))
576 fputs ("\n ", outfile);
577 print_inline_rtx (outfile, tem, 4);
580 tem = XEXP (in_rtx, 2);
582 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [",
584 for (; tem != 0; tem = NEXT_INSN (tem))
586 fputs ("\n ", outfile);
587 print_inline_rtx (outfile, tem, 4);
590 fputs ("\n ])\n ])", outfile);
594 for (tem = XEXP (in_rtx, 0); tem != 0; tem = NEXT_INSN (tem))
595 if (GET_CODE (tem) == CALL_INSN)
597 fprintf (outfile, " ");
608 && (is_insn || GET_CODE (in_rtx) == NOTE
609 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
613 fputc (')', outfile);
618 /* Print an rtx on the current line of FILE. Initially indent IND
622 print_inline_rtx (FILE *outf, rtx x, int ind)
624 int oldsaw = sawclose;
625 int oldindent = indent;
635 /* Call this function from the debugger to see what X looks like. */
643 fprintf (stderr, "\n");
646 /* Count of rtx's to print with debug_rtx_list.
647 This global exists because gdb user defined commands have no arguments. */
649 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
651 /* Call this function to print list from X on.
653 N is a count of the rtx's to print. Positive values print from the specified
654 rtx on. Negative values print a window around the rtx.
655 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
658 debug_rtx_list (rtx x, int n)
663 count = n == 0 ? 1 : n < 0 ? -n : n;
665 /* If we are printing a window, back up to the start. */
668 for (i = count / 2; i > 0; i--)
670 if (PREV_INSN (x) == 0)
675 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
678 fprintf (stderr, "\n");
682 /* Call this function to print an rtx list from START to END inclusive. */
685 debug_rtx_range (rtx start, rtx end)
690 fprintf (stderr, "\n");
691 if (!start || start == end)
693 start = NEXT_INSN (start);
697 /* Call this function to search an rtx list to find one with insn uid UID,
698 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
699 The found insn is returned to enable further debugging analysis. */
702 debug_rtx_find (rtx x, int uid)
704 while (x != 0 && INSN_UID (x) != uid)
708 debug_rtx_list (x, debug_rtx_count);
713 fprintf (stderr, "insn uid %d not found\n", uid);
718 /* External entry point for printing a chain of insns
719 starting with RTX_FIRST onto file OUTF.
720 A blank line separates insns.
722 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
725 print_rtl (FILE *outf, rtx rtx_first)
734 fputs (print_rtx_head, outf);
735 fputs ("(nil)\n", outf);
738 switch (GET_CODE (rtx_first))
746 for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
747 if (! flag_dump_unnumbered
748 || GET_CODE (tmp_rtx) != NOTE || NOTE_LINE_NUMBER (tmp_rtx) < 0)
750 fputs (print_rtx_head, outfile);
752 fprintf (outfile, "\n");
757 fputs (print_rtx_head, outfile);
758 print_rtx (rtx_first);
762 /* Like print_rtx, except specify a file. */
763 /* Return nonzero if we actually printed anything. */
766 print_rtl_single (FILE *outf, rtx x)
770 if (! flag_dump_unnumbered
771 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)
773 fputs (print_rtx_head, outfile);
782 /* Like print_rtl except without all the detail; for example,
783 if RTX is a CONST_INT then print in decimal format. */
786 print_simple_rtl (FILE *outf, rtx x)