1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include "basic-block.h"
31 /* How to print out a register name.
32 We don't use PRINT_REG because some definitions of PRINT_REG
34 #ifndef DEBUG_PRINT_REG
35 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
36 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
39 /* Array containing all of the register names */
41 #ifdef DEBUG_REGISTER_NAMES
42 static const char * const reg_names[] = DEBUG_REGISTER_NAMES;
44 static const char * const reg_names[] = REGISTER_NAMES;
49 static const char xspaces[] = " ";
51 static int sawclose = 0;
55 static void print_rtx PARAMS ((rtx));
57 /* Nonzero means suppress output of instruction numbers and line number
58 notes in debugging dumps.
59 This must be defined here so that programs like gencodes can be linked. */
60 int flag_dump_unnumbered = 0;
62 /* Nonzero if we are dumping graphical description. */
65 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
73 register const char *format_ptr;
78 fprintf (outfile, "\n%s",
79 (xspaces + (sizeof xspaces - 1 - indent * 2)));
85 fputs ("(nil)", outfile);
90 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
92 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
93 in separate nodes and therefore have to handle them special here. */
95 (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
96 || GET_CODE (in_rtx) == BARRIER))
103 /* print name of expression code */
104 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
106 if (in_rtx->in_struct)
107 fputs ("/s", outfile);
110 fputs ("/v", outfile);
112 if (in_rtx->unchanging)
113 fputs ("/u", outfile);
115 if (in_rtx->integrated)
116 fputs ("/i", outfile);
118 if (in_rtx->frame_related)
119 fputs ("/f", outfile);
122 fputs ("/j", outfile);
125 fputs ("/c", outfile);
127 if (GET_MODE (in_rtx) != VOIDmode)
129 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
130 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
131 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
133 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
137 /* Get the format string and skip the first elements if we have handled
139 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
141 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
142 switch (*format_ptr++)
146 if (XSTR (in_rtx, i) == 0)
147 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
151 fprintf (outfile, " (\\\"%s\\\")", XSTR (in_rtx, i));
153 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
158 /* 0 indicates a field for internal use that should not be printed.
159 An exception is the third field of a NOTE, where it indicates
160 that the field has several different valid contents. */
162 if (i == 3 && GET_CODE (in_rtx) == NOTE)
164 if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
165 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END)
167 if (flag_dump_unnumbered)
168 fprintf (outfile, " #");
170 fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
173 else if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
174 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END)
176 fprintf (outfile, " ");
177 if (flag_dump_unnumbered)
178 fprintf (outfile, "#");
180 fprintf (outfile, HOST_PTR_PRINTF,
181 (char *) NOTE_BLOCK (in_rtx));
184 else if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
185 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
186 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE)
190 fprintf (outfile, " ");
191 print_rtx (NOTE_RANGE_INFO (in_rtx));
194 else if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BASIC_BLOCK)
196 basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
197 fprintf (outfile, " [bb %d]", bb->index);
201 const char * const str = X0STR (in_rtx, i);
203 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
207 fprintf (outfile, " (\\\"%s\\\")", str);
209 fprintf (outfile, " (\"%s\")", str);
219 fprintf (outfile, " ");
220 print_rtx (XEXP (in_rtx, i));
229 fprintf (outfile, "\n%s",
230 (xspaces + (sizeof xspaces - 1 - indent * 2)));
233 fputs ("[ ", outfile);
234 if (NULL != XVEC (in_rtx, i))
237 if (XVECLEN (in_rtx, i))
240 for (j = 0; j < XVECLEN (in_rtx, i); j++)
241 print_rtx (XVECEXP (in_rtx, i, j));
246 fprintf (outfile, "\n%s",
247 (xspaces + (sizeof xspaces - 1 - indent * 2)));
249 fputs ("] ", outfile);
255 fprintf (outfile, " ");
256 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
257 fprintf (outfile, " [");
258 fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, XWINT (in_rtx, i));
259 fprintf (outfile, "]");
264 register int value = XINT (in_rtx, i);
267 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
269 fputc (' ', outfile);
270 DEBUG_PRINT_REG (in_rtx, 0, outfile);
272 else if (GET_CODE (in_rtx) == REG && value <= LAST_VIRTUAL_REGISTER)
274 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
275 fprintf (outfile, " %d virtual-incoming-args", value);
276 else if (value == VIRTUAL_STACK_VARS_REGNUM)
277 fprintf (outfile, " %d virtual-stack-vars", value);
278 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
279 fprintf (outfile, " %d virtual-stack-dynamic", value);
280 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
281 fprintf (outfile, " %d virtual-outgoing-args", value);
282 else if (value == VIRTUAL_CFA_REGNUM)
283 fprintf (outfile, " %d virtual-cfa", value);
285 fprintf (outfile, " %d virtual-reg-%d", value,
286 value-FIRST_VIRTUAL_REGISTER);
288 else if (flag_dump_unnumbered
289 && (is_insn || GET_CODE (in_rtx) == NOTE))
290 fputc ('#', outfile);
292 fprintf (outfile, " %d", value);
294 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
295 && XINT (in_rtx, i) >= 0
296 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
297 fprintf (outfile, " {%s}", name);
302 /* Print NOTE_INSN names rather than integer codes. */
305 if (XINT (in_rtx, i) <= 0)
306 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
308 fprintf (outfile, " %d", XINT (in_rtx, i));
313 if (XEXP (in_rtx, i) != NULL)
315 rtx sub = XEXP (in_rtx, i);
316 enum rtx_code subc = GET_CODE (sub);
318 if (GET_CODE (in_rtx) == LABEL_REF
319 && subc != CODE_LABEL)
322 if (flag_dump_unnumbered)
323 fputc ('#', outfile);
325 fprintf (outfile, " %d", INSN_UID (sub));
328 fputs (" 0", outfile);
333 if (XBITMAP (in_rtx, i) == NULL)
334 fputs (" {null}", outfile);
336 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
342 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
346 fputs (" Unknown", outfile);
352 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
357 if (GET_CODE (in_rtx) == MEM)
358 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
360 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
361 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
364 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
365 fprintf (outfile, " [%.16g]", val);
369 if (GET_CODE (in_rtx) == CODE_LABEL)
371 fprintf (outfile, " [num uses: %d]", LABEL_NUSES (in_rtx));
372 if (LABEL_ALTERNATE_NAME (in_rtx))
373 fprintf (outfile, " [alternate name: %s]", LABEL_ALTERNATE_NAME (in_rtx));
377 && (is_insn || GET_CODE (in_rtx) == NOTE
378 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
382 fputc (')', outfile);
387 /* Print an rtx on the current line of FILE. Initially indent IND
391 print_inline_rtx (outf, x, ind)
396 int oldsaw = sawclose;
397 int oldindent = indent;
407 /* Call this function from the debugger to see what X looks like. */
415 fprintf (stderr, "\n");
418 /* Count of rtx's to print with debug_rtx_list.
419 This global exists because gdb user defined commands have no arguments. */
421 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
423 /* Call this function to print list from X on.
425 N is a count of the rtx's to print. Positive values print from the specified
426 rtx on. Negative values print a window around the rtx.
427 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
430 debug_rtx_list (x, n)
437 count = n == 0 ? 1 : n < 0 ? -n : n;
439 /* If we are printing a window, back up to the start. */
442 for (i = count / 2; i > 0; i--)
444 if (PREV_INSN (x) == 0)
449 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
453 /* Call this function to print an rtx list from START to END inclusive. */
456 debug_rtx_range (start, end)
462 if (!start || start == end)
464 start = NEXT_INSN (start);
468 /* Call this function to search an rtx list to find one with insn uid UID,
469 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
470 The found insn is returned to enable further debugging analysis. */
473 debug_rtx_find (x, uid)
477 while (x != 0 && INSN_UID (x) != uid)
481 debug_rtx_list (x, debug_rtx_count);
486 fprintf (stderr, "insn uid %d not found\n", uid);
491 /* External entry point for printing a chain of insns
492 starting with RTX_FIRST onto file OUTF.
493 A blank line separates insns.
495 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
498 print_rtl (outf, rtx_first)
502 register rtx tmp_rtx;
508 fputs ("(nil)\n", outf);
510 switch (GET_CODE (rtx_first))
518 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
520 if (! flag_dump_unnumbered
521 || GET_CODE (tmp_rtx) != NOTE
522 || NOTE_LINE_NUMBER (tmp_rtx) < 0)
525 fprintf (outfile, "\n");
531 print_rtx (rtx_first);
535 /* Like print_rtx, except specify a file. */
536 /* Return nonzero if we actually printed anything. */
539 print_rtl_single (outf, x)
545 if (! flag_dump_unnumbered
546 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)