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;
79 fprintf (outfile, "\n%s",
80 (xspaces + (sizeof xspaces - 1 - indent * 2)));
86 fputs ("(nil)", outfile);
91 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
93 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
94 in separate nodes and therefore have to handle them special here. */
96 (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
97 || GET_CODE (in_rtx) == BARRIER))
104 /* print name of expression code */
105 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
107 if (in_rtx->in_struct)
108 fputs ("/s", outfile);
111 fputs ("/v", outfile);
113 if (in_rtx->unchanging)
114 fputs ("/u", outfile);
116 if (in_rtx->integrated)
117 fputs ("/i", outfile);
119 if (in_rtx->frame_related)
120 fputs ("/f", outfile);
123 fputs ("/j", outfile);
126 fputs ("/c", outfile);
128 if (GET_MODE (in_rtx) != VOIDmode)
130 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
131 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
132 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
134 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
138 /* Get the format string and skip the first elements if we have handled
140 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
142 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
143 switch (*format_ptr++)
147 if (XSTR (in_rtx, i) == 0)
148 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
152 fprintf (outfile, " (\\\"%s\\\")", XSTR (in_rtx, i));
154 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
159 /* 0 indicates a field for internal use that should not be printed.
160 An exception is the third field of a NOTE, where it indicates
161 that the field has several different valid contents. */
163 if (i == 3 && GET_CODE (in_rtx) == NOTE)
165 switch (NOTE_LINE_NUMBER (in_rtx))
167 case NOTE_INSN_EH_REGION_BEG:
168 case NOTE_INSN_EH_REGION_END:
169 if (flag_dump_unnumbered)
170 fprintf (outfile, " #");
172 fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
176 case NOTE_INSN_BLOCK_BEG:
177 case NOTE_INSN_BLOCK_END:
178 fprintf (outfile, " ");
179 if (flag_dump_unnumbered)
180 fprintf (outfile, "#");
182 fprintf (outfile, HOST_PTR_PRINTF,
183 (char *) NOTE_BLOCK (in_rtx));
187 case NOTE_INSN_RANGE_START:
188 case NOTE_INSN_RANGE_END:
192 fprintf (outfile, " ");
193 print_rtx (NOTE_RANGE_INFO (in_rtx));
197 case NOTE_INSN_BASIC_BLOCK:
199 basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
201 fprintf (outfile, " [bb %d]", bb->index);
205 case NOTE_INSN_EXPECTED_VALUE:
208 fprintf (outfile, " ");
209 print_rtx (NOTE_EXPECTED_VALUE (in_rtx));
215 const char * const str = X0STR (in_rtx, i);
217 if (NOTE_LINE_NUMBER (in_rtx) < 0)
220 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
224 fprintf (outfile, " (\\\"%s\\\")", str);
226 fprintf (outfile, " (\"%s\")", str);
238 fprintf (outfile, " ");
239 print_rtx (XEXP (in_rtx, i));
248 fprintf (outfile, "\n%s",
249 (xspaces + (sizeof xspaces - 1 - indent * 2)));
252 fputs ("[ ", outfile);
253 if (NULL != XVEC (in_rtx, i))
256 if (XVECLEN (in_rtx, i))
259 for (j = 0; j < XVECLEN (in_rtx, i); j++)
260 print_rtx (XVECEXP (in_rtx, i, j));
265 fprintf (outfile, "\n%s",
266 (xspaces + (sizeof xspaces - 1 - indent * 2)));
268 fputs ("] ", outfile);
274 fprintf (outfile, " ");
275 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
276 fprintf (outfile, " [");
277 fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, XWINT (in_rtx, i));
278 fprintf (outfile, "]");
283 register int value = XINT (in_rtx, i);
286 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
288 fputc (' ', outfile);
289 DEBUG_PRINT_REG (in_rtx, 0, outfile);
291 else if (GET_CODE (in_rtx) == REG && value <= LAST_VIRTUAL_REGISTER)
293 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
294 fprintf (outfile, " %d virtual-incoming-args", value);
295 else if (value == VIRTUAL_STACK_VARS_REGNUM)
296 fprintf (outfile, " %d virtual-stack-vars", value);
297 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
298 fprintf (outfile, " %d virtual-stack-dynamic", value);
299 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
300 fprintf (outfile, " %d virtual-outgoing-args", value);
301 else if (value == VIRTUAL_CFA_REGNUM)
302 fprintf (outfile, " %d virtual-cfa", value);
304 fprintf (outfile, " %d virtual-reg-%d", value,
305 value-FIRST_VIRTUAL_REGISTER);
307 else if (flag_dump_unnumbered
308 && (is_insn || GET_CODE (in_rtx) == NOTE))
309 fputc ('#', outfile);
311 fprintf (outfile, " %d", value);
313 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
314 && XINT (in_rtx, i) >= 0
315 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
316 fprintf (outfile, " {%s}", name);
321 /* Print NOTE_INSN names rather than integer codes. */
324 if (XINT (in_rtx, i) <= 0)
325 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
327 fprintf (outfile, " %d", XINT (in_rtx, i));
332 if (XEXP (in_rtx, i) != NULL)
334 rtx sub = XEXP (in_rtx, i);
335 enum rtx_code subc = GET_CODE (sub);
337 if (GET_CODE (in_rtx) == LABEL_REF && subc != CODE_LABEL)
340 if (flag_dump_unnumbered)
341 fputc ('#', outfile);
343 fprintf (outfile, " %d", INSN_UID (sub));
346 fputs (" 0", outfile);
351 if (XBITMAP (in_rtx, i) == NULL)
352 fputs (" {null}", outfile);
354 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
360 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
364 fputs (" Unknown", outfile);
370 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
375 if (GET_CODE (in_rtx) == MEM)
376 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
378 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
379 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
382 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
383 fprintf (outfile, " [%.16g]", val);
387 if (GET_CODE (in_rtx) == CODE_LABEL)
389 fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
390 if (LABEL_ALTERNATE_NAME (in_rtx))
391 fprintf (outfile, " [alternate name: %s]",
392 LABEL_ALTERNATE_NAME (in_rtx));
395 if (GET_CODE (in_rtx) == CALL_PLACEHOLDER)
396 for (tem = XEXP (in_rtx, 0); tem != 0; tem = NEXT_INSN (tem))
397 if (GET_CODE (tem) == CALL_INSN)
399 fprintf (outfile, " ");
405 && (is_insn || GET_CODE (in_rtx) == NOTE
406 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
410 fputc (')', outfile);
415 /* Print an rtx on the current line of FILE. Initially indent IND
419 print_inline_rtx (outf, x, ind)
424 int oldsaw = sawclose;
425 int oldindent = indent;
435 /* Call this function from the debugger to see what X looks like. */
443 fprintf (stderr, "\n");
446 /* Count of rtx's to print with debug_rtx_list.
447 This global exists because gdb user defined commands have no arguments. */
449 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
451 /* Call this function to print list from X on.
453 N is a count of the rtx's to print. Positive values print from the specified
454 rtx on. Negative values print a window around the rtx.
455 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
458 debug_rtx_list (x, n)
465 count = n == 0 ? 1 : n < 0 ? -n : n;
467 /* If we are printing a window, back up to the start. */
470 for (i = count / 2; i > 0; i--)
472 if (PREV_INSN (x) == 0)
477 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
481 /* Call this function to print an rtx list from START to END inclusive. */
484 debug_rtx_range (start, end)
490 if (!start || start == end)
492 start = NEXT_INSN (start);
496 /* Call this function to search an rtx list to find one with insn uid UID,
497 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
498 The found insn is returned to enable further debugging analysis. */
501 debug_rtx_find (x, uid)
505 while (x != 0 && INSN_UID (x) != uid)
509 debug_rtx_list (x, debug_rtx_count);
514 fprintf (stderr, "insn uid %d not found\n", uid);
519 /* External entry point for printing a chain of insns
520 starting with RTX_FIRST onto file OUTF.
521 A blank line separates insns.
523 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
526 print_rtl (outf, rtx_first)
530 register rtx tmp_rtx;
536 fputs ("(nil)\n", outf);
538 switch (GET_CODE (rtx_first))
546 for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
547 if (! flag_dump_unnumbered
548 || GET_CODE (tmp_rtx) != NOTE || NOTE_LINE_NUMBER (tmp_rtx) < 0)
551 fprintf (outfile, "\n");
556 print_rtx (rtx_first);
560 /* Like print_rtx, except specify a file. */
561 /* Return nonzero if we actually printed anything. */
564 print_rtl_single (outf, x)
570 if (! flag_dump_unnumbered
571 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)