1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
30 /* How to print out a register name.
31 We don't use PRINT_REG because some definitions of PRINT_REG
33 #ifndef DEBUG_PRINT_REG
34 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
35 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
38 /* Array containing all of the register names */
40 #ifdef DEBUG_REGISTER_NAMES
41 static char *reg_names[] = DEBUG_REGISTER_NAMES;
43 static char *reg_names[] = REGISTER_NAMES;
50 static int sawclose = 0;
54 /* Names for patterns. Non-zero only when linked with insn-output.c. */
56 extern char **insn_name_ptr;
58 /* Nonzero means suppress output of instruction numbers and line number
59 notes in debugging dumps.
60 This must be defined here so that programs like gencodes can be linked. */
61 int flag_dump_unnumbered = 0;
63 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
70 register char *format_ptr;
75 fprintf (outfile, "\n%s",
76 (spaces + (sizeof spaces - 1 - indent * 2)));
82 fprintf (outfile, "(nil)");
87 /* print name of expression code */
88 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
90 if (in_rtx->in_struct)
91 fprintf (outfile, "/s");
94 fprintf (outfile, "/v");
96 if (in_rtx->unchanging)
97 fprintf (outfile, "/u");
99 if (in_rtx->integrated)
100 fprintf (outfile, "/i");
102 if (GET_MODE (in_rtx) != VOIDmode)
104 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
105 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
106 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
108 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
111 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
112 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
114 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
115 switch (*format_ptr++)
119 if (i == 3 && GET_CODE (in_rtx) == NOTE
120 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
121 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END
122 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
123 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END))
125 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
130 if (i == 3 && GET_CODE (in_rtx) == NOTE
131 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
132 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
133 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE))
137 fprintf (outfile, " ");
138 print_rtx (NOTE_RANGE_INFO (in_rtx));
143 if (XSTR (in_rtx, i) == 0)
144 fprintf (outfile, " \"\"");
146 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
150 /* 0 indicates a field for internal use that should not be printed. */
157 fprintf (outfile, " ");
158 print_rtx (XEXP (in_rtx, i));
167 fprintf (outfile, "\n%s",
168 (spaces + (sizeof spaces - 1 - indent * 2)));
171 fprintf (outfile, "[ ");
172 if (NULL != XVEC (in_rtx, i))
175 if (XVECLEN (in_rtx, i))
178 for (j = 0; j < XVECLEN (in_rtx, i); j++)
179 print_rtx (XVECEXP (in_rtx, i, j));
184 fprintf (outfile, "\n%s",
185 (spaces + (sizeof spaces - 1 - indent * 2)));
187 fprintf (outfile, "] ");
193 fprintf (outfile, " ");
194 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
199 register int value = XINT (in_rtx, i);
201 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
203 fputc (' ', outfile);
204 DEBUG_PRINT_REG (in_rtx, 0, outfile);
206 else if (flag_dump_unnumbered
207 && (is_insn || GET_CODE (in_rtx) == NOTE))
208 fprintf (outfile, "#");
210 fprintf (outfile, " %d", value);
212 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
214 && XINT (in_rtx, i) >= 0)
215 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
219 /* Print NOTE_INSN names rather than integer codes. */
222 if (XINT (in_rtx, i) <= 0)
223 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
225 fprintf (outfile, " %d", XINT (in_rtx, i));
230 if (XEXP (in_rtx, i) != NULL)
232 if (flag_dump_unnumbered)
233 fprintf (outfile, "#");
235 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
238 fprintf (outfile, " 0");
243 if (XBITMAP (in_rtx, i) == NULL)
244 fprintf (outfile, " {null}");
246 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
252 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
256 fprintf (outfile, " Unknown");
262 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
267 if (GET_CODE (in_rtx) == MEM)
268 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
270 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
271 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
274 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
275 fprintf (outfile, " [%.16g]", val);
279 fprintf (outfile, ")");
283 /* Print an rtx on the current line of FILE. Initially indent IND
287 print_inline_rtx (outf, x, ind)
292 int oldsaw = sawclose;
293 int oldindent = indent;
303 /* Call this function from the debugger to see what X looks like. */
311 fprintf (stderr, "\n");
314 /* Count of rtx's to print with debug_rtx_list.
315 This global exists because gdb user defined commands have no arguments. */
317 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
319 /* Call this function to print list from X on.
321 N is a count of the rtx's to print. Positive values print from the specified
322 rtx on. Negative values print a window around the rtx.
323 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
326 debug_rtx_list (x, n)
333 count = n == 0 ? 1 : n < 0 ? -n : n;
335 /* If we are printing a window, back up to the start. */
338 for (i = count / 2; i > 0; i--)
340 if (PREV_INSN (x) == 0)
345 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
349 /* Call this function to search an rtx list to find one with insn uid UID,
350 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
351 The found insn is returned to enable further debugging analysis. */
354 debug_rtx_find (x, uid)
358 while (x != 0 && INSN_UID (x) != uid)
362 debug_rtx_list (x, debug_rtx_count);
367 fprintf (stderr, "insn uid %d not found\n", uid);
372 /* External entry point for printing a chain of insns
373 starting with RTX_FIRST onto file OUTF.
374 A blank line separates insns.
376 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
379 print_rtl (outf, rtx_first)
383 register rtx tmp_rtx;
389 fprintf (outf, "(nil)\n");
391 switch (GET_CODE (rtx_first))
399 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
401 if (! flag_dump_unnumbered
402 || GET_CODE (tmp_rtx) != NOTE
403 || NOTE_LINE_NUMBER (tmp_rtx) < 0)
406 fprintf (outfile, "\n");
412 print_rtx (rtx_first);
416 /* Like print_rtx, except specify a file. */
417 /* Return nonzero if we actually printed anything. */
420 print_rtl_single (outf, x)
426 if (! flag_dump_unnumbered
427 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)