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. */
28 /* How to print out a register name.
29 We don't use PRINT_REG because some definitions of PRINT_REG
31 #ifndef DEBUG_PRINT_REG
32 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
33 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
36 /* Array containing all of the register names */
38 #ifdef DEBUG_REGISTER_NAMES
39 static char *reg_names[] = DEBUG_REGISTER_NAMES;
41 static char *reg_names[] = REGISTER_NAMES;
48 static int sawclose = 0;
52 /* Names for patterns. Non-zero only when linked with insn-output.c. */
54 extern char **insn_name_ptr;
56 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
63 register char *format_ptr;
68 fprintf (outfile, "\n%s",
69 (spaces + (sizeof spaces - 1 - indent * 2)));
75 fprintf (outfile, "(nil)");
80 /* print name of expression code */
81 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
83 if (in_rtx->in_struct)
84 fprintf (outfile, "/s");
87 fprintf (outfile, "/v");
89 if (in_rtx->unchanging)
90 fprintf (outfile, "/u");
92 if (in_rtx->integrated)
93 fprintf (outfile, "/i");
95 if (GET_MODE (in_rtx) != VOIDmode)
97 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
98 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
99 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
101 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
104 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
105 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
107 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
108 switch (*format_ptr++)
112 if (i == 3 && GET_CODE (in_rtx) == NOTE
113 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
114 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END))
116 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
120 if (XSTR (in_rtx, i) == 0)
121 fprintf (outfile, " \"\"");
123 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
127 /* 0 indicates a field for internal use that should not be printed. */
134 fprintf (outfile, " ");
135 print_rtx (XEXP (in_rtx, i));
144 fprintf (outfile, "\n%s",
145 (spaces + (sizeof spaces - 1 - indent * 2)));
148 fprintf (outfile, "[ ");
149 if (NULL != XVEC (in_rtx, i))
152 if (XVECLEN (in_rtx, i))
155 for (j = 0; j < XVECLEN (in_rtx, i); j++)
156 print_rtx (XVECEXP (in_rtx, i, j));
161 fprintf (outfile, "\n%s",
162 (spaces + (sizeof spaces - 1 - indent * 2)));
164 fprintf (outfile, "] ");
170 fprintf (outfile, " ");
171 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
176 register int value = XINT (in_rtx, i);
178 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
180 fputc (' ', outfile);
181 DEBUG_PRINT_REG (in_rtx, 0, outfile);
184 fprintf (outfile, " %d", value);
186 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
188 && XINT (in_rtx, i) >= 0)
189 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
193 /* Print NOTE_INSN names rather than integer codes. */
196 if (XINT (in_rtx, i) <= 0)
197 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
199 fprintf (outfile, " %d", XINT (in_rtx, i));
204 if (XEXP (in_rtx, i) != NULL)
205 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
207 fprintf (outfile, " 0");
212 fprintf (outfile, " Unknown");
218 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
223 fprintf (outfile, ")");
227 /* Print an rtx on the current line of FILE. Initially indent IND
231 print_inline_rtx (outf, x, ind)
241 /* Call this function from the debugger to see what X looks like. */
249 fprintf (stderr, "\n");
252 /* Count of rtx's to print with debug_rtx_list.
253 This global exists because gdb user defined commands have no arguments. */
255 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
257 /* Call this function to print list from X on.
259 N is a count of the rtx's to print. Positive values print from the specified
260 rtx on. Negative values print a window around the rtx.
261 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
264 debug_rtx_list (x, n)
271 count = n == 0 ? 1 : n < 0 ? -n : n;
273 /* If we are printing a window, back up to the start. */
276 for (i = count / 2; i > 0; i--)
278 if (PREV_INSN (x) == 0)
283 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
287 /* Call this function to search an rtx list to find one with insn uid UID,
288 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
289 The found insn is returned to enable further debugging analysis. */
292 debug_rtx_find (x, uid)
296 while (x != 0 && INSN_UID (x) != uid)
300 debug_rtx_list (x, debug_rtx_count);
305 fprintf (stderr, "insn uid %d not found\n", uid);
310 /* External entry point for printing a chain of insns
311 starting with RTX_FIRST onto file OUTF.
312 A blank line separates insns.
314 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
317 print_rtl (outf, rtx_first)
321 register rtx tmp_rtx;
327 fprintf (outf, "(nil)\n");
329 switch (GET_CODE (rtx_first))
337 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
340 fprintf (outfile, "\n");
345 print_rtx (rtx_first);
349 /* Like print_rtx, except specify a file. */
352 print_rtl_single (outf, x)