1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992 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;
50 /* Names for patterns. Non-zero only when linked with insn-output.c. */
52 extern char **insn_name_ptr;
54 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
62 register char *format_ptr;
67 fprintf (outfile, "\n%s",
68 (spaces + (sizeof spaces - 1 - indent * 2)));
74 fprintf (outfile, "(nil)");
79 /* print name of expression code */
80 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
82 if (in_rtx->in_struct)
83 fprintf (outfile, "/s");
86 fprintf (outfile, "/v");
88 if (in_rtx->unchanging)
89 fprintf (outfile, "/u");
91 if (in_rtx->integrated)
92 fprintf (outfile, "/i");
94 if (GET_MODE (in_rtx) != VOIDmode)
96 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
97 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
98 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
100 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
103 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
104 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
106 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
107 switch (*format_ptr++)
111 if (XSTR (in_rtx, i) == 0)
112 fprintf (outfile, " \"\"");
114 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
118 /* 0 indicates a field for internal use that should not be printed. */
125 fprintf (outfile, " ");
126 print_rtx (XEXP (in_rtx, i));
135 fprintf (outfile, "\n%s",
136 (spaces + (sizeof spaces - 1 - indent * 2)));
139 fprintf (outfile, "[ ");
140 if (NULL != XVEC (in_rtx, i))
143 if (XVECLEN (in_rtx, i))
146 for (j = 0; j < XVECLEN (in_rtx, i); j++)
147 print_rtx (XVECEXP (in_rtx, i, j));
152 fprintf (outfile, "\n%s",
153 (spaces + (sizeof spaces - 1 - indent * 2)));
155 fprintf (outfile, "] ");
162 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
172 register int value = XINT (in_rtx, i);
174 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
176 fputc (' ', outfile);
177 DEBUG_PRINT_REG (in_rtx, 0, outfile);
180 fprintf (outfile, " %d", value);
182 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
184 && XINT (in_rtx, i) >= 0)
185 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
189 /* Print NOTE_INSN names rather than integer codes. */
192 if (XINT (in_rtx, i) <= 0)
193 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
195 fprintf (outfile, " %d", XINT (in_rtx, i));
200 if (XEXP (in_rtx, i) != NULL)
201 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
203 fprintf (outfile, " 0");
208 fprintf (outfile, " Unknown");
214 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
219 fprintf (outfile, ")");
223 /* Call this function from the debugger to see what X looks like. */
231 fprintf (stderr, "\n");
234 /* Count of rtx's to print with debug_rtx_list.
235 This global exists because gdb user defined commands have no arguments. */
237 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
239 /* Call this function to print list from X on.
241 N is a count of the rtx's to print. Positive values print from the specified
242 rtx on. Negative values print a window around the rtx.
243 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
246 debug_rtx_list (x, n)
253 count = n == 0 ? 1 : n < 0 ? -n : n;
255 /* If we are printing a window, back up to the start. */
258 for (i = count / 2; i > 0; i--)
260 if (PREV_INSN (x) == 0)
265 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
269 /* Call this function to search an rtx list to find one with insn uid UID,
270 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
271 The found insn is returned to enable further debugging analysis. */
274 debug_rtx_find(x, uid)
278 while (x != 0 && INSN_UID (x) != uid)
282 debug_rtx_list (x, debug_rtx_count);
287 fprintf (stderr, "insn uid %d not found\n", uid);
292 /* External entry point for printing a chain of insns
293 starting with RTX_FIRST onto file OUTF.
294 A blank line separates insns.
296 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
299 print_rtl (outf, rtx_first)
303 register rtx tmp_rtx;
309 fprintf (outf, "(nil)\n");
311 switch (GET_CODE (rtx_first))
319 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
322 fprintf (outfile, "\n");
327 print_rtx (rtx_first);