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 (i == 3 && GET_CODE (in_rtx) == NOTE
112 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
113 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END))
115 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
119 if (XSTR (in_rtx, i) == 0)
120 fprintf (outfile, " \"\"");
122 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
126 /* 0 indicates a field for internal use that should not be printed. */
133 fprintf (outfile, " ");
134 print_rtx (XEXP (in_rtx, i));
143 fprintf (outfile, "\n%s",
144 (spaces + (sizeof spaces - 1 - indent * 2)));
147 fprintf (outfile, "[ ");
148 if (NULL != XVEC (in_rtx, i))
151 if (XVECLEN (in_rtx, i))
154 for (j = 0; j < XVECLEN (in_rtx, i); j++)
155 print_rtx (XVECEXP (in_rtx, i, j));
160 fprintf (outfile, "\n%s",
161 (spaces + (sizeof spaces - 1 - indent * 2)));
163 fprintf (outfile, "] ");
169 fprintf (outfile, " ");
170 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
175 register int value = XINT (in_rtx, i);
177 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
179 fputc (' ', outfile);
180 DEBUG_PRINT_REG (in_rtx, 0, outfile);
183 fprintf (outfile, " %d", value);
185 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
187 && XINT (in_rtx, i) >= 0)
188 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
192 /* Print NOTE_INSN names rather than integer codes. */
195 if (XINT (in_rtx, i) <= 0)
196 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
198 fprintf (outfile, " %d", XINT (in_rtx, i));
203 if (XEXP (in_rtx, i) != NULL)
204 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
206 fprintf (outfile, " 0");
211 fprintf (outfile, " Unknown");
217 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
222 fprintf (outfile, ")");
226 /* Call this function from the debugger to see what X looks like. */
234 fprintf (stderr, "\n");
237 /* Count of rtx's to print with debug_rtx_list.
238 This global exists because gdb user defined commands have no arguments. */
240 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
242 /* Call this function to print list from X on.
244 N is a count of the rtx's to print. Positive values print from the specified
245 rtx on. Negative values print a window around the rtx.
246 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
249 debug_rtx_list (x, n)
256 count = n == 0 ? 1 : n < 0 ? -n : n;
258 /* If we are printing a window, back up to the start. */
261 for (i = count / 2; i > 0; i--)
263 if (PREV_INSN (x) == 0)
268 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
272 /* Call this function to search an rtx list to find one with insn uid UID,
273 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
274 The found insn is returned to enable further debugging analysis. */
277 debug_rtx_find(x, uid)
281 while (x != 0 && INSN_UID (x) != uid)
285 debug_rtx_list (x, debug_rtx_count);
290 fprintf (stderr, "insn uid %d not found\n", uid);
295 /* External entry point for printing a chain of insns
296 starting with RTX_FIRST onto file OUTF.
297 A blank line separates insns.
299 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
302 print_rtl (outf, rtx_first)
306 register rtx tmp_rtx;
312 fprintf (outf, "(nil)\n");
314 switch (GET_CODE (rtx_first))
322 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
325 fprintf (outfile, "\n");
330 print_rtx (rtx_first);