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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 /* How to print out a register name.
28 We don't use PRINT_REG because some definitions of PRINT_REG
30 #ifndef DEBUG_PRINT_REG
31 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
32 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
35 /* Array containing all of the register names */
37 #ifdef DEBUG_REGISTER_NAMES
38 static char *reg_names[] = DEBUG_REGISTER_NAMES;
40 static char *reg_names[] = REGISTER_NAMES;
47 static int sawclose = 0;
49 /* Names for patterns. Non-zero only when linked with insn-output.c. */
51 extern char **insn_name_ptr;
53 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
61 register char *format_ptr;
66 fprintf (outfile, "\n%s",
67 (spaces + (sizeof spaces - 1 - indent * 2)));
73 fprintf (outfile, "(nil)");
78 /* print name of expression code */
79 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
81 if (in_rtx->in_struct)
82 fprintf (outfile, "/s");
85 fprintf (outfile, "/v");
87 if (in_rtx->unchanging)
88 fprintf (outfile, "/u");
90 if (in_rtx->integrated)
91 fprintf (outfile, "/i");
93 if (GET_MODE (in_rtx) != VOIDmode)
95 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
96 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
97 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
99 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
102 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
103 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
105 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
106 switch (*format_ptr++)
110 if (XSTR (in_rtx, i) == 0)
111 fprintf (outfile, " \"\"");
113 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
117 /* 0 indicates a field for internal use that should not be printed. */
124 fprintf (outfile, " ");
125 print_rtx (XEXP (in_rtx, i));
134 fprintf (outfile, "\n%s",
135 (spaces + (sizeof spaces - 1 - indent * 2)));
138 fprintf (outfile, "[ ");
139 if (NULL != XVEC (in_rtx, i))
142 if (XVECLEN (in_rtx, i))
145 for (j = 0; j < XVECLEN (in_rtx, i); j++)
146 print_rtx (XVECEXP (in_rtx, i, j));
151 fprintf (outfile, "\n%s",
152 (spaces + (sizeof spaces - 1 - indent * 2)));
154 fprintf (outfile, "] ");
161 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
171 register int value = XINT (in_rtx, i);
173 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
175 fputc (' ', outfile);
176 DEBUG_PRINT_REG (in_rtx, 0, outfile);
179 fprintf (outfile, " %d", value);
181 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
183 && XINT (in_rtx, i) >= 0)
184 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
188 /* Print NOTE_INSN names rather than integer codes. */
191 if (XINT (in_rtx, i) <= 0)
192 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
194 fprintf (outfile, " %d", XINT (in_rtx, i));
199 if (XEXP (in_rtx, i) != NULL)
200 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
202 fprintf (outfile, " 0");
207 fprintf (outfile, " Unknown");
213 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
218 fprintf (outfile, ")");
222 /* Call this function from the debugger to see what X looks like. */
230 fprintf (stderr, "\n");
233 /* Count of rtx's to print with debug_rtx_list.
234 This global exists because gdb user defined commands have no arguments. */
236 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
238 /* Call this function to print list from X on.
240 N is a count of the rtx's to print. Positive values print from the specified
241 rtx on. Negative values print a window around the rtx.
242 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
245 debug_rtx_list (x, n)
252 count = n == 0 ? 1 : n < 0 ? -n : n;
254 /* If we are printing a window, back up to the start. */
257 for (i = count / 2; i > 0; i--)
259 if (PREV_INSN (x) == 0)
264 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
268 /* Call this function to search an rtx list to find one with insn uid UID,
269 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
270 The found insn is returned to enable further debugging analysis. */
273 debug_rtx_find(x, uid)
277 while (x != 0 && INSN_UID (x) != uid)
281 debug_rtx_list (x, debug_rtx_count);
286 fprintf (stderr, "insn uid %d not found\n", uid);
291 /* External entry point for printing a chain of insns
292 starting with RTX_FIRST onto file OUTF.
293 A blank line separates insns.
295 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
298 print_rtl (outf, rtx_first)
302 register rtx tmp_rtx;
308 fprintf (outf, "(nil)\n");
310 switch (GET_CODE (rtx_first))
318 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
321 fprintf (outfile, "\n");
326 print_rtx (rtx_first);