1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997, 1998 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;
48 static char spaces[] = " ";
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 /* Nonzero if we are dumping graphical description. */
66 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
74 register char *format_ptr;
79 fprintf (outfile, "\n%s",
80 (spaces + (sizeof spaces - 1 - indent * 2)));
86 fputs ("(nil)", outfile);
91 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
93 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
94 in separate nodes and therefore have to handle them special here. */
96 (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
97 || GET_CODE (in_rtx) == BARRIER))
104 /* print name of expression code */
105 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
107 if (in_rtx->in_struct)
108 fputs ("/s", outfile);
111 fputs ("/v", outfile);
113 if (in_rtx->unchanging)
114 fputs ("/u", outfile);
116 if (in_rtx->integrated)
117 fputs ("/i", outfile);
119 if (GET_MODE (in_rtx) != VOIDmode)
121 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
122 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
123 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
125 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
129 /* Get the format string and skip the first elements if we have handled
131 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
133 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
134 switch (*format_ptr++)
138 if (i == 3 && GET_CODE (in_rtx) == NOTE
139 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
140 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END
141 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
142 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END))
144 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
149 if (i == 3 && GET_CODE (in_rtx) == NOTE
150 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
151 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
152 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE))
156 fprintf (outfile, " ");
157 print_rtx (NOTE_RANGE_INFO (in_rtx));
162 if (XSTR (in_rtx, i) == 0)
163 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
165 fprintf (outfile, dump_for_graph ? " (\\\"%s\\\")" : " (\"%s\")",
170 /* 0 indicates a field for internal use that should not be printed. */
177 fprintf (outfile, " ");
178 print_rtx (XEXP (in_rtx, i));
187 fprintf (outfile, "\n%s",
188 (spaces + (sizeof spaces - 1 - indent * 2)));
191 fputs ("[ ", outfile);
192 if (NULL != XVEC (in_rtx, i))
195 if (XVECLEN (in_rtx, i))
198 for (j = 0; j < XVECLEN (in_rtx, i); j++)
199 print_rtx (XVECEXP (in_rtx, i, j));
204 fprintf (outfile, "\n%s",
205 (spaces + (sizeof spaces - 1 - indent * 2)));
207 fputs ("] ", outfile);
213 fprintf (outfile, " ");
214 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
219 register int value = XINT (in_rtx, i);
221 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
223 fputc (' ', outfile);
224 DEBUG_PRINT_REG (in_rtx, 0, outfile);
226 else if (flag_dump_unnumbered
227 && (is_insn || GET_CODE (in_rtx) == NOTE))
228 fputc ('#', outfile);
230 fprintf (outfile, " %d", value);
232 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
234 && XINT (in_rtx, i) >= 0)
235 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
239 /* Print NOTE_INSN names rather than integer codes. */
242 if (XINT (in_rtx, i) <= 0)
243 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
245 fprintf (outfile, " %d", XINT (in_rtx, i));
250 if (XEXP (in_rtx, i) != NULL)
252 if (flag_dump_unnumbered)
253 fputc ('#', outfile);
255 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
258 fputs (" 0", outfile);
263 if (XBITMAP (in_rtx, i) == NULL)
264 fputs (" {null}", outfile);
266 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
272 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
276 fputs (" Unknown", outfile);
282 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
287 if (GET_CODE (in_rtx) == MEM)
288 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
290 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
291 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
294 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
295 fprintf (outfile, " [%.16g]", val);
300 && (is_insn || GET_CODE (in_rtx) == NOTE
301 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
305 fputc (')', outfile);
310 /* Print an rtx on the current line of FILE. Initially indent IND
314 print_inline_rtx (outf, x, ind)
319 int oldsaw = sawclose;
320 int oldindent = indent;
330 /* Call this function from the debugger to see what X looks like. */
338 fprintf (stderr, "\n");
341 /* Count of rtx's to print with debug_rtx_list.
342 This global exists because gdb user defined commands have no arguments. */
344 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
346 /* Call this function to print list from X on.
348 N is a count of the rtx's to print. Positive values print from the specified
349 rtx on. Negative values print a window around the rtx.
350 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
353 debug_rtx_list (x, n)
360 count = n == 0 ? 1 : n < 0 ? -n : n;
362 /* If we are printing a window, back up to the start. */
365 for (i = count / 2; i > 0; i--)
367 if (PREV_INSN (x) == 0)
372 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
376 /* Call this function to search an rtx list to find one with insn uid UID,
377 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
378 The found insn is returned to enable further debugging analysis. */
381 debug_rtx_find (x, uid)
385 while (x != 0 && INSN_UID (x) != uid)
389 debug_rtx_list (x, debug_rtx_count);
394 fprintf (stderr, "insn uid %d not found\n", uid);
399 /* External entry point for printing a chain of insns
400 starting with RTX_FIRST onto file OUTF.
401 A blank line separates insns.
403 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
406 print_rtl (outf, rtx_first)
410 register rtx tmp_rtx;
416 fputs ("(nil)\n", outf);
418 switch (GET_CODE (rtx_first))
426 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
428 if (! flag_dump_unnumbered
429 || GET_CODE (tmp_rtx) != NOTE
430 || NOTE_LINE_NUMBER (tmp_rtx) < 0)
433 fprintf (outfile, "\n");
439 print_rtx (rtx_first);
443 /* Like print_rtx, except specify a file. */
444 /* Return nonzero if we actually printed anything. */
447 print_rtl_single (outf, x)
453 if (! flag_dump_unnumbered
454 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)