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 const char xspaces[] = " ";
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 static void print_rtx PROTO ((rtx));
60 /* Nonzero means suppress output of instruction numbers and line number
61 notes in debugging dumps.
62 This must be defined here so that programs like gencodes can be linked. */
63 int flag_dump_unnumbered = 0;
65 /* Nonzero if we are dumping graphical description. */
68 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
76 register char *format_ptr;
81 fprintf (outfile, "\n%s",
82 (xspaces + (sizeof xspaces - 1 - indent * 2)));
88 fputs ("(nil)", outfile);
93 is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
95 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
96 in separate nodes and therefore have to handle them special here. */
98 (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
99 || GET_CODE (in_rtx) == BARRIER))
106 /* print name of expression code */
107 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
109 if (in_rtx->in_struct)
110 fputs ("/s", outfile);
113 fputs ("/v", outfile);
115 if (in_rtx->unchanging)
116 fputs ("/u", outfile);
118 if (in_rtx->integrated)
119 fputs ("/i", outfile);
121 if (GET_MODE (in_rtx) != VOIDmode)
123 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
124 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
125 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
127 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
131 /* Get the format string and skip the first elements if we have handled
133 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
135 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
136 switch (*format_ptr++)
140 if (i == 3 && GET_CODE (in_rtx) == NOTE
141 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
142 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END
143 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
144 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END))
146 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
151 if (i == 3 && GET_CODE (in_rtx) == NOTE
152 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
153 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
154 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE))
158 fprintf (outfile, " ");
159 print_rtx (NOTE_RANGE_INFO (in_rtx));
164 if (XSTR (in_rtx, i) == 0)
165 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
167 fprintf (outfile, dump_for_graph ? " (\\\"%s\\\")" : " (\"%s\")",
172 /* 0 indicates a field for internal use that should not be printed. */
179 fprintf (outfile, " ");
180 print_rtx (XEXP (in_rtx, i));
189 fprintf (outfile, "\n%s",
190 (xspaces + (sizeof xspaces - 1 - indent * 2)));
193 fputs ("[ ", outfile);
194 if (NULL != XVEC (in_rtx, i))
197 if (XVECLEN (in_rtx, i))
200 for (j = 0; j < XVECLEN (in_rtx, i); j++)
201 print_rtx (XVECEXP (in_rtx, i, j));
206 fprintf (outfile, "\n%s",
207 (xspaces + (sizeof xspaces - 1 - indent * 2)));
209 fputs ("] ", outfile);
215 fprintf (outfile, " ");
216 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
221 register int value = XINT (in_rtx, i);
223 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
225 fputc (' ', outfile);
226 DEBUG_PRINT_REG (in_rtx, 0, outfile);
228 else if (flag_dump_unnumbered
229 && (is_insn || GET_CODE (in_rtx) == NOTE))
230 fputc ('#', outfile);
232 fprintf (outfile, " %d", value);
234 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
236 && XINT (in_rtx, i) >= 0)
237 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
241 /* Print NOTE_INSN names rather than integer codes. */
244 if (XINT (in_rtx, i) <= 0)
245 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
247 fprintf (outfile, " %d", XINT (in_rtx, i));
252 if (XEXP (in_rtx, i) != NULL)
254 if (flag_dump_unnumbered)
255 fputc ('#', outfile);
257 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
260 fputs (" 0", outfile);
265 if (XBITMAP (in_rtx, i) == NULL)
266 fputs (" {null}", outfile);
268 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
274 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
278 fputs (" Unknown", outfile);
284 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
289 if (GET_CODE (in_rtx) == MEM)
290 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
292 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
293 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
296 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
297 fprintf (outfile, " [%.16g]", val);
302 && (is_insn || GET_CODE (in_rtx) == NOTE
303 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
307 fputc (')', outfile);
312 /* Print an rtx on the current line of FILE. Initially indent IND
316 print_inline_rtx (outf, x, ind)
321 int oldsaw = sawclose;
322 int oldindent = indent;
332 /* Call this function from the debugger to see what X looks like. */
340 fprintf (stderr, "\n");
343 /* Count of rtx's to print with debug_rtx_list.
344 This global exists because gdb user defined commands have no arguments. */
346 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
348 /* Call this function to print list from X on.
350 N is a count of the rtx's to print. Positive values print from the specified
351 rtx on. Negative values print a window around the rtx.
352 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
355 debug_rtx_list (x, n)
362 count = n == 0 ? 1 : n < 0 ? -n : n;
364 /* If we are printing a window, back up to the start. */
367 for (i = count / 2; i > 0; i--)
369 if (PREV_INSN (x) == 0)
374 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
378 /* Call this function to search an rtx list to find one with insn uid UID,
379 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
380 The found insn is returned to enable further debugging analysis. */
383 debug_rtx_find (x, uid)
387 while (x != 0 && INSN_UID (x) != uid)
391 debug_rtx_list (x, debug_rtx_count);
396 fprintf (stderr, "insn uid %d not found\n", uid);
401 /* External entry point for printing a chain of insns
402 starting with RTX_FIRST onto file OUTF.
403 A blank line separates insns.
405 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
408 print_rtl (outf, rtx_first)
412 register rtx tmp_rtx;
418 fputs ("(nil)\n", outf);
420 switch (GET_CODE (rtx_first))
428 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
430 if (! flag_dump_unnumbered
431 || GET_CODE (tmp_rtx) != NOTE
432 || NOTE_LINE_NUMBER (tmp_rtx) < 0)
435 fprintf (outfile, "\n");
441 print_rtx (rtx_first);
445 /* Like print_rtx, except specify a file. */
446 /* Return nonzero if we actually printed anything. */
449 print_rtl_single (outf, x)
455 if (! flag_dump_unnumbered
456 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)