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. */
27 #include "basic-block.h"
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 (in_rtx->frame_related)
122 fputs ("/f", outfile);
125 fputs ("/j", outfile);
128 fputs ("/c", outfile);
130 if (GET_MODE (in_rtx) != VOIDmode)
132 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
133 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
134 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
136 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
140 /* Get the format string and skip the first elements if we have handled
142 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
144 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
145 switch (*format_ptr++)
149 if (i == 3 && GET_CODE (in_rtx) == NOTE
150 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_BEG
151 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_EH_REGION_END
152 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_BEG
153 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BLOCK_END))
155 fprintf (outfile, " %d", NOTE_BLOCK_NUMBER (in_rtx));
160 if (i == 3 && GET_CODE (in_rtx) == NOTE
161 && (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_START
162 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_RANGE_END
163 || NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_LIVE))
167 fprintf (outfile, " ");
168 print_rtx (NOTE_RANGE_INFO (in_rtx));
173 if (i == 3 && GET_CODE (in_rtx) == NOTE
174 && NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_BASIC_BLOCK)
176 basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
177 fprintf (outfile, " [bb %d]", bb->index);
181 if (XSTR (in_rtx, i) == 0)
182 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
184 fprintf (outfile, dump_for_graph ? " (\\\"%s\\\")" : " (\"%s\")",
189 /* 0 indicates a field for internal use that should not be printed. */
196 fprintf (outfile, " ");
197 print_rtx (XEXP (in_rtx, i));
206 fprintf (outfile, "\n%s",
207 (xspaces + (sizeof xspaces - 1 - indent * 2)));
210 fputs ("[ ", outfile);
211 if (NULL != XVEC (in_rtx, i))
214 if (XVECLEN (in_rtx, i))
217 for (j = 0; j < XVECLEN (in_rtx, i); j++)
218 print_rtx (XVECEXP (in_rtx, i, j));
223 fprintf (outfile, "\n%s",
224 (xspaces + (sizeof xspaces - 1 - indent * 2)));
226 fputs ("] ", outfile);
232 fprintf (outfile, " ");
233 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
234 fprintf (outfile, " [");
235 fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, XWINT (in_rtx, i));
236 fprintf (outfile, "]");
241 register int value = XINT (in_rtx, i);
243 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
245 fputc (' ', outfile);
246 DEBUG_PRINT_REG (in_rtx, 0, outfile);
248 else if (flag_dump_unnumbered
249 && (is_insn || GET_CODE (in_rtx) == NOTE))
250 fputc ('#', outfile);
252 fprintf (outfile, " %d", value);
254 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
256 && XINT (in_rtx, i) >= 0)
257 fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
261 /* Print NOTE_INSN names rather than integer codes. */
264 if (XINT (in_rtx, i) <= 0)
265 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
267 fprintf (outfile, " %d", XINT (in_rtx, i));
272 if (XEXP (in_rtx, i) != NULL)
274 if (flag_dump_unnumbered)
275 fputc ('#', outfile);
277 fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
280 fputs (" 0", outfile);
285 if (XBITMAP (in_rtx, i) == NULL)
286 fputs (" {null}", outfile);
288 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
294 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
298 fputs (" Unknown", outfile);
304 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
309 if (GET_CODE (in_rtx) == MEM)
310 fprintf (outfile, " %d", MEM_ALIAS_SET (in_rtx));
312 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
313 if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
316 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
317 fprintf (outfile, " [%.16g]", val);
321 if (GET_CODE (in_rtx) == CODE_LABEL)
322 fprintf (outfile, " [num uses: %d]", LABEL_NUSES (in_rtx));
325 && (is_insn || GET_CODE (in_rtx) == NOTE
326 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
330 fputc (')', outfile);
335 /* Print an rtx on the current line of FILE. Initially indent IND
339 print_inline_rtx (outf, x, ind)
344 int oldsaw = sawclose;
345 int oldindent = indent;
355 /* Call this function from the debugger to see what X looks like. */
363 fprintf (stderr, "\n");
366 /* Count of rtx's to print with debug_rtx_list.
367 This global exists because gdb user defined commands have no arguments. */
369 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
371 /* Call this function to print list from X on.
373 N is a count of the rtx's to print. Positive values print from the specified
374 rtx on. Negative values print a window around the rtx.
375 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
378 debug_rtx_list (x, n)
385 count = n == 0 ? 1 : n < 0 ? -n : n;
387 /* If we are printing a window, back up to the start. */
390 for (i = count / 2; i > 0; i--)
392 if (PREV_INSN (x) == 0)
397 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
401 /* Call this function to search an rtx list to find one with insn uid UID,
402 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
403 The found insn is returned to enable further debugging analysis. */
406 debug_rtx_find (x, uid)
410 while (x != 0 && INSN_UID (x) != uid)
414 debug_rtx_list (x, debug_rtx_count);
419 fprintf (stderr, "insn uid %d not found\n", uid);
424 /* External entry point for printing a chain of insns
425 starting with RTX_FIRST onto file OUTF.
426 A blank line separates insns.
428 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
431 print_rtl (outf, rtx_first)
435 register rtx tmp_rtx;
441 fputs ("(nil)\n", outf);
443 switch (GET_CODE (rtx_first))
451 for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
453 if (! flag_dump_unnumbered
454 || GET_CODE (tmp_rtx) != NOTE
455 || NOTE_LINE_NUMBER (tmp_rtx) < 0)
458 fprintf (outfile, "\n");
464 print_rtx (rtx_first);
468 /* Like print_rtx, except specify a file. */
469 /* Return nonzero if we actually printed anything. */
472 print_rtl_single (outf, x)
478 if (! flag_dump_unnumbered
479 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)