1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include "hard-reg-set.h"
29 #include "basic-block.h"
31 /* How to print out a register name.
32 We don't use PRINT_REG because some definitions of PRINT_REG
34 #ifndef DEBUG_PRINT_REG
35 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
36 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
39 /* Array containing all of the register names */
41 #ifdef DEBUG_REGISTER_NAMES
42 static const char * const debug_reg_names[] = DEBUG_REGISTER_NAMES;
43 #define reg_names debug_reg_names
45 const char * reg_names[] = REGISTER_NAMES;
50 static const char xspaces[] = " ";
52 static int sawclose = 0;
56 static void print_rtx PARAMS ((rtx));
58 /* String printed at beginning of each RTL when it is dumped.
59 This string is set to ASM_COMMENT_START when the RTL is dumped in
60 the assembly output file. */
61 const char *print_rtx_head = "";
63 /* Nonzero means suppress output of instruction numbers and line number
64 notes in debugging dumps.
65 This must be defined here so that programs like gencodes can be linked. */
66 int flag_dump_unnumbered = 0;
68 /* Nonzero if we are dumping graphical description. */
71 /* Nonzero to dump all call_placeholder alternatives. */
72 static int debug_call_placeholder_verbose;
74 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
82 register const char *format_ptr;
88 fprintf (outfile, "\n%s%s",
90 (xspaces + (sizeof xspaces - 1 - indent * 2)));
96 fputs ("(nil)", outfile);
101 is_insn = (INSN_P (in_rtx));
103 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
104 in separate nodes and therefore have to handle them special here. */
105 if (dump_for_graph &&
106 (is_insn || GET_CODE (in_rtx) == NOTE || GET_CODE (in_rtx) == CODE_LABEL
107 || GET_CODE (in_rtx) == BARRIER))
114 /* print name of expression code */
115 fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
117 if (in_rtx->in_struct)
118 fputs ("/s", outfile);
121 fputs ("/v", outfile);
123 if (in_rtx->unchanging)
124 fputs ("/u", outfile);
126 if (in_rtx->integrated)
127 fputs ("/i", outfile);
129 if (in_rtx->frame_related)
130 fputs ("/f", outfile);
133 fputs ("/j", outfile);
136 fputs ("/c", outfile);
138 if (GET_MODE (in_rtx) != VOIDmode)
140 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
141 if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
142 fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
144 fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
148 /* Get the format string and skip the first elements if we have handled
150 format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
152 for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
153 switch (*format_ptr++)
157 if (XSTR (in_rtx, i) == 0)
158 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
162 fprintf (outfile, " (\\\"%s\\\")", XSTR (in_rtx, i));
164 fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
169 /* 0 indicates a field for internal use that should not be printed.
170 An exception is the third field of a NOTE, where it indicates
171 that the field has several different valid contents. */
173 if (i == 3 && GET_CODE (in_rtx) == NOTE)
175 switch (NOTE_LINE_NUMBER (in_rtx))
177 case NOTE_INSN_EH_REGION_BEG:
178 case NOTE_INSN_EH_REGION_END:
179 if (flag_dump_unnumbered)
180 fprintf (outfile, " #");
182 fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
186 case NOTE_INSN_BLOCK_BEG:
187 case NOTE_INSN_BLOCK_END:
188 fprintf (outfile, " ");
189 if (flag_dump_unnumbered)
190 fprintf (outfile, "#");
192 fprintf (outfile, HOST_PTR_PRINTF,
193 (char *) NOTE_BLOCK (in_rtx));
197 case NOTE_INSN_RANGE_BEG:
198 case NOTE_INSN_RANGE_END:
202 fprintf (outfile, " ");
203 print_rtx (NOTE_RANGE_INFO (in_rtx));
207 case NOTE_INSN_BASIC_BLOCK:
209 basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
211 fprintf (outfile, " [bb %d]", bb->index);
215 case NOTE_INSN_EXPECTED_VALUE:
218 fprintf (outfile, " ");
219 print_rtx (NOTE_EXPECTED_VALUE (in_rtx));
223 case NOTE_INSN_DELETED_LABEL:
224 if (NOTE_SOURCE_FILE (in_rtx))
225 fprintf (outfile, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx));
227 fprintf (outfile, " \"\"");
232 const char * const str = X0STR (in_rtx, i);
234 if (NOTE_LINE_NUMBER (in_rtx) < 0)
237 fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
241 fprintf (outfile, " (\\\"%s\\\")", str);
243 fprintf (outfile, " (\"%s\")", str);
255 fprintf (outfile, " ");
256 print_rtx (XEXP (in_rtx, i));
265 fprintf (outfile, "\n%s%s",
267 (xspaces + (sizeof xspaces - 1 - indent * 2)));
270 fputs ("[ ", outfile);
271 if (NULL != XVEC (in_rtx, i))
274 if (XVECLEN (in_rtx, i))
277 for (j = 0; j < XVECLEN (in_rtx, i); j++)
278 print_rtx (XVECEXP (in_rtx, i, j));
283 fprintf (outfile, "\n%s%s",
285 (xspaces + (sizeof xspaces - 1 - indent * 2)));
287 fputs ("] ", outfile);
293 fprintf (outfile, " ");
294 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
295 fprintf (outfile, " [");
296 fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, XWINT (in_rtx, i));
297 fprintf (outfile, "]");
302 register int value = XINT (in_rtx, i);
305 if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
307 fputc (' ', outfile);
308 DEBUG_PRINT_REG (in_rtx, 0, outfile);
310 else if (GET_CODE (in_rtx) == REG && value <= LAST_VIRTUAL_REGISTER)
312 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
313 fprintf (outfile, " %d virtual-incoming-args", value);
314 else if (value == VIRTUAL_STACK_VARS_REGNUM)
315 fprintf (outfile, " %d virtual-stack-vars", value);
316 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
317 fprintf (outfile, " %d virtual-stack-dynamic", value);
318 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
319 fprintf (outfile, " %d virtual-outgoing-args", value);
320 else if (value == VIRTUAL_CFA_REGNUM)
321 fprintf (outfile, " %d virtual-cfa", value);
323 fprintf (outfile, " %d virtual-reg-%d", value,
324 value-FIRST_VIRTUAL_REGISTER);
326 else if (flag_dump_unnumbered
327 && (is_insn || GET_CODE (in_rtx) == NOTE))
328 fputc ('#', outfile);
330 fprintf (outfile, " %d", value);
332 if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
333 && XINT (in_rtx, i) >= 0
334 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
335 fprintf (outfile, " {%s}", name);
340 /* Print NOTE_INSN names rather than integer codes. */
343 if (XINT (in_rtx, i) >= NOTE_INSN_BIAS
344 && XINT (in_rtx, i) < NOTE_INSN_MAX)
345 fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
347 fprintf (outfile, " %d", XINT (in_rtx, i));
352 if (XEXP (in_rtx, i) != NULL)
354 rtx sub = XEXP (in_rtx, i);
355 enum rtx_code subc = GET_CODE (sub);
357 if (GET_CODE (in_rtx) == LABEL_REF)
360 && NOTE_LINE_NUMBER (sub) == NOTE_INSN_DELETED_LABEL)
362 if (flag_dump_unnumbered)
363 fprintf (outfile, " [# deleted]");
365 fprintf (outfile, " [%d deleted]", INSN_UID (sub));
370 if (subc != CODE_LABEL)
374 if (flag_dump_unnumbered)
375 fputs (" #", outfile);
377 fprintf (outfile, " %d", INSN_UID (sub));
380 fputs (" 0", outfile);
385 if (XBITMAP (in_rtx, i) == NULL)
386 fputs (" {null}", outfile);
388 bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
394 fprintf (outfile, HOST_PTR_PRINTF, (char *) XTREE (in_rtx, i));
398 fputs (" Unknown", outfile);
404 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
409 switch (GET_CODE (in_rtx))
412 fputc (' ', outfile);
413 fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, MEM_ALIAS_SET (in_rtx));
416 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
418 if (FLOAT_MODE_P (GET_MODE (in_rtx)))
421 REAL_VALUE_FROM_CONST_DOUBLE (val, in_rtx);
422 fprintf (outfile, " [%.16g]", val);
428 fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
429 if (LABEL_ALTERNATE_NAME (in_rtx))
430 fprintf (outfile, " [alternate name: %s]",
431 LABEL_ALTERNATE_NAME (in_rtx));
434 case CALL_PLACEHOLDER:
435 if (debug_call_placeholder_verbose)
437 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile);
438 for (tem = XEXP (in_rtx, 0); tem != 0; tem = NEXT_INSN (tem))
440 fputs ("\n ", outfile);
441 print_inline_rtx (outfile, tem, 4);
444 tem = XEXP (in_rtx, 1);
446 fputs ("\n ])\n (const_string \"tail_call\") (sequence [", outfile);
447 for (; tem != 0; tem = NEXT_INSN (tem))
449 fputs ("\n ", outfile);
450 print_inline_rtx (outfile, tem, 4);
453 tem = XEXP (in_rtx, 2);
455 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [", outfile);
456 for (; tem != 0; tem = NEXT_INSN (tem))
458 fputs ("\n ", outfile);
459 print_inline_rtx (outfile, tem, 4);
462 fputs ("\n ])\n ])", outfile);
466 for (tem = XEXP (in_rtx, 0); tem != 0; tem = NEXT_INSN (tem))
467 if (GET_CODE (tem) == CALL_INSN)
469 fprintf (outfile, " ");
480 && (is_insn || GET_CODE (in_rtx) == NOTE
481 || GET_CODE (in_rtx) == CODE_LABEL || GET_CODE (in_rtx) == BARRIER))
485 fputc (')', outfile);
490 /* Print an rtx on the current line of FILE. Initially indent IND
494 print_inline_rtx (outf, x, ind)
499 int oldsaw = sawclose;
500 int oldindent = indent;
510 /* Call this function from the debugger to see what X looks like. */
518 fprintf (stderr, "\n");
521 /* Count of rtx's to print with debug_rtx_list.
522 This global exists because gdb user defined commands have no arguments. */
524 int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
526 /* Call this function to print list from X on.
528 N is a count of the rtx's to print. Positive values print from the specified
529 rtx on. Negative values print a window around the rtx.
530 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
533 debug_rtx_list (x, n)
540 count = n == 0 ? 1 : n < 0 ? -n : n;
542 /* If we are printing a window, back up to the start. */
545 for (i = count / 2; i > 0; i--)
547 if (PREV_INSN (x) == 0)
552 for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
556 /* Call this function to print an rtx list from START to END inclusive. */
559 debug_rtx_range (start, end)
565 if (!start || start == end)
567 start = NEXT_INSN (start);
571 /* Call this function to search an rtx list to find one with insn uid UID,
572 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
573 The found insn is returned to enable further debugging analysis. */
576 debug_rtx_find (x, uid)
580 while (x != 0 && INSN_UID (x) != uid)
584 debug_rtx_list (x, debug_rtx_count);
589 fprintf (stderr, "insn uid %d not found\n", uid);
594 /* External entry point for printing a chain of insns
595 starting with RTX_FIRST onto file OUTF.
596 A blank line separates insns.
598 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
601 print_rtl (outf, rtx_first)
605 register rtx tmp_rtx;
612 fputs (print_rtx_head, outf);
613 fputs ("(nil)\n", outf);
616 switch (GET_CODE (rtx_first))
624 for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
625 if (! flag_dump_unnumbered
626 || GET_CODE (tmp_rtx) != NOTE || NOTE_LINE_NUMBER (tmp_rtx) < 0)
628 fputs (print_rtx_head, outfile);
630 fprintf (outfile, "\n");
635 fputs (print_rtx_head, outfile);
636 print_rtx (rtx_first);
640 /* Like print_rtx, except specify a file. */
641 /* Return nonzero if we actually printed anything. */
644 print_rtl_single (outf, x)
650 if (! flag_dump_unnumbered
651 || GET_CODE (x) != NOTE || NOTE_LINE_NUMBER (x) < 0)
653 fputs (print_rtx_head, outfile);