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 /* 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 const char *format_ptr
;
80 fprintf (outfile
, "\n%s",
81 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
87 fputs ("(nil)", outfile
);
92 is_insn
= (GET_RTX_CLASS (GET_CODE (in_rtx
)) == 'i');
94 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
95 in separate nodes and therefore have to handle them special here. */
97 (is_insn
|| GET_CODE (in_rtx
) == NOTE
|| GET_CODE (in_rtx
) == CODE_LABEL
98 || GET_CODE (in_rtx
) == BARRIER
))
105 /* print name of expression code */
106 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
108 if (in_rtx
->in_struct
)
109 fputs ("/s", outfile
);
112 fputs ("/v", outfile
);
114 if (in_rtx
->unchanging
)
115 fputs ("/u", outfile
);
117 if (in_rtx
->integrated
)
118 fputs ("/i", outfile
);
120 if (in_rtx
->frame_related
)
121 fputs ("/f", outfile
);
124 fputs ("/j", outfile
);
127 fputs ("/c", outfile
);
129 if (GET_MODE (in_rtx
) != VOIDmode
)
131 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
132 if (GET_CODE (in_rtx
) == EXPR_LIST
|| GET_CODE (in_rtx
) == INSN_LIST
)
133 fprintf (outfile
, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
135 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
139 /* Get the format string and skip the first elements if we have handled
141 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
143 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
144 switch (*format_ptr
++)
148 if (XSTR (in_rtx
, i
) == 0)
149 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
153 fprintf (outfile
, " (\\\"%s\\\")", XSTR (in_rtx
, i
));
155 fprintf (outfile
, " (\"%s\")", XSTR (in_rtx
, i
));
160 /* 0 indicates a field for internal use that should not be printed.
161 An exception is the third field of a NOTE, where it indicates
162 that the field has several different valid contents. */
164 if (i
== 3 && GET_CODE (in_rtx
) == NOTE
)
166 switch (NOTE_LINE_NUMBER (in_rtx
))
168 case NOTE_INSN_EH_REGION_BEG
:
169 case NOTE_INSN_EH_REGION_END
:
170 if (flag_dump_unnumbered
)
171 fprintf (outfile
, " #");
173 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
177 case NOTE_INSN_BLOCK_BEG
:
178 case NOTE_INSN_BLOCK_END
:
179 fprintf (outfile
, " ");
180 if (flag_dump_unnumbered
)
181 fprintf (outfile
, "#");
183 fprintf (outfile
, HOST_PTR_PRINTF
,
184 (char *) NOTE_BLOCK (in_rtx
));
188 case NOTE_INSN_RANGE_BEG
:
189 case NOTE_INSN_RANGE_END
:
193 fprintf (outfile
, " ");
194 print_rtx (NOTE_RANGE_INFO (in_rtx
));
198 case NOTE_INSN_BASIC_BLOCK
:
200 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
202 fprintf (outfile
, " [bb %d]", bb
->index
);
206 case NOTE_INSN_EXPECTED_VALUE
:
209 fprintf (outfile
, " ");
210 print_rtx (NOTE_EXPECTED_VALUE (in_rtx
));
214 case NOTE_INSN_DELETED_LABEL
:
215 if (NOTE_SOURCE_FILE (in_rtx
))
216 fprintf (outfile
, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx
));
218 fprintf (outfile
, " \"\"");
223 const char * const str
= X0STR (in_rtx
, i
);
225 if (NOTE_LINE_NUMBER (in_rtx
) < 0)
228 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
232 fprintf (outfile
, " (\\\"%s\\\")", str
);
234 fprintf (outfile
, " (\"%s\")", str
);
246 fprintf (outfile
, " ");
247 print_rtx (XEXP (in_rtx
, i
));
256 fprintf (outfile
, "\n%s",
257 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
260 fputs ("[ ", outfile
);
261 if (NULL
!= XVEC (in_rtx
, i
))
264 if (XVECLEN (in_rtx
, i
))
267 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
268 print_rtx (XVECEXP (in_rtx
, i
, j
));
273 fprintf (outfile
, "\n%s",
274 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
276 fputs ("] ", outfile
);
282 fprintf (outfile
, " ");
283 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
284 fprintf (outfile
, " [");
285 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
286 fprintf (outfile
, "]");
291 register int value
= XINT (in_rtx
, i
);
294 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
296 fputc (' ', outfile
);
297 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
299 else if (GET_CODE (in_rtx
) == REG
&& value
<= LAST_VIRTUAL_REGISTER
)
301 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
302 fprintf (outfile
, " %d virtual-incoming-args", value
);
303 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
304 fprintf (outfile
, " %d virtual-stack-vars", value
);
305 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
306 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
307 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
308 fprintf (outfile
, " %d virtual-outgoing-args", value
);
309 else if (value
== VIRTUAL_CFA_REGNUM
)
310 fprintf (outfile
, " %d virtual-cfa", value
);
312 fprintf (outfile
, " %d virtual-reg-%d", value
,
313 value
-FIRST_VIRTUAL_REGISTER
);
315 else if (flag_dump_unnumbered
316 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
317 fputc ('#', outfile
);
319 fprintf (outfile
, " %d", value
);
321 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
322 && XINT (in_rtx
, i
) >= 0
323 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
324 fprintf (outfile
, " {%s}", name
);
329 /* Print NOTE_INSN names rather than integer codes. */
332 if (XINT (in_rtx
, i
) >= NOTE_INSN_BIAS
333 && XINT (in_rtx
, i
) < NOTE_INSN_MAX
)
334 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
336 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
341 if (XEXP (in_rtx
, i
) != NULL
)
343 rtx sub
= XEXP (in_rtx
, i
);
344 enum rtx_code subc
= GET_CODE (sub
);
346 if (GET_CODE (in_rtx
) == LABEL_REF
)
349 && NOTE_LINE_NUMBER (sub
) == NOTE_INSN_DELETED_LABEL
)
351 if (flag_dump_unnumbered
)
352 fprintf (outfile
, " [# deleted]");
354 fprintf (outfile
, " [%d deleted]", INSN_UID (sub
));
359 if (subc
!= CODE_LABEL
)
363 if (flag_dump_unnumbered
)
364 fputs (" #", outfile
);
366 fprintf (outfile
, " %d", INSN_UID (sub
));
369 fputs (" 0", outfile
);
374 if (XBITMAP (in_rtx
, i
) == NULL
)
375 fputs (" {null}", outfile
);
377 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
383 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
387 fputs (" Unknown", outfile
);
393 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
398 switch (GET_CODE (in_rtx
))
401 fprintf (outfile
, " %d", MEM_ALIAS_SET (in_rtx
));
404 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
406 if (FLOAT_MODE_P (GET_MODE (in_rtx
)))
409 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
410 fprintf (outfile
, " [%.16g]", val
);
416 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
417 if (LABEL_ALTERNATE_NAME (in_rtx
))
418 fprintf (outfile
, " [alternate name: %s]",
419 LABEL_ALTERNATE_NAME (in_rtx
));
422 case CALL_PLACEHOLDER
:
423 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
424 if (GET_CODE (tem
) == CALL_INSN
)
426 fprintf (outfile
, " ");
437 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
438 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
442 fputc (')', outfile
);
447 /* Print an rtx on the current line of FILE. Initially indent IND
451 print_inline_rtx (outf
, x
, ind
)
456 int oldsaw
= sawclose
;
457 int oldindent
= indent
;
467 /* Call this function from the debugger to see what X looks like. */
475 fprintf (stderr
, "\n");
478 /* Count of rtx's to print with debug_rtx_list.
479 This global exists because gdb user defined commands have no arguments. */
481 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
483 /* Call this function to print list from X on.
485 N is a count of the rtx's to print. Positive values print from the specified
486 rtx on. Negative values print a window around the rtx.
487 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
490 debug_rtx_list (x
, n
)
497 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
499 /* If we are printing a window, back up to the start. */
502 for (i
= count
/ 2; i
> 0; i
--)
504 if (PREV_INSN (x
) == 0)
509 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
513 /* Call this function to print an rtx list from START to END inclusive. */
516 debug_rtx_range (start
, end
)
522 if (!start
|| start
== end
)
524 start
= NEXT_INSN (start
);
528 /* Call this function to search an rtx list to find one with insn uid UID,
529 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
530 The found insn is returned to enable further debugging analysis. */
533 debug_rtx_find (x
, uid
)
537 while (x
!= 0 && INSN_UID (x
) != uid
)
541 debug_rtx_list (x
, debug_rtx_count
);
546 fprintf (stderr
, "insn uid %d not found\n", uid
);
551 /* External entry point for printing a chain of insns
552 starting with RTX_FIRST onto file OUTF.
553 A blank line separates insns.
555 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
558 print_rtl (outf
, rtx_first
)
562 register rtx tmp_rtx
;
568 fputs ("(nil)\n", outf
);
570 switch (GET_CODE (rtx_first
))
578 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
579 if (! flag_dump_unnumbered
580 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
583 fprintf (outfile
, "\n");
588 print_rtx (rtx_first
);
592 /* Like print_rtx, except specify a file. */
593 /* Return nonzero if we actually printed anything. */
596 print_rtl_single (outf
, x
)
602 if (! flag_dump_unnumbered
603 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)