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 GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
27 /* We don't want the tree code checking code for the access to the
28 DECL_NAME to be included in the gen* programs. */
29 #undef ENABLE_TREE_CHECKING
33 #include "hard-reg-set.h"
34 #include "basic-block.h"
36 /* How to print out a register name.
37 We don't use PRINT_REG because some definitions of PRINT_REG
39 #ifndef DEBUG_PRINT_REG
40 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
41 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
44 /* Array containing all of the register names */
46 #ifdef DEBUG_REGISTER_NAMES
47 static const char * const debug_reg_names
[] = DEBUG_REGISTER_NAMES
;
48 #define reg_names debug_reg_names
50 const char * reg_names
[] = REGISTER_NAMES
;
55 static int sawclose
= 0;
59 static void print_rtx
PARAMS ((rtx
));
61 /* String printed at beginning of each RTL when it is dumped.
62 This string is set to ASM_COMMENT_START when the RTL is dumped in
63 the assembly output file. */
64 const char *print_rtx_head
= "";
66 /* Nonzero means suppress output of instruction numbers and line number
67 notes in debugging dumps.
68 This must be defined here so that programs like gencodes can be linked. */
69 int flag_dump_unnumbered
= 0;
71 /* Nonzero means use simplified format without flags, modes, etc. */
74 /* Nonzero if we are dumping graphical description. */
77 /* Nonzero to dump all call_placeholder alternatives. */
78 static int debug_call_placeholder_verbose
;
80 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
88 const char *format_ptr
;
97 fprintf (outfile
, "\n%s%*s",
98 print_rtx_head
, indent
* 2, "");
104 fputs ("(nil)", outfile
);
109 is_insn
= (INSN_P (in_rtx
));
111 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
112 in separate nodes and therefore have to handle them special here. */
113 if (dump_for_graph
&&
114 (is_insn
|| GET_CODE (in_rtx
) == NOTE
|| GET_CODE (in_rtx
) == CODE_LABEL
115 || GET_CODE (in_rtx
) == BARRIER
))
122 /* print name of expression code */
123 if (flag_simple
&& GET_CODE (in_rtx
) == CONST_INT
)
124 fputc ('(', outfile
);
126 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
130 if (in_rtx
->in_struct
)
131 fputs ("/s", outfile
);
134 fputs ("/v", outfile
);
136 if (in_rtx
->unchanging
)
137 fputs ("/u", outfile
);
139 if (in_rtx
->integrated
)
140 fputs ("/i", outfile
);
142 if (in_rtx
->frame_related
)
143 fputs ("/f", outfile
);
146 fputs ("/j", outfile
);
149 fputs ("/c", outfile
);
151 if (GET_MODE (in_rtx
) != VOIDmode
)
153 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
154 if (GET_CODE (in_rtx
) == EXPR_LIST
155 || GET_CODE (in_rtx
) == INSN_LIST
)
156 fprintf (outfile
, ":%s",
157 GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
159 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
164 /* Get the format string and skip the first elements if we have handled
166 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
168 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
169 switch (*format_ptr
++)
174 str
= XTMPL (in_rtx
, i
);
179 str
= XSTR (in_rtx
, i
);
183 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
187 fprintf (outfile
, " (\\\"%s\\\")", str
);
189 fprintf (outfile
, " (\"%s\")", str
);
194 /* 0 indicates a field for internal use that should not be printed.
195 An exception is the third field of a NOTE, where it indicates
196 that the field has several different valid contents. */
198 if (i
== 1 && GET_CODE (in_rtx
) == REG
)
200 if (REGNO (in_rtx
) != ORIGINAL_REGNO (in_rtx
))
201 fprintf (outfile
, " [%d]", ORIGINAL_REGNO (in_rtx
));
204 if (i
== 3 && GET_CODE (in_rtx
) == NOTE
)
206 switch (NOTE_LINE_NUMBER (in_rtx
))
208 case NOTE_INSN_EH_REGION_BEG
:
209 case NOTE_INSN_EH_REGION_END
:
210 if (flag_dump_unnumbered
)
211 fprintf (outfile
, " #");
213 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
217 case NOTE_INSN_BLOCK_BEG
:
218 case NOTE_INSN_BLOCK_END
:
219 fprintf (outfile
, " ");
220 if (flag_dump_unnumbered
)
221 fprintf (outfile
, "#");
223 fprintf (outfile
, HOST_PTR_PRINTF
,
224 (char *) NOTE_BLOCK (in_rtx
));
228 case NOTE_INSN_RANGE_BEG
:
229 case NOTE_INSN_RANGE_END
:
233 fprintf (outfile
, " ");
234 print_rtx (NOTE_RANGE_INFO (in_rtx
));
238 case NOTE_INSN_BASIC_BLOCK
:
240 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
242 fprintf (outfile
, " [bb %d]", bb
->index
);
246 case NOTE_INSN_EXPECTED_VALUE
:
249 fprintf (outfile
, " ");
250 print_rtx (NOTE_EXPECTED_VALUE (in_rtx
));
254 case NOTE_INSN_DELETED_LABEL
:
255 if (NOTE_SOURCE_FILE (in_rtx
))
256 fprintf (outfile
, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx
));
258 fprintf (outfile
, " \"\"");
263 const char * const str
= X0STR (in_rtx
, i
);
265 if (NOTE_LINE_NUMBER (in_rtx
) < 0)
268 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
272 fprintf (outfile
, " (\\\"%s\\\")", str
);
274 fprintf (outfile
, " (\"%s\")", str
);
286 fprintf (outfile
, " ");
287 print_rtx (XEXP (in_rtx
, i
));
296 fprintf (outfile
, "\n%s%*s",
297 print_rtx_head
, indent
* 2, "");
300 fputs ("[ ", outfile
);
301 if (NULL
!= XVEC (in_rtx
, i
))
304 if (XVECLEN (in_rtx
, i
))
307 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
308 print_rtx (XVECEXP (in_rtx
, i
, j
));
313 fprintf (outfile
, "\n%s%*s",
314 print_rtx_head
, indent
* 2, "");
316 fputs ("] ", outfile
);
323 fprintf (outfile
, " ");
324 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
327 fprintf (outfile
, " [");
328 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
329 fprintf (outfile
, "]");
334 if (i
== 5 && GET_CODE (in_rtx
) == NOTE
)
336 /* This field is only used for NOTE_INSN_DELETED_LABEL, and
337 other times often contains garbage from INSN->NOTE death. */
338 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_DELETED_LABEL
)
339 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
343 int value
= XINT (in_rtx
, i
);
346 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
348 fputc (' ', outfile
);
349 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
351 else if (GET_CODE (in_rtx
) == REG
352 && value
<= LAST_VIRTUAL_REGISTER
)
354 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
355 fprintf (outfile
, " %d virtual-incoming-args", value
);
356 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
357 fprintf (outfile
, " %d virtual-stack-vars", value
);
358 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
359 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
360 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
361 fprintf (outfile
, " %d virtual-outgoing-args", value
);
362 else if (value
== VIRTUAL_CFA_REGNUM
)
363 fprintf (outfile
, " %d virtual-cfa", value
);
365 fprintf (outfile
, " %d virtual-reg-%d", value
,
366 value
-FIRST_VIRTUAL_REGISTER
);
368 else if (flag_dump_unnumbered
369 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
370 fputc ('#', outfile
);
372 fprintf (outfile
, " %d", value
);
374 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
375 && XINT (in_rtx
, i
) >= 0
376 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
377 fprintf (outfile
, " {%s}", name
);
382 /* Print NOTE_INSN names rather than integer codes. */
385 if (XINT (in_rtx
, i
) >= (int) NOTE_INSN_BIAS
386 && XINT (in_rtx
, i
) < (int) NOTE_INSN_MAX
)
387 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
389 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
394 if (XEXP (in_rtx
, i
) != NULL
)
396 rtx sub
= XEXP (in_rtx
, i
);
397 enum rtx_code subc
= GET_CODE (sub
);
399 if (GET_CODE (in_rtx
) == LABEL_REF
)
402 && NOTE_LINE_NUMBER (sub
) == NOTE_INSN_DELETED_LABEL
)
404 if (flag_dump_unnumbered
)
405 fprintf (outfile
, " [# deleted]");
407 fprintf (outfile
, " [%d deleted]", INSN_UID (sub
));
412 if (subc
!= CODE_LABEL
)
416 if (flag_dump_unnumbered
)
417 fputs (" #", outfile
);
419 fprintf (outfile
, " %d", INSN_UID (sub
));
422 fputs (" 0", outfile
);
427 if (XBITMAP (in_rtx
, i
) == NULL
)
428 fputs (" {null}", outfile
);
430 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
436 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
440 fputs (" Unknown", outfile
);
446 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
451 switch (GET_CODE (in_rtx
))
454 fputs (" [", outfile
);
455 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, MEM_ALIAS_SET (in_rtx
));
456 if (MEM_DECL (in_rtx
))
457 fprintf (outfile
, " %s",
458 DECL_NAME (MEM_DECL (in_rtx
))
459 ? IDENTIFIER_POINTER (DECL_NAME (MEM_DECL (in_rtx
)))
460 : TREE_CODE (MEM_DECL (in_rtx
)) == RESULT_DECL
? "<result>"
463 if (MEM_OFFSET (in_rtx
))
465 fputc ('+', outfile
);
466 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
467 INTVAL (MEM_OFFSET (in_rtx
)));
470 if (MEM_SIZE (in_rtx
))
472 fputs (" S", outfile
);
473 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
474 INTVAL (MEM_SIZE (in_rtx
)));
477 if (MEM_ALIGN (in_rtx
) != 1)
478 fprintf (outfile
, " A%u", MEM_ALIGN (in_rtx
));
480 fputc (']', outfile
);
483 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
485 if (FLOAT_MODE_P (GET_MODE (in_rtx
)))
488 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
489 fprintf (outfile
, " [%.16g]", val
);
495 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
496 if (LABEL_ALTERNATE_NAME (in_rtx
))
497 fprintf (outfile
, " [alternate name: %s]",
498 LABEL_ALTERNATE_NAME (in_rtx
));
501 case CALL_PLACEHOLDER
:
502 if (debug_call_placeholder_verbose
)
504 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile
);
505 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
507 fputs ("\n ", outfile
);
508 print_inline_rtx (outfile
, tem
, 4);
511 tem
= XEXP (in_rtx
, 1);
513 fputs ("\n ])\n (const_string \"tail_call\") (sequence [", outfile
);
514 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
516 fputs ("\n ", outfile
);
517 print_inline_rtx (outfile
, tem
, 4);
520 tem
= XEXP (in_rtx
, 2);
522 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [", outfile
);
523 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
525 fputs ("\n ", outfile
);
526 print_inline_rtx (outfile
, tem
, 4);
529 fputs ("\n ])\n ])", outfile
);
533 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
534 if (GET_CODE (tem
) == CALL_INSN
)
536 fprintf (outfile
, " ");
547 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
548 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
552 fputc (')', outfile
);
557 /* Print an rtx on the current line of FILE. Initially indent IND
561 print_inline_rtx (outf
, x
, ind
)
566 int oldsaw
= sawclose
;
567 int oldindent
= indent
;
577 /* Call this function from the debugger to see what X looks like. */
585 fprintf (stderr
, "\n");
588 /* Count of rtx's to print with debug_rtx_list.
589 This global exists because gdb user defined commands have no arguments. */
591 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
593 /* Call this function to print list from X on.
595 N is a count of the rtx's to print. Positive values print from the specified
596 rtx on. Negative values print a window around the rtx.
597 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
600 debug_rtx_list (x
, n
)
607 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
609 /* If we are printing a window, back up to the start. */
612 for (i
= count
/ 2; i
> 0; i
--)
614 if (PREV_INSN (x
) == 0)
619 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
623 /* Call this function to print an rtx list from START to END inclusive. */
626 debug_rtx_range (start
, end
)
632 if (!start
|| start
== end
)
634 start
= NEXT_INSN (start
);
638 /* Call this function to search an rtx list to find one with insn uid UID,
639 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
640 The found insn is returned to enable further debugging analysis. */
643 debug_rtx_find (x
, uid
)
647 while (x
!= 0 && INSN_UID (x
) != uid
)
651 debug_rtx_list (x
, debug_rtx_count
);
656 fprintf (stderr
, "insn uid %d not found\n", uid
);
661 /* External entry point for printing a chain of insns
662 starting with RTX_FIRST onto file OUTF.
663 A blank line separates insns.
665 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
668 print_rtl (outf
, rtx_first
)
679 fputs (print_rtx_head
, outf
);
680 fputs ("(nil)\n", outf
);
683 switch (GET_CODE (rtx_first
))
691 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
692 if (! flag_dump_unnumbered
693 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
695 fputs (print_rtx_head
, outfile
);
697 fprintf (outfile
, "\n");
702 fputs (print_rtx_head
, outfile
);
703 print_rtx (rtx_first
);
707 /* Like print_rtx, except specify a file. */
708 /* Return nonzero if we actually printed anything. */
711 print_rtl_single (outf
, x
)
717 if (! flag_dump_unnumbered
718 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)
720 fputs (print_rtx_head
, outfile
);
729 /* Like print_rtl except without all the detail; for example,
730 if RTX is a CONST_INT then print in decimal format. */
733 print_simple_rtl (outf
, x
)