1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999
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 "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 reg_names
[] = DEBUG_REGISTER_NAMES
;
44 static const char * const reg_names
[] = REGISTER_NAMES
;
49 static const char xspaces
[] = " ";
51 static int sawclose
= 0;
55 static void print_rtx
PROTO ((rtx
));
57 /* Nonzero means suppress output of instruction numbers and line number
58 notes in debugging dumps.
59 This must be defined here so that programs like gencodes can be linked. */
60 int flag_dump_unnumbered
= 0;
62 /* Nonzero if we are dumping graphical description. */
65 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
73 register const char *format_ptr
;
78 fprintf (outfile
, "\n%s",
79 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
85 fputs ("(nil)", outfile
);
90 is_insn
= (GET_RTX_CLASS (GET_CODE (in_rtx
)) == 'i');
92 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
93 in separate nodes and therefore have to handle them special here. */
95 (is_insn
|| GET_CODE (in_rtx
) == NOTE
|| GET_CODE (in_rtx
) == CODE_LABEL
96 || GET_CODE (in_rtx
) == BARRIER
))
103 /* print name of expression code */
104 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
106 if (in_rtx
->in_struct
)
107 fputs ("/s", outfile
);
110 fputs ("/v", outfile
);
112 if (in_rtx
->unchanging
)
113 fputs ("/u", outfile
);
115 if (in_rtx
->integrated
)
116 fputs ("/i", outfile
);
118 if (in_rtx
->frame_related
)
119 fputs ("/f", outfile
);
122 fputs ("/j", outfile
);
125 fputs ("/c", outfile
);
127 if (GET_MODE (in_rtx
) != VOIDmode
)
129 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
130 if (GET_CODE (in_rtx
) == EXPR_LIST
|| GET_CODE (in_rtx
) == INSN_LIST
)
131 fprintf (outfile
, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
133 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
137 /* Get the format string and skip the first elements if we have handled
139 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
141 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
142 switch (*format_ptr
++)
146 if (XSTR (in_rtx
, i
) == 0)
147 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
149 fprintf (outfile
, dump_for_graph
? " (\\\"%s\\\")" : " (\"%s\")",
154 /* 0 indicates a field for internal use that should not be printed.
155 An exception is the third field of a NOTE, where it indicates
156 that the field has several different valid contents. */
158 if (i
== 3 && GET_CODE (in_rtx
) == NOTE
)
160 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_EH_REGION_BEG
161 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_EH_REGION_END
)
163 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
166 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BLOCK_BEG
167 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BLOCK_END
)
169 fprintf (outfile
, " ");
170 fprintf (outfile
, HOST_PTR_PRINTF
,
171 (char *) NOTE_BLOCK (in_rtx
));
174 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_RANGE_START
175 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_RANGE_END
176 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_LIVE
)
180 fprintf (outfile
, " ");
181 print_rtx (NOTE_RANGE_INFO (in_rtx
));
184 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BASIC_BLOCK
)
186 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
187 fprintf (outfile
, " [bb %d]", bb
->index
);
191 char *str
= X0STR (in_rtx
, i
);
193 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
196 dump_for_graph
? " (\\\"%s\\\")" : " (\"%s\")",
206 fprintf (outfile
, " ");
207 print_rtx (XEXP (in_rtx
, i
));
216 fprintf (outfile
, "\n%s",
217 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
220 fputs ("[ ", outfile
);
221 if (NULL
!= XVEC (in_rtx
, i
))
224 if (XVECLEN (in_rtx
, i
))
227 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
228 print_rtx (XVECEXP (in_rtx
, i
, j
));
233 fprintf (outfile
, "\n%s",
234 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
236 fputs ("] ", outfile
);
242 fprintf (outfile
, " ");
243 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
244 fprintf (outfile
, " [");
245 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
246 fprintf (outfile
, "]");
251 register int value
= XINT (in_rtx
, i
);
254 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
256 fputc (' ', outfile
);
257 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
259 else if (GET_CODE (in_rtx
) == REG
&& value
<= LAST_VIRTUAL_REGISTER
)
261 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
262 fprintf (outfile
, " %d virtual-incoming-args", value
);
263 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
264 fprintf (outfile
, " %d virtual-stack-vars", value
);
265 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
266 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
267 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
268 fprintf (outfile
, " %d virtual-outgoing-args", value
);
269 else if (value
== VIRTUAL_CFA_REGNUM
)
270 fprintf (outfile
, " %d virtual-cfa", value
);
272 fprintf (outfile
, " %d virtual-reg-%d", value
,
273 value
-FIRST_VIRTUAL_REGISTER
);
275 else if (flag_dump_unnumbered
276 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
277 fputc ('#', outfile
);
279 fprintf (outfile
, " %d", value
);
281 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
282 && XINT (in_rtx
, i
) >= 0
283 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
284 fprintf (outfile
, " {%s}", name
);
289 /* Print NOTE_INSN names rather than integer codes. */
292 if (XINT (in_rtx
, i
) <= 0)
293 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
295 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
300 if (XEXP (in_rtx
, i
) != NULL
)
302 rtx sub
= XEXP (in_rtx
, i
);
303 enum rtx_code subc
= GET_CODE (sub
);
305 if (GET_CODE (in_rtx
) == LABEL_REF
306 && subc
!= CODE_LABEL
)
309 if (flag_dump_unnumbered
)
310 fputc ('#', outfile
);
312 fprintf (outfile
, " %d", INSN_UID (sub
));
315 fputs (" 0", outfile
);
320 if (XBITMAP (in_rtx
, i
) == NULL
)
321 fputs (" {null}", outfile
);
323 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
329 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
333 fputs (" Unknown", outfile
);
339 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
344 if (GET_CODE (in_rtx
) == MEM
)
345 fprintf (outfile
, " %d", MEM_ALIAS_SET (in_rtx
));
347 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && LONG_DOUBLE_TYPE_SIZE == 64
348 if (GET_CODE (in_rtx
) == CONST_DOUBLE
&& FLOAT_MODE_P (GET_MODE (in_rtx
)))
351 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
352 fprintf (outfile
, " [%.16g]", val
);
356 if (GET_CODE (in_rtx
) == CODE_LABEL
)
357 fprintf (outfile
, " [num uses: %d]", LABEL_NUSES (in_rtx
));
360 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
361 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
365 fputc (')', outfile
);
370 /* Print an rtx on the current line of FILE. Initially indent IND
374 print_inline_rtx (outf
, x
, ind
)
379 int oldsaw
= sawclose
;
380 int oldindent
= indent
;
390 /* Call this function from the debugger to see what X looks like. */
398 fprintf (stderr
, "\n");
401 /* Count of rtx's to print with debug_rtx_list.
402 This global exists because gdb user defined commands have no arguments. */
404 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
406 /* Call this function to print list from X on.
408 N is a count of the rtx's to print. Positive values print from the specified
409 rtx on. Negative values print a window around the rtx.
410 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
413 debug_rtx_list (x
, n
)
420 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
422 /* If we are printing a window, back up to the start. */
425 for (i
= count
/ 2; i
> 0; i
--)
427 if (PREV_INSN (x
) == 0)
432 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
436 /* Call this function to search an rtx list to find one with insn uid UID,
437 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
438 The found insn is returned to enable further debugging analysis. */
441 debug_rtx_find (x
, uid
)
445 while (x
!= 0 && INSN_UID (x
) != uid
)
449 debug_rtx_list (x
, debug_rtx_count
);
454 fprintf (stderr
, "insn uid %d not found\n", uid
);
459 /* External entry point for printing a chain of insns
460 starting with RTX_FIRST onto file OUTF.
461 A blank line separates insns.
463 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
466 print_rtl (outf
, rtx_first
)
470 register rtx tmp_rtx
;
476 fputs ("(nil)\n", outf
);
478 switch (GET_CODE (rtx_first
))
486 for (tmp_rtx
= rtx_first
; NULL
!= tmp_rtx
; tmp_rtx
= NEXT_INSN (tmp_rtx
))
488 if (! flag_dump_unnumbered
489 || GET_CODE (tmp_rtx
) != NOTE
490 || NOTE_LINE_NUMBER (tmp_rtx
) < 0)
493 fprintf (outfile
, "\n");
499 print_rtx (rtx_first
);
503 /* Like print_rtx, except specify a file. */
504 /* Return nonzero if we actually printed anything. */
507 print_rtl_single (outf
, x
)
513 if (! flag_dump_unnumbered
514 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)