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 "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
PARAMS ((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
;
79 fprintf (outfile
, "\n%s",
80 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
86 fputs ("(nil)", outfile
);
91 is_insn
= (GET_RTX_CLASS (GET_CODE (in_rtx
)) == 'i');
93 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
94 in separate nodes and therefore have to handle them special here. */
96 (is_insn
|| GET_CODE (in_rtx
) == NOTE
|| GET_CODE (in_rtx
) == CODE_LABEL
97 || GET_CODE (in_rtx
) == BARRIER
))
104 /* print name of expression code */
105 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
107 if (in_rtx
->in_struct
)
108 fputs ("/s", outfile
);
111 fputs ("/v", outfile
);
113 if (in_rtx
->unchanging
)
114 fputs ("/u", outfile
);
116 if (in_rtx
->integrated
)
117 fputs ("/i", outfile
);
119 if (in_rtx
->frame_related
)
120 fputs ("/f", outfile
);
123 fputs ("/j", outfile
);
126 fputs ("/c", outfile
);
128 if (GET_MODE (in_rtx
) != VOIDmode
)
130 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
131 if (GET_CODE (in_rtx
) == EXPR_LIST
|| GET_CODE (in_rtx
) == INSN_LIST
)
132 fprintf (outfile
, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
134 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
138 /* Get the format string and skip the first elements if we have handled
140 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
142 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
143 switch (*format_ptr
++)
147 if (XSTR (in_rtx
, i
) == 0)
148 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
152 fprintf (outfile
, " (\\\"%s\\\")", XSTR (in_rtx
, i
));
154 fprintf (outfile
, " (\"%s\")", XSTR (in_rtx
, i
));
159 /* 0 indicates a field for internal use that should not be printed.
160 An exception is the third field of a NOTE, where it indicates
161 that the field has several different valid contents. */
163 if (i
== 3 && GET_CODE (in_rtx
) == NOTE
)
165 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_EH_REGION_BEG
166 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_EH_REGION_END
)
168 if (flag_dump_unnumbered
)
169 fprintf (outfile
, " #");
171 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
174 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BLOCK_BEG
175 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BLOCK_END
)
177 fprintf (outfile
, " ");
178 if (flag_dump_unnumbered
)
179 fprintf (outfile
, "#");
181 fprintf (outfile
, HOST_PTR_PRINTF
,
182 (char *) NOTE_BLOCK (in_rtx
));
185 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_RANGE_START
186 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_RANGE_END
187 || NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_LIVE
)
191 fprintf (outfile
, " ");
192 print_rtx (NOTE_RANGE_INFO (in_rtx
));
195 else if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_BASIC_BLOCK
)
197 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
198 fprintf (outfile
, " [bb %d]", bb
->index
);
202 const char * const str
= X0STR (in_rtx
, i
);
204 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
208 fprintf (outfile
, " (\\\"%s\\\")", str
);
210 fprintf (outfile
, " (\"%s\")", str
);
220 fprintf (outfile
, " ");
221 print_rtx (XEXP (in_rtx
, i
));
230 fprintf (outfile
, "\n%s",
231 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
234 fputs ("[ ", outfile
);
235 if (NULL
!= XVEC (in_rtx
, i
))
238 if (XVECLEN (in_rtx
, i
))
241 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
242 print_rtx (XVECEXP (in_rtx
, i
, j
));
247 fprintf (outfile
, "\n%s",
248 (xspaces
+ (sizeof xspaces
- 1 - indent
* 2)));
250 fputs ("] ", outfile
);
256 fprintf (outfile
, " ");
257 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
258 fprintf (outfile
, " [");
259 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
260 fprintf (outfile
, "]");
265 register int value
= XINT (in_rtx
, i
);
268 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
270 fputc (' ', outfile
);
271 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
273 else if (GET_CODE (in_rtx
) == REG
&& value
<= LAST_VIRTUAL_REGISTER
)
275 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
276 fprintf (outfile
, " %d virtual-incoming-args", value
);
277 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
278 fprintf (outfile
, " %d virtual-stack-vars", value
);
279 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
280 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
281 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
282 fprintf (outfile
, " %d virtual-outgoing-args", value
);
283 else if (value
== VIRTUAL_CFA_REGNUM
)
284 fprintf (outfile
, " %d virtual-cfa", value
);
286 fprintf (outfile
, " %d virtual-reg-%d", value
,
287 value
-FIRST_VIRTUAL_REGISTER
);
289 else if (flag_dump_unnumbered
290 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
291 fputc ('#', outfile
);
293 fprintf (outfile
, " %d", value
);
295 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
296 && XINT (in_rtx
, i
) >= 0
297 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
298 fprintf (outfile
, " {%s}", name
);
303 /* Print NOTE_INSN names rather than integer codes. */
306 if (XINT (in_rtx
, i
) <= 0)
307 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
309 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
314 if (XEXP (in_rtx
, i
) != NULL
)
316 rtx sub
= XEXP (in_rtx
, i
);
317 enum rtx_code subc
= GET_CODE (sub
);
319 if (GET_CODE (in_rtx
) == LABEL_REF
&& subc
!= CODE_LABEL
)
322 if (flag_dump_unnumbered
)
323 fputc ('#', outfile
);
325 fprintf (outfile
, " %d", INSN_UID (sub
));
328 fputs (" 0", outfile
);
333 if (XBITMAP (in_rtx
, i
) == NULL
)
334 fputs (" {null}", outfile
);
336 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
342 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
346 fputs (" Unknown", outfile
);
352 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
357 if (GET_CODE (in_rtx
) == MEM
)
358 fprintf (outfile
, " %d", MEM_ALIAS_SET (in_rtx
));
360 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
361 if (GET_CODE (in_rtx
) == CONST_DOUBLE
&& FLOAT_MODE_P (GET_MODE (in_rtx
)))
364 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
365 fprintf (outfile
, " [%.16g]", val
);
369 if (GET_CODE (in_rtx
) == CODE_LABEL
)
371 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
372 if (LABEL_ALTERNATE_NAME (in_rtx
))
373 fprintf (outfile
, " [alternate name: %s]",
374 LABEL_ALTERNATE_NAME (in_rtx
));
377 if (GET_CODE (in_rtx
) == CALL_PLACEHOLDER
)
378 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
379 if (GET_CODE (tem
) == CALL_INSN
)
381 fprintf (outfile
, " ");
387 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
388 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
392 fputc (')', outfile
);
397 /* Print an rtx on the current line of FILE. Initially indent IND
401 print_inline_rtx (outf
, x
, ind
)
406 int oldsaw
= sawclose
;
407 int oldindent
= indent
;
417 /* Call this function from the debugger to see what X looks like. */
425 fprintf (stderr
, "\n");
428 /* Count of rtx's to print with debug_rtx_list.
429 This global exists because gdb user defined commands have no arguments. */
431 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
433 /* Call this function to print list from X on.
435 N is a count of the rtx's to print. Positive values print from the specified
436 rtx on. Negative values print a window around the rtx.
437 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
440 debug_rtx_list (x
, n
)
447 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
449 /* If we are printing a window, back up to the start. */
452 for (i
= count
/ 2; i
> 0; i
--)
454 if (PREV_INSN (x
) == 0)
459 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
463 /* Call this function to print an rtx list from START to END inclusive. */
466 debug_rtx_range (start
, end
)
472 if (!start
|| start
== end
)
474 start
= NEXT_INSN (start
);
478 /* Call this function to search an rtx list to find one with insn uid UID,
479 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
480 The found insn is returned to enable further debugging analysis. */
483 debug_rtx_find (x
, uid
)
487 while (x
!= 0 && INSN_UID (x
) != uid
)
491 debug_rtx_list (x
, debug_rtx_count
);
496 fprintf (stderr
, "insn uid %d not found\n", uid
);
501 /* External entry point for printing a chain of insns
502 starting with RTX_FIRST onto file OUTF.
503 A blank line separates insns.
505 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
508 print_rtl (outf
, rtx_first
)
512 register rtx tmp_rtx
;
518 fputs ("(nil)\n", outf
);
520 switch (GET_CODE (rtx_first
))
528 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
529 if (! flag_dump_unnumbered
530 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
533 fprintf (outfile
, "\n");
538 print_rtx (rtx_first
);
542 /* Like print_rtx, except specify a file. */
543 /* Return nonzero if we actually printed anything. */
546 print_rtl_single (outf
, x
)
552 if (! flag_dump_unnumbered
553 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)