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
;
81 print_mem_expr (outfile
, expr
)
85 if (TREE_CODE (expr
) == COMPONENT_REF
)
87 if (TREE_OPERAND (expr
, 0))
88 print_mem_expr (outfile
, TREE_OPERAND (expr
, 0));
90 fputs (" <variable>", outfile
);
91 if (DECL_NAME (TREE_OPERAND (expr
, 1)))
92 fprintf (outfile
, ".%s",
93 IDENTIFIER_POINTER (DECL_NAME (TREE_OPERAND (expr
, 1))));
95 else if (TREE_CODE (expr
) == INDIRECT_REF
)
97 fputs (" (*", outfile
);
98 print_mem_expr (outfile
, TREE_OPERAND (expr
, 0));
101 else if (DECL_NAME (expr
))
102 fprintf (outfile
, " %s", IDENTIFIER_POINTER (DECL_NAME (expr
)));
103 else if (TREE_CODE (expr
) == RESULT_DECL
)
104 fputs (" <result>", outfile
);
106 fputs (" <anonymous>", outfile
);
109 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
117 const char *format_ptr
;
124 fputc (' ', outfile
);
126 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
132 fputs ("(nil)", outfile
);
136 else if (GET_CODE (in_rtx
) > NUM_RTX_CODE
)
138 fprintf (outfile
, "(??? bad code %d\n)", GET_CODE (in_rtx
));
143 is_insn
= INSN_P (in_rtx
);
145 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
146 in separate nodes and therefore have to handle them special here. */
148 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
149 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
156 /* Print name of expression code. */
157 if (flag_simple
&& GET_CODE (in_rtx
) == CONST_INT
)
158 fputc ('(', outfile
);
160 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
164 if (RTX_FLAG (in_rtx
, in_struct
))
165 fputs ("/s", outfile
);
167 if (RTX_FLAG (in_rtx
, volatil
))
168 fputs ("/v", outfile
);
170 if (RTX_FLAG (in_rtx
, unchanging
))
171 fputs ("/u", outfile
);
173 if (RTX_FLAG (in_rtx
, integrated
))
174 fputs ("/i", outfile
);
176 if (RTX_FLAG (in_rtx
, frame_related
))
177 fputs ("/f", outfile
);
179 if (RTX_FLAG (in_rtx
, jump
))
180 fputs ("/j", outfile
);
182 if (RTX_FLAG (in_rtx
, call
))
183 fputs ("/c", outfile
);
185 if (GET_MODE (in_rtx
) != VOIDmode
)
187 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
188 if (GET_CODE (in_rtx
) == EXPR_LIST
189 || GET_CODE (in_rtx
) == INSN_LIST
)
190 fprintf (outfile
, ":%s",
191 GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
193 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
198 /* Get the format string and skip the first elements if we have handled
200 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
201 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
202 switch (*format_ptr
++)
207 str
= XTMPL (in_rtx
, i
);
212 str
= XSTR (in_rtx
, i
);
216 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
220 fprintf (outfile
, " (\\\"%s\\\")", str
);
222 fprintf (outfile
, " (\"%s\")", str
);
227 /* 0 indicates a field for internal use that should not be printed.
228 An exception is the third field of a NOTE, where it indicates
229 that the field has several different valid contents. */
231 if (i
== 1 && GET_CODE (in_rtx
) == REG
)
233 if (REGNO (in_rtx
) != ORIGINAL_REGNO (in_rtx
))
234 fprintf (outfile
, " [%d]", ORIGINAL_REGNO (in_rtx
));
237 if (i
== 4 && GET_CODE (in_rtx
) == NOTE
)
239 switch (NOTE_LINE_NUMBER (in_rtx
))
241 case NOTE_INSN_EH_REGION_BEG
:
242 case NOTE_INSN_EH_REGION_END
:
243 if (flag_dump_unnumbered
)
244 fprintf (outfile
, " #");
246 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
250 case NOTE_INSN_BLOCK_BEG
:
251 case NOTE_INSN_BLOCK_END
:
252 fprintf (outfile
, " ");
253 if (flag_dump_unnumbered
)
254 fprintf (outfile
, "#");
256 fprintf (outfile
, HOST_PTR_PRINTF
,
257 (char *) NOTE_BLOCK (in_rtx
));
261 case NOTE_INSN_BASIC_BLOCK
:
263 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
265 fprintf (outfile
, " [bb %d]", bb
->index
);
269 case NOTE_INSN_EXPECTED_VALUE
:
272 fprintf (outfile
, " ");
273 print_rtx (NOTE_EXPECTED_VALUE (in_rtx
));
277 case NOTE_INSN_DELETED_LABEL
:
278 if (NOTE_SOURCE_FILE (in_rtx
))
279 fprintf (outfile
, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx
));
281 fprintf (outfile
, " \"\"");
284 case NOTE_INSN_PREDICTION
:
285 if (NOTE_PREDICTION (in_rtx
))
286 fprintf (outfile
, " [ %d %d ] ",
287 (int)NOTE_PREDICTION_ALG (in_rtx
),
288 (int) NOTE_PREDICTION_FLAGS (in_rtx
));
290 fprintf (outfile
, " [ ERROR ]");
295 const char * const str
= X0STR (in_rtx
, i
);
297 if (NOTE_LINE_NUMBER (in_rtx
) < 0)
300 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
304 fprintf (outfile
, " (\\\"%s\\\")", str
);
306 fprintf (outfile
, " (\"%s\")", str
);
318 fprintf (outfile
, " ");
319 print_rtx (XEXP (in_rtx
, i
));
328 fprintf (outfile
, "\n%s%*s",
329 print_rtx_head
, indent
* 2, "");
332 fputs (" [", outfile
);
333 if (NULL
!= XVEC (in_rtx
, i
))
336 if (XVECLEN (in_rtx
, i
))
339 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
340 print_rtx (XVECEXP (in_rtx
, i
, j
));
345 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
347 fputs ("]", outfile
);
354 fprintf (outfile
, " ");
355 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
358 fprintf (outfile
, " [");
359 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
360 fprintf (outfile
, "]");
365 if (i
== 6 && GET_CODE (in_rtx
) == NOTE
)
367 /* This field is only used for NOTE_INSN_DELETED_LABEL, and
368 other times often contains garbage from INSN->NOTE death. */
369 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_DELETED_LABEL
)
370 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
374 int value
= XINT (in_rtx
, i
);
377 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
379 fputc (' ', outfile
);
380 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
382 else if (GET_CODE (in_rtx
) == REG
383 && value
<= LAST_VIRTUAL_REGISTER
)
385 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
386 fprintf (outfile
, " %d virtual-incoming-args", value
);
387 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
388 fprintf (outfile
, " %d virtual-stack-vars", value
);
389 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
390 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
391 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
392 fprintf (outfile
, " %d virtual-outgoing-args", value
);
393 else if (value
== VIRTUAL_CFA_REGNUM
)
394 fprintf (outfile
, " %d virtual-cfa", value
);
396 fprintf (outfile
, " %d virtual-reg-%d", value
,
397 value
-FIRST_VIRTUAL_REGISTER
);
399 else if (flag_dump_unnumbered
400 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
401 fputc ('#', outfile
);
403 fprintf (outfile
, " %d", value
);
405 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
406 && XINT (in_rtx
, i
) >= 0
407 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
408 fprintf (outfile
, " {%s}", name
);
413 /* Print NOTE_INSN names rather than integer codes. */
416 if (XINT (in_rtx
, i
) >= (int) NOTE_INSN_BIAS
417 && XINT (in_rtx
, i
) < (int) NOTE_INSN_MAX
)
418 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
420 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
425 if (XEXP (in_rtx
, i
) != NULL
)
427 rtx sub
= XEXP (in_rtx
, i
);
428 enum rtx_code subc
= GET_CODE (sub
);
430 if (GET_CODE (in_rtx
) == LABEL_REF
)
433 && NOTE_LINE_NUMBER (sub
) == NOTE_INSN_DELETED_LABEL
)
435 if (flag_dump_unnumbered
)
436 fprintf (outfile
, " [# deleted]");
438 fprintf (outfile
, " [%d deleted]", INSN_UID (sub
));
443 if (subc
!= CODE_LABEL
)
447 if (flag_dump_unnumbered
)
448 fputs (" #", outfile
);
450 fprintf (outfile
, " %d", INSN_UID (sub
));
453 fputs (" 0", outfile
);
458 if (XBITMAP (in_rtx
, i
) == NULL
)
459 fputs (" {null}", outfile
);
461 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
467 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
471 fputs (" Unknown", outfile
);
476 if (XBBDEF (in_rtx
, i
))
477 fprintf (outfile
, " %i", XBBDEF (in_rtx
, i
)->index
);
482 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
487 switch (GET_CODE (in_rtx
))
490 fputs (" [", outfile
);
491 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, MEM_ALIAS_SET (in_rtx
));
493 if (MEM_EXPR (in_rtx
))
494 print_mem_expr (outfile
, MEM_EXPR (in_rtx
));
496 if (MEM_OFFSET (in_rtx
))
498 fputc ('+', outfile
);
499 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
500 INTVAL (MEM_OFFSET (in_rtx
)));
503 if (MEM_SIZE (in_rtx
))
505 fputs (" S", outfile
);
506 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
507 INTVAL (MEM_SIZE (in_rtx
)));
510 if (MEM_ALIGN (in_rtx
) != 1)
511 fprintf (outfile
, " A%u", MEM_ALIGN (in_rtx
));
513 fputc (']', outfile
);
517 /* It would be nice to do this, but it would require real.o to
518 be linked into the MD-generator programs. Maybe we should
519 do that. -zw 2002-03-03 */
521 if (FLOAT_MODE_P (GET_MODE (in_rtx
)))
526 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
527 REAL_VALUE_TO_DECIMAL (val
, "%.16g", s
);
528 fprintf (outfile
, " [%s]", s
);
534 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
535 switch (LABEL_KIND (in_rtx
))
537 case LABEL_NORMAL
: break;
538 case LABEL_STATIC_ENTRY
: fputs (" [entry]", outfile
); break;
539 case LABEL_GLOBAL_ENTRY
: fputs (" [global entry]", outfile
); break;
540 case LABEL_WEAK_ENTRY
: fputs (" [weak entry]", outfile
); break;
545 case CALL_PLACEHOLDER
:
546 if (debug_call_placeholder_verbose
)
548 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile
);
549 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
551 fputs ("\n ", outfile
);
552 print_inline_rtx (outfile
, tem
, 4);
555 tem
= XEXP (in_rtx
, 1);
557 fputs ("\n ])\n (const_string \"tail_call\") (sequence [",
559 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
561 fputs ("\n ", outfile
);
562 print_inline_rtx (outfile
, tem
, 4);
565 tem
= XEXP (in_rtx
, 2);
567 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [",
569 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
571 fputs ("\n ", outfile
);
572 print_inline_rtx (outfile
, tem
, 4);
575 fputs ("\n ])\n ])", outfile
);
579 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
580 if (GET_CODE (tem
) == CALL_INSN
)
582 fprintf (outfile
, " ");
593 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
594 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
598 fputc (')', outfile
);
603 /* Print an rtx on the current line of FILE. Initially indent IND
607 print_inline_rtx (outf
, x
, ind
)
612 int oldsaw
= sawclose
;
613 int oldindent
= indent
;
623 /* Call this function from the debugger to see what X looks like. */
632 fprintf (stderr
, "\n");
635 /* Count of rtx's to print with debug_rtx_list.
636 This global exists because gdb user defined commands have no arguments. */
638 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
640 /* Call this function to print list from X on.
642 N is a count of the rtx's to print. Positive values print from the specified
643 rtx on. Negative values print a window around the rtx.
644 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
647 debug_rtx_list (x
, n
)
654 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
656 /* If we are printing a window, back up to the start. */
659 for (i
= count
/ 2; i
> 0; i
--)
661 if (PREV_INSN (x
) == 0)
666 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
669 fprintf (stderr
, "\n");
673 /* Call this function to print an rtx list from START to END inclusive. */
676 debug_rtx_range (start
, end
)
682 fprintf (stderr
, "\n");
683 if (!start
|| start
== end
)
685 start
= NEXT_INSN (start
);
689 /* Call this function to search an rtx list to find one with insn uid UID,
690 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
691 The found insn is returned to enable further debugging analysis. */
694 debug_rtx_find (x
, uid
)
698 while (x
!= 0 && INSN_UID (x
) != uid
)
702 debug_rtx_list (x
, debug_rtx_count
);
707 fprintf (stderr
, "insn uid %d not found\n", uid
);
712 /* External entry point for printing a chain of insns
713 starting with RTX_FIRST onto file OUTF.
714 A blank line separates insns.
716 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
719 print_rtl (outf
, rtx_first
)
730 fputs (print_rtx_head
, outf
);
731 fputs ("(nil)\n", outf
);
734 switch (GET_CODE (rtx_first
))
742 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
743 if (! flag_dump_unnumbered
744 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
746 fputs (print_rtx_head
, outfile
);
748 fprintf (outfile
, "\n");
753 fputs (print_rtx_head
, outfile
);
754 print_rtx (rtx_first
);
758 /* Like print_rtx, except specify a file. */
759 /* Return nonzero if we actually printed anything. */
762 print_rtl_single (outf
, x
)
768 if (! flag_dump_unnumbered
769 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)
771 fputs (print_rtx_head
, outfile
);
780 /* Like print_rtl except without all the detail; for example,
781 if RTX is a CONST_INT then print in decimal format. */
784 print_simple_rtl (outf
, x
)