1 /* Print RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000, 2002, 2003
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
25 #include "coretypes.h"
29 /* We don't want the tree code checking code for the access to the
30 DECL_NAME to be included in the gen* programs. */
31 #undef ENABLE_TREE_CHECKING
35 #include "hard-reg-set.h"
36 #include "basic-block.h"
38 /* How to print out a register name.
39 We don't use PRINT_REG because some definitions of PRINT_REG
41 #ifndef DEBUG_PRINT_REG
42 #define DEBUG_PRINT_REG(RTX, CODE, FILE) \
43 fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
46 /* Array containing all of the register names */
48 #ifdef DEBUG_REGISTER_NAMES
49 static const char * const debug_reg_names
[] = DEBUG_REGISTER_NAMES
;
50 #define reg_names debug_reg_names
52 const char * reg_names
[] = REGISTER_NAMES
;
57 static int sawclose
= 0;
61 static void print_rtx
PARAMS ((rtx
));
63 /* String printed at beginning of each RTL when it is dumped.
64 This string is set to ASM_COMMENT_START when the RTL is dumped in
65 the assembly output file. */
66 const char *print_rtx_head
= "";
68 /* Nonzero means suppress output of instruction numbers and line number
69 notes in debugging dumps.
70 This must be defined here so that programs like gencodes can be linked. */
71 int flag_dump_unnumbered
= 0;
73 /* Nonzero means use simplified format without flags, modes, etc. */
76 /* Nonzero if we are dumping graphical description. */
79 /* Nonzero to dump all call_placeholder alternatives. */
80 static int debug_call_placeholder_verbose
;
83 print_mem_expr (outfile
, expr
)
87 if (TREE_CODE (expr
) == COMPONENT_REF
)
89 if (TREE_OPERAND (expr
, 0))
90 print_mem_expr (outfile
, TREE_OPERAND (expr
, 0));
92 fputs (" <variable>", outfile
);
93 if (DECL_NAME (TREE_OPERAND (expr
, 1)))
94 fprintf (outfile
, ".%s",
95 IDENTIFIER_POINTER (DECL_NAME (TREE_OPERAND (expr
, 1))));
97 else if (TREE_CODE (expr
) == INDIRECT_REF
)
99 fputs (" (*", outfile
);
100 print_mem_expr (outfile
, TREE_OPERAND (expr
, 0));
101 fputs (")", outfile
);
103 else if (DECL_NAME (expr
))
104 fprintf (outfile
, " %s", IDENTIFIER_POINTER (DECL_NAME (expr
)));
105 else if (TREE_CODE (expr
) == RESULT_DECL
)
106 fputs (" <result>", outfile
);
108 fputs (" <anonymous>", outfile
);
111 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
119 const char *format_ptr
;
126 fputc (' ', outfile
);
128 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
134 fputs ("(nil)", outfile
);
138 else if (GET_CODE (in_rtx
) > NUM_RTX_CODE
)
140 fprintf (outfile
, "(??? bad code %d\n)", GET_CODE (in_rtx
));
145 is_insn
= INSN_P (in_rtx
);
147 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
148 in separate nodes and therefore have to handle them special here. */
150 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
151 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
158 /* Print name of expression code. */
159 if (flag_simple
&& GET_CODE (in_rtx
) == CONST_INT
)
160 fputc ('(', outfile
);
162 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
166 if (RTX_FLAG (in_rtx
, in_struct
))
167 fputs ("/s", outfile
);
169 if (RTX_FLAG (in_rtx
, volatil
))
170 fputs ("/v", outfile
);
172 if (RTX_FLAG (in_rtx
, unchanging
))
173 fputs ("/u", outfile
);
175 if (RTX_FLAG (in_rtx
, integrated
))
176 fputs ("/i", outfile
);
178 if (RTX_FLAG (in_rtx
, frame_related
))
179 fputs ("/f", outfile
);
181 if (RTX_FLAG (in_rtx
, jump
))
182 fputs ("/j", outfile
);
184 if (RTX_FLAG (in_rtx
, call
))
185 fputs ("/c", outfile
);
187 if (GET_MODE (in_rtx
) != VOIDmode
)
189 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
190 if (GET_CODE (in_rtx
) == EXPR_LIST
191 || GET_CODE (in_rtx
) == INSN_LIST
)
192 fprintf (outfile
, ":%s",
193 GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
195 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
200 #ifndef GENERATOR_FILE
201 if (GET_CODE (in_rtx
) == CONST_DOUBLE
&& FLOAT_MODE_P (GET_MODE (in_rtx
)))
205 /* Get the format string and skip the first elements if we have handled
207 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
208 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
209 switch (*format_ptr
++)
214 str
= XTMPL (in_rtx
, i
);
219 str
= XSTR (in_rtx
, i
);
223 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
227 fprintf (outfile
, " (\\\"%s\\\")", str
);
229 fprintf (outfile
, " (\"%s\")", str
);
234 /* 0 indicates a field for internal use that should not be printed.
235 An exception is the third field of a NOTE, where it indicates
236 that the field has several different valid contents. */
238 if (i
== 1 && GET_CODE (in_rtx
) == REG
)
240 if (REGNO (in_rtx
) != ORIGINAL_REGNO (in_rtx
))
241 fprintf (outfile
, " [%d]", ORIGINAL_REGNO (in_rtx
));
243 #ifndef GENERATOR_FILE
244 else if (i
== 1 && GET_CODE (in_rtx
) == SYMBOL_REF
)
246 int flags
= SYMBOL_REF_FLAGS (in_rtx
);
248 fprintf (outfile
, " [flags 0x%x]", flags
);
250 else if (i
== 2 && GET_CODE (in_rtx
) == SYMBOL_REF
)
252 tree decl
= SYMBOL_REF_DECL (in_rtx
);
254 print_node_brief (outfile
, "", decl
, 0);
257 else if (i
== 4 && GET_CODE (in_rtx
) == NOTE
)
259 switch (NOTE_LINE_NUMBER (in_rtx
))
261 case NOTE_INSN_EH_REGION_BEG
:
262 case NOTE_INSN_EH_REGION_END
:
263 if (flag_dump_unnumbered
)
264 fprintf (outfile
, " #");
266 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
270 case NOTE_INSN_BLOCK_BEG
:
271 case NOTE_INSN_BLOCK_END
:
272 fprintf (outfile
, " ");
273 if (flag_dump_unnumbered
)
274 fprintf (outfile
, "#");
276 fprintf (outfile
, HOST_PTR_PRINTF
,
277 (char *) NOTE_BLOCK (in_rtx
));
281 case NOTE_INSN_BASIC_BLOCK
:
283 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
285 fprintf (outfile
, " [bb %d]", bb
->index
);
289 case NOTE_INSN_EXPECTED_VALUE
:
292 fprintf (outfile
, " ");
293 print_rtx (NOTE_EXPECTED_VALUE (in_rtx
));
297 case NOTE_INSN_DELETED_LABEL
:
298 if (NOTE_SOURCE_FILE (in_rtx
))
299 fprintf (outfile
, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx
));
301 fprintf (outfile
, " \"\"");
304 case NOTE_INSN_PREDICTION
:
305 if (NOTE_PREDICTION (in_rtx
))
306 fprintf (outfile
, " [ %d %d ] ",
307 (int)NOTE_PREDICTION_ALG (in_rtx
),
308 (int) NOTE_PREDICTION_FLAGS (in_rtx
));
310 fprintf (outfile
, " [ ERROR ]");
315 const char * const str
= X0STR (in_rtx
, i
);
317 if (NOTE_LINE_NUMBER (in_rtx
) < 0)
320 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
324 fprintf (outfile
, " (\\\"%s\\\")", str
);
326 fprintf (outfile
, " (\"%s\")", str
);
338 fprintf (outfile
, " ");
339 print_rtx (XEXP (in_rtx
, i
));
348 fprintf (outfile
, "\n%s%*s",
349 print_rtx_head
, indent
* 2, "");
352 fputs (" [", outfile
);
353 if (NULL
!= XVEC (in_rtx
, i
))
356 if (XVECLEN (in_rtx
, i
))
359 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
360 print_rtx (XVECEXP (in_rtx
, i
, j
));
365 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
367 fputs ("]", outfile
);
374 fprintf (outfile
, " ");
375 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
378 fprintf (outfile
, " [");
379 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
380 fprintf (outfile
, "]");
385 if (i
== 6 && GET_CODE (in_rtx
) == NOTE
)
387 /* This field is only used for NOTE_INSN_DELETED_LABEL, and
388 other times often contains garbage from INSN->NOTE death. */
389 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_DELETED_LABEL
)
390 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
394 int value
= XINT (in_rtx
, i
);
397 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
399 fputc (' ', outfile
);
400 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
402 else if (GET_CODE (in_rtx
) == REG
403 && value
<= LAST_VIRTUAL_REGISTER
)
405 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
406 fprintf (outfile
, " %d virtual-incoming-args", value
);
407 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
408 fprintf (outfile
, " %d virtual-stack-vars", value
);
409 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
410 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
411 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
412 fprintf (outfile
, " %d virtual-outgoing-args", value
);
413 else if (value
== VIRTUAL_CFA_REGNUM
)
414 fprintf (outfile
, " %d virtual-cfa", value
);
416 fprintf (outfile
, " %d virtual-reg-%d", value
,
417 value
-FIRST_VIRTUAL_REGISTER
);
419 else if (flag_dump_unnumbered
420 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
421 fputc ('#', outfile
);
423 fprintf (outfile
, " %d", value
);
425 if (GET_CODE (in_rtx
) == REG
&& REG_ATTRS (in_rtx
))
427 fputs (" [", outfile
);
428 if (ORIGINAL_REGNO (in_rtx
) != REGNO (in_rtx
))
429 fprintf (outfile
, "orig:%i", ORIGINAL_REGNO (in_rtx
));
430 if (REG_EXPR (in_rtx
))
431 print_mem_expr (outfile
, REG_EXPR (in_rtx
));
433 if (REG_OFFSET (in_rtx
))
435 fputc ('+', outfile
);
436 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
437 REG_OFFSET (in_rtx
));
439 fputs (" ]", outfile
);
442 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
443 && XINT (in_rtx
, i
) >= 0
444 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
445 fprintf (outfile
, " {%s}", name
);
450 /* Print NOTE_INSN names rather than integer codes. */
453 if (XINT (in_rtx
, i
) >= (int) NOTE_INSN_BIAS
454 && XINT (in_rtx
, i
) < (int) NOTE_INSN_MAX
)
455 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
457 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
462 if (XEXP (in_rtx
, i
) != NULL
)
464 rtx sub
= XEXP (in_rtx
, i
);
465 enum rtx_code subc
= GET_CODE (sub
);
467 if (GET_CODE (in_rtx
) == LABEL_REF
)
470 && NOTE_LINE_NUMBER (sub
) == NOTE_INSN_DELETED_LABEL
)
472 if (flag_dump_unnumbered
)
473 fprintf (outfile
, " [# deleted]");
475 fprintf (outfile
, " [%d deleted]", INSN_UID (sub
));
480 if (subc
!= CODE_LABEL
)
484 if (flag_dump_unnumbered
)
485 fputs (" #", outfile
);
487 fprintf (outfile
, " %d", INSN_UID (sub
));
490 fputs (" 0", outfile
);
495 if (XBITMAP (in_rtx
, i
) == NULL
)
496 fputs (" {null}", outfile
);
498 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
504 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
508 fputs (" Unknown", outfile
);
513 if (XBBDEF (in_rtx
, i
))
514 fprintf (outfile
, " %i", XBBDEF (in_rtx
, i
)->index
);
519 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
524 switch (GET_CODE (in_rtx
))
526 #ifndef GENERATOR_FILE
528 fputs (" [", outfile
);
529 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, MEM_ALIAS_SET (in_rtx
));
531 if (MEM_EXPR (in_rtx
))
532 print_mem_expr (outfile
, MEM_EXPR (in_rtx
));
534 if (MEM_OFFSET (in_rtx
))
536 fputc ('+', outfile
);
537 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
538 INTVAL (MEM_OFFSET (in_rtx
)));
541 if (MEM_SIZE (in_rtx
))
543 fputs (" S", outfile
);
544 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
545 INTVAL (MEM_SIZE (in_rtx
)));
548 if (MEM_ALIGN (in_rtx
) != 1)
549 fprintf (outfile
, " A%u", MEM_ALIGN (in_rtx
));
551 fputc (']', outfile
);
555 if (FLOAT_MODE_P (GET_MODE (in_rtx
)))
559 real_to_decimal (s
, CONST_DOUBLE_REAL_VALUE (in_rtx
),
561 fprintf (outfile
, " %s", s
);
563 real_to_hexadecimal (s
, CONST_DOUBLE_REAL_VALUE (in_rtx
),
565 fprintf (outfile
, " [%s]", s
);
571 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
572 switch (LABEL_KIND (in_rtx
))
574 case LABEL_NORMAL
: break;
575 case LABEL_STATIC_ENTRY
: fputs (" [entry]", outfile
); break;
576 case LABEL_GLOBAL_ENTRY
: fputs (" [global entry]", outfile
); break;
577 case LABEL_WEAK_ENTRY
: fputs (" [weak entry]", outfile
); break;
582 case CALL_PLACEHOLDER
:
583 if (debug_call_placeholder_verbose
)
585 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile
);
586 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
588 fputs ("\n ", outfile
);
589 print_inline_rtx (outfile
, tem
, 4);
592 tem
= XEXP (in_rtx
, 1);
594 fputs ("\n ])\n (const_string \"tail_call\") (sequence [",
596 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
598 fputs ("\n ", outfile
);
599 print_inline_rtx (outfile
, tem
, 4);
602 tem
= XEXP (in_rtx
, 2);
604 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [",
606 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
608 fputs ("\n ", outfile
);
609 print_inline_rtx (outfile
, tem
, 4);
612 fputs ("\n ])\n ])", outfile
);
616 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
617 if (GET_CODE (tem
) == CALL_INSN
)
619 fprintf (outfile
, " ");
630 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
631 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
635 fputc (')', outfile
);
640 /* Print an rtx on the current line of FILE. Initially indent IND
644 print_inline_rtx (outf
, x
, ind
)
649 int oldsaw
= sawclose
;
650 int oldindent
= indent
;
660 /* Call this function from the debugger to see what X looks like. */
669 fprintf (stderr
, "\n");
672 /* Count of rtx's to print with debug_rtx_list.
673 This global exists because gdb user defined commands have no arguments. */
675 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
677 /* Call this function to print list from X on.
679 N is a count of the rtx's to print. Positive values print from the specified
680 rtx on. Negative values print a window around the rtx.
681 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
684 debug_rtx_list (x
, n
)
691 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
693 /* If we are printing a window, back up to the start. */
696 for (i
= count
/ 2; i
> 0; i
--)
698 if (PREV_INSN (x
) == 0)
703 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
706 fprintf (stderr
, "\n");
710 /* Call this function to print an rtx list from START to END inclusive. */
713 debug_rtx_range (start
, end
)
719 fprintf (stderr
, "\n");
720 if (!start
|| start
== end
)
722 start
= NEXT_INSN (start
);
726 /* Call this function to search an rtx list to find one with insn uid UID,
727 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
728 The found insn is returned to enable further debugging analysis. */
731 debug_rtx_find (x
, uid
)
735 while (x
!= 0 && INSN_UID (x
) != uid
)
739 debug_rtx_list (x
, debug_rtx_count
);
744 fprintf (stderr
, "insn uid %d not found\n", uid
);
749 /* External entry point for printing a chain of insns
750 starting with RTX_FIRST onto file OUTF.
751 A blank line separates insns.
753 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
756 print_rtl (outf
, rtx_first
)
767 fputs (print_rtx_head
, outf
);
768 fputs ("(nil)\n", outf
);
771 switch (GET_CODE (rtx_first
))
779 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
780 if (! flag_dump_unnumbered
781 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
783 fputs (print_rtx_head
, outfile
);
785 fprintf (outfile
, "\n");
790 fputs (print_rtx_head
, outfile
);
791 print_rtx (rtx_first
);
795 /* Like print_rtx, except specify a file. */
796 /* Return nonzero if we actually printed anything. */
799 print_rtl_single (outf
, x
)
805 if (! flag_dump_unnumbered
806 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)
808 fputs (print_rtx_head
, outfile
);
817 /* Like print_rtl except without all the detail; for example,
818 if RTX is a CONST_INT then print in decimal format. */
821 print_simple_rtl (outf
, x
)