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 (DECL_NAME (expr
))
96 fprintf (outfile
, " %s", IDENTIFIER_POINTER (DECL_NAME (expr
)));
97 else if (TREE_CODE (expr
) == RESULT_DECL
)
98 fputs (" <result>", outfile
);
100 fputs (" <anonymous>", outfile
);
103 /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
111 const char *format_ptr
;
118 fputc (' ', outfile
);
120 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
126 fputs ("(nil)", outfile
);
130 else if (GET_CODE (in_rtx
) > NUM_RTX_CODE
)
132 fprintf (outfile
, "(??? bad code %d\n)", GET_CODE (in_rtx
));
137 is_insn
= INSN_P (in_rtx
);
139 /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
140 in separate nodes and therefore have to handle them special here. */
142 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
143 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
150 /* Print name of expression code. */
151 if (flag_simple
&& GET_CODE (in_rtx
) == CONST_INT
)
152 fputc ('(', outfile
);
154 fprintf (outfile
, "(%s", GET_RTX_NAME (GET_CODE (in_rtx
)));
158 if (in_rtx
->in_struct
)
159 fputs ("/s", outfile
);
162 fputs ("/v", outfile
);
164 if (in_rtx
->unchanging
)
165 fputs ("/u", outfile
);
167 if (in_rtx
->integrated
)
168 fputs ("/i", outfile
);
170 if (in_rtx
->frame_related
)
171 fputs ("/f", outfile
);
174 fputs ("/j", outfile
);
177 fputs ("/c", outfile
);
179 if (GET_MODE (in_rtx
) != VOIDmode
)
181 /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
182 if (GET_CODE (in_rtx
) == EXPR_LIST
183 || GET_CODE (in_rtx
) == INSN_LIST
)
184 fprintf (outfile
, ":%s",
185 GET_REG_NOTE_NAME (GET_MODE (in_rtx
)));
187 fprintf (outfile
, ":%s", GET_MODE_NAME (GET_MODE (in_rtx
)));
192 /* Get the format string and skip the first elements if we have handled
194 format_ptr
= GET_RTX_FORMAT (GET_CODE (in_rtx
)) + i
;
195 for (; i
< GET_RTX_LENGTH (GET_CODE (in_rtx
)); i
++)
196 switch (*format_ptr
++)
201 str
= XTMPL (in_rtx
, i
);
206 str
= XSTR (in_rtx
, i
);
210 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
214 fprintf (outfile
, " (\\\"%s\\\")", str
);
216 fprintf (outfile
, " (\"%s\")", str
);
221 /* 0 indicates a field for internal use that should not be printed.
222 An exception is the third field of a NOTE, where it indicates
223 that the field has several different valid contents. */
225 if (i
== 1 && GET_CODE (in_rtx
) == REG
)
227 if (REGNO (in_rtx
) != ORIGINAL_REGNO (in_rtx
))
228 fprintf (outfile
, " [%d]", ORIGINAL_REGNO (in_rtx
));
231 if (i
== 3 && GET_CODE (in_rtx
) == NOTE
)
233 switch (NOTE_LINE_NUMBER (in_rtx
))
235 case NOTE_INSN_EH_REGION_BEG
:
236 case NOTE_INSN_EH_REGION_END
:
237 if (flag_dump_unnumbered
)
238 fprintf (outfile
, " #");
240 fprintf (outfile
, " %d", NOTE_EH_HANDLER (in_rtx
));
244 case NOTE_INSN_BLOCK_BEG
:
245 case NOTE_INSN_BLOCK_END
:
246 fprintf (outfile
, " ");
247 if (flag_dump_unnumbered
)
248 fprintf (outfile
, "#");
250 fprintf (outfile
, HOST_PTR_PRINTF
,
251 (char *) NOTE_BLOCK (in_rtx
));
255 case NOTE_INSN_RANGE_BEG
:
256 case NOTE_INSN_RANGE_END
:
260 fprintf (outfile
, " ");
261 print_rtx (NOTE_RANGE_INFO (in_rtx
));
265 case NOTE_INSN_BASIC_BLOCK
:
267 basic_block bb
= NOTE_BASIC_BLOCK (in_rtx
);
269 fprintf (outfile
, " [bb %d]", bb
->index
);
273 case NOTE_INSN_EXPECTED_VALUE
:
276 fprintf (outfile
, " ");
277 print_rtx (NOTE_EXPECTED_VALUE (in_rtx
));
281 case NOTE_INSN_DELETED_LABEL
:
282 if (NOTE_SOURCE_FILE (in_rtx
))
283 fprintf (outfile
, " (\"%s\")", NOTE_SOURCE_FILE (in_rtx
));
285 fprintf (outfile
, " \"\"");
290 const char * const str
= X0STR (in_rtx
, i
);
292 if (NOTE_LINE_NUMBER (in_rtx
) < 0)
295 fputs (dump_for_graph
? " \\\"\\\"" : " \"\"", outfile
);
299 fprintf (outfile
, " (\\\"%s\\\")", str
);
301 fprintf (outfile
, " (\"%s\")", str
);
313 fprintf (outfile
, " ");
314 print_rtx (XEXP (in_rtx
, i
));
323 fprintf (outfile
, "\n%s%*s",
324 print_rtx_head
, indent
* 2, "");
327 fputs ("[ ", outfile
);
328 if (NULL
!= XVEC (in_rtx
, i
))
331 if (XVECLEN (in_rtx
, i
))
334 for (j
= 0; j
< XVECLEN (in_rtx
, i
); j
++)
335 print_rtx (XVECEXP (in_rtx
, i
, j
));
340 fprintf (outfile
, "\n%s%*s", print_rtx_head
, indent
* 2, "");
342 fputs ("] ", outfile
);
349 fprintf (outfile
, " ");
350 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, XWINT (in_rtx
, i
));
353 fprintf (outfile
, " [");
354 fprintf (outfile
, HOST_WIDE_INT_PRINT_HEX
, XWINT (in_rtx
, i
));
355 fprintf (outfile
, "]");
360 if (i
== 5 && GET_CODE (in_rtx
) == NOTE
)
362 /* This field is only used for NOTE_INSN_DELETED_LABEL, and
363 other times often contains garbage from INSN->NOTE death. */
364 if (NOTE_LINE_NUMBER (in_rtx
) == NOTE_INSN_DELETED_LABEL
)
365 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
369 int value
= XINT (in_rtx
, i
);
372 if (GET_CODE (in_rtx
) == REG
&& value
< FIRST_PSEUDO_REGISTER
)
374 fputc (' ', outfile
);
375 DEBUG_PRINT_REG (in_rtx
, 0, outfile
);
377 else if (GET_CODE (in_rtx
) == REG
378 && value
<= LAST_VIRTUAL_REGISTER
)
380 if (value
== VIRTUAL_INCOMING_ARGS_REGNUM
)
381 fprintf (outfile
, " %d virtual-incoming-args", value
);
382 else if (value
== VIRTUAL_STACK_VARS_REGNUM
)
383 fprintf (outfile
, " %d virtual-stack-vars", value
);
384 else if (value
== VIRTUAL_STACK_DYNAMIC_REGNUM
)
385 fprintf (outfile
, " %d virtual-stack-dynamic", value
);
386 else if (value
== VIRTUAL_OUTGOING_ARGS_REGNUM
)
387 fprintf (outfile
, " %d virtual-outgoing-args", value
);
388 else if (value
== VIRTUAL_CFA_REGNUM
)
389 fprintf (outfile
, " %d virtual-cfa", value
);
391 fprintf (outfile
, " %d virtual-reg-%d", value
,
392 value
-FIRST_VIRTUAL_REGISTER
);
394 else if (flag_dump_unnumbered
395 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
))
396 fputc ('#', outfile
);
398 fprintf (outfile
, " %d", value
);
400 if (is_insn
&& &INSN_CODE (in_rtx
) == &XINT (in_rtx
, i
)
401 && XINT (in_rtx
, i
) >= 0
402 && (name
= get_insn_name (XINT (in_rtx
, i
))) != NULL
)
403 fprintf (outfile
, " {%s}", name
);
408 /* Print NOTE_INSN names rather than integer codes. */
411 if (XINT (in_rtx
, i
) >= (int) NOTE_INSN_BIAS
412 && XINT (in_rtx
, i
) < (int) NOTE_INSN_MAX
)
413 fprintf (outfile
, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx
, i
)));
415 fprintf (outfile
, " %d", XINT (in_rtx
, i
));
420 if (XEXP (in_rtx
, i
) != NULL
)
422 rtx sub
= XEXP (in_rtx
, i
);
423 enum rtx_code subc
= GET_CODE (sub
);
425 if (GET_CODE (in_rtx
) == LABEL_REF
)
428 && NOTE_LINE_NUMBER (sub
) == NOTE_INSN_DELETED_LABEL
)
430 if (flag_dump_unnumbered
)
431 fprintf (outfile
, " [# deleted]");
433 fprintf (outfile
, " [%d deleted]", INSN_UID (sub
));
438 if (subc
!= CODE_LABEL
)
442 if (flag_dump_unnumbered
)
443 fputs (" #", outfile
);
445 fprintf (outfile
, " %d", INSN_UID (sub
));
448 fputs (" 0", outfile
);
453 if (XBITMAP (in_rtx
, i
) == NULL
)
454 fputs (" {null}", outfile
);
456 bitmap_print (outfile
, XBITMAP (in_rtx
, i
), " {", "}");
462 fprintf (outfile
, HOST_PTR_PRINTF
, (char *) XTREE (in_rtx
, i
));
466 fputs (" Unknown", outfile
);
472 "switch format wrong in rtl.print_rtx(). format was: %c.\n",
477 switch (GET_CODE (in_rtx
))
480 fputs (" [", outfile
);
481 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
, MEM_ALIAS_SET (in_rtx
));
483 if (MEM_EXPR (in_rtx
))
484 print_mem_expr (outfile
, MEM_EXPR (in_rtx
));
486 if (MEM_OFFSET (in_rtx
))
488 fputc ('+', outfile
);
489 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
490 INTVAL (MEM_OFFSET (in_rtx
)));
493 if (MEM_SIZE (in_rtx
))
495 fputs (" S", outfile
);
496 fprintf (outfile
, HOST_WIDE_INT_PRINT_DEC
,
497 INTVAL (MEM_SIZE (in_rtx
)));
500 if (MEM_ALIGN (in_rtx
) != 1)
501 fprintf (outfile
, " A%u", MEM_ALIGN (in_rtx
));
503 fputc (']', outfile
);
506 #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT && MAX_LONG_DOUBLE_TYPE_SIZE == 64
508 if (FLOAT_MODE_P (GET_MODE (in_rtx
)))
511 REAL_VALUE_FROM_CONST_DOUBLE (val
, in_rtx
);
512 fprintf (outfile
, " [%.16g]", val
);
518 fprintf (outfile
, " [%d uses]", LABEL_NUSES (in_rtx
));
519 if (LABEL_ALTERNATE_NAME (in_rtx
))
520 fprintf (outfile
, " [alternate name: %s]",
521 LABEL_ALTERNATE_NAME (in_rtx
));
524 case CALL_PLACEHOLDER
:
525 if (debug_call_placeholder_verbose
)
527 fputs (" (cond [\n (const_string \"normal\") (sequence [", outfile
);
528 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
530 fputs ("\n ", outfile
);
531 print_inline_rtx (outfile
, tem
, 4);
534 tem
= XEXP (in_rtx
, 1);
536 fputs ("\n ])\n (const_string \"tail_call\") (sequence [",
538 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
540 fputs ("\n ", outfile
);
541 print_inline_rtx (outfile
, tem
, 4);
544 tem
= XEXP (in_rtx
, 2);
546 fputs ("\n ])\n (const_string \"tail_recursion\") (sequence [",
548 for (; tem
!= 0; tem
= NEXT_INSN (tem
))
550 fputs ("\n ", outfile
);
551 print_inline_rtx (outfile
, tem
, 4);
554 fputs ("\n ])\n ])", outfile
);
558 for (tem
= XEXP (in_rtx
, 0); tem
!= 0; tem
= NEXT_INSN (tem
))
559 if (GET_CODE (tem
) == CALL_INSN
)
561 fprintf (outfile
, " ");
572 && (is_insn
|| GET_CODE (in_rtx
) == NOTE
573 || GET_CODE (in_rtx
) == CODE_LABEL
|| GET_CODE (in_rtx
) == BARRIER
))
577 fputc (')', outfile
);
582 /* Print an rtx on the current line of FILE. Initially indent IND
586 print_inline_rtx (outf
, x
, ind
)
591 int oldsaw
= sawclose
;
592 int oldindent
= indent
;
602 /* Call this function from the debugger to see what X looks like. */
610 fprintf (stderr
, "\n");
613 /* Count of rtx's to print with debug_rtx_list.
614 This global exists because gdb user defined commands have no arguments. */
616 int debug_rtx_count
= 0; /* 0 is treated as equivalent to 1 */
618 /* Call this function to print list from X on.
620 N is a count of the rtx's to print. Positive values print from the specified
621 rtx on. Negative values print a window around the rtx.
622 EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
625 debug_rtx_list (x
, n
)
632 count
= n
== 0 ? 1 : n
< 0 ? -n
: n
;
634 /* If we are printing a window, back up to the start. */
637 for (i
= count
/ 2; i
> 0; i
--)
639 if (PREV_INSN (x
) == 0)
644 for (i
= count
, insn
= x
; i
> 0 && insn
!= 0; i
--, insn
= NEXT_INSN (insn
))
648 /* Call this function to print an rtx list from START to END inclusive. */
651 debug_rtx_range (start
, end
)
657 if (!start
|| start
== end
)
659 start
= NEXT_INSN (start
);
663 /* Call this function to search an rtx list to find one with insn uid UID,
664 and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
665 The found insn is returned to enable further debugging analysis. */
668 debug_rtx_find (x
, uid
)
672 while (x
!= 0 && INSN_UID (x
) != uid
)
676 debug_rtx_list (x
, debug_rtx_count
);
681 fprintf (stderr
, "insn uid %d not found\n", uid
);
686 /* External entry point for printing a chain of insns
687 starting with RTX_FIRST onto file OUTF.
688 A blank line separates insns.
690 If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
693 print_rtl (outf
, rtx_first
)
704 fputs (print_rtx_head
, outf
);
705 fputs ("(nil)\n", outf
);
708 switch (GET_CODE (rtx_first
))
716 for (tmp_rtx
= rtx_first
; tmp_rtx
!= 0; tmp_rtx
= NEXT_INSN (tmp_rtx
))
717 if (! flag_dump_unnumbered
718 || GET_CODE (tmp_rtx
) != NOTE
|| NOTE_LINE_NUMBER (tmp_rtx
) < 0)
720 fputs (print_rtx_head
, outfile
);
722 fprintf (outfile
, "\n");
727 fputs (print_rtx_head
, outfile
);
728 print_rtx (rtx_first
);
732 /* Like print_rtx, except specify a file. */
733 /* Return nonzero if we actually printed anything. */
736 print_rtl_single (outf
, x
)
742 if (! flag_dump_unnumbered
743 || GET_CODE (x
) != NOTE
|| NOTE_LINE_NUMBER (x
) < 0)
745 fputs (print_rtx_head
, outfile
);
754 /* Like print_rtl except without all the detail; for example,
755 if RTX is a CONST_INT then print in decimal format. */
758 print_simple_rtl (outf
, x
)