xref: /netbsd-src/external/gpl3/gcc.old/dist/gcc/rtl.c (revision bdc22b2e01993381dcefeff2bc9b56ca75a4235c)
1 /* RTL utility routines.
2    Copyright (C) 1987-2015 Free Software Foundation, Inc.
3 
4 This file is part of GCC.
5 
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10 
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3.  If not see
18 <http://www.gnu.org/licenses/>.  */
19 
20 /* This file is compiled twice: once for the generator programs
21    once for the compiler.  */
22 #ifdef GENERATOR_FILE
23 #include "bconfig.h"
24 #else
25 #include "config.h"
26 #endif
27 
28 #include "system.h"
29 #include "coretypes.h"
30 #include "tm.h"
31 #include "ggc.h"
32 #include "rtl.h"
33 #ifdef GENERATOR_FILE
34 # include "errors.h"
35 #else
36 # include "rtlhash.h"
37 # include "diagnostic-core.h"
38 #endif
39 
40 
41 /* Indexed by rtx code, gives number of operands for an rtx with that code.
42    Does NOT include rtx header data (code and links).  */
43 
44 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   sizeof FORMAT - 1 ,
45 
46 const unsigned char rtx_length[NUM_RTX_CODE] = {
47 #include "rtl.def"
48 };
49 
50 #undef DEF_RTL_EXPR
51 
52 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string.  */
53 
54 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   NAME ,
55 
56 const char * const rtx_name[NUM_RTX_CODE] = {
57 #include "rtl.def"		/* rtl expressions are documented here */
58 };
59 
60 #undef DEF_RTL_EXPR
61 
62 /* Indexed by rtx code, gives a sequence of operand-types for
63    rtx's of that code.  The sequence is a C string in which
64    each character describes one operand.  */
65 
66 const char * const rtx_format[NUM_RTX_CODE] = {
67   /* "*" undefined.
68          can cause a warning message
69      "0" field is unused (or used in a phase-dependent manner)
70          prints nothing
71      "i" an integer
72          prints the integer
73      "n" like "i", but prints entries from `note_insn_name'
74      "w" an integer of width HOST_BITS_PER_WIDE_INT
75          prints the integer
76      "s" a pointer to a string
77          prints the string
78      "S" like "s", but optional:
79 	 the containing rtx may end before this operand
80      "T" like "s", but treated specially by the RTL reader;
81          only found in machine description patterns.
82      "e" a pointer to an rtl expression
83          prints the expression
84      "E" a pointer to a vector that points to a number of rtl expressions
85          prints a list of the rtl expressions
86      "V" like "E", but optional:
87 	 the containing rtx may end before this operand
88      "u" a pointer to another insn
89          prints the uid of the insn.
90      "b" is a pointer to a bitmap header.
91      "B" is a basic block pointer.
92      "t" is a tree pointer.  */
93 
94 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   FORMAT ,
95 #include "rtl.def"		/* rtl expressions are defined here */
96 #undef DEF_RTL_EXPR
97 };
98 
99 /* Indexed by rtx code, gives a character representing the "class" of
100    that rtx code.  See rtl.def for documentation on the defined classes.  */
101 
102 const enum rtx_class rtx_class[NUM_RTX_CODE] = {
103 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   CLASS,
104 #include "rtl.def"		/* rtl expressions are defined here */
105 #undef DEF_RTL_EXPR
106 };
107 
108 /* Indexed by rtx code, gives the size of the rtx in bytes.  */
109 
110 const unsigned char rtx_code_size[NUM_RTX_CODE] = {
111 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)				\
112   (((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE			\
113     || (ENUM) == CONST_FIXED || (ENUM) == CONST_WIDE_INT)		\
114    ? RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (HOST_WIDE_INT)	\
115    : RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (rtunion)),
116 
117 #include "rtl.def"
118 #undef DEF_RTL_EXPR
119 };
120 
121 /* Names for kinds of NOTEs and REG_NOTEs.  */
122 
123 const char * const note_insn_name[NOTE_INSN_MAX] =
124 {
125 #define DEF_INSN_NOTE(NAME) #NAME,
126 #include "insn-notes.def"
127 #undef DEF_INSN_NOTE
128 };
129 
130 const char * const reg_note_name[REG_NOTE_MAX] =
131 {
132 #define DEF_REG_NOTE(NAME) #NAME,
133 #include "reg-notes.def"
134 #undef DEF_REG_NOTE
135 };
136 
137 static int rtx_alloc_counts[(int) LAST_AND_UNUSED_RTX_CODE];
138 static int rtx_alloc_sizes[(int) LAST_AND_UNUSED_RTX_CODE];
139 static int rtvec_alloc_counts;
140 static int rtvec_alloc_sizes;
141 
142 
143 /* Allocate an rtx vector of N elements.
144    Store the length, and initialize all elements to zero.  */
145 
146 rtvec
147 rtvec_alloc (int n)
148 {
149   rtvec rt;
150 
151   rt = ggc_alloc_rtvec_sized (n);
152   /* Clear out the vector.  */
153   memset (&rt->elem[0], 0, n * sizeof (rtx));
154 
155   PUT_NUM_ELEM (rt, n);
156 
157   if (GATHER_STATISTICS)
158     {
159       rtvec_alloc_counts++;
160       rtvec_alloc_sizes += n * sizeof (rtx);
161     }
162 
163   return rt;
164 }
165 
166 /* Create a bitwise copy of VEC.  */
167 
168 rtvec
169 shallow_copy_rtvec (rtvec vec)
170 {
171   rtvec newvec;
172   int n;
173 
174   n = GET_NUM_ELEM (vec);
175   newvec = rtvec_alloc (n);
176   memcpy (&newvec->elem[0], &vec->elem[0], sizeof (rtx) * n);
177   return newvec;
178 }
179 
180 /* Return the number of bytes occupied by rtx value X.  */
181 
182 unsigned int
183 rtx_size (const_rtx x)
184 {
185   if (CONST_WIDE_INT_P (x))
186     return (RTX_HDR_SIZE
187 	    + sizeof (struct hwivec_def)
188 	    + ((CONST_WIDE_INT_NUNITS (x) - 1)
189 	       * sizeof (HOST_WIDE_INT)));
190   if (GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_HAS_BLOCK_INFO_P (x))
191     return RTX_HDR_SIZE + sizeof (struct block_symbol);
192   return RTX_CODE_SIZE (GET_CODE (x));
193 }
194 
195 /* Allocate an rtx of code CODE with EXTRA bytes in it.  The CODE is
196    stored in the rtx; all the rest is initialized to zero.  */
197 
198 rtx
199 rtx_alloc_stat_v (RTX_CODE code MEM_STAT_DECL, int extra)
200 {
201   rtx rt = ggc_alloc_rtx_def_stat (RTX_CODE_SIZE (code) + extra
202 				   PASS_MEM_STAT);
203 
204   /* We want to clear everything up to the FLD array.  Normally, this
205      is one int, but we don't want to assume that and it isn't very
206      portable anyway; this is.  */
207 
208   memset (rt, 0, RTX_HDR_SIZE);
209   PUT_CODE (rt, code);
210 
211   if (GATHER_STATISTICS)
212     {
213       rtx_alloc_counts[code]++;
214       rtx_alloc_sizes[code] += RTX_CODE_SIZE (code);
215     }
216 
217   return rt;
218 }
219 
220 /* Allocate an rtx of code CODE.  The CODE is stored in the rtx;
221    all the rest is initialized to zero.  */
222 
223 rtx
224 rtx_alloc_stat (RTX_CODE code MEM_STAT_DECL)
225 {
226   return rtx_alloc_stat_v (code PASS_MEM_STAT, 0);
227 }
228 
229 /* Write the wide constant X to OUTFILE.  */
230 
231 void
232 cwi_output_hex (FILE *outfile, const_rtx x)
233 {
234   int i = CWI_GET_NUM_ELEM (x);
235   gcc_assert (i > 0);
236   if (CWI_ELT (x, i - 1) == 0)
237     /* The HOST_WIDE_INT_PRINT_HEX prepends a 0x only if the val is
238        non zero.  We want all numbers to have a 0x prefix.  */
239     fprintf (outfile, "0x");
240   fprintf (outfile, HOST_WIDE_INT_PRINT_HEX, CWI_ELT (x, --i));
241   while (--i >= 0)
242     fprintf (outfile, HOST_WIDE_INT_PRINT_PADDED_HEX, CWI_ELT (x, i));
243 }
244 
245 
246 /* Return true if ORIG is a sharable CONST.  */
247 
248 bool
249 shared_const_p (const_rtx orig)
250 {
251   gcc_assert (GET_CODE (orig) == CONST);
252 
253   /* CONST can be shared if it contains a SYMBOL_REF.  If it contains
254      a LABEL_REF, it isn't sharable.  */
255   return (GET_CODE (XEXP (orig, 0)) == PLUS
256 	  && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
257 	  && CONST_INT_P (XEXP (XEXP (orig, 0), 1)));
258 }
259 
260 
261 /* Create a new copy of an rtx.
262    Recursively copies the operands of the rtx,
263    except for those few rtx codes that are sharable.  */
264 
265 rtx
266 copy_rtx (rtx orig)
267 {
268   rtx copy;
269   int i, j;
270   RTX_CODE code;
271   const char *format_ptr;
272 
273   code = GET_CODE (orig);
274 
275   switch (code)
276     {
277     case REG:
278     case DEBUG_EXPR:
279     case VALUE:
280     CASE_CONST_ANY:
281     case SYMBOL_REF:
282     case CODE_LABEL:
283     case PC:
284     case CC0:
285     case RETURN:
286     case SIMPLE_RETURN:
287     case SCRATCH:
288       /* SCRATCH must be shared because they represent distinct values.  */
289       return orig;
290     case CLOBBER:
291       /* Share clobbers of hard registers (like cc0), but do not share pseudo reg
292          clobbers or clobbers of hard registers that originated as pseudos.
293          This is needed to allow safe register renaming.  */
294       if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER
295 	  && ORIGINAL_REGNO (XEXP (orig, 0)) == REGNO (XEXP (orig, 0)))
296 	return orig;
297       break;
298 
299     case CONST:
300       if (shared_const_p (orig))
301 	return orig;
302       break;
303 
304       /* A MEM with a constant address is not sharable.  The problem is that
305 	 the constant address may need to be reloaded.  If the mem is shared,
306 	 then reloading one copy of this mem will cause all copies to appear
307 	 to have been reloaded.  */
308 
309     default:
310       break;
311     }
312 
313   /* Copy the various flags, fields, and other information.  We assume
314      that all fields need copying, and then clear the fields that should
315      not be copied.  That is the sensible default behavior, and forces
316      us to explicitly document why we are *not* copying a flag.  */
317   copy = shallow_copy_rtx (orig);
318 
319   /* We do not copy the USED flag, which is used as a mark bit during
320      walks over the RTL.  */
321   RTX_FLAG (copy, used) = 0;
322 
323   format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
324 
325   for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
326     switch (*format_ptr++)
327       {
328       case 'e':
329 	if (XEXP (orig, i) != NULL)
330 	  XEXP (copy, i) = copy_rtx (XEXP (orig, i));
331 	break;
332 
333       case 'E':
334       case 'V':
335 	if (XVEC (orig, i) != NULL)
336 	  {
337 	    XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
338 	    for (j = 0; j < XVECLEN (copy, i); j++)
339 	      XVECEXP (copy, i, j) = copy_rtx (XVECEXP (orig, i, j));
340 	  }
341 	break;
342 
343       case 't':
344       case 'w':
345       case 'i':
346       case 's':
347       case 'S':
348       case 'T':
349       case 'u':
350       case 'B':
351       case '0':
352 	/* These are left unchanged.  */
353 	break;
354 
355       default:
356 	gcc_unreachable ();
357       }
358   return copy;
359 }
360 
361 /* Create a new copy of an rtx.  Only copy just one level.  */
362 
363 rtx
364 shallow_copy_rtx_stat (const_rtx orig MEM_STAT_DECL)
365 {
366   const unsigned int size = rtx_size (orig);
367   rtx const copy = ggc_alloc_rtx_def_stat (size PASS_MEM_STAT);
368   return (rtx) memcpy (copy, orig, size);
369 }
370 
371 /* Nonzero when we are generating CONCATs.  */
372 int generating_concat_p;
373 
374 /* Nonzero when we are expanding trees to RTL.  */
375 int currently_expanding_to_rtl;
376 
377 
378 
379 /* Same as rtx_equal_p, but call CB on each pair of rtx if CB is not NULL.
380    When the callback returns true, we continue with the new pair.
381    Whenever changing this function check if rtx_equal_p below doesn't need
382    changing as well.  */
383 
384 int
385 rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
386 {
387   int i;
388   int j;
389   enum rtx_code code;
390   const char *fmt;
391   rtx nx, ny;
392 
393   if (x == y)
394     return 1;
395   if (x == 0 || y == 0)
396     return 0;
397 
398   /* Invoke the callback first.  */
399   if (cb != NULL
400       && ((*cb) (&x, &y, &nx, &ny)))
401     return rtx_equal_p_cb (nx, ny, cb);
402 
403   code = GET_CODE (x);
404   /* Rtx's of different codes cannot be equal.  */
405   if (code != GET_CODE (y))
406     return 0;
407 
408   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
409      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
410 
411   if (GET_MODE (x) != GET_MODE (y))
412     return 0;
413 
414   /* MEMs referring to different address space are not equivalent.  */
415   if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
416     return 0;
417 
418   /* Some RTL can be compared nonrecursively.  */
419   switch (code)
420     {
421     case REG:
422       return (REGNO (x) == REGNO (y));
423 
424     case LABEL_REF:
425       return LABEL_REF_LABEL (x) == LABEL_REF_LABEL (y);
426 
427     case SYMBOL_REF:
428       return XSTR (x, 0) == XSTR (y, 0);
429 
430     case DEBUG_EXPR:
431     case VALUE:
432     case SCRATCH:
433     CASE_CONST_UNIQUE:
434       return 0;
435 
436     case DEBUG_IMPLICIT_PTR:
437       return DEBUG_IMPLICIT_PTR_DECL (x)
438 	     == DEBUG_IMPLICIT_PTR_DECL (y);
439 
440     case DEBUG_PARAMETER_REF:
441       return DEBUG_PARAMETER_REF_DECL (x)
442 	     == DEBUG_PARAMETER_REF_DECL (x);
443 
444     case ENTRY_VALUE:
445       return rtx_equal_p_cb (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y), cb);
446 
447     default:
448       break;
449     }
450 
451   /* Compare the elements.  If any pair of corresponding elements
452      fail to match, return 0 for the whole thing.  */
453 
454   fmt = GET_RTX_FORMAT (code);
455   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
456     {
457       switch (fmt[i])
458 	{
459 	case 'w':
460 	  if (XWINT (x, i) != XWINT (y, i))
461 	    return 0;
462 	  break;
463 
464 	case 'n':
465 	case 'i':
466 	  if (XINT (x, i) != XINT (y, i))
467 	    {
468 #ifndef GENERATOR_FILE
469 	      if (((code == ASM_OPERANDS && i == 6)
470 		   || (code == ASM_INPUT && i == 1))
471 		  && XINT (x, i) == XINT (y, i))
472 		break;
473 #endif
474 	      return 0;
475 	    }
476 	  break;
477 
478 	case 'V':
479 	case 'E':
480 	  /* Two vectors must have the same length.  */
481 	  if (XVECLEN (x, i) != XVECLEN (y, i))
482 	    return 0;
483 
484 	  /* And the corresponding elements must match.  */
485 	  for (j = 0; j < XVECLEN (x, i); j++)
486 	    if (rtx_equal_p_cb (XVECEXP (x, i, j),
487                                 XVECEXP (y, i, j), cb) == 0)
488 	      return 0;
489 	  break;
490 
491 	case 'e':
492 	  if (rtx_equal_p_cb (XEXP (x, i), XEXP (y, i), cb) == 0)
493 	    return 0;
494 	  break;
495 
496 	case 'S':
497 	case 's':
498 	  if ((XSTR (x, i) || XSTR (y, i))
499 	      && (! XSTR (x, i) || ! XSTR (y, i)
500 		  || strcmp (XSTR (x, i), XSTR (y, i))))
501 	    return 0;
502 	  break;
503 
504 	case 'u':
505 	  /* These are just backpointers, so they don't matter.  */
506 	  break;
507 
508 	case '0':
509 	case 't':
510 	  break;
511 
512 	  /* It is believed that rtx's at this level will never
513 	     contain anything but integers and other rtx's,
514 	     except for within LABEL_REFs and SYMBOL_REFs.  */
515 	default:
516 	  gcc_unreachable ();
517 	}
518     }
519   return 1;
520 }
521 
522 /* Return 1 if X and Y are identical-looking rtx's.
523    This is the Lisp function EQUAL for rtx arguments.
524    Whenever changing this function check if rtx_equal_p_cb above doesn't need
525    changing as well.  */
526 
527 int
528 rtx_equal_p (const_rtx x, const_rtx y)
529 {
530   int i;
531   int j;
532   enum rtx_code code;
533   const char *fmt;
534 
535   if (x == y)
536     return 1;
537   if (x == 0 || y == 0)
538     return 0;
539 
540   code = GET_CODE (x);
541   /* Rtx's of different codes cannot be equal.  */
542   if (code != GET_CODE (y))
543     return 0;
544 
545   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
546      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
547 
548   if (GET_MODE (x) != GET_MODE (y))
549     return 0;
550 
551   /* MEMs referring to different address space are not equivalent.  */
552   if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
553     return 0;
554 
555   /* Some RTL can be compared nonrecursively.  */
556   switch (code)
557     {
558     case REG:
559       return (REGNO (x) == REGNO (y));
560 
561     case LABEL_REF:
562       return LABEL_REF_LABEL (x) == LABEL_REF_LABEL (y);
563 
564     case SYMBOL_REF:
565       return XSTR (x, 0) == XSTR (y, 0);
566 
567     case DEBUG_EXPR:
568     case VALUE:
569     case SCRATCH:
570     CASE_CONST_UNIQUE:
571       return 0;
572 
573     case DEBUG_IMPLICIT_PTR:
574       return DEBUG_IMPLICIT_PTR_DECL (x)
575 	     == DEBUG_IMPLICIT_PTR_DECL (y);
576 
577     case DEBUG_PARAMETER_REF:
578       return DEBUG_PARAMETER_REF_DECL (x)
579 	     == DEBUG_PARAMETER_REF_DECL (y);
580 
581     case ENTRY_VALUE:
582       return rtx_equal_p (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y));
583 
584     default:
585       break;
586     }
587 
588   /* Compare the elements.  If any pair of corresponding elements
589      fail to match, return 0 for the whole thing.  */
590 
591   fmt = GET_RTX_FORMAT (code);
592   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
593     {
594       switch (fmt[i])
595 	{
596 	case 'w':
597 	  if (XWINT (x, i) != XWINT (y, i))
598 	    return 0;
599 	  break;
600 
601 	case 'n':
602 	case 'i':
603 	  if (XINT (x, i) != XINT (y, i))
604 	    {
605 #ifndef GENERATOR_FILE
606 	      if (((code == ASM_OPERANDS && i == 6)
607 		   || (code == ASM_INPUT && i == 1))
608 		  && XINT (x, i) == XINT (y, i))
609 		break;
610 #endif
611 	      return 0;
612 	    }
613 	  break;
614 
615 	case 'V':
616 	case 'E':
617 	  /* Two vectors must have the same length.  */
618 	  if (XVECLEN (x, i) != XVECLEN (y, i))
619 	    return 0;
620 
621 	  /* And the corresponding elements must match.  */
622 	  for (j = 0; j < XVECLEN (x, i); j++)
623 	    if (rtx_equal_p (XVECEXP (x, i, j),  XVECEXP (y, i, j)) == 0)
624 	      return 0;
625 	  break;
626 
627 	case 'e':
628 	  if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0)
629 	    return 0;
630 	  break;
631 
632 	case 'S':
633 	case 's':
634 	  if ((XSTR (x, i) || XSTR (y, i))
635 	      && (! XSTR (x, i) || ! XSTR (y, i)
636 		  || strcmp (XSTR (x, i), XSTR (y, i))))
637 	    return 0;
638 	  break;
639 
640 	case 'u':
641 	  /* These are just backpointers, so they don't matter.  */
642 	  break;
643 
644 	case '0':
645 	case 't':
646 	  break;
647 
648 	  /* It is believed that rtx's at this level will never
649 	     contain anything but integers and other rtx's,
650 	     except for within LABEL_REFs and SYMBOL_REFs.  */
651 	default:
652 	  gcc_unreachable ();
653 	}
654     }
655   return 1;
656 }
657 
658 void
659 dump_rtx_statistics (void)
660 {
661   int i;
662   int total_counts = 0;
663   int total_sizes = 0;
664 
665   if (! GATHER_STATISTICS)
666     {
667       fprintf (stderr, "No RTX statistics\n");
668       return;
669     }
670 
671   fprintf (stderr, "\nRTX Kind               Count      Bytes\n");
672   fprintf (stderr, "---------------------------------------\n");
673   for (i = 0; i < LAST_AND_UNUSED_RTX_CODE; i++)
674     if (rtx_alloc_counts[i])
675       {
676         fprintf (stderr, "%-20s %7d %10d\n", GET_RTX_NAME (i),
677                  rtx_alloc_counts[i], rtx_alloc_sizes[i]);
678         total_counts += rtx_alloc_counts[i];
679         total_sizes += rtx_alloc_sizes[i];
680       }
681   if (rtvec_alloc_counts)
682     {
683       fprintf (stderr, "%-20s %7d %10d\n", "rtvec",
684                rtvec_alloc_counts, rtvec_alloc_sizes);
685       total_counts += rtvec_alloc_counts;
686       total_sizes += rtvec_alloc_sizes;
687     }
688   fprintf (stderr, "---------------------------------------\n");
689   fprintf (stderr, "%-20s %7d %10d\n",
690            "Total", total_counts, total_sizes);
691   fprintf (stderr, "---------------------------------------\n");
692 }
693 
694 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
695 void
696 rtl_check_failed_bounds (const_rtx r, int n, const char *file, int line,
697 			 const char *func)
698 {
699   internal_error
700     ("RTL check: access of elt %d of '%s' with last elt %d in %s, at %s:%d",
701      n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r)) - 1,
702      func, trim_filename (file), line);
703 }
704 
705 void
706 rtl_check_failed_type1 (const_rtx r, int n, int c1, const char *file, int line,
707 			const char *func)
708 {
709   internal_error
710     ("RTL check: expected elt %d type '%c', have '%c' (rtx %s) in %s, at %s:%d",
711      n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
712      func, trim_filename (file), line);
713 }
714 
715 void
716 rtl_check_failed_type2 (const_rtx r, int n, int c1, int c2, const char *file,
717 			int line, const char *func)
718 {
719   internal_error
720     ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s) in %s, at %s:%d",
721      n, c1, c2, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
722      func, trim_filename (file), line);
723 }
724 
725 void
726 rtl_check_failed_code1 (const_rtx r, enum rtx_code code, const char *file,
727 			int line, const char *func)
728 {
729   internal_error ("RTL check: expected code '%s', have '%s' in %s, at %s:%d",
730 		  GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)), func,
731 		  trim_filename (file), line);
732 }
733 
734 void
735 rtl_check_failed_code2 (const_rtx r, enum rtx_code code1, enum rtx_code code2,
736 			const char *file, int line, const char *func)
737 {
738   internal_error
739     ("RTL check: expected code '%s' or '%s', have '%s' in %s, at %s:%d",
740      GET_RTX_NAME (code1), GET_RTX_NAME (code2), GET_RTX_NAME (GET_CODE (r)),
741      func, trim_filename (file), line);
742 }
743 
744 void
745 rtl_check_failed_code_mode (const_rtx r, enum rtx_code code, machine_mode mode,
746 			    bool not_mode, const char *file, int line,
747 			    const char *func)
748 {
749   internal_error ((not_mode
750 		   ? ("RTL check: expected code '%s' and not mode '%s', "
751 		      "have code '%s' and mode '%s' in %s, at %s:%d")
752 		   : ("RTL check: expected code '%s' and mode '%s', "
753 		      "have code '%s' and mode '%s' in %s, at %s:%d")),
754 		  GET_RTX_NAME (code), GET_MODE_NAME (mode),
755 		  GET_RTX_NAME (GET_CODE (r)), GET_MODE_NAME (GET_MODE (r)),
756 		  func, trim_filename (file), line);
757 }
758 
759 /* Report that line LINE of FILE tried to access the block symbol fields
760    of a non-block symbol.  FUNC is the function that contains the line.  */
761 
762 void
763 rtl_check_failed_block_symbol (const char *file, int line, const char *func)
764 {
765   internal_error
766     ("RTL check: attempt to treat non-block symbol as a block symbol "
767      "in %s, at %s:%d", func, trim_filename (file), line);
768 }
769 
770 /* XXX Maybe print the vector?  */
771 void
772 cwi_check_failed_bounds (const_rtx x, int n, const char *file, int line,
773 			 const char *func)
774 {
775   internal_error
776     ("RTL check: access of hwi elt %d of vector with last elt %d in %s, at %s:%d",
777      n, CWI_GET_NUM_ELEM (x) - 1, func, trim_filename (file), line);
778 }
779 
780 /* XXX Maybe print the vector?  */
781 void
782 rtvec_check_failed_bounds (const_rtvec r, int n, const char *file, int line,
783 			   const char *func)
784 {
785   internal_error
786     ("RTL check: access of elt %d of vector with last elt %d in %s, at %s:%d",
787      n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);
788 }
789 #endif /* ENABLE_RTL_CHECKING */
790 
791 #if defined ENABLE_RTL_FLAG_CHECKING
792 void
793 rtl_check_failed_flag (const char *name, const_rtx r, const char *file,
794 		       int line, const char *func)
795 {
796   internal_error
797     ("RTL flag check: %s used with unexpected rtx code '%s' in %s, at %s:%d",
798      name, GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);
799 }
800 #endif /* ENABLE_RTL_FLAG_CHECKING */
801