1 /* Allocate and read RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999
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. */
30 #define obstack_chunk_alloc xmalloc
31 #define obstack_chunk_free free
34 #define DIR_SEPARATOR '/'
37 /* Obstack used for allocating RTL objects.
38 Between functions, this is the permanent_obstack.
39 While parsing and expanding a function, this is maybepermanent_obstack
40 so we can save it if it is an inline function.
41 During optimization and output, this is function_obstack. */
43 extern struct obstack
*rtl_obstack
;
45 /* Calculate the format for CONST_DOUBLE. This depends on the relative
46 widths of HOST_WIDE_INT and REAL_VALUE_TYPE.
48 We need to go out to e0wwwww, since REAL_ARITHMETIC assumes 16-bits
49 per element in REAL_VALUE_TYPE.
51 This is duplicated in gengenrtl.c.
53 A number of places assume that there are always at least two 'w'
54 slots in a CONST_DOUBLE, so we provide them even if one would suffice. */
56 #ifdef REAL_ARITHMETIC
57 #if LONG_DOUBLE_TYPE_SIZE == 96
58 #define REAL_WIDTH (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
59 #elif LONG_DOUBLE_TYPE_SIZE == 128
60 #define REAL_WIDTH (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
61 #elif HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
62 #define REAL_WIDTH (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
64 #endif /* REAL_ARITHMETIC */
67 #if HOST_BITS_PER_WIDE_INT*2 >= LONG_DOUBLE_TYPE_SIZE
69 #elif HOST_BITS_PER_WIDE_INT*3 >= LONG_DOUBLE_TYPE_SIZE
71 #elif HOST_BITS_PER_WIDE_INT*4 >= LONG_DOUBLE_TYPE_SIZE
74 #endif /* REAL_WIDTH */
77 #define CONST_DOUBLE_FORMAT "e0ww"
79 #define CONST_DOUBLE_FORMAT "e0ww"
81 #define CONST_DOUBLE_FORMAT "e0www"
83 #define CONST_DOUBLE_FORMAT "e0wwww"
85 #define CONST_DOUBLE_FORMAT "e0wwwww"
87 #define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */
90 /* Indexed by rtx code, gives number of operands for an rtx with that code.
91 Does NOT include rtx header data (code and links). */
93 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) sizeof FORMAT - 1 ,
95 const int rtx_length
[NUM_RTX_CODE
+ 1] = {
101 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string. */
103 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME ,
105 const char * const rtx_name
[] = {
106 #include "rtl.def" /* rtl expressions are documented here */
111 /* Indexed by machine mode, gives the name of that machine mode.
112 This name does not include the letters "mode". */
114 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME,
116 const char * const mode_name
[(int) MAX_MACHINE_MODE
+ 1] = {
117 #include "machmode.def"
118 /* Add an extra field to avoid a core dump if someone tries to convert
119 MAX_MACHINE_MODE to a string. */
125 /* Indexed by machine mode, gives the length of the mode, in bytes.
126 GET_MODE_CLASS uses this. */
128 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS,
130 const enum mode_class mode_class
[(int) MAX_MACHINE_MODE
] = {
131 #include "machmode.def"
136 /* Indexed by machine mode, gives the length of the mode, in bytes.
137 GET_MODE_SIZE uses this. */
139 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE,
141 const int mode_size
[(int) MAX_MACHINE_MODE
] = {
142 #include "machmode.def"
147 /* Indexed by machine mode, gives the length of the mode's subunit.
148 GET_MODE_UNIT_SIZE uses this. */
150 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT,
152 const int mode_unit_size
[(int) MAX_MACHINE_MODE
] = {
153 #include "machmode.def" /* machine modes are documented here */
158 /* Indexed by machine mode, gives next wider natural mode
159 (QI -> HI -> SI -> DI, etc.) Widening multiply instructions
162 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
163 (unsigned char) WIDER,
165 const unsigned char mode_wider_mode
[(int) MAX_MACHINE_MODE
] = {
166 #include "machmode.def" /* machine modes are documented here */
171 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
172 ((SIZE) * BITS_PER_UNIT >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (SIZE) * BITS_PER_UNIT) - 1,
174 /* Indexed by machine mode, gives mask of significant bits in mode. */
176 const unsigned HOST_WIDE_INT mode_mask_array
[(int) MAX_MACHINE_MODE
] = {
177 #include "machmode.def"
180 /* Indexed by mode class, gives the narrowest mode for each class.
181 The Q modes are always of width 1 (2 for complex) - it is impossible
182 for any mode to be narrower. */
184 const enum machine_mode class_narrowest_mode
[(int) MAX_MODE_CLASS
] = {
185 /* MODE_RANDOM */ VOIDmode
,
186 /* MODE_INT */ QImode
,
187 /* MODE_FLOAT */ QFmode
,
188 /* MODE_PARTIAL_INT */ PQImode
,
189 /* MODE_CC */ CCmode
,
190 /* MODE_COMPLEX_INT */ CQImode
,
191 /* MODE_COMPLEX_FLOAT */ QCmode
195 /* Indexed by rtx code, gives a sequence of operand-types for
196 rtx's of that code. The sequence is a C string in which
197 each character describes one operand. */
199 const char * const rtx_format
[] = {
201 can cause a warning message
202 "0" field is unused (or used in a phase-dependent manner)
206 "n" like "i", but prints entries from `note_insn_name'
207 "w" an integer of width HOST_BITS_PER_WIDE_INT
209 "s" a pointer to a string
211 "S" like "s", but optional:
212 the containing rtx may end before this operand
213 "e" a pointer to an rtl expression
214 prints the expression
215 "E" a pointer to a vector that points to a number of rtl expressions
216 prints a list of the rtl expressions
217 "V" like "E", but optional:
218 the containing rtx may end before this operand
219 "u" a pointer to another insn
220 prints the uid of the insn.
221 "b" is a pointer to a bitmap header.
222 "t" is a tree pointer. */
224 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT ,
225 #include "rtl.def" /* rtl expressions are defined here */
229 /* Indexed by rtx code, gives a character representing the "class" of
230 that rtx code. See rtl.def for documentation on the defined classes. */
232 const char rtx_class
[] = {
233 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS,
234 #include "rtl.def" /* rtl expressions are defined here */
238 /* Names for kinds of NOTEs and REG_NOTEs. */
240 const char * const note_insn_name
[] = { 0 , "NOTE_INSN_DELETED",
241 "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END",
242 "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END",
243 "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP",
244 "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP",
245 "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG",
246 "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG",
247 "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END",
248 "NOTE_REPEATED_LINE_NUMBER", "NOTE_INSN_RANGE_START",
249 "NOTE_INSN_RANGE_END", "NOTE_INSN_LIVE",
250 "NOTE_INSN_BASIC_BLOCK" };
252 const char * const reg_note_name
[] = { "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_WAS_0",
253 "REG_EQUAL", "REG_RETVAL", "REG_LIBCALL",
254 "REG_NONNEG", "REG_NO_CONFLICT", "REG_UNUSED",
255 "REG_CC_SETTER", "REG_CC_USER", "REG_LABEL",
256 "REG_DEP_ANTI", "REG_DEP_OUTPUT", "REG_BR_PROB",
257 "REG_EXEC_COUNT", "REG_NOALIAS", "REG_SAVE_AREA",
258 "REG_BR_PRED", "REG_EH_CONTEXT",
259 "REG_FRAME_RELATED_EXPR", "REG_EH_REGION",
260 "REG_EH_RETHROW", "REG_SAVE_NOTE" };
262 static void fatal_with_file_and_line
PVPROTO((FILE *, const char *, ...))
264 static void fatal_expected_char
PROTO((FILE *, int, int)) ATTRIBUTE_NORETURN
;
265 static void read_name
PROTO((char *, FILE *));
266 static const char *trim_filename
PROTO((const char *));
268 /* Allocate an rtx vector of N elements.
269 Store the length, and initialize all elements to zero. */
278 rt
= ggc_alloc_rtvec (n
);
283 rt
= (rtvec
) obstack_alloc (rtl_obstack
,
284 sizeof (struct rtvec_def
)
285 + (( n
- 1) * sizeof (rtx
)));
287 /* clear out the vector */
288 for (i
= 0; i
< n
; i
++)
292 PUT_NUM_ELEM (rt
, n
);
296 /* Allocate an rtx of code CODE. The CODE is stored in the rtx;
297 all the rest is initialized to zero. */
306 rt
= ggc_alloc_rtx (GET_RTX_LENGTH (code
));
309 register struct obstack
*ob
= rtl_obstack
;
310 register int nelts
= GET_RTX_LENGTH (code
);
311 register int length
= sizeof (struct rtx_def
)
312 + (nelts
- 1) * sizeof (rtunion
);
314 /* This function is called more than any other in GCC, so we
315 manipulate the obstack directly.
317 Even though rtx objects are word aligned, we may be sharing
318 an obstack with tree nodes, which may have to be double-word
319 aligned. So align our length to the alignment mask in the
322 length
= (length
+ ob
->alignment_mask
) & ~ ob
->alignment_mask
;
324 if (ob
->chunk_limit
- ob
->next_free
< length
)
325 _obstack_newchunk (ob
, length
);
326 rt
= (rtx
)ob
->object_base
;
327 ob
->next_free
+= length
;
328 ob
->object_base
= ob
->next_free
;
330 /* We want to clear everything up to the FLD array. Normally,
331 this is one int, but we don't want to assume that and it
332 isn't very portable anyway; this is. */
334 memset (rt
, 0, sizeof (struct rtx_def
) - sizeof (rtunion
));
341 /* Free the rtx X and all RTL allocated since X. */
348 obstack_free (rtl_obstack
, x
);
351 /* Create a new copy of an rtx.
352 Recursively copies the operands of the rtx,
353 except for those few rtx codes that are sharable. */
361 register RTX_CODE code
;
362 register const char *format_ptr
;
364 code
= GET_CODE (orig
);
377 /* SCRATCH must be shared because they represent distinct values. */
382 /* CONST can be shared if it contains a SYMBOL_REF. If it contains
383 a LABEL_REF, it isn't sharable. */
384 if (GET_CODE (XEXP (orig
, 0)) == PLUS
385 && GET_CODE (XEXP (XEXP (orig
, 0), 0)) == SYMBOL_REF
386 && GET_CODE (XEXP (XEXP (orig
, 0), 1)) == CONST_INT
)
390 /* A MEM with a constant address is not sharable. The problem is that
391 the constant address may need to be reloaded. If the mem is shared,
392 then reloading one copy of this mem will cause all copies to appear
393 to have been reloaded. */
399 copy
= rtx_alloc (code
);
401 /* Copy the various flags, and other information. We assume that
402 all fields need copying, and then clear the fields that should
403 not be copied. That is the sensible default behavior, and forces
404 us to explicitly document why we are *not* copying a flag. */
405 memcpy (copy
, orig
, sizeof (struct rtx_def
) - sizeof (rtunion
));
407 /* We do not copy the USED flag, which is used as a mark bit during
408 walks over the RTL. */
411 /* We do not copy JUMP, CALL, or FRAME_RELATED for INSNs. */
412 if (GET_RTX_CLASS (code
) == 'i')
416 copy
->frame_related
= 0;
419 format_ptr
= GET_RTX_FORMAT (GET_CODE (copy
));
421 for (i
= 0; i
< GET_RTX_LENGTH (GET_CODE (copy
)); i
++)
423 copy
->fld
[i
] = orig
->fld
[i
];
424 switch (*format_ptr
++)
427 if (XEXP (orig
, i
) != NULL
)
428 XEXP (copy
, i
) = copy_rtx (XEXP (orig
, i
));
433 if (XVEC (orig
, i
) != NULL
)
435 XVEC (copy
, i
) = rtvec_alloc (XVECLEN (orig
, i
));
436 for (j
= 0; j
< XVECLEN (copy
, i
); j
++)
437 XVECEXP (copy
, i
, j
) = copy_rtx (XVECEXP (orig
, i
, j
));
443 bitmap new_bits
= BITMAP_OBSTACK_ALLOC (rtl_obstack
);
444 bitmap_copy (new_bits
, XBITMAP (orig
, i
));
445 XBITMAP (copy
, i
) = new_bits
;
456 /* These are left unchanged. */
466 /* Similar to `copy_rtx' except that if MAY_SHARE is present, it is
467 placed in the result directly, rather than being copied. */
470 copy_most_rtx (orig
, may_share
)
472 register rtx may_share
;
476 register RTX_CODE code
;
477 register const char *format_ptr
;
479 if (orig
== may_share
)
482 code
= GET_CODE (orig
);
499 copy
= rtx_alloc (code
);
500 PUT_MODE (copy
, GET_MODE (orig
));
501 copy
->in_struct
= orig
->in_struct
;
502 copy
->volatil
= orig
->volatil
;
503 copy
->unchanging
= orig
->unchanging
;
504 copy
->integrated
= orig
->integrated
;
506 format_ptr
= GET_RTX_FORMAT (GET_CODE (copy
));
508 for (i
= 0; i
< GET_RTX_LENGTH (GET_CODE (copy
)); i
++)
510 switch (*format_ptr
++)
513 XEXP (copy
, i
) = XEXP (orig
, i
);
514 if (XEXP (orig
, i
) != NULL
&& XEXP (orig
, i
) != may_share
)
515 XEXP (copy
, i
) = copy_most_rtx (XEXP (orig
, i
), may_share
);
519 XEXP (copy
, i
) = XEXP (orig
, i
);
524 XVEC (copy
, i
) = XVEC (orig
, i
);
525 if (XVEC (orig
, i
) != NULL
)
527 XVEC (copy
, i
) = rtvec_alloc (XVECLEN (orig
, i
));
528 for (j
= 0; j
< XVECLEN (copy
, i
); j
++)
530 = copy_most_rtx (XVECEXP (orig
, i
, j
), may_share
);
535 XWINT (copy
, i
) = XWINT (orig
, i
);
540 XINT (copy
, i
) = XINT (orig
, i
);
544 XTREE (copy
, i
) = XTREE (orig
, i
);
549 XSTR (copy
, i
) = XSTR (orig
, i
);
553 /* Copy this through the wide int field; that's safest. */
554 X0WINT (copy
, i
) = X0WINT (orig
, i
);
564 /* Create a new copy of an rtx. Only copy just one level. */
566 shallow_copy_rtx (orig
)
570 register RTX_CODE code
= GET_CODE (orig
);
571 register rtx copy
= rtx_alloc (code
);
573 PUT_MODE (copy
, GET_MODE (orig
));
574 copy
->in_struct
= orig
->in_struct
;
575 copy
->volatil
= orig
->volatil
;
576 copy
->unchanging
= orig
->unchanging
;
577 copy
->integrated
= orig
->integrated
;
579 for (i
= 0; i
< GET_RTX_LENGTH (code
); i
++)
580 copy
->fld
[i
] = orig
->fld
[i
];
585 /* Subroutines of read_rtx. */
587 /* The current line number for the file. */
588 int read_rtx_lineno
= 1;
590 /* The filename for aborting with file and line. */
591 const char *read_rtx_filename
= "<unknown>";
594 fatal_with_file_and_line
VPROTO((FILE *infile
, const char *msg
, ...))
596 #ifndef ANSI_PROTOTYPES
607 #ifndef ANSI_PROTOTYPES
608 infile
= va_arg (ap
, FILE *);
609 msg
= va_arg (ap
, const char *);
612 fprintf (stderr
, "%s:%d: ", read_rtx_filename
, read_rtx_lineno
);
613 vfprintf (stderr
, msg
, ap
);
616 /* Gather some following context. */
617 for (i
= 0; i
< sizeof(context
)-1; ++i
)
622 if (c
== '\r' || c
== '\n')
628 fprintf (stderr
, "%s:%d: following context is `%s'\n",
629 read_rtx_filename
, read_rtx_lineno
, context
);
635 /* Dump code after printing a message. Used when read_rtx finds
639 fatal_expected_char (infile
, expected_c
, actual_c
)
641 int expected_c
, actual_c
;
643 fatal_with_file_and_line (infile
, "expected character `%c', found `%c'",
644 expected_c
, actual_c
);
647 /* Read chars from INFILE until a non-whitespace char
648 and return that. Comments, both Lisp style and C style,
649 are treated as whitespace.
650 Tools such as genflags use this function. */
653 read_skip_spaces (infile
)
666 case ' ': case '\t': case '\f': case '\r':
672 while (c
!= '\n' && c
!= EOF
);
681 fatal_expected_char (infile
, '*', c
);
684 while ((c
= getc (infile
)) && c
!= EOF
)
688 else if (prevc
== '*' && c
== '/')
701 /* Read an rtx code name into the buffer STR[].
702 It is terminated by any of the punctuation chars of rtx printed syntax. */
705 read_name (str
, infile
)
712 c
= read_skip_spaces(infile
);
717 if (c
== ' ' || c
== '\n' || c
== '\t' || c
== '\f')
719 if (c
== ':' || c
== ')' || c
== ']' || c
== '"' || c
== '/'
720 || c
== '(' || c
== '[')
729 fatal_with_file_and_line (infile
, "missing name or number");
736 /* Provide a version of a function to read a long long if the system does
738 #if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ)
744 HOST_WIDE_INT tmp_wide
;
756 HOST_WIDE_INT new_wide
= tmp_wide
*10 + (*p
- '0');
757 if (new_wide
< tmp_wide
)
759 /* Return INT_MAX equiv on overflow. */
760 tmp_wide
= (~(unsigned HOST_WIDE_INT
)0) >> 1;
768 tmp_wide
= -tmp_wide
;
773 /* Read an rtx in printed representation from INFILE
774 and return an actual rtx in core constructed accordingly.
775 read_rtx is not used in the compiler proper, but rather in
776 the utilities gen*.c that construct C code from machine descriptions. */
782 register int i
, j
, list_counter
;
784 register const char *format_ptr
;
785 /* tmp_char is a buffer used for reading decimal integers
786 and names of rtx types and machine modes.
787 Therefore, 256 must be enough. */
792 HOST_WIDE_INT tmp_wide
;
794 /* Linked list structure for making RTXs: */
797 struct rtx_list
*next
;
798 rtx value
; /* Value of this node. */
801 c
= read_skip_spaces (infile
); /* Should be open paren. */
803 fatal_expected_char (infile
, '(', c
);
805 read_name (tmp_char
, infile
);
809 for (i
=0; i
< NUM_RTX_CODE
; i
++) /* @@ might speed this search up */
811 if (!(strcmp (tmp_char
, GET_RTX_NAME (i
))))
813 tmp_code
= (RTX_CODE
) i
; /* get value for name */
817 if (tmp_code
== UNKNOWN
)
820 "Unknown rtx read in rtl.read_rtx(). Code name was %s .",
823 /* (NIL) stands for an expression that isn't there. */
826 /* Discard the closeparen. */
827 while ((c
= getc (infile
)) && c
!= ')');
831 return_rtx
= rtx_alloc (tmp_code
); /* if we end up with an insn expression
832 then we free this space below. */
833 format_ptr
= GET_RTX_FORMAT (GET_CODE (return_rtx
));
835 /* If what follows is `: mode ', read it and
836 store the mode in the rtx. */
838 i
= read_skip_spaces (infile
);
842 read_name (tmp_char
, infile
);
843 for (k
= 0; k
< NUM_MACHINE_MODES
; k
++)
844 if (!strcmp (GET_MODE_NAME (k
), tmp_char
))
847 PUT_MODE (return_rtx
, (enum machine_mode
) k
);
852 for (i
= 0; i
< GET_RTX_LENGTH (GET_CODE (return_rtx
)); i
++)
853 switch (*format_ptr
++)
855 /* 0 means a field for internal use only.
856 Don't expect it to be present in the input. */
862 XEXP (return_rtx
, i
) = read_rtx (infile
);
866 /* 'V' is an optional vector: if a closeparen follows,
867 just store NULL for this element. */
868 c
= read_skip_spaces (infile
);
872 XVEC (return_rtx
, i
) = 0;
875 /* Now process the vector. */
879 register struct rtx_list
*next_rtx
, *rtx_list_link
;
880 struct rtx_list
*list_rtx
= NULL
;
882 c
= read_skip_spaces (infile
);
884 fatal_expected_char (infile
, '[', c
);
886 /* add expressions to a list, while keeping a count */
889 while ((c
= read_skip_spaces (infile
)) && c
!= ']')
893 rtx_list_link
= (struct rtx_list
*)
894 alloca (sizeof (struct rtx_list
));
895 rtx_list_link
->value
= read_rtx (infile
);
897 list_rtx
= rtx_list_link
;
899 next_rtx
->next
= rtx_list_link
;
900 next_rtx
= rtx_list_link
;
901 rtx_list_link
->next
= 0;
903 /* get vector length and allocate it */
904 XVEC (return_rtx
, i
) = (list_counter
905 ? rtvec_alloc (list_counter
) : NULL_RTVEC
);
906 if (list_counter
> 0)
909 for (j
= 0; j
< list_counter
; j
++,
910 next_rtx
= next_rtx
->next
)
911 XVECEXP (return_rtx
, i
, j
) = next_rtx
->value
;
913 /* close bracket gotten */
918 /* 'S' is an optional string: if a closeparen follows,
919 just store NULL for this element. */
920 c
= read_skip_spaces (infile
);
924 XSTR (return_rtx
, i
) = 0;
931 register char *stringbuf
;
933 c
= read_skip_spaces (infile
);
937 c
= read_skip_spaces (infile
);
940 fatal_expected_char (infile
, '"', c
);
944 c
= getc (infile
); /* Read the string */
949 c
= getc (infile
); /* Read the string */
950 /* \; makes stuff for a C string constant containing
954 obstack_grow (rtl_obstack
, "\\n\\t", 4);
963 obstack_1grow (rtl_obstack
, c
);
966 obstack_1grow (rtl_obstack
, 0);
967 stringbuf
= (char *) obstack_finish (rtl_obstack
);
971 c
= read_skip_spaces (infile
);
973 fatal_expected_char (infile
, ')', c
);
975 XSTR (return_rtx
, i
) = stringbuf
;
980 read_name (tmp_char
, infile
);
981 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
982 tmp_wide
= atoi (tmp_char
);
984 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
985 tmp_wide
= atol (tmp_char
);
987 /* Prefer atoll over atoq, since the former is in the ISO C9X draft.
988 But prefer not to use our hand-rolled function above either. */
989 #if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ)
990 tmp_wide
= atoll (tmp_char
);
992 tmp_wide
= atoq (tmp_char
);
996 XWINT (return_rtx
, i
) = tmp_wide
;
1001 read_name (tmp_char
, infile
);
1002 tmp_int
= atoi (tmp_char
);
1003 XINT (return_rtx
, i
) = tmp_int
;
1008 "switch format wrong in rtl.read_rtx(). format was: %c.\n",
1010 fprintf (stderr
, "\tfile position: %ld\n", ftell (infile
));
1014 c
= read_skip_spaces (infile
);
1016 fatal_expected_char (infile
, ')', c
);
1021 #if defined ENABLE_CHECKING && HAVE_GCC_VERSION(2,7)
1023 rtl_check_failed_bounds (r
, n
, file
, line
, func
)
1030 error ("RTL check: access of elt %d of `%s' with last elt %d",
1031 n
, GET_RTX_NAME (GET_CODE (r
)), GET_RTX_LENGTH (GET_CODE (r
))-1);
1032 fancy_abort (file
, line
, func
);
1036 rtl_check_failed_type1 (r
, n
, c1
, file
, line
, func
)
1044 error ("RTL check: expected elt %d type '%c', have '%c' (rtx %s)",
1045 n
, c1
, GET_RTX_FORMAT (GET_CODE (r
))[n
], GET_RTX_NAME (GET_CODE (r
)));
1046 fancy_abort (file
, line
, func
);
1050 rtl_check_failed_type2 (r
, n
, c1
, c2
, file
, line
, func
)
1059 error ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s)",
1061 GET_RTX_FORMAT (GET_CODE (r
))[n
], GET_RTX_NAME (GET_CODE(r
)));
1062 fancy_abort (file
, line
, func
);
1066 rtl_check_failed_code1 (r
, code
, file
, line
, func
)
1073 error ("RTL check: expected code `%s', have `%s'",
1074 GET_RTX_NAME (code
), GET_RTX_NAME (GET_CODE (r
)));
1075 fancy_abort (file
, line
, func
);
1079 rtl_check_failed_code2 (r
, code1
, code2
, file
, line
, func
)
1081 enum rtx_code code1
, code2
;
1086 error ("RTL check: expected code `%s' or `%s', have `%s'",
1087 GET_RTX_NAME (code1
), GET_RTX_NAME (code2
),
1088 GET_RTX_NAME (GET_CODE (r
)));
1089 fancy_abort (file
, line
, func
);
1092 /* XXX Maybe print the vector? */
1094 rtvec_check_failed_bounds (r
, n
, file
, line
, func
)
1101 error ("RTL check: access of elt %d of vector with last elt %d",
1102 n
, GET_NUM_ELEM (r
)-1);
1103 fancy_abort (file
, line
, func
);
1105 #endif /* ENABLE_CHECKING */
1107 /* These are utility functions used by fatal-error functions all over the
1108 code. rtl.c happens to be linked by all the programs that need them,
1109 so these are here. In the future we want to break out all error handling
1110 to its own module. */
1112 /* Given a partial pathname as input, return another pathname that
1113 shares no directory elements with the pathname of __FILE__. This
1114 is used by fancy_abort() to print `Internal compiler error in expr.c'
1115 instead of `Internal compiler error in ../../egcs/gcc/expr.c'. */
1117 trim_filename (name
)
1120 static const char this_file
[] = __FILE__
;
1121 const char *p
= name
, *q
= this_file
;
1123 while (*p
== *q
&& *p
!= 0 && *q
!= 0) p
++, q
++;
1124 while (p
> name
&& p
[-1] != DIR_SEPARATOR
1125 #ifdef DIR_SEPARATOR_2
1126 && p
[-1] != DIR_SEPARATOR_2
1134 /* Report an internal compiler error in a friendly manner and without
1137 extern void fatal
PVPROTO ((const char *, ...))
1138 ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN
;
1141 fancy_abort (file
, line
, function
)
1144 const char *function
;
1146 if (function
== NULL
)
1149 "Internal compiler error in `%s', at %s:%d\n\
1150 Please submit a full bug report.\n\
1151 See <URL:http://www.gnu.org/software/gcc/faq.html#bugreport> \
1153 function
, trim_filename (file
), line
);