1 /* Allocate and read RTL for GNU C Compiler.
2 Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000
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. */
32 #define obstack_chunk_alloc xmalloc
33 #define obstack_chunk_free free
35 /* Obstack used for allocating RTL objects.
36 Between functions, this is the permanent_obstack.
37 While parsing and expanding a function, this is maybepermanent_obstack
38 so we can save it if it is an inline function.
39 During optimization and output, this is function_obstack. */
41 extern struct obstack
*rtl_obstack
;
43 /* Calculate the format for CONST_DOUBLE. This depends on the relative
44 widths of HOST_WIDE_INT and REAL_VALUE_TYPE.
46 We need to go out to e0wwwww, since REAL_ARITHMETIC assumes 16-bits
47 per element in REAL_VALUE_TYPE.
49 This is duplicated in gengenrtl.c.
51 A number of places assume that there are always at least two 'w'
52 slots in a CONST_DOUBLE, so we provide them even if one would suffice. */
54 #ifdef REAL_ARITHMETIC
55 #if MAX_LONG_DOUBLE_TYPE_SIZE == 96
56 #define REAL_WIDTH (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
57 #elif MAX_LONG_DOUBLE_TYPE_SIZE == 128
58 #define REAL_WIDTH (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
59 #elif HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
60 #define REAL_WIDTH (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
62 #endif /* REAL_ARITHMETIC */
65 #if HOST_BITS_PER_WIDE_INT*2 >= MAX_LONG_DOUBLE_TYPE_SIZE
67 #elif HOST_BITS_PER_WIDE_INT*3 >= MAX_LONG_DOUBLE_TYPE_SIZE
69 #elif HOST_BITS_PER_WIDE_INT*4 >= MAX_LONG_DOUBLE_TYPE_SIZE
72 #endif /* REAL_WIDTH */
75 #define CONST_DOUBLE_FORMAT "e0ww"
77 #define CONST_DOUBLE_FORMAT "e0ww"
79 #define CONST_DOUBLE_FORMAT "e0www"
81 #define CONST_DOUBLE_FORMAT "e0wwww"
83 #define CONST_DOUBLE_FORMAT "e0wwwww"
85 #define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */
88 /* Indexed by rtx code, gives number of operands for an rtx with that code.
89 Does NOT include rtx header data (code and links). */
91 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) sizeof FORMAT - 1 ,
93 const int rtx_length
[NUM_RTX_CODE
+ 1] = {
99 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string. */
101 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME ,
103 const char * const rtx_name
[] = {
104 #include "rtl.def" /* rtl expressions are documented here */
109 /* Indexed by machine mode, gives the name of that machine mode.
110 This name does not include the letters "mode". */
112 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME,
114 const char * const mode_name
[(int) MAX_MACHINE_MODE
+ 1] = {
115 #include "machmode.def"
116 /* Add an extra field to avoid a core dump if someone tries to convert
117 MAX_MACHINE_MODE to a string. */
123 /* Indexed by machine mode, gives the length of the mode, in bytes.
124 GET_MODE_CLASS uses this. */
126 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS,
128 const enum mode_class mode_class
[(int) MAX_MACHINE_MODE
] = {
129 #include "machmode.def"
134 /* Indexed by machine mode, gives the length of the mode, in bytes.
135 GET_MODE_SIZE uses this. */
137 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE,
139 const unsigned int mode_size
[(int) MAX_MACHINE_MODE
] = {
140 #include "machmode.def"
145 /* Indexed by machine mode, gives the length of the mode's subunit.
146 GET_MODE_UNIT_SIZE uses this. */
148 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT,
150 const unsigned int mode_unit_size
[(int) MAX_MACHINE_MODE
] = {
151 #include "machmode.def" /* machine modes are documented here */
156 /* Indexed by machine mode, gives next wider natural mode
157 (QI -> HI -> SI -> DI, etc.) Widening multiply instructions
160 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
161 (unsigned char) WIDER,
163 const unsigned char mode_wider_mode
[(int) MAX_MACHINE_MODE
] = {
164 #include "machmode.def" /* machine modes are documented here */
169 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
170 ((SIZE) * BITS_PER_UNIT >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (SIZE) * BITS_PER_UNIT) - 1,
172 /* Indexed by machine mode, gives mask of significant bits in mode. */
174 const unsigned HOST_WIDE_INT mode_mask_array
[(int) MAX_MACHINE_MODE
] = {
175 #include "machmode.def"
178 /* Indexed by mode class, gives the narrowest mode for each class.
179 The Q modes are always of width 1 (2 for complex) - it is impossible
180 for any mode to be narrower. */
182 const enum machine_mode class_narrowest_mode
[(int) MAX_MODE_CLASS
] = {
183 /* MODE_RANDOM */ VOIDmode
,
184 /* MODE_INT */ QImode
,
185 /* MODE_FLOAT */ QFmode
,
186 /* MODE_PARTIAL_INT */ PQImode
,
187 /* MODE_CC */ CCmode
,
188 /* MODE_COMPLEX_INT */ CQImode
,
189 /* MODE_COMPLEX_FLOAT */ QCmode
193 /* Indexed by rtx code, gives a sequence of operand-types for
194 rtx's of that code. The sequence is a C string in which
195 each character describes one operand. */
197 const char * const rtx_format
[] = {
199 can cause a warning message
200 "0" field is unused (or used in a phase-dependent manner)
204 "n" like "i", but prints entries from `note_insn_name'
205 "w" an integer of width HOST_BITS_PER_WIDE_INT
207 "s" a pointer to a string
209 "S" like "s", but optional:
210 the containing rtx may end before this operand
211 "e" a pointer to an rtl expression
212 prints the expression
213 "E" a pointer to a vector that points to a number of rtl expressions
214 prints a list of the rtl expressions
215 "V" like "E", but optional:
216 the containing rtx may end before this operand
217 "u" a pointer to another insn
218 prints the uid of the insn.
219 "b" is a pointer to a bitmap header.
220 "t" is a tree pointer. */
222 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT ,
223 #include "rtl.def" /* rtl expressions are defined here */
227 /* Indexed by rtx code, gives a character representing the "class" of
228 that rtx code. See rtl.def for documentation on the defined classes. */
230 const char rtx_class
[] = {
231 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS,
232 #include "rtl.def" /* rtl expressions are defined here */
236 /* Names for kinds of NOTEs and REG_NOTEs. */
238 const char * const note_insn_name
[NOTE_INSN_MAX
- NOTE_INSN_BIAS
] =
240 "", "NOTE_INSN_DELETED",
241 "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END",
242 "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END",
243 "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP",
244 "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP",
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_INSN_REPEATED_LINE_NUMBER", "NOTE_INSN_RANGE_BEG",
249 "NOTE_INSN_RANGE_END", "NOTE_INSN_LIVE",
250 "NOTE_INSN_BASIC_BLOCK", "NOTE_INSN_EXPECTED_VALUE"
253 const char * const reg_note_name
[] =
255 "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_EQUAL",
256 "REG_WAS_0", "REG_RETVAL", "REG_LIBCALL", "REG_NONNEG",
257 "REG_NO_CONFLICT", "REG_UNUSED", "REG_CC_SETTER", "REG_CC_USER",
258 "REG_LABEL", "REG_DEP_ANTI", "REG_DEP_OUTPUT", "REG_BR_PROB",
259 "REG_EXEC_COUNT", "REG_NOALIAS", "REG_SAVE_AREA", "REG_BR_PRED",
260 "REG_FRAME_RELATED_EXPR", "REG_EH_CONTEXT", "REG_EH_REGION",
261 "REG_EH_RETHROW", "REG_SAVE_NOTE"
264 static void fatal_with_file_and_line
PARAMS ((FILE *, const char *, ...))
265 ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN
;
266 static void fatal_expected_char
PARAMS ((FILE *, int, int)) ATTRIBUTE_NORETURN
;
267 static void read_name
PARAMS ((char *, FILE *));
268 static const char *trim_filename
PARAMS ((const char *));
270 /* Allocate an rtx vector of N elements.
271 Store the length, and initialize all elements to zero. */
280 rt
= ggc_alloc_rtvec (n
);
285 rt
= (rtvec
) obstack_alloc (rtl_obstack
,
286 sizeof (struct rtvec_def
)
287 + (( n
- 1) * sizeof (rtx
)));
289 /* clear out the vector */
290 for (i
= 0; i
< n
; i
++)
294 PUT_NUM_ELEM (rt
, n
);
298 /* Allocate an rtx of code CODE. The CODE is stored in the rtx;
299 all the rest is initialized to zero. */
308 rt
= ggc_alloc_rtx (GET_RTX_LENGTH (code
));
311 register struct obstack
*ob
= rtl_obstack
;
312 register int nelts
= GET_RTX_LENGTH (code
);
313 register int length
= sizeof (struct rtx_def
)
314 + (nelts
- 1) * sizeof (rtunion
);
316 /* This function is called more than any other in GCC, so we
317 manipulate the obstack directly.
319 Even though rtx objects are word aligned, we may be sharing
320 an obstack with tree nodes, which may have to be double-word
321 aligned. So align our length to the alignment mask in the
324 length
= (length
+ ob
->alignment_mask
) & ~ ob
->alignment_mask
;
326 if (ob
->chunk_limit
- ob
->next_free
< length
)
327 _obstack_newchunk (ob
, length
);
328 rt
= (rtx
)ob
->object_base
;
329 ob
->next_free
+= length
;
330 ob
->object_base
= ob
->next_free
;
332 /* We want to clear everything up to the FLD array. Normally,
333 this is one int, but we don't want to assume that and it
334 isn't very portable anyway; this is. */
336 memset (rt
, 0, sizeof (struct rtx_def
) - sizeof (rtunion
));
343 /* Free the rtx X and all RTL allocated since X. */
350 obstack_free (rtl_obstack
, x
);
353 /* Create a new copy of an rtx.
354 Recursively copies the operands of the rtx,
355 except for those few rtx codes that are sharable. */
363 register RTX_CODE code
;
364 register const char *format_ptr
;
366 code
= GET_CODE (orig
);
379 /* SCRATCH must be shared because they represent distinct values. */
384 /* CONST can be shared if it contains a SYMBOL_REF. If it contains
385 a LABEL_REF, it isn't sharable. */
386 if (GET_CODE (XEXP (orig
, 0)) == PLUS
387 && GET_CODE (XEXP (XEXP (orig
, 0), 0)) == SYMBOL_REF
388 && GET_CODE (XEXP (XEXP (orig
, 0), 1)) == CONST_INT
)
392 /* A MEM with a constant address is not sharable. The problem is that
393 the constant address may need to be reloaded. If the mem is shared,
394 then reloading one copy of this mem will cause all copies to appear
395 to have been reloaded. */
401 copy
= rtx_alloc (code
);
403 /* Copy the various flags, and other information. We assume that
404 all fields need copying, and then clear the fields that should
405 not be copied. That is the sensible default behavior, and forces
406 us to explicitly document why we are *not* copying a flag. */
407 memcpy (copy
, orig
, sizeof (struct rtx_def
) - sizeof (rtunion
));
409 /* We do not copy the USED flag, which is used as a mark bit during
410 walks over the RTL. */
413 /* We do not copy FRAME_RELATED for INSNs. */
414 if (GET_RTX_CLASS (code
) == 'i')
415 copy
->frame_related
= 0;
416 copy
->jump
= orig
->jump
;
417 copy
->call
= orig
->call
;
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 /* This is 1 until after the rtl generation pass. */
586 int rtx_equal_function_value_matters
;
588 /* Return 1 if X and Y are identical-looking rtx's.
589 This is the Lisp function EQUAL for rtx arguments. */
597 register enum rtx_code code
;
598 register const char *fmt
;
602 if (x
== 0 || y
== 0)
606 /* Rtx's of different codes cannot be equal. */
607 if (code
!= GET_CODE (y
))
610 /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
611 (REG:SI x) and (REG:HI x) are NOT equivalent. */
613 if (GET_MODE (x
) != GET_MODE (y
))
616 /* Some RTL can be compared nonrecursively. */
620 /* Until rtl generation is complete, don't consider a reference to the
621 return register of the current function the same as the return from a
622 called function. This eases the job of function integration. Once the
623 distinction is no longer needed, they can be considered equivalent. */
624 return (REGNO (x
) == REGNO (y
)
625 && (! rtx_equal_function_value_matters
626 || REG_FUNCTION_VALUE_P (x
) == REG_FUNCTION_VALUE_P (y
)));
629 return XEXP (x
, 0) == XEXP (y
, 0);
632 return XSTR (x
, 0) == XSTR (y
, 0);
643 /* Compare the elements. If any pair of corresponding elements
644 fail to match, return 0 for the whole things. */
646 fmt
= GET_RTX_FORMAT (code
);
647 for (i
= GET_RTX_LENGTH (code
) - 1; i
>= 0; i
--)
652 if (XWINT (x
, i
) != XWINT (y
, i
))
658 if (XINT (x
, i
) != XINT (y
, i
))
664 /* Two vectors must have the same length. */
665 if (XVECLEN (x
, i
) != XVECLEN (y
, i
))
668 /* And the corresponding elements must match. */
669 for (j
= 0; j
< XVECLEN (x
, i
); j
++)
670 if (rtx_equal_p (XVECEXP (x
, i
, j
), XVECEXP (y
, i
, j
)) == 0)
675 if (rtx_equal_p (XEXP (x
, i
), XEXP (y
, i
)) == 0)
681 if (strcmp (XSTR (x
, i
), XSTR (y
, i
)))
686 /* These are just backpointers, so they don't matter. */
693 /* It is believed that rtx's at this level will never
694 contain anything but integers and other rtx's,
695 except for within LABEL_REFs and SYMBOL_REFs. */
703 /* Subroutines of read_rtx. */
705 /* The current line number for the file. */
706 int read_rtx_lineno
= 1;
708 /* The filename for aborting with file and line. */
709 const char *read_rtx_filename
= "<unknown>";
712 fatal_with_file_and_line
VPARAMS ((FILE *infile
, const char *msg
, ...))
714 #ifndef ANSI_PROTOTYPES
725 #ifndef ANSI_PROTOTYPES
726 infile
= va_arg (ap
, FILE *);
727 msg
= va_arg (ap
, const char *);
730 fprintf (stderr
, "%s:%d: ", read_rtx_filename
, read_rtx_lineno
);
731 vfprintf (stderr
, msg
, ap
);
734 /* Gather some following context. */
735 for (i
= 0; i
< sizeof(context
)-1; ++i
)
740 if (c
== '\r' || c
== '\n')
746 fprintf (stderr
, "%s:%d: following context is `%s'\n",
747 read_rtx_filename
, read_rtx_lineno
, context
);
753 /* Dump code after printing a message. Used when read_rtx finds
757 fatal_expected_char (infile
, expected_c
, actual_c
)
759 int expected_c
, actual_c
;
761 fatal_with_file_and_line (infile
, "expected character `%c', found `%c'",
762 expected_c
, actual_c
);
765 /* Read chars from INFILE until a non-whitespace char
766 and return that. Comments, both Lisp style and C style,
767 are treated as whitespace.
768 Tools such as genflags use this function. */
771 read_skip_spaces (infile
)
784 case ' ': case '\t': case '\f': case '\r':
790 while (c
!= '\n' && c
!= EOF
);
799 fatal_expected_char (infile
, '*', c
);
802 while ((c
= getc (infile
)) && c
!= EOF
)
806 else if (prevc
== '*' && c
== '/')
819 /* Read an rtx code name into the buffer STR[].
820 It is terminated by any of the punctuation chars of rtx printed syntax. */
823 read_name (str
, infile
)
830 c
= read_skip_spaces(infile
);
835 if (c
== ' ' || c
== '\n' || c
== '\t' || c
== '\f')
837 if (c
== ':' || c
== ')' || c
== ']' || c
== '"' || c
== '/'
838 || c
== '(' || c
== '[')
847 fatal_with_file_and_line (infile
, "missing name or number");
854 /* Provide a version of a function to read a long long if the system does
856 #if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ)
862 HOST_WIDE_INT tmp_wide
;
874 HOST_WIDE_INT new_wide
= tmp_wide
*10 + (*p
- '0');
875 if (new_wide
< tmp_wide
)
877 /* Return INT_MAX equiv on overflow. */
878 tmp_wide
= (~(unsigned HOST_WIDE_INT
)0) >> 1;
886 tmp_wide
= -tmp_wide
;
891 /* Read an rtx in printed representation from INFILE
892 and return an actual rtx in core constructed accordingly.
893 read_rtx is not used in the compiler proper, but rather in
894 the utilities gen*.c that construct C code from machine descriptions. */
900 register int i
, j
, list_counter
;
902 register const char *format_ptr
;
903 /* tmp_char is a buffer used for reading decimal integers
904 and names of rtx types and machine modes.
905 Therefore, 256 must be enough. */
910 HOST_WIDE_INT tmp_wide
;
912 /* Linked list structure for making RTXs: */
915 struct rtx_list
*next
;
916 rtx value
; /* Value of this node. */
919 c
= read_skip_spaces (infile
); /* Should be open paren. */
921 fatal_expected_char (infile
, '(', c
);
923 read_name (tmp_char
, infile
);
927 for (i
= 0; i
< NUM_RTX_CODE
; i
++)
928 if (! strcmp (tmp_char
, GET_RTX_NAME (i
)))
930 tmp_code
= (RTX_CODE
) i
; /* get value for name */
934 if (tmp_code
== UNKNOWN
)
935 fatal_with_file_and_line (infile
, "unknown rtx code `%s'", tmp_char
);
937 /* (NIL) stands for an expression that isn't there. */
940 /* Discard the closeparen. */
941 while ((c
= getc (infile
)) && c
!= ')')
947 /* If we end up with an insn expression then we free this space below. */
948 return_rtx
= rtx_alloc (tmp_code
);
949 format_ptr
= GET_RTX_FORMAT (GET_CODE (return_rtx
));
951 /* If what follows is `: mode ', read it and
952 store the mode in the rtx. */
954 i
= read_skip_spaces (infile
);
957 read_name (tmp_char
, infile
);
958 for (j
= 0; j
< NUM_MACHINE_MODES
; j
++)
959 if (! strcmp (GET_MODE_NAME (j
), tmp_char
))
962 if (j
== MAX_MACHINE_MODE
)
963 fatal_with_file_and_line (infile
, "unknown mode `%s'", tmp_char
);
965 PUT_MODE (return_rtx
, (enum machine_mode
) j
);
970 for (i
= 0; i
< GET_RTX_LENGTH (GET_CODE (return_rtx
)); i
++)
971 switch (*format_ptr
++)
973 /* 0 means a field for internal use only.
974 Don't expect it to be present in the input. */
980 XEXP (return_rtx
, i
) = read_rtx (infile
);
984 /* 'V' is an optional vector: if a closeparen follows,
985 just store NULL for this element. */
986 c
= read_skip_spaces (infile
);
990 XVEC (return_rtx
, i
) = 0;
993 /* Now process the vector. */
997 register struct rtx_list
*next_rtx
, *rtx_list_link
;
998 struct rtx_list
*list_rtx
= NULL
;
1000 c
= read_skip_spaces (infile
);
1002 fatal_expected_char (infile
, '[', c
);
1004 /* add expressions to a list, while keeping a count */
1007 while ((c
= read_skip_spaces (infile
)) && c
!= ']')
1011 rtx_list_link
= (struct rtx_list
*)
1012 alloca (sizeof (struct rtx_list
));
1013 rtx_list_link
->value
= read_rtx (infile
);
1015 list_rtx
= rtx_list_link
;
1017 next_rtx
->next
= rtx_list_link
;
1018 next_rtx
= rtx_list_link
;
1019 rtx_list_link
->next
= 0;
1021 /* get vector length and allocate it */
1022 XVEC (return_rtx
, i
) = (list_counter
1023 ? rtvec_alloc (list_counter
) : NULL_RTVEC
);
1024 if (list_counter
> 0)
1026 next_rtx
= list_rtx
;
1027 for (j
= 0; j
< list_counter
; j
++,
1028 next_rtx
= next_rtx
->next
)
1029 XVECEXP (return_rtx
, i
, j
) = next_rtx
->value
;
1031 /* close bracket gotten */
1036 /* 'S' is an optional string: if a closeparen follows,
1037 just store NULL for this element. */
1038 c
= read_skip_spaces (infile
);
1042 XSTR (return_rtx
, i
) = 0;
1049 register char *stringbuf
;
1051 c
= read_skip_spaces (infile
);
1055 c
= read_skip_spaces (infile
);
1058 fatal_expected_char (infile
, '"', c
);
1062 c
= getc (infile
); /* Read the string */
1067 c
= getc (infile
); /* Read the string */
1068 /* \; makes stuff for a C string constant containing
1072 obstack_grow (rtl_obstack
, "\\n\\t", 4);
1081 obstack_1grow (rtl_obstack
, c
);
1084 obstack_1grow (rtl_obstack
, 0);
1085 stringbuf
= (char *) obstack_finish (rtl_obstack
);
1089 c
= read_skip_spaces (infile
);
1091 fatal_expected_char (infile
, ')', c
);
1093 XSTR (return_rtx
, i
) = stringbuf
;
1098 read_name (tmp_char
, infile
);
1099 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
1100 tmp_wide
= atoi (tmp_char
);
1102 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
1103 tmp_wide
= atol (tmp_char
);
1105 /* Prefer atoll over atoq, since the former is in the ISO C9X draft.
1106 But prefer not to use our hand-rolled function above either. */
1107 #if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ)
1108 tmp_wide
= atoll (tmp_char
);
1110 tmp_wide
= atoq (tmp_char
);
1114 XWINT (return_rtx
, i
) = tmp_wide
;
1119 read_name (tmp_char
, infile
);
1120 tmp_int
= atoi (tmp_char
);
1121 XINT (return_rtx
, i
) = tmp_int
;
1126 "switch format wrong in rtl.read_rtx(). format was: %c.\n",
1128 fprintf (stderr
, "\tfile position: %ld\n", ftell (infile
));
1132 c
= read_skip_spaces (infile
);
1134 fatal_expected_char (infile
, ')', c
);
1139 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1141 rtl_check_failed_bounds (r
, n
, file
, line
, func
)
1148 error ("RTL check: access of elt %d of `%s' with last elt %d",
1149 n
, GET_RTX_NAME (GET_CODE (r
)), GET_RTX_LENGTH (GET_CODE (r
))-1);
1150 fancy_abort (file
, line
, func
);
1154 rtl_check_failed_type1 (r
, n
, c1
, file
, line
, func
)
1162 error ("RTL check: expected elt %d type '%c', have '%c' (rtx %s)",
1163 n
, c1
, GET_RTX_FORMAT (GET_CODE (r
))[n
], GET_RTX_NAME (GET_CODE (r
)));
1164 fancy_abort (file
, line
, func
);
1168 rtl_check_failed_type2 (r
, n
, c1
, c2
, file
, line
, func
)
1177 error ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s)",
1179 GET_RTX_FORMAT (GET_CODE (r
))[n
], GET_RTX_NAME (GET_CODE(r
)));
1180 fancy_abort (file
, line
, func
);
1184 rtl_check_failed_code1 (r
, code
, file
, line
, func
)
1191 error ("RTL check: expected code `%s', have `%s'",
1192 GET_RTX_NAME (code
), GET_RTX_NAME (GET_CODE (r
)));
1193 fancy_abort (file
, line
, func
);
1197 rtl_check_failed_code2 (r
, code1
, code2
, file
, line
, func
)
1199 enum rtx_code code1
, code2
;
1204 error ("RTL check: expected code `%s' or `%s', have `%s'",
1205 GET_RTX_NAME (code1
), GET_RTX_NAME (code2
),
1206 GET_RTX_NAME (GET_CODE (r
)));
1207 fancy_abort (file
, line
, func
);
1210 /* XXX Maybe print the vector? */
1212 rtvec_check_failed_bounds (r
, n
, file
, line
, func
)
1219 error ("RTL check: access of elt %d of vector with last elt %d",
1220 n
, GET_NUM_ELEM (r
)-1);
1221 fancy_abort (file
, line
, func
);
1223 #endif /* ENABLE_RTL_CHECKING */
1225 /* These are utility functions used by fatal-error functions all over the
1226 code. rtl.c happens to be linked by all the programs that need them,
1227 so these are here. In the future we want to break out all error handling
1228 to its own module. */
1230 /* Given a partial pathname as input, return another pathname that
1231 shares no directory elements with the pathname of __FILE__. This
1232 is used by fancy_abort() to print `Internal compiler error in expr.c'
1233 instead of `Internal compiler error in ../../egcs/gcc/expr.c'. */
1235 trim_filename (name
)
1238 static const char this_file
[] = __FILE__
;
1239 const char *p
= name
, *q
= this_file
;
1241 while (*p
== *q
&& *p
!= 0 && *q
!= 0) p
++, q
++;
1242 while (p
> name
&& p
[-1] != DIR_SEPARATOR
1243 #ifdef DIR_SEPARATOR_2
1244 && p
[-1] != DIR_SEPARATOR_2
1252 /* Report an internal compiler error in a friendly manner and without
1256 fancy_abort (file
, line
, function
)
1259 const char *function
;
1261 if (function
== NULL
)
1264 "Internal compiler error in `%s', at %s:%d\n\
1265 Please submit a full bug report.\n\
1266 See %s for instructions.",
1267 function
, trim_filename (file
), line
, GCCBUGURL
);