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
57 (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
59 # if MAX_LONG_DOUBLE_TYPE_SIZE == 128
61 (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
63 # if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
65 (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
69 #endif /* REAL_ARITHMETIC */
72 # if HOST_BITS_PER_WIDE_INT*2 >= MAX_LONG_DOUBLE_TYPE_SIZE
75 # if HOST_BITS_PER_WIDE_INT*3 >= MAX_LONG_DOUBLE_TYPE_SIZE
78 # if HOST_BITS_PER_WIDE_INT*4 >= MAX_LONG_DOUBLE_TYPE_SIZE
83 #endif /* REAL_WIDTH */
86 # define CONST_DOUBLE_FORMAT "e0ww"
89 # define CONST_DOUBLE_FORMAT "e0ww"
92 # define CONST_DOUBLE_FORMAT "e0www"
95 # define CONST_DOUBLE_FORMAT "e0wwww"
98 # define CONST_DOUBLE_FORMAT "e0wwwww"
100 # define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */
107 /* Indexed by rtx code, gives number of operands for an rtx with that code.
108 Does NOT include rtx header data (code and links). */
110 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) sizeof FORMAT - 1 ,
112 const int rtx_length[NUM_RTX_CODE + 1] = {
118 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string. */
120 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME ,
122 const char * const rtx_name[] = {
123 #include "rtl.def" /* rtl expressions are documented here */
128 /* Indexed by machine mode, gives the name of that machine mode.
129 This name does not include the letters "mode". */
131 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME,
133 const char * const mode_name[(int) MAX_MACHINE_MODE + 1] = {
134 #include "machmode.def"
135 /* Add an extra field to avoid a core dump if someone tries to convert
136 MAX_MACHINE_MODE to a string. */
142 /* Indexed by machine mode, gives the length of the mode, in bytes.
143 GET_MODE_CLASS uses this. */
145 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS,
147 const enum mode_class mode_class[(int) MAX_MACHINE_MODE] = {
148 #include "machmode.def"
153 /* Indexed by machine mode, gives the length of the mode, in bytes.
154 GET_MODE_SIZE uses this. */
156 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE,
158 const unsigned int mode_size[(int) MAX_MACHINE_MODE] = {
159 #include "machmode.def"
164 /* Indexed by machine mode, gives the length of the mode's subunit.
165 GET_MODE_UNIT_SIZE uses this. */
167 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT,
169 const unsigned int mode_unit_size[(int) MAX_MACHINE_MODE] = {
170 #include "machmode.def" /* machine modes are documented here */
175 /* Indexed by machine mode, gives next wider natural mode
176 (QI -> HI -> SI -> DI, etc.) Widening multiply instructions
179 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
180 (unsigned char) WIDER,
182 const unsigned char mode_wider_mode[(int) MAX_MACHINE_MODE] = {
183 #include "machmode.def" /* machine modes are documented here */
188 #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
189 ((SIZE) * BITS_PER_UNIT >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (SIZE) * BITS_PER_UNIT) - 1,
191 /* Indexed by machine mode, gives mask of significant bits in mode. */
193 const unsigned HOST_WIDE_INT mode_mask_array[(int) MAX_MACHINE_MODE] = {
194 #include "machmode.def"
197 /* Indexed by mode class, gives the narrowest mode for each class.
198 The Q modes are always of width 1 (2 for complex) - it is impossible
199 for any mode to be narrower. */
201 const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS] = {
202 /* MODE_RANDOM */ VOIDmode,
203 /* MODE_INT */ QImode,
204 /* MODE_FLOAT */ QFmode,
205 /* MODE_PARTIAL_INT */ PQImode,
206 /* MODE_CC */ CCmode,
207 /* MODE_COMPLEX_INT */ CQImode,
208 /* MODE_COMPLEX_FLOAT */ QCmode,
209 /* MODE_VECTOR_INT */ V2QImode,
210 /* MODE_VECTOR_FLOAT */ V2SFmode
214 /* Indexed by rtx code, gives a sequence of operand-types for
215 rtx's of that code. The sequence is a C string in which
216 each character describes one operand. */
218 const char * const rtx_format[] = {
220 can cause a warning message
221 "0" field is unused (or used in a phase-dependent manner)
225 "n" like "i", but prints entries from `note_insn_name'
226 "w" an integer of width HOST_BITS_PER_WIDE_INT
228 "s" a pointer to a string
230 "S" like "s", but optional:
231 the containing rtx may end before this operand
232 "e" a pointer to an rtl expression
233 prints the expression
234 "E" a pointer to a vector that points to a number of rtl expressions
235 prints a list of the rtl expressions
236 "V" like "E", but optional:
237 the containing rtx may end before this operand
238 "u" a pointer to another insn
239 prints the uid of the insn.
240 "b" is a pointer to a bitmap header.
241 "t" is a tree pointer. */
243 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT ,
244 #include "rtl.def" /* rtl expressions are defined here */
248 /* Indexed by rtx code, gives a character representing the "class" of
249 that rtx code. See rtl.def for documentation on the defined classes. */
251 const char rtx_class[] = {
252 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS,
253 #include "rtl.def" /* rtl expressions are defined here */
257 /* Names for kinds of NOTEs and REG_NOTEs. */
259 const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS] =
261 "", "NOTE_INSN_DELETED",
262 "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END",
263 "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END",
264 "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP",
265 "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP",
266 "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG",
267 "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG",
268 "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END",
269 "NOTE_INSN_REPEATED_LINE_NUMBER", "NOTE_INSN_RANGE_BEG",
270 "NOTE_INSN_RANGE_END", "NOTE_INSN_LIVE",
271 "NOTE_INSN_BASIC_BLOCK", "NOTE_INSN_EXPECTED_VALUE"
274 const char * const reg_note_name[] =
276 "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_EQUAL",
277 "REG_WAS_0", "REG_RETVAL", "REG_LIBCALL", "REG_NONNEG",
278 "REG_NO_CONFLICT", "REG_UNUSED", "REG_CC_SETTER", "REG_CC_USER",
279 "REG_LABEL", "REG_DEP_ANTI", "REG_DEP_OUTPUT", "REG_BR_PROB",
280 "REG_EXEC_COUNT", "REG_NOALIAS", "REG_SAVE_AREA", "REG_BR_PRED",
281 "REG_FRAME_RELATED_EXPR", "REG_EH_CONTEXT", "REG_EH_REGION",
282 "REG_EH_RETHROW", "REG_SAVE_NOTE", "REG_MAYBE_DEAD", "REG_NORETURN"
285 static void fatal_with_file_and_line PARAMS ((FILE *, const char *, ...))
286 ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
287 static void fatal_expected_char PARAMS ((FILE *, int, int)) ATTRIBUTE_NORETURN;
288 static void read_name PARAMS ((char *, FILE *));
291 /* Allocate an rtx vector of N elements.
292 Store the length, and initialize all elements to zero. */
301 rt = ggc_alloc_rtvec (n);
303 rt = (rtvec) obstack_alloc (rtl_obstack,
304 sizeof (struct rtvec_def)
305 + ((n - 1) * sizeof (rtx)));
306 /* clear out the vector */
307 memset (&rt->elem[0], 0, n * sizeof (rtx));
309 PUT_NUM_ELEM (rt, n);
313 /* Allocate an rtx of code CODE. The CODE is stored in the rtx;
314 all the rest is initialized to zero. */
321 int n = GET_RTX_LENGTH (code);
324 rt = ggc_alloc_rtx (n);
326 rt = (rtx) obstack_alloc (rtl_obstack,
327 sizeof (struct rtx_def)
328 + ((n - 1) * sizeof (rtunion)));
330 /* We want to clear everything up to the FLD array. Normally, this
331 is one int, but we don't want to assume that and it isn't very
332 portable anyway; this is. */
334 memset (rt, 0, sizeof (struct rtx_def) - sizeof (rtunion));
339 /* Free the rtx X and all RTL allocated since X. */
346 obstack_free (rtl_obstack, x);
349 /* Create a new copy of an rtx.
350 Recursively copies the operands of the rtx,
351 except for those few rtx codes that are sharable. */
359 register RTX_CODE code;
360 register const char *format_ptr;
362 code = GET_CODE (orig);
375 /* SCRATCH must be shared because they represent distinct values. */
380 /* CONST can be shared if it contains a SYMBOL_REF. If it contains
381 a LABEL_REF, it isn't sharable. */
382 if (GET_CODE (XEXP (orig, 0)) == PLUS
383 && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
384 && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT)
388 /* A MEM with a constant address is not sharable. The problem is that
389 the constant address may need to be reloaded. If the mem is shared,
390 then reloading one copy of this mem will cause all copies to appear
391 to have been reloaded. */
397 copy = rtx_alloc (code);
399 /* Copy the various flags, and other information. We assume that
400 all fields need copying, and then clear the fields that should
401 not be copied. That is the sensible default behavior, and forces
402 us to explicitly document why we are *not* copying a flag. */
403 memcpy (copy, orig, sizeof (struct rtx_def) - sizeof (rtunion));
405 /* We do not copy the USED flag, which is used as a mark bit during
406 walks over the RTL. */
409 /* We do not copy FRAME_RELATED for INSNs. */
410 if (GET_RTX_CLASS (code) == 'i')
411 copy->frame_related = 0;
412 copy->jump = orig->jump;
413 copy->call = orig->call;
415 format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
417 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
419 copy->fld[i] = orig->fld[i];
420 switch (*format_ptr++)
423 if (XEXP (orig, i) != NULL)
424 XEXP (copy, i) = copy_rtx (XEXP (orig, i));
429 if (XVEC (orig, i) != NULL)
431 XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
432 for (j = 0; j < XVECLEN (copy, i); j++)
433 XVECEXP (copy, i, j) = copy_rtx (XVECEXP (orig, i, j));
439 bitmap new_bits = BITMAP_OBSTACK_ALLOC (rtl_obstack);
440 bitmap_copy (new_bits, XBITMAP (orig, i));
441 XBITMAP (copy, i) = new_bits;
452 /* These are left unchanged. */
462 /* Similar to `copy_rtx' except that if MAY_SHARE is present, it is
463 placed in the result directly, rather than being copied. */
466 copy_most_rtx (orig, may_share)
468 register rtx may_share;
472 register RTX_CODE code;
473 register const char *format_ptr;
475 if (orig == may_share)
478 code = GET_CODE (orig);
495 copy = rtx_alloc (code);
496 PUT_MODE (copy, GET_MODE (orig));
497 copy->in_struct = orig->in_struct;
498 copy->volatil = orig->volatil;
499 copy->unchanging = orig->unchanging;
500 copy->integrated = orig->integrated;
502 format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
504 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
506 switch (*format_ptr++)
509 XEXP (copy, i) = XEXP (orig, i);
510 if (XEXP (orig, i) != NULL && XEXP (orig, i) != may_share)
511 XEXP (copy, i) = copy_most_rtx (XEXP (orig, i), may_share);
515 XEXP (copy, i) = XEXP (orig, i);
520 XVEC (copy, i) = XVEC (orig, i);
521 if (XVEC (orig, i) != NULL)
523 XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
524 for (j = 0; j < XVECLEN (copy, i); j++)
526 = copy_most_rtx (XVECEXP (orig, i, j), may_share);
531 XWINT (copy, i) = XWINT (orig, i);
536 XINT (copy, i) = XINT (orig, i);
540 XTREE (copy, i) = XTREE (orig, i);
545 XSTR (copy, i) = XSTR (orig, i);
549 /* Copy this through the wide int field; that's safest. */
550 X0WINT (copy, i) = X0WINT (orig, i);
560 /* Create a new copy of an rtx. Only copy just one level. */
562 shallow_copy_rtx (orig)
566 register RTX_CODE code = GET_CODE (orig);
567 register rtx copy = rtx_alloc (code);
569 PUT_MODE (copy, GET_MODE (orig));
570 copy->in_struct = orig->in_struct;
571 copy->volatil = orig->volatil;
572 copy->unchanging = orig->unchanging;
573 copy->integrated = orig->integrated;
575 for (i = 0; i < GET_RTX_LENGTH (code); i++)
576 copy->fld[i] = orig->fld[i];
581 /* This is 1 until after the rtl generation pass. */
582 int rtx_equal_function_value_matters;
584 /* Nonzero when we are generating CONCATs. */
585 int generating_concat_p;
587 /* Return 1 if X and Y are identical-looking rtx's.
588 This is the Lisp function EQUAL for rtx arguments. */
596 register enum rtx_code code;
597 register const char *fmt;
601 if (x == 0 || y == 0)
605 /* Rtx's of different codes cannot be equal. */
606 if (code != GET_CODE (y))
609 /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
610 (REG:SI x) and (REG:HI x) are NOT equivalent. */
612 if (GET_MODE (x) != GET_MODE (y))
615 /* Some RTL can be compared nonrecursively. */
619 /* Until rtl generation is complete, don't consider a reference to the
620 return register of the current function the same as the return from a
621 called function. This eases the job of function integration. Once the
622 distinction is no longer needed, they can be considered equivalent. */
623 return (REGNO (x) == REGNO (y)
624 && (! rtx_equal_function_value_matters
625 || REG_FUNCTION_VALUE_P (x) == REG_FUNCTION_VALUE_P (y)));
628 return XEXP (x, 0) == XEXP (y, 0);
631 return XSTR (x, 0) == XSTR (y, 0);
642 /* Compare the elements. If any pair of corresponding elements
643 fail to match, return 0 for the whole things. */
645 fmt = GET_RTX_FORMAT (code);
646 for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
651 if (XWINT (x, i) != XWINT (y, i))
657 if (XINT (x, i) != XINT (y, i))
663 /* Two vectors must have the same length. */
664 if (XVECLEN (x, i) != XVECLEN (y, i))
667 /* And the corresponding elements must match. */
668 for (j = 0; j < XVECLEN (x, i); j++)
669 if (rtx_equal_p (XVECEXP (x, i, j), XVECEXP (y, i, j)) == 0)
674 if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0)
680 if (strcmp (XSTR (x, i), XSTR (y, i)))
685 /* These are just backpointers, so they don't matter. */
692 /* It is believed that rtx's at this level will never
693 contain anything but integers and other rtx's,
694 except for within LABEL_REFs and SYMBOL_REFs. */
702 /* Subroutines of read_rtx. */
704 /* The current line number for the file. */
705 int read_rtx_lineno = 1;
707 /* The filename for aborting with file and line. */
708 const char *read_rtx_filename = "<unknown>";
711 fatal_with_file_and_line VPARAMS ((FILE *infile, const char *msg, ...))
713 #ifndef ANSI_PROTOTYPES
724 #ifndef ANSI_PROTOTYPES
725 infile = va_arg (ap, FILE *);
726 msg = va_arg (ap, const char *);
729 fprintf (stderr, "%s:%d: ", read_rtx_filename, read_rtx_lineno);
730 vfprintf (stderr, msg, ap);
733 /* Gather some following context. */
734 for (i = 0; i < sizeof(context)-1; ++i)
739 if (c == '\r' || c == '\n')
745 fprintf (stderr, "%s:%d: following context is `%s'\n",
746 read_rtx_filename, read_rtx_lineno, context);
752 /* Dump code after printing a message. Used when read_rtx finds
756 fatal_expected_char (infile, expected_c, actual_c)
758 int expected_c, actual_c;
760 fatal_with_file_and_line (infile, "expected character `%c', found `%c'",
761 expected_c, actual_c);
764 /* Read chars from INFILE until a non-whitespace char
765 and return that. Comments, both Lisp style and C style,
766 are treated as whitespace.
767 Tools such as genflags use this function. */
770 read_skip_spaces (infile)
783 case ' ': case '\t': case '\f': case '\r':
789 while (c != '\n' && c != EOF);
798 fatal_expected_char (infile, '*', c);
801 while ((c = getc (infile)) && c != EOF)
805 else if (prevc == '*' && c == '/')
818 /* Read an rtx code name into the buffer STR[].
819 It is terminated by any of the punctuation chars of rtx printed syntax. */
822 read_name (str, infile)
829 c = read_skip_spaces(infile);
834 if (c == ' ' || c == '\n' || c == '\t' || c == '\f')
836 if (c == ':' || c == ')' || c == ']' || c == '"' || c == '/'
837 || c == '(' || c == '[')
846 fatal_with_file_and_line (infile, "missing name or number");
853 /* Provide a version of a function to read a long long if the system does
855 #if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ)
861 HOST_WIDE_INT tmp_wide;
873 HOST_WIDE_INT new_wide = tmp_wide*10 + (*p - '0');
874 if (new_wide < tmp_wide)
876 /* Return INT_MAX equiv on overflow. */
877 tmp_wide = (~(unsigned HOST_WIDE_INT)0) >> 1;
885 tmp_wide = -tmp_wide;
890 /* Read an rtx in printed representation from INFILE
891 and return an actual rtx in core constructed accordingly.
892 read_rtx is not used in the compiler proper, but rather in
893 the utilities gen*.c that construct C code from machine descriptions. */
899 register int i, j, list_counter;
901 register const char *format_ptr;
902 /* tmp_char is a buffer used for reading decimal integers
903 and names of rtx types and machine modes.
904 Therefore, 256 must be enough. */
909 HOST_WIDE_INT tmp_wide;
911 /* Linked list structure for making RTXs: */
914 struct rtx_list *next;
915 rtx value; /* Value of this node. */
918 c = read_skip_spaces (infile); /* Should be open paren. */
920 fatal_expected_char (infile, '(', c);
922 read_name (tmp_char, infile);
926 for (i = 0; i < NUM_RTX_CODE; i++)
927 if (! strcmp (tmp_char, GET_RTX_NAME (i)))
929 tmp_code = (RTX_CODE) i; /* get value for name */
933 if (tmp_code == UNKNOWN)
934 fatal_with_file_and_line (infile, "unknown rtx code `%s'", tmp_char);
936 /* (NIL) stands for an expression that isn't there. */
939 /* Discard the closeparen. */
940 while ((c = getc (infile)) && c != ')')
946 /* If we end up with an insn expression then we free this space below. */
947 return_rtx = rtx_alloc (tmp_code);
948 format_ptr = GET_RTX_FORMAT (GET_CODE (return_rtx));
950 /* If what follows is `: mode ', read it and
951 store the mode in the rtx. */
953 i = read_skip_spaces (infile);
956 read_name (tmp_char, infile);
957 for (j = 0; j < NUM_MACHINE_MODES; j++)
958 if (! strcmp (GET_MODE_NAME (j), tmp_char))
961 if (j == MAX_MACHINE_MODE)
962 fatal_with_file_and_line (infile, "unknown mode `%s'", tmp_char);
964 PUT_MODE (return_rtx, (enum machine_mode) j);
969 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (return_rtx)); i++)
970 switch (*format_ptr++)
972 /* 0 means a field for internal use only.
973 Don't expect it to be present in the input. */
979 XEXP (return_rtx, i) = read_rtx (infile);
983 /* 'V' is an optional vector: if a closeparen follows,
984 just store NULL for this element. */
985 c = read_skip_spaces (infile);
989 XVEC (return_rtx, i) = 0;
992 /* Now process the vector. */
996 register struct rtx_list *next_rtx, *rtx_list_link;
997 struct rtx_list *list_rtx = NULL;
999 c = read_skip_spaces (infile);
1001 fatal_expected_char (infile, '[', c);
1003 /* add expressions to a list, while keeping a count */
1006 while ((c = read_skip_spaces (infile)) && c != ']')
1010 rtx_list_link = (struct rtx_list *)
1011 alloca (sizeof (struct rtx_list));
1012 rtx_list_link->value = read_rtx (infile);
1014 list_rtx = rtx_list_link;
1016 next_rtx->next = rtx_list_link;
1017 next_rtx = rtx_list_link;
1018 rtx_list_link->next = 0;
1020 /* get vector length and allocate it */
1021 XVEC (return_rtx, i) = (list_counter
1022 ? rtvec_alloc (list_counter) : NULL_RTVEC);
1023 if (list_counter > 0)
1025 next_rtx = list_rtx;
1026 for (j = 0; j < list_counter; j++,
1027 next_rtx = next_rtx->next)
1028 XVECEXP (return_rtx, i, j) = next_rtx->value;
1030 /* close bracket gotten */
1035 /* 'S' is an optional string: if a closeparen follows,
1036 just store NULL for this element. */
1037 c = read_skip_spaces (infile);
1041 XSTR (return_rtx, i) = 0;
1048 register char *stringbuf;
1050 c = read_skip_spaces (infile);
1054 c = read_skip_spaces (infile);
1057 fatal_expected_char (infile, '"', c);
1061 c = getc (infile); /* Read the string */
1066 c = getc (infile); /* Read the string */
1067 /* \; makes stuff for a C string constant containing
1071 obstack_grow (rtl_obstack, "\\n\\t", 4);
1080 obstack_1grow (rtl_obstack, c);
1083 obstack_1grow (rtl_obstack, 0);
1084 stringbuf = (char *) obstack_finish (rtl_obstack);
1088 c = read_skip_spaces (infile);
1090 fatal_expected_char (infile, ')', c);
1092 XSTR (return_rtx, i) = stringbuf;
1097 read_name (tmp_char, infile);
1098 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
1099 tmp_wide = atoi (tmp_char);
1101 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
1102 tmp_wide = atol (tmp_char);
1104 /* Prefer atoll over atoq, since the former is in the ISO C9X draft.
1105 But prefer not to use our hand-rolled function above either. */
1106 #if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ)
1107 tmp_wide = atoll (tmp_char);
1109 tmp_wide = atoq (tmp_char);
1113 XWINT (return_rtx, i) = tmp_wide;
1118 read_name (tmp_char, infile);
1119 tmp_int = atoi (tmp_char);
1120 XINT (return_rtx, i) = tmp_int;
1125 "switch format wrong in rtl.read_rtx(). format was: %c.\n",
1127 fprintf (stderr, "\tfile position: %ld\n", ftell (infile));
1131 c = read_skip_spaces (infile);
1133 fatal_expected_char (infile, ')', c);
1138 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1140 rtl_check_failed_bounds (r, n, file, line, func)
1147 error ("RTL check: access of elt %d of `%s' with last elt %d",
1148 n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r))-1);
1149 fancy_abort (file, line, func);
1153 rtl_check_failed_type1 (r, n, c1, file, line, func)
1161 error ("RTL check: expected elt %d type '%c', have '%c' (rtx %s)",
1162 n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)));
1163 fancy_abort (file, line, func);
1167 rtl_check_failed_type2 (r, n, c1, c2, file, line, func)
1176 error ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s)",
1178 GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE(r)));
1179 fancy_abort (file, line, func);
1183 rtl_check_failed_code1 (r, code, file, line, func)
1190 error ("RTL check: expected code `%s', have `%s'",
1191 GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)));
1192 fancy_abort (file, line, func);
1196 rtl_check_failed_code2 (r, code1, code2, file, line, func)
1198 enum rtx_code code1, code2;
1203 error ("RTL check: expected code `%s' or `%s', have `%s'",
1204 GET_RTX_NAME (code1), GET_RTX_NAME (code2),
1205 GET_RTX_NAME (GET_CODE (r)));
1206 fancy_abort (file, line, func);
1209 /* XXX Maybe print the vector? */
1211 rtvec_check_failed_bounds (r, n, file, line, func)
1218 error ("RTL check: access of elt %d of vector with last elt %d",
1219 n, GET_NUM_ELEM (r)-1);
1220 fancy_abort (file, line, func);
1222 #endif /* ENABLE_RTL_CHECKING */