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6f29feb1 | 1 | /* Allocate and read RTL for GNU C Compiler. |
c5c76735 JL |
2 | Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999 |
3 | Free Software Foundation, Inc. | |
6f29feb1 JW |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
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) | |
10 | any later version. | |
11 | ||
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. | |
16 | ||
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 | |
e99215a3 RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
6f29feb1 JW |
21 | |
22 | ||
23 | #include "config.h" | |
670ee920 | 24 | #include "system.h" |
6f29feb1 | 25 | #include "rtl.h" |
a19a1b5d | 26 | #include "real.h" |
0dfa1860 | 27 | #include "bitmap.h" |
a3770a81 | 28 | #include "ggc.h" |
6f29feb1 | 29 | #include "obstack.h" |
17074a35 | 30 | #include "toplev.h" |
6f29feb1 JW |
31 | #define obstack_chunk_alloc xmalloc |
32 | #define obstack_chunk_free free | |
6f29feb1 | 33 | |
987009bf ZW |
34 | #ifndef DIR_SEPARATOR |
35 | #define DIR_SEPARATOR '/' | |
36 | #endif | |
37 | ||
6f29feb1 JW |
38 | /* Obstack used for allocating RTL objects. |
39 | Between functions, this is the permanent_obstack. | |
40 | While parsing and expanding a function, this is maybepermanent_obstack | |
41 | so we can save it if it is an inline function. | |
42 | During optimization and output, this is function_obstack. */ | |
43 | ||
44 | extern struct obstack *rtl_obstack; | |
6f29feb1 | 45 | \f |
aa0b4465 ZW |
46 | /* Calculate the format for CONST_DOUBLE. This depends on the relative |
47 | widths of HOST_WIDE_INT and REAL_VALUE_TYPE. | |
b6b4c6c6 RH |
48 | |
49 | We need to go out to e0wwwww, since REAL_ARITHMETIC assumes 16-bits | |
50 | per element in REAL_VALUE_TYPE. | |
51 | ||
aa0b4465 | 52 | This is duplicated in gengenrtl.c. |
b6b4c6c6 | 53 | |
aa0b4465 ZW |
54 | A number of places assume that there are always at least two 'w' |
55 | slots in a CONST_DOUBLE, so we provide them even if one would suffice. */ | |
b6b4c6c6 RH |
56 | |
57 | #ifdef REAL_ARITHMETIC | |
58 | #if LONG_DOUBLE_TYPE_SIZE == 96 | |
59 | #define REAL_WIDTH (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT | |
60 | #elif LONG_DOUBLE_TYPE_SIZE == 128 | |
61 | #define REAL_WIDTH (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT | |
62 | #elif HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT | |
63 | #define REAL_WIDTH (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT | |
64 | #endif | |
65 | #endif /* REAL_ARITHMETIC */ | |
66 | ||
67 | #ifndef REAL_WIDTH | |
68 | #if HOST_BITS_PER_WIDE_INT*2 >= LONG_DOUBLE_TYPE_SIZE | |
69 | #define REAL_WIDTH 2 | |
70 | #elif HOST_BITS_PER_WIDE_INT*3 >= LONG_DOUBLE_TYPE_SIZE | |
71 | #define REAL_WIDTH 3 | |
72 | #elif HOST_BITS_PER_WIDE_INT*4 >= LONG_DOUBLE_TYPE_SIZE | |
73 | #define REAL_WIDTH 4 | |
74 | #endif | |
75 | #endif /* REAL_WIDTH */ | |
76 | ||
77 | #if REAL_WIDTH == 1 | |
aa0b4465 | 78 | #define CONST_DOUBLE_FORMAT "e0ww" |
b6b4c6c6 | 79 | #elif REAL_WIDTH == 2 |
aa0b4465 | 80 | #define CONST_DOUBLE_FORMAT "e0ww" |
b6b4c6c6 | 81 | #elif REAL_WIDTH == 3 |
aa0b4465 | 82 | #define CONST_DOUBLE_FORMAT "e0www" |
b6b4c6c6 | 83 | #elif REAL_WIDTH == 4 |
aa0b4465 | 84 | #define CONST_DOUBLE_FORMAT "e0wwww" |
b6b4c6c6 RH |
85 | #elif REAL_WIDTH == 5 |
86 | #define CONST_DOUBLE_FORMAT "e0wwwww" | |
aa0b4465 ZW |
87 | #else |
88 | #define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */ | |
89 | #endif | |
90 | ||
6f29feb1 | 91 | /* Indexed by rtx code, gives number of operands for an rtx with that code. |
aa0b4465 | 92 | Does NOT include rtx header data (code and links). */ |
6f29feb1 | 93 | |
aa0b4465 ZW |
94 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) sizeof FORMAT - 1 , |
95 | ||
96 | const int rtx_length[NUM_RTX_CODE + 1] = { | |
97 | #include "rtl.def" | |
98 | }; | |
99 | ||
100 | #undef DEF_RTL_EXPR | |
6f29feb1 JW |
101 | |
102 | /* Indexed by rtx code, gives the name of that kind of rtx, as a C string. */ | |
103 | ||
104 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME , | |
105 | ||
5f06c983 | 106 | const char * const rtx_name[] = { |
6f29feb1 JW |
107 | #include "rtl.def" /* rtl expressions are documented here */ |
108 | }; | |
109 | ||
110 | #undef DEF_RTL_EXPR | |
111 | ||
112 | /* Indexed by machine mode, gives the name of that machine mode. | |
113 | This name does not include the letters "mode". */ | |
114 | ||
115 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME, | |
116 | ||
a4ec8d12 | 117 | const char * const mode_name[(int) MAX_MACHINE_MODE + 1] = { |
6f29feb1 | 118 | #include "machmode.def" |
913f68c1 JC |
119 | /* Add an extra field to avoid a core dump if someone tries to convert |
120 | MAX_MACHINE_MODE to a string. */ | |
121 | "" | |
6f29feb1 JW |
122 | }; |
123 | ||
124 | #undef DEF_MACHMODE | |
125 | ||
126 | /* Indexed by machine mode, gives the length of the mode, in bytes. | |
127 | GET_MODE_CLASS uses this. */ | |
128 | ||
129 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS, | |
130 | ||
aa0b4465 | 131 | const enum mode_class mode_class[(int) MAX_MACHINE_MODE] = { |
6f29feb1 JW |
132 | #include "machmode.def" |
133 | }; | |
134 | ||
135 | #undef DEF_MACHMODE | |
136 | ||
137 | /* Indexed by machine mode, gives the length of the mode, in bytes. | |
138 | GET_MODE_SIZE uses this. */ | |
139 | ||
140 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE, | |
141 | ||
aa0b4465 | 142 | const int mode_size[(int) MAX_MACHINE_MODE] = { |
6f29feb1 JW |
143 | #include "machmode.def" |
144 | }; | |
145 | ||
146 | #undef DEF_MACHMODE | |
147 | ||
148 | /* Indexed by machine mode, gives the length of the mode's subunit. | |
149 | GET_MODE_UNIT_SIZE uses this. */ | |
150 | ||
151 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT, | |
152 | ||
aa0b4465 | 153 | const int mode_unit_size[(int) MAX_MACHINE_MODE] = { |
6f29feb1 JW |
154 | #include "machmode.def" /* machine modes are documented here */ |
155 | }; | |
156 | ||
157 | #undef DEF_MACHMODE | |
158 | ||
159 | /* Indexed by machine mode, gives next wider natural mode | |
160 | (QI -> HI -> SI -> DI, etc.) Widening multiply instructions | |
161 | use this. */ | |
162 | ||
163 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \ | |
913f68c1 | 164 | (unsigned char) WIDER, |
6f29feb1 | 165 | |
aa0b4465 | 166 | const unsigned char mode_wider_mode[(int) MAX_MACHINE_MODE] = { |
6f29feb1 JW |
167 | #include "machmode.def" /* machine modes are documented here */ |
168 | }; | |
169 | ||
170 | #undef DEF_MACHMODE | |
171 | ||
913f68c1 JC |
172 | #define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \ |
173 | ((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 | ||
175 | /* Indexed by machine mode, gives mask of significant bits in mode. */ | |
176 | ||
aa0b4465 | 177 | const unsigned HOST_WIDE_INT mode_mask_array[(int) MAX_MACHINE_MODE] = { |
913f68c1 JC |
178 | #include "machmode.def" |
179 | }; | |
180 | ||
aa0b4465 ZW |
181 | /* Indexed by mode class, gives the narrowest mode for each class. |
182 | The Q modes are always of width 1 (2 for complex) - it is impossible | |
183 | for any mode to be narrower. */ | |
184 | ||
185 | const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS] = { | |
186 | /* MODE_RANDOM */ VOIDmode, | |
187 | /* MODE_INT */ QImode, | |
188 | /* MODE_FLOAT */ QFmode, | |
189 | /* MODE_PARTIAL_INT */ PQImode, | |
190 | /* MODE_CC */ CCmode, | |
191 | /* MODE_COMPLEX_INT */ CQImode, | |
192 | /* MODE_COMPLEX_FLOAT */ QCmode | |
193 | }; | |
194 | ||
4a39a918 | 195 | |
6f29feb1 JW |
196 | /* Indexed by rtx code, gives a sequence of operand-types for |
197 | rtx's of that code. The sequence is a C string in which | |
6dc42e49 | 198 | each character describes one operand. */ |
6f29feb1 | 199 | |
aa0b4465 | 200 | const char * const rtx_format[] = { |
6f29feb1 JW |
201 | /* "*" undefined. |
202 | can cause a warning message | |
203 | "0" field is unused (or used in a phase-dependent manner) | |
204 | prints nothing | |
205 | "i" an integer | |
206 | prints the integer | |
207 | "n" like "i", but prints entries from `note_insn_name' | |
c166a311 CH |
208 | "w" an integer of width HOST_BITS_PER_WIDE_INT |
209 | prints the integer | |
6f29feb1 JW |
210 | "s" a pointer to a string |
211 | prints the string | |
212 | "S" like "s", but optional: | |
213 | the containing rtx may end before this operand | |
214 | "e" a pointer to an rtl expression | |
215 | prints the expression | |
216 | "E" a pointer to a vector that points to a number of rtl expressions | |
217 | prints a list of the rtl expressions | |
218 | "V" like "E", but optional: | |
219 | the containing rtx may end before this operand | |
220 | "u" a pointer to another insn | |
0dfa1860 MM |
221 | prints the uid of the insn. |
222 | "b" is a pointer to a bitmap header. | |
223 | "t" is a tree pointer. */ | |
6f29feb1 JW |
224 | |
225 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT , | |
226 | #include "rtl.def" /* rtl expressions are defined here */ | |
227 | #undef DEF_RTL_EXPR | |
228 | }; | |
229 | ||
230 | /* Indexed by rtx code, gives a character representing the "class" of | |
231 | that rtx code. See rtl.def for documentation on the defined classes. */ | |
232 | ||
1f9a015e | 233 | const char rtx_class[] = { |
6f29feb1 JW |
234 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS, |
235 | #include "rtl.def" /* rtl expressions are defined here */ | |
236 | #undef DEF_RTL_EXPR | |
237 | }; | |
238 | ||
239 | /* Names for kinds of NOTEs and REG_NOTEs. */ | |
240 | ||
1f9a015e | 241 | const char * const note_insn_name[] = { 0 , "NOTE_INSN_DELETED", |
6f29feb1 JW |
242 | "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END", |
243 | "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END", | |
244 | "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP", | |
bdac5f58 | 245 | "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP", |
196cedd0 | 246 | "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG", |
3d195391 | 247 | "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG", |
f6e3c1bb | 248 | "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END", |
0dfa1860 | 249 | "NOTE_REPEATED_LINE_NUMBER", "NOTE_INSN_RANGE_START", |
e881bb1b RH |
250 | "NOTE_INSN_RANGE_END", "NOTE_INSN_LIVE", |
251 | "NOTE_INSN_BASIC_BLOCK" }; | |
6f29feb1 | 252 | |
1f9a015e | 253 | const char * const reg_note_name[] = { "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_WAS_0", |
6f29feb1 JW |
254 | "REG_EQUAL", "REG_RETVAL", "REG_LIBCALL", |
255 | "REG_NONNEG", "REG_NO_CONFLICT", "REG_UNUSED", | |
256 | "REG_CC_SETTER", "REG_CC_USER", "REG_LABEL", | |
f6e3c1bb | 257 | "REG_DEP_ANTI", "REG_DEP_OUTPUT", "REG_BR_PROB", |
c107334d | 258 | "REG_EXEC_COUNT", "REG_NOALIAS", "REG_SAVE_AREA", |
07ebc930 | 259 | "REG_BR_PRED", "REG_EH_CONTEXT", |
e6cfb550 | 260 | "REG_FRAME_RELATED_EXPR", "REG_EH_REGION", |
c46a37c4 | 261 | "REG_EH_RETHROW", "REG_SAVE_NOTE" }; |
6f29feb1 | 262 | |
bcdaba58 RH |
263 | static void fatal_with_file_and_line PVPROTO((FILE *, const char *, ...)) |
264 | ATTRIBUTE_NORETURN; | |
265 | static void fatal_expected_char PROTO((FILE *, int, int)) ATTRIBUTE_NORETURN; | |
956d6950 | 266 | static void read_name PROTO((char *, FILE *)); |
95d75019 | 267 | static const char *trim_filename PROTO((const char *)); |
956d6950 | 268 | \f |
6f29feb1 JW |
269 | /* Allocate an rtx vector of N elements. |
270 | Store the length, and initialize all elements to zero. */ | |
271 | ||
272 | rtvec | |
273 | rtvec_alloc (n) | |
274 | int n; | |
275 | { | |
276 | rtvec rt; | |
a3770a81 RH |
277 | |
278 | if (ggc_p) | |
279 | rt = ggc_alloc_rtvec (n); | |
280 | else | |
281 | { | |
282 | int i; | |
283 | ||
284 | rt = (rtvec) obstack_alloc (rtl_obstack, | |
285 | sizeof (struct rtvec_def) | |
286 | + (( n - 1) * sizeof (rtx))); | |
287 | ||
288 | /* clear out the vector */ | |
289 | for (i = 0; i < n; i++) | |
290 | rt->elem[i] = 0; | |
291 | } | |
6f29feb1 | 292 | |
395d53bb | 293 | PUT_NUM_ELEM (rt, n); |
6f29feb1 JW |
294 | return rt; |
295 | } | |
296 | ||
297 | /* Allocate an rtx of code CODE. The CODE is stored in the rtx; | |
298 | all the rest is initialized to zero. */ | |
299 | ||
300 | rtx | |
301 | rtx_alloc (code) | |
302 | RTX_CODE code; | |
303 | { | |
304 | rtx rt; | |
6f29feb1 | 305 | |
a3770a81 RH |
306 | if (ggc_p) |
307 | rt = ggc_alloc_rtx (GET_RTX_LENGTH (code)); | |
308 | else | |
309 | { | |
310 | register struct obstack *ob = rtl_obstack; | |
311 | register int nelts = GET_RTX_LENGTH (code); | |
312 | register int length = sizeof (struct rtx_def) | |
313 | + (nelts - 1) * sizeof (rtunion); | |
314 | ||
315 | /* This function is called more than any other in GCC, so we | |
316 | manipulate the obstack directly. | |
317 | ||
318 | Even though rtx objects are word aligned, we may be sharing | |
319 | an obstack with tree nodes, which may have to be double-word | |
320 | aligned. So align our length to the alignment mask in the | |
321 | obstack. */ | |
322 | ||
323 | length = (length + ob->alignment_mask) & ~ ob->alignment_mask; | |
324 | ||
325 | if (ob->chunk_limit - ob->next_free < length) | |
326 | _obstack_newchunk (ob, length); | |
327 | rt = (rtx)ob->object_base; | |
328 | ob->next_free += length; | |
329 | ob->object_base = ob->next_free; | |
330 | ||
331 | /* We want to clear everything up to the FLD array. Normally, | |
332 | this is one int, but we don't want to assume that and it | |
333 | isn't very portable anyway; this is. */ | |
334 | ||
335 | memset (rt, 0, sizeof (struct rtx_def) - sizeof (rtunion)); | |
336 | } | |
2151a093 | 337 | |
6f29feb1 | 338 | PUT_CODE (rt, code); |
6f29feb1 JW |
339 | return rt; |
340 | } | |
9b404774 RS |
341 | |
342 | /* Free the rtx X and all RTL allocated since X. */ | |
343 | ||
344 | void | |
345 | rtx_free (x) | |
346 | rtx x; | |
347 | { | |
a3770a81 RH |
348 | if (!ggc_p) |
349 | obstack_free (rtl_obstack, x); | |
9b404774 | 350 | } |
6f29feb1 JW |
351 | \f |
352 | /* Create a new copy of an rtx. | |
353 | Recursively copies the operands of the rtx, | |
354 | except for those few rtx codes that are sharable. */ | |
355 | ||
356 | rtx | |
357 | copy_rtx (orig) | |
358 | register rtx orig; | |
359 | { | |
360 | register rtx copy; | |
361 | register int i, j; | |
362 | register RTX_CODE code; | |
6f7d635c | 363 | register const char *format_ptr; |
6f29feb1 JW |
364 | |
365 | code = GET_CODE (orig); | |
366 | ||
367 | switch (code) | |
368 | { | |
369 | case REG: | |
370 | case QUEUED: | |
371 | case CONST_INT: | |
372 | case CONST_DOUBLE: | |
373 | case SYMBOL_REF: | |
374 | case CODE_LABEL: | |
375 | case PC: | |
376 | case CC0: | |
cf526dcc | 377 | case SCRATCH: |
0f41302f | 378 | /* SCRATCH must be shared because they represent distinct values. */ |
e9a25f70 | 379 | case ADDRESSOF: |
6f29feb1 | 380 | return orig; |
cf526dcc RK |
381 | |
382 | case CONST: | |
383 | /* CONST can be shared if it contains a SYMBOL_REF. If it contains | |
384 | a LABEL_REF, it isn't sharable. */ | |
385 | if (GET_CODE (XEXP (orig, 0)) == PLUS | |
386 | && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF | |
387 | && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT) | |
388 | return orig; | |
389 | break; | |
390 | ||
cc81e625 JW |
391 | /* A MEM with a constant address is not sharable. The problem is that |
392 | the constant address may need to be reloaded. If the mem is shared, | |
393 | then reloading one copy of this mem will cause all copies to appear | |
394 | to have been reloaded. */ | |
e9a25f70 JL |
395 | |
396 | default: | |
397 | break; | |
6f29feb1 JW |
398 | } |
399 | ||
400 | copy = rtx_alloc (code); | |
a4c6502a MM |
401 | |
402 | /* Copy the various flags, and other information. We assume that | |
403 | all fields need copying, and then clear the fields that should | |
404 | not be copied. That is the sensible default behavior, and forces | |
405 | us to explicitly document why we are *not* copying a flag. */ | |
8db99db2 | 406 | memcpy (copy, orig, sizeof (struct rtx_def) - sizeof (rtunion)); |
a4c6502a MM |
407 | |
408 | /* We do not copy the USED flag, which is used as a mark bit during | |
409 | walks over the RTL. */ | |
410 | copy->used = 0; | |
411 | ||
412 | /* We do not copy JUMP, CALL, or FRAME_RELATED for INSNs. */ | |
413 | if (GET_RTX_CLASS (code) == 'i') | |
414 | { | |
415 | copy->jump = 0; | |
416 | copy->call = 0; | |
417 | copy->frame_related = 0; | |
418 | } | |
6f29feb1 JW |
419 | |
420 | format_ptr = GET_RTX_FORMAT (GET_CODE (copy)); | |
421 | ||
422 | for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++) | |
423 | { | |
e63db8f6 | 424 | copy->fld[i] = orig->fld[i]; |
6f29feb1 JW |
425 | switch (*format_ptr++) |
426 | { | |
427 | case 'e': | |
6f29feb1 JW |
428 | if (XEXP (orig, i) != NULL) |
429 | XEXP (copy, i) = copy_rtx (XEXP (orig, i)); | |
430 | break; | |
431 | ||
432 | case 'E': | |
433 | case 'V': | |
6f29feb1 JW |
434 | if (XVEC (orig, i) != NULL) |
435 | { | |
436 | XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i)); | |
437 | for (j = 0; j < XVECLEN (copy, i); j++) | |
438 | XVECEXP (copy, i, j) = copy_rtx (XVECEXP (orig, i, j)); | |
439 | } | |
440 | break; | |
441 | ||
0dfa1860 MM |
442 | case 'b': |
443 | { | |
444 | bitmap new_bits = BITMAP_OBSTACK_ALLOC (rtl_obstack); | |
445 | bitmap_copy (new_bits, XBITMAP (orig, i)); | |
446 | XBITMAP (copy, i) = new_bits; | |
447 | break; | |
448 | } | |
449 | ||
450 | case 't': | |
c166a311 | 451 | case 'w': |
c166a311 | 452 | case 'i': |
c166a311 CH |
453 | case 's': |
454 | case 'S': | |
e63db8f6 | 455 | case 'u': |
ef178af3 | 456 | case '0': |
e63db8f6 | 457 | /* These are left unchanged. */ |
ef178af3 ZW |
458 | break; |
459 | ||
c166a311 CH |
460 | default: |
461 | abort (); | |
6f29feb1 JW |
462 | } |
463 | } | |
464 | return copy; | |
465 | } | |
466 | ||
467 | /* Similar to `copy_rtx' except that if MAY_SHARE is present, it is | |
468 | placed in the result directly, rather than being copied. */ | |
469 | ||
470 | rtx | |
471 | copy_most_rtx (orig, may_share) | |
472 | register rtx orig; | |
473 | register rtx may_share; | |
474 | { | |
475 | register rtx copy; | |
476 | register int i, j; | |
477 | register RTX_CODE code; | |
6f7d635c | 478 | register const char *format_ptr; |
6f29feb1 JW |
479 | |
480 | if (orig == may_share) | |
481 | return orig; | |
482 | ||
483 | code = GET_CODE (orig); | |
484 | ||
485 | switch (code) | |
486 | { | |
487 | case REG: | |
488 | case QUEUED: | |
489 | case CONST_INT: | |
490 | case CONST_DOUBLE: | |
491 | case SYMBOL_REF: | |
492 | case CODE_LABEL: | |
493 | case PC: | |
494 | case CC0: | |
495 | return orig; | |
e9a25f70 JL |
496 | default: |
497 | break; | |
6f29feb1 JW |
498 | } |
499 | ||
500 | copy = rtx_alloc (code); | |
501 | PUT_MODE (copy, GET_MODE (orig)); | |
502 | copy->in_struct = orig->in_struct; | |
503 | copy->volatil = orig->volatil; | |
504 | copy->unchanging = orig->unchanging; | |
505 | copy->integrated = orig->integrated; | |
506 | ||
507 | format_ptr = GET_RTX_FORMAT (GET_CODE (copy)); | |
508 | ||
509 | for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++) | |
510 | { | |
511 | switch (*format_ptr++) | |
512 | { | |
513 | case 'e': | |
514 | XEXP (copy, i) = XEXP (orig, i); | |
515 | if (XEXP (orig, i) != NULL && XEXP (orig, i) != may_share) | |
516 | XEXP (copy, i) = copy_most_rtx (XEXP (orig, i), may_share); | |
517 | break; | |
f1027406 RK |
518 | |
519 | case 'u': | |
520 | XEXP (copy, i) = XEXP (orig, i); | |
521 | break; | |
6f29feb1 JW |
522 | |
523 | case 'E': | |
524 | case 'V': | |
525 | XVEC (copy, i) = XVEC (orig, i); | |
526 | if (XVEC (orig, i) != NULL) | |
527 | { | |
528 | XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i)); | |
529 | for (j = 0; j < XVECLEN (copy, i); j++) | |
530 | XVECEXP (copy, i, j) | |
531 | = copy_most_rtx (XVECEXP (orig, i, j), may_share); | |
532 | } | |
533 | break; | |
534 | ||
c166a311 CH |
535 | case 'w': |
536 | XWINT (copy, i) = XWINT (orig, i); | |
537 | break; | |
538 | ||
539 | case 'n': | |
540 | case 'i': | |
6f29feb1 JW |
541 | XINT (copy, i) = XINT (orig, i); |
542 | break; | |
c166a311 | 543 | |
8f985ec4 ZW |
544 | case 't': |
545 | XTREE (copy, i) = XTREE (orig, i); | |
546 | break; | |
547 | ||
c166a311 CH |
548 | case 's': |
549 | case 'S': | |
550 | XSTR (copy, i) = XSTR (orig, i); | |
551 | break; | |
552 | ||
ef178af3 ZW |
553 | case '0': |
554 | /* Copy this through the wide int field; that's safest. */ | |
555 | X0WINT (copy, i) = X0WINT (orig, i); | |
556 | break; | |
557 | ||
c166a311 CH |
558 | default: |
559 | abort (); | |
6f29feb1 JW |
560 | } |
561 | } | |
562 | return copy; | |
563 | } | |
ce9d4c6d R |
564 | |
565 | /* Create a new copy of an rtx. Only copy just one level. */ | |
566 | rtx | |
567 | shallow_copy_rtx (orig) | |
568 | rtx orig; | |
569 | { | |
570 | register int i; | |
ce9d4c6d R |
571 | register RTX_CODE code = GET_CODE (orig); |
572 | register rtx copy = rtx_alloc (code); | |
573 | ||
574 | PUT_MODE (copy, GET_MODE (orig)); | |
575 | copy->in_struct = orig->in_struct; | |
576 | copy->volatil = orig->volatil; | |
577 | copy->unchanging = orig->unchanging; | |
578 | copy->integrated = orig->integrated; | |
579 | ||
580 | for (i = 0; i < GET_RTX_LENGTH (code); i++) | |
581 | copy->fld[i] = orig->fld[i]; | |
582 | ||
583 | return copy; | |
584 | } | |
6f29feb1 | 585 | \f |
b5ee7789 CM |
586 | /* This is 1 until after the rtl generation pass. */ |
587 | int rtx_equal_function_value_matters; | |
588 | \f | |
589 | /* Return 1 if X and Y are identical-looking rtx's. | |
590 | This is the Lisp function EQUAL for rtx arguments. */ | |
591 | ||
592 | int | |
593 | rtx_equal_p (x, y) | |
594 | rtx x, y; | |
595 | { | |
596 | register int i; | |
597 | register int j; | |
598 | register enum rtx_code code; | |
599 | register const char *fmt; | |
600 | ||
601 | if (x == y) | |
602 | return 1; | |
603 | if (x == 0 || y == 0) | |
604 | return 0; | |
605 | ||
606 | code = GET_CODE (x); | |
607 | /* Rtx's of different codes cannot be equal. */ | |
608 | if (code != GET_CODE (y)) | |
609 | return 0; | |
610 | ||
611 | /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent. | |
612 | (REG:SI x) and (REG:HI x) are NOT equivalent. */ | |
613 | ||
614 | if (GET_MODE (x) != GET_MODE (y)) | |
615 | return 0; | |
616 | ||
617 | /* REG, LABEL_REF, and SYMBOL_REF can be compared nonrecursively. */ | |
618 | ||
619 | if (code == REG) | |
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))); | |
627 | else if (code == LABEL_REF) | |
628 | return XEXP (x, 0) == XEXP (y, 0); | |
629 | else if (code == SYMBOL_REF) | |
630 | return XSTR (x, 0) == XSTR (y, 0); | |
631 | else if (code == SCRATCH || code == CONST_DOUBLE) | |
632 | return 0; | |
633 | ||
634 | /* Compare the elements. If any pair of corresponding elements | |
635 | fail to match, return 0 for the whole things. */ | |
636 | ||
637 | fmt = GET_RTX_FORMAT (code); | |
638 | for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
639 | { | |
640 | switch (fmt[i]) | |
641 | { | |
642 | case 'w': | |
643 | if (XWINT (x, i) != XWINT (y, i)) | |
644 | return 0; | |
645 | break; | |
646 | ||
647 | case 'n': | |
648 | case 'i': | |
649 | if (XINT (x, i) != XINT (y, i)) | |
650 | return 0; | |
651 | break; | |
652 | ||
653 | case 'V': | |
654 | case 'E': | |
655 | /* Two vectors must have the same length. */ | |
656 | if (XVECLEN (x, i) != XVECLEN (y, i)) | |
657 | return 0; | |
658 | ||
659 | /* And the corresponding elements must match. */ | |
660 | for (j = 0; j < XVECLEN (x, i); j++) | |
661 | if (rtx_equal_p (XVECEXP (x, i, j), XVECEXP (y, i, j)) == 0) | |
662 | return 0; | |
663 | break; | |
664 | ||
665 | case 'e': | |
666 | if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0) | |
667 | return 0; | |
668 | break; | |
669 | ||
670 | case 'S': | |
671 | case 's': | |
672 | if (strcmp (XSTR (x, i), XSTR (y, i))) | |
673 | return 0; | |
674 | break; | |
675 | ||
676 | case 'u': | |
677 | /* These are just backpointers, so they don't matter. */ | |
678 | break; | |
679 | ||
680 | case '0': | |
681 | case 't': | |
682 | break; | |
683 | ||
684 | /* It is believed that rtx's at this level will never | |
685 | contain anything but integers and other rtx's, | |
686 | except for within LABEL_REFs and SYMBOL_REFs. */ | |
687 | default: | |
688 | abort (); | |
689 | } | |
690 | } | |
691 | return 1; | |
692 | } | |
693 | \f | |
6f29feb1 JW |
694 | /* Subroutines of read_rtx. */ |
695 | ||
bcdaba58 RH |
696 | /* The current line number for the file. */ |
697 | int read_rtx_lineno = 1; | |
698 | ||
699 | /* The filename for aborting with file and line. */ | |
700 | const char *read_rtx_filename = "<unknown>"; | |
6f29feb1 JW |
701 | |
702 | static void | |
bcdaba58 | 703 | fatal_with_file_and_line VPROTO((FILE *infile, const char *msg, ...)) |
6f29feb1 | 704 | { |
bcdaba58 RH |
705 | #ifndef ANSI_PROTOTYPES |
706 | FILE *infile; | |
707 | const char *msg; | |
708 | #endif | |
709 | va_list ap; | |
710 | char context[64]; | |
711 | size_t i; | |
712 | int c; | |
713 | ||
714 | VA_START (ap, msg); | |
715 | ||
716 | #ifndef ANSI_PROTOTYPES | |
717 | infile = va_arg (ap, FILE *); | |
718 | msg = va_arg (ap, const char *); | |
719 | #endif | |
720 | ||
721 | fprintf (stderr, "%s:%d: ", read_rtx_filename, read_rtx_lineno); | |
722 | vfprintf (stderr, msg, ap); | |
723 | putc ('\n', stderr); | |
724 | ||
725 | /* Gather some following context. */ | |
726 | for (i = 0; i < sizeof(context)-1; ++i) | |
6f29feb1 JW |
727 | { |
728 | c = getc (infile); | |
bcdaba58 RH |
729 | if (c == EOF) |
730 | break; | |
731 | if (c == '\r' || c == '\n') | |
732 | break; | |
733 | context[i] = c; | |
6f29feb1 | 734 | } |
bcdaba58 RH |
735 | context[i] = '\0'; |
736 | ||
737 | fprintf (stderr, "%s:%d: following context is `%s'\n", | |
738 | read_rtx_filename, read_rtx_lineno, context); | |
739 | ||
740 | va_end (ap); | |
741 | exit (1); | |
742 | } | |
743 | ||
744 | /* Dump code after printing a message. Used when read_rtx finds | |
745 | invalid data. */ | |
746 | ||
747 | static void | |
748 | fatal_expected_char (infile, expected_c, actual_c) | |
749 | FILE *infile; | |
750 | int expected_c, actual_c; | |
751 | { | |
752 | fatal_with_file_and_line (infile, "expected character `%c', found `%c'", | |
753 | expected_c, actual_c); | |
6f29feb1 JW |
754 | } |
755 | ||
756 | /* Read chars from INFILE until a non-whitespace char | |
757 | and return that. Comments, both Lisp style and C style, | |
758 | are treated as whitespace. | |
759 | Tools such as genflags use this function. */ | |
760 | ||
761 | int | |
762 | read_skip_spaces (infile) | |
763 | FILE *infile; | |
764 | { | |
765 | register int c; | |
bcdaba58 | 766 | while (1) |
6f29feb1 | 767 | { |
bcdaba58 RH |
768 | c = getc (infile); |
769 | switch (c) | |
6f29feb1 | 770 | { |
bcdaba58 RH |
771 | case '\n': |
772 | read_rtx_lineno++; | |
773 | break; | |
774 | ||
775 | case ' ': case '\t': case '\f': case '\r': | |
776 | break; | |
777 | ||
778 | case ';': | |
779 | do | |
780 | c = getc (infile); | |
781 | while (c != '\n' && c != EOF); | |
782 | read_rtx_lineno++; | |
783 | break; | |
784 | ||
785 | case '/': | |
786 | { | |
787 | register int prevc; | |
788 | c = getc (infile); | |
789 | if (c != '*') | |
790 | fatal_expected_char (infile, '*', c); | |
6f29feb1 | 791 | |
bcdaba58 RH |
792 | prevc = 0; |
793 | while ((c = getc (infile)) && c != EOF) | |
794 | { | |
795 | if (c == '\n') | |
796 | read_rtx_lineno++; | |
797 | else if (prevc == '*' && c == '/') | |
798 | break; | |
799 | prevc = c; | |
800 | } | |
801 | } | |
802 | break; | |
803 | ||
804 | default: | |
805 | return c; | |
6f29feb1 | 806 | } |
6f29feb1 | 807 | } |
6f29feb1 JW |
808 | } |
809 | ||
810 | /* Read an rtx code name into the buffer STR[]. | |
811 | It is terminated by any of the punctuation chars of rtx printed syntax. */ | |
812 | ||
813 | static void | |
814 | read_name (str, infile) | |
815 | char *str; | |
816 | FILE *infile; | |
817 | { | |
818 | register char *p; | |
819 | register int c; | |
820 | ||
821 | c = read_skip_spaces(infile); | |
822 | ||
823 | p = str; | |
824 | while (1) | |
825 | { | |
826 | if (c == ' ' || c == '\n' || c == '\t' || c == '\f') | |
827 | break; | |
828 | if (c == ':' || c == ')' || c == ']' || c == '"' || c == '/' | |
829 | || c == '(' || c == '[') | |
830 | { | |
831 | ungetc (c, infile); | |
832 | break; | |
833 | } | |
834 | *p++ = c; | |
835 | c = getc (infile); | |
836 | } | |
837 | if (p == str) | |
bcdaba58 RH |
838 | fatal_with_file_and_line (infile, "missing name or number"); |
839 | if (c == '\n') | |
840 | read_rtx_lineno++; | |
6f29feb1 JW |
841 | |
842 | *p = 0; | |
843 | } | |
844 | \f | |
cbe36725 RH |
845 | /* Provide a version of a function to read a long long if the system does |
846 | not provide one. */ | |
847 | #if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ) | |
848 | HOST_WIDE_INT | |
849 | atoll(p) | |
850 | const char *p; | |
851 | { | |
852 | int neg = 0; | |
853 | HOST_WIDE_INT tmp_wide; | |
854 | ||
e9a780ec | 855 | while (ISSPACE(*p)) |
cbe36725 RH |
856 | p++; |
857 | if (*p == '-') | |
858 | neg = 1, p++; | |
859 | else if (*p == '+') | |
860 | p++; | |
861 | ||
862 | tmp_wide = 0; | |
e9a780ec | 863 | while (ISDIGIT(*p)) |
cbe36725 RH |
864 | { |
865 | HOST_WIDE_INT new_wide = tmp_wide*10 + (*p - '0'); | |
866 | if (new_wide < tmp_wide) | |
867 | { | |
868 | /* Return INT_MAX equiv on overflow. */ | |
869 | tmp_wide = (~(unsigned HOST_WIDE_INT)0) >> 1; | |
870 | break; | |
871 | } | |
872 | tmp_wide = new_wide; | |
873 | p++; | |
874 | } | |
875 | ||
876 | if (neg) | |
877 | tmp_wide = -tmp_wide; | |
878 | return tmp_wide; | |
879 | } | |
880 | #endif | |
881 | ||
6f29feb1 JW |
882 | /* Read an rtx in printed representation from INFILE |
883 | and return an actual rtx in core constructed accordingly. | |
884 | read_rtx is not used in the compiler proper, but rather in | |
885 | the utilities gen*.c that construct C code from machine descriptions. */ | |
886 | ||
887 | rtx | |
888 | read_rtx (infile) | |
889 | FILE *infile; | |
890 | { | |
891 | register int i, j, list_counter; | |
892 | RTX_CODE tmp_code; | |
6f7d635c | 893 | register const char *format_ptr; |
6f29feb1 JW |
894 | /* tmp_char is a buffer used for reading decimal integers |
895 | and names of rtx types and machine modes. | |
896 | Therefore, 256 must be enough. */ | |
897 | char tmp_char[256]; | |
898 | rtx return_rtx; | |
899 | register int c; | |
900 | int tmp_int; | |
c166a311 | 901 | HOST_WIDE_INT tmp_wide; |
6f29feb1 JW |
902 | |
903 | /* Linked list structure for making RTXs: */ | |
904 | struct rtx_list | |
905 | { | |
906 | struct rtx_list *next; | |
bcdaba58 | 907 | rtx value; /* Value of this node. */ |
6f29feb1 JW |
908 | }; |
909 | ||
910 | c = read_skip_spaces (infile); /* Should be open paren. */ | |
911 | if (c != '(') | |
bcdaba58 | 912 | fatal_expected_char (infile, '(', c); |
6f29feb1 JW |
913 | |
914 | read_name (tmp_char, infile); | |
915 | ||
916 | tmp_code = UNKNOWN; | |
917 | ||
14a774a9 RK |
918 | for (i = 0; i < NUM_RTX_CODE; i++) |
919 | if (! strcmp (tmp_char, GET_RTX_NAME (i))) | |
920 | { | |
921 | tmp_code = (RTX_CODE) i; /* get value for name */ | |
922 | break; | |
923 | } | |
924 | ||
6f29feb1 | 925 | if (tmp_code == UNKNOWN) |
14a774a9 RK |
926 | fatal ("Unknown rtx read in rtl.read_rtx(). Code name was %s .", tmp_char); |
927 | ||
6f29feb1 JW |
928 | /* (NIL) stands for an expression that isn't there. */ |
929 | if (tmp_code == NIL) | |
930 | { | |
931 | /* Discard the closeparen. */ | |
14a774a9 RK |
932 | while ((c = getc (infile)) && c != ')') |
933 | ; | |
934 | ||
6f29feb1 JW |
935 | return 0; |
936 | } | |
937 | ||
14a774a9 RK |
938 | /* If we end up with an insn expression then we free this space below. */ |
939 | return_rtx = rtx_alloc (tmp_code); | |
6f29feb1 JW |
940 | format_ptr = GET_RTX_FORMAT (GET_CODE (return_rtx)); |
941 | ||
942 | /* If what follows is `: mode ', read it and | |
943 | store the mode in the rtx. */ | |
944 | ||
945 | i = read_skip_spaces (infile); | |
946 | if (i == ':') | |
947 | { | |
6f29feb1 | 948 | read_name (tmp_char, infile); |
14a774a9 RK |
949 | for (j = 0; j < NUM_MACHINE_MODES; j++) |
950 | if (! strcmp (GET_MODE_NAME (j), tmp_char)) | |
6f29feb1 JW |
951 | break; |
952 | ||
14a774a9 RK |
953 | if (j == MAX_MACHINE_MODE) |
954 | fatal ("Unknown mode read in rtl.read_rtx(). Mode name was %s.", | |
955 | tmp_char); | |
956 | ||
957 | PUT_MODE (return_rtx, (enum machine_mode) j); | |
6f29feb1 JW |
958 | } |
959 | else | |
960 | ungetc (i, infile); | |
961 | ||
962 | for (i = 0; i < GET_RTX_LENGTH (GET_CODE (return_rtx)); i++) | |
963 | switch (*format_ptr++) | |
964 | { | |
965 | /* 0 means a field for internal use only. | |
966 | Don't expect it to be present in the input. */ | |
967 | case '0': | |
968 | break; | |
969 | ||
970 | case 'e': | |
971 | case 'u': | |
972 | XEXP (return_rtx, i) = read_rtx (infile); | |
973 | break; | |
974 | ||
975 | case 'V': | |
976 | /* 'V' is an optional vector: if a closeparen follows, | |
977 | just store NULL for this element. */ | |
978 | c = read_skip_spaces (infile); | |
979 | ungetc (c, infile); | |
980 | if (c == ')') | |
981 | { | |
982 | XVEC (return_rtx, i) = 0; | |
983 | break; | |
984 | } | |
985 | /* Now process the vector. */ | |
986 | ||
987 | case 'E': | |
988 | { | |
989 | register struct rtx_list *next_rtx, *rtx_list_link; | |
4399e7a3 | 990 | struct rtx_list *list_rtx = NULL; |
6f29feb1 JW |
991 | |
992 | c = read_skip_spaces (infile); | |
993 | if (c != '[') | |
bcdaba58 | 994 | fatal_expected_char (infile, '[', c); |
6f29feb1 JW |
995 | |
996 | /* add expressions to a list, while keeping a count */ | |
997 | next_rtx = NULL; | |
998 | list_counter = 0; | |
999 | while ((c = read_skip_spaces (infile)) && c != ']') | |
1000 | { | |
1001 | ungetc (c, infile); | |
1002 | list_counter++; | |
1003 | rtx_list_link = (struct rtx_list *) | |
1004 | alloca (sizeof (struct rtx_list)); | |
1005 | rtx_list_link->value = read_rtx (infile); | |
1006 | if (next_rtx == 0) | |
1007 | list_rtx = rtx_list_link; | |
1008 | else | |
1009 | next_rtx->next = rtx_list_link; | |
1010 | next_rtx = rtx_list_link; | |
1011 | rtx_list_link->next = 0; | |
1012 | } | |
1013 | /* get vector length and allocate it */ | |
1014 | XVEC (return_rtx, i) = (list_counter | |
c166a311 | 1015 | ? rtvec_alloc (list_counter) : NULL_RTVEC); |
6f29feb1 JW |
1016 | if (list_counter > 0) |
1017 | { | |
1018 | next_rtx = list_rtx; | |
1019 | for (j = 0; j < list_counter; j++, | |
1020 | next_rtx = next_rtx->next) | |
1021 | XVECEXP (return_rtx, i, j) = next_rtx->value; | |
1022 | } | |
1023 | /* close bracket gotten */ | |
1024 | } | |
1025 | break; | |
1026 | ||
1027 | case 'S': | |
1028 | /* 'S' is an optional string: if a closeparen follows, | |
1029 | just store NULL for this element. */ | |
1030 | c = read_skip_spaces (infile); | |
1031 | ungetc (c, infile); | |
1032 | if (c == ')') | |
1033 | { | |
1034 | XSTR (return_rtx, i) = 0; | |
1035 | break; | |
1036 | } | |
1037 | ||
1038 | case 's': | |
1039 | { | |
1040 | int saw_paren = 0; | |
1041 | register char *stringbuf; | |
6f29feb1 JW |
1042 | |
1043 | c = read_skip_spaces (infile); | |
1044 | if (c == '(') | |
1045 | { | |
1046 | saw_paren = 1; | |
1047 | c = read_skip_spaces (infile); | |
1048 | } | |
1049 | if (c != '"') | |
bcdaba58 | 1050 | fatal_expected_char (infile, '"', c); |
6f29feb1 JW |
1051 | |
1052 | while (1) | |
1053 | { | |
2dcb563f | 1054 | c = getc (infile); /* Read the string */ |
bcdaba58 RH |
1055 | if (c == '\n') |
1056 | read_rtx_lineno++; | |
2dcb563f | 1057 | if (c == '\\') |
6f29feb1 | 1058 | { |
2dcb563f | 1059 | c = getc (infile); /* Read the string */ |
6f29feb1 JW |
1060 | /* \; makes stuff for a C string constant containing |
1061 | newline and tab. */ | |
2dcb563f | 1062 | if (c == ';') |
81dd58a6 RS |
1063 | { |
1064 | obstack_grow (rtl_obstack, "\\n\\t", 4); | |
1065 | continue; | |
1066 | } | |
aece2740 RH |
1067 | if (c == '\n') |
1068 | read_rtx_lineno++; | |
6f29feb1 | 1069 | } |
2dcb563f | 1070 | else if (c == '"') |
6f29feb1 | 1071 | break; |
2dcb563f RS |
1072 | |
1073 | obstack_1grow (rtl_obstack, c); | |
6f29feb1 JW |
1074 | } |
1075 | ||
2dcb563f RS |
1076 | obstack_1grow (rtl_obstack, 0); |
1077 | stringbuf = (char *) obstack_finish (rtl_obstack); | |
6f29feb1 JW |
1078 | |
1079 | if (saw_paren) | |
1080 | { | |
1081 | c = read_skip_spaces (infile); | |
1082 | if (c != ')') | |
bcdaba58 | 1083 | fatal_expected_char (infile, ')', c); |
6f29feb1 JW |
1084 | } |
1085 | XSTR (return_rtx, i) = stringbuf; | |
1086 | } | |
1087 | break; | |
1088 | ||
c166a311 CH |
1089 | case 'w': |
1090 | read_name (tmp_char, infile); | |
1091 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
1092 | tmp_wide = atoi (tmp_char); | |
1093 | #else | |
76d31c63 | 1094 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
c166a311 | 1095 | tmp_wide = atol (tmp_char); |
76d31c63 | 1096 | #else |
cbe36725 RH |
1097 | /* Prefer atoll over atoq, since the former is in the ISO C9X draft. |
1098 | But prefer not to use our hand-rolled function above either. */ | |
1099 | #if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ) | |
c5afbb49 JL |
1100 | tmp_wide = atoll (tmp_char); |
1101 | #else | |
76d31c63 JL |
1102 | tmp_wide = atoq (tmp_char); |
1103 | #endif | |
c5afbb49 | 1104 | #endif |
c166a311 CH |
1105 | #endif |
1106 | XWINT (return_rtx, i) = tmp_wide; | |
1107 | break; | |
1108 | ||
6f29feb1 JW |
1109 | case 'i': |
1110 | case 'n': | |
1111 | read_name (tmp_char, infile); | |
1112 | tmp_int = atoi (tmp_char); | |
1113 | XINT (return_rtx, i) = tmp_int; | |
1114 | break; | |
1115 | ||
1116 | default: | |
1117 | fprintf (stderr, | |
1118 | "switch format wrong in rtl.read_rtx(). format was: %c.\n", | |
1119 | format_ptr[-1]); | |
1120 | fprintf (stderr, "\tfile position: %ld\n", ftell (infile)); | |
1121 | abort (); | |
1122 | } | |
1123 | ||
1124 | c = read_skip_spaces (infile); | |
1125 | if (c != ')') | |
bcdaba58 | 1126 | fatal_expected_char (infile, ')', c); |
6f29feb1 JW |
1127 | |
1128 | return return_rtx; | |
1129 | } | |
987009bf | 1130 | |
b30bce6b | 1131 | #if defined ENABLE_CHECKING && HAVE_GCC_VERSION(2,7) |
ef178af3 ZW |
1132 | void |
1133 | rtl_check_failed_bounds (r, n, file, line, func) | |
1134 | rtx r; | |
1135 | int n; | |
1136 | const char *file; | |
1137 | int line; | |
1138 | const char *func; | |
1139 | { | |
1140 | error ("RTL check: access of elt %d of `%s' with last elt %d", | |
1141 | n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r))-1); | |
1142 | fancy_abort (file, line, func); | |
1143 | } | |
1144 | ||
1145 | void | |
1146 | rtl_check_failed_type1 (r, n, c1, file, line, func) | |
1147 | rtx r; | |
1148 | int n; | |
1149 | int c1; | |
1150 | const char *file; | |
1151 | int line; | |
1152 | const char *func; | |
1153 | { | |
1154 | error ("RTL check: expected elt %d type '%c', have '%c' (rtx %s)", | |
1155 | n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r))); | |
1156 | fancy_abort (file, line, func); | |
1157 | } | |
1158 | ||
1159 | void | |
1160 | rtl_check_failed_type2 (r, n, c1, c2, file, line, func) | |
1161 | rtx r; | |
1162 | int n; | |
1163 | int c1; | |
1164 | int c2; | |
1165 | const char *file; | |
1166 | int line; | |
1167 | const char *func; | |
1168 | { | |
1169 | error ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s)", | |
1170 | n, c1, c2, | |
1171 | GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE(r))); | |
1172 | fancy_abort (file, line, func); | |
1173 | } | |
1174 | ||
83ab3839 RH |
1175 | void |
1176 | rtl_check_failed_code1 (r, code, file, line, func) | |
1177 | rtx r; | |
1178 | enum rtx_code code; | |
1179 | const char *file; | |
1180 | int line; | |
1181 | const char *func; | |
1182 | { | |
1183 | error ("RTL check: expected code `%s', have `%s'", | |
1184 | GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r))); | |
1185 | fancy_abort (file, line, func); | |
1186 | } | |
1187 | ||
1188 | void | |
1189 | rtl_check_failed_code2 (r, code1, code2, file, line, func) | |
1190 | rtx r; | |
1191 | enum rtx_code code1, code2; | |
1192 | const char *file; | |
1193 | int line; | |
1194 | const char *func; | |
1195 | { | |
1196 | error ("RTL check: expected code `%s' or `%s', have `%s'", | |
1197 | GET_RTX_NAME (code1), GET_RTX_NAME (code2), | |
1198 | GET_RTX_NAME (GET_CODE (r))); | |
1199 | fancy_abort (file, line, func); | |
1200 | } | |
1201 | ||
ef178af3 ZW |
1202 | /* XXX Maybe print the vector? */ |
1203 | void | |
1204 | rtvec_check_failed_bounds (r, n, file, line, func) | |
1205 | rtvec r; | |
1206 | int n; | |
1207 | const char *file; | |
1208 | int line; | |
1209 | const char *func; | |
1210 | { | |
1211 | error ("RTL check: access of elt %d of vector with last elt %d", | |
1212 | n, GET_NUM_ELEM (r)-1); | |
1213 | fancy_abort (file, line, func); | |
1214 | } | |
1215 | #endif /* ENABLE_CHECKING */ | |
1216 | ||
987009bf ZW |
1217 | /* These are utility functions used by fatal-error functions all over the |
1218 | code. rtl.c happens to be linked by all the programs that need them, | |
1219 | so these are here. In the future we want to break out all error handling | |
1220 | to its own module. */ | |
1221 | ||
1222 | /* Given a partial pathname as input, return another pathname that | |
1223 | shares no directory elements with the pathname of __FILE__. This | |
1224 | is used by fancy_abort() to print `Internal compiler error in expr.c' | |
1225 | instead of `Internal compiler error in ../../egcs/gcc/expr.c'. */ | |
1226 | static const char * | |
1227 | trim_filename (name) | |
1228 | const char *name; | |
1229 | { | |
aa0b4465 | 1230 | static const char this_file[] = __FILE__; |
987009bf ZW |
1231 | const char *p = name, *q = this_file; |
1232 | ||
1233 | while (*p == *q && *p != 0 && *q != 0) p++, q++; | |
1234 | while (p > name && p[-1] != DIR_SEPARATOR | |
1235 | #ifdef DIR_SEPARATOR_2 | |
1236 | && p[-1] != DIR_SEPARATOR_2 | |
1237 | #endif | |
1238 | ) | |
1239 | p--; | |
1240 | ||
1241 | return p; | |
1242 | } | |
1243 | ||
1244 | /* Report an internal compiler error in a friendly manner and without | |
ef178af3 | 1245 | dumping core. */ |
987009bf | 1246 | |
987009bf ZW |
1247 | void |
1248 | fancy_abort (file, line, function) | |
1249 | const char *file; | |
1250 | int line; | |
1251 | const char *function; | |
1252 | { | |
1253 | if (function == NULL) | |
1254 | function = "?"; | |
1255 | fatal ( | |
1256 | "Internal compiler error in `%s', at %s:%d\n\ | |
1257 | Please submit a full bug report.\n\ | |
1258 | See <URL:http://www.gnu.org/software/gcc/faq.html#bugreport> \ | |
1259 | for instructions.", | |
1260 | function, trim_filename (file), line); | |
1261 | } |