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8da1b058 | 1 | /* Front-end tree definitions for GNU compiler. |
06ceef4e RK |
2 | Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
8da1b058 RS |
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 | |
e9fa0c7c RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
8da1b058 RS |
21 | |
22 | #include "machmode.h" | |
9f8f4efe | 23 | #include "version.h" |
8da1b058 | 24 | |
d6b12657 RK |
25 | #ifndef RTX_CODE |
26 | struct rtx_def; | |
27 | #endif | |
28 | ||
29 | /* Codes of tree nodes */ | |
8da1b058 RS |
30 | |
31 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM, | |
32 | ||
33 | enum tree_code { | |
34 | #include "tree.def" | |
35 | ||
6dc42e49 | 36 | LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for |
8da1b058 RS |
37 | NUM_TREE_CODE. */ |
38 | }; | |
39 | ||
40 | #undef DEFTREECODE | |
41 | ||
8d5e6e25 RK |
42 | /* Number of language-independent tree codes. */ |
43 | #define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE) | |
8da1b058 RS |
44 | |
45 | /* Indexed by enum tree_code, contains a character which is | |
46 | `<' for a comparison expression, `1', for a unary arithmetic | |
47 | expression, `2' for a binary arithmetic expression, `e' for | |
48 | other types of expressions, `r' for a reference, `c' for a | |
49 | constant, `d' for a decl, `t' for a type, `s' for a statement, | |
50 | and `x' for anything else (TREE_LIST, IDENTIFIER, etc). */ | |
51 | ||
0a6969ad JC |
52 | #define MAX_TREE_CODES 256 |
53 | extern char tree_code_type[MAX_TREE_CODES]; | |
54 | #define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)] | |
8da1b058 | 55 | |
4da05956 MM |
56 | /* Returns non-zero iff CLASS is the tree-code class of an |
57 | expression. */ | |
58 | ||
59 | #define IS_EXPR_CODE_CLASS(CLASS) \ | |
8830da36 | 60 | (CLASS == '<' || CLASS == '1' || CLASS == '2' || CLASS == 'e') |
4da05956 | 61 | |
8da1b058 RS |
62 | /* Number of argument-words in each kind of tree-node. */ |
63 | ||
0a6969ad | 64 | extern int tree_code_length[MAX_TREE_CODES]; |
8d5e6e25 | 65 | #define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)] |
8da1b058 RS |
66 | |
67 | /* Names of tree components. */ | |
68 | ||
5f8ded66 | 69 | extern const char *tree_code_name[MAX_TREE_CODES]; |
8da1b058 | 70 | \f |
9df2c88c RK |
71 | /* Classify which part of the compiler has defined a given builtin function. |
72 | Note that we assume below that this is no more than two bits. */ | |
26db82d8 BS |
73 | enum built_in_class |
74 | { | |
75 | NOT_BUILT_IN = 0, | |
76 | BUILT_IN_FRONTEND, | |
77 | BUILT_IN_MD, | |
78 | BUILT_IN_NORMAL | |
79 | }; | |
9df2c88c RK |
80 | |
81 | /* Names for the above. */ | |
fd05eb80 | 82 | extern const char *const built_in_class_names[4]; |
9df2c88c | 83 | |
8da1b058 RS |
84 | /* Codes that identify the various built in functions |
85 | so that expand_call can identify them quickly. */ | |
86 | ||
cb1072f4 | 87 | #define DEF_BUILTIN(x) x, |
8da1b058 RS |
88 | enum built_in_function |
89 | { | |
cb1072f4 | 90 | #include "builtins.def" |
972ded9c RS |
91 | |
92 | /* Upper bound on non-language-specific builtins. */ | |
93 | END_BUILTINS | |
8da1b058 | 94 | }; |
cb1072f4 | 95 | #undef DEF_BUILTIN |
9df2c88c RK |
96 | |
97 | /* Names for the above. */ | |
fd05eb80 | 98 | extern const char *const built_in_names[(int) END_BUILTINS]; |
3ff5f682 KG |
99 | |
100 | /* An array of _DECL trees for the above. */ | |
101 | extern union tree_node *built_in_decls[(int) END_BUILTINS]; | |
8da1b058 RS |
102 | \f |
103 | /* The definition of tree nodes fills the next several pages. */ | |
104 | ||
105 | /* A tree node can represent a data type, a variable, an expression | |
106 | or a statement. Each node has a TREE_CODE which says what kind of | |
107 | thing it represents. Some common codes are: | |
108 | INTEGER_TYPE -- represents a type of integers. | |
109 | ARRAY_TYPE -- represents a type of pointer. | |
110 | VAR_DECL -- represents a declared variable. | |
111 | INTEGER_CST -- represents a constant integer value. | |
112 | PLUS_EXPR -- represents a sum (an expression). | |
113 | ||
114 | As for the contents of a tree node: there are some fields | |
115 | that all nodes share. Each TREE_CODE has various special-purpose | |
116 | fields as well. The fields of a node are never accessed directly, | |
117 | always through accessor macros. */ | |
118 | ||
119 | /* This type is used everywhere to refer to a tree node. */ | |
120 | ||
121 | typedef union tree_node *tree; | |
122 | ||
8da1b058 RS |
123 | /* Every kind of tree node starts with this structure, |
124 | so all nodes have these fields. | |
125 | ||
76c9d226 MM |
126 | See the accessor macros, defined below, for documentation of the |
127 | fields. */ | |
8da1b058 RS |
128 | |
129 | struct tree_common | |
130 | { | |
131 | union tree_node *chain; | |
132 | union tree_node *type; | |
c149cc37 | 133 | ENUM_BITFIELD(tree_code) code : 8; |
8da1b058 RS |
134 | unsigned side_effects_flag : 1; |
135 | unsigned constant_flag : 1; | |
8da1b058 RS |
136 | unsigned addressable_flag : 1; |
137 | unsigned volatile_flag : 1; | |
138 | unsigned readonly_flag : 1; | |
139 | unsigned unsigned_flag : 1; | |
140 | unsigned asm_written_flag: 1; | |
141 | ||
142 | unsigned used_flag : 1; | |
12a22e76 | 143 | unsigned nothrow_flag : 1; |
8da1b058 RS |
144 | unsigned static_flag : 1; |
145 | unsigned public_flag : 1; | |
146 | unsigned private_flag : 1; | |
147 | unsigned protected_flag : 1; | |
a6d7adfd | 148 | unsigned bounded_flag : 1; |
8da1b058 RS |
149 | |
150 | unsigned lang_flag_0 : 1; | |
151 | unsigned lang_flag_1 : 1; | |
152 | unsigned lang_flag_2 : 1; | |
153 | unsigned lang_flag_3 : 1; | |
154 | unsigned lang_flag_4 : 1; | |
155 | unsigned lang_flag_5 : 1; | |
156 | unsigned lang_flag_6 : 1; | |
1f8f4a0b MM |
157 | /* This flag is presently unused. However, language front-ends |
158 | should not make use of this flag; it is reserved for future | |
159 | expansion. */ | |
160 | unsigned dummy : 1; | |
8da1b058 RS |
161 | }; |
162 | ||
a5f99f01 RK |
163 | /* The following table lists the uses of each of the above flags and |
164 | for which types of nodes they are defined. Note that expressions | |
165 | include decls. | |
166 | ||
167 | addressable_flag: | |
168 | ||
169 | TREE_ADDRESSABLE in | |
1febe16b RK |
170 | VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL, |
171 | ..._TYPE, IDENTIFIER_NODE | |
a5f99f01 RK |
172 | |
173 | static_flag: | |
174 | ||
175 | TREE_STATIC in | |
e5e809f4 | 176 | VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR |
a5f99f01 RK |
177 | TREE_NO_UNUSED_WARNING in |
178 | CONVERT_EXPR, NOP_EXPR, COMPOUND_EXPR | |
179 | TREE_VIA_VIRTUAL in | |
180 | TREE_LIST or TREE_VEC | |
181 | TREE_CONSTANT_OVERFLOW in | |
182 | INTEGER_CST, REAL_CST, COMPLEX_CST | |
183 | TREE_SYMBOL_REFERENCED in | |
184 | IDENTIFIER_NODE | |
185 | ||
186 | public_flag: | |
187 | ||
188 | TREE_OVERFLOW in | |
189 | INTEGER_CST, REAL_CST, COMPLEX_CST | |
190 | TREE_PUBLIC in | |
191 | VAR_DECL or FUNCTION_DECL | |
192 | TREE_VIA_PUBLIC in | |
193 | TREE_LIST or TREE_VEC | |
dadafe54 PB |
194 | EXPR_WFL_EMIT_LINE_NOTE in |
195 | EXPR_WITH_FILE_LOCATION | |
a5f99f01 RK |
196 | |
197 | private_flag: | |
198 | ||
199 | TREE_VIA_PRIVATE in | |
200 | TREE_LIST or TREE_VEC | |
201 | TREE_PRIVATE in | |
202 | ??? unspecified nodes | |
203 | ||
204 | protected_flag: | |
205 | ||
206 | TREE_VIA_PROTECTED in | |
207 | TREE_LIST | |
208 | TREE_PROTECTED in | |
209 | BLOCK | |
210 | ??? unspecified nodes | |
211 | ||
212 | side_effects_flag: | |
213 | ||
214 | TREE_SIDE_EFFECTS in | |
215 | all expressions | |
216 | ||
217 | volatile_flag: | |
218 | ||
219 | TREE_THIS_VOLATILE in | |
220 | all expressions | |
221 | TYPE_VOLATILE in | |
222 | ..._TYPE | |
223 | ||
224 | readonly_flag: | |
225 | ||
226 | TREE_READONLY in | |
e5e809f4 | 227 | all expressions |
a5f99f01 RK |
228 | TYPE_READONLY in |
229 | ..._TYPE | |
230 | ||
231 | constant_flag: | |
232 | ||
233 | TREE_CONSTANT in | |
234 | all expressions | |
235 | ||
a5f99f01 RK |
236 | unsigned_flag: |
237 | ||
238 | TREE_UNSIGNED in | |
239 | INTEGER_TYPE, ENUMERAL_TYPE, FIELD_DECL | |
a5f99f01 RK |
240 | DECL_BUILT_IN_NONANSI in |
241 | FUNCTION_DECL | |
242 | TREE_PARMLIST in | |
243 | TREE_PARMLIST (C++) | |
e9a25f70 JL |
244 | SAVE_EXPR_NOPLACEHOLDER in |
245 | SAVE_EXPR | |
a5f99f01 RK |
246 | |
247 | asm_written_flag: | |
248 | ||
249 | TREE_ASM_WRITTEN in | |
250 | VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE | |
251 | BLOCK | |
252 | ||
253 | used_flag: | |
254 | ||
255 | TREE_USED in | |
256 | expressions, IDENTIFIER_NODE | |
257 | ||
12a22e76 | 258 | nothrow_flag: |
a5f99f01 | 259 | |
12a22e76 JM |
260 | TREE_NOTHROW in |
261 | CALL_EXPR, FUNCTION_DECL | |
a5f99f01 | 262 | |
a6d7adfd GM |
263 | bounded_flag: |
264 | ||
265 | TREE_BOUNDED in | |
266 | expressions, VAR_DECL, PARM_DECL, FIELD_DECL, FUNCTION_DECL | |
267 | TYPE_BOUNDED in | |
268 | ..._TYPE | |
269 | */ | |
270 | ||
8da1b058 RS |
271 | /* Define accessors for the fields that all tree nodes have |
272 | (though some fields are not used for all kinds of nodes). */ | |
273 | ||
274 | /* The tree-code says what kind of node it is. | |
275 | Codes are defined in tree.def. */ | |
276 | #define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code) | |
277 | #define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (int) (VALUE)) | |
278 | ||
12b195d9 | 279 | /* When checking is enabled, errors will be generated if a tree node |
8f985ec4 | 280 | is accessed incorrectly. The macros abort with a fatal error. */ |
f4524c9e | 281 | #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007) |
12b195d9 | 282 | |
8784fdcd | 283 | #define TREE_CHECK(t, code) __extension__ \ |
8f985ec4 ZW |
284 | ({ const tree __t = t; \ |
285 | if (TREE_CODE(__t) != (code)) \ | |
fbfc1192 | 286 | tree_check_failed (__t, code, __FILE__, __LINE__, __FUNCTION__); \ |
8f985ec4 | 287 | __t; }) |
8784fdcd | 288 | #define TREE_CLASS_CHECK(t, class) __extension__ \ |
8f985ec4 ZW |
289 | ({ const tree __t = t; \ |
290 | if (TREE_CODE_CLASS(TREE_CODE(__t)) != (class)) \ | |
fbfc1192 | 291 | tree_class_check_failed (__t, class, __FILE__, __LINE__, __FUNCTION__); \ |
8f985ec4 ZW |
292 | __t; }) |
293 | ||
294 | /* These checks have to be special cased. */ | |
8784fdcd | 295 | #define CST_OR_CONSTRUCTOR_CHECK(t) __extension__ \ |
8f985ec4 ZW |
296 | ({ const tree __t = t; \ |
297 | enum tree_code __c = TREE_CODE(__t); \ | |
298 | if (__c != CONSTRUCTOR && TREE_CODE_CLASS(__c) != 'c') \ | |
fbfc1192 | 299 | tree_check_failed (__t, CONSTRUCTOR, __FILE__, __LINE__, __FUNCTION__); \ |
8f985ec4 | 300 | __t; }) |
8784fdcd | 301 | #define EXPR_CHECK(t) __extension__ \ |
8f985ec4 ZW |
302 | ({ const tree __t = t; \ |
303 | char __c = TREE_CODE_CLASS(TREE_CODE(__t)); \ | |
304 | if (__c != 'r' && __c != 's' && __c != '<' \ | |
305 | && __c != '1' && __c != '2' && __c != 'e') \ | |
fbfc1192 | 306 | tree_class_check_failed(__t, 'e', __FILE__, __LINE__, __FUNCTION__); \ |
8f985ec4 ZW |
307 | __t; }) |
308 | ||
58782098 | 309 | extern void tree_check_failed PARAMS ((const tree, enum tree_code, |
f8a83ee3 | 310 | const char *, int, const char *)) |
8f985ec4 | 311 | ATTRIBUTE_NORETURN; |
f8a83ee3 ZW |
312 | extern void tree_class_check_failed PARAMS ((const tree, int, |
313 | const char *, int, const char *)) | |
8f985ec4 ZW |
314 | ATTRIBUTE_NORETURN; |
315 | ||
f4524c9e | 316 | #else /* not ENABLE_TREE_CHECKING, or not gcc */ |
12b195d9 | 317 | |
8f985ec4 ZW |
318 | #define TREE_CHECK(t, code) (t) |
319 | #define TREE_CLASS_CHECK(t, code) (t) | |
320 | #define CST_OR_CONSTRUCTOR_CHECK(t) (t) | |
321 | #define EXPR_CHECK(t) (t) | |
322 | ||
323 | #endif | |
324 | ||
325 | #include "tree-check.h" | |
326 | ||
327 | #define TYPE_CHECK(tree) TREE_CLASS_CHECK (tree, 't') | |
328 | #define DECL_CHECK(tree) TREE_CLASS_CHECK (tree, 'd') | |
329 | #define CST_CHECK(tree) TREE_CLASS_CHECK (tree, 'c') | |
12b195d9 | 330 | |
8da1b058 RS |
331 | /* In all nodes that are expressions, this is the data type of the expression. |
332 | In POINTER_TYPE nodes, this is the type that the pointer points to. | |
0b4565c9 BS |
333 | In ARRAY_TYPE nodes, this is the type of the elements. |
334 | In VECTOR_TYPE nodes, this is the type of the elements. */ | |
8da1b058 RS |
335 | #define TREE_TYPE(NODE) ((NODE)->common.type) |
336 | ||
337 | /* Nodes are chained together for many purposes. | |
338 | Types are chained together to record them for being output to the debugger | |
339 | (see the function `chain_type'). | |
340 | Decls in the same scope are chained together to record the contents | |
341 | of the scope. | |
342 | Statement nodes for successive statements used to be chained together. | |
343 | Often lists of things are represented by TREE_LIST nodes that | |
344 | are chained together. */ | |
345 | ||
346 | #define TREE_CHAIN(NODE) ((NODE)->common.chain) | |
347 | ||
348 | /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs | |
349 | that don't change the machine mode. */ | |
350 | ||
9a6bb3f7 | 351 | #define STRIP_NOPS(EXP) \ |
8da1b058 RS |
352 | while ((TREE_CODE (EXP) == NOP_EXPR \ |
353 | || TREE_CODE (EXP) == CONVERT_EXPR \ | |
354 | || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ | |
9a6bb3f7 | 355 | && TREE_OPERAND (EXP, 0) != error_mark_node \ |
8da1b058 RS |
356 | && (TYPE_MODE (TREE_TYPE (EXP)) \ |
357 | == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \ | |
358 | (EXP) = TREE_OPERAND (EXP, 0); | |
0fafb45e | 359 | |
14a774a9 RK |
360 | /* Like STRIP_NOPS, but don't let the signedness change either. */ |
361 | ||
362 | #define STRIP_SIGN_NOPS(EXP) \ | |
363 | while ((TREE_CODE (EXP) == NOP_EXPR \ | |
364 | || TREE_CODE (EXP) == CONVERT_EXPR \ | |
365 | || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ | |
9a6bb3f7 | 366 | && TREE_OPERAND (EXP, 0) != error_mark_node \ |
14a774a9 RK |
367 | && (TYPE_MODE (TREE_TYPE (EXP)) \ |
368 | == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \ | |
369 | && (TREE_UNSIGNED (TREE_TYPE (EXP)) \ | |
370 | == TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \ | |
371 | (EXP) = TREE_OPERAND (EXP, 0); | |
372 | ||
0fafb45e RS |
373 | /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */ |
374 | ||
375 | #define STRIP_TYPE_NOPS(EXP) \ | |
376 | while ((TREE_CODE (EXP) == NOP_EXPR \ | |
377 | || TREE_CODE (EXP) == CONVERT_EXPR \ | |
378 | || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ | |
9a6bb3f7 | 379 | && TREE_OPERAND (EXP, 0) != error_mark_node \ |
0fafb45e RS |
380 | && (TREE_TYPE (EXP) \ |
381 | == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \ | |
382 | (EXP) = TREE_OPERAND (EXP, 0); | |
87291138 RK |
383 | |
384 | /* Nonzero if TYPE represents an integral type. Note that we do not | |
385 | include COMPLEX types here. */ | |
386 | ||
387 | #define INTEGRAL_TYPE_P(TYPE) \ | |
388 | (TREE_CODE (TYPE) == INTEGER_TYPE || TREE_CODE (TYPE) == ENUMERAL_TYPE \ | |
389 | || TREE_CODE (TYPE) == BOOLEAN_TYPE || TREE_CODE (TYPE) == CHAR_TYPE) | |
390 | ||
391 | /* Nonzero if TYPE represents a floating-point type, including complex | |
392 | floating-point types. */ | |
393 | ||
394 | #define FLOAT_TYPE_P(TYPE) \ | |
395 | (TREE_CODE (TYPE) == REAL_TYPE \ | |
396 | || (TREE_CODE (TYPE) == COMPLEX_TYPE \ | |
397 | && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)) | |
947765f9 PB |
398 | |
399 | /* Nonzero if TYPE represents an aggregate (multi-component) type. */ | |
400 | ||
401 | #define AGGREGATE_TYPE_P(TYPE) \ | |
402 | (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \ | |
403 | || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE \ | |
404 | || TREE_CODE (TYPE) == SET_TYPE) | |
9e6cfc43 | 405 | |
a6d7adfd GM |
406 | /* Nonzero if TYPE represents an unbounded pointer or unbounded |
407 | reference type. (It should be renamed to INDIRECT_TYPE_P.) */ | |
9e6cfc43 JM |
408 | |
409 | #define POINTER_TYPE_P(TYPE) \ | |
410 | (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE) | |
555f90c5 | 411 | |
a6d7adfd GM |
412 | /* Nonzero if TYPE represents a bounded pointer or bounded reference type. */ |
413 | ||
414 | #define BOUNDED_INDIRECT_TYPE_P(TYPE) \ | |
415 | (TREE_CODE (TYPE) == RECORD_TYPE && TREE_TYPE (TYPE)) | |
416 | ||
417 | /* Nonzero if TYPE represents a bounded pointer type. */ | |
418 | ||
419 | #define BOUNDED_POINTER_TYPE_P(TYPE) \ | |
420 | (BOUNDED_INDIRECT_TYPE_P (TYPE) \ | |
421 | && TREE_CODE (TYPE_BOUNDED_SUBTYPE (TYPE)) == POINTER_TYPE) | |
422 | ||
423 | /* Nonzero if TYPE represents a bounded reference type. Bounded | |
424 | reference types have two specific uses: (1) When a reference is | |
425 | seated to a variable-length RECORD_TYPE that has an array of | |
426 | indeterminate length as its final field. For all other objects, it | |
427 | is sufficient to check bounds at the time the reference is seated, | |
428 | and assume that all future uses of the reference are safe, since | |
429 | the address of references cannot change. (2) When a reference | |
430 | supertype is seated to an subtype object. The bounds "remember" | |
431 | the true size of the complete object, so that subsequent upcasts of | |
432 | the address of the reference will be checked properly (is such a | |
433 | thing valid C++?). */ | |
434 | ||
435 | #define BOUNDED_REFERENCE_TYPE_P(TYPE) \ | |
436 | (BOUNDED_INDIRECT_TYPE_P (TYPE) \ | |
437 | && TREE_CODE (TYPE_BOUNDED_SUBTYPE (TYPE)) == REFERENCE_TYPE) | |
438 | ||
439 | /* Nonzero if TYPE represents a pointer or reference type, either | |
440 | bounded or unbounded. */ | |
441 | ||
442 | #define MAYBE_BOUNDED_INDIRECT_TYPE_P(TYPE) \ | |
443 | (POINTER_TYPE_P (TYPE) || BOUNDED_INDIRECT_TYPE_P (TYPE)) | |
444 | ||
445 | /* Nonzero if TYPE represents a pointer type, either bounded or unbounded. */ | |
446 | ||
447 | #define MAYBE_BOUNDED_POINTER_TYPE_P(TYPE) \ | |
448 | (TREE_CODE (TYPE) == POINTER_TYPE || BOUNDED_POINTER_TYPE_P (TYPE)) | |
449 | ||
450 | /* Nonzero if TYPE represents a reference type, either bounded or unbounded. */ | |
451 | ||
452 | #define MAYBE_BOUNDED_REFERENCE_TYPE_P(TYPE) \ | |
453 | (TREE_CODE (TYPE) == REFERENCE_TYPE || BOUNDED_REFERENCE_TYPE_P (TYPE)) | |
454 | ||
d0f062fb NS |
455 | /* Nonzero if this type is a complete type. */ |
456 | #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE) | |
457 | ||
71653180 | 458 | /* Nonzero if this type is the (possibly qualified) void type. */ |
e7cd085f | 459 | #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE) |
71653180 | 460 | |
d0f062fb NS |
461 | /* Nonzero if this type is complete or is cv void. */ |
462 | #define COMPLETE_OR_VOID_TYPE_P(NODE) \ | |
71653180 | 463 | (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE)) |
d0f062fb NS |
464 | |
465 | /* Nonzero if this type is complete or is an array with unspecified bound. */ | |
466 | #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \ | |
467 | (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : NODE)) | |
468 | ||
555f90c5 JM |
469 | /* Nonzero if TYPE represents a type. */ |
470 | ||
471 | #define TYPE_P(TYPE) (TREE_CODE_CLASS (TREE_CODE (TYPE)) == 't') | |
8da1b058 RS |
472 | \f |
473 | /* Define many boolean fields that all tree nodes have. */ | |
474 | ||
475 | /* In VAR_DECL nodes, nonzero means address of this is needed. | |
476 | So it cannot be in a register. | |
477 | In a FUNCTION_DECL, nonzero means its address is needed. | |
478 | So it must be compiled even if it is an inline function. | |
1febe16b RK |
479 | In a FIELD_DECL node, it means that the programmer is permitted to |
480 | construct the address of this field. This is used for aliasing | |
481 | purposes: see record_component_aliases. | |
8da1b058 RS |
482 | In CONSTRUCTOR nodes, it means object constructed must be in memory. |
483 | In LABEL_DECL nodes, it means a goto for this label has been seen | |
484 | from a place outside all binding contours that restore stack levels. | |
485 | In ..._TYPE nodes, it means that objects of this type must | |
486 | be fully addressable. This means that pieces of this | |
487 | object cannot go into register parameters, for example. | |
488 | In IDENTIFIER_NODEs, this means that some extern decl for this name | |
489 | had its address taken. That matters for inline functions. */ | |
490 | #define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag) | |
491 | ||
492 | /* In a VAR_DECL, nonzero means allocate static storage. | |
9f86614b | 493 | In a FUNCTION_DECL, nonzero if function has been defined. |
8da1b058 RS |
494 | In a CONSTRUCTOR, nonzero means allocate static storage. */ |
495 | #define TREE_STATIC(NODE) ((NODE)->common.static_flag) | |
496 | ||
248c0f74 JM |
497 | /* In a CONVERT_EXPR, NOP_EXPR or COMPOUND_EXPR, this means the node was |
498 | made implicitly and should not lead to an "unused value" warning. */ | |
8da1b058 RS |
499 | #define TREE_NO_UNUSED_WARNING(NODE) ((NODE)->common.static_flag) |
500 | ||
501 | /* Nonzero for a TREE_LIST or TREE_VEC node means that the derivation | |
502 | chain is via a `virtual' declaration. */ | |
503 | #define TREE_VIA_VIRTUAL(NODE) ((NODE)->common.static_flag) | |
504 | ||
ae202b56 RK |
505 | /* In an INTEGER_CST, REAL_CST, or COMPLEX_CST, this means there was an |
506 | overflow in folding. This is distinct from TREE_OVERFLOW because ANSI C | |
507 | requires a diagnostic when overflows occur in constant expressions. */ | |
261450e8 PE |
508 | #define TREE_CONSTANT_OVERFLOW(NODE) ((NODE)->common.static_flag) |
509 | ||
d3568529 JM |
510 | /* In an IDENTIFIER_NODE, this means that assemble_name was called with |
511 | this string as an argument. */ | |
512 | #define TREE_SYMBOL_REFERENCED(NODE) ((NODE)->common.static_flag) | |
513 | ||
ae202b56 RK |
514 | /* In an INTEGER_CST, REAL_CST, of COMPLEX_CST, this means there was an |
515 | overflow in folding, and no warning has been issued for this subexpression. | |
261450e8 PE |
516 | TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW, but not vice versa. */ |
517 | #define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag) | |
518 | ||
8da1b058 RS |
519 | /* In a VAR_DECL or FUNCTION_DECL, |
520 | nonzero means name is to be accessible from outside this module. | |
858a47b1 | 521 | In an identifier node, nonzero means an external declaration |
6dc42e49 | 522 | accessible from outside this module was previously seen |
8da1b058 RS |
523 | for this name in an inner scope. */ |
524 | #define TREE_PUBLIC(NODE) ((NODE)->common.public_flag) | |
525 | ||
526 | /* Nonzero for TREE_LIST or TREE_VEC node means that the path to the | |
527 | base class is via a `public' declaration, which preserves public | |
528 | fields from the base class as public. */ | |
529 | #define TREE_VIA_PUBLIC(NODE) ((NODE)->common.public_flag) | |
530 | ||
9e5386db MS |
531 | /* Ditto, for `private' declarations. */ |
532 | #define TREE_VIA_PRIVATE(NODE) ((NODE)->common.private_flag) | |
533 | ||
534 | /* Nonzero for TREE_LIST node means that the path to the | |
535 | base class is via a `protected' declaration, which preserves | |
536 | protected fields from the base class as protected. | |
537 | OVERLOADED. */ | |
026380ff | 538 | #define TREE_VIA_PROTECTED(NODE) ((NODE)->common.protected_flag) |
9e5386db | 539 | |
8da1b058 RS |
540 | /* In any expression, nonzero means it has side effects or reevaluation |
541 | of the whole expression could produce a different value. | |
542 | This is set if any subexpression is a function call, a side effect | |
543 | or a reference to a volatile variable. | |
544 | In a ..._DECL, this is set only if the declaration said `volatile'. */ | |
545 | #define TREE_SIDE_EFFECTS(NODE) ((NODE)->common.side_effects_flag) | |
546 | ||
547 | /* Nonzero means this expression is volatile in the C sense: | |
548 | its address should be of type `volatile WHATEVER *'. | |
549 | In other words, the declared item is volatile qualified. | |
550 | This is used in _DECL nodes and _REF nodes. | |
551 | ||
552 | In a ..._TYPE node, means this type is volatile-qualified. | |
553 | But use TYPE_VOLATILE instead of this macro when the node is a type, | |
554 | because eventually we may make that a different bit. | |
555 | ||
556 | If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */ | |
557 | #define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag) | |
558 | ||
559 | /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node, | |
560 | nonzero means it may not be the lhs of an assignment. | |
561 | In a ..._TYPE node, means this type is const-qualified | |
562 | (but the macro TYPE_READONLY should be used instead of this macro | |
563 | when the node is a type). */ | |
564 | #define TREE_READONLY(NODE) ((NODE)->common.readonly_flag) | |
565 | ||
566 | /* Value of expression is constant. | |
567 | Always appears in all ..._CST nodes. | |
568 | May also appear in an arithmetic expression, an ADDR_EXPR or a CONSTRUCTOR | |
569 | if the value is constant. */ | |
570 | #define TREE_CONSTANT(NODE) ((NODE)->common.constant_flag) | |
571 | ||
8da1b058 RS |
572 | /* In INTEGER_TYPE or ENUMERAL_TYPE nodes, means an unsigned type. |
573 | In FIELD_DECL nodes, means an unsigned bit field. | |
574 | The same bit is used in functions as DECL_BUILT_IN_NONANSI. */ | |
575 | #define TREE_UNSIGNED(NODE) ((NODE)->common.unsigned_flag) | |
576 | ||
91ce572a CC |
577 | #define TYPE_TRAP_SIGNED(NODE) (flag_trapv && ! TREE_UNSIGNED (NODE)) |
578 | ||
8da1b058 RS |
579 | /* Nonzero in a VAR_DECL means assembler code has been written. |
580 | Nonzero in a FUNCTION_DECL means that the function has been compiled. | |
581 | This is interesting in an inline function, since it might not need | |
582 | to be compiled separately. | |
3635a54b | 583 | Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE |
9f86614b RS |
584 | if the sdb debugging info for the type has been written. |
585 | In a BLOCK node, nonzero if reorder_blocks has already seen this block. */ | |
8da1b058 RS |
586 | #define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag) |
587 | ||
588 | /* Nonzero in a _DECL if the name is used in its scope. | |
589 | Nonzero in an expr node means inhibit warning if value is unused. | |
590 | In IDENTIFIER_NODEs, this means that some extern decl for this name | |
591 | was used. */ | |
592 | #define TREE_USED(NODE) ((NODE)->common.used_flag) | |
593 | ||
12a22e76 JM |
594 | /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw |
595 | an exception. In a CALL_EXPR, nonzero means the call cannot throw. */ | |
596 | #define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag) | |
8da1b058 | 597 | |
9f86614b | 598 | /* Used in classes in C++. */ |
8da1b058 | 599 | #define TREE_PRIVATE(NODE) ((NODE)->common.private_flag) |
9f86614b RS |
600 | /* Used in classes in C++. |
601 | In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */ | |
8da1b058 RS |
602 | #define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag) |
603 | ||
a6d7adfd GM |
604 | /* In a ..._TYPE node, nonzero means that the type's size and layout, |
605 | (or the size and layout of its arguments and/or return value in the | |
606 | case of a FUNCTION_TYPE or METHOD_TYPE) was changed by the presence | |
607 | of pointer bounds. Use TYPE_BOUNDED instead of this macro when the | |
608 | node is a type, because eventually we may make that a different | |
609 | bit. TYPE_BOUNDED doesn't mean that this type is a bounded indirect | |
610 | type--use BOUNDED_POINTER_TYPE_P, BOUNDED_REFERENCE_TYPE_P, | |
611 | BOUNDED_INDIRECT_TYPE_P to test for that. | |
612 | ||
613 | In a FUNCTION_DECL, nonzero means that the size and layout of one | |
614 | of its arguments and/or return value was changed by the presence of | |
615 | pointer bounds. This value can differ from the value of | |
616 | TYPE_BOUNDED (TREE_TYPE (fundecl)) if the function was implicitly | |
617 | declared, then later called with pointer args, or was declared with | |
618 | a variable argument list and is later called with pointer values in | |
619 | the variable argument list. | |
620 | ||
621 | In a VAR_DECL, PARM_DECL or FIELD_DECL, TREE_BOUNDED matches the value | |
622 | of the decl's type's BOUNDED_POINTER_TYPE_P. | |
623 | ||
624 | In a CONSTRUCTOR or other expression, nonzero means the value is a | |
625 | bounded pointer. It is insufficient to determine the boundedness | |
626 | of an expression EXP with BOUNDED_POINTER_TYPE_P (TREE_TYPE (EXP)), | |
627 | since we allow pointer to be temporarily cast to integer for | |
628 | rounding up to an alignment boudary in a way that preserves the | |
629 | pointer's bounds. | |
630 | ||
631 | In an IDENTIFIER_NODE, nonzero means that the name is prefixed with | |
632 | BP_PREFIX (see varasm.c). This occurs for the DECL_ASSEMBLER_NAME | |
633 | of a function that has bounded pointer(s) for its return type and/or | |
634 | argument type(s). */ | |
635 | ||
636 | #define TREE_BOUNDED(NODE) ((NODE)->common.bounded_flag) | |
637 | ||
9f86614b | 638 | /* These flags are available for each language front end to use internally. */ |
8da1b058 RS |
639 | #define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0) |
640 | #define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1) | |
641 | #define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2) | |
642 | #define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3) | |
643 | #define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4) | |
644 | #define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5) | |
645 | #define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6) | |
646 | \f | |
647 | /* Define additional fields and accessors for nodes representing constants. */ | |
648 | ||
e5d70561 RK |
649 | /* In an INTEGER_CST node. These two together make a 2-word integer. |
650 | If the data type is signed, the value is sign-extended to 2 words | |
8da1b058 | 651 | even though not all of them may really be in use. |
e5d70561 | 652 | In an unsigned constant shorter than 2 words, the extra bits are 0. */ |
2afaa41c GM |
653 | #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst) |
654 | #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low) | |
655 | #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high) | |
8da1b058 RS |
656 | |
657 | #define INT_CST_LT(A, B) \ | |
658 | (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \ | |
659 | || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \ | |
05bccae2 | 660 | && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B))) |
8da1b058 RS |
661 | |
662 | #define INT_CST_LT_UNSIGNED(A, B) \ | |
e5d70561 RK |
663 | (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ |
664 | < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \ | |
665 | || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ | |
05bccae2 RK |
666 | == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \ |
667 | && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B))) | |
8da1b058 RS |
668 | |
669 | struct tree_int_cst | |
670 | { | |
2bf105ab | 671 | struct tree_common common; |
8e15f736 RK |
672 | struct rtx_def *rtl; /* acts as link to register transfer language |
673 | (rtl) info */ | |
2afaa41c GM |
674 | /* A sub-struct is necessary here because the function `const_hash' |
675 | wants to scan both words as a unit and taking the address of the | |
676 | sub-struct yields the properly inclusive bounded pointer. */ | |
677 | struct { | |
678 | unsigned HOST_WIDE_INT low; | |
679 | HOST_WIDE_INT high; | |
680 | } int_cst; | |
8da1b058 RS |
681 | }; |
682 | ||
683 | /* In REAL_CST, STRING_CST, COMPLEX_CST nodes, and CONSTRUCTOR nodes, | |
684 | and generally in all kinds of constants that could | |
685 | be given labels (rather than being immediate). */ | |
686 | ||
12b195d9 | 687 | #define TREE_CST_RTL(NODE) (CST_OR_CONSTRUCTOR_CHECK (NODE)->real_cst.rtl) |
8da1b058 RS |
688 | |
689 | /* In a REAL_CST node. */ | |
690 | /* We can represent a real value as either a `double' or a string. | |
691 | Strings don't allow for any optimization, but they do allow | |
692 | for cross-compilation. */ | |
693 | ||
12b195d9 | 694 | #define TREE_REAL_CST(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst) |
8da1b058 RS |
695 | |
696 | #include "real.h" | |
697 | ||
698 | struct tree_real_cst | |
699 | { | |
2bf105ab | 700 | struct tree_common common; |
8da1b058 RS |
701 | struct rtx_def *rtl; /* acts as link to register transfer language |
702 | (rtl) info */ | |
703 | REAL_VALUE_TYPE real_cst; | |
704 | }; | |
705 | ||
706 | /* In a STRING_CST */ | |
12b195d9 ML |
707 | #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length) |
708 | #define TREE_STRING_POINTER(NODE) (STRING_CST_CHECK (NODE)->string.pointer) | |
8da1b058 RS |
709 | |
710 | struct tree_string | |
711 | { | |
2bf105ab | 712 | struct tree_common common; |
8da1b058 RS |
713 | struct rtx_def *rtl; /* acts as link to register transfer language |
714 | (rtl) info */ | |
715 | int length; | |
520a57c8 | 716 | const char *pointer; |
8da1b058 RS |
717 | }; |
718 | ||
719 | /* In a COMPLEX_CST node. */ | |
12b195d9 ML |
720 | #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real) |
721 | #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag) | |
8da1b058 RS |
722 | |
723 | struct tree_complex | |
724 | { | |
2bf105ab | 725 | struct tree_common common; |
8da1b058 RS |
726 | struct rtx_def *rtl; /* acts as link to register transfer language |
727 | (rtl) info */ | |
728 | union tree_node *real; | |
729 | union tree_node *imag; | |
730 | }; | |
731 | \f | |
732 | /* Define fields and accessors for some special-purpose tree nodes. */ | |
733 | ||
12b195d9 ML |
734 | #define IDENTIFIER_LENGTH(NODE) (IDENTIFIER_NODE_CHECK (NODE)->identifier.length) |
735 | #define IDENTIFIER_POINTER(NODE) (IDENTIFIER_NODE_CHECK (NODE)->identifier.pointer) | |
8da1b058 RS |
736 | |
737 | struct tree_identifier | |
738 | { | |
2bf105ab | 739 | struct tree_common common; |
8da1b058 | 740 | int length; |
63ad61ed | 741 | const char *pointer; |
8da1b058 RS |
742 | }; |
743 | ||
744 | /* In a TREE_LIST node. */ | |
12b195d9 ML |
745 | #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose) |
746 | #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value) | |
8da1b058 RS |
747 | |
748 | struct tree_list | |
749 | { | |
2bf105ab | 750 | struct tree_common common; |
8da1b058 RS |
751 | union tree_node *purpose; |
752 | union tree_node *value; | |
753 | }; | |
754 | ||
755 | /* In a TREE_VEC node. */ | |
12b195d9 ML |
756 | #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length) |
757 | #define TREE_VEC_ELT(NODE,I) (TREE_VEC_CHECK (NODE)->vec.a[I]) | |
52267fcb | 758 | #define TREE_VEC_END(NODE) ((void) TREE_VEC_CHECK (NODE),&((NODE)->vec.a[(NODE)->vec.length])) |
8da1b058 RS |
759 | |
760 | struct tree_vec | |
761 | { | |
2bf105ab | 762 | struct tree_common common; |
8da1b058 RS |
763 | int length; |
764 | union tree_node *a[1]; | |
765 | }; | |
766 | ||
767 | /* Define fields and accessors for some nodes that represent expressions. */ | |
768 | ||
769 | /* In a SAVE_EXPR node. */ | |
770 | #define SAVE_EXPR_CONTEXT(NODE) TREE_OPERAND(NODE, 1) | |
12b195d9 | 771 | #define SAVE_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[2]) |
e9a25f70 | 772 | #define SAVE_EXPR_NOPLACEHOLDER(NODE) TREE_UNSIGNED (NODE) |
d26f8097 MM |
773 | /* Nonzero if the SAVE_EXPRs value should be kept, even if it occurs |
774 | both in normal code and in a handler. (Normally, in a handler, all | |
775 | SAVE_EXPRs are unsaved, meaning that there values are | |
776 | recalculated.) */ | |
777 | #define SAVE_EXPR_PERSISTENT_P(NODE) TREE_ASM_WRITTEN (NODE) | |
8da1b058 RS |
778 | |
779 | /* In a RTL_EXPR node. */ | |
12b195d9 ML |
780 | #define RTL_EXPR_SEQUENCE(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[0]) |
781 | #define RTL_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[1]) | |
8da1b058 | 782 | |
8da1b058 RS |
783 | /* In a CONSTRUCTOR node. */ |
784 | #define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND (NODE, 1) | |
785 | ||
61131fa2 | 786 | /* In ordinary expression nodes. */ |
12b195d9 ML |
787 | #define TREE_OPERAND(NODE, I) (EXPR_CHECK (NODE)->exp.operands[I]) |
788 | #define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity) | |
61131fa2 | 789 | |
40edd0bd APB |
790 | /* In a LABELED_BLOCK_EXPR node. */ |
791 | #define LABELED_BLOCK_LABEL(NODE) TREE_OPERAND (NODE, 0) | |
792 | #define LABELED_BLOCK_BODY(NODE) TREE_OPERAND (NODE, 1) | |
793 | ||
794 | /* In a EXIT_BLOCK_EXPR node. */ | |
795 | #define EXIT_BLOCK_LABELED_BLOCK(NODE) TREE_OPERAND (NODE, 0) | |
796 | #define EXIT_BLOCK_RETURN(NODE) TREE_OPERAND (NODE, 1) | |
797 | ||
798 | /* In a LOOP_EXPR node. */ | |
799 | #define LOOP_EXPR_BODY(NODE) TREE_OPERAND (NODE, 0) | |
800 | ||
dadafe54 | 801 | /* In a EXPR_WITH_FILE_LOCATION node. */ |
bf1e5319 | 802 | #define EXPR_WFL_NODE(NODE) TREE_OPERAND((NODE), 0) |
86fff623 MM |
803 | #define EXPR_WFL_FILENAME(NODE) \ |
804 | (IDENTIFIER_POINTER (EXPR_WFL_FILENAME_NODE ((NODE)))) | |
805 | #define EXPR_WFL_FILENAME_NODE(NODE) TREE_OPERAND((NODE), 1) | |
12b195d9 ML |
806 | #define EXPR_WFL_LINENO(NODE) (EXPR_CHECK (NODE)->exp.complexity >> 12) |
807 | #define EXPR_WFL_COLNO(NODE) (EXPR_CHECK (NODE)->exp.complexity & 0xfff) | |
808 | #define EXPR_WFL_LINECOL(NODE) (EXPR_CHECK (NODE)->exp.complexity) | |
bf1e5319 APB |
809 | #define EXPR_WFL_SET_LINECOL(NODE, LINE, COL) \ |
810 | (EXPR_WFL_LINECOL(NODE) = ((LINE) << 12) | ((COL) & 0xfff)) | |
dadafe54 | 811 | #define EXPR_WFL_EMIT_LINE_NOTE(NODE) ((NODE)->common.public_flag) |
bf1e5319 | 812 | |
61131fa2 RS |
813 | struct tree_exp |
814 | { | |
2bf105ab | 815 | struct tree_common common; |
61131fa2 RS |
816 | int complexity; |
817 | union tree_node *operands[1]; | |
818 | }; | |
819 | \f | |
8da1b058 | 820 | /* In a BLOCK node. */ |
12b195d9 | 821 | #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars) |
12b195d9 ML |
822 | #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks) |
823 | #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext) | |
8da1b058 RS |
824 | /* Note: when changing this, make sure to find the places |
825 | that use chainon or nreverse. */ | |
826 | #define BLOCK_CHAIN(NODE) TREE_CHAIN (NODE) | |
12b195d9 ML |
827 | #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin) |
828 | #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag) | |
8da1b058 RS |
829 | |
830 | /* Nonzero means that this block is prepared to handle exceptions | |
831 | listed in the BLOCK_VARS slot. */ | |
12b195d9 | 832 | #define BLOCK_HANDLER_BLOCK(NODE) (BLOCK_CHECK (NODE)->block.handler_block_flag) |
8da1b058 | 833 | |
18c038b9 MM |
834 | /* An index number for this block. These values are not guaranteed to |
835 | be unique across functions -- whether or not they are depends on | |
836 | the debugging output format in use. */ | |
837 | #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num) | |
838 | ||
61131fa2 | 839 | struct tree_block |
8da1b058 | 840 | { |
2bf105ab | 841 | struct tree_common common; |
61131fa2 RS |
842 | |
843 | unsigned handler_block_flag : 1; | |
844 | unsigned abstract_flag : 1; | |
18c038b9 | 845 | unsigned block_num : 30; |
61131fa2 RS |
846 | |
847 | union tree_node *vars; | |
61131fa2 RS |
848 | union tree_node *subblocks; |
849 | union tree_node *supercontext; | |
850 | union tree_node *abstract_origin; | |
8da1b058 RS |
851 | }; |
852 | \f | |
853 | /* Define fields and accessors for nodes representing data types. */ | |
854 | ||
855 | /* See tree.def for documentation of the use of these fields. | |
856 | Look at the documentation of the various ..._TYPE tree codes. */ | |
857 | ||
12b195d9 ML |
858 | #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid) |
859 | #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size) | |
860 | #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit) | |
861 | #define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode) | |
862 | #define TYPE_VALUES(NODE) (TYPE_CHECK (NODE)->type.values) | |
863 | #define TYPE_DOMAIN(NODE) (TYPE_CHECK (NODE)->type.values) | |
864 | #define TYPE_FIELDS(NODE) (TYPE_CHECK (NODE)->type.values) | |
865 | #define TYPE_METHODS(NODE) (TYPE_CHECK (NODE)->type.maxval) | |
866 | #define TYPE_VFIELD(NODE) (TYPE_CHECK (NODE)->type.minval) | |
867 | #define TYPE_ARG_TYPES(NODE) (TYPE_CHECK (NODE)->type.values) | |
868 | #define TYPE_METHOD_BASETYPE(NODE) (TYPE_CHECK (NODE)->type.maxval) | |
869 | #define TYPE_OFFSET_BASETYPE(NODE) (TYPE_CHECK (NODE)->type.maxval) | |
870 | #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to) | |
871 | #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to) | |
872 | #define TYPE_MIN_VALUE(NODE) (TYPE_CHECK (NODE)->type.minval) | |
873 | #define TYPE_MAX_VALUE(NODE) (TYPE_CHECK (NODE)->type.maxval) | |
874 | #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision) | |
875 | #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address) | |
876 | #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer) | |
877 | #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name) | |
878 | #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant) | |
879 | #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant) | |
12b195d9 ML |
880 | #define TYPE_NONCOPIED_PARTS(NODE) (TYPE_CHECK (NODE)->type.noncopied_parts) |
881 | #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context) | |
12b195d9 | 882 | #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific) |
8da1b058 | 883 | |
4061f623 BS |
884 | /* For a VECTOR_TYPE node, this describes a different type which is emitted |
885 | in the debugging output. We use this to describe a vector as a | |
886 | structure containing an array. */ | |
887 | #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (TYPE_CHECK (NODE)->type.values) | |
888 | ||
a6d7adfd GM |
889 | /* Indirect types present difficulties because they may be represented |
890 | as either POINTER_TYPE/REFERENCE_TYPE nodes (unbounded) or as | |
891 | RECORD_TYPE nodes (bounded). Bounded and unbounded pointers might | |
892 | be logically equivalent, but physically different. Simple | |
893 | comparison of the main variant only tells if the types are | |
894 | logically equivalent. Use this predicate to compare for physical | |
895 | equivalency. */ | |
896 | ||
897 | /* Types have the same main variant, and have the same boundedness. */ | |
898 | #define TYPE_MAIN_VARIANTS_PHYSICALLY_EQUAL_P(TYPE1, TYPE2) \ | |
899 | (TYPE_MAIN_VARIANT (TYPE1) == TYPE_MAIN_VARIANT (TYPE2) \ | |
900 | && TREE_CODE (TYPE1) == TREE_CODE (TYPE2)) | |
901 | ||
902 | /* Return the type variant that has no qualifiers (i.e., the main variant), | |
903 | except that the boundedness qualifier is preserved. */ | |
904 | #define TYPE_MAIN_PHYSICAL_VARIANT(TYPE) \ | |
905 | (BOUNDED_POINTER_TYPE_P (TYPE) \ | |
906 | ? build_qualified_type (TYPE, TYPE_QUAL_BOUNDED) \ | |
907 | : TYPE_MAIN_VARIANT (TYPE)) | |
908 | ||
8ff0c1af MM |
909 | /* For aggregate types, information about this type, as a base type |
910 | for itself. Used in a language-dependent way for types that are | |
911 | neither a RECORD_TYPE, QUAL_UNION_TYPE, nor a UNION_TYPE. */ | |
912 | #define TYPE_BINFO(NODE) (TYPE_CHECK (NODE)->type.binfo) | |
913 | ||
41472af8 MM |
914 | /* The (language-specific) typed-based alias set for this type. |
915 | Objects whose TYPE_ALIAS_SETs are different cannot alias each | |
916 | other. If the TYPE_ALIAS_SET is -1, no alias set has yet been | |
917 | assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this | |
918 | type can alias objects of any type. */ | |
919 | #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set) | |
920 | ||
921 | /* Nonzero iff the typed-based alias set for this type has been | |
922 | calculated. */ | |
923 | #define TYPE_ALIAS_SET_KNOWN_P(NODE) \ | |
924 | (TYPE_CHECK (NODE)->type.alias_set != -1) | |
925 | ||
bad1b4ba RK |
926 | /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply |
927 | to this type. */ | |
12b195d9 | 928 | #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes) |
bad1b4ba | 929 | |
869637e6 RS |
930 | /* The alignment necessary for objects of this type. |
931 | The value is an int, measured in bits. */ | |
12b195d9 | 932 | #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align) |
869637e6 | 933 | |
11cf4d18 JJ |
934 | /* 1 if the alignment for this type was requested by "aligned" attribute, |
935 | 0 if it is the default for this type. */ | |
936 | #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align) | |
937 | ||
834c6dff MM |
938 | /* The alignment for NODE, in bytes. */ |
939 | #define TYPE_ALIGN_UNIT(NODE) \ | |
940 | (TYPE_ALIGN (NODE) / BITS_PER_UNIT) | |
941 | ||
8da1b058 RS |
942 | #define TYPE_STUB_DECL(NODE) (TREE_CHAIN (NODE)) |
943 | ||
3635a54b RK |
944 | /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type |
945 | has BLKmode only because it lacks the alignment requirement for | |
946 | its size. */ | |
12b195d9 | 947 | #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag) |
8da1b058 | 948 | |
e36308b0 MM |
949 | /* In an INTEGER_TYPE, it means the type represents a size. We use |
950 | this both for validity checking and to permit optimizations that | |
951 | are unsafe for other types. Note that the C `size_t' type should | |
952 | *not* have this flag set. The `size_t' type is simply a typedef | |
953 | for an ordinary integer type that happens to be the type of an | |
954 | expression returned by `sizeof'; `size_t' has no special | |
955 | properties. Expressions whose type have TYPE_IS_SIZETYPE set are | |
956 | always actual sizes. */ | |
7393c642 RK |
957 | #define TYPE_IS_SIZETYPE(NODE) \ |
958 | (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag) | |
959 | ||
960 | /* In a FUNCTION_TYPE, indicates that the function returns with the stack | |
961 | pointer depressed. */ | |
962 | #define TYPE_RETURNS_STACK_DEPRESSED(NODE) \ | |
199acebb | 963 | (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag) |
fed3cef0 | 964 | |
8da1b058 RS |
965 | /* Nonzero in a type considered volatile as a whole. */ |
966 | #define TYPE_VOLATILE(NODE) ((NODE)->common.volatile_flag) | |
967 | ||
968 | /* Means this type is const-qualified. */ | |
969 | #define TYPE_READONLY(NODE) ((NODE)->common.readonly_flag) | |
970 | ||
3932261a MM |
971 | /* If nonzero, this type is `restrict'-qualified, in the C sense of |
972 | the term. */ | |
973 | #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag) | |
974 | ||
a6d7adfd GM |
975 | /* If nonzero, this type's size and layout, (or the size and layout of |
976 | its arguments and/or return value in the case of a FUNCTION_TYPE or | |
977 | METHOD_TYPE) was changed by the presence of pointer bounds. */ | |
978 | #define TYPE_BOUNDED(NODE) (TYPE_CHECK (NODE)->common.bounded_flag) | |
979 | ||
3932261a MM |
980 | /* There is a TYPE_QUAL value for each type qualifier. They can be |
981 | combined by bitwise-or to form the complete set of qualifiers for a | |
982 | type. */ | |
983 | ||
984 | #define TYPE_UNQUALIFIED 0x0 | |
985 | #define TYPE_QUAL_CONST 0x1 | |
986 | #define TYPE_QUAL_VOLATILE 0x2 | |
987 | #define TYPE_QUAL_RESTRICT 0x4 | |
a6d7adfd | 988 | #define TYPE_QUAL_BOUNDED 0x8 |
3932261a MM |
989 | |
990 | /* The set of type qualifiers for this type. */ | |
a6d7adfd GM |
991 | #define TYPE_QUALS(NODE) \ |
992 | ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \ | |
993 | | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \ | |
994 | | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT) \ | |
995 | | (BOUNDED_INDIRECT_TYPE_P (NODE) * TYPE_QUAL_BOUNDED)) | |
996 | ||
997 | /* The set of qualifiers pertinent to an expression node. */ | |
998 | #define TREE_EXPR_QUALS(NODE) \ | |
999 | ((TREE_READONLY (NODE) * TYPE_QUAL_CONST) \ | |
1000 | | (TREE_THIS_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \ | |
1001 | | (TREE_BOUNDED (NODE) * TYPE_QUAL_BOUNDED)) | |
1002 | ||
1003 | /* The set of qualifiers pertinent to a FUNCTION_DECL node. */ | |
1004 | #define TREE_FUNC_QUALS(NODE) \ | |
1005 | ((TREE_READONLY (NODE) * TYPE_QUAL_CONST) \ | |
1006 | | (TREE_THIS_VOLATILE (NODE) * TYPE_QUAL_VOLATILE)) | |
3932261a | 1007 | |
9f86614b | 1008 | /* These flags are available for each language front end to use internally. */ |
12b195d9 ML |
1009 | #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0) |
1010 | #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1) | |
1011 | #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2) | |
1012 | #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3) | |
1013 | #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4) | |
1014 | #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5) | |
1015 | #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6) | |
8da1b058 | 1016 | |
74a3fd26 PB |
1017 | /* If set in an ARRAY_TYPE, indicates a string type (for languages |
1018 | that distinguish string from array of char). | |
1019 | If set in a SET_TYPE, indicates a bitstring type. */ | |
12b195d9 | 1020 | #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag) |
74a3fd26 | 1021 | |
2fb2b21c PB |
1022 | /* If non-NULL, this is a upper bound of the size (in bytes) of an |
1023 | object of the given ARRAY_TYPE. This allows temporaries to be allocated. */ | |
1024 | #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) TYPE_MAX_VALUE (ARRAY_TYPE) | |
1025 | ||
0b4565c9 BS |
1026 | /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */ |
1027 | #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) (GET_MODE_NUNITS (TYPE_CHECK (VECTOR_TYPE)->type.mode)) | |
1028 | ||
1029 | /* Indicates that objects of this type must be initialized by calling a | |
4ac3d994 | 1030 | function when they are created. */ |
2bf105ab RK |
1031 | #define TYPE_NEEDS_CONSTRUCTING(NODE) \ |
1032 | (TYPE_CHECK (NODE)->type.needs_constructing_flag) | |
4ac3d994 | 1033 | |
adb23061 RK |
1034 | /* Indicates that objects of this type (a UNION_TYPE), should be passed |
1035 | the same way that the first union alternative would be passed. */ | |
2bf105ab RK |
1036 | #define TYPE_TRANSPARENT_UNION(NODE) \ |
1037 | (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag) | |
1038 | ||
1039 | /* For an ARRAY_TYPE, indicates that it is not permitted to | |
1040 | take the address of a component of the type. */ | |
1041 | #define TYPE_NONALIASED_COMPONENT(NODE) \ | |
1042 | (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag) | |
adb23061 | 1043 | |
956d6950 | 1044 | /* Indicated that objects of this type should be laid out in as |
9e357cd8 | 1045 | compact a way as possible. */ |
12b195d9 | 1046 | #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag) |
9e357cd8 | 1047 | |
a6d7adfd GM |
1048 | /* A bounded pointer or bounded reference type (collectively called |
1049 | indirect types) is represented as a RECORD_TYPE node containing | |
1050 | three pointer fields whose type is the corresponding unbounded | |
1051 | POINTER_TYPE or REFERENCE_TYPE. A RECORD_TYPE node that represents | |
1052 | a bounded indirect type differs from a normal RECORD_TYPE node in | |
1053 | that its TREE_TYPE is non-NULL and has the pointed-to type just as | |
1054 | a POINTER_TYPE or REFERENCE_TYPE node has. The bounded RECORD_TYPE | |
1055 | nodes are stored on the same type variant chain alongside the | |
1056 | variants of the underlaying indirect types nodes. The main variant | |
1057 | of such chains is always the unbounded type. */ | |
1058 | ||
1059 | /* Access the field decls of a bounded-pointer type. */ | |
1060 | #define TYPE_BOUNDED_VALUE(TYPE) TYPE_FIELDS (TYPE) | |
1061 | #define TYPE_BOUNDED_BASE(TYPE) TREE_CHAIN (TYPE_BOUNDED_VALUE (TYPE)) | |
1062 | #define TYPE_BOUNDED_EXTENT(TYPE) TREE_CHAIN (TYPE_BOUNDED_BASE (TYPE)) | |
1063 | ||
1064 | /* Access the simple-pointer subtype of a bounded-pointer type. */ | |
1065 | #define TYPE_BOUNDED_SUBTYPE(TYPE) TREE_TYPE (TYPE_BOUNDED_VALUE (TYPE)) | |
1066 | ||
1067 | /* Find the unbounded counterpart to a type, or return TYPE if it is | |
1068 | already unbounded. */ | |
1069 | #define TYPE_UNBOUNDED_VARIANT(TYPE) \ | |
1070 | (BOUNDED_POINTER_TYPE_P (TYPE) ? TYPE_BOUNDED_SUBTYPE (TYPE) : (TYPE)) | |
1071 | ||
1072 | /* This field comprises two bits, for values in the range 0..3: | |
1073 | ||
1074 | depth=0 means that type is a scalar, or an aggregate that contains | |
1075 | only depth=0 types, or a function that has only depth=0 types for | |
1076 | its return value and argument types. | |
1077 | ||
1078 | depth=1 means that type is a pointer to a depth=0 type, or an | |
1079 | aggregate that contains only depth=0 and depth=1 types, or a | |
1080 | function that has only depth=0 and depth=1 types for its return | |
1081 | value and argument types. | |
1082 | ||
1083 | The meanings of depth=2 and depth=3 are obvious by induction. | |
1084 | Varargs functions are depth=3. The type `va_list' is depth=3. | |
1085 | ||
1086 | The purpose of measuring pointer depth of a type is to determine | |
1087 | the eligibility of a function for an automatically-generated | |
1088 | bounded-pointer thunk. A depth=0 functions needs no thunk. A | |
1089 | depth=1 function is eligible for an automatic thunk. Functions | |
1090 | with depth 2 or more are too complex to get automatic thunks. | |
1091 | ||
1092 | Function decls also have a pointer_depth field, since we also | |
1093 | consider the actual argument types for functions. */ | |
1094 | ||
1095 | #define TYPE_POINTER_DEPTH(TYPE) (TYPE_CHECK (TYPE)->type.pointer_depth) | |
1096 | ||
1097 | /* In a FUNCTION_TYPE node, this bit stores the value of | |
1098 | default_pointer_boundedness at the time TYPE was created. It is | |
1099 | useful for choosing default boundedness of function arguments for | |
1100 | non-prototype function decls and for varargs/stdarg lists. */ | |
2bf105ab RK |
1101 | #define TYPE_AMBIENT_BOUNDEDNESS(TYPE) \ |
1102 | (FUNCTION_TYPE_CHECK (TYPE)->type.transparent_union_flag) | |
a6d7adfd GM |
1103 | |
1104 | #define MAX_POINTER_DEPTH 2 | |
1105 | #define VA_LIST_POINTER_DEPTH 3 | |
1106 | ||
8da1b058 RS |
1107 | struct tree_type |
1108 | { | |
2bf105ab | 1109 | struct tree_common common; |
8da1b058 RS |
1110 | union tree_node *values; |
1111 | union tree_node *size; | |
ead17059 | 1112 | union tree_node *size_unit; |
bad1b4ba | 1113 | union tree_node *attributes; |
b3ddc3ab | 1114 | unsigned int uid; |
8da1b058 | 1115 | |
b3ddc3ab | 1116 | unsigned int precision : 9; |
c149cc37 | 1117 | ENUM_BITFIELD(machine_mode) mode : 7; |
bad1b4ba | 1118 | |
74a3fd26 | 1119 | unsigned string_flag : 1; |
8da1b058 | 1120 | unsigned no_force_blk_flag : 1; |
4ac3d994 | 1121 | unsigned needs_constructing_flag : 1; |
adb23061 | 1122 | unsigned transparent_union_flag : 1; |
9e357cd8 | 1123 | unsigned packed_flag : 1; |
3932261a | 1124 | unsigned restrict_flag : 1; |
a6d7adfd | 1125 | unsigned pointer_depth : 2; |
3932261a | 1126 | |
8da1b058 RS |
1127 | unsigned lang_flag_0 : 1; |
1128 | unsigned lang_flag_1 : 1; | |
1129 | unsigned lang_flag_2 : 1; | |
1130 | unsigned lang_flag_3 : 1; | |
1131 | unsigned lang_flag_4 : 1; | |
1132 | unsigned lang_flag_5 : 1; | |
1133 | unsigned lang_flag_6 : 1; | |
11cf4d18 | 1134 | unsigned user_align : 1; |
8da1b058 | 1135 | |
69b78d8d | 1136 | unsigned int align; |
8da1b058 RS |
1137 | union tree_node *pointer_to; |
1138 | union tree_node *reference_to; | |
a0665b77 | 1139 | union {int address; char *pointer; } symtab; |
8da1b058 RS |
1140 | union tree_node *name; |
1141 | union tree_node *minval; | |
1142 | union tree_node *maxval; | |
1143 | union tree_node *next_variant; | |
1144 | union tree_node *main_variant; | |
1145 | union tree_node *binfo; | |
1146 | union tree_node *noncopied_parts; | |
1147 | union tree_node *context; | |
3bdf5ad1 | 1148 | HOST_WIDE_INT alias_set; |
8da1b058 RS |
1149 | /* Points to a structure whose details depend on the language in use. */ |
1150 | struct lang_type *lang_specific; | |
1151 | }; | |
1152 | \f | |
1153 | /* Define accessor macros for information about type inheritance | |
1154 | and basetypes. | |
1155 | ||
1156 | A "basetype" means a particular usage of a data type for inheritance | |
1157 | in another type. Each such basetype usage has its own "binfo" | |
1158 | object to describe it. The binfo object is a TREE_VEC node. | |
1159 | ||
1160 | Inheritance is represented by the binfo nodes allocated for a | |
1161 | given type. For example, given types C and D, such that D is | |
1162 | inherited by C, 3 binfo nodes will be allocated: one for describing | |
1163 | the binfo properties of C, similarly one for D, and one for | |
1164 | describing the binfo properties of D as a base type for C. | |
1165 | Thus, given a pointer to class C, one can get a pointer to the binfo | |
1166 | of D acting as a basetype for C by looking at C's binfo's basetypes. */ | |
1167 | ||
1168 | /* The actual data type node being inherited in this basetype. */ | |
1169 | #define BINFO_TYPE(NODE) TREE_TYPE (NODE) | |
1170 | ||
1171 | /* The offset where this basetype appears in its containing type. | |
1172 | BINFO_OFFSET slot holds the offset (in bytes) | |
1173 | from the base of the complete object to the base of the part of the | |
1174 | object that is allocated on behalf of this `type'. | |
1175 | This is always 0 except when there is multiple inheritance. */ | |
1176 | ||
1177 | #define BINFO_OFFSET(NODE) TREE_VEC_ELT ((NODE), 1) | |
1178 | #define TYPE_BINFO_OFFSET(NODE) BINFO_OFFSET (TYPE_BINFO (NODE)) | |
7d02bbef | 1179 | #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE))) |
8da1b058 RS |
1180 | |
1181 | /* The virtual function table belonging to this basetype. Virtual | |
1182 | function tables provide a mechanism for run-time method dispatching. | |
1183 | The entries of a virtual function table are language-dependent. */ | |
1184 | ||
1185 | #define BINFO_VTABLE(NODE) TREE_VEC_ELT ((NODE), 2) | |
1186 | #define TYPE_BINFO_VTABLE(NODE) BINFO_VTABLE (TYPE_BINFO (NODE)) | |
1187 | ||
1188 | /* The virtual functions in the virtual function table. This is | |
1189 | a TREE_LIST that is used as an initial approximation for building | |
1190 | a virtual function table for this basetype. */ | |
1191 | #define BINFO_VIRTUALS(NODE) TREE_VEC_ELT ((NODE), 3) | |
1192 | #define TYPE_BINFO_VIRTUALS(NODE) BINFO_VIRTUALS (TYPE_BINFO (NODE)) | |
1193 | ||
0430641b MM |
1194 | /* A vector of binfos for the direct basetypes inherited by this |
1195 | basetype. | |
8da1b058 | 1196 | |
0430641b MM |
1197 | If this basetype describes type D as inherited in C, and if the |
1198 | basetypes of D are E and F, then this vector contains binfos for | |
1199 | inheritance of E and F by C. | |
8da1b058 RS |
1200 | |
1201 | ??? This could probably be done by just allocating the | |
1202 | base types at the end of this TREE_VEC (instead of using | |
1203 | another TREE_VEC). This would simplify the calculation | |
1204 | of how many basetypes a given type had. */ | |
1205 | #define BINFO_BASETYPES(NODE) TREE_VEC_ELT ((NODE), 4) | |
1206 | #define TYPE_BINFO_BASETYPES(NODE) TREE_VEC_ELT (TYPE_BINFO (NODE), 4) | |
1207 | ||
5e1677bc MM |
1208 | /* The number of basetypes for NODE. */ |
1209 | #define BINFO_N_BASETYPES(NODE) \ | |
1210 | (BINFO_BASETYPES (NODE) ? TREE_VEC_LENGTH (BINFO_BASETYPES (NODE)) : 0) | |
1211 | ||
7d02bbef JM |
1212 | /* Accessor macro to get to the Nth basetype of this basetype. */ |
1213 | #define BINFO_BASETYPE(NODE,N) TREE_VEC_ELT (BINFO_BASETYPES (NODE), (N)) | |
1214 | #define TYPE_BINFO_BASETYPE(NODE,N) BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (NODE)), (N))) | |
1215 | ||
39ac3e4f MM |
1216 | /* For a BINFO record describing a virtual base class, i.e., one where |
1217 | TREE_VIA_VIRTUAL is set, this field assists in locating the virtual | |
1218 | base. The actual contents are language-dependent. Under the old | |
1219 | ABI, the C++ front-end uses a FIELD_DECL whose contents are a | |
1220 | pointer to the virtual base; under the new ABI this field is | |
1221 | instead a INTEGER_CST giving an offset into the vtable where the | |
1222 | offset to the virtual base can be found. */ | |
2cc3ac7a MS |
1223 | #define BINFO_VPTR_FIELD(NODE) TREE_VEC_ELT ((NODE), 5) |
1224 | ||
bbc0e641 | 1225 | /* The size of a base class subobject of this type. Not all frontends |
06ceef4e | 1226 | currently allocate the space for these fields. */ |
7d02bbef | 1227 | #define BINFO_SIZE(NODE) TREE_VEC_ELT ((NODE), 6) |
06ceef4e | 1228 | #define BINFO_SIZE_UNIT(NODE) TREE_VEC_ELT ((NODE), 7) |
7d02bbef | 1229 | #define TYPE_BINFO_SIZE(NODE) BINFO_SIZE (TYPE_BINFO (NODE)) |
06ceef4e | 1230 | #define TYPE_BINFO_SIZE_UNIT(NODE) BINFO_SIZE_UNIT (TYPE_BINFO (NODE)) |
8da1b058 RS |
1231 | |
1232 | /* Slot used to build a chain that represents a use of inheritance. | |
1233 | For example, if X is derived from Y, and Y is derived from Z, | |
1234 | then this field can be used to link the binfo node for X to | |
1235 | the binfo node for X's Y to represent the use of inheritance | |
1236 | from X to Y. Similarly, this slot of the binfo node for X's Y | |
1237 | can point to the Z from which Y is inherited (in X's inheritance | |
1238 | hierarchy). In this fashion, one can represent and traverse specific | |
1239 | uses of inheritance using the binfo nodes themselves (instead of | |
1240 | consing new space pointing to binfo nodes). | |
1241 | It is up to the language-dependent front-ends to maintain | |
1242 | this information as necessary. */ | |
1243 | #define BINFO_INHERITANCE_CHAIN(NODE) TREE_VEC_ELT ((NODE), 0) | |
1244 | \f | |
1245 | /* Define fields and accessors for nodes representing declared names. */ | |
1246 | ||
7766fe8e JM |
1247 | /* Nonzero if DECL represents a decl. */ |
1248 | #define DECL_P(DECL) (TREE_CODE_CLASS (TREE_CODE (DECL)) == 'd') | |
8da1b058 RS |
1249 | /* This is the name of the object as written by the user. |
1250 | It is an IDENTIFIER_NODE. */ | |
12b195d9 | 1251 | #define DECL_NAME(NODE) (DECL_CHECK (NODE)->decl.name) |
8da1b058 RS |
1252 | /* This is the name of the object as the assembler will see it |
1253 | (but before any translations made by ASM_OUTPUT_LABELREF). | |
1254 | Often this is the same as DECL_NAME. | |
1255 | It is an IDENTIFIER_NODE. */ | |
12b195d9 | 1256 | #define DECL_ASSEMBLER_NAME(NODE) (DECL_CHECK (NODE)->decl.assembler_name) |
868e8789 DE |
1257 | /* Records the section name in a section attribute. Used to pass |
1258 | the name from decl_attributes to make_function_rtl and make_decl_rtl. */ | |
12b195d9 | 1259 | #define DECL_SECTION_NAME(NODE) (DECL_CHECK (NODE)->decl.section_name) |
9b800101 | 1260 | /* For FIELD_DECLs, this is the |
3635a54b RK |
1261 | RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE node that the field is |
1262 | a member of. For VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL, | |
a082c85a JM |
1263 | and CONST_DECL nodes, this points to either the FUNCTION_DECL for the |
1264 | containing function, the RECORD_TYPE or UNION_TYPE for the containing | |
1265 | type, or NULL_TREE if the given decl has "file scope". */ | |
12b195d9 | 1266 | #define DECL_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context) |
770ae6cc | 1267 | #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.context) |
77cf75a8 RK |
1268 | /* In a DECL this is the field where configuration dependent machine |
1269 | attributes are store */ | |
12b195d9 | 1270 | #define DECL_MACHINE_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.machine_attributes) |
770ae6cc RK |
1271 | /* In a FIELD_DECL, this is the field position, counting in bytes, of the |
1272 | byte containing the bit closest to the beginning of the structure. */ | |
1273 | #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.arguments) | |
1274 | /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the | |
1275 | field from DECL_FIELD_OFFSET. */ | |
1276 | #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.u2.t) | |
8da1b058 | 1277 | /* In a FIELD_DECL, this indicates whether the field was a bit-field and |
8e148bef RS |
1278 | if so, the type that was originally specified for it. |
1279 | TREE_TYPE may have been modified (in finish_struct). */ | |
770ae6cc | 1280 | #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->decl.result) |
8da1b058 RS |
1281 | /* In FUNCTION_DECL, a chain of ..._DECL nodes. */ |
1282 | /* VAR_DECL and PARM_DECL reserve the arguments slot | |
1283 | for language-specific uses. */ | |
12b195d9 | 1284 | #define DECL_ARGUMENTS(NODE) (DECL_CHECK (NODE)->decl.arguments) |
17aec3eb RK |
1285 | /* This field is used to reference anything in decl.result and is meant only |
1286 | for use by the garbage collector. */ | |
1287 | #define DECL_RESULT_FLD(NODE) (DECL_CHECK (NODE)->decl.result) | |
8da1b058 | 1288 | /* In FUNCTION_DECL, holds the decl for the return value. */ |
770ae6cc | 1289 | #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.result) |
9506a28d | 1290 | /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */ |
770ae6cc | 1291 | #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl.result) |
8da1b058 | 1292 | /* In PARM_DECL, holds the type as written (perhaps a function or array). */ |
770ae6cc | 1293 | #define DECL_ARG_TYPE_AS_WRITTEN(NODE) (PARM_DECL_CHECK (NODE)->decl.result) |
8da1b058 RS |
1294 | /* For a FUNCTION_DECL, holds the tree of BINDINGs. |
1295 | For a VAR_DECL, holds the initial value. | |
1296 | For a PARM_DECL, not used--default | |
1297 | values for parameters are encoded in the type of the function, | |
1298 | not in the PARM_DECL slot. */ | |
12b195d9 | 1299 | #define DECL_INITIAL(NODE) (DECL_CHECK (NODE)->decl.initial) |
8da1b058 RS |
1300 | /* For a PARM_DECL, records the data type used to pass the argument, |
1301 | which may be different from the type seen in the program. */ | |
770ae6cc | 1302 | #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl.initial) |
3635a54b RK |
1303 | /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which |
1304 | if nonzero, indicates that the field occupies the type. */ | |
770ae6cc | 1305 | #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->decl.initial) |
8da1b058 | 1306 | /* These two fields describe where in the source code the declaration was. */ |
12b195d9 ML |
1307 | #define DECL_SOURCE_FILE(NODE) (DECL_CHECK (NODE)->decl.filename) |
1308 | #define DECL_SOURCE_LINE(NODE) (DECL_CHECK (NODE)->decl.linenum) | |
06ceef4e | 1309 | /* Holds the size of the datum, in bits, as a tree expression. |
8da1b058 | 1310 | Need not be constant. */ |
12b195d9 | 1311 | #define DECL_SIZE(NODE) (DECL_CHECK (NODE)->decl.size) |
06ceef4e RK |
1312 | /* Likewise for the size in bytes. */ |
1313 | #define DECL_SIZE_UNIT(NODE) (DECL_CHECK (NODE)->decl.size_unit) | |
971774bb | 1314 | /* Holds the alignment required for the datum, in bits. */ |
770ae6cc | 1315 | #define DECL_ALIGN(NODE) (DECL_CHECK (NODE)->decl.u1.a.align) |
971774bb MM |
1316 | /* The alignment of NODE, in bytes. */ |
1317 | #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT) | |
2f5c7f45 GK |
1318 | /* For FIELD_DECLs, off_align holds the number of low-order bits of |
1319 | DECL_FIELD_OFFSET which are known to be always zero. | |
1320 | DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET | |
1321 | has. */ | |
1322 | #define DECL_OFFSET_ALIGN(NODE) \ | |
1323 | (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align) | |
1324 | /* Specify that DECL_ALIGN(NODE) is a multiple of X. */ | |
1325 | #define SET_DECL_OFFSET_ALIGN(NODE, X) \ | |
1326 | (FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align = exact_log2 ((X) & -(X))) | |
11cf4d18 JJ |
1327 | /* 1 if the alignment for this type was requested by "aligned" attribute, |
1328 | 0 if it is the default for this type. */ | |
1329 | #define DECL_USER_ALIGN(NODE) (DECL_CHECK (NODE)->decl.user_align) | |
17c73321 RK |
1330 | /* Holds the machine mode corresponding to the declaration of a variable or |
1331 | field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a | |
1332 | FIELD_DECL. */ | |
12b195d9 | 1333 | #define DECL_MODE(NODE) (DECL_CHECK (NODE)->decl.mode) |
17c73321 RK |
1334 | /* Holds the RTL expression for the value of a variable or function. If |
1335 | PROMOTED_MODE is defined, the mode of this expression may not be same | |
1336 | as DECL_MODE. In that case, DECL_MODE contains the mode corresponding | |
1337 | to the variable's data type, while the mode | |
1338 | of DECL_RTL is the mode actually used to contain the data. */ | |
12b195d9 | 1339 | #define DECL_RTL(NODE) (DECL_CHECK (NODE)->decl.rtl) |
0dfa1860 MM |
1340 | /* Holds an INSN_LIST of all of the live ranges in which the variable |
1341 | has been moved to a possibly different register. */ | |
12b195d9 | 1342 | #define DECL_LIVE_RANGE_RTL(NODE) (DECL_CHECK (NODE)->decl.live_range_rtl) |
8da1b058 RS |
1343 | /* For PARM_DECL, holds an RTL for the stack slot or register |
1344 | where the data was actually passed. */ | |
770ae6cc | 1345 | #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->decl.u2.r) |
8da1b058 | 1346 | /* For FUNCTION_DECL, if it is inline, holds the saved insn chain. */ |
770ae6cc | 1347 | #define DECL_SAVED_INSNS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u2.f) |
66321686 RS |
1348 | /* For FUNCTION_DECL, if it is inline, |
1349 | holds the size of the stack frame, as an integer. */ | |
770ae6cc | 1350 | #define DECL_FRAME_SIZE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u1.i) |
66321686 RS |
1351 | /* For FUNCTION_DECL, if it is built-in, |
1352 | this identifies which built-in operation it is. */ | |
770ae6cc | 1353 | #define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u1.f) |
8da1b058 RS |
1354 | |
1355 | /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways. | |
1356 | Before the struct containing the FUNCTION_DECL is laid out, | |
1357 | DECL_VINDEX may point to a FUNCTION_DECL in a base class which | |
1358 | is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual | |
1359 | function. When the class is laid out, this pointer is changed | |
1360 | to an INTEGER_CST node which is suitable for use as an index | |
1361 | into the virtual function table. */ | |
12b195d9 | 1362 | #define DECL_VINDEX(NODE) (DECL_CHECK (NODE)->decl.vindex) |
8da1b058 RS |
1363 | /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in |
1364 | which this FIELD_DECL is defined. This information is needed when | |
1365 | writing debugging information about vfield and vbase decls for C++. */ | |
770ae6cc | 1366 | #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.vindex) |
8da1b058 | 1367 | |
0e77444b | 1368 | /* Every ..._DECL node gets a unique number. */ |
12b195d9 | 1369 | #define DECL_UID(NODE) (DECL_CHECK (NODE)->decl.uid) |
0e77444b | 1370 | |
c5caa350 CH |
1371 | /* For any sort of a ..._DECL node, this points to the original (abstract) |
1372 | decl node which this decl is an instance of, or else it is NULL indicating | |
4a7d05dc DE |
1373 | that this decl is not an instance of some other decl. For example, |
1374 | in a nested declaration of an inline function, this points back to the | |
1375 | definition. */ | |
12b195d9 | 1376 | #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_CHECK (NODE)->decl.abstract_origin) |
c5caa350 | 1377 | |
02e24c7a MM |
1378 | /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract |
1379 | origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */ | |
1380 | #define DECL_ORIGIN(NODE) \ | |
1381 | (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : NODE) | |
1382 | ||
f93dacbd RK |
1383 | /* Nonzero for any sort of ..._DECL node means this decl node represents an |
1384 | inline instance of some original (abstract) decl from an inline function; | |
1385 | suppress any warnings about shadowing some other variable. FUNCTION_DECL | |
1386 | nodes can also have their abstract origin set to themselves. */ | |
3d62d651 ZW |
1387 | #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != (tree) 0 \ |
1388 | && DECL_ABSTRACT_ORIGIN (NODE) != (NODE)) | |
8da1b058 RS |
1389 | |
1390 | /* Nonzero if a _DECL means that the name of this decl should be ignored | |
1391 | for symbolic debug purposes. */ | |
12b195d9 | 1392 | #define DECL_IGNORED_P(NODE) (DECL_CHECK (NODE)->decl.ignored_flag) |
8da1b058 | 1393 | |
c5caa350 CH |
1394 | /* Nonzero for a given ..._DECL node means that this node represents an |
1395 | "abstract instance" of the given declaration (e.g. in the original | |
1396 | declaration of an inline function). When generating symbolic debugging | |
9faa82d8 | 1397 | information, we mustn't try to generate any address information for nodes |
c5caa350 CH |
1398 | marked as "abstract instances" because we don't actually generate |
1399 | any code or allocate any data space for such instances. */ | |
12b195d9 | 1400 | #define DECL_ABSTRACT(NODE) (DECL_CHECK (NODE)->decl.abstract_flag) |
c5caa350 | 1401 | |
3110a56e RS |
1402 | /* Nonzero if a _DECL means that no warnings should be generated just |
1403 | because this decl is unused. */ | |
12b195d9 | 1404 | #define DECL_IN_SYSTEM_HEADER(NODE) (DECL_CHECK (NODE)->decl.in_system_header_flag) |
3110a56e | 1405 | |
2c0d84d6 MS |
1406 | /* Nonzero for a given ..._DECL node means that this node should be |
1407 | put in .common, if possible. If a DECL_INITIAL is given, and it | |
1408 | is not error_mark_node, then the decl cannot be put in .common. */ | |
12b195d9 | 1409 | #define DECL_COMMON(NODE) (DECL_CHECK (NODE)->decl.common_flag) |
2c0d84d6 | 1410 | |
3110a56e | 1411 | /* Language-specific decl information. */ |
12b195d9 | 1412 | #define DECL_LANG_SPECIFIC(NODE) (DECL_CHECK (NODE)->decl.lang_specific) |
8da1b058 RS |
1413 | |
1414 | /* In a VAR_DECL or FUNCTION_DECL, | |
1415 | nonzero means external reference: | |
1416 | do not allocate storage, and refer to a definition elsewhere. */ | |
12b195d9 | 1417 | #define DECL_EXTERNAL(NODE) (DECL_CHECK (NODE)->decl.external_flag) |
8da1b058 | 1418 | |
2ce3c6c6 JM |
1419 | /* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority |
1420 | initializatons. */ | |
1421 | #define DEFAULT_INIT_PRIORITY 65535 | |
1422 | #define MAX_INIT_PRIORITY 65535 | |
9a6e70c9 | 1423 | #define MAX_RESERVED_INIT_PRIORITY 100 |
2ce3c6c6 | 1424 | |
60e9e4b7 DE |
1425 | /* In a TYPE_DECL |
1426 | nonzero means the detail info about this type is not dumped into stabs. | |
5a783256 | 1427 | Instead it will generate cross reference ('x') of names. |
60e9e4b7 | 1428 | This uses the same flag as DECL_EXTERNAL. */ |
770ae6cc RK |
1429 | #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \ |
1430 | (TYPE_DECL_CHECK (NODE)->decl.external_flag) | |
60e9e4b7 | 1431 | |
a5f99f01 | 1432 | /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */ |
12b195d9 | 1433 | #define DECL_REGISTER(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag) |
a5f99f01 RK |
1434 | /* In LABEL_DECL nodes, nonzero means that an error message about |
1435 | jumping into such a binding contour has been printed for this label. */ | |
770ae6cc | 1436 | #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl.regdecl_flag) |
5a1c7968 | 1437 | /* In a FIELD_DECL, indicates this field should be bit-packed. */ |
770ae6cc | 1438 | #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl.regdecl_flag) |
a5f99f01 RK |
1439 | /* In a FUNCTION_DECL with a non-zero DECL_CONTEXT, indicates that a |
1440 | static chain is not needed. */ | |
770ae6cc RK |
1441 | #define DECL_NO_STATIC_CHAIN(NODE) \ |
1442 | (FUNCTION_DECL_CHECK (NODE)->decl.regdecl_flag) | |
8da1b058 RS |
1443 | |
1444 | /* Nonzero in a ..._DECL means this variable is ref'd from a nested function. | |
1445 | For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes. | |
1446 | ||
1447 | For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted. | |
1448 | ||
1449 | Also set in some languages for variables, etc., outside the normal | |
1450 | lexical scope, such as class instance variables. */ | |
12b195d9 | 1451 | #define DECL_NONLOCAL(NODE) (DECL_CHECK (NODE)->decl.nonlocal_flag) |
8da1b058 RS |
1452 | |
1453 | /* Nonzero in a FUNCTION_DECL means this function can be substituted | |
1454 | where it is called. */ | |
770ae6cc | 1455 | #define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inline_flag) |
8da1b058 RS |
1456 | |
1457 | /* Nonzero in a FUNCTION_DECL means this is a built-in function | |
1458 | that is not specified by ansi C and that users are supposed to be allowed | |
1459 | to redefine for any purpose whatever. */ | |
770ae6cc RK |
1460 | #define DECL_BUILT_IN_NONANSI(NODE) \ |
1461 | (FUNCTION_DECL_CHECK (NODE)->common.unsigned_flag) | |
8da1b058 | 1462 | |
140592a0 AG |
1463 | /* Nonzero in a FUNCTION_DECL means this function should be treated |
1464 | as if it were a malloc, meaning it returns a pointer that is | |
1465 | not an alias. */ | |
770ae6cc | 1466 | #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.malloc_flag) |
140592a0 | 1467 | |
2a8f6b90 JH |
1468 | /* Nonzero in a FUNCTION_DECL means this function should be treated |
1469 | as "pure" function (like const function, but may read global memory). */ | |
1470 | #define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.pure_flag) | |
1471 | ||
8da1b058 RS |
1472 | /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed |
1473 | specially. */ | |
770ae6cc | 1474 | #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl.bit_field_flag) |
8da1b058 RS |
1475 | /* In a LABEL_DECL, nonzero means label was defined inside a binding |
1476 | contour that restored a stack level and which is now exited. */ | |
770ae6cc | 1477 | #define DECL_TOO_LATE(NODE) (LABEL_DECL_CHECK (NODE)->decl.bit_field_flag) |
26db82d8 | 1478 | |
12a22e76 | 1479 | /* Unused in FUNCTION_DECL. */ |
26db82d8 | 1480 | |
b8af45d0 RS |
1481 | /* In a VAR_DECL that's static, |
1482 | nonzero if the space is in the text section. */ | |
770ae6cc | 1483 | #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl.bit_field_flag) |
8da1b058 | 1484 | |
12a22e76 JM |
1485 | /* In a FUNCTION_DECL, nonzero means a built in function. */ |
1486 | #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN) | |
1487 | /* For a builtin function, identify which part of the compiler defined it. */ | |
770ae6cc RK |
1488 | #define DECL_BUILT_IN_CLASS(NODE) \ |
1489 | (FUNCTION_DECL_CHECK (NODE)->decl.built_in_class) | |
12a22e76 | 1490 | |
5a1c7968 | 1491 | /* Used in VAR_DECLs to indicate that the variable is a vtable. |
2458b9c0 JM |
1492 | Used in FIELD_DECLs for vtable pointers. |
1493 | Used in FUNCTION_DECLs to indicate that the function is virtual. */ | |
12b195d9 | 1494 | #define DECL_VIRTUAL_P(NODE) (DECL_CHECK (NODE)->decl.virtual_flag) |
8da1b058 | 1495 | |
30801830 JM |
1496 | /* Used to indicate that the linkage status of this DECL is not yet known, |
1497 | so it should not be output now. */ | |
12b195d9 | 1498 | #define DECL_DEFER_OUTPUT(NODE) (DECL_CHECK (NODE)->decl.defer_output) |
30801830 | 1499 | |
adb23061 RK |
1500 | /* Used in PARM_DECLs whose type are unions to indicate that the |
1501 | argument should be passed in the same way that the first union | |
1502 | alternative would be passed. */ | |
770ae6cc RK |
1503 | #define DECL_TRANSPARENT_UNION(NODE) \ |
1504 | (PARM_DECL_CHECK (NODE)->decl.transparent_union) | |
adb23061 | 1505 | |
2c5f4139 JM |
1506 | /* Used in FUNCTION_DECLs to indicate that they should be run automatically |
1507 | at the beginning or end of execution. */ | |
770ae6cc RK |
1508 | #define DECL_STATIC_CONSTRUCTOR(NODE) \ |
1509 | (FUNCTION_DECL_CHECK (NODE)->decl.static_ctor_flag) | |
1510 | ||
1511 | #define DECL_STATIC_DESTRUCTOR(NODE) \ | |
1512 | (FUNCTION_DECL_CHECK (NODE)->decl.static_dtor_flag) | |
2c5f4139 | 1513 | |
3edbc4b9 | 1514 | /* Used to indicate that this DECL represents a compiler-generated entity. */ |
12b195d9 | 1515 | #define DECL_ARTIFICIAL(NODE) (DECL_CHECK (NODE)->decl.artificial_flag) |
3edbc4b9 | 1516 | |
daefd78b | 1517 | /* Used to indicate that this DECL has weak linkage. */ |
12b195d9 | 1518 | #define DECL_WEAK(NODE) (DECL_CHECK (NODE)->decl.weak_flag) |
daefd78b | 1519 | |
c5bd82cb JM |
1520 | /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in |
1521 | multiple translation units should be merged. */ | |
12b195d9 | 1522 | #define DECL_ONE_ONLY(NODE) (DECL_CHECK (NODE)->decl.transparent_union) |
c5bd82cb | 1523 | |
59182242 MM |
1524 | /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need |
1525 | not be put out unless it is needed in this translation unit. | |
1526 | Entities like this are shared across translation units (like weak | |
1527 | entities), but are guaranteed to be generated by any translation | |
1528 | unit that needs them, and therefore need not be put out anywhere | |
1529 | where they are not needed. DECL_COMDAT is just a hint to the | |
1530 | back-end; it is up to front-ends which set this flag to ensure | |
1531 | that there will never be any harm, other than bloat, in putting out | |
1532 | something which is DECL_COMDAT. */ | |
1533 | #define DECL_COMDAT(NODE) (DECL_CHECK (NODE)->decl.comdat_flag) | |
1534 | ||
07417085 KR |
1535 | /* Used in FUNCTION_DECLs to indicate that function entry and exit should |
1536 | be instrumented with calls to support routines. */ | |
770ae6cc RK |
1537 | #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \ |
1538 | (FUNCTION_DECL_CHECK (NODE)->decl.no_instrument_function_entry_exit) | |
07417085 | 1539 | |
c5c76735 JL |
1540 | /* Used in FUNCTION_DECLs to indicate that check-memory-usage should be |
1541 | disabled in this function. */ | |
770ae6cc RK |
1542 | #define DECL_NO_CHECK_MEMORY_USAGE(NODE) \ |
1543 | (FUNCTION_DECL_CHECK (NODE)->decl.no_check_memory_usage) | |
7d384cc0 | 1544 | |
a157febd GK |
1545 | /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be |
1546 | disabled in this function. */ | |
770ae6cc RK |
1547 | #define DECL_NO_LIMIT_STACK(NODE) \ |
1548 | (FUNCTION_DECL_CHECK (NODE)->decl.no_limit_stack) | |
a157febd | 1549 | |
8da1b058 | 1550 | /* Additional flags for language-specific uses. */ |
12b195d9 ML |
1551 | #define DECL_LANG_FLAG_0(NODE) (DECL_CHECK (NODE)->decl.lang_flag_0) |
1552 | #define DECL_LANG_FLAG_1(NODE) (DECL_CHECK (NODE)->decl.lang_flag_1) | |
1553 | #define DECL_LANG_FLAG_2(NODE) (DECL_CHECK (NODE)->decl.lang_flag_2) | |
1554 | #define DECL_LANG_FLAG_3(NODE) (DECL_CHECK (NODE)->decl.lang_flag_3) | |
1555 | #define DECL_LANG_FLAG_4(NODE) (DECL_CHECK (NODE)->decl.lang_flag_4) | |
1556 | #define DECL_LANG_FLAG_5(NODE) (DECL_CHECK (NODE)->decl.lang_flag_5) | |
1557 | #define DECL_LANG_FLAG_6(NODE) (DECL_CHECK (NODE)->decl.lang_flag_6) | |
1558 | #define DECL_LANG_FLAG_7(NODE) (DECL_CHECK (NODE)->decl.lang_flag_7) | |
8da1b058 | 1559 | |
27da1b4d MK |
1560 | /* Used to indicate that the pointer to this DECL cannot be treated as |
1561 | an address constant. */ | |
1562 | #define DECL_NON_ADDR_CONST_P(NODE) (DECL_CHECK (NODE)->decl.non_addr_const_p) | |
1563 | ||
2bf105ab RK |
1564 | /* Used in a FIELD_DECL to indicate that we cannot form the address of |
1565 | this component. */ | |
1566 | #define DECL_NONADDRESSABLE_P(NODE) \ | |
1567 | (FIELD_DECL_CHECK (NODE)->decl.non_addressable) | |
1568 | ||
3932261a MM |
1569 | /* Used to indicate an alias set for the memory pointed to by this |
1570 | particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have | |
1571 | pointer (or reference) type. */ | |
1572 | #define DECL_POINTER_ALIAS_SET(NODE) \ | |
1573 | (DECL_CHECK (NODE)->decl.pointer_alias_set) | |
1574 | ||
1575 | /* Nonzero if an alias set has been assigned to this declaration. */ | |
1576 | #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \ | |
1577 | (DECL_POINTER_ALIAS_SET (NODE) != - 1) | |
1578 | ||
a6d7adfd GM |
1579 | /* The pointer_depth field comprises two bits for values in the range |
1580 | 0..3. The value is normally equal to TYPE_POINTER_DEPTH of decl's | |
1581 | type node, but for functions it migth be greater. For example, | |
1582 | this can happen when the function is declared to accept a parameter | |
1583 | of type void* (depth=1), but is actually called with an argument of | |
1584 | type foo** (depth=2). The function type will get the formal | |
1585 | parameter's depth, but the function decl will get the actual | |
1586 | argument's depth. */ | |
1587 | #define DECL_POINTER_DEPTH(DECL) (DECL_CHECK (DECL)->decl.pointer_depth) | |
1588 | ||
8da1b058 RS |
1589 | struct tree_decl |
1590 | { | |
2bf105ab | 1591 | struct tree_common common; |
3b304f5b | 1592 | const char *filename; |
8da1b058 | 1593 | int linenum; |
0e77444b | 1594 | unsigned int uid; |
09f532c9 | 1595 | union tree_node *size; |
e60a8c26 | 1596 | ENUM_BITFIELD(machine_mode) mode : 8; |
8da1b058 RS |
1597 | |
1598 | unsigned external_flag : 1; | |
1599 | unsigned nonlocal_flag : 1; | |
1600 | unsigned regdecl_flag : 1; | |
1601 | unsigned inline_flag : 1; | |
1602 | unsigned bit_field_flag : 1; | |
1603 | unsigned virtual_flag : 1; | |
8da1b058 | 1604 | unsigned ignored_flag : 1; |
c5caa350 | 1605 | unsigned abstract_flag : 1; |
8da1b058 | 1606 | |
3110a56e | 1607 | unsigned in_system_header_flag : 1; |
2c0d84d6 | 1608 | unsigned common_flag : 1; |
30801830 | 1609 | unsigned defer_output : 1; |
adb23061 | 1610 | unsigned transparent_union : 1; |
2c5f4139 JM |
1611 | unsigned static_ctor_flag : 1; |
1612 | unsigned static_dtor_flag : 1; | |
3edbc4b9 | 1613 | unsigned artificial_flag : 1; |
daefd78b | 1614 | unsigned weak_flag : 1; |
3110a56e | 1615 | |
9df2c88c RK |
1616 | unsigned non_addr_const_p : 1; |
1617 | unsigned no_instrument_function_entry_exit : 1; | |
1618 | unsigned no_check_memory_usage : 1; | |
1619 | unsigned comdat_flag : 1; | |
1620 | unsigned malloc_flag : 1; | |
1621 | unsigned no_limit_stack : 1; | |
c149cc37 | 1622 | ENUM_BITFIELD(built_in_class) built_in_class : 2; |
2bf105ab RK |
1623 | |
1624 | unsigned pure_flag : 1; | |
a6d7adfd | 1625 | unsigned pointer_depth : 2; |
2bf105ab | 1626 | unsigned non_addressable : 1; |
11cf4d18 JJ |
1627 | unsigned user_align : 1; |
1628 | /* Three unused bits. */ | |
9df2c88c | 1629 | |
8da1b058 RS |
1630 | unsigned lang_flag_0 : 1; |
1631 | unsigned lang_flag_1 : 1; | |
1632 | unsigned lang_flag_2 : 1; | |
1633 | unsigned lang_flag_3 : 1; | |
1634 | unsigned lang_flag_4 : 1; | |
1635 | unsigned lang_flag_5 : 1; | |
1636 | unsigned lang_flag_6 : 1; | |
1637 | unsigned lang_flag_7 : 1; | |
1638 | ||
09f532c9 RK |
1639 | /* For a FUNCTION_DECL, if inline, this is the size of frame needed. |
1640 | If built-in, this is the code for which built-in function. | |
770ae6cc | 1641 | For other kinds of decls, this is DECL_ALIGN and DECL_OFFSET_ALIGN. */ |
09f532c9 | 1642 | union { |
9df2c88c | 1643 | HOST_WIDE_INT i; |
9df2c88c | 1644 | enum built_in_function f; |
770ae6cc | 1645 | struct {unsigned int align : 24; unsigned int off_align : 8;} a; |
9df2c88c | 1646 | } u1; |
09f532c9 | 1647 | |
06ceef4e | 1648 | union tree_node *size_unit; |
8da1b058 RS |
1649 | union tree_node *name; |
1650 | union tree_node *context; | |
770ae6cc | 1651 | union tree_node *arguments; /* Also used for DECL_FIELD_OFFSET */ |
06ceef4e RK |
1652 | union tree_node *result; /* Also used for DECL_BIT_FIELD_TYPE */ |
1653 | union tree_node *initial; /* Also used for DECL_QUALIFIER */ | |
c5caa350 | 1654 | union tree_node *abstract_origin; |
8da1b058 | 1655 | union tree_node *assembler_name; |
868e8789 | 1656 | union tree_node *section_name; |
77cf75a8 | 1657 | union tree_node *machine_attributes; |
9df2c88c | 1658 | struct rtx_def *rtl; /* RTL representation for object. */ |
0dfa1860 | 1659 | struct rtx_def *live_range_rtl; |
06ceef4e | 1660 | |
9df2c88c | 1661 | /* In FUNCTION_DECL, if it is inline, holds the saved insn chain. |
770ae6cc | 1662 | In FIELD_DECL, is DECL_FIELD_BIT_OFFSET. |
9df2c88c RK |
1663 | In PARM_DECL, holds an RTL for the stack slot |
1664 | of register where the data was actually passed. | |
1665 | Used by Chill and Java in LABEL_DECL and by C++ and Java in VAR_DECL. */ | |
77f934bb | 1666 | union { |
49ad7cfa | 1667 | struct function *f; |
77f934bb | 1668 | struct rtx_def *r; |
9df2c88c RK |
1669 | union tree_node *t; |
1670 | int i; | |
1671 | } u2; | |
1672 | ||
8da1b058 | 1673 | union tree_node *vindex; |
3bdf5ad1 | 1674 | HOST_WIDE_INT pointer_alias_set; |
8da1b058 RS |
1675 | /* Points to a structure whose details depend on the language in use. */ |
1676 | struct lang_decl *lang_specific; | |
1677 | }; | |
1678 | \f | |
1679 | /* Define the overall contents of a tree node. | |
1680 | It may be any of the structures declared above | |
1681 | for various types of node. */ | |
1682 | ||
1683 | union tree_node | |
1684 | { | |
1685 | struct tree_common common; | |
1686 | struct tree_int_cst int_cst; | |
1687 | struct tree_real_cst real_cst; | |
1688 | struct tree_string string; | |
1689 | struct tree_complex complex; | |
1690 | struct tree_identifier identifier; | |
1691 | struct tree_decl decl; | |
1692 | struct tree_type type; | |
1693 | struct tree_list list; | |
1694 | struct tree_vec vec; | |
1695 | struct tree_exp exp; | |
61131fa2 | 1696 | struct tree_block block; |
8da1b058 | 1697 | }; |
1d2a8985 | 1698 | \f |
81b3411c BS |
1699 | /* Standard named or nameless data types of the C compiler. */ |
1700 | ||
1701 | enum tree_index | |
1702 | { | |
1703 | TI_ERROR_MARK, | |
1704 | TI_INTQI_TYPE, | |
1705 | TI_INTHI_TYPE, | |
1706 | TI_INTSI_TYPE, | |
1707 | TI_INTDI_TYPE, | |
1708 | TI_INTTI_TYPE, | |
1709 | ||
1710 | TI_UINTQI_TYPE, | |
1711 | TI_UINTHI_TYPE, | |
1712 | TI_UINTSI_TYPE, | |
1713 | TI_UINTDI_TYPE, | |
1714 | TI_UINTTI_TYPE, | |
1715 | ||
81b3411c BS |
1716 | TI_INTEGER_ZERO, |
1717 | TI_INTEGER_ONE, | |
1718 | TI_NULL_POINTER, | |
1719 | ||
1720 | TI_SIZE_ZERO, | |
1721 | TI_SIZE_ONE, | |
770ae6cc RK |
1722 | |
1723 | TI_BITSIZE_ZERO, | |
1724 | TI_BITSIZE_ONE, | |
1725 | TI_BITSIZE_UNIT, | |
1726 | ||
81b3411c BS |
1727 | TI_COMPLEX_INTEGER_TYPE, |
1728 | TI_COMPLEX_FLOAT_TYPE, | |
1729 | TI_COMPLEX_DOUBLE_TYPE, | |
1730 | TI_COMPLEX_LONG_DOUBLE_TYPE, | |
1731 | ||
1732 | TI_FLOAT_TYPE, | |
1733 | TI_DOUBLE_TYPE, | |
1734 | TI_LONG_DOUBLE_TYPE, | |
1735 | ||
1736 | TI_VOID_TYPE, | |
1737 | TI_PTR_TYPE, | |
1738 | TI_CONST_PTR_TYPE, | |
1739 | TI_PTRDIFF_TYPE, | |
1740 | TI_VA_LIST_TYPE, | |
1741 | ||
4061f623 BS |
1742 | TI_V4SF_TYPE, |
1743 | TI_V4SI_TYPE, | |
1744 | TI_V8QI_TYPE, | |
1745 | TI_V4HI_TYPE, | |
1746 | TI_V2SI_TYPE, | |
1747 | ||
5b47282c GM |
1748 | TI_MAIN_IDENTIFIER, |
1749 | ||
81b3411c BS |
1750 | TI_MAX |
1751 | }; | |
1752 | ||
1753 | extern tree global_trees[TI_MAX]; | |
1754 | ||
1755 | #define error_mark_node global_trees[TI_ERROR_MARK] | |
1756 | ||
1757 | #define intQI_type_node global_trees[TI_INTQI_TYPE] | |
1758 | #define intHI_type_node global_trees[TI_INTHI_TYPE] | |
1759 | #define intSI_type_node global_trees[TI_INTSI_TYPE] | |
1760 | #define intDI_type_node global_trees[TI_INTDI_TYPE] | |
1761 | #define intTI_type_node global_trees[TI_INTTI_TYPE] | |
1762 | ||
1763 | #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE] | |
1764 | #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE] | |
1765 | #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE] | |
1766 | #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE] | |
1767 | #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE] | |
1768 | ||
81b3411c BS |
1769 | #define integer_zero_node global_trees[TI_INTEGER_ZERO] |
1770 | #define integer_one_node global_trees[TI_INTEGER_ONE] | |
1771 | #define size_zero_node global_trees[TI_SIZE_ZERO] | |
1772 | #define size_one_node global_trees[TI_SIZE_ONE] | |
770ae6cc RK |
1773 | #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO] |
1774 | #define bitsize_one_node global_trees[TI_BITSIZE_ONE] | |
1775 | #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT] | |
1776 | ||
81b3411c BS |
1777 | #define null_pointer_node global_trees[TI_NULL_POINTER] |
1778 | ||
1779 | #define float_type_node global_trees[TI_FLOAT_TYPE] | |
1780 | #define double_type_node global_trees[TI_DOUBLE_TYPE] | |
1781 | #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE] | |
1782 | ||
1783 | #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE] | |
1784 | #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE] | |
1785 | #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE] | |
1786 | #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE] | |
1787 | ||
1788 | #define void_type_node global_trees[TI_VOID_TYPE] | |
fc693822 | 1789 | /* The C type `void *'. */ |
81b3411c | 1790 | #define ptr_type_node global_trees[TI_PTR_TYPE] |
fc693822 | 1791 | /* The C type `const void *'. */ |
81b3411c BS |
1792 | #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE] |
1793 | #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE] | |
1794 | #define va_list_type_node global_trees[TI_VA_LIST_TYPE] | |
7145ef21 | 1795 | |
5b47282c GM |
1796 | #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER] |
1797 | #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node) | |
1798 | ||
4061f623 BS |
1799 | #define V4SF_type_node global_trees[TI_V4SF_TYPE] |
1800 | #define V4SI_type_node global_trees[TI_V4SI_TYPE] | |
1801 | #define V8QI_type_node global_trees[TI_V8QI_TYPE] | |
1802 | #define V4HI_type_node global_trees[TI_V4HI_TYPE] | |
1803 | #define V2SI_type_node global_trees[TI_V2SI_TYPE] | |
1804 | ||
7145ef21 MM |
1805 | /* An enumeration of the standard C integer types. These must be |
1806 | ordered so that shorter types appear before longer ones. */ | |
1807 | enum integer_type_kind | |
1808 | { | |
1809 | itk_char, | |
1810 | itk_signed_char, | |
1811 | itk_unsigned_char, | |
1812 | itk_short, | |
1813 | itk_unsigned_short, | |
1814 | itk_int, | |
1815 | itk_unsigned_int, | |
1816 | itk_long, | |
1817 | itk_unsigned_long, | |
1818 | itk_long_long, | |
1819 | itk_unsigned_long_long, | |
1820 | itk_none | |
1821 | }; | |
1822 | ||
1823 | typedef enum integer_type_kind integer_type_kind; | |
1824 | ||
1825 | /* The standard C integer types. Use integer_type_kind to index into | |
1826 | this array. */ | |
1827 | extern tree integer_types[itk_none]; | |
1828 | ||
1829 | #define char_type_node integer_types[itk_char] | |
1830 | #define signed_char_type_node integer_types[itk_signed_char] | |
1831 | #define unsigned_char_type_node integer_types[itk_unsigned_char] | |
1832 | #define short_integer_type_node integer_types[itk_short] | |
1833 | #define short_unsigned_type_node integer_types[itk_unsigned_short] | |
1834 | #define integer_type_node integer_types[itk_int] | |
1835 | #define unsigned_type_node integer_types[itk_unsigned_int] | |
1836 | #define long_integer_type_node integer_types[itk_long] | |
1837 | #define long_unsigned_type_node integer_types[itk_unsigned_long] | |
1838 | #define long_long_integer_type_node integer_types[itk_long_long] | |
1839 | #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long] | |
1840 | ||
81b3411c | 1841 | \f |
f837a861 MM |
1842 | #define NULL_TREE (tree) NULL |
1843 | ||
e5d70561 RK |
1844 | /* The following functions accept a wide integer argument. Rather than |
1845 | having to cast on every function call, we use a macro instead, that is | |
1846 | defined here and in rtl.h. */ | |
1847 | ||
1848 | #ifndef exact_log2 | |
a1d061a1 JL |
1849 | #define exact_log2(N) exact_log2_wide ((unsigned HOST_WIDE_INT) (N)) |
1850 | #define floor_log2(N) floor_log2_wide ((unsigned HOST_WIDE_INT) (N)) | |
e5d70561 | 1851 | #endif |
58782098 KG |
1852 | extern int exact_log2_wide PARAMS ((unsigned HOST_WIDE_INT)); |
1853 | extern int floor_log2_wide PARAMS ((unsigned HOST_WIDE_INT)); | |
e5d70561 | 1854 | |
520a57c8 ZW |
1855 | /* Approximate positive square root of a host double. This is for |
1856 | statistical reports, not code generation. */ | |
1857 | extern double approx_sqrt PARAMS ((double)); | |
1858 | ||
58782098 | 1859 | extern char *permalloc PARAMS ((int)); |
58782098 | 1860 | extern char *expralloc PARAMS ((int)); |
8da1b058 | 1861 | |
c5620996 GK |
1862 | /* Compute the number of bytes occupied by 'node'. This routine only |
1863 | looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */ | |
1864 | ||
1865 | extern size_t tree_size PARAMS ((tree)); | |
1866 | ||
8da1b058 RS |
1867 | /* Lowest level primitive for allocating a node. |
1868 | The TREE_CODE is the only argument. Contents are initialized | |
1869 | to zero except for a few of the common fields. */ | |
1870 | ||
58782098 KG |
1871 | extern tree make_node PARAMS ((enum tree_code)); |
1872 | extern tree make_lang_type PARAMS ((enum tree_code)); | |
1873 | extern tree (*make_lang_type_fn) PARAMS ((enum tree_code)); | |
8da1b058 RS |
1874 | |
1875 | /* Make a copy of a node, with all the same contents except | |
1876 | for TREE_PERMANENT. (The copy is permanent | |
1877 | iff nodes being made now are permanent.) */ | |
1878 | ||
58782098 | 1879 | extern tree copy_node PARAMS ((tree)); |
8da1b058 RS |
1880 | |
1881 | /* Make a copy of a chain of TREE_LIST nodes. */ | |
1882 | ||
58782098 | 1883 | extern tree copy_list PARAMS ((tree)); |
8da1b058 RS |
1884 | |
1885 | /* Make a TREE_VEC. */ | |
1886 | ||
58782098 | 1887 | extern tree make_tree_vec PARAMS ((int)); |
8da1b058 RS |
1888 | |
1889 | /* Return the (unique) IDENTIFIER_NODE node for a given name. | |
1890 | The name is supplied as a char *. */ | |
1891 | ||
58782098 | 1892 | extern tree get_identifier PARAMS ((const char *)); |
8da1b058 | 1893 | |
6b9300aa RK |
1894 | /* If an identifier with the name TEXT (a null-terminated string) has |
1895 | previously been referred to, return that node; otherwise return | |
1896 | NULL_TREE. */ | |
1897 | ||
58782098 | 1898 | extern tree maybe_get_identifier PARAMS ((const char *)); |
6b9300aa | 1899 | |
8da1b058 RS |
1900 | /* Construct various types of nodes. */ |
1901 | ||
e5d70561 | 1902 | #define build_int_2(LO,HI) \ |
f9e158c3 | 1903 | build_int_2_wide ((unsigned HOST_WIDE_INT) (LO), (HOST_WIDE_INT) (HI)) |
e5d70561 | 1904 | |
58782098 KG |
1905 | extern tree build PARAMS ((enum tree_code, tree, ...)); |
1906 | extern tree build_nt PARAMS ((enum tree_code, ...)); | |
1907 | extern tree build_parse_node PARAMS ((enum tree_code, ...)); | |
1908 | ||
f9e158c3 | 1909 | extern tree build_int_2_wide PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT)); |
58782098 KG |
1910 | extern tree build_real PARAMS ((tree, REAL_VALUE_TYPE)); |
1911 | extern tree build_real_from_int_cst PARAMS ((tree, tree)); | |
1912 | extern tree build_complex PARAMS ((tree, tree, tree)); | |
1913 | extern tree build_string PARAMS ((int, const char *)); | |
1914 | extern tree build1 PARAMS ((enum tree_code, tree, tree)); | |
1915 | extern tree build_tree_list PARAMS ((tree, tree)); | |
58782098 KG |
1916 | extern tree build_decl PARAMS ((enum tree_code, tree, tree)); |
1917 | extern tree build_block PARAMS ((tree, tree, tree, tree, tree)); | |
1918 | extern tree build_expr_wfl PARAMS ((tree, const char *, int, int)); | |
8da1b058 RS |
1919 | |
1920 | /* Construct various nodes representing data types. */ | |
1921 | ||
58782098 KG |
1922 | extern tree make_signed_type PARAMS ((int)); |
1923 | extern tree make_unsigned_type PARAMS ((int)); | |
fed3cef0 | 1924 | extern void initialize_sizetypes PARAMS ((void)); |
58782098 KG |
1925 | extern void set_sizetype PARAMS ((tree)); |
1926 | extern tree signed_or_unsigned_type PARAMS ((int, tree)); | |
1927 | extern void fixup_unsigned_type PARAMS ((tree)); | |
1928 | extern tree build_pointer_type PARAMS ((tree)); | |
1929 | extern tree build_reference_type PARAMS ((tree)); | |
12e1243e | 1930 | extern tree build_type_no_quals PARAMS ((tree)); |
58782098 KG |
1931 | extern tree build_index_type PARAMS ((tree)); |
1932 | extern tree build_index_2_type PARAMS ((tree, tree)); | |
1933 | extern tree build_array_type PARAMS ((tree, tree)); | |
1934 | extern tree build_function_type PARAMS ((tree, tree)); | |
1935 | extern tree build_method_type PARAMS ((tree, tree)); | |
1936 | extern tree build_offset_type PARAMS ((tree, tree)); | |
1937 | extern tree build_complex_type PARAMS ((tree)); | |
1938 | extern tree array_type_nelts PARAMS ((tree)); | |
1939 | ||
1940 | extern tree value_member PARAMS ((tree, tree)); | |
1941 | extern tree purpose_member PARAMS ((tree, tree)); | |
1942 | extern tree binfo_member PARAMS ((tree, tree)); | |
05bccae2 | 1943 | extern unsigned int attribute_hash_list PARAMS ((tree)); |
58782098 KG |
1944 | extern int attribute_list_equal PARAMS ((tree, tree)); |
1945 | extern int attribute_list_contained PARAMS ((tree, tree)); | |
1946 | extern int tree_int_cst_equal PARAMS ((tree, tree)); | |
1947 | extern int tree_int_cst_lt PARAMS ((tree, tree)); | |
56cb9733 | 1948 | extern int tree_int_cst_compare PARAMS ((tree, tree)); |
665f2503 RK |
1949 | extern int host_integerp PARAMS ((tree, int)); |
1950 | extern HOST_WIDE_INT tree_low_cst PARAMS ((tree, int)); | |
a49a6a68 | 1951 | extern int tree_int_cst_msb PARAMS ((tree)); |
58782098 | 1952 | extern int tree_int_cst_sgn PARAMS ((tree)); |
a36556a8 ZW |
1953 | extern int tree_expr_nonnegative_p PARAMS ((tree)); |
1954 | extern int rtl_expr_nonnegative_p PARAMS ((struct rtx_def *)); | |
58782098 KG |
1955 | extern int index_type_equal PARAMS ((tree, tree)); |
1956 | extern tree get_inner_array_type PARAMS ((tree)); | |
12cfc830 | 1957 | |
f837a861 MM |
1958 | /* From expmed.c. Since rtl.h is included after tree.h, we can't |
1959 | put the prototype here. Rtl.h does declare the prototype if | |
1960 | tree.h had been included. */ | |
1961 | ||
58782098 | 1962 | extern tree make_tree PARAMS ((tree, struct rtx_def *)); |
8da1b058 | 1963 | \f |
bad1b4ba RK |
1964 | /* Return a type like TTYPE except that its TYPE_ATTRIBUTES |
1965 | is ATTRIBUTE. | |
1966 | ||
1967 | Such modified types already made are recorded so that duplicates | |
1968 | are not made. */ | |
1969 | ||
58782098 KG |
1970 | extern tree build_type_attribute_variant PARAMS ((tree, tree)); |
1971 | extern tree build_decl_attribute_variant PARAMS ((tree, tree)); | |
bad1b4ba | 1972 | |
58782098 KG |
1973 | extern tree merge_machine_decl_attributes PARAMS ((tree, tree)); |
1974 | extern tree merge_machine_type_attributes PARAMS ((tree, tree)); | |
d9525bec BK |
1975 | |
1976 | /* Split a list of declspecs and attributes into two. */ | |
1977 | ||
58782098 | 1978 | extern void split_specs_attrs PARAMS ((tree, tree *, tree *)); |
d9525bec BK |
1979 | |
1980 | /* Strip attributes from a list of combined specs and attrs. */ | |
1981 | ||
58782098 | 1982 | extern tree strip_attrs PARAMS ((tree)); |
d9525bec | 1983 | |
9c130398 DE |
1984 | /* Return 1 if an attribute and its arguments are valid for a decl or type. */ |
1985 | ||
58782098 | 1986 | extern int valid_machine_attribute PARAMS ((tree, tree, tree, tree)); |
9c130398 DE |
1987 | |
1988 | /* Given a tree node and a string, return non-zero if the tree node is | |
1989 | a valid attribute name for the string. */ | |
1990 | ||
58782098 | 1991 | extern int is_attribute_p PARAMS ((const char *, tree)); |
9c130398 DE |
1992 | |
1993 | /* Given an attribute name and a list of attributes, return the list element | |
1994 | of the attribute or NULL_TREE if not found. */ | |
1995 | ||
58782098 | 1996 | extern tree lookup_attribute PARAMS ((const char *, tree)); |
6cb3d314 DE |
1997 | |
1998 | /* Given two attributes lists, return a list of their union. */ | |
1999 | ||
58782098 | 2000 | extern tree merge_attributes PARAMS ((tree, tree)); |
9c130398 | 2001 | |
3932261a MM |
2002 | /* Given a type node TYPE and a TYPE_QUALIFIER_SET, return a type for |
2003 | the same kind of data as TYPE describes. Variants point to the | |
2004 | "main variant" (which has no qualifiers set) via TYPE_MAIN_VARIANT, | |
2005 | and it points to a chain of other variants so that duplicate | |
2006 | variants are never made. Only main variants should ever appear as | |
2007 | types of expressions. */ | |
2008 | ||
58782098 | 2009 | extern tree build_qualified_type PARAMS ((tree, int)); |
3932261a MM |
2010 | |
2011 | /* Like build_qualified_type, but only deals with the `const' and | |
2012 | `volatile' qualifiers. This interface is retained for backwards | |
2013 | compatiblity with the various front-ends; new code should use | |
2014 | build_qualified_type instead. */ | |
8da1b058 | 2015 | |
3932261a MM |
2016 | #define build_type_variant(TYPE, CONST_P, VOLATILE_P) \ |
2017 | build_qualified_type (TYPE, \ | |
2018 | ((CONST_P) ? TYPE_QUAL_CONST : 0) \ | |
2019 | | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0)) | |
8da1b058 | 2020 | |
43100b14 RS |
2021 | /* Make a copy of a type node. */ |
2022 | ||
58782098 | 2023 | extern tree build_type_copy PARAMS ((tree)); |
43100b14 | 2024 | |
8da1b058 | 2025 | /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT, |
9328904c MM |
2026 | TYPE_ALIGN and TYPE_MODE fields. If called more than once on one |
2027 | node, does nothing except for the first time. */ | |
8da1b058 | 2028 | |
58782098 | 2029 | extern void layout_type PARAMS ((tree)); |
8da1b058 | 2030 | |
9328904c MM |
2031 | /* These functions allow a front-end to perform a manual layout of a |
2032 | RECORD_TYPE. (For instance, if the placement of subsequent fields | |
2033 | depends on the placement of fields so far.) Begin by calling | |
770ae6cc | 2034 | start_record_layout. Then, call place_field for each of the |
9328904c MM |
2035 | fields. Then, call finish_record_layout. See layout_type for the |
2036 | default way in which these functions are used. */ | |
2037 | ||
defd0dea | 2038 | typedef struct record_layout_info_s |
9328904c MM |
2039 | { |
2040 | /* The RECORD_TYPE that we are laying out. */ | |
2041 | tree t; | |
770ae6cc RK |
2042 | /* The offset into the record so far, in bytes, not including bits in |
2043 | BITPOS. */ | |
2044 | tree offset; | |
2045 | /* The last known alignment of SIZE. */ | |
2046 | unsigned int offset_align; | |
2047 | /* The bit position within the last OFFSET_ALIGN bits, in bits. */ | |
2048 | tree bitpos; | |
9328904c MM |
2049 | /* The alignment of the record so far, in bits. */ |
2050 | unsigned int record_align; | |
770ae6cc RK |
2051 | /* The alignment of the record so far, not including padding, in bits. */ |
2052 | unsigned int unpacked_align; | |
9328904c MM |
2053 | /* The static variables (i.e., class variables, as opposed to |
2054 | instance variables) encountered in T. */ | |
2055 | tree pending_statics; | |
9328904c | 2056 | int packed_maybe_necessary; |
770ae6cc | 2057 | } *record_layout_info; |
9328904c | 2058 | |
770ae6cc | 2059 | extern record_layout_info start_record_layout PARAMS ((tree)); |
f2704b9f RK |
2060 | extern tree bit_from_pos PARAMS ((tree, tree)); |
2061 | extern tree byte_from_pos PARAMS ((tree, tree)); | |
2062 | extern void pos_from_byte PARAMS ((tree *, tree *, unsigned int, | |
2063 | tree)); | |
2064 | extern void pos_from_bit PARAMS ((tree *, tree *, unsigned int, | |
2065 | tree)); | |
2066 | extern void normalize_offset PARAMS ((tree *, tree *, | |
2067 | unsigned int)); | |
770ae6cc RK |
2068 | extern tree rli_size_unit_so_far PARAMS ((record_layout_info)); |
2069 | extern tree rli_size_so_far PARAMS ((record_layout_info)); | |
2070 | extern void normalize_rli PARAMS ((record_layout_info)); | |
2071 | extern void place_field PARAMS ((record_layout_info, tree)); | |
65e14bf5 | 2072 | extern void compute_record_mode PARAMS ((tree)); |
770ae6cc | 2073 | extern void finish_record_layout PARAMS ((record_layout_info)); |
9328904c | 2074 | |
8da1b058 RS |
2075 | /* Given a hashcode and a ..._TYPE node (for which the hashcode was made), |
2076 | return a canonicalized ..._TYPE node, so that duplicates are not made. | |
2077 | How the hash code is computed is up to the caller, as long as any two | |
2078 | callers that could hash identical-looking type nodes agree. */ | |
2079 | ||
05bccae2 | 2080 | extern tree type_hash_canon PARAMS ((unsigned int, tree)); |
8da1b058 RS |
2081 | |
2082 | /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node, | |
2083 | calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE | |
2084 | fields. Call this only once for any given decl node. | |
2085 | ||
2086 | Second argument is the boundary that this field can be assumed to | |
2087 | be starting at (in bits). Zero means it can be assumed aligned | |
2088 | on any boundary that may be needed. */ | |
2089 | ||
58782098 | 2090 | extern void layout_decl PARAMS ((tree, unsigned)); |
8da1b058 | 2091 | |
72c602fc RK |
2092 | /* Return the mode for data of a given size SIZE and mode class CLASS. |
2093 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. | |
2094 | The value is BLKmode if no other mode is found. This is like | |
2095 | mode_for_size, but is passed a tree. */ | |
2096 | ||
2097 | extern enum machine_mode mode_for_size_tree PARAMS ((tree, enum mode_class, | |
2098 | int)); | |
2099 | ||
8da1b058 RS |
2100 | /* Return an expr equal to X but certainly not valid as an lvalue. */ |
2101 | ||
58782098 KG |
2102 | extern tree non_lvalue PARAMS ((tree)); |
2103 | extern tree pedantic_non_lvalue PARAMS ((tree)); | |
8da1b058 | 2104 | |
58782098 | 2105 | extern tree convert PARAMS ((tree, tree)); |
729a2125 | 2106 | extern unsigned int expr_align PARAMS ((tree)); |
58782098 KG |
2107 | extern tree size_in_bytes PARAMS ((tree)); |
2108 | extern HOST_WIDE_INT int_size_in_bytes PARAMS ((tree)); | |
665f2503 RK |
2109 | extern tree bit_position PARAMS ((tree)); |
2110 | extern HOST_WIDE_INT int_bit_position PARAMS ((tree)); | |
770ae6cc RK |
2111 | extern tree byte_position PARAMS ((tree)); |
2112 | extern HOST_WIDE_INT int_byte_position PARAMS ((tree)); | |
fed3cef0 RK |
2113 | |
2114 | /* Define data structures, macros, and functions for handling sizes | |
2115 | and the various types used to represent sizes. */ | |
2116 | ||
2117 | enum size_type_kind | |
2118 | { | |
2119 | SIZETYPE, /* Normal representation of sizes in bytes. */ | |
2120 | SSIZETYPE, /* Signed representation of sizes in bytes. */ | |
2121 | USIZETYPE, /* Unsigned representation of sizes in bytes. */ | |
2122 | BITSIZETYPE, /* Normal representation of sizes in bits. */ | |
2123 | SBITSIZETYPE, /* Signed representation of sizes in bits. */ | |
2124 | UBITSIZETYPE, /* Unsifgned representation of sizes in bits. */ | |
2125 | TYPE_KIND_LAST}; | |
2126 | ||
2127 | extern tree sizetype_tab[(int) TYPE_KIND_LAST]; | |
2128 | ||
2129 | #define sizetype sizetype_tab[(int) SIZETYPE] | |
2130 | #define bitsizetype sizetype_tab[(int) BITSIZETYPE] | |
2131 | #define ssizetype sizetype_tab[(int) SSIZETYPE] | |
2132 | #define usizetype sizetype_tab[(int) USIZETYPE] | |
2133 | #define sbitsizetype sizetype_tab[(int) SBITSIZETYPE] | |
2134 | #define ubitsizetype sizetype_tab[(int) UBITSIZETYPE] | |
2135 | ||
58782098 | 2136 | extern tree size_binop PARAMS ((enum tree_code, tree, tree)); |
fed3cef0 RK |
2137 | extern tree size_diffop PARAMS ((tree, tree)); |
2138 | extern tree size_int_wide PARAMS ((HOST_WIDE_INT, | |
2139 | enum size_type_kind)); | |
2140 | extern tree size_int_type_wide PARAMS ((HOST_WIDE_INT, tree)); | |
06ceef4e | 2141 | |
fed3cef0 RK |
2142 | #define size_int_type(L, T) size_int_type_wide ((HOST_WIDE_INT) (L), T) |
2143 | #define size_int(L) size_int_wide ((HOST_WIDE_INT) (L), SIZETYPE) | |
2144 | #define ssize_int(L) size_int_wide ((HOST_WIDE_INT) (L), SSIZETYPE) | |
2145 | #define bitsize_int(L) size_int_wide ((HOST_WIDE_INT) (L), BITSIZETYPE) | |
2146 | #define sbitsize_int(L) size_int_wide ((HOST_WIDE_INT) (L), SBITSIZETYPE) | |
f8dac6eb | 2147 | |
58782098 | 2148 | extern tree round_up PARAMS ((tree, int)); |
36244024 | 2149 | extern tree round_down PARAMS ((tree, int)); |
58782098 KG |
2150 | extern tree get_pending_sizes PARAMS ((void)); |
2151 | extern void put_pending_sizes PARAMS ((tree)); | |
8da1b058 RS |
2152 | |
2153 | /* Type for sizes of data-type. */ | |
2154 | ||
f8dac6eb R |
2155 | #define BITS_PER_UNIT_LOG \ |
2156 | ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \ | |
2157 | + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \ | |
2158 | + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256)) | |
2159 | ||
8294accf | 2160 | /* If nonzero, an upper limit on alignment of structure fields, in bits. */ |
729a2125 | 2161 | extern unsigned int maximum_field_alignment; |
8294accf | 2162 | |
abc95ed3 | 2163 | /* If non-zero, the alignment of a bitstring or (power-)set value, in bits. */ |
729a2125 | 2164 | extern unsigned int set_alignment; |
8294accf | 2165 | |
8da1b058 RS |
2166 | /* Concatenate two lists (chains of TREE_LIST nodes) X and Y |
2167 | by making the last node in X point to Y. | |
2168 | Returns X, except if X is 0 returns Y. */ | |
2169 | ||
58782098 | 2170 | extern tree chainon PARAMS ((tree, tree)); |
8da1b058 RS |
2171 | |
2172 | /* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */ | |
2173 | ||
58782098 | 2174 | extern tree tree_cons PARAMS ((tree, tree, tree)); |
8da1b058 RS |
2175 | |
2176 | /* Return the last tree node in a chain. */ | |
2177 | ||
58782098 | 2178 | extern tree tree_last PARAMS ((tree)); |
8da1b058 RS |
2179 | |
2180 | /* Reverse the order of elements in a chain, and return the new head. */ | |
2181 | ||
58782098 | 2182 | extern tree nreverse PARAMS ((tree)); |
8da1b058 RS |
2183 | |
2184 | /* Returns the length of a chain of nodes | |
2185 | (number of chain pointers to follow before reaching a null pointer). */ | |
2186 | ||
58782098 | 2187 | extern int list_length PARAMS ((tree)); |
8da1b058 | 2188 | |
c3b247b4 JM |
2189 | /* Returns the number of FIELD_DECLs in a type. */ |
2190 | ||
2191 | extern int fields_length PARAMS ((tree)); | |
2192 | ||
8da1b058 RS |
2193 | /* integer_zerop (tree x) is nonzero if X is an integer constant of value 0 */ |
2194 | ||
58782098 | 2195 | extern int integer_zerop PARAMS ((tree)); |
8da1b058 RS |
2196 | |
2197 | /* integer_onep (tree x) is nonzero if X is an integer constant of value 1 */ | |
2198 | ||
58782098 | 2199 | extern int integer_onep PARAMS ((tree)); |
8da1b058 RS |
2200 | |
2201 | /* integer_all_onesp (tree x) is nonzero if X is an integer constant | |
2202 | all of whose significant bits are 1. */ | |
2203 | ||
58782098 | 2204 | extern int integer_all_onesp PARAMS ((tree)); |
8da1b058 RS |
2205 | |
2206 | /* integer_pow2p (tree x) is nonzero is X is an integer constant with | |
2207 | exactly one bit 1. */ | |
2208 | ||
58782098 | 2209 | extern int integer_pow2p PARAMS ((tree)); |
8da1b058 RS |
2210 | |
2211 | /* staticp (tree x) is nonzero if X is a reference to data allocated | |
2212 | at a fixed address in memory. */ | |
2213 | ||
58782098 | 2214 | extern int staticp PARAMS ((tree)); |
8da1b058 RS |
2215 | |
2216 | /* Gets an error if argument X is not an lvalue. | |
2217 | Also returns 1 if X is an lvalue, 0 if not. */ | |
2218 | ||
58782098 | 2219 | extern int lvalue_or_else PARAMS ((tree, const char *)); |
8da1b058 RS |
2220 | |
2221 | /* save_expr (EXP) returns an expression equivalent to EXP | |
2222 | but it can be used multiple times within context CTX | |
2223 | and only evaluate EXP once. */ | |
2224 | ||
58782098 | 2225 | extern tree save_expr PARAMS ((tree)); |
8da1b058 | 2226 | |
b7f6588d JM |
2227 | /* Returns the index of the first non-tree operand for CODE, or the number |
2228 | of operands if all are trees. */ | |
2229 | ||
58782098 | 2230 | extern int first_rtl_op PARAMS ((enum tree_code)); |
b7f6588d | 2231 | |
679163cf | 2232 | /* unsave_expr (EXP) returns an expression equivalent to EXP but it |
582db8e4 | 2233 | can be used multiple times and will evaluate EXP in its entirety |
679163cf MS |
2234 | each time. */ |
2235 | ||
58782098 | 2236 | extern tree unsave_expr PARAMS ((tree)); |
679163cf | 2237 | |
582db8e4 MM |
2238 | /* Reset EXP in place so that it can be expaned again. Does not |
2239 | recurse into subtrees. */ | |
2240 | ||
58782098 | 2241 | extern void unsave_expr_1 PARAMS ((tree)); |
582db8e4 MM |
2242 | |
2243 | /* Like unsave_expr_1, but recurses into all subtrees. */ | |
679163cf | 2244 | |
58782098 | 2245 | extern tree unsave_expr_now PARAMS ((tree)); |
679163cf | 2246 | |
582db8e4 MM |
2247 | /* If non-null, these are language-specific helper functions for |
2248 | unsave_expr_now. If present, LANG_UNSAVE is called before its | |
2249 | argument (an UNSAVE_EXPR) is to be unsaved, and all other | |
2250 | processing in unsave_expr_now is aborted. LANG_UNSAVE_EXPR_NOW is | |
2251 | called from unsave_expr_1 for language-specific tree codes. */ | |
58782098 KG |
2252 | extern void (*lang_unsave) PARAMS ((tree *)); |
2253 | extern void (*lang_unsave_expr_now) PARAMS ((tree)); | |
0a818f84 | 2254 | |
194c7c45 RH |
2255 | /* Return 0 if it is safe to evaluate EXPR multiple times, |
2256 | return 1 if it is safe if EXPR is unsaved afterward, or | |
2257 | return 2 if it is completely unsafe. */ | |
3fe30ff6 RH |
2258 | extern int unsafe_for_reeval PARAMS ((tree)); |
2259 | ||
2260 | /* If non-null, these are language-specific helper functions for | |
2261 | unsafe_for_reeval. Return negative to not handle some tree. */ | |
2262 | extern int (*lang_unsafe_for_reeval) PARAMS ((tree)); | |
8c57aea6 | 2263 | |
7380d707 RK |
2264 | /* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size |
2265 | or offset that depends on a field within a record. | |
2266 | ||
2267 | Note that we only allow such expressions within simple arithmetic | |
2268 | or a COND_EXPR. */ | |
2269 | ||
58782098 | 2270 | extern int contains_placeholder_p PARAMS ((tree)); |
7380d707 | 2271 | |
b7f6588d JM |
2272 | /* Return 1 if EXP contains any expressions that produce cleanups for an |
2273 | outer scope to deal with. Used by fold. */ | |
2274 | ||
58782098 | 2275 | extern int has_cleanups PARAMS ((tree)); |
b7f6588d | 2276 | |
7380d707 RK |
2277 | /* Given a tree EXP, a FIELD_DECL F, and a replacement value R, |
2278 | return a tree with all occurrences of references to F in a | |
2279 | PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP | |
2280 | contains only arithmetic expressions. */ | |
2281 | ||
58782098 | 2282 | extern tree substitute_in_expr PARAMS ((tree, tree, tree)); |
7380d707 | 2283 | |
90ca31be RS |
2284 | /* variable_size (EXP) is like save_expr (EXP) except that it |
2285 | is for the special case of something that is part of a | |
2286 | variable size for a data type. It makes special arrangements | |
2287 | to compute the value at the right time when the data type | |
2288 | belongs to a function parameter. */ | |
2289 | ||
58782098 | 2290 | extern tree variable_size PARAMS ((tree)); |
90ca31be | 2291 | |
8da1b058 RS |
2292 | /* stabilize_reference (EXP) returns an reference equivalent to EXP |
2293 | but it can be used multiple times | |
2294 | and only evaluate the subexpressions once. */ | |
2295 | ||
58782098 | 2296 | extern tree stabilize_reference PARAMS ((tree)); |
8da1b058 | 2297 | |
1c8b10bb RK |
2298 | /* Subroutine of stabilize_reference; this is called for subtrees of |
2299 | references. Any expression with side-effects must be put in a SAVE_EXPR | |
2300 | to ensure that it is only evaluated once. */ | |
2301 | ||
58782098 | 2302 | extern tree stabilize_reference_1 PARAMS ((tree)); |
1c8b10bb | 2303 | |
8da1b058 RS |
2304 | /* Return EXP, stripped of any conversions to wider types |
2305 | in such a way that the result of converting to type FOR_TYPE | |
2306 | is the same as if EXP were converted to FOR_TYPE. | |
2307 | If FOR_TYPE is 0, it signifies EXP's type. */ | |
2308 | ||
58782098 | 2309 | extern tree get_unwidened PARAMS ((tree, tree)); |
8da1b058 RS |
2310 | |
2311 | /* Return OP or a simpler expression for a narrower value | |
2312 | which can be sign-extended or zero-extended to give back OP. | |
2313 | Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended | |
2314 | or 0 if the value should be sign-extended. */ | |
2315 | ||
58782098 | 2316 | extern tree get_narrower PARAMS ((tree, int *)); |
8da1b058 RS |
2317 | |
2318 | /* Given MODE and UNSIGNEDP, return a suitable type-tree | |
2319 | with that mode. | |
2320 | The definition of this resides in language-specific code | |
2321 | as the repertoire of available types may vary. */ | |
2322 | ||
58782098 | 2323 | extern tree type_for_mode PARAMS ((enum machine_mode, int)); |
8da1b058 RS |
2324 | |
2325 | /* Given PRECISION and UNSIGNEDP, return a suitable type-tree | |
2326 | for an integer type with at least that precision. | |
2327 | The definition of this resides in language-specific code | |
2328 | as the repertoire of available types may vary. */ | |
2329 | ||
58782098 | 2330 | extern tree type_for_size PARAMS ((unsigned, int)); |
8da1b058 RS |
2331 | |
2332 | /* Given an integer type T, return a type like T but unsigned. | |
2333 | If T is unsigned, the value is T. | |
2334 | The definition of this resides in language-specific code | |
2335 | as the repertoire of available types may vary. */ | |
2336 | ||
58782098 | 2337 | extern tree unsigned_type PARAMS ((tree)); |
8da1b058 RS |
2338 | |
2339 | /* Given an integer type T, return a type like T but signed. | |
2340 | If T is signed, the value is T. | |
2341 | The definition of this resides in language-specific code | |
2342 | as the repertoire of available types may vary. */ | |
2343 | ||
58782098 | 2344 | extern tree signed_type PARAMS ((tree)); |
8da1b058 RS |
2345 | |
2346 | /* This function must be defined in the language-specific files. | |
2347 | expand_expr calls it to build the cleanup-expression for a TARGET_EXPR. | |
2348 | This is defined in a language-specific file. */ | |
2349 | ||
58782098 | 2350 | extern tree maybe_build_cleanup PARAMS ((tree)); |
8da1b058 RS |
2351 | |
2352 | /* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF, | |
2353 | look for nested component-refs or array-refs at constant positions | |
2354 | and find the ultimate containing object, which is returned. */ | |
2355 | ||
770ae6cc RK |
2356 | extern tree get_inner_reference PARAMS ((tree, HOST_WIDE_INT *, |
2357 | HOST_WIDE_INT *, tree *, | |
2358 | enum machine_mode *, int *, | |
2359 | int *, unsigned int *)); | |
8da1b058 | 2360 | |
140b60b4 MM |
2361 | /* Given a DECL or TYPE, return the scope in which it was declared, or |
2362 | NUL_TREE if there is no containing scope. */ | |
2363 | ||
58782098 | 2364 | extern tree get_containing_scope PARAMS ((tree)); |
140b60b4 | 2365 | |
8da1b058 RS |
2366 | /* Return the FUNCTION_DECL which provides this _DECL with its context, |
2367 | or zero if none. */ | |
58782098 | 2368 | extern tree decl_function_context PARAMS ((tree)); |
8da1b058 | 2369 | |
3635a54b RK |
2370 | /* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides |
2371 | this _DECL with its context, or zero if none. */ | |
58782098 | 2372 | extern tree decl_type_context PARAMS ((tree)); |
8da1b058 RS |
2373 | |
2374 | /* Given the FUNCTION_DECL for the current function, | |
2375 | return zero if it is ok for this function to be inline. | |
2376 | Otherwise return a warning message with a single %s | |
2377 | for the function's name. */ | |
2378 | ||
58782098 | 2379 | extern const char *function_cannot_inline_p PARAMS ((tree)); |
a3c11cd3 JW |
2380 | |
2381 | /* Return 1 if EXPR is the real constant zero. */ | |
58782098 | 2382 | extern int real_zerop PARAMS ((tree)); |
8da1b058 RS |
2383 | \f |
2384 | /* Declare commonly used variables for tree structure. */ | |
2385 | ||
8da1b058 RS |
2386 | /* Points to the name of the input file from which the current input |
2387 | being parsed originally came (before it went into cpp). */ | |
3b304f5b | 2388 | extern const char *input_filename; |
8da1b058 RS |
2389 | |
2390 | /* Current line number in input file. */ | |
2391 | extern int lineno; | |
2392 | ||
2393 | /* Nonzero for -pedantic switch: warn about anything | |
2394 | that standard C forbids. */ | |
2395 | extern int pedantic; | |
2396 | ||
4812480a JM |
2397 | /* Nonzero means lvalues are limited to those valid in pedantic ANSI C. |
2398 | Zero means allow extended lvalues. */ | |
2399 | ||
2400 | extern int pedantic_lvalues; | |
2401 | ||
8da1b058 RS |
2402 | /* Nonzero means can safely call expand_expr now; |
2403 | otherwise layout_type puts variable sizes onto `pending_sizes' instead. */ | |
2404 | ||
2405 | extern int immediate_size_expand; | |
2406 | ||
2407 | /* Points to the FUNCTION_DECL of the function whose body we are reading. */ | |
2408 | ||
2409 | extern tree current_function_decl; | |
2410 | ||
00262c8a ML |
2411 | /* Nonzero means a FUNC_BEGIN label was emitted. */ |
2412 | extern tree current_function_func_begin_label; | |
2413 | ||
8da1b058 RS |
2414 | /* Nonzero means all ..._TYPE nodes should be allocated permanently. */ |
2415 | ||
2416 | extern int all_types_permanent; | |
2417 | ||
a1d7ffe3 JM |
2418 | /* Pointer to function to compute the name to use to print a declaration. |
2419 | DECL is the declaration in question. | |
2420 | VERBOSITY determines what information will be printed: | |
2421 | 0: DECL_NAME, demangled as necessary. | |
2422 | 1: and scope information. | |
2423 | 2: and any other information that might be interesting, such as function | |
2424 | parameter types in C++. */ | |
2425 | ||
58782098 | 2426 | extern const char *(*decl_printable_name) PARAMS ((tree, int)); |
dc437e16 RS |
2427 | |
2428 | /* Pointer to function to finish handling an incomplete decl at the | |
2429 | end of compilation. */ | |
2430 | ||
58782098 | 2431 | extern void (*incomplete_decl_finalize_hook) PARAMS ((tree)); |
f425a887 | 2432 | |
3b304f5b | 2433 | extern const char *init_parse PARAMS ((const char *)); |
58782098 | 2434 | extern void finish_parse PARAMS ((void)); |
f425a887 | 2435 | |
26db82d8 BS |
2436 | extern const char * const language_string; |
2437 | ||
2438 | /* Declare a predefined function. Return the declaration. This function is | |
2439 | provided by each language frontend. */ | |
58782098 | 2440 | extern tree builtin_function PARAMS ((const char *, tree, int, |
26db82d8 BS |
2441 | enum built_in_class, |
2442 | const char *)); | |
8da1b058 | 2443 | \f |
143f1945 | 2444 | /* In tree.c */ |
58782098 | 2445 | extern char *perm_calloc PARAMS ((int, long)); |
881c6935 | 2446 | extern void clean_symbol_name PARAMS ((char *)); |
58782098 KG |
2447 | extern tree get_file_function_name_long PARAMS ((const char *)); |
2448 | extern tree get_set_constructor_bits PARAMS ((tree, char *, int)); | |
2449 | extern tree get_set_constructor_bytes PARAMS ((tree, | |
0f41302f | 2450 | unsigned char *, int)); |
58782098 | 2451 | extern tree get_callee_fndecl PARAMS ((tree)); |
143f1945 | 2452 | \f |
8da1b058 RS |
2453 | /* In stmt.c */ |
2454 | ||
58782098 KG |
2455 | extern int in_control_zone_p PARAMS ((void)); |
2456 | extern void expand_fixups PARAMS ((struct rtx_def *)); | |
2457 | extern tree expand_start_stmt_expr PARAMS ((void)); | |
2458 | extern tree expand_end_stmt_expr PARAMS ((tree)); | |
2459 | extern void expand_expr_stmt PARAMS ((tree)); | |
2460 | extern int warn_if_unused_value PARAMS ((tree)); | |
2461 | extern void expand_decl_init PARAMS ((tree)); | |
2462 | extern void clear_last_expr PARAMS ((void)); | |
2463 | extern void expand_label PARAMS ((tree)); | |
2464 | extern void expand_goto PARAMS ((tree)); | |
2465 | extern void expand_asm PARAMS ((tree)); | |
2466 | extern void expand_start_cond PARAMS ((tree, int)); | |
2467 | extern void expand_end_cond PARAMS ((void)); | |
2468 | extern void expand_start_else PARAMS ((void)); | |
2469 | extern void expand_start_elseif PARAMS ((tree)); | |
2470 | extern struct nesting *expand_start_loop PARAMS ((int)); | |
2471 | extern struct nesting *expand_start_loop_continue_elsewhere PARAMS ((int)); | |
f0de0c5d | 2472 | extern struct nesting *expand_start_null_loop PARAMS ((void)); |
58782098 KG |
2473 | extern void expand_loop_continue_here PARAMS ((void)); |
2474 | extern void expand_end_loop PARAMS ((void)); | |
f0de0c5d | 2475 | extern void expand_end_null_loop PARAMS ((void)); |
58782098 KG |
2476 | extern int expand_continue_loop PARAMS ((struct nesting *)); |
2477 | extern int expand_exit_loop PARAMS ((struct nesting *)); | |
2478 | extern int expand_exit_loop_if_false PARAMS ((struct nesting *, | |
d6b12657 | 2479 | tree)); |
58782098 | 2480 | extern int expand_exit_something PARAMS ((void)); |
f837a861 | 2481 | |
58782098 KG |
2482 | extern void expand_null_return PARAMS ((void)); |
2483 | extern void expand_return PARAMS ((tree)); | |
2484 | extern int optimize_tail_recursion PARAMS ((tree, struct rtx_def *)); | |
2485 | extern void expand_start_bindings_and_block PARAMS ((int, tree)); | |
a97901e6 MM |
2486 | #define expand_start_bindings(flags) \ |
2487 | expand_start_bindings_and_block(flags, NULL_TREE) | |
58782098 KG |
2488 | extern void expand_end_bindings PARAMS ((tree, int, int)); |
2489 | extern void warn_about_unused_variables PARAMS ((tree)); | |
2490 | extern void start_cleanup_deferral PARAMS ((void)); | |
2491 | extern void end_cleanup_deferral PARAMS ((void)); | |
deb5e280 JM |
2492 | extern int is_body_block PARAMS ((tree)); |
2493 | ||
58782098 KG |
2494 | extern void mark_block_as_eh_region PARAMS ((void)); |
2495 | extern void mark_block_as_not_eh_region PARAMS ((void)); | |
2496 | extern int is_eh_region PARAMS ((void)); | |
2497 | extern int conditional_context PARAMS ((void)); | |
2498 | extern tree last_cleanup_this_contour PARAMS ((void)); | |
2499 | extern int expand_dhc_cleanup PARAMS ((tree)); | |
2500 | extern int expand_dcc_cleanup PARAMS ((tree)); | |
2501 | extern void expand_start_case PARAMS ((int, tree, tree, | |
dff01034 | 2502 | const char *)); |
58782098 | 2503 | extern void expand_end_case PARAMS ((tree)); |
56cb9733 MM |
2504 | extern int add_case_node PARAMS ((tree, tree, |
2505 | tree, tree *)); | |
58782098 | 2506 | extern int pushcase PARAMS ((tree, |
d6b12657 RK |
2507 | tree (*) (tree, tree), |
2508 | tree, tree *)); | |
58782098 | 2509 | extern int pushcase_range PARAMS ((tree, tree, |
d6b12657 RK |
2510 | tree (*) (tree, tree), |
2511 | tree, tree *)); | |
58782098 KG |
2512 | extern void using_eh_for_cleanups PARAMS ((void)); |
2513 | extern int stmt_loop_nest_empty PARAMS ((void)); | |
8da1b058 RS |
2514 | |
2515 | /* In fold-const.c */ | |
2516 | ||
4b63dccb RK |
2517 | /* Fold constants as much as possible in an expression. |
2518 | Returns the simplified expression. | |
2519 | Acts only on the top level of the expression; | |
2520 | if the argument itself cannot be simplified, its | |
2521 | subexpressions are not changed. */ | |
2522 | ||
58782098 | 2523 | extern tree fold PARAMS ((tree)); |
4b63dccb | 2524 | |
58782098 | 2525 | extern int force_fit_type PARAMS ((tree, int)); |
05bccae2 RK |
2526 | extern int add_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, |
2527 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2528 | unsigned HOST_WIDE_INT *, | |
2529 | HOST_WIDE_INT *)); | |
2530 | extern int neg_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2531 | unsigned HOST_WIDE_INT *, | |
2532 | HOST_WIDE_INT *)); | |
2533 | extern int mul_double PARAMS ((unsigned HOST_WIDE_INT, | |
2534 | HOST_WIDE_INT, | |
2535 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2536 | unsigned HOST_WIDE_INT *, | |
2537 | HOST_WIDE_INT *)); | |
2538 | extern void lshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2539 | HOST_WIDE_INT, unsigned int, | |
2540 | unsigned HOST_WIDE_INT *, | |
2541 | HOST_WIDE_INT *, int)); | |
2542 | extern void rshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2543 | HOST_WIDE_INT, unsigned int, | |
2544 | unsigned HOST_WIDE_INT *, | |
2545 | HOST_WIDE_INT *, int)); | |
2546 | extern void lrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2547 | HOST_WIDE_INT, unsigned int, | |
2548 | unsigned HOST_WIDE_INT *, | |
2549 | HOST_WIDE_INT *)); | |
2550 | extern void rrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2551 | HOST_WIDE_INT, unsigned int, | |
2552 | unsigned HOST_WIDE_INT *, | |
2553 | HOST_WIDE_INT *)); | |
58782098 KG |
2554 | extern int operand_equal_p PARAMS ((tree, tree, int)); |
2555 | extern tree invert_truthvalue PARAMS ((tree)); | |
c530479e RH |
2556 | |
2557 | /* In builtins.c. Given a type, apply default promotions wrt unnamed | |
2558 | function arguments and return the new type. Return NULL_TREE if no | |
2559 | change. Required by any language that supports variadic arguments. */ | |
2560 | ||
58782098 | 2561 | extern tree (*lang_type_promotes_to) PARAMS ((tree)); |
94e9dc13 | 2562 | extern tree fold_builtin PARAMS ((tree)); |
8da1b058 RS |
2563 | \f |
2564 | /* The language front-end must define these functions. */ | |
2565 | ||
2566 | /* Function of no arguments for initializing lexical scanning. */ | |
58782098 | 2567 | extern void init_lex PARAMS ((void)); |
8da1b058 | 2568 | /* Function of no arguments for initializing the symbol table. */ |
58782098 | 2569 | extern void init_decl_processing PARAMS ((void)); |
8da1b058 | 2570 | |
9faa82d8 | 2571 | /* Function to identify which front-end produced the output file. */ |
58782098 | 2572 | extern const char *lang_identify PARAMS ((void)); |
c9591059 KG |
2573 | |
2574 | /* Called by report_error_function to print out function name. | |
2575 | * Default may be overridden by language front-ends. */ | |
58782098 | 2576 | extern void (*print_error_function) PARAMS ((const char *)); |
d0d4af87 | 2577 | |
78b099bd | 2578 | /* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy. */ |
58782098 | 2579 | extern void copy_lang_decl PARAMS ((tree)); |
78b099bd | 2580 | |
8da1b058 | 2581 | /* Function called with no arguments to parse and compile the input. */ |
58782098 | 2582 | extern int yyparse PARAMS ((void)); |
8da1b058 RS |
2583 | /* Functions for processing symbol declarations. */ |
2584 | /* Function to enter a new lexical scope. | |
2585 | Takes one argument: always zero when called from outside the front end. */ | |
58782098 | 2586 | extern void pushlevel PARAMS ((int)); |
8da1b058 RS |
2587 | /* Function to exit a lexical scope. It returns a BINDING for that scope. |
2588 | Takes three arguments: | |
2589 | KEEP -- nonzero if there were declarations in this scope. | |
2590 | REVERSE -- reverse the order of decls before returning them. | |
2591 | FUNCTIONBODY -- nonzero if this level is the body of a function. */ | |
58782098 | 2592 | extern tree poplevel PARAMS ((int, int, int)); |
69b78d8d | 2593 | /* Set the BLOCK node for the current scope level. */ |
58782098 | 2594 | extern void set_block PARAMS ((tree)); |
8da1b058 RS |
2595 | /* Function to add a decl to the current scope level. |
2596 | Takes one argument, a decl to add. | |
2597 | Returns that decl, or, if the same symbol is already declared, may | |
2598 | return a different decl for that name. */ | |
58782098 | 2599 | extern tree pushdecl PARAMS ((tree)); |
8da1b058 | 2600 | /* Function to return the chain of decls so far in the current scope level. */ |
58782098 | 2601 | extern tree getdecls PARAMS ((void)); |
8da1b058 | 2602 | /* Function to return the chain of structure tags in the current scope level. */ |
58782098 | 2603 | extern tree gettags PARAMS ((void)); |
a3c11cd3 | 2604 | |
58782098 | 2605 | extern tree build_range_type PARAMS ((tree, tree, tree)); |
a3c11cd3 | 2606 | |
a3c11cd3 | 2607 | /* Called after finishing a record, union or enumeral type. */ |
58782098 | 2608 | extern void rest_of_type_compilation PARAMS ((tree, int)); |
a3c11cd3 | 2609 | |
a0c33338 | 2610 | /* In alias.c */ |
bebe2280 RB |
2611 | extern void record_component_aliases PARAMS ((tree)); |
2612 | extern HOST_WIDE_INT get_alias_set PARAMS ((tree)); | |
1da68f56 RK |
2613 | extern int alias_sets_conflict_p PARAMS ((HOST_WIDE_INT, |
2614 | HOST_WIDE_INT)); | |
2615 | extern int readonly_fields_p PARAMS ((tree)); | |
2616 | extern int objects_must_conflict_p PARAMS ((tree, tree)); | |
bebe2280 RB |
2617 | |
2618 | /* In c-common.c */ | |
2619 | extern HOST_WIDE_INT lang_get_alias_set PARAMS ((tree)); | |
a0c33338 | 2620 | |
7584b89f RE |
2621 | struct obstack; |
2622 | ||
a1d061a1 | 2623 | /* In tree.c */ |
58782098 | 2624 | extern int really_constant_p PARAMS ((tree)); |
58782098 KG |
2625 | extern void set_identifier_size PARAMS ((int)); |
2626 | extern int int_fits_type_p PARAMS ((tree, tree)); | |
2627 | extern int tree_log2 PARAMS ((tree)); | |
05bccae2 | 2628 | extern int tree_floor_log2 PARAMS ((tree)); |
58782098 KG |
2629 | extern void preserve_data PARAMS ((void)); |
2630 | extern int object_permanent_p PARAMS ((tree)); | |
2631 | extern int type_precision PARAMS ((tree)); | |
2632 | extern int simple_cst_equal PARAMS ((tree, tree)); | |
05bccae2 | 2633 | extern int compare_tree_int PARAMS ((tree, unsigned int)); |
58782098 KG |
2634 | extern int type_list_equal PARAMS ((tree, tree)); |
2635 | extern int chain_member PARAMS ((tree, tree)); | |
2636 | extern int chain_member_purpose PARAMS ((tree, tree)); | |
2637 | extern int chain_member_value PARAMS ((tree, tree)); | |
2638 | extern tree listify PARAMS ((tree)); | |
05bccae2 RK |
2639 | extern tree type_hash_lookup PARAMS ((unsigned int, tree)); |
2640 | extern void type_hash_add PARAMS ((unsigned int, tree)); | |
2641 | extern unsigned int type_hash_list PARAMS ((tree)); | |
58782098 | 2642 | extern int simple_cst_list_equal PARAMS ((tree, tree)); |
58782098 KG |
2643 | extern void dump_tree_statistics PARAMS ((void)); |
2644 | extern void print_obstack_statistics PARAMS ((const char *, | |
37b37199 | 2645 | struct obstack *)); |
a1d061a1 | 2646 | #ifdef BUFSIZ |
a0c33338 RK |
2647 | extern void print_obstack_name PARAMS ((char *, FILE *, |
2648 | const char *)); | |
a1d061a1 | 2649 | #endif |
3b304f5b | 2650 | extern void expand_function_end PARAMS ((const char *, int, int)); |
58782098 | 2651 | extern void expand_function_start PARAMS ((tree, int)); |
a0c33338 | 2652 | |
58782098 KG |
2653 | extern int real_onep PARAMS ((tree)); |
2654 | extern int real_twop PARAMS ((tree)); | |
2655 | extern void start_identifier_warnings PARAMS ((void)); | |
2656 | extern void gcc_obstack_init PARAMS ((struct obstack *)); | |
2657 | extern void init_obstacks PARAMS ((void)); | |
58782098 KG |
2658 | extern void build_common_tree_nodes PARAMS ((int)); |
2659 | extern void build_common_tree_nodes_2 PARAMS ((int)); | |
9ccb25d5 | 2660 | extern void mark_tree_hashtable PARAMS ((void *)); |
a1d061a1 JL |
2661 | |
2662 | /* In function.c */ | |
58782098 KG |
2663 | extern void setjmp_protect_args PARAMS ((void)); |
2664 | extern void setjmp_protect PARAMS ((tree)); | |
2665 | extern void expand_main_function PARAMS ((void)); | |
2666 | extern void mark_varargs PARAMS ((void)); | |
2667 | extern void init_dummy_function_start PARAMS ((void)); | |
2668 | extern void expand_dummy_function_end PARAMS ((void)); | |
2669 | extern void init_function_for_compilation PARAMS ((void)); | |
36244024 | 2670 | extern void init_function_start PARAMS ((tree, const char *, int)); |
58782098 KG |
2671 | extern void assign_parms PARAMS ((tree)); |
2672 | extern void put_var_into_stack PARAMS ((tree)); | |
13eb1f7f | 2673 | extern void flush_addressof PARAMS ((tree)); |
58782098 KG |
2674 | extern void uninitialized_vars_warning PARAMS ((tree)); |
2675 | extern void setjmp_args_warning PARAMS ((void)); | |
2676 | extern void mark_all_temps_used PARAMS ((void)); | |
2677 | extern void init_temp_slots PARAMS ((void)); | |
2678 | extern void combine_temp_slots PARAMS ((void)); | |
2679 | extern void free_temp_slots PARAMS ((void)); | |
2680 | extern void pop_temp_slots PARAMS ((void)); | |
2681 | extern void push_temp_slots PARAMS ((void)); | |
2682 | extern void preserve_temp_slots PARAMS ((struct rtx_def *)); | |
05bccae2 | 2683 | extern void preserve_rtl_expr_temps PARAMS ((tree)); |
58782098 | 2684 | extern int aggregate_value_p PARAMS ((tree)); |
591ccf92 | 2685 | extern void free_temps_for_rtl_expr PARAMS ((tree)); |
58782098 | 2686 | extern void instantiate_virtual_regs PARAMS ((tree, struct rtx_def *)); |
d1b81779 | 2687 | extern void unshare_all_rtl PARAMS ((tree, struct rtx_def *)); |
58782098 KG |
2688 | extern int max_parm_reg_num PARAMS ((void)); |
2689 | extern void push_function_context PARAMS ((void)); | |
2690 | extern void pop_function_context PARAMS ((void)); | |
2691 | extern void push_function_context_to PARAMS ((tree)); | |
2692 | extern void pop_function_context_from PARAMS ((tree)); | |
a1d061a1 JL |
2693 | |
2694 | /* In print-rtl.c */ | |
2695 | #ifdef BUFSIZ | |
58782098 | 2696 | extern void print_rtl PARAMS ((FILE *, struct rtx_def *)); |
a1d061a1 JL |
2697 | #endif |
2698 | ||
2699 | /* In print-tree.c */ | |
58782098 | 2700 | extern void debug_tree PARAMS ((tree)); |
a1d061a1 | 2701 | #ifdef BUFSIZ |
a0c33338 RK |
2702 | extern void print_node PARAMS ((FILE *, const char *, tree, |
2703 | int)); | |
2704 | extern void print_node_brief PARAMS ((FILE *, const char *, tree, | |
2705 | int)); | |
58782098 | 2706 | extern void indent_to PARAMS ((FILE *, int)); |
a1d061a1 JL |
2707 | #endif |
2708 | ||
2709 | /* In expr.c */ | |
58782098 KG |
2710 | extern void emit_queue PARAMS ((void)); |
2711 | extern int apply_args_register_offset PARAMS ((int)); | |
a1d061a1 | 2712 | extern struct rtx_def *expand_builtin_return_addr |
58782098 KG |
2713 | PARAMS ((enum built_in_function, int, struct rtx_def *)); |
2714 | extern void do_pending_stack_adjust PARAMS ((void)); | |
a0c33338 RK |
2715 | extern struct rtx_def *expand_assignment PARAMS ((tree, tree, int, |
2716 | int)); | |
2717 | extern struct rtx_def *store_expr PARAMS ((tree, | |
2718 | struct rtx_def *, | |
a1d061a1 | 2719 | int)); |
58782098 | 2720 | extern void check_max_integer_computation_mode PARAMS ((tree)); |
a1d061a1 JL |
2721 | |
2722 | /* In emit-rtl.c */ | |
591ccf92 | 2723 | extern void start_sequence_for_rtl_expr PARAMS ((tree)); |
3cce094d KG |
2724 | extern struct rtx_def *emit_line_note_after PARAMS ((const char *, int, |
2725 | struct rtx_def *)); | |
2726 | extern struct rtx_def *emit_line_note PARAMS ((const char *, int)); | |
2727 | extern struct rtx_def *emit_line_note_force PARAMS ((const char *, int)); | |
a1d061a1 | 2728 | |
3a8c995b | 2729 | /* In calls.c */ |
f2d33f13 | 2730 | |
f2d33f13 | 2731 | extern int setjmp_call_p PARAMS ((tree)); |
3a8c995b | 2732 | |
a0c33338 RK |
2733 | /* In front end. */ |
2734 | ||
58782098 KG |
2735 | extern int mark_addressable PARAMS ((tree)); |
2736 | extern void incomplete_type_error PARAMS ((tree, tree)); | |
58782098 | 2737 | extern void print_lang_statistics PARAMS ((void)); |
58782098 | 2738 | extern tree truthvalue_conversion PARAMS ((tree)); |
58782098 | 2739 | extern void split_specs_attrs PARAMS ((tree, tree *, tree *)); |
a1d061a1 | 2740 | #ifdef BUFSIZ |
58782098 KG |
2741 | extern void print_lang_decl PARAMS ((FILE *, tree, int)); |
2742 | extern void print_lang_type PARAMS ((FILE *, tree, int)); | |
2743 | extern void print_lang_identifier PARAMS ((FILE *, tree, int)); | |
a1d061a1 | 2744 | #endif |
58782098 KG |
2745 | extern int global_bindings_p PARAMS ((void)); |
2746 | extern void insert_block PARAMS ((tree)); | |
a1d061a1 JL |
2747 | |
2748 | /* In integrate.c */ | |
f93dacbd | 2749 | extern void save_for_inline PARAMS ((tree)); |
58782098 KG |
2750 | extern void set_decl_abstract_flags PARAMS ((tree, int)); |
2751 | extern void output_inline_function PARAMS ((tree)); | |
1cfdcc15 | 2752 | extern void set_decl_origin_self PARAMS ((tree)); |
a1d061a1 | 2753 | |
a0c33338 | 2754 | /* In front end. */ |
58782098 | 2755 | extern void set_yydebug PARAMS ((int)); |
a1d061a1 JL |
2756 | |
2757 | /* In stor-layout.c */ | |
58782098 | 2758 | extern void fixup_signed_type PARAMS ((tree)); |
a1d061a1 JL |
2759 | |
2760 | /* varasm.c */ | |
58782098 KG |
2761 | extern void make_decl_rtl PARAMS ((tree, const char *, int)); |
2762 | extern void make_decl_one_only PARAMS ((tree)); | |
2763 | extern int supports_one_only PARAMS ((void)); | |
2764 | extern void variable_section PARAMS ((tree, int)); | |
a1d061a1 JL |
2765 | |
2766 | /* In fold-const.c */ | |
58782098 | 2767 | extern int div_and_round_double PARAMS ((enum tree_code, int, |
05bccae2 RK |
2768 | unsigned HOST_WIDE_INT, |
2769 | HOST_WIDE_INT, | |
2770 | unsigned HOST_WIDE_INT, | |
2771 | HOST_WIDE_INT, | |
2772 | unsigned HOST_WIDE_INT *, | |
2773 | HOST_WIDE_INT *, | |
2774 | unsigned HOST_WIDE_INT *, | |
2775 | HOST_WIDE_INT *)); | |
a1d061a1 JL |
2776 | |
2777 | /* In stmt.c */ | |
58782098 KG |
2778 | extern void emit_nop PARAMS ((void)); |
2779 | extern void expand_computed_goto PARAMS ((tree)); | |
2780 | extern struct rtx_def *label_rtx PARAMS ((tree)); | |
2781 | extern void expand_asm_operands PARAMS ((tree, tree, tree, tree, int, | |
3b304f5b | 2782 | const char *, int)); |
58782098 KG |
2783 | extern int any_pending_cleanups PARAMS ((int)); |
2784 | extern void init_stmt PARAMS ((void)); | |
2785 | extern void init_stmt_for_function PARAMS ((void)); | |
2786 | extern int drop_through_at_end_p PARAMS ((void)); | |
2787 | extern void expand_start_target_temps PARAMS ((void)); | |
2788 | extern void expand_end_target_temps PARAMS ((void)); | |
2789 | extern void expand_elseif PARAMS ((tree)); | |
7393c642 | 2790 | extern void save_stack_pointer PARAMS ((void)); |
58782098 KG |
2791 | extern void expand_decl PARAMS ((tree)); |
2792 | extern int expand_decl_cleanup PARAMS ((tree, tree)); | |
2793 | extern void expand_anon_union_decl PARAMS ((tree, tree, tree)); | |
2794 | extern void move_cleanups_up PARAMS ((void)); | |
2795 | extern void expand_start_case_dummy PARAMS ((void)); | |
2796 | extern void expand_end_case_dummy PARAMS ((void)); | |
2797 | extern tree case_index_expr_type PARAMS ((void)); | |
2798 | extern HOST_WIDE_INT all_cases_count PARAMS ((tree, int *)); | |
2799 | extern void check_for_full_enumeration_handling PARAMS ((tree)); | |
2800 | extern void declare_nonlocal_label PARAMS ((tree)); | |
31ed227b | 2801 | #ifdef BUFSIZ |
58782098 | 2802 | extern void lang_print_xnode PARAMS ((FILE *, tree, int)); |
31ed227b JL |
2803 | #endif |
2804 | ||
a1d061a1 | 2805 | |
496651db MM |
2806 | /* If KIND=='I', return a suitable global initializer (constructor) name. |
2807 | If KIND=='D', return a suitable global clean-up (destructor) name. */ | |
58782098 | 2808 | extern tree get_file_function_name PARAMS ((int)); |
af4142d5 JM |
2809 | \f |
2810 | /* Interface of the DWARF2 unwind info support. */ | |
2811 | ||
2812 | /* Decide whether we want to emit frame unwind information for the current | |
2813 | translation unit. */ | |
2814 | ||
58782098 | 2815 | extern int dwarf2out_do_frame PARAMS ((void)); |
af4142d5 JM |
2816 | |
2817 | /* Generate a new label for the CFI info to refer to. */ | |
2818 | ||
58782098 | 2819 | extern char *dwarf2out_cfi_label PARAMS ((void)); |
af4142d5 JM |
2820 | |
2821 | /* Entry point to update the canonical frame address (CFA). */ | |
2822 | ||
d3e3972c | 2823 | extern void dwarf2out_def_cfa PARAMS ((const char *, unsigned, long)); |
af4142d5 JM |
2824 | |
2825 | /* Add the CFI for saving a register window. */ | |
2826 | ||
d3e3972c | 2827 | extern void dwarf2out_window_save PARAMS ((const char *)); |
af4142d5 JM |
2828 | |
2829 | /* Add a CFI to update the running total of the size of arguments pushed | |
2830 | onto the stack. */ | |
2831 | ||
d3e3972c | 2832 | extern void dwarf2out_args_size PARAMS ((const char *, long)); |
af4142d5 JM |
2833 | |
2834 | /* Entry point for saving a register to the stack. */ | |
2835 | ||
d3e3972c | 2836 | extern void dwarf2out_reg_save PARAMS ((const char *, unsigned, long)); |
af4142d5 JM |
2837 | |
2838 | /* Entry point for saving the return address in the stack. */ | |
2839 | ||
d3e3972c | 2840 | extern void dwarf2out_return_save PARAMS ((const char *, long)); |
af4142d5 JM |
2841 | |
2842 | /* Entry point for saving the return address in a register. */ | |
2843 | ||
d3e3972c | 2844 | extern void dwarf2out_return_reg PARAMS ((const char *, unsigned)); |
af4142d5 JM |
2845 | |
2846 | /* Output a marker (i.e. a label) for the beginning of a function, before | |
2847 | the prologue. */ | |
2848 | ||
58782098 | 2849 | extern void dwarf2out_begin_prologue PARAMS ((void)); |
af4142d5 JM |
2850 | |
2851 | /* Output a marker (i.e. a label) for the absolute end of the generated | |
2852 | code for a function definition. */ | |
2853 | ||
58782098 | 2854 | extern void dwarf2out_end_epilogue PARAMS ((void)); |
9a6bb3f7 | 2855 | \f |
987009bf ZW |
2856 | /* Redefine abort to report an internal error w/o coredump, and |
2857 | reporting the location of the error in the source file. This logic | |
2858 | is duplicated in rtl.h and tree.h because every file that needs the | |
2859 | special abort includes one or both. toplev.h gets too few files, | |
2860 | system.h gets too many. */ | |
2861 | ||
58782098 | 2862 | extern void fancy_abort PARAMS ((const char *, int, const char *)) |
987009bf | 2863 | ATTRIBUTE_NORETURN; |
fbfc1192 | 2864 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) |