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b0278d39 | 1 | /* The lang_hooks data structure. |
abd3e6b5 | 2 | Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
8c4c00c1 | 3 | Free Software Foundation, Inc. |
e8602e56 | 4 | |
4642865b | 5 | This file is part of GCC. |
e8602e56 | 6 | |
4642865b | 7 | GCC is free software; you can redistribute it and/or modify |
e8602e56 | 8 | it under the terms of the GNU General Public License as published by |
8c4c00c1 | 9 | the Free Software Foundation; either version 3, or (at your option) |
e8602e56 | 10 | any later version. |
11 | ||
4642865b | 12 | GCC is distributed in the hope that it will be useful, |
e8602e56 | 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 | |
8c4c00c1 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
e8602e56 | 20 | |
21 | #ifndef GCC_LANG_HOOKS_H | |
22 | #define GCC_LANG_HOOKS_H | |
23 | ||
b467ecc1 | 24 | /* This file should be #include-d after tree.h. */ |
25 | ||
6c7ff025 | 26 | struct diagnostic_context; |
b8c23db3 | 27 | struct diagnostic_info; |
6c7ff025 | 28 | |
1e8e9920 | 29 | struct gimplify_omp_ctx; |
30 | ||
1c79cc8c | 31 | struct array_descr_info; |
32 | ||
b7fced5e | 33 | /* A print hook for print_tree (). */ |
3ad4992f | 34 | typedef void (*lang_print_tree_hook) (FILE *, tree, int indent); |
b7fced5e | 35 | |
03a61d93 | 36 | enum classify_record |
37 | { RECORD_IS_STRUCT, RECORD_IS_CLASS, RECORD_IS_INTERFACE }; | |
38 | ||
b0278d39 | 39 | /* The following hooks are documented in langhooks.c. Must not be |
40 | NULL. */ | |
41 | ||
42 | struct lang_hooks_for_tree_inlining | |
43 | { | |
1f8a6ff8 | 44 | bool (*var_mod_type_p) (tree, tree); |
b0278d39 | 45 | }; |
46 | ||
833eb724 | 47 | struct lang_hooks_for_callgraph |
48 | { | |
ec1e35b2 | 49 | /* The node passed is a language-specific tree node. If its contents |
50 | are relevant to use of other declarations, mark them. */ | |
e83c4efa | 51 | tree (*analyze_expr) (tree *, int *); |
833eb724 | 52 | }; |
53 | ||
3119c950 | 54 | /* The following hooks are used by tree-dump.c. */ |
55 | ||
56 | struct lang_hooks_for_tree_dump | |
57 | { | |
6ef828f9 | 58 | /* Dump language-specific parts of tree nodes. Returns nonzero if it |
3119c950 | 59 | does not want the usual dumping of the second argument. */ |
3ad4992f | 60 | bool (*dump_tree) (void *, tree); |
3119c950 | 61 | |
62 | /* Determine type qualifiers in a language-specific way. */ | |
f8fd23c0 | 63 | int (*type_quals) (const_tree); |
3119c950 | 64 | }; |
65 | ||
a1f71e15 | 66 | /* Hooks related to types. */ |
67 | ||
68 | struct lang_hooks_for_types | |
69 | { | |
771d21fa | 70 | /* Return a new type (with the indicated CODE), doing whatever |
71 | language-specific processing is required. */ | |
3ad4992f | 72 | tree (*make_type) (enum tree_code); |
8851e806 | 73 | |
03a61d93 | 74 | /* Return what kind of RECORD_TYPE this is, mainly for purposes of |
75 | debug information. If not defined, record types are assumed to | |
76 | be structures. */ | |
77 | enum classify_record (*classify_record) (tree); | |
78 | ||
771d21fa | 79 | /* Given MODE and UNSIGNEDP, return a suitable type-tree with that |
80 | mode. */ | |
3ad4992f | 81 | tree (*type_for_mode) (enum machine_mode, int); |
771d21fa | 82 | |
83 | /* Given PRECISION and UNSIGNEDP, return a suitable type-tree for an | |
84 | integer type with at least that precision. */ | |
3ad4992f | 85 | tree (*type_for_size) (unsigned, int); |
4070745f | 86 | |
0e4744ac | 87 | /* True if the type is an instantiation of a generic type, |
88 | e.g. C++ template implicit specializations. */ | |
f8fd23c0 | 89 | bool (*generic_p) (const_tree); |
0e4744ac | 90 | |
7c48f38c | 91 | /* Returns the TREE_VEC of elements of a given generic argument pack. */ |
92 | tree (*get_argument_pack_elems) (const_tree); | |
93 | ||
63c62881 | 94 | /* Given a type, apply default promotions to unnamed function |
95 | arguments and return the new type. Return the same type if no | |
96 | change. Required by any language that supports variadic | |
1fa3a8f6 | 97 | arguments. The default hook dies. */ |
3ad4992f | 98 | tree (*type_promotes_to) (tree); |
63c62881 | 99 | |
b268e47e | 100 | /* Register TYPE as a builtin type with the indicated NAME. The |
101 | TYPE is placed in the outermost lexical scope. The semantics | |
102 | should be analogous to: | |
103 | ||
104 | typedef TYPE NAME; | |
105 | ||
106 | in C. The default hook ignores the declaration. */ | |
107 | void (*register_builtin_type) (tree, const char *); | |
108 | ||
1dd25100 | 109 | /* This routine is called in tree.c to print an error message for |
110 | invalid use of an incomplete type. VALUE is the expression that | |
111 | was used (or 0 if that isn't known) and TYPE is the type that was | |
112 | invalid. */ | |
f8fd23c0 | 113 | void (*incomplete_type_error) (const_tree value, const_tree type); |
a26d3281 | 114 | |
b225134e | 115 | /* Called from assign_temp to return the maximum size, if there is one, |
116 | for a type. */ | |
f8fd23c0 | 117 | tree (*max_size) (const_tree); |
b225134e | 118 | |
1e8e9920 | 119 | /* Register language specific type size variables as potentially OpenMP |
120 | firstprivate variables. */ | |
121 | void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree); | |
122 | ||
743f8dd1 | 123 | /* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes. |
124 | Called only after doing all language independent checks. | |
125 | At present, this function is only called when both TYPE1 and TYPE2 are | |
126 | FUNCTION_TYPEs. */ | |
127 | bool (*type_hash_eq) (const_tree, const_tree); | |
128 | ||
1c79cc8c | 129 | /* Return TRUE if TYPE uses a hidden descriptor and fills in information |
130 | for the debugger about the array bounds, strides, etc. */ | |
131 | bool (*get_array_descr_info) (const_tree, struct array_descr_info *); | |
132 | ||
a9538d68 | 133 | /* Fill in information for the debugger about the bounds of TYPE. */ |
134 | void (*get_subrange_bounds) (const_tree, tree *, tree *); | |
135 | ||
d991e6e8 | 136 | /* If we requested a pointer to a vector, build up the pointers that |
137 | we stripped off while looking for the inner type. Similarly for | |
138 | return values from functions. The argument TYPE is the top of the | |
139 | chain, and BOTTOM is the new type which we will point to. */ | |
140 | tree (*reconstruct_complex_type) (tree, tree); | |
141 | ||
a26d3281 | 142 | /* Nonzero if types that are identical are to be hashed so that only |
143 | one copy is kept. If a language requires unique types for each | |
144 | user-specified type, such as Ada, this should be set to TRUE. */ | |
145 | bool hash_types; | |
a1f71e15 | 146 | }; |
147 | ||
20325f61 | 148 | /* Language hooks related to decls and the symbol table. */ |
149 | ||
150 | struct lang_hooks_for_decls | |
151 | { | |
6ef828f9 | 152 | /* Returns nonzero if we are in the global binding level. Ada |
20325f61 | 153 | returns -1 for an undocumented reason used in stor-layout.c. */ |
3ad4992f | 154 | int (*global_bindings_p) (void); |
20325f61 | 155 | |
20325f61 | 156 | /* Function to add a decl to the current scope level. Takes one |
157 | argument, a decl to add. Returns that decl, or, if the same | |
158 | symbol is already declared, may return a different decl for that | |
159 | name. */ | |
3ad4992f | 160 | tree (*pushdecl) (tree); |
20325f61 | 161 | |
162 | /* Returns the chain of decls so far in the current scope level. */ | |
3ad4992f | 163 | tree (*getdecls) (void); |
8d58a5a7 | 164 | |
cb3582e7 | 165 | /* Returns true if DECL is explicit member function. */ |
166 | bool (*function_decl_explicit_p) (tree); | |
167 | ||
7c48f38c | 168 | /* Returns True if the parameter is a generic parameter decl |
169 | of a generic type, e.g a template template parameter for the C++ FE. */ | |
170 | bool (*generic_generic_parameter_decl_p) (const_tree); | |
171 | ||
5d1e31fa | 172 | /* Determine if a function parameter got expanded from a |
173 | function parameter pack. */ | |
174 | bool (*function_parm_expanded_from_pack_p) (tree, tree); | |
175 | ||
176 | /* Returns the generic declaration of a generic function instantiations. */ | |
177 | tree (*get_generic_function_decl) (const_tree); | |
178 | ||
8d58a5a7 | 179 | /* Returns true when we should warn for an unused global DECL. |
180 | We will already have checked that it has static binding. */ | |
f8fd23c0 | 181 | bool (*warn_unused_global) (const_tree); |
28db4d96 | 182 | |
183 | /* Obtain a list of globals and do final output on them at end | |
184 | of compilation */ | |
3ad4992f | 185 | void (*final_write_globals) (void); |
e2e9c55b | 186 | |
187 | /* True if this decl may be called via a sibcall. */ | |
9f627b1a | 188 | bool (*ok_for_sibcall) (const_tree); |
537cd941 | 189 | |
1e8e9920 | 190 | /* True if OpenMP should privatize what this DECL points to rather |
191 | than the DECL itself. */ | |
9f627b1a | 192 | bool (*omp_privatize_by_reference) (const_tree); |
1e8e9920 | 193 | |
194 | /* Return sharing kind if OpenMP sharing attribute of DECL is | |
195 | predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */ | |
196 | enum omp_clause_default_kind (*omp_predetermined_sharing) (tree); | |
197 | ||
4ad75159 | 198 | /* Return decl that should be reported for DEFAULT(NONE) failure |
199 | diagnostics. Usually the DECL passed in. */ | |
200 | tree (*omp_report_decl) (tree); | |
201 | ||
1e8e9920 | 202 | /* Return true if DECL's DECL_VALUE_EXPR (if any) should be |
203 | disregarded in OpenMP construct, because it is going to be | |
204 | remapped during OpenMP lowering. SHARED is true if DECL | |
205 | is going to be shared, false if it is going to be privatized. */ | |
206 | bool (*omp_disregard_value_expr) (tree, bool); | |
207 | ||
208 | /* Return true if DECL that is shared iff SHARED is true should | |
209 | be put into OMP_CLAUSE_PRIVATE_DEBUG. */ | |
210 | bool (*omp_private_debug_clause) (tree, bool); | |
211 | ||
fd6481cf | 212 | /* Return true if DECL in private clause needs |
213 | OMP_CLAUSE_PRIVATE_OUTER_REF on the private clause. */ | |
214 | bool (*omp_private_outer_ref) (tree); | |
215 | ||
1e8e9920 | 216 | /* Build and return code for a default constructor for DECL in |
fd6481cf | 217 | response to CLAUSE. OUTER is corresponding outer region's |
218 | variable if needed. Return NULL if nothing to be done. */ | |
219 | tree (*omp_clause_default_ctor) (tree clause, tree decl, tree outer); | |
1e8e9920 | 220 | |
221 | /* Build and return code for a copy constructor from SRC to DST. */ | |
222 | tree (*omp_clause_copy_ctor) (tree clause, tree dst, tree src); | |
223 | ||
224 | /* Similarly, except use an assignment operator instead. */ | |
225 | tree (*omp_clause_assign_op) (tree clause, tree dst, tree src); | |
226 | ||
227 | /* Build and return code destructing DECL. Return NULL if nothing | |
228 | to be done. */ | |
229 | tree (*omp_clause_dtor) (tree clause, tree decl); | |
fd6481cf | 230 | |
231 | /* Do language specific checking on an implicitly determined clause. */ | |
232 | void (*omp_finish_clause) (tree clause); | |
20325f61 | 233 | }; |
234 | ||
7bfefa9d | 235 | /* Language hooks related to LTO serialization. */ |
236 | ||
237 | struct lang_hooks_for_lto | |
238 | { | |
239 | /* Begin a new LTO section named NAME. */ | |
240 | void (*begin_section) (const char *name); | |
241 | ||
242 | /* Write DATA of length LEN to the currently open LTO section. BLOCK is a | |
243 | pointer to the dynamically allocated memory containing DATA. The | |
244 | append_data function is responsible for freeing it when it is no longer | |
245 | needed. */ | |
246 | void (*append_data) (const void *data, size_t len, void *block); | |
247 | ||
248 | /* End the previously begun LTO section. */ | |
249 | void (*end_section) (void); | |
250 | }; | |
251 | ||
b0278d39 | 252 | /* Language-specific hooks. See langhooks-def.h for defaults. */ |
253 | ||
254 | struct lang_hooks | |
255 | { | |
d19bd1f0 | 256 | /* String identifying the front end. e.g. "GNU C++". */ |
257 | const char *name; | |
258 | ||
259 | /* sizeof (struct lang_identifier), so make_node () creates | |
260 | identifier nodes long enough for the language-specific slots. */ | |
261 | size_t identifier_size; | |
262 | ||
34e5cced | 263 | /* Remove any parts of the tree that are used only by the FE. */ |
264 | void (*free_lang_data) (tree); | |
265 | ||
ce45a448 | 266 | /* Determines the size of any language-specific tcc_constant or |
267 | tcc_exceptional nodes. Since it is called from make_node, the | |
1fa3a8f6 | 268 | only information available is the tree code. Expected to die |
ce45a448 | 269 | on unrecognized codes. */ |
3ad4992f | 270 | size_t (*tree_size) (enum tree_code); |
295e387a | 271 | |
435fb09b | 272 | /* The first callback made to the front end, for simple |
5457b645 | 273 | initialization needed before any calls to handle_option. Return |
274 | the language mask to filter the switch array with. */ | |
4838a8b6 | 275 | unsigned int (*init_options) (unsigned int argc, const char **argv); |
b0278d39 | 276 | |
f63da8d3 | 277 | /* Callback used to perform language-specific initialization for the |
278 | global diagnostic context structure. */ | |
279 | void (*initialize_diagnostics) (struct diagnostic_context *); | |
280 | ||
5457b645 | 281 | /* Handle the switch CODE, which has real type enum opt_code from |
282 | options.h. If the switch takes an argument, it is passed in ARG | |
917bbcab | 283 | which points to permanent storage. The handler is responsible for |
5457b645 | 284 | checking whether ARG is NULL, which indicates that no argument |
285 | was in fact supplied. For -f and -W switches, VALUE is 1 or 0 | |
286 | for the positive and negative forms respectively. | |
287 | ||
288 | Return 1 if the switch is valid, 0 if invalid, and -1 if it's | |
289 | valid and should not be treated as language-independent too. */ | |
1f3db819 | 290 | int (*handle_option) (size_t code, const char *arg, int value, int kind); |
5457b645 | 291 | |
76bf7746 | 292 | /* Return false to use the default complaint about a missing |
293 | argument, otherwise output a complaint and return true. */ | |
294 | bool (*missing_argument) (const char *opt, size_t code); | |
295 | ||
03bde601 | 296 | /* Called when all command line options have been parsed to allow |
297 | further processing and initialization | |
dd436eaf | 298 | |
03bde601 | 299 | Should return true to indicate that a compiler back-end is |
300 | not required, such as with the -E option. | |
3ad4992f | 301 | |
6ef828f9 | 302 | If errorcount is nonzero after this call the compiler exits |
dd436eaf | 303 | immediately and the finish hook is not called. */ |
3ad4992f | 304 | bool (*post_options) (const char **); |
03bde601 | 305 | |
306 | /* Called after post_options to initialize the front end. Return | |
307 | false to indicate that no further compilation be performed, in | |
308 | which case the finish hook is called immediately. */ | |
3ad4992f | 309 | bool (*init) (void); |
435fb09b | 310 | |
311 | /* Called at the end of compilation, as a finalizer. */ | |
3ad4992f | 312 | void (*finish) (void); |
435fb09b | 313 | |
6ef828f9 | 314 | /* Parses the entire file. The argument is nonzero to cause bison |
1c542e4c | 315 | parsers to dump debugging information during parsing. */ |
3ad4992f | 316 | void (*parse_file) (int); |
b78207a0 | 317 | |
b75409ba | 318 | /* Determines if it's ok for a function to have no noreturn attribute. */ |
319 | bool (*missing_noreturn_ok_p) (tree); | |
320 | ||
b0278d39 | 321 | /* Called to obtain the alias set to be used for an expression or type. |
322 | Returns -1 if the language does nothing special for it. */ | |
32c2fdea | 323 | alias_set_type (*get_alias_set) (tree); |
b0278d39 | 324 | |
ee23fd7b | 325 | /* Function to finish handling an incomplete decl at the end of |
326 | compilation. Default hook is does nothing. */ | |
3ad4992f | 327 | void (*finish_incomplete_decl) (tree); |
ee23fd7b | 328 | |
dbc42b78 | 329 | /* Replace the DECL_LANG_SPECIFIC data, which may be NULL, of the |
330 | DECL_NODE with a newly GC-allocated copy. */ | |
3ad4992f | 331 | void (*dup_lang_specific_decl) (tree); |
dbc42b78 | 332 | |
d1f6c8f2 | 333 | /* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of |
334 | thing that the assembler should talk about, set | |
335 | DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE. | |
336 | Otherwise, set it to the ERROR_MARK_NODE to ensure that the | |
337 | assembler does not talk about it. */ | |
3ad4992f | 338 | void (*set_decl_assembler_name) (tree); |
d1f6c8f2 | 339 | |
b7fced5e | 340 | /* The front end can add its own statistics to -fmem-report with |
341 | this hook. It should output to stderr. */ | |
3ad4992f | 342 | void (*print_statistics) (void); |
b7fced5e | 343 | |
ce45a448 | 344 | /* Called by print_tree when there is a tree of class tcc_exceptional |
345 | that it doesn't know how to display. */ | |
b7fced5e | 346 | lang_print_tree_hook print_xnode; |
347 | ||
ce45a448 | 348 | /* Called to print language-dependent parts of tcc_decl, tcc_type, |
349 | and IDENTIFIER_NODE nodes. */ | |
b7fced5e | 350 | lang_print_tree_hook print_decl; |
351 | lang_print_tree_hook print_type; | |
352 | lang_print_tree_hook print_identifier; | |
353 | ||
96554925 | 354 | /* Computes the name to use to print a declaration. DECL is the |
355 | non-NULL declaration in question. VERBOSITY determines what | |
356 | information will be printed: 0: DECL_NAME, demangled as | |
357 | necessary. 1: and scope information. 2: and any other | |
358 | information that might be interesting, such as function parameter | |
abd3e6b5 | 359 | types in C++. The name is in the internal character set and |
360 | needs to be converted to the locale character set of diagnostics, | |
361 | or to the execution character set for strings such as | |
362 | __PRETTY_FUNCTION__. */ | |
3ad4992f | 363 | const char *(*decl_printable_name) (tree decl, int verbosity); |
96554925 | 364 | |
7d709201 | 365 | /* Computes the dwarf-2/3 name for a tree. VERBOSITY determines what |
366 | information will be printed: 0: DECL_NAME, demangled as | |
367 | necessary. 1: and scope information. */ | |
368 | const char *(*dwarf_name) (tree, int verbosity); | |
369 | ||
4ee9c684 | 370 | /* This compares two types for equivalence ("compatible" in C-based languages). |
371 | This routine should only return 1 if it is sure. It should not be used | |
372 | in contexts where erroneously returning 0 causes problems. */ | |
373 | int (*types_compatible_p) (tree x, tree y); | |
374 | ||
6c7ff025 | 375 | /* Called by report_error_function to print out function name. */ |
b8c23db3 | 376 | void (*print_error_function) (struct diagnostic_context *, const char *, |
377 | struct diagnostic_info *); | |
6c7ff025 | 378 | |
624d37a6 | 379 | /* Convert a character from the host's to the target's character |
380 | set. The character should be in what C calls the "basic source | |
381 | character set" (roughly, the set of characters defined by plain | |
382 | old ASCII). The default is to return the character unchanged, | |
383 | which is correct in most circumstances. Note that both argument | |
384 | and result should be sign-extended under -fsigned-char, | |
385 | zero-extended under -fno-signed-char. */ | |
386 | HOST_WIDE_INT (*to_target_charset) (HOST_WIDE_INT); | |
387 | ||
f8e93a2e | 388 | /* Pointers to machine-independent attribute tables, for front ends |
389 | using attribs.c. If one is NULL, it is ignored. Respectively, a | |
390 | table of attributes specific to the language, a table of | |
391 | attributes common to two or more languages (to allow easy | |
392 | sharing), and a table of attributes for checking formats. */ | |
393 | const struct attribute_spec *attribute_table; | |
394 | const struct attribute_spec *common_attribute_table; | |
395 | const struct attribute_spec *format_attribute_table; | |
396 | ||
b0278d39 | 397 | struct lang_hooks_for_tree_inlining tree_inlining; |
8851e806 | 398 | |
833eb724 | 399 | struct lang_hooks_for_callgraph callgraph; |
400 | ||
3119c950 | 401 | struct lang_hooks_for_tree_dump tree_dump; |
b0278d39 | 402 | |
20325f61 | 403 | struct lang_hooks_for_decls decls; |
404 | ||
a1f71e15 | 405 | struct lang_hooks_for_types types; |
406 | ||
7bfefa9d | 407 | struct lang_hooks_for_lto lto; |
408 | ||
5d1e31fa | 409 | /* Returns the generic parameters of an instantiation of |
7c48f38c | 410 | a generic type or decl, e.g. C++ template instantiation. */ |
411 | tree (*get_innermost_generic_parms) (const_tree); | |
412 | ||
413 | /* Returns the TREE_VEC of arguments of an instantiation | |
414 | of a generic type of decl, e.g. C++ template instantiation. */ | |
415 | tree (*get_innermost_generic_args) (const_tree); | |
416 | ||
5d1e31fa | 417 | /* Determine if a tree is a function parameter pack. */ |
418 | bool (*function_parameter_pack_p) (const_tree); | |
419 | ||
4ee9c684 | 420 | /* Perform language-specific gimplification on the argument. Returns an |
421 | enum gimplify_status, though we can't see that type here. */ | |
75a70cf9 | 422 | int (*gimplify_expr) (tree *, gimple_seq *, gimple_seq *); |
4ee9c684 | 423 | |
54be5d7e | 424 | /* Do language specific processing in the builtin function DECL */ |
425 | tree (*builtin_function) (tree decl); | |
e60d3615 | 426 | |
24470055 | 427 | /* Like builtin_function, but make sure the scope is the external scope. |
428 | This is used to delay putting in back end builtin functions until the ISA | |
429 | that defines the builtin is declared via function specific target options, | |
430 | which can save memory for machines like the x86_64 that have multiple | |
431 | ISAs. If this points to the same function as builtin_function, the | |
432 | backend must add all of the builtins at program initialization time. */ | |
433 | tree (*builtin_function_ext_scope) (tree decl); | |
434 | ||
5ded8c6f | 435 | /* Used to set up the tree_contains_structure array for a frontend. */ |
436 | void (*init_ts) (void); | |
437 | ||
750ad201 | 438 | /* Called by recompute_tree_invariant_for_addr_expr to go from EXPR |
c7d4e749 | 439 | to a contained expression or DECL, possibly updating *TC or *SE |
440 | if in the process TREE_CONSTANT or TREE_SIDE_EFFECTS need updating. */ | |
441 | tree (*expr_to_decl) (tree expr, bool *tc, bool *se); | |
54d7165a | 442 | |
58d82cd0 | 443 | /* The EH personality function decl. */ |
444 | tree (*eh_personality) (void); | |
445 | ||
446 | /* Map a type to a runtime object to match type. */ | |
447 | tree (*eh_runtime_type) (tree); | |
448 | ||
596981c8 | 449 | /* If non-NULL, this is a function that returns a function decl to be |
450 | executed if an unhandled exception is propagated out of a cleanup | |
451 | region. For example, in C++, an exception thrown by a destructor | |
452 | during stack unwinding is required to result in a call to | |
453 | `std::terminate', so the C++ version of this function returns a | |
454 | FUNCTION_DECL for `std::terminate'. */ | |
455 | tree (*eh_protect_cleanup_actions) (void); | |
456 | ||
471eff36 | 457 | /* True if this language uses __cxa_end_cleanup when the ARM EABI |
458 | is enabled. */ | |
459 | bool eh_use_cxa_end_cleanup; | |
460 | ||
f96dd706 | 461 | /* True if this language requires deep unsharing of tree nodes prior to |
462 | gimplification. */ | |
463 | bool deep_unsharing; | |
464 | ||
3119c950 | 465 | /* Whenever you add entries here, make sure you adjust langhooks-def.h |
b0278d39 | 466 | and langhooks.c accordingly. */ |
467 | }; | |
468 | ||
469 | /* Each front end provides its own. */ | |
34e5cced | 470 | extern struct lang_hooks lang_hooks; |
54be5d7e | 471 | extern tree add_builtin_function (const char *name, tree type, |
472 | int function_code, enum built_in_class cl, | |
473 | const char *library_name, | |
474 | tree attrs); | |
e8602e56 | 475 | |
24470055 | 476 | extern tree add_builtin_function_ext_scope (const char *name, tree type, |
477 | int function_code, | |
478 | enum built_in_class cl, | |
479 | const char *library_name, | |
480 | tree attrs); | |
481 | ||
e8602e56 | 482 | #endif /* GCC_LANG_HOOKS_H */ |