Mercurial > hg > CbC > CbC_gcc
annotate gcc/langhooks.h @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* The lang_hooks data structure. |
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2 Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC 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 3, or (at your option) | |
| 10 any later version. | |
| 11 | |
| 12 GCC 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 GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 #ifndef GCC_LANG_HOOKS_H | |
| 22 #define GCC_LANG_HOOKS_H | |
| 23 | |
| 24 /* This file should be #include-d after tree.h. */ | |
| 25 | |
| 26 struct diagnostic_info; | |
| 27 | |
| 28 struct gimplify_omp_ctx; | |
| 29 | |
| 30 struct array_descr_info; | |
| 31 | |
| 32 /* A print hook for print_tree (). */ | |
| 33 typedef void (*lang_print_tree_hook) (FILE *, tree, int indent); | |
| 34 | |
| 35 enum classify_record | |
| 36 { RECORD_IS_STRUCT, RECORD_IS_CLASS, RECORD_IS_INTERFACE }; | |
| 37 | |
| 38 /* The following hooks are documented in langhooks.c. Must not be | |
| 39 NULL. */ | |
| 40 | |
| 41 struct lang_hooks_for_tree_inlining | |
| 42 { | |
| 43 bool (*var_mod_type_p) (tree, tree); | |
| 44 }; | |
| 45 | |
| 46 struct lang_hooks_for_callgraph | |
| 47 { | |
| 48 /* The node passed is a language-specific tree node. If its contents | |
| 49 are relevant to use of other declarations, mark them. */ | |
| 50 tree (*analyze_expr) (tree *, int *); | |
| 51 }; | |
| 52 | |
| 53 /* The following hooks are used by tree-dump.c. */ | |
| 54 | |
| 55 struct lang_hooks_for_tree_dump | |
| 56 { | |
| 57 /* Dump language-specific parts of tree nodes. Returns nonzero if it | |
| 58 does not want the usual dumping of the second argument. */ | |
| 59 bool (*dump_tree) (void *, tree); | |
| 60 | |
| 61 /* Determine type qualifiers in a language-specific way. */ | |
| 62 int (*type_quals) (const_tree); | |
| 63 }; | |
| 64 | |
| 65 /* Hooks related to types. */ | |
| 66 | |
| 67 struct lang_hooks_for_types | |
| 68 { | |
| 69 /* Return a new type (with the indicated CODE), doing whatever | |
| 70 language-specific processing is required. */ | |
| 71 tree (*make_type) (enum tree_code); | |
| 72 | |
| 73 /* Return what kind of RECORD_TYPE this is, mainly for purposes of | |
| 74 debug information. If not defined, record types are assumed to | |
| 75 be structures. */ | |
| 76 enum classify_record (*classify_record) (tree); | |
| 77 | |
| 78 /* Given MODE and UNSIGNEDP, return a suitable type-tree with that | |
| 79 mode. */ | |
| 80 tree (*type_for_mode) (enum machine_mode, int); | |
| 81 | |
| 82 /* Given PRECISION and UNSIGNEDP, return a suitable type-tree for an | |
| 83 integer type with at least that precision. */ | |
| 84 tree (*type_for_size) (unsigned, int); | |
| 85 | |
| 86 /* True if the type is an instantiation of a generic type, | |
| 87 e.g. C++ template implicit specializations. */ | |
| 88 bool (*generic_p) (const_tree); | |
| 89 | |
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90 /* Returns the TREE_VEC of elements of a given generic argument pack. */ |
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91 tree (*get_argument_pack_elems) (const_tree); |
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92 |
| 0 | 93 /* Given a type, apply default promotions to unnamed function |
| 94 arguments and return the new type. Return the same type if no | |
| 95 change. Required by any language that supports variadic | |
| 96 arguments. The default hook dies. */ | |
| 97 tree (*type_promotes_to) (tree); | |
| 98 | |
| 99 /* Register TYPE as a builtin type with the indicated NAME. The | |
| 100 TYPE is placed in the outermost lexical scope. The semantics | |
| 101 should be analogous to: | |
| 102 | |
| 103 typedef TYPE NAME; | |
| 104 | |
| 105 in C. The default hook ignores the declaration. */ | |
| 106 void (*register_builtin_type) (tree, const char *); | |
| 107 | |
| 108 /* This routine is called in tree.c to print an error message for | |
| 109 invalid use of an incomplete type. VALUE is the expression that | |
| 110 was used (or 0 if that isn't known) and TYPE is the type that was | |
| 111 invalid. */ | |
| 112 void (*incomplete_type_error) (const_tree value, const_tree type); | |
| 113 | |
| 114 /* Called from assign_temp to return the maximum size, if there is one, | |
| 115 for a type. */ | |
| 116 tree (*max_size) (const_tree); | |
| 117 | |
| 118 /* Register language specific type size variables as potentially OpenMP | |
| 119 firstprivate variables. */ | |
| 120 void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree); | |
| 121 | |
| 122 /* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes. | |
| 123 Called only after doing all language independent checks. | |
| 124 At present, this function is only called when both TYPE1 and TYPE2 are | |
| 125 FUNCTION_TYPEs. */ | |
| 126 bool (*type_hash_eq) (const_tree, const_tree); | |
| 127 | |
| 128 /* Return TRUE if TYPE uses a hidden descriptor and fills in information | |
| 129 for the debugger about the array bounds, strides, etc. */ | |
| 130 bool (*get_array_descr_info) (const_tree, struct array_descr_info *); | |
| 131 | |
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132 /* Fill in information for the debugger about the bounds of TYPE. */ |
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133 void (*get_subrange_bounds) (const_tree, tree *, tree *); |
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134 |
| 0 | 135 /* If we requested a pointer to a vector, build up the pointers that |
| 136 we stripped off while looking for the inner type. Similarly for | |
| 137 return values from functions. The argument TYPE is the top of the | |
| 138 chain, and BOTTOM is the new type which we will point to. */ | |
| 139 tree (*reconstruct_complex_type) (tree, tree); | |
| 140 }; | |
| 141 | |
| 142 /* Language hooks related to decls and the symbol table. */ | |
| 143 | |
| 144 struct lang_hooks_for_decls | |
| 145 { | |
| 146 /* Returns nonzero if we are in the global binding level. Ada | |
| 147 returns -1 for an undocumented reason used in stor-layout.c. */ | |
| 148 int (*global_bindings_p) (void); | |
| 149 | |
| 150 /* Function to add a decl to the current scope level. Takes one | |
| 151 argument, a decl to add. Returns that decl, or, if the same | |
| 152 symbol is already declared, may return a different decl for that | |
| 153 name. */ | |
| 154 tree (*pushdecl) (tree); | |
| 155 | |
| 156 /* Returns the chain of decls so far in the current scope level. */ | |
| 157 tree (*getdecls) (void); | |
| 158 | |
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159 /* Returns true if DECL is explicit member function. */ |
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160 bool (*function_decl_explicit_p) (tree); |
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161 |
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162 /* Returns True if the parameter is a generic parameter decl |
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163 of a generic type, e.g a template template parameter for the C++ FE. */ |
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164 bool (*generic_generic_parameter_decl_p) (const_tree); |
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165 |
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166 /* Determine if a function parameter got expanded from a |
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167 function parameter pack. */ |
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168 bool (*function_parm_expanded_from_pack_p) (tree, tree); |
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169 |
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170 /* Returns the generic declaration of a generic function instantiations. */ |
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171 tree (*get_generic_function_decl) (const_tree); |
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172 |
| 0 | 173 /* Returns true when we should warn for an unused global DECL. |
| 174 We will already have checked that it has static binding. */ | |
| 175 bool (*warn_unused_global) (const_tree); | |
| 176 | |
| 177 /* Obtain a list of globals and do final output on them at end | |
| 178 of compilation */ | |
| 179 void (*final_write_globals) (void); | |
| 180 | |
| 181 /* True if this decl may be called via a sibcall. */ | |
| 182 bool (*ok_for_sibcall) (const_tree); | |
| 183 | |
| 184 /* True if OpenMP should privatize what this DECL points to rather | |
| 185 than the DECL itself. */ | |
| 186 bool (*omp_privatize_by_reference) (const_tree); | |
| 187 | |
| 188 /* Return sharing kind if OpenMP sharing attribute of DECL is | |
| 189 predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */ | |
| 190 enum omp_clause_default_kind (*omp_predetermined_sharing) (tree); | |
| 191 | |
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192 /* Return decl that should be reported for DEFAULT(NONE) failure |
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193 diagnostics. Usually the DECL passed in. */ |
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194 tree (*omp_report_decl) (tree); |
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195 |
| 0 | 196 /* Return true if DECL's DECL_VALUE_EXPR (if any) should be |
| 197 disregarded in OpenMP construct, because it is going to be | |
| 198 remapped during OpenMP lowering. SHARED is true if DECL | |
| 199 is going to be shared, false if it is going to be privatized. */ | |
| 200 bool (*omp_disregard_value_expr) (tree, bool); | |
| 201 | |
| 202 /* Return true if DECL that is shared iff SHARED is true should | |
| 203 be put into OMP_CLAUSE_PRIVATE_DEBUG. */ | |
| 204 bool (*omp_private_debug_clause) (tree, bool); | |
| 205 | |
| 206 /* Return true if DECL in private clause needs | |
| 207 OMP_CLAUSE_PRIVATE_OUTER_REF on the private clause. */ | |
| 208 bool (*omp_private_outer_ref) (tree); | |
| 209 | |
| 210 /* Build and return code for a default constructor for DECL in | |
| 211 response to CLAUSE. OUTER is corresponding outer region's | |
| 212 variable if needed. Return NULL if nothing to be done. */ | |
| 213 tree (*omp_clause_default_ctor) (tree clause, tree decl, tree outer); | |
| 214 | |
| 215 /* Build and return code for a copy constructor from SRC to DST. */ | |
| 216 tree (*omp_clause_copy_ctor) (tree clause, tree dst, tree src); | |
| 217 | |
| 218 /* Similarly, except use an assignment operator instead. */ | |
| 219 tree (*omp_clause_assign_op) (tree clause, tree dst, tree src); | |
| 220 | |
| 221 /* Build and return code destructing DECL. Return NULL if nothing | |
| 222 to be done. */ | |
| 223 tree (*omp_clause_dtor) (tree clause, tree decl); | |
| 224 | |
| 225 /* Do language specific checking on an implicitly determined clause. */ | |
| 226 void (*omp_finish_clause) (tree clause); | |
| 227 }; | |
| 228 | |
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229 /* Language hooks related to LTO serialization. */ |
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230 |
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231 struct lang_hooks_for_lto |
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232 { |
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233 /* Begin a new LTO section named NAME. */ |
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234 void (*begin_section) (const char *name); |
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235 |
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236 /* Write DATA of length LEN to the currently open LTO section. BLOCK is a |
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237 pointer to the dynamically allocated memory containing DATA. The |
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238 append_data function is responsible for freeing it when it is no longer |
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239 needed. */ |
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240 void (*append_data) (const void *data, size_t len, void *block); |
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241 |
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242 /* End the previously begun LTO section. */ |
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243 void (*end_section) (void); |
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244 }; |
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245 |
| 0 | 246 /* Language-specific hooks. See langhooks-def.h for defaults. */ |
| 247 | |
| 248 struct lang_hooks | |
| 249 { | |
| 250 /* String identifying the front end. e.g. "GNU C++". */ | |
| 251 const char *name; | |
| 252 | |
| 253 /* sizeof (struct lang_identifier), so make_node () creates | |
| 254 identifier nodes long enough for the language-specific slots. */ | |
| 255 size_t identifier_size; | |
| 256 | |
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257 /* Remove any parts of the tree that are used only by the FE. */ |
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258 void (*free_lang_data) (tree); |
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259 |
| 0 | 260 /* Determines the size of any language-specific tcc_constant or |
| 261 tcc_exceptional nodes. Since it is called from make_node, the | |
| 262 only information available is the tree code. Expected to die | |
| 263 on unrecognized codes. */ | |
| 264 size_t (*tree_size) (enum tree_code); | |
| 265 | |
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266 /* Return the language mask used for converting argv into a sequence |
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267 of options. */ |
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268 unsigned int (*option_lang_mask) (void); |
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269 |
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270 /* Initialize variables in an options structure. */ |
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271 void (*init_options_struct) (struct gcc_options *opts); |
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272 |
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273 /* After the initialize_diagnostics hook is called, do any simple |
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274 initialization needed before any calls to handle_option, other |
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275 than that done by the init_options_struct hook. */ |
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276 void (*init_options) (unsigned int decoded_options_count, |
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277 struct cl_decoded_option *decoded_options); |
| 0 | 278 |
| 279 /* Callback used to perform language-specific initialization for the | |
| 280 global diagnostic context structure. */ | |
|
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281 void (*initialize_diagnostics) (diagnostic_context *); |
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282 |
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283 /* Return true if a warning should be given about option OPTION, |
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284 which is for the wrong language, false if it should be quietly |
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285 ignored. */ |
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286 bool (*complain_wrong_lang_p) (const struct cl_option *option); |
| 0 | 287 |
| 288 /* Handle the switch CODE, which has real type enum opt_code from | |
| 289 options.h. If the switch takes an argument, it is passed in ARG | |
| 290 which points to permanent storage. The handler is responsible for | |
| 291 checking whether ARG is NULL, which indicates that no argument | |
| 292 was in fact supplied. For -f and -W switches, VALUE is 1 or 0 | |
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293 for the positive and negative forms respectively. HANDLERS should |
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294 be passed to any recursive handle_option calls. LOC is the |
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295 location of the option. |
| 0 | 296 |
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297 Return true if the switch is valid, false if invalid. */ |
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298 bool (*handle_option) (size_t code, const char *arg, int value, int kind, |
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299 location_t loc, |
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300 const struct cl_option_handlers *handlers); |
| 0 | 301 |
| 302 /* Called when all command line options have been parsed to allow | |
| 303 further processing and initialization | |
| 304 | |
| 305 Should return true to indicate that a compiler back-end is | |
| 306 not required, such as with the -E option. | |
| 307 | |
| 308 If errorcount is nonzero after this call the compiler exits | |
| 309 immediately and the finish hook is not called. */ | |
| 310 bool (*post_options) (const char **); | |
| 311 | |
| 312 /* Called after post_options to initialize the front end. Return | |
| 313 false to indicate that no further compilation be performed, in | |
| 314 which case the finish hook is called immediately. */ | |
| 315 bool (*init) (void); | |
| 316 | |
| 317 /* Called at the end of compilation, as a finalizer. */ | |
| 318 void (*finish) (void); | |
| 319 | |
|
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320 /* Parses the entire file. */ |
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321 void (*parse_file) (void); |
| 0 | 322 |
| 323 /* Determines if it's ok for a function to have no noreturn attribute. */ | |
| 324 bool (*missing_noreturn_ok_p) (tree); | |
| 325 | |
| 326 /* Called to obtain the alias set to be used for an expression or type. | |
| 327 Returns -1 if the language does nothing special for it. */ | |
| 328 alias_set_type (*get_alias_set) (tree); | |
| 329 | |
| 330 /* Function to finish handling an incomplete decl at the end of | |
| 331 compilation. Default hook is does nothing. */ | |
| 332 void (*finish_incomplete_decl) (tree); | |
| 333 | |
| 334 /* Replace the DECL_LANG_SPECIFIC data, which may be NULL, of the | |
| 335 DECL_NODE with a newly GC-allocated copy. */ | |
| 336 void (*dup_lang_specific_decl) (tree); | |
| 337 | |
| 338 /* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of | |
| 339 thing that the assembler should talk about, set | |
| 340 DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE. | |
| 341 Otherwise, set it to the ERROR_MARK_NODE to ensure that the | |
| 342 assembler does not talk about it. */ | |
| 343 void (*set_decl_assembler_name) (tree); | |
| 344 | |
| 345 /* The front end can add its own statistics to -fmem-report with | |
| 346 this hook. It should output to stderr. */ | |
| 347 void (*print_statistics) (void); | |
| 348 | |
| 349 /* Called by print_tree when there is a tree of class tcc_exceptional | |
| 350 that it doesn't know how to display. */ | |
| 351 lang_print_tree_hook print_xnode; | |
| 352 | |
| 353 /* Called to print language-dependent parts of tcc_decl, tcc_type, | |
| 354 and IDENTIFIER_NODE nodes. */ | |
| 355 lang_print_tree_hook print_decl; | |
| 356 lang_print_tree_hook print_type; | |
| 357 lang_print_tree_hook print_identifier; | |
| 358 | |
| 359 /* Computes the name to use to print a declaration. DECL is the | |
| 360 non-NULL declaration in question. VERBOSITY determines what | |
| 361 information will be printed: 0: DECL_NAME, demangled as | |
| 362 necessary. 1: and scope information. 2: and any other | |
| 363 information that might be interesting, such as function parameter | |
|
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364 types in C++. The name is in the internal character set and |
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365 needs to be converted to the locale character set of diagnostics, |
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366 or to the execution character set for strings such as |
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367 __PRETTY_FUNCTION__. */ |
| 0 | 368 const char *(*decl_printable_name) (tree decl, int verbosity); |
| 369 | |
| 370 /* Computes the dwarf-2/3 name for a tree. VERBOSITY determines what | |
| 371 information will be printed: 0: DECL_NAME, demangled as | |
| 372 necessary. 1: and scope information. */ | |
| 373 const char *(*dwarf_name) (tree, int verbosity); | |
| 374 | |
| 375 /* This compares two types for equivalence ("compatible" in C-based languages). | |
| 376 This routine should only return 1 if it is sure. It should not be used | |
| 377 in contexts where erroneously returning 0 causes problems. */ | |
| 378 int (*types_compatible_p) (tree x, tree y); | |
| 379 | |
| 380 /* Called by report_error_function to print out function name. */ | |
|
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381 void (*print_error_function) (diagnostic_context *, const char *, |
| 0 | 382 struct diagnostic_info *); |
| 383 | |
| 384 /* Convert a character from the host's to the target's character | |
| 385 set. The character should be in what C calls the "basic source | |
| 386 character set" (roughly, the set of characters defined by plain | |
| 387 old ASCII). The default is to return the character unchanged, | |
| 388 which is correct in most circumstances. Note that both argument | |
| 389 and result should be sign-extended under -fsigned-char, | |
| 390 zero-extended under -fno-signed-char. */ | |
| 391 HOST_WIDE_INT (*to_target_charset) (HOST_WIDE_INT); | |
| 392 | |
| 393 /* Pointers to machine-independent attribute tables, for front ends | |
| 394 using attribs.c. If one is NULL, it is ignored. Respectively, a | |
| 395 table of attributes specific to the language, a table of | |
| 396 attributes common to two or more languages (to allow easy | |
| 397 sharing), and a table of attributes for checking formats. */ | |
| 398 const struct attribute_spec *attribute_table; | |
| 399 const struct attribute_spec *common_attribute_table; | |
| 400 const struct attribute_spec *format_attribute_table; | |
| 401 | |
| 402 struct lang_hooks_for_tree_inlining tree_inlining; | |
| 403 | |
| 404 struct lang_hooks_for_callgraph callgraph; | |
| 405 | |
| 406 struct lang_hooks_for_tree_dump tree_dump; | |
| 407 | |
| 408 struct lang_hooks_for_decls decls; | |
| 409 | |
| 410 struct lang_hooks_for_types types; | |
| 411 | |
|
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412 struct lang_hooks_for_lto lto; |
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413 |
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414 /* Returns the generic parameters of an instantiation of |
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415 a generic type or decl, e.g. C++ template instantiation. */ |
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416 tree (*get_innermost_generic_parms) (const_tree); |
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417 |
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418 /* Returns the TREE_VEC of arguments of an instantiation |
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419 of a generic type of decl, e.g. C++ template instantiation. */ |
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420 tree (*get_innermost_generic_args) (const_tree); |
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421 |
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422 /* Determine if a tree is a function parameter pack. */ |
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423 bool (*function_parameter_pack_p) (const_tree); |
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424 |
| 0 | 425 /* Perform language-specific gimplification on the argument. Returns an |
| 426 enum gimplify_status, though we can't see that type here. */ | |
| 427 int (*gimplify_expr) (tree *, gimple_seq *, gimple_seq *); | |
| 428 | |
| 429 /* Do language specific processing in the builtin function DECL */ | |
| 430 tree (*builtin_function) (tree decl); | |
| 431 | |
| 432 /* Like builtin_function, but make sure the scope is the external scope. | |
| 433 This is used to delay putting in back end builtin functions until the ISA | |
| 434 that defines the builtin is declared via function specific target options, | |
| 435 which can save memory for machines like the x86_64 that have multiple | |
| 436 ISAs. If this points to the same function as builtin_function, the | |
| 437 backend must add all of the builtins at program initialization time. */ | |
| 438 tree (*builtin_function_ext_scope) (tree decl); | |
| 439 | |
| 440 /* Used to set up the tree_contains_structure array for a frontend. */ | |
| 441 void (*init_ts) (void); | |
| 442 | |
| 443 /* Called by recompute_tree_invariant_for_addr_expr to go from EXPR | |
| 444 to a contained expression or DECL, possibly updating *TC or *SE | |
| 445 if in the process TREE_CONSTANT or TREE_SIDE_EFFECTS need updating. */ | |
| 446 tree (*expr_to_decl) (tree expr, bool *tc, bool *se); | |
| 447 | |
|
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448 /* The EH personality function decl. */ |
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449 tree (*eh_personality) (void); |
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450 |
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451 /* Map a type to a runtime object to match type. */ |
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452 tree (*eh_runtime_type) (tree); |
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453 |
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454 /* If non-NULL, this is a function that returns a function decl to be |
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455 executed if an unhandled exception is propagated out of a cleanup |
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456 region. For example, in C++, an exception thrown by a destructor |
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457 during stack unwinding is required to result in a call to |
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458 `std::terminate', so the C++ version of this function returns a |
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459 FUNCTION_DECL for `std::terminate'. */ |
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460 tree (*eh_protect_cleanup_actions) (void); |
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461 |
|
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462 /* True if this language uses __cxa_end_cleanup when the ARM EABI |
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463 is enabled. */ |
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464 bool eh_use_cxa_end_cleanup; |
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465 |
|
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466 /* True if this language requires deep unsharing of tree nodes prior to |
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467 gimplification. */ |
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468 bool deep_unsharing; |
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469 |
| 0 | 470 /* Whenever you add entries here, make sure you adjust langhooks-def.h |
| 471 and langhooks.c accordingly. */ | |
| 472 }; | |
| 473 | |
| 474 /* Each front end provides its own. */ | |
|
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475 extern struct lang_hooks lang_hooks; |
| 0 | 476 extern tree add_builtin_function (const char *name, tree type, |
| 477 int function_code, enum built_in_class cl, | |
| 478 const char *library_name, | |
| 479 tree attrs); | |
| 480 | |
| 481 extern tree add_builtin_function_ext_scope (const char *name, tree type, | |
| 482 int function_code, | |
| 483 enum built_in_class cl, | |
| 484 const char *library_name, | |
| 485 tree attrs); | |
| 486 | |
| 487 #endif /* GCC_LANG_HOOKS_H */ |