1 /* GCC core type declarations. 2 Copyright (C) 2002-2018 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 /* Provide forward declarations of core types which are referred to by 26 most of the compiler. This allows header files to use these types 27 (e.g. in function prototypes) without concern for whether the full 28 definitions are visible. Some other declarations that need to be 29 universally visible are here, too. 30 31 In the context of tconfig.h, most of these have special definitions 32 which prevent them from being used except in further type 33 declarations. This is a kludge; the right thing is to avoid 34 including the "tm.h" header set in the context of tconfig.h, but 35 we're not there yet. */ 36 37 #ifndef GCC_CORETYPES_H 38 #define GCC_CORETYPES_H 39 40 #ifndef GTY 41 #define GTY(x) /* nothing - marker for gengtype */ 42 #endif 43 44 #ifndef USED_FOR_TARGET 45 46 typedef int64_t gcov_type; 47 typedef uint64_t gcov_type_unsigned; 48 49 struct bitmap_head; 50 typedef struct bitmap_head *bitmap; 51 typedef const struct bitmap_head *const_bitmap; 52 struct simple_bitmap_def; 53 typedef struct simple_bitmap_def *sbitmap; 54 typedef const struct simple_bitmap_def *const_sbitmap; 55 struct rtx_def; 56 typedef struct rtx_def *rtx; 57 typedef const struct rtx_def *const_rtx; 58 class scalar_mode; 59 class scalar_int_mode; 60 class scalar_float_mode; 61 class complex_mode; 62 class fixed_size_mode; 63 template<typename> class opt_mode; 64 typedef opt_mode<scalar_mode> opt_scalar_mode; 65 typedef opt_mode<scalar_int_mode> opt_scalar_int_mode; 66 typedef opt_mode<scalar_float_mode> opt_scalar_float_mode; 67 template<typename> class pod_mode; 68 typedef pod_mode<scalar_mode> scalar_mode_pod; 69 typedef pod_mode<scalar_int_mode> scalar_int_mode_pod; 70 typedef pod_mode<fixed_size_mode> fixed_size_mode_pod; 71 72 /* Subclasses of rtx_def, using indentation to show the class 73 hierarchy, along with the relevant invariant. 74 Where possible, keep this list in the same order as in rtl.def. */ 75 class rtx_def; 76 class rtx_expr_list; /* GET_CODE (X) == EXPR_LIST */ 77 class rtx_insn_list; /* GET_CODE (X) == INSN_LIST */ 78 class rtx_sequence; /* GET_CODE (X) == SEQUENCE */ 79 class rtx_insn; 80 class rtx_debug_insn; /* DEBUG_INSN_P (X) */ 81 class rtx_nonjump_insn; /* NONJUMP_INSN_P (X) */ 82 class rtx_jump_insn; /* JUMP_P (X) */ 83 class rtx_call_insn; /* CALL_P (X) */ 84 class rtx_jump_table_data; /* JUMP_TABLE_DATA_P (X) */ 85 class rtx_barrier; /* BARRIER_P (X) */ 86 class rtx_code_label; /* LABEL_P (X) */ 87 class rtx_note; /* NOTE_P (X) */ 88 89 struct rtvec_def; 90 typedef struct rtvec_def *rtvec; 91 typedef const struct rtvec_def *const_rtvec; 92 struct hwivec_def; 93 typedef struct hwivec_def *hwivec; 94 typedef const struct hwivec_def *const_hwivec; 95 union tree_node; 96 typedef union tree_node *tree; 97 typedef const union tree_node *const_tree; 98 struct gimple; 99 typedef gimple *gimple_seq; 100 struct gimple_stmt_iterator; 101 102 /* Forward decls for leaf gimple subclasses (for individual gimple codes). 103 Keep this in the same order as the corresponding codes in gimple.def. */ 104 105 struct gcond; 106 struct gdebug; 107 struct ggoto; 108 struct glabel; 109 struct gswitch; 110 struct gassign; 111 struct gasm; 112 struct gcall; 113 struct gtransaction; 114 struct greturn; 115 struct gbind; 116 struct gcatch; 117 struct geh_filter; 118 struct geh_mnt; 119 struct geh_else; 120 struct gresx; 121 struct geh_dispatch; 122 struct gphi; 123 struct gtry; 124 struct gomp_atomic_load; 125 struct gomp_atomic_store; 126 struct gomp_continue; 127 struct gomp_critical; 128 struct gomp_ordered; 129 struct gomp_for; 130 struct gomp_parallel; 131 struct gomp_task; 132 struct gomp_sections; 133 struct gomp_single; 134 struct gomp_target; 135 struct gomp_teams; 136 137 union section; 138 typedef union section section; 139 struct gcc_options; 140 struct cl_target_option; 141 struct cl_optimization; 142 struct cl_option; 143 struct cl_decoded_option; 144 struct cl_option_handlers; 145 struct diagnostic_context; 146 struct pretty_printer; 147 148 /* Address space number for named address space support. */ 149 typedef unsigned char addr_space_t; 150 151 /* The value of addr_space_t that represents the generic address space. */ 152 #define ADDR_SPACE_GENERIC 0 153 #define ADDR_SPACE_GENERIC_P(AS) ((AS) == ADDR_SPACE_GENERIC) 154 155 /* The major intermediate representations of GCC. */ 156 enum ir_type { 157 IR_GIMPLE, 158 IR_RTL_CFGRTL, 159 IR_RTL_CFGLAYOUT 160 }; 161 162 /* Provide forward struct declaration so that we don't have to include 163 all of cpplib.h whenever a random prototype includes a pointer. 164 Note that the cpp_reader and cpp_token typedefs remain part of 165 cpplib.h. */ 166 167 struct cpp_reader; 168 struct cpp_token; 169 170 /* The thread-local storage model associated with a given VAR_DECL 171 or SYMBOL_REF. This isn't used much, but both trees and RTL refer 172 to it, so it's here. */ 173 enum tls_model { 174 TLS_MODEL_NONE, 175 TLS_MODEL_EMULATED, 176 TLS_MODEL_REAL, 177 TLS_MODEL_GLOBAL_DYNAMIC = TLS_MODEL_REAL, 178 TLS_MODEL_LOCAL_DYNAMIC, 179 TLS_MODEL_INITIAL_EXEC, 180 TLS_MODEL_LOCAL_EXEC 181 }; 182 183 /* Types of ABI for an offload compiler. */ 184 enum offload_abi { 185 OFFLOAD_ABI_UNSET, 186 OFFLOAD_ABI_LP64, 187 OFFLOAD_ABI_ILP32 188 }; 189 190 /* Types of profile update methods. */ 191 enum profile_update { 192 PROFILE_UPDATE_SINGLE, 193 PROFILE_UPDATE_ATOMIC, 194 PROFILE_UPDATE_PREFER_ATOMIC 195 }; 196 197 /* Types of unwind/exception handling info that can be generated. */ 198 199 enum unwind_info_type 200 { 201 UI_NONE, 202 UI_SJLJ, 203 UI_DWARF2, 204 UI_TARGET, 205 UI_SEH 206 }; 207 208 /* Callgraph node profile representation. */ 209 enum node_frequency { 210 /* This function most likely won't be executed at all. 211 (set only when profile feedback is available or via function attribute). */ 212 NODE_FREQUENCY_UNLIKELY_EXECUTED, 213 /* For functions that are known to be executed once (i.e. constructors, destructors 214 and main function. */ 215 NODE_FREQUENCY_EXECUTED_ONCE, 216 /* The default value. */ 217 NODE_FREQUENCY_NORMAL, 218 /* Optimize this function hard 219 (set only when profile feedback is available or via function attribute). */ 220 NODE_FREQUENCY_HOT 221 }; 222 223 /* Ways of optimizing code. */ 224 enum optimization_type { 225 /* Prioritize speed over size. */ 226 OPTIMIZE_FOR_SPEED, 227 228 /* Only do things that are good for both size and speed. */ 229 OPTIMIZE_FOR_BOTH, 230 231 /* Prioritize size over speed. */ 232 OPTIMIZE_FOR_SIZE 233 }; 234 235 /* Enumerates a padding direction. */ 236 enum pad_direction { 237 /* No padding is required. */ 238 PAD_NONE, 239 240 /* Insert padding above the data, i.e. at higher memeory addresses 241 when dealing with memory, and at the most significant end when 242 dealing with registers. */ 243 PAD_UPWARD, 244 245 /* Insert padding below the data, i.e. at lower memeory addresses 246 when dealing with memory, and at the least significant end when 247 dealing with registers. */ 248 PAD_DOWNWARD 249 }; 250 251 /* Possible initialization status of a variable. When requested 252 by the user, this information is tracked and recorded in the DWARF 253 debug information, along with the variable's location. */ 254 enum var_init_status 255 { 256 VAR_INIT_STATUS_UNKNOWN, 257 VAR_INIT_STATUS_UNINITIALIZED, 258 VAR_INIT_STATUS_INITIALIZED 259 }; 260 261 /* Names for the different levels of -Wstrict-overflow=N. The numeric 262 values here correspond to N. */ 263 enum warn_strict_overflow_code 264 { 265 /* Overflow warning that should be issued with -Wall: a questionable 266 construct that is easy to avoid even when using macros. Example: 267 folding (x + CONSTANT > x) to 1. */ 268 WARN_STRICT_OVERFLOW_ALL = 1, 269 /* Overflow warning about folding a comparison to a constant because 270 of undefined signed overflow, other than cases covered by 271 WARN_STRICT_OVERFLOW_ALL. Example: folding (abs (x) >= 0) to 1 272 (this is false when x == INT_MIN). */ 273 WARN_STRICT_OVERFLOW_CONDITIONAL = 2, 274 /* Overflow warning about changes to comparisons other than folding 275 them to a constant. Example: folding (x + 1 > 1) to (x > 0). */ 276 WARN_STRICT_OVERFLOW_COMPARISON = 3, 277 /* Overflow warnings not covered by the above cases. Example: 278 folding ((x * 10) / 5) to (x * 2). */ 279 WARN_STRICT_OVERFLOW_MISC = 4, 280 /* Overflow warnings about reducing magnitude of constants in 281 comparison. Example: folding (x + 2 > y) to (x + 1 >= y). */ 282 WARN_STRICT_OVERFLOW_MAGNITUDE = 5 283 }; 284 285 /* The type of an alias set. Code currently assumes that variables of 286 this type can take the values 0 (the alias set which aliases 287 everything) and -1 (sometimes indicating that the alias set is 288 unknown, sometimes indicating a memory barrier) and -2 (indicating 289 that the alias set should be set to a unique value but has not been 290 set yet). */ 291 typedef int alias_set_type; 292 293 struct edge_def; 294 typedef struct edge_def *edge; 295 typedef const struct edge_def *const_edge; 296 struct basic_block_def; 297 typedef struct basic_block_def *basic_block; 298 typedef const struct basic_block_def *const_basic_block; 299 300 #if !defined (GENERATOR_FILE) 301 # define OBSTACK_CHUNK_SIZE memory_block_pool::block_size 302 # define obstack_chunk_alloc mempool_obstack_chunk_alloc 303 # define obstack_chunk_free mempool_obstack_chunk_free 304 #else 305 # define OBSTACK_CHUNK_SIZE 0 306 # define obstack_chunk_alloc xmalloc 307 # define obstack_chunk_free free 308 #endif 309 310 #define gcc_obstack_init(OBSTACK) \ 311 obstack_specify_allocation ((OBSTACK), OBSTACK_CHUNK_SIZE, 0, \ 312 obstack_chunk_alloc, \ 313 obstack_chunk_free) 314 315 /* enum reg_class is target specific, so it should not appear in 316 target-independent code or interfaces, like the target hook declarations 317 in target.h. */ 318 typedef int reg_class_t; 319 320 class rtl_opt_pass; 321 322 namespace gcc { 323 class context; 324 } 325 326 typedef std::pair <tree, tree> tree_pair; 327 328 #else 329 330 struct _dont_use_rtx_here_; 331 struct _dont_use_rtvec_here_; 332 struct _dont_use_rtx_insn_here_; 333 union _dont_use_tree_here_; 334 #define rtx struct _dont_use_rtx_here_ * 335 #define const_rtx struct _dont_use_rtx_here_ * 336 #define rtvec struct _dont_use_rtvec_here * 337 #define const_rtvec struct _dont_use_rtvec_here * 338 #define rtx_insn struct _dont_use_rtx_insn_here_ 339 #define tree union _dont_use_tree_here_ * 340 #define const_tree union _dont_use_tree_here_ * 341 342 typedef struct scalar_mode scalar_mode; 343 typedef struct scalar_int_mode scalar_int_mode; 344 typedef struct scalar_float_mode scalar_float_mode; 345 typedef struct complex_mode complex_mode; 346 347 #endif 348 349 /* Classes of functions that compiler needs to check 350 whether they are present at the runtime or not. */ 351 enum function_class { 352 function_c94, 353 function_c99_misc, 354 function_c99_math_complex, 355 function_sincos, 356 function_c11_misc 357 }; 358 359 /* Enumerate visibility settings. This is deliberately ordered from most 360 to least visibility. */ 361 enum symbol_visibility 362 { 363 VISIBILITY_DEFAULT, 364 VISIBILITY_PROTECTED, 365 VISIBILITY_HIDDEN, 366 VISIBILITY_INTERNAL 367 }; 368 369 /* enums used by the targetm.excess_precision hook. */ 370 371 enum flt_eval_method 372 { 373 FLT_EVAL_METHOD_UNPREDICTABLE = -1, 374 FLT_EVAL_METHOD_PROMOTE_TO_FLOAT = 0, 375 FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE = 1, 376 FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE = 2, 377 FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 = 16 378 }; 379 380 enum excess_precision_type 381 { 382 EXCESS_PRECISION_TYPE_IMPLICIT, 383 EXCESS_PRECISION_TYPE_STANDARD, 384 EXCESS_PRECISION_TYPE_FAST 385 }; 386 387 /* Support for user-provided GGC and PCH markers. The first parameter 388 is a pointer to a pointer, the second a cookie. */ 389 typedef void (*gt_pointer_operator) (void *, void *); 390 391 #if !defined (HAVE_UCHAR) 392 typedef unsigned char uchar; 393 #endif 394 395 /* Most source files will require the following headers. */ 396 #if !defined (USED_FOR_TARGET) 397 #include "insn-modes.h" 398 #include "signop.h" 399 #include "wide-int.h" 400 #include "wide-int-print.h" 401 402 /* On targets that don't need polynomial offsets, target-specific code 403 should be able to treat poly_int like a normal constant, with a 404 conversion operator going from the former to the latter. We also 405 allow this for gencondmd.c for all targets, so that we can treat 406 machine_modes as enums without causing build failures. */ 407 #if (defined (IN_TARGET_CODE) \ 408 && (defined (USE_ENUM_MODES) || NUM_POLY_INT_COEFFS == 1)) 409 #define POLY_INT_CONVERSION 1 410 #else 411 #define POLY_INT_CONVERSION 0 412 #endif 413 414 #include "poly-int.h" 415 #include "poly-int-types.h" 416 #include "insn-modes-inline.h" 417 #include "machmode.h" 418 #include "double-int.h" 419 /* Most host source files will require the following headers. */ 420 #if !defined (GENERATOR_FILE) 421 #include "real.h" 422 #include "fixed-value.h" 423 #include "hash-table.h" 424 #include "hash-set.h" 425 #include "input.h" 426 #include "is-a.h" 427 #include "memory-block.h" 428 #include "dumpfile.h" 429 #endif 430 #endif /* GENERATOR_FILE && !USED_FOR_TARGET */ 431 432 #endif /* coretypes.h */ 433