1 /* Header for code translation functions 2 Copyright (C) 2002-2022 Free Software Foundation, Inc. 3 Contributed by Paul Brook 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 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 GFC_TRANS_H 22 #define GFC_TRANS_H 23 24 #include "predict.h" /* For enum br_predictor and PRED_*. */ 25 26 /* Mangled symbols take the form __module__name or __module.submodule__name. */ 27 #define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*3+5) 28 29 /* Struct for holding a block of statements. It should be treated as an 30 opaque entity and not modified directly. This allows us to change the 31 underlying representation of statement lists. */ 32 typedef struct 33 { 34 tree head; 35 unsigned int has_scope:1; 36 } 37 stmtblock_t; 38 39 /* a simplified expression */ 40 typedef struct gfc_se 41 { 42 /* Code blocks to be executed before and after using the value. */ 43 stmtblock_t pre; 44 stmtblock_t post; 45 46 /* the result of the expression */ 47 tree expr; 48 49 /* The length of a character string value. */ 50 tree string_length; 51 52 /* When expr is a reference to a class object, store its vptr access 53 here. */ 54 tree class_vptr; 55 56 /* Whether expr is a reference to an unlimited polymorphic object. */ 57 unsigned unlimited_polymorphic:1; 58 59 /* If set gfc_conv_variable will return an expression for the array 60 descriptor. When set, want_pointer should also be set. 61 If not set scalarizing variables will be substituted. */ 62 unsigned descriptor_only:1; 63 64 /* When this is set gfc_conv_expr returns the address of a variable. Only 65 applies to EXPR_VARIABLE nodes. 66 Also used by gfc_conv_array_parameter. When set this indicates a pointer 67 to the descriptor should be returned, rather than the descriptor itself. 68 */ 69 unsigned want_pointer:1; 70 71 /* An array function call returning without a temporary. Also used for array 72 pointer assignments. */ 73 unsigned direct_byref:1; 74 75 /* If direct_byref is set, do work out the descriptor as in that case but 76 do still create a new descriptor variable instead of using an 77 existing one. This is useful for special pointer assignments like 78 rank remapping where we have to process the descriptor before 79 assigning to final one. */ 80 unsigned byref_noassign:1; 81 82 /* Ignore absent optional arguments. Used for some intrinsics. */ 83 unsigned ignore_optional:1; 84 85 /* When this is set the data and offset fields of the returned descriptor 86 are NULL. Used by intrinsic size. */ 87 unsigned data_not_needed:1; 88 89 /* If set, gfc_conv_procedure_call does not put byref calls into se->pre. */ 90 unsigned no_function_call:1; 91 92 /* If set, we will force the creation of a temporary. Useful to disable 93 non-copying procedure argument passing optimizations, when some function 94 args alias. */ 95 unsigned force_tmp:1; 96 97 /* If set, will pass subref descriptors without a temporary. */ 98 unsigned force_no_tmp:1; 99 100 /* Unconditionally calculate offset for array segments and constant 101 arrays in gfc_conv_expr_descriptor. */ 102 unsigned use_offset:1; 103 104 unsigned want_coarray:1; 105 106 /* Scalarization parameters. */ 107 struct gfc_se *parent; 108 struct gfc_ss *ss; 109 struct gfc_loopinfo *loop; 110 } 111 gfc_se; 112 113 typedef struct gfc_co_subroutines_args 114 { 115 tree image_index; 116 tree stat; 117 tree errmsg; 118 tree errmsg_len; 119 } 120 gfc_co_subroutines_args; 121 122 /* Denotes different types of coarray. 123 Please keep in sync with libgfortran/caf/libcaf.h. */ 124 enum gfc_coarray_regtype 125 { 126 GFC_CAF_COARRAY_STATIC, 127 GFC_CAF_COARRAY_ALLOC, 128 GFC_CAF_LOCK_STATIC, 129 GFC_CAF_LOCK_ALLOC, 130 GFC_CAF_CRITICAL, 131 GFC_CAF_EVENT_STATIC, 132 GFC_CAF_EVENT_ALLOC, 133 GFC_CAF_COARRAY_ALLOC_REGISTER_ONLY, 134 GFC_CAF_COARRAY_ALLOC_ALLOCATE_ONLY 135 }; 136 137 138 /* Describes the action to take on _caf_deregister. Keep in sync with 139 gcc/fortran/trans.h. The negative values are not valid for the library and 140 are used by the drivers for building the correct call. */ 141 enum gfc_coarray_deregtype { 142 /* This is no coarray, i.e. build a call to a free (). */ 143 GFC_CAF_COARRAY_NOCOARRAY = -2, 144 /* The driver is to analyze which _caf_deregister ()-call to generate. */ 145 GFC_CAF_COARRAY_ANALYZE = -1, 146 GFC_CAF_COARRAY_DEREGISTER = 0, 147 GFC_CAF_COARRAY_DEALLOCATE_ONLY 148 }; 149 150 151 /* Specify the type of ref handed to the caf communication functions. 152 Please keep in sync with libgfortran/caf/libcaf.h. */ 153 enum gfc_caf_ref_type_t { 154 GFC_CAF_REF_COMPONENT, 155 GFC_CAF_REF_ARRAY, 156 GFC_CAF_REF_STATIC_ARRAY 157 }; 158 159 160 /* Give the reference type of an array ref. 161 Please keep in sync with libgfortran/caf/libcaf.h. */ 162 enum gfc_caf_array_ref_t { 163 GFC_CAF_ARR_REF_NONE = 0, 164 GFC_CAF_ARR_REF_VECTOR, 165 GFC_CAF_ARR_REF_FULL, 166 GFC_CAF_ARR_REF_RANGE, 167 GFC_CAF_ARR_REF_SINGLE, 168 GFC_CAF_ARR_REF_OPEN_END, 169 GFC_CAF_ARR_REF_OPEN_START 170 }; 171 172 173 /* trans-array (structure_alloc_comps) caf_mode bits. */ 174 enum gfc_structure_caf_mode_t { 175 GFC_STRUCTURE_CAF_MODE_ENABLE_COARRAY = 1 << 0, 176 GFC_STRUCTURE_CAF_MODE_IN_COARRAY = 1 << 1, 177 GFC_STRUCTURE_CAF_MODE_DEALLOC_ONLY = 1 << 2 178 }; 179 180 181 /* The array-specific scalarization information. The array members of 182 this struct are indexed by actual array index, and thus can be sparse. */ 183 184 typedef struct gfc_array_info 185 { 186 mpz_t *shape; 187 188 /* The ref that holds information on this section. */ 189 gfc_ref *ref; 190 /* The descriptor of this array. */ 191 tree descriptor; 192 /* holds the pointer to the data array. */ 193 tree data; 194 /* To move some of the array index calculation out of the innermost loop. */ 195 tree offset; 196 tree saved_offset; 197 tree stride0; 198 /* Holds the SS for a subscript. Indexed by actual dimension. */ 199 struct gfc_ss *subscript[GFC_MAX_DIMENSIONS]; 200 201 /* stride and delta are used to access this inside a scalarization loop. 202 start is used in the calculation of these. Indexed by scalarizer 203 dimension. */ 204 tree start[GFC_MAX_DIMENSIONS]; 205 tree end[GFC_MAX_DIMENSIONS]; 206 tree stride[GFC_MAX_DIMENSIONS]; 207 tree delta[GFC_MAX_DIMENSIONS]; 208 } 209 gfc_array_info; 210 211 enum gfc_ss_type 212 { 213 /* A scalar value. This will be evaluated before entering the 214 scalarization loop. */ 215 GFC_SS_SCALAR, 216 217 /* Like GFC_SS_SCALAR it evaluates the expression outside the 218 loop. Is always evaluated as a reference to the temporary, unless 219 temporary evaluation can result in a NULL pointer dereferencing (case of 220 optional arguments). Used for elemental function arguments. */ 221 GFC_SS_REFERENCE, 222 223 /* An array section. Scalarization indices will be substituted during 224 expression translation. */ 225 GFC_SS_SECTION, 226 227 /* A non-elemental function call returning an array. The call is executed 228 before entering the scalarization loop, storing the result in a 229 temporary. This temporary is then used inside the scalarization loop. 230 Simple assignments, e.g. a(:) = fn(), are handled without a temporary 231 as a special case. */ 232 GFC_SS_FUNCTION, 233 234 /* An array constructor. The current implementation is sub-optimal in 235 many cases. It allocated a temporary, assigns the values to it, then 236 uses this temporary inside the scalarization loop. */ 237 GFC_SS_CONSTRUCTOR, 238 239 /* A vector subscript. The vector's descriptor is cached in the 240 "descriptor" field of the associated gfc_ss_info. */ 241 GFC_SS_VECTOR, 242 243 /* A temporary array allocated by the scalarizer. Its rank can be less 244 than that of the assignment expression. */ 245 GFC_SS_TEMP, 246 247 /* An intrinsic function call. Many intrinsic functions which map directly 248 to library calls are created as GFC_SS_FUNCTION nodes. */ 249 GFC_SS_INTRINSIC, 250 251 /* A component of a derived type. */ 252 GFC_SS_COMPONENT 253 }; 254 255 256 typedef struct gfc_ss_info 257 { 258 int refcount; 259 gfc_ss_type type; 260 gfc_expr *expr; 261 tree string_length; 262 263 union 264 { 265 /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */ 266 struct 267 { 268 /* If the scalar is passed as actual argument to an (elemental) procedure, 269 this is the corresponding dummy argument. */ 270 gfc_dummy_arg *dummy_arg; 271 tree value; 272 /* Tells that the scalar is a reference to a variable that might 273 be present on the lhs, so that we should evaluate the value 274 itself before the loop, not just the reference. */ 275 unsigned needs_temporary:1; 276 } 277 scalar; 278 279 /* GFC_SS_TEMP. */ 280 struct 281 { 282 tree type; 283 } 284 temp; 285 286 /* All other types. */ 287 gfc_array_info array; 288 } 289 data; 290 291 /* This is used by assignments requiring temporaries. The bits specify which 292 loops the terms appear in. This will be 1 for the RHS expressions, 293 2 for the LHS expressions, and 3(=1|2) for the temporary. */ 294 unsigned useflags:2; 295 296 /* Suppresses precalculation of scalars in WHERE assignments. */ 297 unsigned where:1; 298 299 /* This set for an elemental function that contains expressions for 300 external arrays, thereby triggering creation of a temporary. */ 301 unsigned array_outer_dependency:1; 302 303 /* Tells whether the SS is for an actual argument which can be a NULL 304 reference. In other words, the associated dummy argument is OPTIONAL. 305 Used to handle elemental procedures. */ 306 bool can_be_null_ref; 307 } 308 gfc_ss_info; 309 310 #define gfc_get_ss_info() XCNEW (gfc_ss_info) 311 312 313 /* Scalarization State chain. Created by walking an expression tree before 314 creating the scalarization loops. Then passed as part of a gfc_se structure 315 to translate the expression inside the loop. Note that these chains are 316 terminated by gfc_ss_terminator, not NULL. A NULL pointer in a gfc_se 317 indicates to gfc_conv_* that this is a scalar expression. 318 SS structures can only belong to a single loopinfo. They must be added 319 otherwise they will not get freed. */ 320 321 typedef struct gfc_ss 322 { 323 gfc_ss_info *info; 324 325 int dimen; 326 /* Translation from loop dimensions to actual array dimensions. 327 actual_dim = dim[loop_dim] */ 328 int dim[GFC_MAX_DIMENSIONS]; 329 330 /* All the SS in a loop and linked through loop_chain. The SS for an 331 expression are linked by the next pointer. */ 332 struct gfc_ss *loop_chain; 333 struct gfc_ss *next; 334 335 /* Non-null if the ss is part of a nested loop. */ 336 struct gfc_ss *parent; 337 338 /* If the evaluation of an expression requires a nested loop (for example 339 if the sum intrinsic is evaluated inline), this points to the nested 340 loop's gfc_ss. */ 341 struct gfc_ss *nested_ss; 342 343 /* The loop this gfc_ss is in. */ 344 struct gfc_loopinfo *loop; 345 346 unsigned is_alloc_lhs:1; 347 unsigned no_bounds_check:1; 348 } 349 gfc_ss; 350 #define gfc_get_ss() XCNEW (gfc_ss) 351 352 /* The contents of this aren't actually used. A NULL SS chain indicates a 353 scalar expression, so this pointer is used to terminate SS chains. */ 354 extern gfc_ss * const gfc_ss_terminator; 355 356 /* Holds information about an expression while it is being scalarized. */ 357 typedef struct gfc_loopinfo 358 { 359 stmtblock_t pre; 360 stmtblock_t post; 361 362 int dimen; 363 364 /* All the SS involved with this loop. */ 365 gfc_ss *ss; 366 /* The SS describing the temporary used in an assignment. */ 367 gfc_ss *temp_ss; 368 369 /* Non-null if this loop is nested in another one. */ 370 struct gfc_loopinfo *parent; 371 372 /* Chain of nested loops. */ 373 struct gfc_loopinfo *nested, *next; 374 375 /* The scalarization loop index variables. */ 376 tree loopvar[GFC_MAX_DIMENSIONS]; 377 378 /* The bounds of the scalarization loops. */ 379 tree from[GFC_MAX_DIMENSIONS]; 380 tree to[GFC_MAX_DIMENSIONS]; 381 gfc_ss *specloop[GFC_MAX_DIMENSIONS]; 382 383 /* The code member contains the code for the body of the next outer loop. */ 384 stmtblock_t code[GFC_MAX_DIMENSIONS]; 385 386 /* Order in which the dimensions should be looped, innermost first. */ 387 int order[GFC_MAX_DIMENSIONS]; 388 389 /* Enum to control loop reversal. */ 390 gfc_reverse reverse[GFC_MAX_DIMENSIONS]; 391 392 /* The number of dimensions for which a temporary is used. */ 393 int temp_dim; 394 395 /* If set we don't need the loop variables. */ 396 unsigned array_parameter:1; 397 } 398 gfc_loopinfo; 399 400 #define gfc_get_loopinfo() XCNEW (gfc_loopinfo) 401 402 /* Information about a symbol that has been shadowed by a temporary. */ 403 typedef struct 404 { 405 symbol_attribute attr; 406 tree decl; 407 } 408 gfc_saved_var; 409 410 411 /* Store information about a block of code together with special 412 initialization and clean-up code. This can be used to incrementally add 413 init and cleanup, and in the end put everything together to a 414 try-finally expression. */ 415 typedef struct 416 { 417 tree init; 418 tree cleanup; 419 tree code; 420 } 421 gfc_wrapped_block; 422 423 /* Class API functions. */ 424 tree gfc_class_set_static_fields (tree, tree, tree); 425 tree gfc_class_data_get (tree); 426 tree gfc_class_vptr_get (tree); 427 tree gfc_class_len_get (tree); 428 tree gfc_resize_class_size_with_len (stmtblock_t *, tree, tree); 429 gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *, bool is_mold = false, 430 gfc_typespec **ts = NULL); 431 /* Get an accessor to the class' vtab's * field, when a class handle is 432 available. */ 433 tree gfc_class_vtab_hash_get (tree); 434 tree gfc_class_vtab_size_get (tree); 435 tree gfc_class_vtab_def_init_get (tree); 436 tree gfc_class_vtab_copy_get (tree); 437 tree gfc_class_vtab_final_get (tree); 438 /* Get an accessor to the vtab's * field, when a vptr handle is present. */ 439 tree gfc_vptr_hash_get (tree); 440 tree gfc_vptr_size_get (tree); 441 tree gfc_vptr_def_init_get (tree); 442 tree gfc_vptr_copy_get (tree); 443 tree gfc_vptr_final_get (tree); 444 tree gfc_vptr_deallocate_get (tree); 445 void gfc_reset_vptr (stmtblock_t *, gfc_expr *); 446 void gfc_reset_len (stmtblock_t *, gfc_expr *); 447 tree gfc_get_class_from_gfc_expr (gfc_expr *); 448 tree gfc_get_class_from_expr (tree); 449 tree gfc_get_vptr_from_expr (tree); 450 tree gfc_copy_class_to_class (tree, tree, tree, bool); 451 bool gfc_add_finalizer_call (stmtblock_t *, gfc_expr *); 452 bool gfc_add_comp_finalizer_call (stmtblock_t *, tree, gfc_component *, bool); 453 454 void gfc_conv_derived_to_class (gfc_se *, gfc_expr *, gfc_typespec, tree, bool, 455 bool, tree *derived_array = NULL); 456 void gfc_conv_class_to_class (gfc_se *, gfc_expr *, gfc_typespec, bool, bool, 457 bool, bool); 458 459 /* Initialize an init/cleanup block. */ 460 void gfc_start_wrapped_block (gfc_wrapped_block* block, tree code); 461 /* Add a pair of init/cleanup code to the block. Each one might be a 462 NULL_TREE if not required. */ 463 void gfc_add_init_cleanup (gfc_wrapped_block* block, tree init, tree cleanup); 464 /* Finalize the block, that is, create a single expression encapsulating the 465 original code together with init and clean-up code. */ 466 tree gfc_finish_wrapped_block (gfc_wrapped_block* block); 467 468 469 /* Advance the SS chain to the next term. */ 470 void gfc_advance_se_ss_chain (gfc_se *); 471 472 /* Call this to initialize a gfc_se structure before use 473 first parameter is structure to initialize, second is 474 parent to get scalarization data from, or NULL. */ 475 void gfc_init_se (gfc_se *, gfc_se *); 476 477 /* Create an artificial variable decl and add it to the current scope. */ 478 tree gfc_create_var (tree, const char *); 479 /* Like above but doesn't add it to the current scope. */ 480 tree gfc_create_var_np (tree, const char *); 481 482 /* Store the result of an expression in a temp variable so it can be used 483 repeatedly even if the original changes */ 484 void gfc_make_safe_expr (gfc_se * se); 485 486 /* Makes sure se is suitable for passing as a function string parameter. */ 487 void gfc_conv_string_parameter (gfc_se * se); 488 489 /* Compare two strings. */ 490 tree gfc_build_compare_string (tree, tree, tree, tree, int, enum tree_code); 491 492 /* When using the gfc_conv_* make sure you understand what they do, i.e. 493 when a POST chain may be created, and what the returned expression may be 494 used for. Note that character strings have special handling. This 495 should not be a problem as most statements/operations only deal with 496 numeric/logical types. See the implementations in trans-expr.cc 497 for details of the individual functions. */ 498 499 void gfc_conv_expr (gfc_se * se, gfc_expr * expr); 500 void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); 501 void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); 502 void gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr); 503 void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); 504 505 506 /* trans-expr.cc */ 507 tree gfc_get_character_len_in_bytes (tree); 508 tree gfc_conv_scalar_to_descriptor (gfc_se *, tree, symbol_attribute); 509 tree gfc_get_ultimate_alloc_ptr_comps_caf_token (gfc_se *, gfc_expr *); 510 tree gfc_string_to_single_character (tree len, tree str, int kind); 511 tree gfc_get_tree_for_caf_expr (gfc_expr *); 512 void gfc_get_caf_token_offset (gfc_se*, tree *, tree *, tree, tree, gfc_expr *); 513 tree gfc_caf_get_image_index (stmtblock_t *, gfc_expr *, tree); 514 void gfc_simple_for_loop (stmtblock_t *, tree, tree, tree, enum tree_code, tree, 515 tree); 516 517 /* Find the decl containing the auxiliary variables for assigned variables. */ 518 void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); 519 /* If the value is not constant, Create a temporary and copy the value. */ 520 tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *); 521 tree gfc_evaluate_now (tree, stmtblock_t *); 522 tree gfc_evaluate_now_function_scope (tree, stmtblock_t *); 523 524 /* Find the appropriate variant of a math intrinsic. */ 525 tree gfc_builtin_decl_for_float_kind (enum built_in_function, int); 526 527 tree size_of_string_in_bytes (int, tree); 528 529 /* Intrinsic procedure handling. */ 530 tree gfc_conv_intrinsic_subroutine (gfc_code *); 531 void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); 532 bool gfc_conv_ieee_arithmetic_function (gfc_se *, gfc_expr *); 533 tree gfc_save_fp_state (stmtblock_t *); 534 void gfc_restore_fp_state (stmtblock_t *, tree); 535 536 bool gfc_expr_is_variable (gfc_expr *); 537 538 /* Does an intrinsic map directly to an external library call 539 This is true for array-returning intrinsics, unless 540 gfc_inline_intrinsic_function_p returns true. */ 541 int gfc_is_intrinsic_libcall (gfc_expr *); 542 543 /* Used to call ordinary functions/subroutines 544 and procedure pointer components. */ 545 int gfc_conv_procedure_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *, 546 gfc_expr *, vec<tree, va_gc> *); 547 548 void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent, bool, 549 const gfc_symbol *fsym = NULL, 550 const char *proc_name = NULL, 551 gfc_symbol *sym = NULL, 552 bool check_contiguous = false); 553 554 void gfc_conv_is_contiguous_expr (gfc_se *, gfc_expr *); 555 556 /* Generate code for a scalar assignment. */ 557 tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool, 558 bool c = false); 559 560 /* Translate COMMON blocks. */ 561 void gfc_trans_common (gfc_namespace *); 562 563 /* Translate a derived type constructor. */ 564 void gfc_conv_structure (gfc_se *, gfc_expr *, int); 565 566 /* Return an expression which determines if a dummy parameter is present. */ 567 tree gfc_conv_expr_present (gfc_symbol *, bool use_saved_decl = false); 568 /* Convert a missing, dummy argument into a null or zero. */ 569 void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec, int); 570 571 /* Lowering of component references. */ 572 void gfc_conv_component_ref (gfc_se * se, gfc_ref * ref); 573 void conv_parent_component_references (gfc_se * se, gfc_ref * ref); 574 575 /* Automatically dereference var. */ 576 tree gfc_maybe_dereference_var (gfc_symbol *, tree, bool desc_only = false, 577 bool is_classarray = false); 578 579 /* Generate code to allocate a string temporary. */ 580 tree gfc_conv_string_tmp (gfc_se *, tree, tree); 581 /* Get the string length variable belonging to an expression. */ 582 tree gfc_get_expr_charlen (gfc_expr *); 583 /* Initialize a string length variable. */ 584 void gfc_conv_string_length (gfc_charlen *, gfc_expr *, stmtblock_t *); 585 /* Ensure type sizes can be gimplified. */ 586 void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); 587 588 /* Add an expression to the end of a block. */ 589 void gfc_add_expr_to_block (stmtblock_t *, tree); 590 /* Add an expression to the beginning of a block. */ 591 void gfc_prepend_expr_to_block (stmtblock_t *, tree); 592 /* Add a block to the end of a block. */ 593 void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); 594 /* Add a MODIFY_EXPR to a block. */ 595 void gfc_add_modify_loc (location_t, stmtblock_t *, tree, tree); 596 void gfc_add_modify (stmtblock_t *, tree, tree); 597 598 /* Initialize a statement block. */ 599 void gfc_init_block (stmtblock_t *); 600 /* Start a new statement block. Like gfc_init_block but also starts a new 601 variable scope. */ 602 void gfc_start_block (stmtblock_t *); 603 /* Finish a statement block. Also closes the scope if the block was created 604 with gfc_start_block. */ 605 tree gfc_finish_block (stmtblock_t *); 606 /* Merge the scope of a block with its parent. */ 607 void gfc_merge_block_scope (stmtblock_t * block); 608 609 /* Return the backend label decl. */ 610 tree gfc_get_label_decl (gfc_st_label *); 611 612 /* Return the decl for an external function. */ 613 tree gfc_get_extern_function_decl (gfc_symbol *, 614 gfc_actual_arglist *args = NULL, 615 const char *fnspec = NULL); 616 617 /* Build an ADDR_EXPR. */ 618 tree gfc_build_addr_expr (tree, tree); 619 620 /* Build an ARRAY_REF. */ 621 tree gfc_build_array_ref (tree, tree, tree, 622 bool non_negative_offset = false, 623 tree vptr = NULL_TREE); 624 625 /* Build an array ref using pointer arithmetic. */ 626 tree gfc_build_spanned_array_ref (tree base, tree offset, tree span); 627 628 /* Creates a label. Decl is artificial if label_id == NULL_TREE. */ 629 tree gfc_build_label_decl (tree); 630 631 /* Return the decl used to hold the function return value. 632 Do not use if the function has an explicit result variable. */ 633 tree gfc_get_fake_result_decl (gfc_symbol *, int); 634 635 /* Add a decl to the binding level for the current function. */ 636 void gfc_add_decl_to_function (tree); 637 638 /* Make prototypes for runtime library functions. */ 639 void gfc_build_builtin_function_decls (void); 640 641 /* Set the backend source location of a decl. */ 642 void gfc_set_decl_location (tree, locus *); 643 644 /* Get a module symbol backend_decl if possible. */ 645 bool gfc_get_module_backend_decl (gfc_symbol *); 646 647 /* Return the variable decl for a symbol. */ 648 tree gfc_get_symbol_decl (gfc_symbol *); 649 650 /* Build a static initializer. */ 651 tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool, bool); 652 653 /* Assign a default initializer to a derived type. */ 654 void gfc_init_default_dt (gfc_symbol *, stmtblock_t *, bool); 655 656 /* Substitute a temporary variable in place of the real one. */ 657 void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); 658 659 /* Restore the original variable. */ 660 void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); 661 662 /* Setting a decl assembler name, mangling it according to target rules 663 (like Windows @NN decorations). */ 664 void gfc_set_decl_assembler_name (tree, tree); 665 666 /* Returns true if a variable of specified size should go on the stack. */ 667 int gfc_can_put_var_on_stack (tree); 668 669 /* Set GFC_DECL_SCALAR_* on decl from sym if needed. */ 670 void gfc_finish_decl_attrs (tree, symbol_attribute *); 671 672 /* Allocate the lang-specific part of a decl node. */ 673 void gfc_allocate_lang_decl (tree); 674 675 /* Get the location suitable for the ME from a gfortran locus; required to get 676 the column number right. */ 677 location_t gfc_get_location (locus *); 678 679 /* Advance along a TREE_CHAIN. */ 680 tree gfc_advance_chain (tree, int); 681 682 /* Create a decl for a function. */ 683 void gfc_create_function_decl (gfc_namespace *, bool); 684 /* Generate the code for a function. */ 685 void gfc_generate_function_code (gfc_namespace *); 686 /* Output a BLOCK DATA program unit. */ 687 void gfc_generate_block_data (gfc_namespace *); 688 /* Output a decl for a module variable. */ 689 void gfc_generate_module_vars (gfc_namespace *); 690 /* Get the appropriate return statement for a procedure. */ 691 tree gfc_generate_return (void); 692 693 struct module_decl_hasher : ggc_ptr_hash<tree_node> 694 { 695 typedef const char *compare_type; 696 697 static hashval_t hash (tree); 698 static bool equal (tree, const char *); 699 }; 700 701 struct GTY((for_user)) module_htab_entry { 702 const char *name; 703 tree namespace_decl; 704 hash_table<module_decl_hasher> *GTY (()) decls; 705 }; 706 707 struct module_htab_entry *gfc_find_module (const char *); 708 void gfc_module_add_decl (struct module_htab_entry *, tree); 709 710 /* Get and set the current location. */ 711 void gfc_save_backend_locus (locus *); 712 void gfc_set_backend_locus (locus *); 713 void gfc_restore_backend_locus (locus *); 714 715 /* Handle static constructor functions. */ 716 extern GTY(()) tree gfc_static_ctors; 717 void gfc_generate_constructors (void); 718 719 /* Get the string length of an array constructor. */ 720 bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor_base, tree *); 721 722 /* Mark a condition as likely or unlikely. */ 723 tree gfc_likely (tree, enum br_predictor); 724 tree gfc_unlikely (tree, enum br_predictor); 725 726 /* Return the string length of a deferred character length component. */ 727 bool gfc_deferred_strlen (gfc_component *, tree *); 728 729 /* Generate a runtime error call. */ 730 tree gfc_trans_runtime_error (bool, locus*, const char*, ...); 731 732 /* Generate a runtime warning/error check. */ 733 void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *, 734 const char *, ...); 735 736 /* Generate a runtime check for same string length. */ 737 void gfc_trans_same_strlen_check (const char*, locus*, tree, tree, 738 stmtblock_t*); 739 740 /* Generate a call to free(). */ 741 tree gfc_call_free (tree); 742 743 /* Allocate memory after performing a few checks. */ 744 tree gfc_call_malloc (stmtblock_t *, tree, tree); 745 746 /* Build a memcpy call. */ 747 tree gfc_build_memcpy_call (tree, tree, tree); 748 749 /* Register memory with the coarray library. */ 750 void gfc_allocate_using_caf_lib (stmtblock_t *, tree, tree, tree, tree, tree, 751 tree, gfc_coarray_regtype); 752 753 /* Allocate memory for allocatable variables, with optional status variable. */ 754 void gfc_allocate_allocatable (stmtblock_t*, tree, tree, tree, tree, 755 tree, tree, tree, gfc_expr*, int); 756 757 /* Allocate memory, with optional status variable. */ 758 void gfc_allocate_using_malloc (stmtblock_t *, tree, tree, tree); 759 760 /* Generate code to deallocate an array. */ 761 tree gfc_deallocate_with_status (tree, tree, tree, tree, tree, bool, 762 gfc_expr *, int, tree a = NULL_TREE, 763 tree c = NULL_TREE); 764 tree gfc_deallocate_scalar_with_status (tree, tree, tree, bool, gfc_expr*, 765 gfc_typespec, bool c = false); 766 767 /* Generate code to call realloc(). */ 768 tree gfc_call_realloc (stmtblock_t *, tree, tree); 769 770 /* Assign a derived type constructor to a variable. */ 771 tree gfc_trans_structure_assign (tree, gfc_expr *, bool, bool c = false); 772 773 /* Generate code for an assignment, includes scalarization. */ 774 tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool, bool, bool p = false, 775 bool a = true); 776 777 /* Generate code for a pointer assignment. */ 778 tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); 779 780 /* Initialize function decls for library functions. */ 781 void gfc_build_intrinsic_lib_fndecls (void); 782 /* Create function decls for IO library functions. */ 783 void gfc_build_io_library_fndecls (void); 784 /* Build a function decl for a library function. */ 785 tree gfc_build_library_function_decl (tree, tree, int, ...); 786 tree gfc_build_library_function_decl_with_spec (tree name, const char *spec, 787 tree rettype, int nargs, ...); 788 789 /* Process the local variable decls of a block construct. */ 790 void gfc_process_block_locals (gfc_namespace*); 791 792 /* Output initialization/clean-up code that was deferred. */ 793 void gfc_trans_deferred_vars (gfc_symbol*, gfc_wrapped_block *); 794 795 /* In f95-lang.cc. */ 796 tree pushdecl (tree); 797 tree pushdecl_top_level (tree); 798 void pushlevel (void); 799 tree poplevel (int, int); 800 tree getdecls (void); 801 802 /* In trans-types.cc. */ 803 struct array_descr_info; 804 bool gfc_get_array_descr_info (const_tree, struct array_descr_info *); 805 806 /* In trans-openmp.cc */ 807 bool gfc_omp_is_allocatable_or_ptr (const_tree); 808 tree gfc_omp_check_optional_argument (tree, bool); 809 tree gfc_omp_array_data (tree, bool); 810 bool gfc_omp_privatize_by_reference (const_tree); 811 enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); 812 enum omp_clause_defaultmap_kind gfc_omp_predetermined_mapping (tree); 813 tree gfc_omp_report_decl (tree); 814 tree gfc_omp_clause_default_ctor (tree, tree, tree); 815 tree gfc_omp_clause_copy_ctor (tree, tree, tree); 816 tree gfc_omp_clause_assign_op (tree, tree, tree); 817 tree gfc_omp_clause_linear_ctor (tree, tree, tree, tree); 818 tree gfc_omp_clause_dtor (tree, tree); 819 void gfc_omp_finish_clause (tree, gimple_seq *, bool); 820 bool gfc_omp_allocatable_p (tree); 821 bool gfc_omp_scalar_p (tree, bool); 822 bool gfc_omp_scalar_target_p (tree); 823 bool gfc_omp_disregard_value_expr (tree, bool); 824 bool gfc_omp_private_debug_clause (tree, bool); 825 bool gfc_omp_private_outer_ref (tree); 826 struct gimplify_omp_ctx; 827 void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); 828 829 /* In trans-intrinsic.cc. */ 830 void gfc_conv_intrinsic_mvbits (gfc_se *, gfc_actual_arglist *, 831 gfc_loopinfo *); 832 833 /* Runtime library function decls. */ 834 extern GTY(()) tree gfor_fndecl_pause_numeric; 835 extern GTY(()) tree gfor_fndecl_pause_string; 836 extern GTY(()) tree gfor_fndecl_stop_numeric; 837 extern GTY(()) tree gfor_fndecl_stop_string; 838 extern GTY(()) tree gfor_fndecl_error_stop_numeric; 839 extern GTY(()) tree gfor_fndecl_error_stop_string; 840 extern GTY(()) tree gfor_fndecl_runtime_error; 841 extern GTY(()) tree gfor_fndecl_runtime_error_at; 842 extern GTY(()) tree gfor_fndecl_runtime_warning_at; 843 extern GTY(()) tree gfor_fndecl_os_error_at; 844 extern GTY(()) tree gfor_fndecl_generate_error; 845 extern GTY(()) tree gfor_fndecl_set_fpe; 846 extern GTY(()) tree gfor_fndecl_set_options; 847 extern GTY(()) tree gfor_fndecl_ttynam; 848 extern GTY(()) tree gfor_fndecl_ctime; 849 extern GTY(()) tree gfor_fndecl_fdate; 850 extern GTY(()) tree gfor_fndecl_in_pack; 851 extern GTY(()) tree gfor_fndecl_in_unpack; 852 extern GTY(()) tree gfor_fndecl_associated; 853 extern GTY(()) tree gfor_fndecl_system_clock4; 854 extern GTY(()) tree gfor_fndecl_system_clock8; 855 856 857 /* Coarray run-time library function decls. */ 858 extern GTY(()) tree gfor_fndecl_caf_init; 859 extern GTY(()) tree gfor_fndecl_caf_finalize; 860 extern GTY(()) tree gfor_fndecl_caf_this_image; 861 extern GTY(()) tree gfor_fndecl_caf_num_images; 862 extern GTY(()) tree gfor_fndecl_caf_register; 863 extern GTY(()) tree gfor_fndecl_caf_deregister; 864 extern GTY(()) tree gfor_fndecl_caf_get; 865 extern GTY(()) tree gfor_fndecl_caf_send; 866 extern GTY(()) tree gfor_fndecl_caf_sendget; 867 extern GTY(()) tree gfor_fndecl_caf_get_by_ref; 868 extern GTY(()) tree gfor_fndecl_caf_send_by_ref; 869 extern GTY(()) tree gfor_fndecl_caf_sendget_by_ref; 870 extern GTY(()) tree gfor_fndecl_caf_sync_all; 871 extern GTY(()) tree gfor_fndecl_caf_sync_memory; 872 extern GTY(()) tree gfor_fndecl_caf_sync_images; 873 extern GTY(()) tree gfor_fndecl_caf_stop_numeric; 874 extern GTY(()) tree gfor_fndecl_caf_stop_str; 875 extern GTY(()) tree gfor_fndecl_caf_error_stop; 876 extern GTY(()) tree gfor_fndecl_caf_error_stop_str; 877 extern GTY(()) tree gfor_fndecl_caf_atomic_def; 878 extern GTY(()) tree gfor_fndecl_caf_atomic_ref; 879 extern GTY(()) tree gfor_fndecl_caf_atomic_cas; 880 extern GTY(()) tree gfor_fndecl_caf_atomic_op; 881 extern GTY(()) tree gfor_fndecl_caf_lock; 882 extern GTY(()) tree gfor_fndecl_caf_unlock; 883 extern GTY(()) tree gfor_fndecl_caf_event_post; 884 extern GTY(()) tree gfor_fndecl_caf_event_wait; 885 extern GTY(()) tree gfor_fndecl_caf_event_query; 886 extern GTY(()) tree gfor_fndecl_caf_fail_image; 887 extern GTY(()) tree gfor_fndecl_caf_failed_images; 888 extern GTY(()) tree gfor_fndecl_caf_image_status; 889 extern GTY(()) tree gfor_fndecl_caf_stopped_images; 890 extern GTY(()) tree gfor_fndecl_caf_form_team; 891 extern GTY(()) tree gfor_fndecl_caf_change_team; 892 extern GTY(()) tree gfor_fndecl_caf_end_team; 893 extern GTY(()) tree gfor_fndecl_caf_get_team; 894 extern GTY(()) tree gfor_fndecl_caf_sync_team; 895 extern GTY(()) tree gfor_fndecl_caf_team_number; 896 extern GTY(()) tree gfor_fndecl_co_broadcast; 897 extern GTY(()) tree gfor_fndecl_co_max; 898 extern GTY(()) tree gfor_fndecl_co_min; 899 extern GTY(()) tree gfor_fndecl_co_reduce; 900 extern GTY(()) tree gfor_fndecl_co_sum; 901 extern GTY(()) tree gfor_fndecl_caf_is_present; 902 903 /* Math functions. Many other math functions are handled in 904 trans-intrinsic.cc. */ 905 906 typedef struct GTY(()) gfc_powdecl_list { 907 tree integer; 908 tree real; 909 tree cmplx; 910 } 911 gfc_powdecl_list; 912 913 extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; 914 extern GTY(()) tree gfor_fndecl_math_ishftc4; 915 extern GTY(()) tree gfor_fndecl_math_ishftc8; 916 extern GTY(()) tree gfor_fndecl_math_ishftc16; 917 918 /* BLAS functions. */ 919 extern GTY(()) tree gfor_fndecl_sgemm; 920 extern GTY(()) tree gfor_fndecl_dgemm; 921 extern GTY(()) tree gfor_fndecl_cgemm; 922 extern GTY(()) tree gfor_fndecl_zgemm; 923 924 /* String functions. */ 925 extern GTY(()) tree gfor_fndecl_compare_string; 926 extern GTY(()) tree gfor_fndecl_concat_string; 927 extern GTY(()) tree gfor_fndecl_string_len_trim; 928 extern GTY(()) tree gfor_fndecl_string_index; 929 extern GTY(()) tree gfor_fndecl_string_scan; 930 extern GTY(()) tree gfor_fndecl_string_verify; 931 extern GTY(()) tree gfor_fndecl_string_trim; 932 extern GTY(()) tree gfor_fndecl_string_minmax; 933 extern GTY(()) tree gfor_fndecl_adjustl; 934 extern GTY(()) tree gfor_fndecl_adjustr; 935 extern GTY(()) tree gfor_fndecl_select_string; 936 extern GTY(()) tree gfor_fndecl_compare_string_char4; 937 extern GTY(()) tree gfor_fndecl_concat_string_char4; 938 extern GTY(()) tree gfor_fndecl_string_len_trim_char4; 939 extern GTY(()) tree gfor_fndecl_string_index_char4; 940 extern GTY(()) tree gfor_fndecl_string_scan_char4; 941 extern GTY(()) tree gfor_fndecl_string_verify_char4; 942 extern GTY(()) tree gfor_fndecl_string_trim_char4; 943 extern GTY(()) tree gfor_fndecl_string_minmax_char4; 944 extern GTY(()) tree gfor_fndecl_adjustl_char4; 945 extern GTY(()) tree gfor_fndecl_adjustr_char4; 946 extern GTY(()) tree gfor_fndecl_select_string_char4; 947 948 /* Conversion between character kinds. */ 949 extern GTY(()) tree gfor_fndecl_convert_char1_to_char4; 950 extern GTY(()) tree gfor_fndecl_convert_char4_to_char1; 951 952 /* Other misc. runtime library functions. */ 953 extern GTY(()) tree gfor_fndecl_iargc; 954 extern GTY(()) tree gfor_fndecl_kill; 955 extern GTY(()) tree gfor_fndecl_kill_sub; 956 extern GTY(()) tree gfor_fndecl_is_contiguous0; 957 958 /* Implemented in Fortran. */ 959 extern GTY(()) tree gfor_fndecl_sc_kind; 960 extern GTY(()) tree gfor_fndecl_si_kind; 961 extern GTY(()) tree gfor_fndecl_sr_kind; 962 963 /* IEEE-related. */ 964 extern GTY(()) tree gfor_fndecl_ieee_procedure_entry; 965 extern GTY(()) tree gfor_fndecl_ieee_procedure_exit; 966 967 /* RANDOM_INIT. */ 968 extern GTY(()) tree gfor_fndecl_random_init; 969 extern GTY(()) tree gfor_fndecl_caf_random_init; 970 971 /* True if node is an integer constant. */ 972 #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) 973 974 /* gfortran-specific declaration information, the _CONT versions denote 975 arrays with CONTIGUOUS attribute. */ 976 977 #define GFC_DTYPE_ELEM_LEN 0 978 #define GFC_DTYPE_VERSION 1 979 #define GFC_DTYPE_RANK 2 980 #define GFC_DTYPE_TYPE 3 981 #define GFC_DTYPE_ATTRIBUTE 4 982 983 enum gfc_array_kind 984 { 985 GFC_ARRAY_UNKNOWN, 986 GFC_ARRAY_ASSUMED_SHAPE, 987 GFC_ARRAY_ASSUMED_SHAPE_CONT, 988 GFC_ARRAY_ASSUMED_RANK, 989 GFC_ARRAY_ASSUMED_RANK_CONT, 990 GFC_ARRAY_ALLOCATABLE, 991 GFC_ARRAY_POINTER, 992 GFC_ARRAY_POINTER_CONT 993 }; 994 995 /* Array types only. */ 996 struct GTY(()) lang_type { 997 int rank, corank; 998 enum gfc_array_kind akind; 999 tree lbound[GFC_MAX_DIMENSIONS]; 1000 tree ubound[GFC_MAX_DIMENSIONS]; 1001 tree stride[GFC_MAX_DIMENSIONS]; 1002 tree size; 1003 tree offset; 1004 tree dtype; 1005 tree dataptr_type; 1006 tree base_decl[2]; 1007 tree nonrestricted_type; 1008 tree caf_token; 1009 tree caf_offset; 1010 }; 1011 1012 struct GTY(()) lang_decl { 1013 /* Dummy variables. */ 1014 tree saved_descriptor; 1015 /* Assigned integer nodes. Stringlength is the IO format string's length. 1016 Addr is the address of the string or the target label. Stringlength is 1017 initialized to -2 and assigned to -1 when addr is assigned to the 1018 address of target label. */ 1019 tree stringlen; 1020 tree addr; 1021 /* For assumed-shape coarrays. */ 1022 tree token, caf_offset; 1023 unsigned int scalar_allocatable : 1; 1024 unsigned int scalar_pointer : 1; 1025 unsigned int scalar_target : 1; 1026 unsigned int optional_arg : 1; 1027 }; 1028 1029 1030 #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr 1031 #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen 1032 #define GFC_DECL_TOKEN(node) DECL_LANG_SPECIFIC(node)->token 1033 #define GFC_DECL_CAF_OFFSET(node) DECL_LANG_SPECIFIC(node)->caf_offset 1034 #define GFC_DECL_SAVED_DESCRIPTOR(node) \ 1035 (DECL_LANG_SPECIFIC(node)->saved_descriptor) 1036 #define GFC_DECL_SCALAR_ALLOCATABLE(node) \ 1037 (DECL_LANG_SPECIFIC (node)->scalar_allocatable) 1038 #define GFC_DECL_SCALAR_POINTER(node) \ 1039 (DECL_LANG_SPECIFIC (node)->scalar_pointer) 1040 #define GFC_DECL_SCALAR_TARGET(node) \ 1041 (DECL_LANG_SPECIFIC (node)->scalar_target) 1042 #define GFC_DECL_OPTIONAL_ARGUMENT(node) \ 1043 (DECL_LANG_SPECIFIC (node)->optional_arg) 1044 #define GFC_DECL_GET_SCALAR_ALLOCATABLE(node) \ 1045 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_ALLOCATABLE (node) : 0) 1046 #define GFC_DECL_GET_SCALAR_POINTER(node) \ 1047 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_POINTER (node) : 0) 1048 #define GFC_DECL_GET_SCALAR_TARGET(node) \ 1049 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_TARGET (node) : 0) 1050 #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) 1051 #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) 1052 #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) 1053 #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) 1054 #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) 1055 #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) 1056 #define GFC_DECL_PTR_ARRAY_P(node) DECL_LANG_FLAG_6(node) 1057 #define GFC_DECL_ASSOCIATE_VAR_P(node) DECL_LANG_FLAG_7(node) 1058 #define GFC_DECL_CLASS(node) DECL_LANG_FLAG_8(node) 1059 1060 /* An array descriptor. */ 1061 #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) 1062 /* An array without a descriptor. */ 1063 #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) 1064 /* Fortran CLASS type. */ 1065 #define GFC_CLASS_TYPE_P(node) TYPE_LANG_FLAG_4(node) 1066 /* The GFC_TYPE_ARRAY_* members are present in both descriptor and 1067 descriptorless array types. */ 1068 #define GFC_TYPE_ARRAY_LBOUND(node, dim) \ 1069 (TYPE_LANG_SPECIFIC(node)->lbound[dim]) 1070 #define GFC_TYPE_ARRAY_UBOUND(node, dim) \ 1071 (TYPE_LANG_SPECIFIC(node)->ubound[dim]) 1072 #define GFC_TYPE_ARRAY_STRIDE(node, dim) \ 1073 (TYPE_LANG_SPECIFIC(node)->stride[dim]) 1074 #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) 1075 #define GFC_TYPE_ARRAY_CORANK(node) (TYPE_LANG_SPECIFIC(node)->corank) 1076 #define GFC_TYPE_ARRAY_CAF_TOKEN(node) (TYPE_LANG_SPECIFIC(node)->caf_token) 1077 #define GFC_TYPE_ARRAY_CAF_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->caf_offset) 1078 #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) 1079 #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) 1080 #define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind) 1081 /* Code should use gfc_get_dtype instead of accessing this directly. It may 1082 not be known when the type is created. */ 1083 #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) 1084 #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ 1085 (TYPE_LANG_SPECIFIC(node)->dataptr_type) 1086 #define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \ 1087 (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)]) 1088 1089 1090 /* Build an expression with void type. */ 1091 #define build1_v(code, arg) \ 1092 fold_build1_loc (input_location, code, void_type_node, arg) 1093 #define build2_v(code, arg1, arg2) \ 1094 fold_build2_loc (input_location, code, void_type_node, arg1, arg2) 1095 #define build3_v(code, arg1, arg2, arg3) \ 1096 fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3) 1097 #define build4_v(code, arg1, arg2, arg3, arg4) \ 1098 build4_loc (input_location, code, void_type_node, arg1, arg2, \ 1099 arg3, arg4) 1100 1101 /* This group of functions allows a caller to evaluate an expression from 1102 the callee's interface. It establishes a mapping between the interface's 1103 dummy arguments and the caller's actual arguments, then applies that 1104 mapping to a given gfc_expr. 1105 1106 You can initialize a mapping structure like so: 1107 1108 gfc_interface_mapping mapping; 1109 ... 1110 gfc_init_interface_mapping (&mapping); 1111 1112 You should then evaluate each actual argument into a temporary 1113 gfc_se structure, here called "se", and map the result to the 1114 dummy argument's symbol, here called "sym": 1115 1116 gfc_add_interface_mapping (&mapping, sym, &se); 1117 1118 After adding all mappings, you should call: 1119 1120 gfc_finish_interface_mapping (&mapping, pre, post); 1121 1122 where "pre" and "post" are statement blocks for initialization 1123 and finalization code respectively. You can then evaluate an 1124 interface expression "expr" as follows: 1125 1126 gfc_apply_interface_mapping (&mapping, se, expr); 1127 1128 Once you've evaluated all expressions, you should free 1129 the mapping structure with: 1130 1131 gfc_free_interface_mapping (&mapping); */ 1132 1133 1134 /* This structure represents a mapping from OLD to NEW, where OLD is a 1135 dummy argument symbol and NEW is a symbol that represents the value 1136 of an actual argument. Mappings are linked together using NEXT 1137 (in no particular order). */ 1138 typedef struct gfc_interface_sym_mapping 1139 { 1140 struct gfc_interface_sym_mapping *next; 1141 gfc_symbol *old; 1142 gfc_symtree *new_sym; 1143 gfc_expr *expr; 1144 } 1145 gfc_interface_sym_mapping; 1146 1147 1148 /* This structure is used by callers to evaluate an expression from 1149 a callee's interface. */ 1150 typedef struct gfc_interface_mapping 1151 { 1152 /* Maps the interface's dummy arguments to the values that the caller 1153 is passing. The whole list is owned by this gfc_interface_mapping. */ 1154 gfc_interface_sym_mapping *syms; 1155 1156 /* A list of gfc_charlens that were needed when creating copies of 1157 expressions. The whole list is owned by this gfc_interface_mapping. */ 1158 gfc_charlen *charlens; 1159 } 1160 gfc_interface_mapping; 1161 1162 void gfc_init_interface_mapping (gfc_interface_mapping *); 1163 void gfc_free_interface_mapping (gfc_interface_mapping *); 1164 void gfc_add_interface_mapping (gfc_interface_mapping *, 1165 gfc_symbol *, gfc_se *, gfc_expr *); 1166 void gfc_apply_interface_mapping (gfc_interface_mapping *, 1167 gfc_se *, gfc_expr *); 1168 1169 1170 /* Standard error messages used in all the trans-*.c files. */ 1171 extern const char gfc_msg_fault[]; 1172 1173 #define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */ 1174 #define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare 1175 construct is not workshared. */ 1176 #define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt 1177 to create parallel loops. */ 1178 #define OMPWS_SCALARIZER_BODY 8 /* Set if handling body of potential 1179 parallel loop. */ 1180 #define OMPWS_NOWAIT 16 /* Use NOWAIT on OMP_FOR. */ 1181 extern int ompws_flags; 1182 1183 #endif /* GFC_TRANS_H */ 1184