1 /* Header for code translation functions 2 Copyright (C) 2002-2020 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 /* If set gfc_conv_variable will return an expression for the array 57 descriptor. When set, want_pointer should also be set. 58 If not set scalarizing variables will be substituted. */ 59 unsigned descriptor_only:1; 60 61 /* When this is set gfc_conv_expr returns the address of a variable. Only 62 applies to EXPR_VARIABLE nodes. 63 Also used by gfc_conv_array_parameter. When set this indicates a pointer 64 to the descriptor should be returned, rather than the descriptor itself. 65 */ 66 unsigned want_pointer:1; 67 68 /* An array function call returning without a temporary. Also used for array 69 pointer assignments. */ 70 unsigned direct_byref:1; 71 72 /* If direct_byref is set, do work out the descriptor as in that case but 73 do still create a new descriptor variable instead of using an 74 existing one. This is useful for special pointer assignments like 75 rank remapping where we have to process the descriptor before 76 assigning to final one. */ 77 unsigned byref_noassign:1; 78 79 /* Ignore absent optional arguments. Used for some intrinsics. */ 80 unsigned ignore_optional:1; 81 82 /* When this is set the data and offset fields of the returned descriptor 83 are NULL. Used by intrinsic size. */ 84 unsigned data_not_needed:1; 85 86 /* If set, gfc_conv_procedure_call does not put byref calls into se->pre. */ 87 unsigned no_function_call:1; 88 89 /* If set, we will force the creation of a temporary. Useful to disable 90 non-copying procedure argument passing optimizations, when some function 91 args alias. */ 92 unsigned force_tmp:1; 93 94 /* If set, will pass subref descriptors without a temporary. */ 95 unsigned force_no_tmp:1; 96 97 /* Unconditionally calculate offset for array segments and constant 98 arrays in gfc_conv_expr_descriptor. */ 99 unsigned use_offset:1; 100 101 unsigned want_coarray:1; 102 103 /* Scalarization parameters. */ 104 struct gfc_se *parent; 105 struct gfc_ss *ss; 106 struct gfc_loopinfo *loop; 107 } 108 gfc_se; 109 110 typedef struct gfc_co_subroutines_args 111 { 112 tree image_index; 113 tree stat; 114 tree errmsg; 115 tree errmsg_len; 116 } 117 gfc_co_subroutines_args; 118 119 /* Denotes different types of coarray. 120 Please keep in sync with libgfortran/caf/libcaf.h. */ 121 enum gfc_coarray_regtype 122 { 123 GFC_CAF_COARRAY_STATIC, 124 GFC_CAF_COARRAY_ALLOC, 125 GFC_CAF_LOCK_STATIC, 126 GFC_CAF_LOCK_ALLOC, 127 GFC_CAF_CRITICAL, 128 GFC_CAF_EVENT_STATIC, 129 GFC_CAF_EVENT_ALLOC, 130 GFC_CAF_COARRAY_ALLOC_REGISTER_ONLY, 131 GFC_CAF_COARRAY_ALLOC_ALLOCATE_ONLY 132 }; 133 134 135 /* Describes the action to take on _caf_deregister. Keep in sync with 136 gcc/fortran/trans.h. The negative values are not valid for the library and 137 are used by the drivers for building the correct call. */ 138 enum gfc_coarray_deregtype { 139 /* This is no coarray, i.e. build a call to a free (). */ 140 GFC_CAF_COARRAY_NOCOARRAY = -2, 141 /* The driver is to analyze which _caf_deregister ()-call to generate. */ 142 GFC_CAF_COARRAY_ANALYZE = -1, 143 GFC_CAF_COARRAY_DEREGISTER = 0, 144 GFC_CAF_COARRAY_DEALLOCATE_ONLY 145 }; 146 147 148 /* Specify the type of ref handed to the caf communication functions. 149 Please keep in sync with libgfortran/caf/libcaf.h. */ 150 enum gfc_caf_ref_type_t { 151 GFC_CAF_REF_COMPONENT, 152 GFC_CAF_REF_ARRAY, 153 GFC_CAF_REF_STATIC_ARRAY 154 }; 155 156 157 /* Give the reference type of an array ref. 158 Please keep in sync with libgfortran/caf/libcaf.h. */ 159 enum gfc_caf_array_ref_t { 160 GFC_CAF_ARR_REF_NONE = 0, 161 GFC_CAF_ARR_REF_VECTOR, 162 GFC_CAF_ARR_REF_FULL, 163 GFC_CAF_ARR_REF_RANGE, 164 GFC_CAF_ARR_REF_SINGLE, 165 GFC_CAF_ARR_REF_OPEN_END, 166 GFC_CAF_ARR_REF_OPEN_START 167 }; 168 169 170 /* trans-array (structure_alloc_comps) caf_mode bits. */ 171 enum gfc_structure_caf_mode_t { 172 GFC_STRUCTURE_CAF_MODE_ENABLE_COARRAY = 1 << 0, 173 GFC_STRUCTURE_CAF_MODE_IN_COARRAY = 1 << 1, 174 GFC_STRUCTURE_CAF_MODE_DEALLOC_ONLY = 1 << 2 175 }; 176 177 178 /* The array-specific scalarization information. The array members of 179 this struct are indexed by actual array index, and thus can be sparse. */ 180 181 typedef struct gfc_array_info 182 { 183 mpz_t *shape; 184 185 /* The ref that holds information on this section. */ 186 gfc_ref *ref; 187 /* The descriptor of this array. */ 188 tree descriptor; 189 /* holds the pointer to the data array. */ 190 tree data; 191 /* To move some of the array index calculation out of the innermost loop. */ 192 tree offset; 193 tree saved_offset; 194 tree stride0; 195 /* Holds the SS for a subscript. Indexed by actual dimension. */ 196 struct gfc_ss *subscript[GFC_MAX_DIMENSIONS]; 197 198 /* stride and delta are used to access this inside a scalarization loop. 199 start is used in the calculation of these. Indexed by scalarizer 200 dimension. */ 201 tree start[GFC_MAX_DIMENSIONS]; 202 tree end[GFC_MAX_DIMENSIONS]; 203 tree stride[GFC_MAX_DIMENSIONS]; 204 tree delta[GFC_MAX_DIMENSIONS]; 205 } 206 gfc_array_info; 207 208 enum gfc_ss_type 209 { 210 /* A scalar value. This will be evaluated before entering the 211 scalarization loop. */ 212 GFC_SS_SCALAR, 213 214 /* Like GFC_SS_SCALAR it evaluates the expression outside the 215 loop. Is always evaluated as a reference to the temporary, unless 216 temporary evaluation can result in a NULL pointer dereferencing (case of 217 optional arguments). Used for elemental function arguments. */ 218 GFC_SS_REFERENCE, 219 220 /* An array section. Scalarization indices will be substituted during 221 expression translation. */ 222 GFC_SS_SECTION, 223 224 /* A non-elemental function call returning an array. The call is executed 225 before entering the scalarization loop, storing the result in a 226 temporary. This temporary is then used inside the scalarization loop. 227 Simple assignments, e.g. a(:) = fn(), are handled without a temporary 228 as a special case. */ 229 GFC_SS_FUNCTION, 230 231 /* An array constructor. The current implementation is sub-optimal in 232 many cases. It allocated a temporary, assigns the values to it, then 233 uses this temporary inside the scalarization loop. */ 234 GFC_SS_CONSTRUCTOR, 235 236 /* A vector subscript. The vector's descriptor is cached in the 237 "descriptor" field of the associated gfc_ss_info. */ 238 GFC_SS_VECTOR, 239 240 /* A temporary array allocated by the scalarizer. Its rank can be less 241 than that of the assignment expression. */ 242 GFC_SS_TEMP, 243 244 /* An intrinsic function call. Many intrinsic functions which map directly 245 to library calls are created as GFC_SS_FUNCTION nodes. */ 246 GFC_SS_INTRINSIC, 247 248 /* A component of a derived type. */ 249 GFC_SS_COMPONENT 250 }; 251 252 253 typedef struct gfc_ss_info 254 { 255 int refcount; 256 gfc_ss_type type; 257 gfc_expr *expr; 258 tree string_length; 259 260 union 261 { 262 /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */ 263 struct 264 { 265 /* If the scalar is passed as actual argument to an (elemental) procedure, 266 this is the symbol of the corresponding dummy argument. */ 267 gfc_symbol *dummy_arg; 268 tree value; 269 /* Tells that the scalar is a reference to a variable that might 270 be present on the lhs, so that we should evaluate the value 271 itself before the loop, not just the reference. */ 272 unsigned needs_temporary:1; 273 } 274 scalar; 275 276 /* GFC_SS_TEMP. */ 277 struct 278 { 279 tree type; 280 } 281 temp; 282 283 /* All other types. */ 284 gfc_array_info array; 285 } 286 data; 287 288 /* This is used by assignments requiring temporaries. The bits specify which 289 loops the terms appear in. This will be 1 for the RHS expressions, 290 2 for the LHS expressions, and 3(=1|2) for the temporary. */ 291 unsigned useflags:2; 292 293 /* Suppresses precalculation of scalars in WHERE assignments. */ 294 unsigned where:1; 295 296 /* This set for an elemental function that contains expressions for 297 external arrays, thereby triggering creation of a temporary. */ 298 unsigned array_outer_dependency:1; 299 300 /* Tells whether the SS is for an actual argument which can be a NULL 301 reference. In other words, the associated dummy argument is OPTIONAL. 302 Used to handle elemental procedures. */ 303 bool can_be_null_ref; 304 } 305 gfc_ss_info; 306 307 #define gfc_get_ss_info() XCNEW (gfc_ss_info) 308 309 310 /* Scalarization State chain. Created by walking an expression tree before 311 creating the scalarization loops. Then passed as part of a gfc_se structure 312 to translate the expression inside the loop. Note that these chains are 313 terminated by gfc_ss_terminator, not NULL. A NULL pointer in a gfc_se 314 indicates to gfc_conv_* that this is a scalar expression. 315 SS structures can only belong to a single loopinfo. They must be added 316 otherwise they will not get freed. */ 317 318 typedef struct gfc_ss 319 { 320 gfc_ss_info *info; 321 322 int dimen; 323 /* Translation from loop dimensions to actual array dimensions. 324 actual_dim = dim[loop_dim] */ 325 int dim[GFC_MAX_DIMENSIONS]; 326 327 /* All the SS in a loop and linked through loop_chain. The SS for an 328 expression are linked by the next pointer. */ 329 struct gfc_ss *loop_chain; 330 struct gfc_ss *next; 331 332 /* Non-null if the ss is part of a nested loop. */ 333 struct gfc_ss *parent; 334 335 /* If the evaluation of an expression requires a nested loop (for example 336 if the sum intrinsic is evaluated inline), this points to the nested 337 loop's gfc_ss. */ 338 struct gfc_ss *nested_ss; 339 340 /* The loop this gfc_ss is in. */ 341 struct gfc_loopinfo *loop; 342 343 unsigned is_alloc_lhs:1; 344 unsigned no_bounds_check:1; 345 } 346 gfc_ss; 347 #define gfc_get_ss() XCNEW (gfc_ss) 348 349 /* The contents of this aren't actually used. A NULL SS chain indicates a 350 scalar expression, so this pointer is used to terminate SS chains. */ 351 extern gfc_ss * const gfc_ss_terminator; 352 353 /* Holds information about an expression while it is being scalarized. */ 354 typedef struct gfc_loopinfo 355 { 356 stmtblock_t pre; 357 stmtblock_t post; 358 359 int dimen; 360 361 /* All the SS involved with this loop. */ 362 gfc_ss *ss; 363 /* The SS describing the temporary used in an assignment. */ 364 gfc_ss *temp_ss; 365 366 /* Non-null if this loop is nested in another one. */ 367 struct gfc_loopinfo *parent; 368 369 /* Chain of nested loops. */ 370 struct gfc_loopinfo *nested, *next; 371 372 /* The scalarization loop index variables. */ 373 tree loopvar[GFC_MAX_DIMENSIONS]; 374 375 /* The bounds of the scalarization loops. */ 376 tree from[GFC_MAX_DIMENSIONS]; 377 tree to[GFC_MAX_DIMENSIONS]; 378 gfc_ss *specloop[GFC_MAX_DIMENSIONS]; 379 380 /* The code member contains the code for the body of the next outer loop. */ 381 stmtblock_t code[GFC_MAX_DIMENSIONS]; 382 383 /* Order in which the dimensions should be looped, innermost first. */ 384 int order[GFC_MAX_DIMENSIONS]; 385 386 /* Enum to control loop reversal. */ 387 gfc_reverse reverse[GFC_MAX_DIMENSIONS]; 388 389 /* The number of dimensions for which a temporary is used. */ 390 int temp_dim; 391 392 /* If set we don't need the loop variables. */ 393 unsigned array_parameter:1; 394 } 395 gfc_loopinfo; 396 397 #define gfc_get_loopinfo() XCNEW (gfc_loopinfo) 398 399 /* Information about a symbol that has been shadowed by a temporary. */ 400 typedef struct 401 { 402 symbol_attribute attr; 403 tree decl; 404 } 405 gfc_saved_var; 406 407 408 /* Store information about a block of code together with special 409 initialization and clean-up code. This can be used to incrementally add 410 init and cleanup, and in the end put everything together to a 411 try-finally expression. */ 412 typedef struct 413 { 414 tree init; 415 tree cleanup; 416 tree code; 417 } 418 gfc_wrapped_block; 419 420 /* Class API functions. */ 421 tree gfc_class_set_static_fields (tree, tree, tree); 422 tree gfc_class_data_get (tree); 423 tree gfc_class_vptr_get (tree); 424 tree gfc_class_len_get (tree); 425 tree gfc_class_len_or_zero_get (tree); 426 tree gfc_resize_class_size_with_len (stmtblock_t *, tree, tree); 427 gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *, bool is_mold = false); 428 /* Get an accessor to the class' vtab's * field, when a class handle is 429 available. */ 430 tree gfc_class_vtab_hash_get (tree); 431 tree gfc_class_vtab_size_get (tree); 432 tree gfc_class_vtab_extends_get (tree); 433 tree gfc_class_vtab_def_init_get (tree); 434 tree gfc_class_vtab_copy_get (tree); 435 tree gfc_class_vtab_final_get (tree); 436 /* Get an accessor to the vtab's * field, when a vptr handle is present. */ 437 tree gfc_vtpr_hash_get (tree); 438 tree gfc_vptr_size_get (tree); 439 tree gfc_vptr_extends_get (tree); 440 tree gfc_vptr_def_init_get (tree); 441 tree gfc_vptr_copy_get (tree); 442 tree gfc_vptr_final_get (tree); 443 tree gfc_vptr_deallocate_get (tree); 444 void gfc_reset_vptr (stmtblock_t *, gfc_expr *); 445 void gfc_reset_len (stmtblock_t *, gfc_expr *); 446 tree gfc_get_class_from_gfc_expr (gfc_expr *); 447 tree gfc_get_class_from_expr (tree); 448 tree gfc_get_vptr_from_expr (tree); 449 tree gfc_get_class_array_ref (tree, tree, tree, bool); 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); 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.c 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 bool add_clobber = false); 504 void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); 505 506 507 /* trans-expr.c */ 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 void gfc_conv_scalar_char_value (gfc_symbol *sym, gfc_se *se, gfc_expr **expr); 511 tree gfc_string_to_single_character (tree len, tree str, int kind); 512 tree gfc_get_tree_for_caf_expr (gfc_expr *); 513 void gfc_get_caf_token_offset (gfc_se*, tree *, tree *, tree, tree, gfc_expr *); 514 tree gfc_caf_get_image_index (stmtblock_t *, gfc_expr *, tree); 515 516 /* Find the decl containing the auxiliary variables for assigned variables. */ 517 void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); 518 /* If the value is not constant, Create a temporary and copy the value. */ 519 tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *); 520 tree gfc_evaluate_now (tree, stmtblock_t *); 521 tree gfc_evaluate_now_function_scope (tree, stmtblock_t *); 522 523 /* Find the appropriate variant of a math intrinsic. */ 524 tree gfc_builtin_decl_for_float_kind (enum built_in_function, int); 525 526 tree size_of_string_in_bytes (int, tree); 527 528 /* Intrinsic procedure handling. */ 529 tree gfc_conv_intrinsic_subroutine (gfc_code *); 530 void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); 531 bool gfc_conv_ieee_arithmetic_function (gfc_se *, gfc_expr *); 532 tree gfc_save_fp_state (stmtblock_t *); 533 void gfc_restore_fp_state (stmtblock_t *, tree); 534 535 bool gfc_expr_is_variable (gfc_expr *); 536 537 /* Does an intrinsic map directly to an external library call 538 This is true for array-returning intrinsics, unless 539 gfc_inline_intrinsic_function_p returns true. */ 540 int gfc_is_intrinsic_libcall (gfc_expr *); 541 542 /* Used to call ordinary functions/subroutines 543 and procedure pointer components. */ 544 int gfc_conv_procedure_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *, 545 gfc_expr *, vec<tree, va_gc> *); 546 547 void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent, bool, 548 const gfc_symbol *fsym = NULL, 549 const char *proc_name = NULL, 550 gfc_symbol *sym = NULL, 551 bool check_contiguous = false); 552 553 void gfc_conv_is_contiguous_expr (gfc_se *, gfc_expr *); 554 555 /* Generate code for a scalar assignment. */ 556 tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool, 557 bool c = false); 558 559 /* Translate COMMON blocks. */ 560 void gfc_trans_common (gfc_namespace *); 561 562 /* Translate a derived type constructor. */ 563 void gfc_conv_structure (gfc_se *, gfc_expr *, int); 564 565 /* Return an expression which determines if a dummy parameter is present. */ 566 tree gfc_conv_expr_present (gfc_symbol *, bool use_saved_decl = false); 567 /* Convert a missing, dummy argument into a null or zero. */ 568 void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec, int); 569 570 /* Lowering of component references. */ 571 void gfc_conv_component_ref (gfc_se * se, gfc_ref * ref); 572 void conv_parent_component_references (gfc_se * se, gfc_ref * ref); 573 574 /* Automatically dereference var. */ 575 tree gfc_maybe_dereference_var (gfc_symbol *, tree, bool desc_only = false, 576 bool is_classarray = false); 577 578 /* Generate code to allocate a string temporary. */ 579 tree gfc_conv_string_tmp (gfc_se *, tree, tree); 580 /* Get the string length variable belonging to an expression. */ 581 tree gfc_get_expr_charlen (gfc_expr *); 582 /* Initialize a string length variable. */ 583 void gfc_conv_string_length (gfc_charlen *, gfc_expr *, stmtblock_t *); 584 /* Ensure type sizes can be gimplified. */ 585 void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); 586 587 /* Add an expression to the end of a block. */ 588 void gfc_add_expr_to_block (stmtblock_t *, tree); 589 /* Add an expression to the beginning of a block. */ 590 void gfc_prepend_expr_to_block (stmtblock_t *, tree); 591 /* Add a block to the end of a block. */ 592 void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); 593 /* Add a MODIFY_EXPR to a block. */ 594 void gfc_add_modify_loc (location_t, stmtblock_t *, tree, tree); 595 void gfc_add_modify (stmtblock_t *, tree, tree); 596 597 /* Initialize a statement block. */ 598 void gfc_init_block (stmtblock_t *); 599 /* Start a new statement block. Like gfc_init_block but also starts a new 600 variable scope. */ 601 void gfc_start_block (stmtblock_t *); 602 /* Finish a statement block. Also closes the scope if the block was created 603 with gfc_start_block. */ 604 tree gfc_finish_block (stmtblock_t *); 605 /* Merge the scope of a block with its parent. */ 606 void gfc_merge_block_scope (stmtblock_t * block); 607 608 /* Return the backend label decl. */ 609 tree gfc_get_label_decl (gfc_st_label *); 610 611 /* Return the decl for an external function. */ 612 tree gfc_get_extern_function_decl (gfc_symbol *, 613 gfc_actual_arglist *args = NULL); 614 615 /* Return the decl for a function. */ 616 tree gfc_get_function_decl (gfc_symbol *); 617 618 /* Build an ADDR_EXPR. */ 619 tree gfc_build_addr_expr (tree, tree); 620 621 /* Build an ARRAY_REF. */ 622 tree gfc_build_array_ref (tree, tree, tree, tree vptr = NULL_TREE); 623 624 /* Creates a label. Decl is artificial if label_id == NULL_TREE. */ 625 tree gfc_build_label_decl (tree); 626 627 /* Return the decl used to hold the function return value. 628 Do not use if the function has an explicit result variable. */ 629 tree gfc_get_fake_result_decl (gfc_symbol *, int); 630 631 /* Add a decl to the binding level for the current function. */ 632 void gfc_add_decl_to_function (tree); 633 634 /* Make prototypes for runtime library functions. */ 635 void gfc_build_builtin_function_decls (void); 636 637 /* Set the backend source location of a decl. */ 638 void gfc_set_decl_location (tree, locus *); 639 640 /* Get a module symbol backend_decl if possible. */ 641 bool gfc_get_module_backend_decl (gfc_symbol *); 642 643 /* Return the variable decl for a symbol. */ 644 tree gfc_get_symbol_decl (gfc_symbol *); 645 646 /* Build a static initializer. */ 647 tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool, bool); 648 649 /* Assign a default initializer to a derived type. */ 650 void gfc_init_default_dt (gfc_symbol *, stmtblock_t *, bool); 651 652 /* Substitute a temporary variable in place of the real one. */ 653 void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); 654 655 /* Restore the original variable. */ 656 void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); 657 658 /* Setting a decl assembler name, mangling it according to target rules 659 (like Windows @NN decorations). */ 660 void gfc_set_decl_assembler_name (tree, tree); 661 662 /* Returns true if a variable of specified size should go on the stack. */ 663 int gfc_can_put_var_on_stack (tree); 664 665 /* Set GFC_DECL_SCALAR_* on decl from sym if needed. */ 666 void gfc_finish_decl_attrs (tree, symbol_attribute *); 667 668 /* Allocate the lang-specific part of a decl node. */ 669 void gfc_allocate_lang_decl (tree); 670 671 /* Get the location suitable for the ME from a gfortran locus; required to get 672 the column number right. */ 673 location_t gfc_get_location (locus *); 674 675 /* Advance along a TREE_CHAIN. */ 676 tree gfc_advance_chain (tree, int); 677 678 /* Create a decl for a function. */ 679 void gfc_create_function_decl (gfc_namespace *, bool); 680 /* Generate the code for a function. */ 681 void gfc_generate_function_code (gfc_namespace *); 682 /* Output a BLOCK DATA program unit. */ 683 void gfc_generate_block_data (gfc_namespace *); 684 /* Output a decl for a module variable. */ 685 void gfc_generate_module_vars (gfc_namespace *); 686 /* Get the appropriate return statement for a procedure. */ 687 tree gfc_generate_return (void); 688 689 struct module_decl_hasher : ggc_ptr_hash<tree_node> 690 { 691 typedef const char *compare_type; 692 693 static hashval_t hash (tree); 694 static bool equal (tree, const char *); 695 }; 696 697 struct GTY((for_user)) module_htab_entry { 698 const char *name; 699 tree namespace_decl; 700 hash_table<module_decl_hasher> *GTY (()) decls; 701 }; 702 703 struct module_htab_entry *gfc_find_module (const char *); 704 void gfc_module_add_decl (struct module_htab_entry *, tree); 705 706 /* Get and set the current location. */ 707 void gfc_save_backend_locus (locus *); 708 void gfc_set_backend_locus (locus *); 709 void gfc_restore_backend_locus (locus *); 710 711 /* Handle static constructor functions. */ 712 extern GTY(()) tree gfc_static_ctors; 713 void gfc_generate_constructors (void); 714 715 /* Get the string length of an array constructor. */ 716 bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor_base, tree *); 717 718 /* Mark a condition as likely or unlikely. */ 719 tree gfc_likely (tree, enum br_predictor); 720 tree gfc_unlikely (tree, enum br_predictor); 721 722 /* Return the string length of a deferred character length component. */ 723 bool gfc_deferred_strlen (gfc_component *, tree *); 724 725 /* Generate a runtime error call. */ 726 tree gfc_trans_runtime_error (bool, locus*, const char*, ...); 727 728 /* Generate a runtime warning/error check. */ 729 void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *, 730 const char *, ...); 731 732 /* Generate a runtime check for same string length. */ 733 void gfc_trans_same_strlen_check (const char*, locus*, tree, tree, 734 stmtblock_t*); 735 736 /* Generate a call to free(). */ 737 tree gfc_call_free (tree); 738 739 /* Allocate memory after performing a few checks. */ 740 tree gfc_call_malloc (stmtblock_t *, tree, tree); 741 742 /* Build a memcpy call. */ 743 tree gfc_build_memcpy_call (tree, tree, tree); 744 745 /* Register memory with the coarray library. */ 746 void gfc_allocate_using_caf_lib (stmtblock_t *, tree, tree, tree, tree, tree, 747 tree, gfc_coarray_regtype); 748 749 /* Allocate memory for allocatable variables, with optional status variable. */ 750 void gfc_allocate_allocatable (stmtblock_t*, tree, tree, tree, tree, 751 tree, tree, tree, gfc_expr*, int); 752 753 /* Allocate memory, with optional status variable. */ 754 void gfc_allocate_using_malloc (stmtblock_t *, tree, tree, tree); 755 756 /* Generate code to deallocate an array. */ 757 tree gfc_deallocate_with_status (tree, tree, tree, tree, tree, bool, 758 gfc_expr *, int, tree a = NULL_TREE, 759 tree c = NULL_TREE); 760 tree gfc_deallocate_scalar_with_status (tree, tree, tree, bool, gfc_expr*, 761 gfc_typespec, bool c = false); 762 763 /* Generate code to call realloc(). */ 764 tree gfc_call_realloc (stmtblock_t *, tree, tree); 765 766 /* Assign a derived type constructor to a variable. */ 767 tree gfc_trans_structure_assign (tree, gfc_expr *, bool, bool c = false); 768 769 /* Generate code for an assignment, includes scalarization. */ 770 tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool, bool, bool p = false, 771 bool a = true); 772 773 /* Generate code for a pointer assignment. */ 774 tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); 775 776 /* Initialize function decls for library functions. */ 777 void gfc_build_intrinsic_lib_fndecls (void); 778 /* Create function decls for IO library functions. */ 779 void gfc_build_io_library_fndecls (void); 780 /* Build a function decl for a library function. */ 781 tree gfc_build_library_function_decl (tree, tree, int, ...); 782 tree gfc_build_library_function_decl_with_spec (tree name, const char *spec, 783 tree rettype, int nargs, ...); 784 785 /* Process the local variable decls of a block construct. */ 786 void gfc_process_block_locals (gfc_namespace*); 787 788 /* Output initialization/clean-up code that was deferred. */ 789 void gfc_trans_deferred_vars (gfc_symbol*, gfc_wrapped_block *); 790 791 /* In f95-lang.c. */ 792 tree pushdecl (tree); 793 tree pushdecl_top_level (tree); 794 void pushlevel (void); 795 tree poplevel (int, int); 796 tree getdecls (void); 797 798 /* In trans-types.c. */ 799 struct array_descr_info; 800 bool gfc_get_array_descr_info (const_tree, struct array_descr_info *); 801 802 /* In trans-openmp.c */ 803 bool gfc_omp_is_allocatable_or_ptr (const_tree); 804 tree gfc_omp_check_optional_argument (tree, bool); 805 tree gfc_omp_array_data (tree, bool); 806 bool gfc_omp_privatize_by_reference (const_tree); 807 enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); 808 tree gfc_omp_report_decl (tree); 809 tree gfc_omp_clause_default_ctor (tree, tree, tree); 810 tree gfc_omp_clause_copy_ctor (tree, tree, tree); 811 tree gfc_omp_clause_assign_op (tree, tree, tree); 812 tree gfc_omp_clause_linear_ctor (tree, tree, tree, tree); 813 tree gfc_omp_clause_dtor (tree, tree); 814 void gfc_omp_finish_clause (tree, gimple_seq *); 815 bool gfc_omp_scalar_p (tree); 816 bool gfc_omp_disregard_value_expr (tree, bool); 817 bool gfc_omp_private_debug_clause (tree, bool); 818 bool gfc_omp_private_outer_ref (tree); 819 struct gimplify_omp_ctx; 820 void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); 821 822 /* Runtime library function decls. */ 823 extern GTY(()) tree gfor_fndecl_pause_numeric; 824 extern GTY(()) tree gfor_fndecl_pause_string; 825 extern GTY(()) tree gfor_fndecl_stop_numeric; 826 extern GTY(()) tree gfor_fndecl_stop_string; 827 extern GTY(()) tree gfor_fndecl_error_stop_numeric; 828 extern GTY(()) tree gfor_fndecl_error_stop_string; 829 extern GTY(()) tree gfor_fndecl_runtime_error; 830 extern GTY(()) tree gfor_fndecl_runtime_error_at; 831 extern GTY(()) tree gfor_fndecl_runtime_warning_at; 832 extern GTY(()) tree gfor_fndecl_os_error_at; 833 extern GTY(()) tree gfor_fndecl_generate_error; 834 extern GTY(()) tree gfor_fndecl_set_fpe; 835 extern GTY(()) tree gfor_fndecl_set_options; 836 extern GTY(()) tree gfor_fndecl_ttynam; 837 extern GTY(()) tree gfor_fndecl_ctime; 838 extern GTY(()) tree gfor_fndecl_fdate; 839 extern GTY(()) tree gfor_fndecl_in_pack; 840 extern GTY(()) tree gfor_fndecl_in_unpack; 841 extern GTY(()) tree gfor_fndecl_cfi_to_gfc; 842 extern GTY(()) tree gfor_fndecl_gfc_to_cfi; 843 extern GTY(()) tree gfor_fndecl_associated; 844 extern GTY(()) tree gfor_fndecl_system_clock4; 845 extern GTY(()) tree gfor_fndecl_system_clock8; 846 847 848 /* Coarray run-time library function decls. */ 849 extern GTY(()) tree gfor_fndecl_caf_init; 850 extern GTY(()) tree gfor_fndecl_caf_finalize; 851 extern GTY(()) tree gfor_fndecl_caf_this_image; 852 extern GTY(()) tree gfor_fndecl_caf_num_images; 853 extern GTY(()) tree gfor_fndecl_caf_register; 854 extern GTY(()) tree gfor_fndecl_caf_deregister; 855 extern GTY(()) tree gfor_fndecl_caf_get; 856 extern GTY(()) tree gfor_fndecl_caf_send; 857 extern GTY(()) tree gfor_fndecl_caf_sendget; 858 extern GTY(()) tree gfor_fndecl_caf_get_by_ref; 859 extern GTY(()) tree gfor_fndecl_caf_send_by_ref; 860 extern GTY(()) tree gfor_fndecl_caf_sendget_by_ref; 861 extern GTY(()) tree gfor_fndecl_caf_sync_all; 862 extern GTY(()) tree gfor_fndecl_caf_sync_memory; 863 extern GTY(()) tree gfor_fndecl_caf_sync_images; 864 extern GTY(()) tree gfor_fndecl_caf_stop_numeric; 865 extern GTY(()) tree gfor_fndecl_caf_stop_str; 866 extern GTY(()) tree gfor_fndecl_caf_error_stop; 867 extern GTY(()) tree gfor_fndecl_caf_error_stop_str; 868 extern GTY(()) tree gfor_fndecl_caf_atomic_def; 869 extern GTY(()) tree gfor_fndecl_caf_atomic_ref; 870 extern GTY(()) tree gfor_fndecl_caf_atomic_cas; 871 extern GTY(()) tree gfor_fndecl_caf_atomic_op; 872 extern GTY(()) tree gfor_fndecl_caf_lock; 873 extern GTY(()) tree gfor_fndecl_caf_unlock; 874 extern GTY(()) tree gfor_fndecl_caf_event_post; 875 extern GTY(()) tree gfor_fndecl_caf_event_wait; 876 extern GTY(()) tree gfor_fndecl_caf_event_query; 877 extern GTY(()) tree gfor_fndecl_caf_fail_image; 878 extern GTY(()) tree gfor_fndecl_caf_failed_images; 879 extern GTY(()) tree gfor_fndecl_caf_image_status; 880 extern GTY(()) tree gfor_fndecl_caf_stopped_images; 881 extern GTY(()) tree gfor_fndecl_caf_form_team; 882 extern GTY(()) tree gfor_fndecl_caf_change_team; 883 extern GTY(()) tree gfor_fndecl_caf_end_team; 884 extern GTY(()) tree gfor_fndecl_caf_get_team; 885 extern GTY(()) tree gfor_fndecl_caf_sync_team; 886 extern GTY(()) tree gfor_fndecl_caf_team_number; 887 extern GTY(()) tree gfor_fndecl_co_broadcast; 888 extern GTY(()) tree gfor_fndecl_co_max; 889 extern GTY(()) tree gfor_fndecl_co_min; 890 extern GTY(()) tree gfor_fndecl_co_reduce; 891 extern GTY(()) tree gfor_fndecl_co_sum; 892 extern GTY(()) tree gfor_fndecl_caf_is_present; 893 894 /* Math functions. Many other math functions are handled in 895 trans-intrinsic.c. */ 896 897 typedef struct GTY(()) gfc_powdecl_list { 898 tree integer; 899 tree real; 900 tree cmplx; 901 } 902 gfc_powdecl_list; 903 904 extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; 905 extern GTY(()) tree gfor_fndecl_math_ishftc4; 906 extern GTY(()) tree gfor_fndecl_math_ishftc8; 907 extern GTY(()) tree gfor_fndecl_math_ishftc16; 908 909 /* BLAS functions. */ 910 extern GTY(()) tree gfor_fndecl_sgemm; 911 extern GTY(()) tree gfor_fndecl_dgemm; 912 extern GTY(()) tree gfor_fndecl_cgemm; 913 extern GTY(()) tree gfor_fndecl_zgemm; 914 915 /* String functions. */ 916 extern GTY(()) tree gfor_fndecl_compare_string; 917 extern GTY(()) tree gfor_fndecl_concat_string; 918 extern GTY(()) tree gfor_fndecl_string_len_trim; 919 extern GTY(()) tree gfor_fndecl_string_index; 920 extern GTY(()) tree gfor_fndecl_string_scan; 921 extern GTY(()) tree gfor_fndecl_string_verify; 922 extern GTY(()) tree gfor_fndecl_string_trim; 923 extern GTY(()) tree gfor_fndecl_string_minmax; 924 extern GTY(()) tree gfor_fndecl_adjustl; 925 extern GTY(()) tree gfor_fndecl_adjustr; 926 extern GTY(()) tree gfor_fndecl_select_string; 927 extern GTY(()) tree gfor_fndecl_compare_string_char4; 928 extern GTY(()) tree gfor_fndecl_concat_string_char4; 929 extern GTY(()) tree gfor_fndecl_string_len_trim_char4; 930 extern GTY(()) tree gfor_fndecl_string_index_char4; 931 extern GTY(()) tree gfor_fndecl_string_scan_char4; 932 extern GTY(()) tree gfor_fndecl_string_verify_char4; 933 extern GTY(()) tree gfor_fndecl_string_trim_char4; 934 extern GTY(()) tree gfor_fndecl_string_minmax_char4; 935 extern GTY(()) tree gfor_fndecl_adjustl_char4; 936 extern GTY(()) tree gfor_fndecl_adjustr_char4; 937 extern GTY(()) tree gfor_fndecl_select_string_char4; 938 939 /* Conversion between character kinds. */ 940 extern GTY(()) tree gfor_fndecl_convert_char1_to_char4; 941 extern GTY(()) tree gfor_fndecl_convert_char4_to_char1; 942 943 /* Other misc. runtime library functions. */ 944 extern GTY(()) tree gfor_fndecl_size0; 945 extern GTY(()) tree gfor_fndecl_size1; 946 extern GTY(()) tree gfor_fndecl_iargc; 947 extern GTY(()) tree gfor_fndecl_kill; 948 extern GTY(()) tree gfor_fndecl_kill_sub; 949 extern GTY(()) tree gfor_fndecl_is_contiguous0; 950 951 /* Implemented in Fortran. */ 952 extern GTY(()) tree gfor_fndecl_sc_kind; 953 extern GTY(()) tree gfor_fndecl_si_kind; 954 extern GTY(()) tree gfor_fndecl_sr_kind; 955 956 /* IEEE-related. */ 957 extern GTY(()) tree gfor_fndecl_ieee_procedure_entry; 958 extern GTY(()) tree gfor_fndecl_ieee_procedure_exit; 959 960 /* RANDOM_INIT. */ 961 extern GTY(()) tree gfor_fndecl_random_init; 962 963 /* True if node is an integer constant. */ 964 #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) 965 966 /* gfortran-specific declaration information, the _CONT versions denote 967 arrays with CONTIGUOUS attribute. */ 968 969 #define GFC_DTYPE_ELEM_LEN 0 970 #define GFC_DTYPE_VERSION 1 971 #define GFC_DTYPE_RANK 2 972 #define GFC_DTYPE_TYPE 3 973 #define GFC_DTYPE_ATTRIBUTE 4 974 975 enum gfc_array_kind 976 { 977 GFC_ARRAY_UNKNOWN, 978 GFC_ARRAY_ASSUMED_SHAPE, 979 GFC_ARRAY_ASSUMED_SHAPE_CONT, 980 GFC_ARRAY_ASSUMED_RANK, 981 GFC_ARRAY_ASSUMED_RANK_CONT, 982 GFC_ARRAY_ALLOCATABLE, 983 GFC_ARRAY_POINTER, 984 GFC_ARRAY_POINTER_CONT 985 }; 986 987 /* Array types only. */ 988 struct GTY(()) lang_type { 989 int rank, corank; 990 enum gfc_array_kind akind; 991 tree lbound[GFC_MAX_DIMENSIONS]; 992 tree ubound[GFC_MAX_DIMENSIONS]; 993 tree stride[GFC_MAX_DIMENSIONS]; 994 tree size; 995 tree offset; 996 tree dtype; 997 tree dataptr_type; 998 tree base_decl[2]; 999 tree nonrestricted_type; 1000 tree caf_token; 1001 tree caf_offset; 1002 }; 1003 1004 struct GTY(()) lang_decl { 1005 /* Dummy variables. */ 1006 tree saved_descriptor; 1007 /* Assigned integer nodes. Stringlength is the IO format string's length. 1008 Addr is the address of the string or the target label. Stringlength is 1009 initialized to -2 and assigned to -1 when addr is assigned to the 1010 address of target label. */ 1011 tree stringlen; 1012 tree addr; 1013 /* For assumed-shape coarrays. */ 1014 tree token, caf_offset; 1015 unsigned int scalar_allocatable : 1; 1016 unsigned int scalar_pointer : 1; 1017 unsigned int optional_arg : 1; 1018 }; 1019 1020 1021 #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr 1022 #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen 1023 #define GFC_DECL_TOKEN(node) DECL_LANG_SPECIFIC(node)->token 1024 #define GFC_DECL_CAF_OFFSET(node) DECL_LANG_SPECIFIC(node)->caf_offset 1025 #define GFC_DECL_SAVED_DESCRIPTOR(node) \ 1026 (DECL_LANG_SPECIFIC(node)->saved_descriptor) 1027 #define GFC_DECL_SCALAR_ALLOCATABLE(node) \ 1028 (DECL_LANG_SPECIFIC (node)->scalar_allocatable) 1029 #define GFC_DECL_SCALAR_POINTER(node) \ 1030 (DECL_LANG_SPECIFIC (node)->scalar_pointer) 1031 #define GFC_DECL_OPTIONAL_ARGUMENT(node) \ 1032 (DECL_LANG_SPECIFIC (node)->optional_arg) 1033 #define GFC_DECL_GET_SCALAR_ALLOCATABLE(node) \ 1034 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_ALLOCATABLE (node) : 0) 1035 #define GFC_DECL_GET_SCALAR_POINTER(node) \ 1036 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_POINTER (node) : 0) 1037 #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) 1038 #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) 1039 #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) 1040 #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) 1041 #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) 1042 #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) 1043 #define GFC_DECL_PTR_ARRAY_P(node) DECL_LANG_FLAG_6(node) 1044 #define GFC_DECL_ASSOCIATE_VAR_P(node) DECL_LANG_FLAG_7(node) 1045 #define GFC_DECL_CLASS(node) DECL_LANG_FLAG_8(node) 1046 1047 /* An array descriptor. */ 1048 #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) 1049 /* An array without a descriptor. */ 1050 #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) 1051 /* Fortran CLASS type. */ 1052 #define GFC_CLASS_TYPE_P(node) TYPE_LANG_FLAG_4(node) 1053 /* The GFC_TYPE_ARRAY_* members are present in both descriptor and 1054 descriptorless array types. */ 1055 #define GFC_TYPE_ARRAY_LBOUND(node, dim) \ 1056 (TYPE_LANG_SPECIFIC(node)->lbound[dim]) 1057 #define GFC_TYPE_ARRAY_UBOUND(node, dim) \ 1058 (TYPE_LANG_SPECIFIC(node)->ubound[dim]) 1059 #define GFC_TYPE_ARRAY_STRIDE(node, dim) \ 1060 (TYPE_LANG_SPECIFIC(node)->stride[dim]) 1061 #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) 1062 #define GFC_TYPE_ARRAY_CORANK(node) (TYPE_LANG_SPECIFIC(node)->corank) 1063 #define GFC_TYPE_ARRAY_CAF_TOKEN(node) (TYPE_LANG_SPECIFIC(node)->caf_token) 1064 #define GFC_TYPE_ARRAY_CAF_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->caf_offset) 1065 #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) 1066 #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) 1067 #define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind) 1068 /* Code should use gfc_get_dtype instead of accessing this directly. It may 1069 not be known when the type is created. */ 1070 #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) 1071 #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ 1072 (TYPE_LANG_SPECIFIC(node)->dataptr_type) 1073 #define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \ 1074 (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)]) 1075 1076 1077 /* Build an expression with void type. */ 1078 #define build1_v(code, arg) \ 1079 fold_build1_loc (input_location, code, void_type_node, arg) 1080 #define build2_v(code, arg1, arg2) \ 1081 fold_build2_loc (input_location, code, void_type_node, arg1, arg2) 1082 #define build3_v(code, arg1, arg2, arg3) \ 1083 fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3) 1084 #define build4_v(code, arg1, arg2, arg3, arg4) \ 1085 build4_loc (input_location, code, void_type_node, arg1, arg2, \ 1086 arg3, arg4) 1087 1088 /* This group of functions allows a caller to evaluate an expression from 1089 the callee's interface. It establishes a mapping between the interface's 1090 dummy arguments and the caller's actual arguments, then applies that 1091 mapping to a given gfc_expr. 1092 1093 You can initialize a mapping structure like so: 1094 1095 gfc_interface_mapping mapping; 1096 ... 1097 gfc_init_interface_mapping (&mapping); 1098 1099 You should then evaluate each actual argument into a temporary 1100 gfc_se structure, here called "se", and map the result to the 1101 dummy argument's symbol, here called "sym": 1102 1103 gfc_add_interface_mapping (&mapping, sym, &se); 1104 1105 After adding all mappings, you should call: 1106 1107 gfc_finish_interface_mapping (&mapping, pre, post); 1108 1109 where "pre" and "post" are statement blocks for initialization 1110 and finalization code respectively. You can then evaluate an 1111 interface expression "expr" as follows: 1112 1113 gfc_apply_interface_mapping (&mapping, se, expr); 1114 1115 Once you've evaluated all expressions, you should free 1116 the mapping structure with: 1117 1118 gfc_free_interface_mapping (&mapping); */ 1119 1120 1121 /* This structure represents a mapping from OLD to NEW, where OLD is a 1122 dummy argument symbol and NEW is a symbol that represents the value 1123 of an actual argument. Mappings are linked together using NEXT 1124 (in no particular order). */ 1125 typedef struct gfc_interface_sym_mapping 1126 { 1127 struct gfc_interface_sym_mapping *next; 1128 gfc_symbol *old; 1129 gfc_symtree *new_sym; 1130 gfc_expr *expr; 1131 } 1132 gfc_interface_sym_mapping; 1133 1134 1135 /* This structure is used by callers to evaluate an expression from 1136 a callee's interface. */ 1137 typedef struct gfc_interface_mapping 1138 { 1139 /* Maps the interface's dummy arguments to the values that the caller 1140 is passing. The whole list is owned by this gfc_interface_mapping. */ 1141 gfc_interface_sym_mapping *syms; 1142 1143 /* A list of gfc_charlens that were needed when creating copies of 1144 expressions. The whole list is owned by this gfc_interface_mapping. */ 1145 gfc_charlen *charlens; 1146 } 1147 gfc_interface_mapping; 1148 1149 void gfc_init_interface_mapping (gfc_interface_mapping *); 1150 void gfc_free_interface_mapping (gfc_interface_mapping *); 1151 void gfc_add_interface_mapping (gfc_interface_mapping *, 1152 gfc_symbol *, gfc_se *, gfc_expr *); 1153 void gfc_finish_interface_mapping (gfc_interface_mapping *, 1154 stmtblock_t *, stmtblock_t *); 1155 void gfc_apply_interface_mapping (gfc_interface_mapping *, 1156 gfc_se *, gfc_expr *); 1157 1158 1159 /* Standard error messages used in all the trans-*.c files. */ 1160 extern const char gfc_msg_fault[]; 1161 extern const char gfc_msg_wrong_return[]; 1162 1163 #define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */ 1164 #define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare 1165 construct is not workshared. */ 1166 #define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt 1167 to create parallel loops. */ 1168 #define OMPWS_SCALARIZER_BODY 8 /* Set if handling body of potential 1169 parallel loop. */ 1170 #define OMPWS_NOWAIT 16 /* Use NOWAIT on OMP_FOR. */ 1171 extern int ompws_flags; 1172 1173 #endif /* GFC_TRANS_H */ 1174