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6de9cd9a | 1 | /* Header for code translation functions |
0ad77f55 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
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 2, or (at your option) any later | |
10 | version. | |
6de9cd9a | 11 | |
9fc4d79b TS |
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. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
9fc4d79b | 18 | along with GCC; see the file COPYING. If not, write to the Free |
ab57747b KC |
19 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
6de9cd9a DN |
21 | |
22 | #ifndef GFC_TRANS_H | |
23 | #define GFC_TRANS_H | |
24 | ||
25 | /* Mangled symbols take the form __module__name. */ | |
26 | #define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*2+4) | |
27 | ||
28 | /* Struct for holding a block of statements. It should be treated as an | |
29 | opaque entity and not modified directly. This allows us to change the | |
30 | underlying representation of statement lists. */ | |
31 | typedef struct | |
32 | { | |
33 | tree head; | |
b40410b9 | 34 | unsigned int has_scope:1; |
6de9cd9a DN |
35 | } |
36 | stmtblock_t; | |
37 | ||
1f2959f0 | 38 | /* a simplified expression */ |
6de9cd9a DN |
39 | typedef struct gfc_se |
40 | { | |
41 | /* Code blocks to be executed before and after using the value. */ | |
42 | stmtblock_t pre; | |
43 | stmtblock_t post; | |
44 | ||
45 | /* the result of the expression */ | |
46 | tree expr; | |
47 | ||
48 | /* The length of a character string value. */ | |
49 | tree string_length; | |
50 | ||
51 | /* If set gfc_conv_variable will return an expression for the array | |
52 | descriptor. When set, want_pointer should also be set. | |
53 | If not set scalarizing variables will be substituted. */ | |
54 | unsigned descriptor_only:1; | |
55 | ||
56 | /* When this is set gfc_conv_expr returns the address of a variable. Only | |
57 | applies to EXPR_VARIABLE nodes. | |
58 | Also used by gfc_conv_array_parameter. When set this indicates a pointer | |
59 | to the descriptor should be returned, rather than the descriptor itself. | |
60 | */ | |
61 | unsigned want_pointer:1; | |
62 | ||
63 | /* An array function call returning without a temporary. Also used for array | |
64 | pointer assignments. */ | |
65 | unsigned direct_byref:1; | |
66 | ||
67 | /* Ignore absent optional arguments. Used for some intrinsics. */ | |
68 | unsigned ignore_optional:1; | |
69 | ||
ad5dd90d PT |
70 | /* When this is set the data and offset fields of the returned descriptor |
71 | are NULL. Used by intrinsic size. */ | |
72 | unsigned data_not_needed:1; | |
73 | ||
6de9cd9a DN |
74 | /* Scalarization parameters. */ |
75 | struct gfc_se *parent; | |
76 | struct gfc_ss *ss; | |
77 | struct gfc_loopinfo *loop; | |
78 | } | |
79 | gfc_se; | |
80 | ||
81 | ||
e7dc5b4f | 82 | /* Scalarization State chain. Created by walking an expression tree before |
6de9cd9a DN |
83 | creating the scalarization loops. Then passed as part of a gfc_se structure |
84 | to translate the expression inside the loop. Note that these chains are | |
85 | terminated by gfc_se_terminator, not NULL. A NULL pointer in a gfc_se | |
86 | indicates to gfc_conv_* that this is a scalar expression. | |
87 | Note that some member arrays correspond to scalarizer rank and others | |
88 | are the variable rank. */ | |
89 | ||
90 | typedef struct gfc_ss_info | |
91 | { | |
92 | int dimen; | |
93 | /* The ref that holds information on this section. */ | |
94 | gfc_ref *ref; | |
95 | /* The descriptor of this array. */ | |
96 | tree descriptor; | |
97 | /* holds the pointer to the data array. */ | |
98 | tree data; | |
99 | /* To move some of the array index calculation out of the innermost loop. */ | |
100 | tree offset; | |
101 | tree saved_offset; | |
102 | tree stride0; | |
103 | /* Holds the SS for a subscript. Indexed by actual dimension. */ | |
104 | struct gfc_ss *subscript[GFC_MAX_DIMENSIONS]; | |
105 | ||
106 | /* stride and delta are used to access this inside a scalarization loop. | |
107 | start is used in the calculation of these. Indexed by scalarizer | |
108 | dimension. */ | |
109 | tree start[GFC_MAX_DIMENSIONS]; | |
110 | tree stride[GFC_MAX_DIMENSIONS]; | |
111 | tree delta[GFC_MAX_DIMENSIONS]; | |
112 | ||
e7dc5b4f | 113 | /* Translation from scalarizer dimensions to actual dimensions. |
6de9cd9a DN |
114 | actual = dim[scalarizer] */ |
115 | int dim[GFC_MAX_DIMENSIONS]; | |
116 | } | |
117 | gfc_ss_info; | |
118 | ||
119 | typedef enum | |
120 | { | |
121 | /* A scalar value. This will be evaluated before entering the | |
122 | scalarization loop. */ | |
123 | GFC_SS_SCALAR, | |
124 | ||
2054fc29 | 125 | /* Like GFC_SS_SCALAR except it evaluates a pointer to the expression. |
6de9cd9a DN |
126 | Used for elemental function parameters. */ |
127 | GFC_SS_REFERENCE, | |
128 | ||
129 | /* An array section. Scalarization indices will be substituted during | |
130 | expression translation. */ | |
131 | GFC_SS_SECTION, | |
132 | ||
133 | /* A non-elemental function call returning an array. The call is executed | |
134 | before entering the scalarization loop, storing the result in a | |
135 | temporary. This temporary is then used inside the scalarization loop. | |
136 | Simple assignments, eg. a(:) = fn() are handles without a temporary | |
137 | as a special case. */ | |
138 | GFC_SS_FUNCTION, | |
139 | ||
140 | /* An array constructor. The current implementation is sub-optimal in | |
141 | many cases. It allocated a temporary, assigns the values to it, then | |
142 | uses this temporary inside the scalarization loop. */ | |
143 | GFC_SS_CONSTRUCTOR, | |
144 | ||
7a70c12d RS |
145 | /* A vector subscript. The vector's descriptor is cached in the |
146 | "descriptor" field of the associated gfc_ss_info. */ | |
6de9cd9a DN |
147 | GFC_SS_VECTOR, |
148 | ||
149 | /* A temporary array allocated by the scalarizer. Its rank can be less | |
150 | than that of the assignment expression. */ | |
151 | GFC_SS_TEMP, | |
152 | ||
153 | /* An intrinsic function call. Many intrinsic functions which map directly | |
154 | to library calls are created as GFC_SS_FUNCTION nodes. */ | |
e9cfef64 PB |
155 | GFC_SS_INTRINSIC, |
156 | ||
157 | /* A component of a derived type. */ | |
158 | GFC_SS_COMPONENT | |
6de9cd9a DN |
159 | } |
160 | gfc_ss_type; | |
161 | ||
162 | /* SS structures can only belong to a single loopinfo. They must be added | |
163 | otherwise they will not get freed. */ | |
164 | typedef struct gfc_ss | |
165 | { | |
166 | gfc_ss_type type; | |
167 | gfc_expr *expr; | |
e9cfef64 | 168 | mpz_t *shape; |
40f20186 | 169 | tree string_length; |
6de9cd9a DN |
170 | union |
171 | { | |
172 | /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */ | |
173 | struct | |
174 | { | |
175 | tree expr; | |
6de9cd9a DN |
176 | } |
177 | scalar; | |
178 | ||
179 | /* GFC_SS_TEMP. */ | |
180 | struct | |
181 | { | |
182 | /* The rank of the temporary. May be less than the rank of the | |
183 | assigned expression. */ | |
184 | int dimen; | |
185 | tree type; | |
6de9cd9a DN |
186 | } |
187 | temp; | |
188 | /* All other types. */ | |
189 | gfc_ss_info info; | |
190 | } | |
191 | data; | |
192 | ||
193 | /* All the SS in a loop and linked through loop_chain. The SS for an | |
194 | expression are linked by the next pointer. */ | |
195 | struct gfc_ss *loop_chain; | |
196 | struct gfc_ss *next; | |
197 | ||
e7dc5b4f | 198 | /* This is used by assignments requiring temporaries. The bits specify which |
6de9cd9a DN |
199 | loops the terms appear in. This will be 1 for the RHS expressions, |
200 | 2 for the LHS expressions, and 3(=1|2) for the temporary. */ | |
201 | unsigned useflags:2; | |
202 | } | |
203 | gfc_ss; | |
204 | #define gfc_get_ss() gfc_getmem(sizeof(gfc_ss)) | |
205 | ||
1f2959f0 | 206 | /* The contents of this aren't actually used. A NULL SS chain indicates a |
6de9cd9a DN |
207 | scalar expression, so this pointer is used to terminate SS chains. */ |
208 | extern gfc_ss * const gfc_ss_terminator; | |
209 | ||
210 | /* Holds information about an expression while it is being scalarized. */ | |
211 | typedef struct gfc_loopinfo | |
212 | { | |
213 | stmtblock_t pre; | |
214 | stmtblock_t post; | |
215 | ||
216 | int dimen; | |
217 | ||
218 | /* All the SS involved with this loop. */ | |
219 | gfc_ss *ss; | |
e7dc5b4f | 220 | /* The SS describing the temporary used in an assignment. */ |
6de9cd9a DN |
221 | gfc_ss *temp_ss; |
222 | ||
223 | /* The scalarization loop index variables. */ | |
224 | tree loopvar[GFC_MAX_DIMENSIONS]; | |
225 | ||
226 | /* The bounds of the scalarization loops. */ | |
227 | tree from[GFC_MAX_DIMENSIONS]; | |
228 | tree to[GFC_MAX_DIMENSIONS]; | |
229 | gfc_ss *specloop[GFC_MAX_DIMENSIONS]; | |
230 | ||
231 | /* The code member contains the code for the body of the next outer loop. */ | |
232 | stmtblock_t code[GFC_MAX_DIMENSIONS]; | |
233 | ||
234 | /* Order in which the dimensions should be looped, innermost first. */ | |
235 | int order[GFC_MAX_DIMENSIONS]; | |
236 | ||
237 | /* The number of dimensions for which a temporary is used. */ | |
238 | int temp_dim; | |
239 | ||
240 | /* If set we don't need the loop variables. */ | |
241 | unsigned array_parameter:1; | |
242 | } | |
243 | gfc_loopinfo; | |
244 | ||
7b5b57b7 PB |
245 | |
246 | /* Information about a symbol that has been shadowed by a temporary. */ | |
247 | typedef struct | |
248 | { | |
249 | symbol_attribute attr; | |
250 | tree decl; | |
251 | } | |
252 | gfc_saved_var; | |
253 | ||
254 | ||
6de9cd9a DN |
255 | /* Advance the SS chain to the next term. */ |
256 | void gfc_advance_se_ss_chain (gfc_se *); | |
257 | ||
aa9c57ec KH |
258 | /* Call this to initialize a gfc_se structure before use |
259 | first parameter is structure to initialize, second is | |
6de9cd9a DN |
260 | parent to get scalarization data from, or NULL. */ |
261 | void gfc_init_se (gfc_se *, gfc_se *); | |
262 | ||
263 | /* Create an artificial variable decl and add it to the current scope. */ | |
264 | tree gfc_create_var (tree, const char *); | |
265 | /* Like above but doesn't add it to the current scope. */ | |
266 | tree gfc_create_var_np (tree, const char *); | |
267 | ||
268 | /* Store the result of an expression in a temp variable so it can be used | |
269 | repeatedly even if the original changes */ | |
270 | void gfc_make_safe_expr (gfc_se * se); | |
271 | ||
272 | /* Makes sure se is suitable for passing as a function string parameter. */ | |
273 | void gfc_conv_string_parameter (gfc_se * se); | |
274 | ||
0a821a92 FW |
275 | /* Compare two strings. */ |
276 | tree gfc_build_compare_string (tree, tree, tree, tree); | |
277 | ||
6de9cd9a DN |
278 | /* Add an item to the end of TREE_LIST. */ |
279 | tree gfc_chainon_list (tree, tree); | |
280 | ||
13795658 | 281 | /* When using the gfc_conv_* make sure you understand what they do, i.e. |
69de3b83 | 282 | when a POST chain may be created, and what the returned expression may be |
6de9cd9a DN |
283 | used for. Note that character strings have special handling. This |
284 | should not be a problem as most statements/operations only deal with | |
a4f5cd44 PB |
285 | numeric/logical types. See the implementations in trans-expr.c |
286 | for details of the individual functions. */ | |
6de9cd9a | 287 | |
6de9cd9a | 288 | void gfc_conv_expr (gfc_se * se, gfc_expr * expr); |
6de9cd9a | 289 | void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); |
6de9cd9a | 290 | void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); |
6de9cd9a | 291 | void gfc_conv_expr_reference (gfc_se * se, gfc_expr *); |
6de9cd9a | 292 | void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); |
a4f5cd44 | 293 | |
ce2df7c6 FW |
294 | /* Find the decl containing the auxiliary variables for assigned variables. */ |
295 | void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); | |
6de9cd9a DN |
296 | /* If the value is not constant, Create a temporary and copy the value. */ |
297 | tree gfc_evaluate_now (tree, stmtblock_t *); | |
298 | ||
299 | /* Intrinsic function handling. */ | |
300 | void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); | |
301 | ||
302 | /* Does an intrinsic map directly to an external library call. */ | |
303 | int gfc_is_intrinsic_libcall (gfc_expr *); | |
304 | ||
305 | /* Also used to CALL subroutines. */ | |
dda895f9 | 306 | int gfc_conv_function_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *); |
6de9cd9a DN |
307 | /* gfc_trans_* shouldn't call push/poplevel, use gfc_push/pop_scope */ |
308 | ||
309 | /* Generate code for a scalar assignment. */ | |
310 | tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, bt); | |
311 | ||
312 | /* Translate COMMON blocks. */ | |
313 | void gfc_trans_common (gfc_namespace *); | |
314 | ||
f7b529fa | 315 | /* Translate a derived type constructor. */ |
6de9cd9a DN |
316 | void gfc_conv_structure (gfc_se *, gfc_expr *, int); |
317 | ||
318 | /* Return an expression which determines if a dummy parameter is present. */ | |
319 | tree gfc_conv_expr_present (gfc_symbol *); | |
e15e9be3 PT |
320 | /* Convert a missing, dummy argument into a null or zero. */ |
321 | void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec); | |
6de9cd9a DN |
322 | |
323 | /* Generate code to allocate a string temporary. */ | |
324 | tree gfc_conv_string_tmp (gfc_se *, tree, tree); | |
ca2940c3 TS |
325 | /* Get the string length variable belonging to an expression. */ |
326 | tree gfc_get_expr_charlen (gfc_expr *); | |
6de9cd9a DN |
327 | /* Initialize a string length variable. */ |
328 | void gfc_trans_init_string_length (gfc_charlen *, stmtblock_t *); | |
417ab240 JJ |
329 | /* Ensure type sizes can be gimplified. */ |
330 | void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); | |
6de9cd9a DN |
331 | |
332 | /* Add an expression to the end of a block. */ | |
333 | void gfc_add_expr_to_block (stmtblock_t *, tree); | |
334 | /* Add a block to the end of a block. */ | |
335 | void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); | |
336 | /* Add a MODIFY_EXPR to a block. */ | |
337 | void gfc_add_modify_expr (stmtblock_t *, tree, tree); | |
338 | ||
339 | /* Initialize a statement block. */ | |
340 | void gfc_init_block (stmtblock_t *); | |
69de3b83 | 341 | /* Start a new statement block. Like gfc_init_block but also starts a new |
6de9cd9a DN |
342 | variable scope. */ |
343 | void gfc_start_block (stmtblock_t *); | |
344 | /* Finish a statement block. Also closes the scope if the block was created | |
345 | with gfc_start_block. */ | |
346 | tree gfc_finish_block (stmtblock_t *); | |
347 | /* Merge the scope of a block with its parent. */ | |
348 | void gfc_merge_block_scope (stmtblock_t * block); | |
349 | ||
350 | /* Return the backend label decl. */ | |
351 | tree gfc_get_label_decl (gfc_st_label *); | |
352 | ||
353 | /* Return the decl for an external function. */ | |
354 | tree gfc_get_extern_function_decl (gfc_symbol *); | |
355 | ||
356 | /* Return the decl for a function. */ | |
357 | tree gfc_get_function_decl (gfc_symbol *); | |
358 | ||
6de9cd9a DN |
359 | /* Build an ADDR_EXPR. */ |
360 | tree gfc_build_addr_expr (tree, tree); | |
361 | ||
6de9cd9a DN |
362 | /* Build an ARRAY_REF. */ |
363 | tree gfc_build_array_ref (tree, tree); | |
364 | ||
49de9e73 | 365 | /* Creates a label. Decl is artificial if label_id == NULL_TREE. */ |
6de9cd9a DN |
366 | tree gfc_build_label_decl (tree); |
367 | ||
368 | /* Return the decl used to hold the function return value. | |
369 | Do not use if the function has an explicit result variable. */ | |
5f20c93a | 370 | tree gfc_get_fake_result_decl (gfc_symbol *, int); |
6de9cd9a DN |
371 | |
372 | /* Get the return label for the current function. */ | |
373 | tree gfc_get_return_label (void); | |
374 | ||
375 | /* Add a decl to the binding level for the current function. */ | |
376 | void gfc_add_decl_to_function (tree); | |
377 | ||
378 | /* Make prototypes for runtime library functions. */ | |
379 | void gfc_build_builtin_function_decls (void); | |
380 | ||
c8cc8542 PB |
381 | /* Set the backend source location of a decl. */ |
382 | void gfc_set_decl_location (tree, locus *); | |
383 | ||
6de9cd9a DN |
384 | /* Return the variable decl for a symbol. */ |
385 | tree gfc_get_symbol_decl (gfc_symbol *); | |
386 | ||
597073ac PB |
387 | /* Build a static initializer. */ |
388 | tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool); | |
389 | ||
7b5b57b7 PB |
390 | /* Substitute a temporary variable in place of the real one. */ |
391 | void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); | |
392 | ||
393 | /* Restore the original variable. */ | |
394 | void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); | |
395 | ||
bae88af6 TS |
396 | /* Returns true if a variable of specified size should go on the stack. */ |
397 | int gfc_can_put_var_on_stack (tree); | |
398 | ||
69de3b83 | 399 | /* Allocate the lang-specific part of a decl node. */ |
6de9cd9a DN |
400 | void gfc_allocate_lang_decl (tree); |
401 | ||
402 | /* Advance along a TREE_CHAIN. */ | |
403 | tree gfc_advance_chain (tree, int); | |
404 | ||
405 | /* Create a decl for a function. */ | |
3d79abbd | 406 | void gfc_create_function_decl (gfc_namespace *); |
6de9cd9a DN |
407 | /* Generate the code for a function. */ |
408 | void gfc_generate_function_code (gfc_namespace *); | |
0de4325e TS |
409 | /* Output a BLOCK DATA program unit. */ |
410 | void gfc_generate_block_data (gfc_namespace *); | |
6de9cd9a DN |
411 | /* Output a decl for a module variable. */ |
412 | void gfc_generate_module_vars (gfc_namespace *); | |
413 | ||
414 | /* Get and set the current location. */ | |
415 | void gfc_set_backend_locus (locus *); | |
416 | void gfc_get_backend_locus (locus *); | |
417 | ||
418 | /* Handle static constructor functions. */ | |
419 | extern GTY(()) tree gfc_static_ctors; | |
420 | void gfc_generate_constructors (void); | |
421 | ||
636da744 PT |
422 | /* Get the string length of an array constructor. */ |
423 | bool get_array_ctor_strlen (gfc_constructor *, tree *); | |
424 | ||
6de9cd9a DN |
425 | /* Generate a runtime error check. */ |
426 | void gfc_trans_runtime_check (tree, tree, stmtblock_t *); | |
427 | ||
1f2959f0 | 428 | /* Generate code for an assignment, includes scalarization. */ |
6de9cd9a DN |
429 | tree gfc_trans_assignment (gfc_expr *, gfc_expr *); |
430 | ||
49de9e73 | 431 | /* Generate code for a pointer assignment. */ |
6de9cd9a DN |
432 | tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); |
433 | ||
434 | /* Initialize function decls for library functions. */ | |
435 | void gfc_build_intrinsic_lib_fndecls (void); | |
436 | /* Create function decls for IO library functions. */ | |
437 | void gfc_build_io_library_fndecls (void); | |
438 | /* Build a function decl for a library function. */ | |
439 | tree gfc_build_library_function_decl (tree, tree, int, ...); | |
440 | ||
441 | /* somewhere! */ | |
442 | tree pushdecl (tree); | |
443 | tree pushdecl_top_level (tree); | |
444 | void pushlevel (int); | |
445 | tree poplevel (int, int, int); | |
446 | tree getdecls (void); | |
447 | tree gfc_truthvalue_conversion (tree); | |
6e34d3a3 JM |
448 | tree builtin_function (const char *, tree, int, enum built_in_class, |
449 | const char *, tree); | |
6de9cd9a | 450 | |
6c7a4dfd JJ |
451 | /* In trans-openmp.c */ |
452 | bool gfc_omp_privatize_by_reference (tree); | |
453 | enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); | |
454 | bool gfc_omp_disregard_value_expr (tree, bool); | |
455 | bool gfc_omp_private_debug_clause (tree, bool); | |
456 | struct gimplify_omp_ctx; | |
457 | void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); | |
458 | ||
6de9cd9a DN |
459 | /* Runtime library function decls. */ |
460 | extern GTY(()) tree gfor_fndecl_internal_malloc; | |
461 | extern GTY(()) tree gfor_fndecl_internal_malloc64; | |
ec25720b RS |
462 | extern GTY(()) tree gfor_fndecl_internal_realloc; |
463 | extern GTY(()) tree gfor_fndecl_internal_realloc64; | |
6de9cd9a DN |
464 | extern GTY(()) tree gfor_fndecl_internal_free; |
465 | extern GTY(()) tree gfor_fndecl_allocate; | |
466 | extern GTY(()) tree gfor_fndecl_allocate64; | |
5b725b8d TK |
467 | extern GTY(()) tree gfor_fndecl_allocate_array; |
468 | extern GTY(()) tree gfor_fndecl_allocate64_array; | |
6de9cd9a DN |
469 | extern GTY(()) tree gfor_fndecl_deallocate; |
470 | extern GTY(()) tree gfor_fndecl_pause_numeric; | |
471 | extern GTY(()) tree gfor_fndecl_pause_string; | |
472 | extern GTY(()) tree gfor_fndecl_stop_numeric; | |
473 | extern GTY(()) tree gfor_fndecl_stop_string; | |
474 | extern GTY(()) tree gfor_fndecl_select_string; | |
475 | extern GTY(()) tree gfor_fndecl_runtime_error; | |
944b8b35 | 476 | extern GTY(()) tree gfor_fndecl_set_fpe; |
8b67b708 | 477 | extern GTY(()) tree gfor_fndecl_set_std; |
25fc05eb | 478 | extern GTY(()) tree gfor_fndecl_ttynam; |
35059811 FXC |
479 | extern GTY(()) tree gfor_fndecl_ctime; |
480 | extern GTY(()) tree gfor_fndecl_fdate; | |
6de9cd9a DN |
481 | extern GTY(()) tree gfor_fndecl_in_pack; |
482 | extern GTY(()) tree gfor_fndecl_in_unpack; | |
483 | extern GTY(()) tree gfor_fndecl_associated; | |
484 | ||
485 | /* Math functions. Many other math functions are handled in | |
486 | trans-intrinsic.c. */ | |
5b200ac2 FW |
487 | |
488 | typedef struct gfc_powdecl_list GTY(()) | |
489 | { | |
490 | tree integer; | |
491 | tree real; | |
492 | tree cmplx; | |
493 | } | |
494 | gfc_powdecl_list; | |
495 | ||
644cb69f | 496 | extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
497 | extern GTY(()) tree gfor_fndecl_math_cpowf; |
498 | extern GTY(()) tree gfor_fndecl_math_cpow; | |
644cb69f FXC |
499 | extern GTY(()) tree gfor_fndecl_math_cpowl10; |
500 | extern GTY(()) tree gfor_fndecl_math_cpowl16; | |
6de9cd9a DN |
501 | extern GTY(()) tree gfor_fndecl_math_ishftc4; |
502 | extern GTY(()) tree gfor_fndecl_math_ishftc8; | |
644cb69f | 503 | extern GTY(()) tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
504 | extern GTY(()) tree gfor_fndecl_math_exponent4; |
505 | extern GTY(()) tree gfor_fndecl_math_exponent8; | |
644cb69f FXC |
506 | extern GTY(()) tree gfor_fndecl_math_exponent10; |
507 | extern GTY(()) tree gfor_fndecl_math_exponent16; | |
6de9cd9a DN |
508 | |
509 | /* String functions. */ | |
510 | extern GTY(()) tree gfor_fndecl_copy_string; | |
511 | extern GTY(()) tree gfor_fndecl_compare_string; | |
512 | extern GTY(()) tree gfor_fndecl_concat_string; | |
513 | extern GTY(()) tree gfor_fndecl_string_len_trim; | |
514 | extern GTY(()) tree gfor_fndecl_string_index; | |
515 | extern GTY(()) tree gfor_fndecl_string_scan; | |
516 | extern GTY(()) tree gfor_fndecl_string_verify; | |
517 | extern GTY(()) tree gfor_fndecl_string_trim; | |
518 | extern GTY(()) tree gfor_fndecl_string_repeat; | |
519 | extern GTY(()) tree gfor_fndecl_adjustl; | |
520 | extern GTY(()) tree gfor_fndecl_adjustr; | |
521 | ||
522 | /* Other misc. runtime library functions. */ | |
523 | extern GTY(()) tree gfor_fndecl_size0; | |
524 | extern GTY(()) tree gfor_fndecl_size1; | |
b41b2534 | 525 | extern GTY(()) tree gfor_fndecl_iargc; |
6de9cd9a DN |
526 | |
527 | /* Implemented in FORTRAN. */ | |
528 | extern GTY(()) tree gfor_fndecl_si_kind; | |
529 | extern GTY(()) tree gfor_fndecl_sr_kind; | |
530 | ||
531 | ||
532 | /* True if node is an integer constant. */ | |
533 | #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) | |
534 | ||
535 | /* G95-specific declaration information. */ | |
536 | ||
537 | /* Array types only. */ | |
538 | struct lang_type GTY(()) | |
539 | { | |
540 | int rank; | |
541 | tree lbound[GFC_MAX_DIMENSIONS]; | |
542 | tree ubound[GFC_MAX_DIMENSIONS]; | |
543 | tree stride[GFC_MAX_DIMENSIONS]; | |
544 | tree size; | |
545 | tree offset; | |
546 | tree dtype; | |
547 | tree dataptr_type; | |
548 | }; | |
549 | ||
550 | struct lang_decl GTY(()) | |
551 | { | |
552 | /* Dummy variables. */ | |
553 | tree saved_descriptor; | |
554 | /* Assigned integer nodes. Stringlength is the IO format string's length. | |
555 | Addr is the address of the string or the target label. Stringlength is | |
1f2959f0 | 556 | initialized to -2 and assigned to -1 when addr is assigned to the |
6de9cd9a DN |
557 | address of target label. */ |
558 | tree stringlen; | |
559 | tree addr; | |
560 | }; | |
561 | ||
562 | ||
563 | #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr | |
564 | #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen | |
565 | #define GFC_DECL_SAVED_DESCRIPTOR(node) \ | |
566 | (DECL_LANG_SPECIFIC(node)->saved_descriptor) | |
567 | #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) | |
568 | #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) | |
569 | #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) | |
6c7a4dfd JJ |
570 | #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) |
571 | #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) | |
572 | #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) | |
6de9cd9a DN |
573 | |
574 | /* An array descriptor. */ | |
575 | #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) | |
576 | /* An array without a descriptor. */ | |
577 | #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) | |
578 | /* The GFC_TYPE_ARRAY_* members are present in both descriptor and | |
579 | descriptorless array types. */ | |
580 | #define GFC_TYPE_ARRAY_LBOUND(node, dim) \ | |
581 | (TYPE_LANG_SPECIFIC(node)->lbound[dim]) | |
582 | #define GFC_TYPE_ARRAY_UBOUND(node, dim) \ | |
583 | (TYPE_LANG_SPECIFIC(node)->ubound[dim]) | |
584 | #define GFC_TYPE_ARRAY_STRIDE(node, dim) \ | |
585 | (TYPE_LANG_SPECIFIC(node)->stride[dim]) | |
586 | #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) | |
587 | #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) | |
588 | #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) | |
40b026d8 PB |
589 | /* Code should use gfc_get_dtype instead of accesig this directly. It may |
590 | not be known when the type is created. */ | |
6de9cd9a DN |
591 | #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) |
592 | #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ | |
593 | (TYPE_LANG_SPECIFIC(node)->dataptr_type) | |
594 | ||
595 | /* I changed this from sorry(...) because it should not return. */ | |
596 | /* TODO: Remove gfc_todo_error before releasing version 1.0. */ | |
597 | #define gfc_todo_error(args...) fatal_error("gfc_todo: Not Implemented: " args) | |
598 | ||
599 | /* Build an expression with void type. */ | |
5d5c039f | 600 | #define build1_v(code, arg) build1(code, void_type_node, arg) |
923ab88c TS |
601 | #define build2_v(code, arg1, arg2) build2(code, void_type_node, \ |
602 | arg1, arg2) | |
603 | #define build3_v(code, arg1, arg2, arg3) build3(code, void_type_node, \ | |
604 | arg1, arg2, arg3) | |
6c7a4dfd JJ |
605 | #define build4_v(code, arg1, arg2, arg3, arg4) build4(code, void_type_node, \ |
606 | arg1, arg2, arg3, arg4) | |
62ab4a54 RS |
607 | |
608 | /* This group of functions allows a caller to evaluate an expression from | |
609 | the callee's interface. It establishes a mapping between the interface's | |
610 | dummy arguments and the caller's actual arguments, then applies that | |
611 | mapping to a given gfc_expr. | |
612 | ||
613 | You can initialize a mapping structure like so: | |
614 | ||
615 | gfc_interface_mapping mapping; | |
616 | ... | |
617 | gfc_init_interface_mapping (&mapping); | |
618 | ||
619 | You should then evaluate each actual argument into a temporary | |
620 | gfc_se structure, here called "se", and map the result to the | |
621 | dummy argument's symbol, here called "sym": | |
622 | ||
623 | gfc_add_interface_mapping (&mapping, sym, &se); | |
624 | ||
625 | After adding all mappings, you should call: | |
626 | ||
627 | gfc_finish_interface_mapping (&mapping, pre, post); | |
628 | ||
629 | where "pre" and "post" are statement blocks for initialization | |
630 | and finalization code respectively. You can then evaluate an | |
631 | interface expression "expr" as follows: | |
632 | ||
633 | gfc_apply_interface_mapping (&mapping, se, expr); | |
634 | ||
635 | Once you've evaluated all expressions, you should free | |
636 | the mapping structure with: | |
637 | ||
638 | gfc_free_interface_mapping (&mapping); */ | |
639 | ||
640 | ||
641 | /* This structure represents a mapping from OLD to NEW, where OLD is a | |
642 | dummy argument symbol and NEW is a symbol that represents the value | |
643 | of an actual argument. Mappings are linked together using NEXT | |
644 | (in no particular order). */ | |
645 | typedef struct gfc_interface_sym_mapping | |
646 | { | |
647 | struct gfc_interface_sym_mapping *next; | |
648 | gfc_symbol *old; | |
649 | gfc_symtree *new; | |
650 | } | |
651 | gfc_interface_sym_mapping; | |
652 | ||
653 | ||
654 | /* This structure is used by callers to evaluate an expression from | |
655 | a callee's interface. */ | |
656 | typedef struct gfc_interface_mapping | |
657 | { | |
658 | /* Maps the interface's dummy arguments to the values that the caller | |
659 | is passing. The whole list is owned by this gfc_interface_mapping. */ | |
660 | gfc_interface_sym_mapping *syms; | |
661 | ||
662 | /* A list of gfc_charlens that were needed when creating copies of | |
663 | expressions. The whole list is owned by this gfc_interface_mapping. */ | |
664 | gfc_charlen *charlens; | |
665 | } | |
666 | gfc_interface_mapping; | |
667 | ||
668 | void gfc_init_interface_mapping (gfc_interface_mapping *); | |
669 | void gfc_free_interface_mapping (gfc_interface_mapping *); | |
670 | void gfc_add_interface_mapping (gfc_interface_mapping *, | |
671 | gfc_symbol *, gfc_se *); | |
672 | void gfc_finish_interface_mapping (gfc_interface_mapping *, | |
673 | stmtblock_t *, stmtblock_t *); | |
674 | void gfc_apply_interface_mapping (gfc_interface_mapping *, | |
675 | gfc_se *, gfc_expr *); | |
676 | ||
6de9cd9a | 677 | #endif /* GFC_TRANS_H */ |