1 /* Expression translation
2 Copyright (C) 2002-2017 Free Software Foundation, Inc.
3 Contributed by Paul Brook <paul@nowt.org>
4 and Steven Bosscher <s.bosscher@student.tudelft.nl>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* trans-expr.c-- generate GENERIC trees for gfc_expr. */
26 #include "coretypes.h"
31 #include "stringpool.h"
32 #include "diagnostic-core.h" /* For fatal_error. */
33 #include "fold-const.h"
34 #include "langhooks.h"
36 #include "constructor.h"
37 #include "trans-const.h"
38 #include "trans-types.h"
39 #include "trans-array.h"
40 /* Only for gfc_trans_assign and gfc_trans_pointer_assign. */
41 #include "trans-stmt.h"
42 #include "dependency.h"
45 /* Convert a scalar to an array descriptor. To be used for assumed-rank
49 get_scalar_to_descriptor_type (tree scalar
, symbol_attribute attr
)
51 enum gfc_array_kind akind
;
54 akind
= GFC_ARRAY_POINTER_CONT
;
55 else if (attr
.allocatable
)
56 akind
= GFC_ARRAY_ALLOCATABLE
;
58 akind
= GFC_ARRAY_ASSUMED_SHAPE_CONT
;
60 if (POINTER_TYPE_P (TREE_TYPE (scalar
)))
61 scalar
= TREE_TYPE (scalar
);
62 return gfc_get_array_type_bounds (TREE_TYPE (scalar
), 0, 0, NULL
, NULL
, 1,
63 akind
, !(attr
.pointer
|| attr
.target
));
67 gfc_conv_scalar_to_descriptor (gfc_se
*se
, tree scalar
, symbol_attribute attr
)
71 type
= get_scalar_to_descriptor_type (scalar
, attr
);
72 desc
= gfc_create_var (type
, "desc");
73 DECL_ARTIFICIAL (desc
) = 1;
75 if (CONSTANT_CLASS_P (scalar
))
78 tmp
= gfc_create_var (TREE_TYPE (scalar
), "scalar");
79 gfc_add_modify (&se
->pre
, tmp
, scalar
);
82 if (!POINTER_TYPE_P (TREE_TYPE (scalar
)))
83 scalar
= gfc_build_addr_expr (NULL_TREE
, scalar
);
84 gfc_add_modify (&se
->pre
, gfc_conv_descriptor_dtype (desc
),
85 gfc_get_dtype (type
));
86 gfc_conv_descriptor_data_set (&se
->pre
, desc
, scalar
);
88 /* Copy pointer address back - but only if it could have changed and
89 if the actual argument is a pointer and not, e.g., NULL(). */
90 if ((attr
.pointer
|| attr
.allocatable
) && attr
.intent
!= INTENT_IN
)
91 gfc_add_modify (&se
->post
, scalar
,
92 fold_convert (TREE_TYPE (scalar
),
93 gfc_conv_descriptor_data_get (desc
)));
98 /* Get the coarray token from the ultimate array or component ref.
99 Returns a NULL_TREE, when the ref object is not allocatable or pointer. */
102 gfc_get_ultimate_alloc_ptr_comps_caf_token (gfc_se
*outerse
, gfc_expr
*expr
)
104 gfc_symbol
*sym
= expr
->symtree
->n
.sym
;
105 bool is_coarray
= sym
->attr
.codimension
;
106 gfc_expr
*caf_expr
= gfc_copy_expr (expr
);
107 gfc_ref
*ref
= caf_expr
->ref
, *last_caf_ref
= NULL
;
111 if (ref
->type
== REF_COMPONENT
112 && (ref
->u
.c
.component
->attr
.allocatable
113 || ref
->u
.c
.component
->attr
.pointer
)
114 && (is_coarray
|| ref
->u
.c
.component
->attr
.codimension
))
119 if (last_caf_ref
== NULL
)
122 tree comp
= last_caf_ref
->u
.c
.component
->caf_token
, caf
;
124 bool comp_ref
= !last_caf_ref
->u
.c
.component
->attr
.dimension
;
125 if (comp
== NULL_TREE
&& comp_ref
)
127 gfc_init_se (&se
, outerse
);
128 gfc_free_ref_list (last_caf_ref
->next
);
129 last_caf_ref
->next
= NULL
;
130 caf_expr
->rank
= comp_ref
? 0 : last_caf_ref
->u
.c
.component
->as
->rank
;
131 se
.want_pointer
= comp_ref
;
132 gfc_conv_expr (&se
, caf_expr
);
133 gfc_add_block_to_block (&outerse
->pre
, &se
.pre
);
135 if (TREE_CODE (se
.expr
) == COMPONENT_REF
&& comp_ref
)
136 se
.expr
= TREE_OPERAND (se
.expr
, 0);
137 gfc_free_expr (caf_expr
);
140 caf
= fold_build3_loc (input_location
, COMPONENT_REF
,
141 TREE_TYPE (comp
), se
.expr
, comp
, NULL_TREE
);
143 caf
= gfc_conv_descriptor_token (se
.expr
);
144 return gfc_build_addr_expr (NULL_TREE
, caf
);
148 /* This is the seed for an eventual trans-class.c
150 The following parameters should not be used directly since they might
151 in future implementations. Use the corresponding APIs. */
152 #define CLASS_DATA_FIELD 0
153 #define CLASS_VPTR_FIELD 1
154 #define CLASS_LEN_FIELD 2
155 #define VTABLE_HASH_FIELD 0
156 #define VTABLE_SIZE_FIELD 1
157 #define VTABLE_EXTENDS_FIELD 2
158 #define VTABLE_DEF_INIT_FIELD 3
159 #define VTABLE_COPY_FIELD 4
160 #define VTABLE_FINAL_FIELD 5
161 #define VTABLE_DEALLOCATE_FIELD 6
165 gfc_class_set_static_fields (tree decl
, tree vptr
, tree data
)
169 vec
<constructor_elt
, va_gc
> *init
= NULL
;
171 field
= TYPE_FIELDS (TREE_TYPE (decl
));
172 tmp
= gfc_advance_chain (field
, CLASS_DATA_FIELD
);
173 CONSTRUCTOR_APPEND_ELT (init
, tmp
, data
);
175 tmp
= gfc_advance_chain (field
, CLASS_VPTR_FIELD
);
176 CONSTRUCTOR_APPEND_ELT (init
, tmp
, vptr
);
178 return build_constructor (TREE_TYPE (decl
), init
);
183 gfc_class_data_get (tree decl
)
186 if (POINTER_TYPE_P (TREE_TYPE (decl
)))
187 decl
= build_fold_indirect_ref_loc (input_location
, decl
);
188 data
= gfc_advance_chain (TYPE_FIELDS (TREE_TYPE (decl
)),
190 return fold_build3_loc (input_location
, COMPONENT_REF
,
191 TREE_TYPE (data
), decl
, data
,
197 gfc_class_vptr_get (tree decl
)
200 /* For class arrays decl may be a temporary descriptor handle, the vptr is
201 then available through the saved descriptor. */
202 if (VAR_P (decl
) && DECL_LANG_SPECIFIC (decl
)
203 && GFC_DECL_SAVED_DESCRIPTOR (decl
))
204 decl
= GFC_DECL_SAVED_DESCRIPTOR (decl
);
205 if (POINTER_TYPE_P (TREE_TYPE (decl
)))
206 decl
= build_fold_indirect_ref_loc (input_location
, decl
);
207 vptr
= gfc_advance_chain (TYPE_FIELDS (TREE_TYPE (decl
)),
209 return fold_build3_loc (input_location
, COMPONENT_REF
,
210 TREE_TYPE (vptr
), decl
, vptr
,
216 gfc_class_len_get (tree decl
)
219 /* For class arrays decl may be a temporary descriptor handle, the len is
220 then available through the saved descriptor. */
221 if (VAR_P (decl
) && DECL_LANG_SPECIFIC (decl
)
222 && GFC_DECL_SAVED_DESCRIPTOR (decl
))
223 decl
= GFC_DECL_SAVED_DESCRIPTOR (decl
);
224 if (POINTER_TYPE_P (TREE_TYPE (decl
)))
225 decl
= build_fold_indirect_ref_loc (input_location
, decl
);
226 len
= gfc_advance_chain (TYPE_FIELDS (TREE_TYPE (decl
)),
228 return fold_build3_loc (input_location
, COMPONENT_REF
,
229 TREE_TYPE (len
), decl
, len
,
234 /* Try to get the _len component of a class. When the class is not unlimited
235 poly, i.e. no _len field exists, then return a zero node. */
238 gfc_class_len_or_zero_get (tree decl
)
241 /* For class arrays decl may be a temporary descriptor handle, the vptr is
242 then available through the saved descriptor. */
243 if (VAR_P (decl
) && DECL_LANG_SPECIFIC (decl
)
244 && GFC_DECL_SAVED_DESCRIPTOR (decl
))
245 decl
= GFC_DECL_SAVED_DESCRIPTOR (decl
);
246 if (POINTER_TYPE_P (TREE_TYPE (decl
)))
247 decl
= build_fold_indirect_ref_loc (input_location
, decl
);
248 len
= gfc_advance_chain (TYPE_FIELDS (TREE_TYPE (decl
)),
250 return len
!= NULL_TREE
? fold_build3_loc (input_location
, COMPONENT_REF
,
251 TREE_TYPE (len
), decl
, len
,
257 /* Get the specified FIELD from the VPTR. */
260 vptr_field_get (tree vptr
, int fieldno
)
263 vptr
= build_fold_indirect_ref_loc (input_location
, vptr
);
264 field
= gfc_advance_chain (TYPE_FIELDS (TREE_TYPE (vptr
)),
266 field
= fold_build3_loc (input_location
, COMPONENT_REF
,
267 TREE_TYPE (field
), vptr
, field
,
274 /* Get the field from the class' vptr. */
277 class_vtab_field_get (tree decl
, int fieldno
)
280 vptr
= gfc_class_vptr_get (decl
);
281 return vptr_field_get (vptr
, fieldno
);
285 /* Define a macro for creating the class_vtab_* and vptr_* accessors in
287 #define VTAB_GET_FIELD_GEN(name, field) tree \
288 gfc_class_vtab_## name ##_get (tree cl) \
290 return class_vtab_field_get (cl, field); \
294 gfc_vptr_## name ##_get (tree vptr) \
296 return vptr_field_get (vptr, field); \
299 VTAB_GET_FIELD_GEN (hash
, VTABLE_HASH_FIELD
)
300 VTAB_GET_FIELD_GEN (extends
, VTABLE_EXTENDS_FIELD
)
301 VTAB_GET_FIELD_GEN (def_init
, VTABLE_DEF_INIT_FIELD
)
302 VTAB_GET_FIELD_GEN (copy
, VTABLE_COPY_FIELD
)
303 VTAB_GET_FIELD_GEN (final
, VTABLE_FINAL_FIELD
)
304 VTAB_GET_FIELD_GEN (deallocate
, VTABLE_DEALLOCATE_FIELD
)
307 /* The size field is returned as an array index type. Therefore treat
308 it and only it specially. */
311 gfc_class_vtab_size_get (tree cl
)
314 size
= class_vtab_field_get (cl
, VTABLE_SIZE_FIELD
);
315 /* Always return size as an array index type. */
316 size
= fold_convert (gfc_array_index_type
, size
);
322 gfc_vptr_size_get (tree vptr
)
325 size
= vptr_field_get (vptr
, VTABLE_SIZE_FIELD
);
326 /* Always return size as an array index type. */
327 size
= fold_convert (gfc_array_index_type
, size
);
333 #undef CLASS_DATA_FIELD
334 #undef CLASS_VPTR_FIELD
335 #undef CLASS_LEN_FIELD
336 #undef VTABLE_HASH_FIELD
337 #undef VTABLE_SIZE_FIELD
338 #undef VTABLE_EXTENDS_FIELD
339 #undef VTABLE_DEF_INIT_FIELD
340 #undef VTABLE_COPY_FIELD
341 #undef VTABLE_FINAL_FIELD
344 /* Search for the last _class ref in the chain of references of this
345 expression and cut the chain there. Albeit this routine is similiar
346 to class.c::gfc_add_component_ref (), is there a significant
347 difference: gfc_add_component_ref () concentrates on an array ref to
348 be the last ref in the chain. This routine is oblivious to the kind
349 of refs following. */
352 gfc_find_and_cut_at_last_class_ref (gfc_expr
*e
)
355 gfc_ref
*ref
, *class_ref
, *tail
= NULL
, *array_ref
;
357 /* Find the last class reference. */
360 for (ref
= e
->ref
; ref
; ref
= ref
->next
)
362 if (ref
->type
== REF_ARRAY
&& ref
->u
.ar
.type
!= AR_ELEMENT
)
365 if (ref
->type
== REF_COMPONENT
366 && ref
->u
.c
.component
->ts
.type
== BT_CLASS
)
368 /* Component to the right of a part reference with nonzero rank
369 must not have the ALLOCATABLE attribute. If attempts are
370 made to reference such a component reference, an error results
371 followed by an ICE. */
372 if (array_ref
&& CLASS_DATA (ref
->u
.c
.component
)->attr
.allocatable
)
377 if (ref
->next
== NULL
)
381 /* Remove and store all subsequent references after the
385 tail
= class_ref
->next
;
386 class_ref
->next
= NULL
;
388 else if (e
->symtree
&& e
->symtree
->n
.sym
->ts
.type
== BT_CLASS
)
394 base_expr
= gfc_expr_to_initialize (e
);
396 /* Restore the original tail expression. */
399 gfc_free_ref_list (class_ref
->next
);
400 class_ref
->next
= tail
;
402 else if (e
->symtree
&& e
->symtree
->n
.sym
->ts
.type
== BT_CLASS
)
404 gfc_free_ref_list (e
->ref
);
411 /* Reset the vptr to the declared type, e.g. after deallocation. */
414 gfc_reset_vptr (stmtblock_t
*block
, gfc_expr
*e
)
421 /* Evaluate the expression and obtain the vptr from it. */
422 gfc_init_se (&se
, NULL
);
424 gfc_conv_expr_descriptor (&se
, e
);
426 gfc_conv_expr (&se
, e
);
427 gfc_add_block_to_block (block
, &se
.pre
);
428 vptr
= gfc_get_vptr_from_expr (se
.expr
);
430 /* If a vptr is not found, we can do nothing more. */
431 if (vptr
== NULL_TREE
)
434 if (UNLIMITED_POLY (e
))
435 gfc_add_modify (block
, vptr
, build_int_cst (TREE_TYPE (vptr
), 0));
438 /* Return the vptr to the address of the declared type. */
439 vtab
= gfc_find_derived_vtab (e
->ts
.u
.derived
);
440 vtable
= vtab
->backend_decl
;
441 if (vtable
== NULL_TREE
)
442 vtable
= gfc_get_symbol_decl (vtab
);
443 vtable
= gfc_build_addr_expr (NULL
, vtable
);
444 vtable
= fold_convert (TREE_TYPE (vptr
), vtable
);
445 gfc_add_modify (block
, vptr
, vtable
);
450 /* Reset the len for unlimited polymorphic objects. */
453 gfc_reset_len (stmtblock_t
*block
, gfc_expr
*expr
)
457 e
= gfc_find_and_cut_at_last_class_ref (expr
);
460 gfc_add_len_component (e
);
461 gfc_init_se (&se_len
, NULL
);
462 gfc_conv_expr (&se_len
, e
);
463 gfc_add_modify (block
, se_len
.expr
,
464 fold_convert (TREE_TYPE (se_len
.expr
), integer_zero_node
));
469 /* Obtain the vptr of the last class reference in an expression.
470 Return NULL_TREE if no class reference is found. */
473 gfc_get_vptr_from_expr (tree expr
)
478 for (tmp
= expr
; tmp
; tmp
= TREE_OPERAND (tmp
, 0))
480 type
= TREE_TYPE (tmp
);
483 if (GFC_CLASS_TYPE_P (type
))
484 return gfc_class_vptr_get (tmp
);
485 if (type
!= TYPE_CANONICAL (type
))
486 type
= TYPE_CANONICAL (type
);
490 if (VAR_P (tmp
) || TREE_CODE (tmp
) == PARM_DECL
)
494 if (POINTER_TYPE_P (TREE_TYPE (tmp
)))
495 tmp
= build_fold_indirect_ref_loc (input_location
, tmp
);
497 if (GFC_CLASS_TYPE_P (TREE_TYPE (tmp
)))
498 return gfc_class_vptr_get (tmp
);
505 class_array_data_assign (stmtblock_t
*block
, tree lhs_desc
, tree rhs_desc
,
508 tree tmp
, tmp2
, type
;
510 gfc_conv_descriptor_data_set (block
, lhs_desc
,
511 gfc_conv_descriptor_data_get (rhs_desc
));
512 gfc_conv_descriptor_offset_set (block
, lhs_desc
,
513 gfc_conv_descriptor_offset_get (rhs_desc
));
515 gfc_add_modify (block
, gfc_conv_descriptor_dtype (lhs_desc
),
516 gfc_conv_descriptor_dtype (rhs_desc
));
518 /* Assign the dimension as range-ref. */
519 tmp
= gfc_get_descriptor_dimension (lhs_desc
);
520 tmp2
= gfc_get_descriptor_dimension (rhs_desc
);
522 type
= lhs_type
? TREE_TYPE (tmp
) : TREE_TYPE (tmp2
);
523 tmp
= build4_loc (input_location
, ARRAY_RANGE_REF
, type
, tmp
,
524 gfc_index_zero_node
, NULL_TREE
, NULL_TREE
);
525 tmp2
= build4_loc (input_location
, ARRAY_RANGE_REF
, type
, tmp2
,
526 gfc_index_zero_node
, NULL_TREE
, NULL_TREE
);
527 gfc_add_modify (block
, tmp
, tmp2
);
531 /* Takes a derived type expression and returns the address of a temporary
532 class object of the 'declared' type. If vptr is not NULL, this is
533 used for the temporary class object.
534 optional_alloc_ptr is false when the dummy is neither allocatable
535 nor a pointer; that's only relevant for the optional handling. */
537 gfc_conv_derived_to_class (gfc_se
*parmse
, gfc_expr
*e
,
538 gfc_typespec class_ts
, tree vptr
, bool optional
,
539 bool optional_alloc_ptr
)
542 tree cond_optional
= NULL_TREE
;
548 /* The derived type needs to be converted to a temporary
550 tmp
= gfc_typenode_for_spec (&class_ts
);
551 var
= gfc_create_var (tmp
, "class");
554 ctree
= gfc_class_vptr_get (var
);
556 if (vptr
!= NULL_TREE
)
558 /* Use the dynamic vptr. */
563 /* In this case the vtab corresponds to the derived type and the
564 vptr must point to it. */
565 vtab
= gfc_find_derived_vtab (e
->ts
.u
.derived
);
567 tmp
= gfc_build_addr_expr (NULL_TREE
, gfc_get_symbol_decl (vtab
));
569 gfc_add_modify (&parmse
->pre
, ctree
,
570 fold_convert (TREE_TYPE (ctree
), tmp
));
572 /* Now set the data field. */
573 ctree
= gfc_class_data_get (var
);
576 cond_optional
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
578 if (parmse
->expr
&& POINTER_TYPE_P (TREE_TYPE (parmse
->expr
)))
580 /* If there is a ready made pointer to a derived type, use it
581 rather than evaluating the expression again. */
582 tmp
= fold_convert (TREE_TYPE (ctree
), parmse
->expr
);
583 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
585 else if (parmse
->ss
&& parmse
->ss
->info
&& parmse
->ss
->info
->useflags
)
587 /* For an array reference in an elemental procedure call we need
588 to retain the ss to provide the scalarized array reference. */
589 gfc_conv_expr_reference (parmse
, e
);
590 tmp
= fold_convert (TREE_TYPE (ctree
), parmse
->expr
);
592 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (tmp
),
594 fold_convert (TREE_TYPE (tmp
), null_pointer_node
));
595 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
599 ss
= gfc_walk_expr (e
);
600 if (ss
== gfc_ss_terminator
)
603 gfc_conv_expr_reference (parmse
, e
);
605 /* Scalar to an assumed-rank array. */
606 if (class_ts
.u
.derived
->components
->as
)
609 type
= get_scalar_to_descriptor_type (parmse
->expr
,
611 gfc_add_modify (&parmse
->pre
, gfc_conv_descriptor_dtype (ctree
),
612 gfc_get_dtype (type
));
614 parmse
->expr
= build3_loc (input_location
, COND_EXPR
,
615 TREE_TYPE (parmse
->expr
),
616 cond_optional
, parmse
->expr
,
617 fold_convert (TREE_TYPE (parmse
->expr
),
619 gfc_conv_descriptor_data_set (&parmse
->pre
, ctree
, parmse
->expr
);
623 tmp
= fold_convert (TREE_TYPE (ctree
), parmse
->expr
);
625 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (tmp
),
627 fold_convert (TREE_TYPE (tmp
),
629 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
635 gfc_init_block (&block
);
638 gfc_conv_expr_descriptor (parmse
, e
);
640 if (e
->rank
!= class_ts
.u
.derived
->components
->as
->rank
)
642 gcc_assert (class_ts
.u
.derived
->components
->as
->type
644 class_array_data_assign (&block
, ctree
, parmse
->expr
, false);
648 if (gfc_expr_attr (e
).codimension
)
649 parmse
->expr
= fold_build1_loc (input_location
,
653 gfc_add_modify (&block
, ctree
, parmse
->expr
);
658 tmp
= gfc_finish_block (&block
);
660 gfc_init_block (&block
);
661 gfc_conv_descriptor_data_set (&block
, ctree
, null_pointer_node
);
663 tmp
= build3_v (COND_EXPR
, cond_optional
, tmp
,
664 gfc_finish_block (&block
));
665 gfc_add_expr_to_block (&parmse
->pre
, tmp
);
668 gfc_add_block_to_block (&parmse
->pre
, &block
);
672 if (class_ts
.u
.derived
->components
->ts
.type
== BT_DERIVED
673 && class_ts
.u
.derived
->components
->ts
.u
.derived
674 ->attr
.unlimited_polymorphic
)
676 /* Take care about initializing the _len component correctly. */
677 ctree
= gfc_class_len_get (var
);
678 if (UNLIMITED_POLY (e
))
683 len
= gfc_copy_expr (e
);
684 gfc_add_len_component (len
);
685 gfc_init_se (&se
, NULL
);
686 gfc_conv_expr (&se
, len
);
688 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (se
.expr
),
689 cond_optional
, se
.expr
,
690 fold_convert (TREE_TYPE (se
.expr
),
696 tmp
= integer_zero_node
;
697 gfc_add_modify (&parmse
->pre
, ctree
, fold_convert (TREE_TYPE (ctree
),
700 /* Pass the address of the class object. */
701 parmse
->expr
= gfc_build_addr_expr (NULL_TREE
, var
);
703 if (optional
&& optional_alloc_ptr
)
704 parmse
->expr
= build3_loc (input_location
, COND_EXPR
,
705 TREE_TYPE (parmse
->expr
),
706 cond_optional
, parmse
->expr
,
707 fold_convert (TREE_TYPE (parmse
->expr
),
712 /* Create a new class container, which is required as scalar coarrays
713 have an array descriptor while normal scalars haven't. Optionally,
714 NULL pointer checks are added if the argument is OPTIONAL. */
717 class_scalar_coarray_to_class (gfc_se
*parmse
, gfc_expr
*e
,
718 gfc_typespec class_ts
, bool optional
)
720 tree var
, ctree
, tmp
;
725 gfc_init_block (&block
);
728 for (ref
= e
->ref
; ref
; ref
= ref
->next
)
730 if (ref
->type
== REF_COMPONENT
731 && ref
->u
.c
.component
->ts
.type
== BT_CLASS
)
735 if (class_ref
== NULL
736 && e
->symtree
&& e
->symtree
->n
.sym
->ts
.type
== BT_CLASS
)
737 tmp
= e
->symtree
->n
.sym
->backend_decl
;
740 /* Remove everything after the last class reference, convert the
741 expression and then recover its tailend once more. */
743 ref
= class_ref
->next
;
744 class_ref
->next
= NULL
;
745 gfc_init_se (&tmpse
, NULL
);
746 gfc_conv_expr (&tmpse
, e
);
747 class_ref
->next
= ref
;
751 var
= gfc_typenode_for_spec (&class_ts
);
752 var
= gfc_create_var (var
, "class");
754 ctree
= gfc_class_vptr_get (var
);
755 gfc_add_modify (&block
, ctree
,
756 fold_convert (TREE_TYPE (ctree
), gfc_class_vptr_get (tmp
)));
758 ctree
= gfc_class_data_get (var
);
759 tmp
= gfc_conv_descriptor_data_get (gfc_class_data_get (tmp
));
760 gfc_add_modify (&block
, ctree
, fold_convert (TREE_TYPE (ctree
), tmp
));
762 /* Pass the address of the class object. */
763 parmse
->expr
= gfc_build_addr_expr (NULL_TREE
, var
);
767 tree cond
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
770 tmp
= gfc_finish_block (&block
);
772 gfc_init_block (&block
);
773 tmp2
= gfc_class_data_get (var
);
774 gfc_add_modify (&block
, tmp2
, fold_convert (TREE_TYPE (tmp2
),
776 tmp2
= gfc_finish_block (&block
);
778 tmp
= build3_loc (input_location
, COND_EXPR
, void_type_node
,
780 gfc_add_expr_to_block (&parmse
->pre
, tmp
);
783 gfc_add_block_to_block (&parmse
->pre
, &block
);
787 /* Takes an intrinsic type expression and returns the address of a temporary
788 class object of the 'declared' type. */
790 gfc_conv_intrinsic_to_class (gfc_se
*parmse
, gfc_expr
*e
,
791 gfc_typespec class_ts
)
799 /* The intrinsic type needs to be converted to a temporary
801 tmp
= gfc_typenode_for_spec (&class_ts
);
802 var
= gfc_create_var (tmp
, "class");
805 ctree
= gfc_class_vptr_get (var
);
807 vtab
= gfc_find_vtab (&e
->ts
);
809 tmp
= gfc_build_addr_expr (NULL_TREE
, gfc_get_symbol_decl (vtab
));
810 gfc_add_modify (&parmse
->pre
, ctree
,
811 fold_convert (TREE_TYPE (ctree
), tmp
));
813 /* Now set the data field. */
814 ctree
= gfc_class_data_get (var
);
815 if (parmse
->ss
&& parmse
->ss
->info
->useflags
)
817 /* For an array reference in an elemental procedure call we need
818 to retain the ss to provide the scalarized array reference. */
819 gfc_conv_expr_reference (parmse
, e
);
820 tmp
= fold_convert (TREE_TYPE (ctree
), parmse
->expr
);
821 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
825 ss
= gfc_walk_expr (e
);
826 if (ss
== gfc_ss_terminator
)
829 gfc_conv_expr_reference (parmse
, e
);
830 if (class_ts
.u
.derived
->components
->as
831 && class_ts
.u
.derived
->components
->as
->type
== AS_ASSUMED_RANK
)
833 tmp
= gfc_conv_scalar_to_descriptor (parmse
, parmse
->expr
,
835 tmp
= fold_build1_loc (input_location
, VIEW_CONVERT_EXPR
,
836 TREE_TYPE (ctree
), tmp
);
839 tmp
= fold_convert (TREE_TYPE (ctree
), parmse
->expr
);
840 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
845 parmse
->use_offset
= 1;
846 gfc_conv_expr_descriptor (parmse
, e
);
847 if (class_ts
.u
.derived
->components
->as
->rank
!= e
->rank
)
849 tmp
= fold_build1_loc (input_location
, VIEW_CONVERT_EXPR
,
850 TREE_TYPE (ctree
), parmse
->expr
);
851 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
854 gfc_add_modify (&parmse
->pre
, ctree
, parmse
->expr
);
858 gcc_assert (class_ts
.type
== BT_CLASS
);
859 if (class_ts
.u
.derived
->components
->ts
.type
== BT_DERIVED
860 && class_ts
.u
.derived
->components
->ts
.u
.derived
861 ->attr
.unlimited_polymorphic
)
863 ctree
= gfc_class_len_get (var
);
864 /* When the actual arg is a char array, then set the _len component of the
865 unlimited polymorphic entity to the length of the string. */
866 if (e
->ts
.type
== BT_CHARACTER
)
868 /* Start with parmse->string_length because this seems to be set to a
869 correct value more often. */
870 if (parmse
->string_length
)
871 tmp
= parmse
->string_length
;
872 /* When the string_length is not yet set, then try the backend_decl of
874 else if (e
->ts
.u
.cl
->backend_decl
)
875 tmp
= e
->ts
.u
.cl
->backend_decl
;
876 /* If both of the above approaches fail, then try to generate an
877 expression from the input, which is only feasible currently, when the
878 expression can be evaluated to a constant one. */
881 /* Try to simplify the expression. */
882 gfc_simplify_expr (e
, 0);
883 if (e
->expr_type
== EXPR_CONSTANT
&& !e
->ts
.u
.cl
->resolved
)
885 /* Amazingly all data is present to compute the length of a
886 constant string, but the expression is not yet there. */
887 e
->ts
.u
.cl
->length
= gfc_get_constant_expr (BT_INTEGER
, 4,
889 mpz_set_ui (e
->ts
.u
.cl
->length
->value
.integer
,
890 e
->value
.character
.length
);
891 gfc_conv_const_charlen (e
->ts
.u
.cl
);
892 e
->ts
.u
.cl
->resolved
= 1;
893 tmp
= e
->ts
.u
.cl
->backend_decl
;
897 gfc_error ("Can't compute the length of the char array at %L.",
903 tmp
= integer_zero_node
;
905 gfc_add_modify (&parmse
->pre
, ctree
, tmp
);
907 else if (class_ts
.type
== BT_CLASS
908 && class_ts
.u
.derived
->components
909 && class_ts
.u
.derived
->components
->ts
.u
910 .derived
->attr
.unlimited_polymorphic
)
912 ctree
= gfc_class_len_get (var
);
913 gfc_add_modify (&parmse
->pre
, ctree
,
914 fold_convert (TREE_TYPE (ctree
),
917 /* Pass the address of the class object. */
918 parmse
->expr
= gfc_build_addr_expr (NULL_TREE
, var
);
922 /* Takes a scalarized class array expression and returns the
923 address of a temporary scalar class object of the 'declared'
925 OOP-TODO: This could be improved by adding code that branched on
926 the dynamic type being the same as the declared type. In this case
927 the original class expression can be passed directly.
928 optional_alloc_ptr is false when the dummy is neither allocatable
929 nor a pointer; that's relevant for the optional handling.
930 Set copyback to true if class container's _data and _vtab pointers
931 might get modified. */
934 gfc_conv_class_to_class (gfc_se
*parmse
, gfc_expr
*e
, gfc_typespec class_ts
,
935 bool elemental
, bool copyback
, bool optional
,
936 bool optional_alloc_ptr
)
942 tree cond
= NULL_TREE
;
943 tree slen
= NULL_TREE
;
947 bool full_array
= false;
949 gfc_init_block (&block
);
952 for (ref
= e
->ref
; ref
; ref
= ref
->next
)
954 if (ref
->type
== REF_COMPONENT
955 && ref
->u
.c
.component
->ts
.type
== BT_CLASS
)
958 if (ref
->next
== NULL
)
962 if ((ref
== NULL
|| class_ref
== ref
)
963 && (!class_ts
.u
.derived
->components
->as
964 || class_ts
.u
.derived
->components
->as
->rank
!= -1))
967 /* Test for FULL_ARRAY. */
968 if (e
->rank
== 0 && gfc_expr_attr (e
).codimension
969 && gfc_expr_attr (e
).dimension
)
972 gfc_is_class_array_ref (e
, &full_array
);
974 /* The derived type needs to be converted to a temporary
976 tmp
= gfc_typenode_for_spec (&class_ts
);
977 var
= gfc_create_var (tmp
, "class");
980 ctree
= gfc_class_data_get (var
);
981 if (class_ts
.u
.derived
->components
->as
982 && e
->rank
!= class_ts
.u
.derived
->components
->as
->rank
)
986 tree type
= get_scalar_to_descriptor_type (parmse
->expr
,
988 gfc_add_modify (&block
, gfc_conv_descriptor_dtype (ctree
),
989 gfc_get_dtype (type
));
991 tmp
= gfc_class_data_get (parmse
->expr
);
992 if (!POINTER_TYPE_P (TREE_TYPE (tmp
)))
993 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
995 gfc_conv_descriptor_data_set (&block
, ctree
, tmp
);
998 class_array_data_assign (&block
, ctree
, parmse
->expr
, false);
1002 if (TREE_TYPE (parmse
->expr
) != TREE_TYPE (ctree
))
1003 parmse
->expr
= fold_build1_loc (input_location
, VIEW_CONVERT_EXPR
,
1004 TREE_TYPE (ctree
), parmse
->expr
);
1005 gfc_add_modify (&block
, ctree
, parmse
->expr
);
1008 /* Return the data component, except in the case of scalarized array
1009 references, where nullification of the cannot occur and so there
1011 if (!elemental
&& full_array
&& copyback
)
1013 if (class_ts
.u
.derived
->components
->as
1014 && e
->rank
!= class_ts
.u
.derived
->components
->as
->rank
)
1017 gfc_add_modify (&parmse
->post
, gfc_class_data_get (parmse
->expr
),
1018 gfc_conv_descriptor_data_get (ctree
));
1020 class_array_data_assign (&parmse
->post
, parmse
->expr
, ctree
, true);
1023 gfc_add_modify (&parmse
->post
, parmse
->expr
, ctree
);
1027 ctree
= gfc_class_vptr_get (var
);
1029 /* The vptr is the second field of the actual argument.
1030 First we have to find the corresponding class reference. */
1033 if (class_ref
== NULL
1034 && e
->symtree
&& e
->symtree
->n
.sym
->ts
.type
== BT_CLASS
)
1036 tmp
= e
->symtree
->n
.sym
->backend_decl
;
1038 if (TREE_CODE (tmp
) == FUNCTION_DECL
)
1039 tmp
= gfc_get_fake_result_decl (e
->symtree
->n
.sym
, 0);
1041 if (DECL_LANG_SPECIFIC (tmp
) && GFC_DECL_SAVED_DESCRIPTOR (tmp
))
1042 tmp
= GFC_DECL_SAVED_DESCRIPTOR (tmp
);
1044 slen
= integer_zero_node
;
1048 /* Remove everything after the last class reference, convert the
1049 expression and then recover its tailend once more. */
1051 ref
= class_ref
->next
;
1052 class_ref
->next
= NULL
;
1053 gfc_init_se (&tmpse
, NULL
);
1054 gfc_conv_expr (&tmpse
, e
);
1055 class_ref
->next
= ref
;
1057 slen
= tmpse
.string_length
;
1060 gcc_assert (tmp
!= NULL_TREE
);
1062 /* Dereference if needs be. */
1063 if (TREE_CODE (TREE_TYPE (tmp
)) == REFERENCE_TYPE
)
1064 tmp
= build_fold_indirect_ref_loc (input_location
, tmp
);
1066 vptr
= gfc_class_vptr_get (tmp
);
1067 gfc_add_modify (&block
, ctree
,
1068 fold_convert (TREE_TYPE (ctree
), vptr
));
1070 /* Return the vptr component, except in the case of scalarized array
1071 references, where the dynamic type cannot change. */
1072 if (!elemental
&& full_array
&& copyback
)
1073 gfc_add_modify (&parmse
->post
, vptr
,
1074 fold_convert (TREE_TYPE (vptr
), ctree
));
1076 /* For unlimited polymorphic objects also set the _len component. */
1077 if (class_ts
.type
== BT_CLASS
1078 && class_ts
.u
.derived
->components
1079 && class_ts
.u
.derived
->components
->ts
.u
1080 .derived
->attr
.unlimited_polymorphic
)
1082 ctree
= gfc_class_len_get (var
);
1083 if (UNLIMITED_POLY (e
))
1084 tmp
= gfc_class_len_get (tmp
);
1085 else if (e
->ts
.type
== BT_CHARACTER
)
1087 gcc_assert (slen
!= NULL_TREE
);
1091 tmp
= integer_zero_node
;
1092 gfc_add_modify (&parmse
->pre
, ctree
,
1093 fold_convert (TREE_TYPE (ctree
), tmp
));
1095 /* Return the len component, except in the case of scalarized array
1096 references, where the dynamic type cannot change. */
1097 if (!elemental
&& full_array
&& copyback
)
1098 gfc_add_modify (&parmse
->post
, tmp
,
1099 fold_convert (TREE_TYPE (tmp
), ctree
));
1106 cond
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
1107 /* parmse->pre may contain some preparatory instructions for the
1108 temporary array descriptor. Those may only be executed when the
1109 optional argument is set, therefore add parmse->pre's instructions
1110 to block, which is later guarded by an if (optional_arg_given). */
1111 gfc_add_block_to_block (&parmse
->pre
, &block
);
1112 block
.head
= parmse
->pre
.head
;
1113 parmse
->pre
.head
= NULL_TREE
;
1114 tmp
= gfc_finish_block (&block
);
1116 if (optional_alloc_ptr
)
1117 tmp2
= build_empty_stmt (input_location
);
1120 gfc_init_block (&block
);
1122 tmp2
= gfc_conv_descriptor_data_get (gfc_class_data_get (var
));
1123 gfc_add_modify (&block
, tmp2
, fold_convert (TREE_TYPE (tmp2
),
1124 null_pointer_node
));
1125 tmp2
= gfc_finish_block (&block
);
1128 tmp
= build3_loc (input_location
, COND_EXPR
, void_type_node
,
1130 gfc_add_expr_to_block (&parmse
->pre
, tmp
);
1133 gfc_add_block_to_block (&parmse
->pre
, &block
);
1135 /* Pass the address of the class object. */
1136 parmse
->expr
= gfc_build_addr_expr (NULL_TREE
, var
);
1138 if (optional
&& optional_alloc_ptr
)
1139 parmse
->expr
= build3_loc (input_location
, COND_EXPR
,
1140 TREE_TYPE (parmse
->expr
),
1142 fold_convert (TREE_TYPE (parmse
->expr
),
1143 null_pointer_node
));
1147 /* Given a class array declaration and an index, returns the address
1148 of the referenced element. */
1151 gfc_get_class_array_ref (tree index
, tree class_decl
, tree data_comp
)
1153 tree data
= data_comp
!= NULL_TREE
? data_comp
:
1154 gfc_class_data_get (class_decl
);
1155 tree size
= gfc_class_vtab_size_get (class_decl
);
1156 tree offset
= fold_build2_loc (input_location
, MULT_EXPR
,
1157 gfc_array_index_type
,
1160 data
= gfc_conv_descriptor_data_get (data
);
1161 ptr
= fold_convert (pvoid_type_node
, data
);
1162 ptr
= fold_build_pointer_plus_loc (input_location
, ptr
, offset
);
1163 return fold_convert (TREE_TYPE (data
), ptr
);
1167 /* Copies one class expression to another, assuming that if either
1168 'to' or 'from' are arrays they are packed. Should 'from' be
1169 NULL_TREE, the initialization expression for 'to' is used, assuming
1170 that the _vptr is set. */
1173 gfc_copy_class_to_class (tree from
, tree to
, tree nelems
, bool unlimited
)
1183 vec
<tree
, va_gc
> *args
;
1188 bool is_from_desc
= false, is_to_class
= false;
1191 /* To prevent warnings on uninitialized variables. */
1192 from_len
= to_len
= NULL_TREE
;
1194 if (from
!= NULL_TREE
)
1195 fcn
= gfc_class_vtab_copy_get (from
);
1197 fcn
= gfc_class_vtab_copy_get (to
);
1199 fcn_type
= TREE_TYPE (TREE_TYPE (fcn
));
1201 if (from
!= NULL_TREE
)
1203 is_from_desc
= GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (from
));
1207 from
= GFC_DECL_SAVED_DESCRIPTOR (from
);
1211 /* Check that from is a class. When the class is part of a coarray,
1212 then from is a common pointer and is to be used as is. */
1213 tmp
= POINTER_TYPE_P (TREE_TYPE (from
))
1214 ? build_fold_indirect_ref (from
) : from
;
1216 (GFC_CLASS_TYPE_P (TREE_TYPE (tmp
))
1217 || (DECL_P (tmp
) && GFC_DECL_CLASS (tmp
)))
1218 ? gfc_class_data_get (from
) : from
;
1219 is_from_desc
= GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (from_data
));
1223 from_data
= gfc_class_vtab_def_init_get (to
);
1227 if (from
!= NULL_TREE
&& unlimited
)
1228 from_len
= gfc_class_len_or_zero_get (from
);
1230 from_len
= integer_zero_node
;
1233 if (GFC_CLASS_TYPE_P (TREE_TYPE (to
)))
1236 to_data
= gfc_class_data_get (to
);
1238 to_len
= gfc_class_len_get (to
);
1241 /* When to is a BT_DERIVED and not a BT_CLASS, then to_data == to. */
1244 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (to_data
)))
1246 stmtblock_t loopbody
;
1250 tree orig_nelems
= nelems
; /* Needed for bounds check. */
1252 gfc_init_block (&body
);
1253 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
1254 gfc_array_index_type
, nelems
,
1255 gfc_index_one_node
);
1256 nelems
= gfc_evaluate_now (tmp
, &body
);
1257 index
= gfc_create_var (gfc_array_index_type
, "S");
1261 from_ref
= gfc_get_class_array_ref (index
, from
, from_data
);
1262 vec_safe_push (args
, from_ref
);
1265 vec_safe_push (args
, from_data
);
1268 to_ref
= gfc_get_class_array_ref (index
, to
, to_data
);
1271 tmp
= gfc_conv_array_data (to
);
1272 tmp
= build_fold_indirect_ref_loc (input_location
, tmp
);
1273 to_ref
= gfc_build_addr_expr (NULL_TREE
,
1274 gfc_build_array_ref (tmp
, index
, to
));
1276 vec_safe_push (args
, to_ref
);
1278 /* Add bounds check. */
1279 if ((gfc_option
.rtcheck
& GFC_RTCHECK_BOUNDS
) > 0 && is_from_desc
)
1282 const char *name
= "<<unknown>>";
1286 name
= (const char *)(DECL_NAME (to
)->identifier
.id
.str
);
1288 from_len
= gfc_conv_descriptor_size (from_data
, 1);
1289 tmp
= fold_build2_loc (input_location
, NE_EXPR
,
1290 boolean_type_node
, from_len
, orig_nelems
);
1291 msg
= xasprintf ("Array bound mismatch for dimension %d "
1292 "of array '%s' (%%ld/%%ld)",
1295 gfc_trans_runtime_check (true, false, tmp
, &body
,
1296 &gfc_current_locus
, msg
,
1297 fold_convert (long_integer_type_node
, orig_nelems
),
1298 fold_convert (long_integer_type_node
, from_len
));
1303 tmp
= build_call_vec (fcn_type
, fcn
, args
);
1305 /* Build the body of the loop. */
1306 gfc_init_block (&loopbody
);
1307 gfc_add_expr_to_block (&loopbody
, tmp
);
1309 /* Build the loop and return. */
1310 gfc_init_loopinfo (&loop
);
1312 loop
.from
[0] = gfc_index_zero_node
;
1313 loop
.loopvar
[0] = index
;
1314 loop
.to
[0] = nelems
;
1315 gfc_trans_scalarizing_loops (&loop
, &loopbody
);
1316 gfc_init_block (&ifbody
);
1317 gfc_add_block_to_block (&ifbody
, &loop
.pre
);
1318 stdcopy
= gfc_finish_block (&ifbody
);
1319 /* In initialization mode from_len is a constant zero. */
1320 if (unlimited
&& !integer_zerop (from_len
))
1322 vec_safe_push (args
, from_len
);
1323 vec_safe_push (args
, to_len
);
1324 tmp
= build_call_vec (fcn_type
, fcn
, args
);
1325 /* Build the body of the loop. */
1326 gfc_init_block (&loopbody
);
1327 gfc_add_expr_to_block (&loopbody
, tmp
);
1329 /* Build the loop and return. */
1330 gfc_init_loopinfo (&loop
);
1332 loop
.from
[0] = gfc_index_zero_node
;
1333 loop
.loopvar
[0] = index
;
1334 loop
.to
[0] = nelems
;
1335 gfc_trans_scalarizing_loops (&loop
, &loopbody
);
1336 gfc_init_block (&ifbody
);
1337 gfc_add_block_to_block (&ifbody
, &loop
.pre
);
1338 extcopy
= gfc_finish_block (&ifbody
);
1340 tmp
= fold_build2_loc (input_location
, GT_EXPR
,
1341 boolean_type_node
, from_len
,
1343 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
1344 void_type_node
, tmp
, extcopy
, stdcopy
);
1345 gfc_add_expr_to_block (&body
, tmp
);
1346 tmp
= gfc_finish_block (&body
);
1350 gfc_add_expr_to_block (&body
, stdcopy
);
1351 tmp
= gfc_finish_block (&body
);
1353 gfc_cleanup_loop (&loop
);
1357 gcc_assert (!is_from_desc
);
1358 vec_safe_push (args
, from_data
);
1359 vec_safe_push (args
, to_data
);
1360 stdcopy
= build_call_vec (fcn_type
, fcn
, args
);
1362 /* In initialization mode from_len is a constant zero. */
1363 if (unlimited
&& !integer_zerop (from_len
))
1365 vec_safe_push (args
, from_len
);
1366 vec_safe_push (args
, to_len
);
1367 extcopy
= build_call_vec (fcn_type
, fcn
, args
);
1368 tmp
= fold_build2_loc (input_location
, GT_EXPR
,
1369 boolean_type_node
, from_len
,
1371 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
1372 void_type_node
, tmp
, extcopy
, stdcopy
);
1378 /* Only copy _def_init to to_data, when it is not a NULL-pointer. */
1379 if (from
== NULL_TREE
)
1382 cond
= fold_build2_loc (input_location
, NE_EXPR
,
1384 from_data
, null_pointer_node
);
1385 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
1386 void_type_node
, cond
,
1387 tmp
, build_empty_stmt (input_location
));
1395 gfc_trans_class_array_init_assign (gfc_expr
*rhs
, gfc_expr
*lhs
, gfc_expr
*obj
)
1397 gfc_actual_arglist
*actual
;
1402 actual
= gfc_get_actual_arglist ();
1403 actual
->expr
= gfc_copy_expr (rhs
);
1404 actual
->next
= gfc_get_actual_arglist ();
1405 actual
->next
->expr
= gfc_copy_expr (lhs
);
1406 ppc
= gfc_copy_expr (obj
);
1407 gfc_add_vptr_component (ppc
);
1408 gfc_add_component_ref (ppc
, "_copy");
1409 ppc_code
= gfc_get_code (EXEC_CALL
);
1410 ppc_code
->resolved_sym
= ppc
->symtree
->n
.sym
;
1411 /* Although '_copy' is set to be elemental in class.c, it is
1412 not staying that way. Find out why, sometime.... */
1413 ppc_code
->resolved_sym
->attr
.elemental
= 1;
1414 ppc_code
->ext
.actual
= actual
;
1415 ppc_code
->expr1
= ppc
;
1416 /* Since '_copy' is elemental, the scalarizer will take care
1417 of arrays in gfc_trans_call. */
1418 res
= gfc_trans_call (ppc_code
, false, NULL
, NULL
, false);
1419 gfc_free_statements (ppc_code
);
1421 if (UNLIMITED_POLY(obj
))
1423 /* Check if rhs is non-NULL. */
1425 gfc_init_se (&src
, NULL
);
1426 gfc_conv_expr (&src
, rhs
);
1427 src
.expr
= gfc_build_addr_expr (NULL_TREE
, src
.expr
);
1428 tree cond
= fold_build2_loc (input_location
, NE_EXPR
, boolean_type_node
,
1429 src
.expr
, fold_convert (TREE_TYPE (src
.expr
),
1430 null_pointer_node
));
1431 res
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (res
), cond
, res
,
1432 build_empty_stmt (input_location
));
1438 /* Special case for initializing a polymorphic dummy with INTENT(OUT).
1439 A MEMCPY is needed to copy the full data from the default initializer
1440 of the dynamic type. */
1443 gfc_trans_class_init_assign (gfc_code
*code
)
1447 gfc_se dst
,src
,memsz
;
1448 gfc_expr
*lhs
, *rhs
, *sz
;
1450 gfc_start_block (&block
);
1452 lhs
= gfc_copy_expr (code
->expr1
);
1453 gfc_add_data_component (lhs
);
1455 rhs
= gfc_copy_expr (code
->expr1
);
1456 gfc_add_vptr_component (rhs
);
1458 /* Make sure that the component backend_decls have been built, which
1459 will not have happened if the derived types concerned have not
1461 gfc_get_derived_type (rhs
->ts
.u
.derived
);
1462 gfc_add_def_init_component (rhs
);
1463 /* The _def_init is always scalar. */
1466 if (code
->expr1
->ts
.type
== BT_CLASS
1467 && CLASS_DATA (code
->expr1
)->attr
.dimension
)
1469 gfc_array_spec
*tmparr
= gfc_get_array_spec ();
1470 *tmparr
= *CLASS_DATA (code
->expr1
)->as
;
1471 gfc_add_full_array_ref (lhs
, tmparr
);
1472 tmp
= gfc_trans_class_array_init_assign (rhs
, lhs
, code
->expr1
);
1476 sz
= gfc_copy_expr (code
->expr1
);
1477 gfc_add_vptr_component (sz
);
1478 gfc_add_size_component (sz
);
1480 gfc_init_se (&dst
, NULL
);
1481 gfc_init_se (&src
, NULL
);
1482 gfc_init_se (&memsz
, NULL
);
1483 gfc_conv_expr (&dst
, lhs
);
1484 gfc_conv_expr (&src
, rhs
);
1485 gfc_conv_expr (&memsz
, sz
);
1486 gfc_add_block_to_block (&block
, &src
.pre
);
1487 src
.expr
= gfc_build_addr_expr (NULL_TREE
, src
.expr
);
1489 tmp
= gfc_build_memcpy_call (dst
.expr
, src
.expr
, memsz
.expr
);
1491 if (UNLIMITED_POLY(code
->expr1
))
1493 /* Check if _def_init is non-NULL. */
1494 tree cond
= fold_build2_loc (input_location
, NE_EXPR
,
1495 boolean_type_node
, src
.expr
,
1496 fold_convert (TREE_TYPE (src
.expr
),
1497 null_pointer_node
));
1498 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (tmp
), cond
,
1499 tmp
, build_empty_stmt (input_location
));
1503 if (code
->expr1
->symtree
->n
.sym
->attr
.optional
1504 || code
->expr1
->symtree
->n
.sym
->ns
->proc_name
->attr
.entry_master
)
1506 tree present
= gfc_conv_expr_present (code
->expr1
->symtree
->n
.sym
);
1507 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (tmp
),
1509 build_empty_stmt (input_location
));
1512 gfc_add_expr_to_block (&block
, tmp
);
1514 return gfc_finish_block (&block
);
1518 /* End of prototype trans-class.c */
1522 realloc_lhs_warning (bt type
, bool array
, locus
*where
)
1524 if (array
&& type
!= BT_CLASS
&& type
!= BT_DERIVED
&& warn_realloc_lhs
)
1525 gfc_warning (OPT_Wrealloc_lhs
,
1526 "Code for reallocating the allocatable array at %L will "
1528 else if (warn_realloc_lhs_all
)
1529 gfc_warning (OPT_Wrealloc_lhs_all
,
1530 "Code for reallocating the allocatable variable at %L "
1531 "will be added", where
);
1535 static void gfc_apply_interface_mapping_to_expr (gfc_interface_mapping
*,
1538 /* Copy the scalarization loop variables. */
1541 gfc_copy_se_loopvars (gfc_se
* dest
, gfc_se
* src
)
1544 dest
->loop
= src
->loop
;
1548 /* Initialize a simple expression holder.
1550 Care must be taken when multiple se are created with the same parent.
1551 The child se must be kept in sync. The easiest way is to delay creation
1552 of a child se until after after the previous se has been translated. */
1555 gfc_init_se (gfc_se
* se
, gfc_se
* parent
)
1557 memset (se
, 0, sizeof (gfc_se
));
1558 gfc_init_block (&se
->pre
);
1559 gfc_init_block (&se
->post
);
1561 se
->parent
= parent
;
1564 gfc_copy_se_loopvars (se
, parent
);
1568 /* Advances to the next SS in the chain. Use this rather than setting
1569 se->ss = se->ss->next because all the parents needs to be kept in sync.
1573 gfc_advance_se_ss_chain (gfc_se
* se
)
1578 gcc_assert (se
!= NULL
&& se
->ss
!= NULL
&& se
->ss
!= gfc_ss_terminator
);
1581 /* Walk down the parent chain. */
1584 /* Simple consistency check. */
1585 gcc_assert (p
->parent
== NULL
|| p
->parent
->ss
== p
->ss
1586 || p
->parent
->ss
->nested_ss
== p
->ss
);
1588 /* If we were in a nested loop, the next scalarized expression can be
1589 on the parent ss' next pointer. Thus we should not take the next
1590 pointer blindly, but rather go up one nest level as long as next
1591 is the end of chain. */
1593 while (ss
->next
== gfc_ss_terminator
&& ss
->parent
!= NULL
)
1603 /* Ensures the result of the expression as either a temporary variable
1604 or a constant so that it can be used repeatedly. */
1607 gfc_make_safe_expr (gfc_se
* se
)
1611 if (CONSTANT_CLASS_P (se
->expr
))
1614 /* We need a temporary for this result. */
1615 var
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
1616 gfc_add_modify (&se
->pre
, var
, se
->expr
);
1621 /* Return an expression which determines if a dummy parameter is present.
1622 Also used for arguments to procedures with multiple entry points. */
1625 gfc_conv_expr_present (gfc_symbol
* sym
)
1629 gcc_assert (sym
->attr
.dummy
);
1630 decl
= gfc_get_symbol_decl (sym
);
1632 /* Intrinsic scalars with VALUE attribute which are passed by value
1633 use a hidden argument to denote the present status. */
1634 if (sym
->attr
.value
&& sym
->ts
.type
!= BT_CHARACTER
1635 && sym
->ts
.type
!= BT_CLASS
&& sym
->ts
.type
!= BT_DERIVED
1636 && !sym
->attr
.dimension
)
1638 char name
[GFC_MAX_SYMBOL_LEN
+ 2];
1641 gcc_assert (TREE_CODE (decl
) == PARM_DECL
);
1643 strcpy (&name
[1], sym
->name
);
1644 tree_name
= get_identifier (name
);
1646 /* Walk function argument list to find hidden arg. */
1647 cond
= DECL_ARGUMENTS (DECL_CONTEXT (decl
));
1648 for ( ; cond
!= NULL_TREE
; cond
= TREE_CHAIN (cond
))
1649 if (DECL_NAME (cond
) == tree_name
)
1656 if (TREE_CODE (decl
) != PARM_DECL
)
1658 /* Array parameters use a temporary descriptor, we want the real
1660 gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (decl
))
1661 || GFC_ARRAY_TYPE_P (TREE_TYPE (decl
)));
1662 decl
= GFC_DECL_SAVED_DESCRIPTOR (decl
);
1665 cond
= fold_build2_loc (input_location
, NE_EXPR
, boolean_type_node
, decl
,
1666 fold_convert (TREE_TYPE (decl
), null_pointer_node
));
1668 /* Fortran 2008 allows to pass null pointers and non-associated pointers
1669 as actual argument to denote absent dummies. For array descriptors,
1670 we thus also need to check the array descriptor. For BT_CLASS, it
1671 can also occur for scalars and F2003 due to type->class wrapping and
1672 class->class wrapping. Note further that BT_CLASS always uses an
1673 array descriptor for arrays, also for explicit-shape/assumed-size. */
1675 if (!sym
->attr
.allocatable
1676 && ((sym
->ts
.type
!= BT_CLASS
&& !sym
->attr
.pointer
)
1677 || (sym
->ts
.type
== BT_CLASS
1678 && !CLASS_DATA (sym
)->attr
.allocatable
1679 && !CLASS_DATA (sym
)->attr
.class_pointer
))
1680 && ((gfc_option
.allow_std
& GFC_STD_F2008
) != 0
1681 || sym
->ts
.type
== BT_CLASS
))
1685 if ((sym
->as
&& (sym
->as
->type
== AS_ASSUMED_SHAPE
1686 || sym
->as
->type
== AS_ASSUMED_RANK
1687 || sym
->attr
.codimension
))
1688 || (sym
->ts
.type
== BT_CLASS
&& CLASS_DATA (sym
)->as
))
1690 tmp
= build_fold_indirect_ref_loc (input_location
, decl
);
1691 if (sym
->ts
.type
== BT_CLASS
)
1692 tmp
= gfc_class_data_get (tmp
);
1693 tmp
= gfc_conv_array_data (tmp
);
1695 else if (sym
->ts
.type
== BT_CLASS
)
1696 tmp
= gfc_class_data_get (decl
);
1700 if (tmp
!= NULL_TREE
)
1702 tmp
= fold_build2_loc (input_location
, NE_EXPR
, boolean_type_node
, tmp
,
1703 fold_convert (TREE_TYPE (tmp
), null_pointer_node
));
1704 cond
= fold_build2_loc (input_location
, TRUTH_ANDIF_EXPR
,
1705 boolean_type_node
, cond
, tmp
);
1713 /* Converts a missing, dummy argument into a null or zero. */
1716 gfc_conv_missing_dummy (gfc_se
* se
, gfc_expr
* arg
, gfc_typespec ts
, int kind
)
1721 present
= gfc_conv_expr_present (arg
->symtree
->n
.sym
);
1725 /* Create a temporary and convert it to the correct type. */
1726 tmp
= gfc_get_int_type (kind
);
1727 tmp
= fold_convert (tmp
, build_fold_indirect_ref_loc (input_location
,
1730 /* Test for a NULL value. */
1731 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (tmp
), present
,
1732 tmp
, fold_convert (TREE_TYPE (tmp
), integer_one_node
));
1733 tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
1734 se
->expr
= gfc_build_addr_expr (NULL_TREE
, tmp
);
1738 tmp
= build3_loc (input_location
, COND_EXPR
, TREE_TYPE (se
->expr
),
1740 build_zero_cst (TREE_TYPE (se
->expr
)));
1741 tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
1745 if (ts
.type
== BT_CHARACTER
)
1747 tmp
= build_int_cst (gfc_charlen_type_node
, 0);
1748 tmp
= fold_build3_loc (input_location
, COND_EXPR
, gfc_charlen_type_node
,
1749 present
, se
->string_length
, tmp
);
1750 tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
1751 se
->string_length
= tmp
;
1757 /* Get the character length of an expression, looking through gfc_refs
1761 gfc_get_expr_charlen (gfc_expr
*e
)
1766 gcc_assert (e
->expr_type
== EXPR_VARIABLE
1767 && e
->ts
.type
== BT_CHARACTER
);
1769 length
= NULL
; /* To silence compiler warning. */
1771 if (is_subref_array (e
) && e
->ts
.u
.cl
->length
)
1774 gfc_init_se (&tmpse
, NULL
);
1775 gfc_conv_expr_type (&tmpse
, e
->ts
.u
.cl
->length
, gfc_charlen_type_node
);
1776 e
->ts
.u
.cl
->backend_decl
= tmpse
.expr
;
1780 /* First candidate: if the variable is of type CHARACTER, the
1781 expression's length could be the length of the character
1783 if (e
->symtree
->n
.sym
->ts
.type
== BT_CHARACTER
)
1784 length
= e
->symtree
->n
.sym
->ts
.u
.cl
->backend_decl
;
1786 /* Look through the reference chain for component references. */
1787 for (r
= e
->ref
; r
; r
= r
->next
)
1792 if (r
->u
.c
.component
->ts
.type
== BT_CHARACTER
)
1793 length
= r
->u
.c
.component
->ts
.u
.cl
->backend_decl
;
1801 /* We should never got substring references here. These will be
1802 broken down by the scalarizer. */
1808 gcc_assert (length
!= NULL
);
1813 /* Return for an expression the backend decl of the coarray. */
1816 gfc_get_tree_for_caf_expr (gfc_expr
*expr
)
1822 gcc_assert (expr
&& expr
->expr_type
== EXPR_VARIABLE
);
1824 /* Not-implemented diagnostic. */
1825 if (expr
->symtree
->n
.sym
->ts
.type
== BT_CLASS
1826 && UNLIMITED_POLY (expr
->symtree
->n
.sym
)
1827 && CLASS_DATA (expr
->symtree
->n
.sym
)->attr
.codimension
)
1828 gfc_error ("Sorry, coindexed access to an unlimited polymorphic object at "
1829 "%L is not supported", &expr
->where
);
1831 for (ref
= expr
->ref
; ref
; ref
= ref
->next
)
1832 if (ref
->type
== REF_COMPONENT
)
1834 if (ref
->u
.c
.component
->ts
.type
== BT_CLASS
1835 && UNLIMITED_POLY (ref
->u
.c
.component
)
1836 && CLASS_DATA (ref
->u
.c
.component
)->attr
.codimension
)
1837 gfc_error ("Sorry, coindexed access to an unlimited polymorphic "
1838 "component at %L is not supported", &expr
->where
);
1841 /* Make sure the backend_decl is present before accessing it. */
1842 caf_decl
= expr
->symtree
->n
.sym
->backend_decl
== NULL_TREE
1843 ? gfc_get_symbol_decl (expr
->symtree
->n
.sym
)
1844 : expr
->symtree
->n
.sym
->backend_decl
;
1846 if (expr
->symtree
->n
.sym
->ts
.type
== BT_CLASS
)
1848 if (expr
->ref
&& expr
->ref
->type
== REF_ARRAY
)
1850 caf_decl
= gfc_class_data_get (caf_decl
);
1851 if (CLASS_DATA (expr
->symtree
->n
.sym
)->attr
.codimension
)
1854 for (ref
= expr
->ref
; ref
; ref
= ref
->next
)
1856 if (ref
->type
== REF_COMPONENT
1857 && strcmp (ref
->u
.c
.component
->name
, "_data") != 0)
1859 caf_decl
= gfc_class_data_get (caf_decl
);
1860 if (CLASS_DATA (expr
->symtree
->n
.sym
)->attr
.codimension
)
1864 else if (ref
->type
== REF_ARRAY
&& ref
->u
.ar
.dimen
)
1868 if (expr
->symtree
->n
.sym
->attr
.codimension
)
1871 /* The following code assumes that the coarray is a component reachable via
1872 only scalar components/variables; the Fortran standard guarantees this. */
1874 for (ref
= expr
->ref
; ref
; ref
= ref
->next
)
1875 if (ref
->type
== REF_COMPONENT
)
1877 gfc_component
*comp
= ref
->u
.c
.component
;
1879 if (POINTER_TYPE_P (TREE_TYPE (caf_decl
)))
1880 caf_decl
= build_fold_indirect_ref_loc (input_location
, caf_decl
);
1881 caf_decl
= fold_build3_loc (input_location
, COMPONENT_REF
,
1882 TREE_TYPE (comp
->backend_decl
), caf_decl
,
1883 comp
->backend_decl
, NULL_TREE
);
1884 if (comp
->ts
.type
== BT_CLASS
)
1886 caf_decl
= gfc_class_data_get (caf_decl
);
1887 if (CLASS_DATA (comp
)->attr
.codimension
)
1893 if (comp
->attr
.codimension
)
1899 gcc_assert (found
&& caf_decl
);
1904 /* Obtain the Coarray token - and optionally also the offset. */
1907 gfc_get_caf_token_offset (gfc_se
*se
, tree
*token
, tree
*offset
, tree caf_decl
,
1908 tree se_expr
, gfc_expr
*expr
)
1912 /* Coarray token. */
1913 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (caf_decl
)))
1915 gcc_assert (GFC_TYPE_ARRAY_AKIND (TREE_TYPE (caf_decl
))
1916 == GFC_ARRAY_ALLOCATABLE
1917 || expr
->symtree
->n
.sym
->attr
.select_type_temporary
);
1918 *token
= gfc_conv_descriptor_token (caf_decl
);
1920 else if (DECL_LANG_SPECIFIC (caf_decl
)
1921 && GFC_DECL_TOKEN (caf_decl
) != NULL_TREE
)
1922 *token
= GFC_DECL_TOKEN (caf_decl
);
1925 gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (caf_decl
))
1926 && GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (caf_decl
)) != NULL_TREE
);
1927 *token
= GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (caf_decl
));
1933 /* Offset between the coarray base address and the address wanted. */
1934 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (caf_decl
))
1935 && (GFC_TYPE_ARRAY_AKIND (TREE_TYPE (caf_decl
)) == GFC_ARRAY_ALLOCATABLE
1936 || GFC_TYPE_ARRAY_AKIND (TREE_TYPE (caf_decl
)) == GFC_ARRAY_POINTER
))
1937 *offset
= build_int_cst (gfc_array_index_type
, 0);
1938 else if (DECL_LANG_SPECIFIC (caf_decl
)
1939 && GFC_DECL_CAF_OFFSET (caf_decl
) != NULL_TREE
)
1940 *offset
= GFC_DECL_CAF_OFFSET (caf_decl
);
1941 else if (GFC_TYPE_ARRAY_CAF_OFFSET (TREE_TYPE (caf_decl
)) != NULL_TREE
)
1942 *offset
= GFC_TYPE_ARRAY_CAF_OFFSET (TREE_TYPE (caf_decl
));
1944 *offset
= build_int_cst (gfc_array_index_type
, 0);
1946 if (POINTER_TYPE_P (TREE_TYPE (se_expr
))
1947 && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (TREE_TYPE (se_expr
))))
1949 tmp
= build_fold_indirect_ref_loc (input_location
, se_expr
);
1950 tmp
= gfc_conv_descriptor_data_get (tmp
);
1952 else if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se_expr
)))
1953 tmp
= gfc_conv_descriptor_data_get (se_expr
);
1956 gcc_assert (POINTER_TYPE_P (TREE_TYPE (se_expr
)));
1960 *offset
= fold_build2_loc (input_location
, PLUS_EXPR
, gfc_array_index_type
,
1961 *offset
, fold_convert (gfc_array_index_type
, tmp
));
1963 if (expr
->symtree
->n
.sym
->ts
.type
== BT_DERIVED
1964 && expr
->symtree
->n
.sym
->attr
.codimension
1965 && expr
->symtree
->n
.sym
->ts
.u
.derived
->attr
.alloc_comp
)
1967 gfc_expr
*base_expr
= gfc_copy_expr (expr
);
1968 gfc_ref
*ref
= base_expr
->ref
;
1971 // Iterate through the refs until the last one.
1975 if (ref
->type
== REF_ARRAY
1976 && ref
->u
.ar
.type
!= AR_FULL
)
1978 const int ranksum
= ref
->u
.ar
.dimen
+ ref
->u
.ar
.codimen
;
1980 for (i
= 0; i
< ranksum
; ++i
)
1982 ref
->u
.ar
.start
[i
] = NULL
;
1983 ref
->u
.ar
.end
[i
] = NULL
;
1985 ref
->u
.ar
.type
= AR_FULL
;
1987 gfc_init_se (&base_se
, NULL
);
1988 if (gfc_caf_attr (base_expr
).dimension
)
1990 gfc_conv_expr_descriptor (&base_se
, base_expr
);
1991 tmp
= gfc_conv_descriptor_data_get (base_se
.expr
);
1995 gfc_conv_expr (&base_se
, base_expr
);
1999 gfc_free_expr (base_expr
);
2000 gfc_add_block_to_block (&se
->pre
, &base_se
.pre
);
2001 gfc_add_block_to_block (&se
->post
, &base_se
.post
);
2003 else if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (caf_decl
)))
2004 tmp
= gfc_conv_descriptor_data_get (caf_decl
);
2007 gcc_assert (POINTER_TYPE_P (TREE_TYPE (caf_decl
)));
2011 *offset
= fold_build2_loc (input_location
, MINUS_EXPR
, gfc_array_index_type
,
2012 fold_convert (gfc_array_index_type
, *offset
),
2013 fold_convert (gfc_array_index_type
, tmp
));
2017 /* Convert the coindex of a coarray into an image index; the result is
2018 image_num = (idx(1)-lcobound(1)+1) + (idx(2)-lcobound(2))*extent(1)
2019 + (idx(3)-lcobound(3))*extend(1)*extent(2) + ... */
2022 gfc_caf_get_image_index (stmtblock_t
*block
, gfc_expr
*e
, tree desc
)
2025 tree lbound
, ubound
, extent
, tmp
, img_idx
;
2029 for (ref
= e
->ref
; ref
; ref
= ref
->next
)
2030 if (ref
->type
== REF_ARRAY
&& ref
->u
.ar
.codimen
> 0)
2032 gcc_assert (ref
!= NULL
);
2034 if (ref
->u
.ar
.dimen_type
[ref
->u
.ar
.dimen
] == DIMEN_THIS_IMAGE
)
2036 return build_call_expr_loc (input_location
, gfor_fndecl_caf_this_image
, 1,
2040 img_idx
= integer_zero_node
;
2041 extent
= integer_one_node
;
2042 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (desc
)))
2043 for (i
= ref
->u
.ar
.dimen
; i
< ref
->u
.ar
.dimen
+ ref
->u
.ar
.codimen
; i
++)
2045 gfc_init_se (&se
, NULL
);
2046 gfc_conv_expr_type (&se
, ref
->u
.ar
.start
[i
], integer_type_node
);
2047 gfc_add_block_to_block (block
, &se
.pre
);
2048 lbound
= gfc_conv_descriptor_lbound_get (desc
, gfc_rank_cst
[i
]);
2049 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
2050 integer_type_node
, se
.expr
,
2051 fold_convert(integer_type_node
, lbound
));
2052 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, integer_type_node
,
2054 img_idx
= fold_build2_loc (input_location
, PLUS_EXPR
, integer_type_node
,
2056 if (i
< ref
->u
.ar
.dimen
+ ref
->u
.ar
.codimen
- 1)
2058 ubound
= gfc_conv_descriptor_ubound_get (desc
, gfc_rank_cst
[i
]);
2059 tmp
= gfc_conv_array_extent_dim (lbound
, ubound
, NULL
);
2060 tmp
= fold_convert (integer_type_node
, tmp
);
2061 extent
= fold_build2_loc (input_location
, MULT_EXPR
,
2062 integer_type_node
, extent
, tmp
);
2066 for (i
= ref
->u
.ar
.dimen
; i
< ref
->u
.ar
.dimen
+ ref
->u
.ar
.codimen
; i
++)
2068 gfc_init_se (&se
, NULL
);
2069 gfc_conv_expr_type (&se
, ref
->u
.ar
.start
[i
], integer_type_node
);
2070 gfc_add_block_to_block (block
, &se
.pre
);
2071 lbound
= GFC_TYPE_ARRAY_LBOUND (TREE_TYPE (desc
), i
);
2072 lbound
= fold_convert (integer_type_node
, lbound
);
2073 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
2074 integer_type_node
, se
.expr
, lbound
);
2075 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, integer_type_node
,
2077 img_idx
= fold_build2_loc (input_location
, PLUS_EXPR
, integer_type_node
,
2079 if (i
< ref
->u
.ar
.dimen
+ ref
->u
.ar
.codimen
- 1)
2081 ubound
= GFC_TYPE_ARRAY_UBOUND (TREE_TYPE (desc
), i
);
2082 ubound
= fold_convert (integer_type_node
, ubound
);
2083 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
2084 integer_type_node
, ubound
, lbound
);
2085 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
, integer_type_node
,
2086 tmp
, integer_one_node
);
2087 extent
= fold_build2_loc (input_location
, MULT_EXPR
,
2088 integer_type_node
, extent
, tmp
);
2091 img_idx
= fold_build2_loc (input_location
, PLUS_EXPR
, integer_type_node
,
2092 img_idx
, integer_one_node
);
2097 /* For each character array constructor subexpression without a ts.u.cl->length,
2098 replace it by its first element (if there aren't any elements, the length
2099 should already be set to zero). */
2102 flatten_array_ctors_without_strlen (gfc_expr
* e
)
2104 gfc_actual_arglist
* arg
;
2110 switch (e
->expr_type
)
2114 flatten_array_ctors_without_strlen (e
->value
.op
.op1
);
2115 flatten_array_ctors_without_strlen (e
->value
.op
.op2
);
2119 /* TODO: Implement as with EXPR_FUNCTION when needed. */
2123 for (arg
= e
->value
.function
.actual
; arg
; arg
= arg
->next
)
2124 flatten_array_ctors_without_strlen (arg
->expr
);
2129 /* We've found what we're looking for. */
2130 if (e
->ts
.type
== BT_CHARACTER
&& !e
->ts
.u
.cl
->length
)
2135 gcc_assert (e
->value
.constructor
);
2137 c
= gfc_constructor_first (e
->value
.constructor
);
2141 flatten_array_ctors_without_strlen (new_expr
);
2142 gfc_replace_expr (e
, new_expr
);
2146 /* Otherwise, fall through to handle constructor elements. */
2148 case EXPR_STRUCTURE
:
2149 for (c
= gfc_constructor_first (e
->value
.constructor
);
2150 c
; c
= gfc_constructor_next (c
))
2151 flatten_array_ctors_without_strlen (c
->expr
);
2161 /* Generate code to initialize a string length variable. Returns the
2162 value. For array constructors, cl->length might be NULL and in this case,
2163 the first element of the constructor is needed. expr is the original
2164 expression so we can access it but can be NULL if this is not needed. */
2167 gfc_conv_string_length (gfc_charlen
* cl
, gfc_expr
* expr
, stmtblock_t
* pblock
)
2171 gfc_init_se (&se
, NULL
);
2173 if (!cl
->length
&& cl
->backend_decl
&& VAR_P (cl
->backend_decl
))
2176 /* If cl->length is NULL, use gfc_conv_expr to obtain the string length but
2177 "flatten" array constructors by taking their first element; all elements
2178 should be the same length or a cl->length should be present. */
2181 gfc_expr
* expr_flat
;
2183 expr_flat
= gfc_copy_expr (expr
);
2184 flatten_array_ctors_without_strlen (expr_flat
);
2185 gfc_resolve_expr (expr_flat
);
2187 gfc_conv_expr (&se
, expr_flat
);
2188 gfc_add_block_to_block (pblock
, &se
.pre
);
2189 cl
->backend_decl
= convert (gfc_charlen_type_node
, se
.string_length
);
2191 gfc_free_expr (expr_flat
);
2195 /* Convert cl->length. */
2197 gcc_assert (cl
->length
);
2199 gfc_conv_expr_type (&se
, cl
->length
, gfc_charlen_type_node
);
2200 se
.expr
= fold_build2_loc (input_location
, MAX_EXPR
, gfc_charlen_type_node
,
2201 se
.expr
, build_int_cst (gfc_charlen_type_node
, 0));
2202 gfc_add_block_to_block (pblock
, &se
.pre
);
2204 if (cl
->backend_decl
)
2205 gfc_add_modify (pblock
, cl
->backend_decl
, se
.expr
);
2207 cl
->backend_decl
= gfc_evaluate_now (se
.expr
, pblock
);
2212 gfc_conv_substring (gfc_se
* se
, gfc_ref
* ref
, int kind
,
2213 const char *name
, locus
*where
)
2223 type
= gfc_get_character_type (kind
, ref
->u
.ss
.length
);
2224 type
= build_pointer_type (type
);
2226 gfc_init_se (&start
, se
);
2227 gfc_conv_expr_type (&start
, ref
->u
.ss
.start
, gfc_charlen_type_node
);
2228 gfc_add_block_to_block (&se
->pre
, &start
.pre
);
2230 if (integer_onep (start
.expr
))
2231 gfc_conv_string_parameter (se
);
2236 /* Avoid multiple evaluation of substring start. */
2237 if (!CONSTANT_CLASS_P (tmp
) && !DECL_P (tmp
))
2238 start
.expr
= gfc_evaluate_now (start
.expr
, &se
->pre
);
2240 /* Change the start of the string. */
2241 if (TYPE_STRING_FLAG (TREE_TYPE (se
->expr
)))
2244 tmp
= build_fold_indirect_ref_loc (input_location
,
2246 tmp
= gfc_build_array_ref (tmp
, start
.expr
, NULL
);
2247 se
->expr
= gfc_build_addr_expr (type
, tmp
);
2250 /* Length = end + 1 - start. */
2251 gfc_init_se (&end
, se
);
2252 if (ref
->u
.ss
.end
== NULL
)
2253 end
.expr
= se
->string_length
;
2256 gfc_conv_expr_type (&end
, ref
->u
.ss
.end
, gfc_charlen_type_node
);
2257 gfc_add_block_to_block (&se
->pre
, &end
.pre
);
2261 if (!CONSTANT_CLASS_P (tmp
) && !DECL_P (tmp
))
2262 end
.expr
= gfc_evaluate_now (end
.expr
, &se
->pre
);
2264 if (gfc_option
.rtcheck
& GFC_RTCHECK_BOUNDS
)
2266 tree nonempty
= fold_build2_loc (input_location
, LE_EXPR
,
2267 boolean_type_node
, start
.expr
,
2270 /* Check lower bound. */
2271 fault
= fold_build2_loc (input_location
, LT_EXPR
, boolean_type_node
,
2273 build_int_cst (gfc_charlen_type_node
, 1));
2274 fault
= fold_build2_loc (input_location
, TRUTH_ANDIF_EXPR
,
2275 boolean_type_node
, nonempty
, fault
);
2277 msg
= xasprintf ("Substring out of bounds: lower bound (%%ld) of '%s' "
2278 "is less than one", name
);
2280 msg
= xasprintf ("Substring out of bounds: lower bound (%%ld) "
2281 "is less than one");
2282 gfc_trans_runtime_check (true, false, fault
, &se
->pre
, where
, msg
,
2283 fold_convert (long_integer_type_node
,
2287 /* Check upper bound. */
2288 fault
= fold_build2_loc (input_location
, GT_EXPR
, boolean_type_node
,
2289 end
.expr
, se
->string_length
);
2290 fault
= fold_build2_loc (input_location
, TRUTH_ANDIF_EXPR
,
2291 boolean_type_node
, nonempty
, fault
);
2293 msg
= xasprintf ("Substring out of bounds: upper bound (%%ld) of '%s' "
2294 "exceeds string length (%%ld)", name
);
2296 msg
= xasprintf ("Substring out of bounds: upper bound (%%ld) "
2297 "exceeds string length (%%ld)");
2298 gfc_trans_runtime_check (true, false, fault
, &se
->pre
, where
, msg
,
2299 fold_convert (long_integer_type_node
, end
.expr
),
2300 fold_convert (long_integer_type_node
,
2301 se
->string_length
));
2305 /* Try to calculate the length from the start and end expressions. */
2307 && gfc_dep_difference (ref
->u
.ss
.end
, ref
->u
.ss
.start
, &length
))
2311 i_len
= mpz_get_si (length
) + 1;
2315 tmp
= build_int_cst (gfc_charlen_type_node
, i_len
);
2316 mpz_clear (length
); /* Was initialized by gfc_dep_difference. */
2320 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
, gfc_charlen_type_node
,
2321 end
.expr
, start
.expr
);
2322 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
, gfc_charlen_type_node
,
2323 build_int_cst (gfc_charlen_type_node
, 1), tmp
);
2324 tmp
= fold_build2_loc (input_location
, MAX_EXPR
, gfc_charlen_type_node
,
2325 tmp
, build_int_cst (gfc_charlen_type_node
, 0));
2328 se
->string_length
= tmp
;
2332 /* Convert a derived type component reference. */
2335 gfc_conv_component_ref (gfc_se
* se
, gfc_ref
* ref
)
2343 c
= ref
->u
.c
.component
;
2345 if (c
->backend_decl
== NULL_TREE
2346 && ref
->u
.c
.sym
!= NULL
)
2347 gfc_get_derived_type (ref
->u
.c
.sym
);
2349 field
= c
->backend_decl
;
2350 gcc_assert (field
&& TREE_CODE (field
) == FIELD_DECL
);
2352 context
= DECL_FIELD_CONTEXT (field
);
2354 /* Components can correspond to fields of different containing
2355 types, as components are created without context, whereas
2356 a concrete use of a component has the type of decl as context.
2357 So, if the type doesn't match, we search the corresponding
2358 FIELD_DECL in the parent type. To not waste too much time
2359 we cache this result in norestrict_decl.
2360 On the other hand, if the context is a UNION or a MAP (a
2361 RECORD_TYPE within a UNION_TYPE) always use the given FIELD_DECL. */
2363 if (context
!= TREE_TYPE (decl
)
2364 && !( TREE_CODE (TREE_TYPE (field
)) == UNION_TYPE
/* Field is union */
2365 || TREE_CODE (context
) == UNION_TYPE
)) /* Field is map */
2367 tree f2
= c
->norestrict_decl
;
2368 if (!f2
|| DECL_FIELD_CONTEXT (f2
) != TREE_TYPE (decl
))
2369 for (f2
= TYPE_FIELDS (TREE_TYPE (decl
)); f2
; f2
= DECL_CHAIN (f2
))
2370 if (TREE_CODE (f2
) == FIELD_DECL
2371 && DECL_NAME (f2
) == DECL_NAME (field
))
2374 c
->norestrict_decl
= f2
;
2378 if (ref
->u
.c
.sym
&& ref
->u
.c
.sym
->ts
.type
== BT_CLASS
2379 && strcmp ("_data", c
->name
) == 0)
2381 /* Found a ref to the _data component. Store the associated ref to
2382 the vptr in se->class_vptr. */
2383 se
->class_vptr
= gfc_class_vptr_get (decl
);
2386 se
->class_vptr
= NULL_TREE
;
2388 tmp
= fold_build3_loc (input_location
, COMPONENT_REF
, TREE_TYPE (field
),
2389 decl
, field
, NULL_TREE
);
2393 /* Allocatable deferred char arrays are to be handled by the gfc_deferred_
2394 strlen () conditional below. */
2395 if (c
->ts
.type
== BT_CHARACTER
&& !c
->attr
.proc_pointer
2396 && !(c
->attr
.allocatable
&& c
->ts
.deferred
))
2398 tmp
= c
->ts
.u
.cl
->backend_decl
;
2399 /* Components must always be constant length. */
2400 gcc_assert (tmp
&& INTEGER_CST_P (tmp
));
2401 se
->string_length
= tmp
;
2404 if (gfc_deferred_strlen (c
, &field
))
2406 tmp
= fold_build3_loc (input_location
, COMPONENT_REF
,
2408 decl
, field
, NULL_TREE
);
2409 se
->string_length
= tmp
;
2412 if (((c
->attr
.pointer
|| c
->attr
.allocatable
)
2413 && (!c
->attr
.dimension
&& !c
->attr
.codimension
)
2414 && c
->ts
.type
!= BT_CHARACTER
)
2415 || c
->attr
.proc_pointer
)
2416 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2421 /* This function deals with component references to components of the
2422 parent type for derived type extensions. */
2424 conv_parent_component_references (gfc_se
* se
, gfc_ref
* ref
)
2432 c
= ref
->u
.c
.component
;
2434 /* Return if the component is in the parent type. */
2435 for (cmp
= dt
->components
; cmp
; cmp
= cmp
->next
)
2436 if (strcmp (c
->name
, cmp
->name
) == 0)
2439 /* Build a gfc_ref to recursively call gfc_conv_component_ref. */
2440 parent
.type
= REF_COMPONENT
;
2442 parent
.u
.c
.sym
= dt
;
2443 parent
.u
.c
.component
= dt
->components
;
2445 if (dt
->backend_decl
== NULL
)
2446 gfc_get_derived_type (dt
);
2448 /* Build the reference and call self. */
2449 gfc_conv_component_ref (se
, &parent
);
2450 parent
.u
.c
.sym
= dt
->components
->ts
.u
.derived
;
2451 parent
.u
.c
.component
= c
;
2452 conv_parent_component_references (se
, &parent
);
2455 /* Return the contents of a variable. Also handles reference/pointer
2456 variables (all Fortran pointer references are implicit). */
2459 gfc_conv_variable (gfc_se
* se
, gfc_expr
* expr
)
2464 tree parent_decl
= NULL_TREE
;
2467 bool alternate_entry
;
2470 bool first_time
= true;
2472 sym
= expr
->symtree
->n
.sym
;
2473 is_classarray
= IS_CLASS_ARRAY (sym
);
2477 gfc_ss_info
*ss_info
= ss
->info
;
2479 /* Check that something hasn't gone horribly wrong. */
2480 gcc_assert (ss
!= gfc_ss_terminator
);
2481 gcc_assert (ss_info
->expr
== expr
);
2483 /* A scalarized term. We already know the descriptor. */
2484 se
->expr
= ss_info
->data
.array
.descriptor
;
2485 se
->string_length
= ss_info
->string_length
;
2486 ref
= ss_info
->data
.array
.ref
;
2488 gcc_assert (ref
->type
== REF_ARRAY
2489 && ref
->u
.ar
.type
!= AR_ELEMENT
);
2491 gfc_conv_tmp_array_ref (se
);
2495 tree se_expr
= NULL_TREE
;
2497 se
->expr
= gfc_get_symbol_decl (sym
);
2499 /* Deal with references to a parent results or entries by storing
2500 the current_function_decl and moving to the parent_decl. */
2501 return_value
= sym
->attr
.function
&& sym
->result
== sym
;
2502 alternate_entry
= sym
->attr
.function
&& sym
->attr
.entry
2503 && sym
->result
== sym
;
2504 entry_master
= sym
->attr
.result
2505 && sym
->ns
->proc_name
->attr
.entry_master
2506 && !gfc_return_by_reference (sym
->ns
->proc_name
);
2507 if (current_function_decl
)
2508 parent_decl
= DECL_CONTEXT (current_function_decl
);
2510 if ((se
->expr
== parent_decl
&& return_value
)
2511 || (sym
->ns
&& sym
->ns
->proc_name
2513 && sym
->ns
->proc_name
->backend_decl
== parent_decl
2514 && (alternate_entry
|| entry_master
)))
2519 /* Special case for assigning the return value of a function.
2520 Self recursive functions must have an explicit return value. */
2521 if (return_value
&& (se
->expr
== current_function_decl
|| parent_flag
))
2522 se_expr
= gfc_get_fake_result_decl (sym
, parent_flag
);
2524 /* Similarly for alternate entry points. */
2525 else if (alternate_entry
2526 && (sym
->ns
->proc_name
->backend_decl
== current_function_decl
2529 gfc_entry_list
*el
= NULL
;
2531 for (el
= sym
->ns
->entries
; el
; el
= el
->next
)
2534 se_expr
= gfc_get_fake_result_decl (sym
, parent_flag
);
2539 else if (entry_master
2540 && (sym
->ns
->proc_name
->backend_decl
== current_function_decl
2542 se_expr
= gfc_get_fake_result_decl (sym
, parent_flag
);
2547 /* Procedure actual arguments. Look out for temporary variables
2548 with the same attributes as function values. */
2549 else if (!sym
->attr
.temporary
2550 && sym
->attr
.flavor
== FL_PROCEDURE
2551 && se
->expr
!= current_function_decl
)
2553 if (!sym
->attr
.dummy
&& !sym
->attr
.proc_pointer
)
2555 gcc_assert (TREE_CODE (se
->expr
) == FUNCTION_DECL
);
2556 se
->expr
= gfc_build_addr_expr (NULL_TREE
, se
->expr
);
2562 /* Dereference the expression, where needed. Since characters
2563 are entirely different from other types, they are treated
2565 if (sym
->ts
.type
== BT_CHARACTER
)
2567 /* Dereference character pointer dummy arguments
2569 if ((sym
->attr
.pointer
|| sym
->attr
.allocatable
)
2571 || sym
->attr
.function
2572 || sym
->attr
.result
))
2573 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2577 else if (!sym
->attr
.value
)
2579 /* Dereference temporaries for class array dummy arguments. */
2580 if (sym
->attr
.dummy
&& is_classarray
2581 && GFC_ARRAY_TYPE_P (TREE_TYPE (se
->expr
)))
2583 if (!se
->descriptor_only
)
2584 se
->expr
= GFC_DECL_SAVED_DESCRIPTOR (se
->expr
);
2586 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2590 /* Dereference non-character scalar dummy arguments. */
2591 if (sym
->attr
.dummy
&& !sym
->attr
.dimension
2592 && !(sym
->attr
.codimension
&& sym
->attr
.allocatable
)
2593 && (sym
->ts
.type
!= BT_CLASS
2594 || (!CLASS_DATA (sym
)->attr
.dimension
2595 && !(CLASS_DATA (sym
)->attr
.codimension
2596 && CLASS_DATA (sym
)->attr
.allocatable
))))
2597 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2600 /* Dereference scalar hidden result. */
2601 if (flag_f2c
&& sym
->ts
.type
== BT_COMPLEX
2602 && (sym
->attr
.function
|| sym
->attr
.result
)
2603 && !sym
->attr
.dimension
&& !sym
->attr
.pointer
2604 && !sym
->attr
.always_explicit
)
2605 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2608 /* Dereference non-character, non-class pointer variables.
2609 These must be dummies, results, or scalars. */
2611 && (sym
->attr
.pointer
|| sym
->attr
.allocatable
2612 || gfc_is_associate_pointer (sym
)
2613 || (sym
->as
&& sym
->as
->type
== AS_ASSUMED_RANK
))
2615 || sym
->attr
.function
2617 || (!sym
->attr
.dimension
2618 && (!sym
->attr
.codimension
|| !sym
->attr
.allocatable
))))
2619 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2621 /* Now treat the class array pointer variables accordingly. */
2622 else if (sym
->ts
.type
== BT_CLASS
2624 && (CLASS_DATA (sym
)->attr
.dimension
2625 || CLASS_DATA (sym
)->attr
.codimension
)
2626 && ((CLASS_DATA (sym
)->as
2627 && CLASS_DATA (sym
)->as
->type
== AS_ASSUMED_RANK
)
2628 || CLASS_DATA (sym
)->attr
.allocatable
2629 || CLASS_DATA (sym
)->attr
.class_pointer
))
2630 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2632 /* And the case where a non-dummy, non-result, non-function,
2633 non-allotable and non-pointer classarray is present. This case was
2634 previously covered by the first if, but with introducing the
2635 condition !is_classarray there, that case has to be covered
2637 else if (sym
->ts
.type
== BT_CLASS
2639 && !sym
->attr
.function
2640 && !sym
->attr
.result
2641 && (CLASS_DATA (sym
)->attr
.dimension
2642 || CLASS_DATA (sym
)->attr
.codimension
)
2644 || !CLASS_DATA (sym
)->attr
.allocatable
)
2645 && !CLASS_DATA (sym
)->attr
.class_pointer
)
2646 se
->expr
= build_fold_indirect_ref_loc (input_location
,
2653 /* For character variables, also get the length. */
2654 if (sym
->ts
.type
== BT_CHARACTER
)
2656 /* If the character length of an entry isn't set, get the length from
2657 the master function instead. */
2658 if (sym
->attr
.entry
&& !sym
->ts
.u
.cl
->backend_decl
)
2659 se
->string_length
= sym
->ns
->proc_name
->ts
.u
.cl
->backend_decl
;
2661 se
->string_length
= sym
->ts
.u
.cl
->backend_decl
;
2662 gcc_assert (se
->string_length
);
2670 /* Return the descriptor if that's what we want and this is an array
2671 section reference. */
2672 if (se
->descriptor_only
&& ref
->u
.ar
.type
!= AR_ELEMENT
)
2674 /* TODO: Pointers to single elements of array sections, eg elemental subs. */
2675 /* Return the descriptor for array pointers and allocations. */
2676 if (se
->want_pointer
2677 && ref
->next
== NULL
&& (se
->descriptor_only
))
2680 gfc_conv_array_ref (se
, &ref
->u
.ar
, expr
, &expr
->where
);
2681 /* Return a pointer to an element. */
2685 if (first_time
&& is_classarray
&& sym
->attr
.dummy
2686 && se
->descriptor_only
2687 && !CLASS_DATA (sym
)->attr
.allocatable
2688 && !CLASS_DATA (sym
)->attr
.class_pointer
2689 && CLASS_DATA (sym
)->as
2690 && CLASS_DATA (sym
)->as
->type
!= AS_ASSUMED_RANK
2691 && strcmp ("_data", ref
->u
.c
.component
->name
) == 0)
2692 /* Skip the first ref of a _data component, because for class
2693 arrays that one is already done by introducing a temporary
2694 array descriptor. */
2697 if (ref
->u
.c
.sym
->attr
.extension
)
2698 conv_parent_component_references (se
, ref
);
2700 gfc_conv_component_ref (se
, ref
);
2701 if (!ref
->next
&& ref
->u
.c
.sym
->attr
.codimension
2702 && se
->want_pointer
&& se
->descriptor_only
)
2708 gfc_conv_substring (se
, ref
, expr
->ts
.kind
,
2709 expr
->symtree
->name
, &expr
->where
);
2719 /* Pointer assignment, allocation or pass by reference. Arrays are handled
2721 if (se
->want_pointer
)
2723 if (expr
->ts
.type
== BT_CHARACTER
&& !gfc_is_proc_ptr_comp (expr
))
2724 gfc_conv_string_parameter (se
);
2726 se
->expr
= gfc_build_addr_expr (NULL_TREE
, se
->expr
);
2731 /* Unary ops are easy... Or they would be if ! was a valid op. */
2734 gfc_conv_unary_op (enum tree_code code
, gfc_se
* se
, gfc_expr
* expr
)
2739 gcc_assert (expr
->ts
.type
!= BT_CHARACTER
);
2740 /* Initialize the operand. */
2741 gfc_init_se (&operand
, se
);
2742 gfc_conv_expr_val (&operand
, expr
->value
.op
.op1
);
2743 gfc_add_block_to_block (&se
->pre
, &operand
.pre
);
2745 type
= gfc_typenode_for_spec (&expr
->ts
);
2747 /* TRUTH_NOT_EXPR is not a "true" unary operator in GCC.
2748 We must convert it to a compare to 0 (e.g. EQ_EXPR (op1, 0)).
2749 All other unary operators have an equivalent GIMPLE unary operator. */
2750 if (code
== TRUTH_NOT_EXPR
)
2751 se
->expr
= fold_build2_loc (input_location
, EQ_EXPR
, type
, operand
.expr
,
2752 build_int_cst (type
, 0));
2754 se
->expr
= fold_build1_loc (input_location
, code
, type
, operand
.expr
);
2758 /* Expand power operator to optimal multiplications when a value is raised
2759 to a constant integer n. See section 4.6.3, "Evaluation of Powers" of
2760 Donald E. Knuth, "Seminumerical Algorithms", Vol. 2, "The Art of Computer
2761 Programming", 3rd Edition, 1998. */
2763 /* This code is mostly duplicated from expand_powi in the backend.
2764 We establish the "optimal power tree" lookup table with the defined size.
2765 The items in the table are the exponents used to calculate the index
2766 exponents. Any integer n less than the value can get an "addition chain",
2767 with the first node being one. */
2768 #define POWI_TABLE_SIZE 256
2770 /* The table is from builtins.c. */
2771 static const unsigned char powi_table
[POWI_TABLE_SIZE
] =
2773 0, 1, 1, 2, 2, 3, 3, 4, /* 0 - 7 */
2774 4, 6, 5, 6, 6, 10, 7, 9, /* 8 - 15 */
2775 8, 16, 9, 16, 10, 12, 11, 13, /* 16 - 23 */
2776 12, 17, 13, 18, 14, 24, 15, 26, /* 24 - 31 */
2777 16, 17, 17, 19, 18, 33, 19, 26, /* 32 - 39 */
2778 20, 25, 21, 40, 22, 27, 23, 44, /* 40 - 47 */
2779 24, 32, 25, 34, 26, 29, 27, 44, /* 48 - 55 */
2780 28, 31, 29, 34, 30, 60, 31, 36, /* 56 - 63 */
2781 32, 64, 33, 34, 34, 46, 35, 37, /* 64 - 71 */
2782 36, 65, 37, 50, 38, 48, 39, 69, /* 72 - 79 */
2783 40, 49, 41, 43, 42, 51, 43, 58, /* 80 - 87 */
2784 44, 64, 45, 47, 46, 59, 47, 76, /* 88 - 95 */
2785 48, 65, 49, 66, 50, 67, 51, 66, /* 96 - 103 */
2786 52, 70, 53, 74, 54, 104, 55, 74, /* 104 - 111 */
2787 56, 64, 57, 69, 58, 78, 59, 68, /* 112 - 119 */
2788 60, 61, 61, 80, 62, 75, 63, 68, /* 120 - 127 */
2789 64, 65, 65, 128, 66, 129, 67, 90, /* 128 - 135 */
2790 68, 73, 69, 131, 70, 94, 71, 88, /* 136 - 143 */
2791 72, 128, 73, 98, 74, 132, 75, 121, /* 144 - 151 */
2792 76, 102, 77, 124, 78, 132, 79, 106, /* 152 - 159 */
2793 80, 97, 81, 160, 82, 99, 83, 134, /* 160 - 167 */
2794 84, 86, 85, 95, 86, 160, 87, 100, /* 168 - 175 */
2795 88, 113, 89, 98, 90, 107, 91, 122, /* 176 - 183 */
2796 92, 111, 93, 102, 94, 126, 95, 150, /* 184 - 191 */
2797 96, 128, 97, 130, 98, 133, 99, 195, /* 192 - 199 */
2798 100, 128, 101, 123, 102, 164, 103, 138, /* 200 - 207 */
2799 104, 145, 105, 146, 106, 109, 107, 149, /* 208 - 215 */
2800 108, 200, 109, 146, 110, 170, 111, 157, /* 216 - 223 */
2801 112, 128, 113, 130, 114, 182, 115, 132, /* 224 - 231 */
2802 116, 200, 117, 132, 118, 158, 119, 206, /* 232 - 239 */
2803 120, 240, 121, 162, 122, 147, 123, 152, /* 240 - 247 */
2804 124, 166, 125, 214, 126, 138, 127, 153, /* 248 - 255 */
2807 /* If n is larger than lookup table's max index, we use the "window
2809 #define POWI_WINDOW_SIZE 3
2811 /* Recursive function to expand the power operator. The temporary
2812 values are put in tmpvar. The function returns tmpvar[1] ** n. */
2814 gfc_conv_powi (gfc_se
* se
, unsigned HOST_WIDE_INT n
, tree
* tmpvar
)
2821 if (n
< POWI_TABLE_SIZE
)
2826 op0
= gfc_conv_powi (se
, n
- powi_table
[n
], tmpvar
);
2827 op1
= gfc_conv_powi (se
, powi_table
[n
], tmpvar
);
2831 digit
= n
& ((1 << POWI_WINDOW_SIZE
) - 1);
2832 op0
= gfc_conv_powi (se
, n
- digit
, tmpvar
);
2833 op1
= gfc_conv_powi (se
, digit
, tmpvar
);
2837 op0
= gfc_conv_powi (se
, n
>> 1, tmpvar
);
2841 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, TREE_TYPE (op0
), op0
, op1
);
2842 tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
2844 if (n
< POWI_TABLE_SIZE
)
2851 /* Expand lhs ** rhs. rhs is a constant integer. If it expands successfully,
2852 return 1. Else return 0 and a call to runtime library functions
2853 will have to be built. */
2855 gfc_conv_cst_int_power (gfc_se
* se
, tree lhs
, tree rhs
)
2860 tree vartmp
[POWI_TABLE_SIZE
];
2862 unsigned HOST_WIDE_INT n
;
2864 wide_int wrhs
= rhs
;
2866 /* If exponent is too large, we won't expand it anyway, so don't bother
2867 with large integer values. */
2868 if (!wi::fits_shwi_p (wrhs
))
2871 m
= wrhs
.to_shwi ();
2872 /* Use the wide_int's routine to reliably get the absolute value on all
2873 platforms. Then convert it to a HOST_WIDE_INT like above. */
2874 n
= wi::abs (wrhs
).to_shwi ();
2876 type
= TREE_TYPE (lhs
);
2877 sgn
= tree_int_cst_sgn (rhs
);
2879 if (((FLOAT_TYPE_P (type
) && !flag_unsafe_math_optimizations
)
2880 || optimize_size
) && (m
> 2 || m
< -1))
2886 se
->expr
= gfc_build_const (type
, integer_one_node
);
2890 /* If rhs < 0 and lhs is an integer, the result is -1, 0 or 1. */
2891 if ((sgn
== -1) && (TREE_CODE (type
) == INTEGER_TYPE
))
2893 tmp
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
2894 lhs
, build_int_cst (TREE_TYPE (lhs
), -1));
2895 cond
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
2896 lhs
, build_int_cst (TREE_TYPE (lhs
), 1));
2899 result = (lhs == 1 || lhs == -1) ? 1 : 0. */
2902 tmp
= fold_build2_loc (input_location
, TRUTH_OR_EXPR
,
2903 boolean_type_node
, tmp
, cond
);
2904 se
->expr
= fold_build3_loc (input_location
, COND_EXPR
, type
,
2905 tmp
, build_int_cst (type
, 1),
2906 build_int_cst (type
, 0));
2910 result = (lhs == 1) ? 1 : (lhs == -1) ? -1 : 0. */
2911 tmp
= fold_build3_loc (input_location
, COND_EXPR
, type
, tmp
,
2912 build_int_cst (type
, -1),
2913 build_int_cst (type
, 0));
2914 se
->expr
= fold_build3_loc (input_location
, COND_EXPR
, type
,
2915 cond
, build_int_cst (type
, 1), tmp
);
2919 memset (vartmp
, 0, sizeof (vartmp
));
2923 tmp
= gfc_build_const (type
, integer_one_node
);
2924 vartmp
[1] = fold_build2_loc (input_location
, RDIV_EXPR
, type
, tmp
,
2928 se
->expr
= gfc_conv_powi (se
, n
, vartmp
);
2934 /* Power op (**). Constant integer exponent has special handling. */
2937 gfc_conv_power_op (gfc_se
* se
, gfc_expr
* expr
)
2939 tree gfc_int4_type_node
;
2942 int res_ikind_1
, res_ikind_2
;
2947 gfc_init_se (&lse
, se
);
2948 gfc_conv_expr_val (&lse
, expr
->value
.op
.op1
);
2949 lse
.expr
= gfc_evaluate_now (lse
.expr
, &lse
.pre
);
2950 gfc_add_block_to_block (&se
->pre
, &lse
.pre
);
2952 gfc_init_se (&rse
, se
);
2953 gfc_conv_expr_val (&rse
, expr
->value
.op
.op2
);
2954 gfc_add_block_to_block (&se
->pre
, &rse
.pre
);
2956 if (expr
->value
.op
.op2
->ts
.type
== BT_INTEGER
2957 && expr
->value
.op
.op2
->expr_type
== EXPR_CONSTANT
)
2958 if (gfc_conv_cst_int_power (se
, lse
.expr
, rse
.expr
))
2961 gfc_int4_type_node
= gfc_get_int_type (4);
2963 /* In case of integer operands with kinds 1 or 2, we call the integer kind 4
2964 library routine. But in the end, we have to convert the result back
2965 if this case applies -- with res_ikind_K, we keep track whether operand K
2966 falls into this case. */
2970 kind
= expr
->value
.op
.op1
->ts
.kind
;
2971 switch (expr
->value
.op
.op2
->ts
.type
)
2974 ikind
= expr
->value
.op
.op2
->ts
.kind
;
2979 rse
.expr
= convert (gfc_int4_type_node
, rse
.expr
);
2980 res_ikind_2
= ikind
;
3002 if (expr
->value
.op
.op1
->ts
.type
== BT_INTEGER
)
3004 lse
.expr
= convert (gfc_int4_type_node
, lse
.expr
);
3031 switch (expr
->value
.op
.op1
->ts
.type
)
3034 if (kind
== 3) /* Case 16 was not handled properly above. */
3036 fndecl
= gfor_fndecl_math_powi
[kind
][ikind
].integer
;
3040 /* Use builtins for real ** int4. */
3046 fndecl
= builtin_decl_explicit (BUILT_IN_POWIF
);
3050 fndecl
= builtin_decl_explicit (BUILT_IN_POWI
);
3054 fndecl
= builtin_decl_explicit (BUILT_IN_POWIL
);
3058 /* Use the __builtin_powil() only if real(kind=16) is
3059 actually the C long double type. */
3060 if (!gfc_real16_is_float128
)
3061 fndecl
= builtin_decl_explicit (BUILT_IN_POWIL
);
3069 /* If we don't have a good builtin for this, go for the
3070 library function. */
3072 fndecl
= gfor_fndecl_math_powi
[kind
][ikind
].real
;
3076 fndecl
= gfor_fndecl_math_powi
[kind
][ikind
].cmplx
;
3085 fndecl
= gfc_builtin_decl_for_float_kind (BUILT_IN_POW
, kind
);
3089 fndecl
= gfc_builtin_decl_for_float_kind (BUILT_IN_CPOW
, kind
);
3097 se
->expr
= build_call_expr_loc (input_location
,
3098 fndecl
, 2, lse
.expr
, rse
.expr
);
3100 /* Convert the result back if it is of wrong integer kind. */
3101 if (res_ikind_1
!= -1 && res_ikind_2
!= -1)
3103 /* We want the maximum of both operand kinds as result. */
3104 if (res_ikind_1
< res_ikind_2
)
3105 res_ikind_1
= res_ikind_2
;
3106 se
->expr
= convert (gfc_get_int_type (res_ikind_1
), se
->expr
);
3111 /* Generate code to allocate a string temporary. */
3114 gfc_conv_string_tmp (gfc_se
* se
, tree type
, tree len
)
3119 if (gfc_can_put_var_on_stack (len
))
3121 /* Create a temporary variable to hold the result. */
3122 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
3123 gfc_charlen_type_node
, len
,
3124 build_int_cst (gfc_charlen_type_node
, 1));
3125 tmp
= build_range_type (gfc_array_index_type
, gfc_index_zero_node
, tmp
);
3127 if (TREE_CODE (TREE_TYPE (type
)) == ARRAY_TYPE
)
3128 tmp
= build_array_type (TREE_TYPE (TREE_TYPE (type
)), tmp
);
3130 tmp
= build_array_type (TREE_TYPE (type
), tmp
);
3132 var
= gfc_create_var (tmp
, "str");
3133 var
= gfc_build_addr_expr (type
, var
);
3137 /* Allocate a temporary to hold the result. */
3138 var
= gfc_create_var (type
, "pstr");
3139 gcc_assert (POINTER_TYPE_P (type
));
3140 tmp
= TREE_TYPE (type
);
3141 if (TREE_CODE (tmp
) == ARRAY_TYPE
)
3142 tmp
= TREE_TYPE (tmp
);
3143 tmp
= TYPE_SIZE_UNIT (tmp
);
3144 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, size_type_node
,
3145 fold_convert (size_type_node
, len
),
3146 fold_convert (size_type_node
, tmp
));
3147 tmp
= gfc_call_malloc (&se
->pre
, type
, tmp
);
3148 gfc_add_modify (&se
->pre
, var
, tmp
);
3150 /* Free the temporary afterwards. */
3151 tmp
= gfc_call_free (var
);
3152 gfc_add_expr_to_block (&se
->post
, tmp
);
3159 /* Handle a string concatenation operation. A temporary will be allocated to
3163 gfc_conv_concat_op (gfc_se
* se
, gfc_expr
* expr
)
3166 tree len
, type
, var
, tmp
, fndecl
;
3168 gcc_assert (expr
->value
.op
.op1
->ts
.type
== BT_CHARACTER
3169 && expr
->value
.op
.op2
->ts
.type
== BT_CHARACTER
);
3170 gcc_assert (expr
->value
.op
.op1
->ts
.kind
== expr
->value
.op
.op2
->ts
.kind
);
3172 gfc_init_se (&lse
, se
);
3173 gfc_conv_expr (&lse
, expr
->value
.op
.op1
);
3174 gfc_conv_string_parameter (&lse
);
3175 gfc_init_se (&rse
, se
);
3176 gfc_conv_expr (&rse
, expr
->value
.op
.op2
);
3177 gfc_conv_string_parameter (&rse
);
3179 gfc_add_block_to_block (&se
->pre
, &lse
.pre
);
3180 gfc_add_block_to_block (&se
->pre
, &rse
.pre
);
3182 type
= gfc_get_character_type (expr
->ts
.kind
, expr
->ts
.u
.cl
);
3183 len
= TYPE_MAX_VALUE (TYPE_DOMAIN (type
));
3184 if (len
== NULL_TREE
)
3186 len
= fold_build2_loc (input_location
, PLUS_EXPR
,
3187 TREE_TYPE (lse
.string_length
),
3188 lse
.string_length
, rse
.string_length
);
3191 type
= build_pointer_type (type
);
3193 var
= gfc_conv_string_tmp (se
, type
, len
);
3195 /* Do the actual concatenation. */
3196 if (expr
->ts
.kind
== 1)
3197 fndecl
= gfor_fndecl_concat_string
;
3198 else if (expr
->ts
.kind
== 4)
3199 fndecl
= gfor_fndecl_concat_string_char4
;
3203 tmp
= build_call_expr_loc (input_location
,
3204 fndecl
, 6, len
, var
, lse
.string_length
, lse
.expr
,
3205 rse
.string_length
, rse
.expr
);
3206 gfc_add_expr_to_block (&se
->pre
, tmp
);
3208 /* Add the cleanup for the operands. */
3209 gfc_add_block_to_block (&se
->pre
, &rse
.post
);
3210 gfc_add_block_to_block (&se
->pre
, &lse
.post
);
3213 se
->string_length
= len
;
3216 /* Translates an op expression. Common (binary) cases are handled by this
3217 function, others are passed on. Recursion is used in either case.
3218 We use the fact that (op1.ts == op2.ts) (except for the power
3220 Operators need no special handling for scalarized expressions as long as
3221 they call gfc_conv_simple_val to get their operands.
3222 Character strings get special handling. */
3225 gfc_conv_expr_op (gfc_se
* se
, gfc_expr
* expr
)
3227 enum tree_code code
;
3236 switch (expr
->value
.op
.op
)
3238 case INTRINSIC_PARENTHESES
:
3239 if ((expr
->ts
.type
== BT_REAL
|| expr
->ts
.type
== BT_COMPLEX
)
3240 && flag_protect_parens
)
3242 gfc_conv_unary_op (PAREN_EXPR
, se
, expr
);
3243 gcc_assert (FLOAT_TYPE_P (TREE_TYPE (se
->expr
)));
3248 case INTRINSIC_UPLUS
:
3249 gfc_conv_expr (se
, expr
->value
.op
.op1
);
3252 case INTRINSIC_UMINUS
:
3253 gfc_conv_unary_op (NEGATE_EXPR
, se
, expr
);
3257 gfc_conv_unary_op (TRUTH_NOT_EXPR
, se
, expr
);
3260 case INTRINSIC_PLUS
:
3264 case INTRINSIC_MINUS
:
3268 case INTRINSIC_TIMES
:
3272 case INTRINSIC_DIVIDE
:
3273 /* If expr is a real or complex expr, use an RDIV_EXPR. If op1 is
3274 an integer, we must round towards zero, so we use a
3276 if (expr
->ts
.type
== BT_INTEGER
)
3277 code
= TRUNC_DIV_EXPR
;
3282 case INTRINSIC_POWER
:
3283 gfc_conv_power_op (se
, expr
);
3286 case INTRINSIC_CONCAT
:
3287 gfc_conv_concat_op (se
, expr
);
3291 code
= TRUTH_ANDIF_EXPR
;
3296 code
= TRUTH_ORIF_EXPR
;
3300 /* EQV and NEQV only work on logicals, but since we represent them
3301 as integers, we can use EQ_EXPR and NE_EXPR for them in GIMPLE. */
3303 case INTRINSIC_EQ_OS
:
3311 case INTRINSIC_NE_OS
:
3312 case INTRINSIC_NEQV
:
3319 case INTRINSIC_GT_OS
:
3326 case INTRINSIC_GE_OS
:
3333 case INTRINSIC_LT_OS
:
3340 case INTRINSIC_LE_OS
:
3346 case INTRINSIC_USER
:
3347 case INTRINSIC_ASSIGN
:
3348 /* These should be converted into function calls by the frontend. */
3352 fatal_error (input_location
, "Unknown intrinsic op");
3356 /* The only exception to this is **, which is handled separately anyway. */
3357 gcc_assert (expr
->value
.op
.op1
->ts
.type
== expr
->value
.op
.op2
->ts
.type
);
3359 if (checkstring
&& expr
->value
.op
.op1
->ts
.type
!= BT_CHARACTER
)
3363 gfc_init_se (&lse
, se
);
3364 gfc_conv_expr (&lse
, expr
->value
.op
.op1
);
3365 gfc_add_block_to_block (&se
->pre
, &lse
.pre
);
3368 gfc_init_se (&rse
, se
);
3369 gfc_conv_expr (&rse
, expr
->value
.op
.op2
);
3370 gfc_add_block_to_block (&se
->pre
, &rse
.pre
);
3374 gfc_conv_string_parameter (&lse
);
3375 gfc_conv_string_parameter (&rse
);
3377 lse
.expr
= gfc_build_compare_string (lse
.string_length
, lse
.expr
,
3378 rse
.string_length
, rse
.expr
,
3379 expr
->value
.op
.op1
->ts
.kind
,
3381 rse
.expr
= build_int_cst (TREE_TYPE (lse
.expr
), 0);
3382 gfc_add_block_to_block (&lse
.post
, &rse
.post
);
3385 type
= gfc_typenode_for_spec (&expr
->ts
);
3389 /* The result of logical ops is always boolean_type_node. */
3390 tmp
= fold_build2_loc (input_location
, code
, boolean_type_node
,
3391 lse
.expr
, rse
.expr
);
3392 se
->expr
= convert (type
, tmp
);
3395 se
->expr
= fold_build2_loc (input_location
, code
, type
, lse
.expr
, rse
.expr
);
3397 /* Add the post blocks. */
3398 gfc_add_block_to_block (&se
->post
, &rse
.post
);
3399 gfc_add_block_to_block (&se
->post
, &lse
.post
);
3402 /* If a string's length is one, we convert it to a single character. */
3405 gfc_string_to_single_character (tree len
, tree str
, int kind
)
3409 || !tree_fits_uhwi_p (len
)
3410 || !POINTER_TYPE_P (TREE_TYPE (str
)))
3413 if (TREE_INT_CST_LOW (len
) == 1)
3415 str
= fold_convert (gfc_get_pchar_type (kind
), str
);
3416 return build_fold_indirect_ref_loc (input_location
, str
);
3420 && TREE_CODE (str
) == ADDR_EXPR
3421 && TREE_CODE (TREE_OPERAND (str
, 0)) == ARRAY_REF
3422 && TREE_CODE (TREE_OPERAND (TREE_OPERAND (str
, 0), 0)) == STRING_CST
3423 && array_ref_low_bound (TREE_OPERAND (str
, 0))
3424 == TREE_OPERAND (TREE_OPERAND (str
, 0), 1)
3425 && TREE_INT_CST_LOW (len
) > 1
3426 && TREE_INT_CST_LOW (len
)
3427 == (unsigned HOST_WIDE_INT
)
3428 TREE_STRING_LENGTH (TREE_OPERAND (TREE_OPERAND (str
, 0), 0)))
3430 tree ret
= fold_convert (gfc_get_pchar_type (kind
), str
);
3431 ret
= build_fold_indirect_ref_loc (input_location
, ret
);
3432 if (TREE_CODE (ret
) == INTEGER_CST
)
3434 tree string_cst
= TREE_OPERAND (TREE_OPERAND (str
, 0), 0);
3435 int i
, length
= TREE_STRING_LENGTH (string_cst
);
3436 const char *ptr
= TREE_STRING_POINTER (string_cst
);
3438 for (i
= 1; i
< length
; i
++)
3451 gfc_conv_scalar_char_value (gfc_symbol
*sym
, gfc_se
*se
, gfc_expr
**expr
)
3454 if (sym
->backend_decl
)
3456 /* This becomes the nominal_type in
3457 function.c:assign_parm_find_data_types. */
3458 TREE_TYPE (sym
->backend_decl
) = unsigned_char_type_node
;
3459 /* This becomes the passed_type in
3460 function.c:assign_parm_find_data_types. C promotes char to
3461 integer for argument passing. */
3462 DECL_ARG_TYPE (sym
->backend_decl
) = unsigned_type_node
;
3464 DECL_BY_REFERENCE (sym
->backend_decl
) = 0;
3469 /* If we have a constant character expression, make it into an
3471 if ((*expr
)->expr_type
== EXPR_CONSTANT
)
3476 *expr
= gfc_get_int_expr (gfc_default_integer_kind
, NULL
,
3477 (int)(*expr
)->value
.character
.string
[0]);
3478 if ((*expr
)->ts
.kind
!= gfc_c_int_kind
)
3480 /* The expr needs to be compatible with a C int. If the
3481 conversion fails, then the 2 causes an ICE. */
3482 ts
.type
= BT_INTEGER
;
3483 ts
.kind
= gfc_c_int_kind
;
3484 gfc_convert_type (*expr
, &ts
, 2);
3487 else if (se
!= NULL
&& (*expr
)->expr_type
== EXPR_VARIABLE
)
3489 if ((*expr
)->ref
== NULL
)
3491 se
->expr
= gfc_string_to_single_character
3492 (build_int_cst (integer_type_node
, 1),
3493 gfc_build_addr_expr (gfc_get_pchar_type ((*expr
)->ts
.kind
),
3495 ((*expr
)->symtree
->n
.sym
)),
3500 gfc_conv_variable (se
, *expr
);
3501 se
->expr
= gfc_string_to_single_character
3502 (build_int_cst (integer_type_node
, 1),
3503 gfc_build_addr_expr (gfc_get_pchar_type ((*expr
)->ts
.kind
),
3511 /* Helper function for gfc_build_compare_string. Return LEN_TRIM value
3512 if STR is a string literal, otherwise return -1. */
3515 gfc_optimize_len_trim (tree len
, tree str
, int kind
)
3518 && TREE_CODE (str
) == ADDR_EXPR
3519 && TREE_CODE (TREE_OPERAND (str
, 0)) == ARRAY_REF
3520 && TREE_CODE (TREE_OPERAND (TREE_OPERAND (str
, 0), 0)) == STRING_CST
3521 && array_ref_low_bound (TREE_OPERAND (str
, 0))
3522 == TREE_OPERAND (TREE_OPERAND (str
, 0), 1)
3523 && tree_fits_uhwi_p (len
)
3524 && tree_to_uhwi (len
) >= 1
3525 && tree_to_uhwi (len
)
3526 == (unsigned HOST_WIDE_INT
)
3527 TREE_STRING_LENGTH (TREE_OPERAND (TREE_OPERAND (str
, 0), 0)))
3529 tree folded
= fold_convert (gfc_get_pchar_type (kind
), str
);
3530 folded
= build_fold_indirect_ref_loc (input_location
, folded
);
3531 if (TREE_CODE (folded
) == INTEGER_CST
)
3533 tree string_cst
= TREE_OPERAND (TREE_OPERAND (str
, 0), 0);
3534 int length
= TREE_STRING_LENGTH (string_cst
);
3535 const char *ptr
= TREE_STRING_POINTER (string_cst
);
3537 for (; length
> 0; length
--)
3538 if (ptr
[length
- 1] != ' ')
3547 /* Helper to build a call to memcmp. */
3550 build_memcmp_call (tree s1
, tree s2
, tree n
)
3554 if (!POINTER_TYPE_P (TREE_TYPE (s1
)))
3555 s1
= gfc_build_addr_expr (pvoid_type_node
, s1
);
3557 s1
= fold_convert (pvoid_type_node
, s1
);
3559 if (!POINTER_TYPE_P (TREE_TYPE (s2
)))
3560 s2
= gfc_build_addr_expr (pvoid_type_node
, s2
);
3562 s2
= fold_convert (pvoid_type_node
, s2
);
3564 n
= fold_convert (size_type_node
, n
);
3566 tmp
= build_call_expr_loc (input_location
,
3567 builtin_decl_explicit (BUILT_IN_MEMCMP
),
3570 return fold_convert (integer_type_node
, tmp
);
3573 /* Compare two strings. If they are all single characters, the result is the
3574 subtraction of them. Otherwise, we build a library call. */
3577 gfc_build_compare_string (tree len1
, tree str1
, tree len2
, tree str2
, int kind
,
3578 enum tree_code code
)
3584 gcc_assert (POINTER_TYPE_P (TREE_TYPE (str1
)));
3585 gcc_assert (POINTER_TYPE_P (TREE_TYPE (str2
)));
3587 sc1
= gfc_string_to_single_character (len1
, str1
, kind
);
3588 sc2
= gfc_string_to_single_character (len2
, str2
, kind
);
3590 if (sc1
!= NULL_TREE
&& sc2
!= NULL_TREE
)
3592 /* Deal with single character specially. */
3593 sc1
= fold_convert (integer_type_node
, sc1
);
3594 sc2
= fold_convert (integer_type_node
, sc2
);
3595 return fold_build2_loc (input_location
, MINUS_EXPR
, integer_type_node
,
3599 if ((code
== EQ_EXPR
|| code
== NE_EXPR
)
3601 && INTEGER_CST_P (len1
) && INTEGER_CST_P (len2
))
3603 /* If one string is a string literal with LEN_TRIM longer
3604 than the length of the second string, the strings
3606 int len
= gfc_optimize_len_trim (len1
, str1
, kind
);
3607 if (len
> 0 && compare_tree_int (len2
, len
) < 0)
3608 return integer_one_node
;
3609 len
= gfc_optimize_len_trim (len2
, str2
, kind
);
3610 if (len
> 0 && compare_tree_int (len1
, len
) < 0)
3611 return integer_one_node
;
3614 /* We can compare via memcpy if the strings are known to be equal
3615 in length and they are
3617 - kind=4 and the comparison is for (in)equality. */
3619 if (INTEGER_CST_P (len1
) && INTEGER_CST_P (len2
)
3620 && tree_int_cst_equal (len1
, len2
)
3621 && (kind
== 1 || code
== EQ_EXPR
|| code
== NE_EXPR
))
3626 chartype
= gfc_get_char_type (kind
);
3627 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, TREE_TYPE(len1
),
3628 fold_convert (TREE_TYPE(len1
),
3629 TYPE_SIZE_UNIT(chartype
)),
3631 return build_memcmp_call (str1
, str2
, tmp
);
3634 /* Build a call for the comparison. */
3636 fndecl
= gfor_fndecl_compare_string
;
3638 fndecl
= gfor_fndecl_compare_string_char4
;
3642 return build_call_expr_loc (input_location
, fndecl
, 4,
3643 len1
, str1
, len2
, str2
);
3647 /* Return the backend_decl for a procedure pointer component. */
3650 get_proc_ptr_comp (gfc_expr
*e
)
3656 gfc_init_se (&comp_se
, NULL
);
3657 e2
= gfc_copy_expr (e
);
3658 /* We have to restore the expr type later so that gfc_free_expr frees
3659 the exact same thing that was allocated.
3660 TODO: This is ugly. */
3661 old_type
= e2
->expr_type
;
3662 e2
->expr_type
= EXPR_VARIABLE
;
3663 gfc_conv_expr (&comp_se
, e2
);
3664 e2
->expr_type
= old_type
;
3666 return build_fold_addr_expr_loc (input_location
, comp_se
.expr
);
3670 /* Convert a typebound function reference from a class object. */
3672 conv_base_obj_fcn_val (gfc_se
* se
, tree base_object
, gfc_expr
* expr
)
3677 if (!VAR_P (base_object
))
3679 var
= gfc_create_var (TREE_TYPE (base_object
), NULL
);
3680 gfc_add_modify (&se
->pre
, var
, base_object
);
3682 se
->expr
= gfc_class_vptr_get (base_object
);
3683 se
->expr
= build_fold_indirect_ref_loc (input_location
, se
->expr
);
3685 while (ref
&& ref
->next
)
3687 gcc_assert (ref
&& ref
->type
== REF_COMPONENT
);
3688 if (ref
->u
.c
.sym
->attr
.extension
)
3689 conv_parent_component_references (se
, ref
);
3690 gfc_conv_component_ref (se
, ref
);
3691 se
->expr
= build_fold_addr_expr_loc (input_location
, se
->expr
);
3696 conv_function_val (gfc_se
* se
, gfc_symbol
* sym
, gfc_expr
* expr
)
3700 if (gfc_is_proc_ptr_comp (expr
))
3701 tmp
= get_proc_ptr_comp (expr
);
3702 else if (sym
->attr
.dummy
)
3704 tmp
= gfc_get_symbol_decl (sym
);
3705 if (sym
->attr
.proc_pointer
)
3706 tmp
= build_fold_indirect_ref_loc (input_location
,
3708 gcc_assert (TREE_CODE (TREE_TYPE (tmp
)) == POINTER_TYPE
3709 && TREE_CODE (TREE_TYPE (TREE_TYPE (tmp
))) == FUNCTION_TYPE
);
3713 if (!sym
->backend_decl
)
3714 sym
->backend_decl
= gfc_get_extern_function_decl (sym
);
3716 TREE_USED (sym
->backend_decl
) = 1;
3718 tmp
= sym
->backend_decl
;
3720 if (sym
->attr
.cray_pointee
)
3722 /* TODO - make the cray pointee a pointer to a procedure,
3723 assign the pointer to it and use it for the call. This
3725 tmp
= convert (build_pointer_type (TREE_TYPE (tmp
)),
3726 gfc_get_symbol_decl (sym
->cp_pointer
));
3727 tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
3730 if (!POINTER_TYPE_P (TREE_TYPE (tmp
)))
3732 gcc_assert (TREE_CODE (tmp
) == FUNCTION_DECL
);
3733 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
3740 /* Initialize MAPPING. */
3743 gfc_init_interface_mapping (gfc_interface_mapping
* mapping
)
3745 mapping
->syms
= NULL
;
3746 mapping
->charlens
= NULL
;
3750 /* Free all memory held by MAPPING (but not MAPPING itself). */
3753 gfc_free_interface_mapping (gfc_interface_mapping
* mapping
)
3755 gfc_interface_sym_mapping
*sym
;
3756 gfc_interface_sym_mapping
*nextsym
;
3758 gfc_charlen
*nextcl
;
3760 for (sym
= mapping
->syms
; sym
; sym
= nextsym
)
3762 nextsym
= sym
->next
;
3763 sym
->new_sym
->n
.sym
->formal
= NULL
;
3764 gfc_free_symbol (sym
->new_sym
->n
.sym
);
3765 gfc_free_expr (sym
->expr
);
3766 free (sym
->new_sym
);
3769 for (cl
= mapping
->charlens
; cl
; cl
= nextcl
)
3772 gfc_free_expr (cl
->length
);
3778 /* Return a copy of gfc_charlen CL. Add the returned structure to
3779 MAPPING so that it will be freed by gfc_free_interface_mapping. */
3781 static gfc_charlen
*
3782 gfc_get_interface_mapping_charlen (gfc_interface_mapping
* mapping
,
3785 gfc_charlen
*new_charlen
;
3787 new_charlen
= gfc_get_charlen ();
3788 new_charlen
->next
= mapping
->charlens
;
3789 new_charlen
->length
= gfc_copy_expr (cl
->length
);
3791 mapping
->charlens
= new_charlen
;
3796 /* A subroutine of gfc_add_interface_mapping. Return a descriptorless
3797 array variable that can be used as the actual argument for dummy
3798 argument SYM. Add any initialization code to BLOCK. PACKED is as
3799 for gfc_get_nodesc_array_type and DATA points to the first element
3800 in the passed array. */
3803 gfc_get_interface_mapping_array (stmtblock_t
* block
, gfc_symbol
* sym
,
3804 gfc_packed packed
, tree data
)
3809 type
= gfc_typenode_for_spec (&sym
->ts
);
3810 type
= gfc_get_nodesc_array_type (type
, sym
->as
, packed
,
3811 !sym
->attr
.target
&& !sym
->attr
.pointer
3812 && !sym
->attr
.proc_pointer
);
3814 var
= gfc_create_var (type
, "ifm");
3815 gfc_add_modify (block
, var
, fold_convert (type
, data
));
3821 /* A subroutine of gfc_add_interface_mapping. Set the stride, upper bounds
3822 and offset of descriptorless array type TYPE given that it has the same
3823 size as DESC. Add any set-up code to BLOCK. */
3826 gfc_set_interface_mapping_bounds (stmtblock_t
* block
, tree type
, tree desc
)
3833 offset
= gfc_index_zero_node
;
3834 for (n
= 0; n
< GFC_TYPE_ARRAY_RANK (type
); n
++)
3836 dim
= gfc_rank_cst
[n
];
3837 GFC_TYPE_ARRAY_STRIDE (type
, n
) = gfc_conv_array_stride (desc
, n
);
3838 if (GFC_TYPE_ARRAY_LBOUND (type
, n
) == NULL_TREE
)
3840 GFC_TYPE_ARRAY_LBOUND (type
, n
)
3841 = gfc_conv_descriptor_lbound_get (desc
, dim
);
3842 GFC_TYPE_ARRAY_UBOUND (type
, n
)
3843 = gfc_conv_descriptor_ubound_get (desc
, dim
);
3845 else if (GFC_TYPE_ARRAY_UBOUND (type
, n
) == NULL_TREE
)
3847 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
3848 gfc_array_index_type
,
3849 gfc_conv_descriptor_ubound_get (desc
, dim
),
3850 gfc_conv_descriptor_lbound_get (desc
, dim
));
3851 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
,
3852 gfc_array_index_type
,
3853 GFC_TYPE_ARRAY_LBOUND (type
, n
), tmp
);
3854 tmp
= gfc_evaluate_now (tmp
, block
);
3855 GFC_TYPE_ARRAY_UBOUND (type
, n
) = tmp
;
3857 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
,
3858 GFC_TYPE_ARRAY_LBOUND (type
, n
),
3859 GFC_TYPE_ARRAY_STRIDE (type
, n
));
3860 offset
= fold_build2_loc (input_location
, MINUS_EXPR
,
3861 gfc_array_index_type
, offset
, tmp
);
3863 offset
= gfc_evaluate_now (offset
, block
);
3864 GFC_TYPE_ARRAY_OFFSET (type
) = offset
;
3868 /* Extend MAPPING so that it maps dummy argument SYM to the value stored
3869 in SE. The caller may still use se->expr and se->string_length after
3870 calling this function. */
3873 gfc_add_interface_mapping (gfc_interface_mapping
* mapping
,
3874 gfc_symbol
* sym
, gfc_se
* se
,
3877 gfc_interface_sym_mapping
*sm
;
3881 gfc_symbol
*new_sym
;
3883 gfc_symtree
*new_symtree
;
3885 /* Create a new symbol to represent the actual argument. */
3886 new_sym
= gfc_new_symbol (sym
->name
, NULL
);
3887 new_sym
->ts
= sym
->ts
;
3888 new_sym
->as
= gfc_copy_array_spec (sym
->as
);
3889 new_sym
->attr
.referenced
= 1;
3890 new_sym
->attr
.dimension
= sym
->attr
.dimension
;
3891 new_sym
->attr
.contiguous
= sym
->attr
.contiguous
;
3892 new_sym
->attr
.codimension
= sym
->attr
.codimension
;
3893 new_sym
->attr
.pointer
= sym
->attr
.pointer
;
3894 new_sym
->attr
.allocatable
= sym
->attr
.allocatable
;
3895 new_sym
->attr
.flavor
= sym
->attr
.flavor
;
3896 new_sym
->attr
.function
= sym
->attr
.function
;
3898 /* Ensure that the interface is available and that
3899 descriptors are passed for array actual arguments. */
3900 if (sym
->attr
.flavor
== FL_PROCEDURE
)
3902 new_sym
->formal
= expr
->symtree
->n
.sym
->formal
;
3903 new_sym
->attr
.always_explicit
3904 = expr
->symtree
->n
.sym
->attr
.always_explicit
;
3907 /* Create a fake symtree for it. */
3909 new_symtree
= gfc_new_symtree (&root
, sym
->name
);
3910 new_symtree
->n
.sym
= new_sym
;
3911 gcc_assert (new_symtree
== root
);
3913 /* Create a dummy->actual mapping. */
3914 sm
= XCNEW (gfc_interface_sym_mapping
);
3915 sm
->next
= mapping
->syms
;
3917 sm
->new_sym
= new_symtree
;
3918 sm
->expr
= gfc_copy_expr (expr
);
3921 /* Stabilize the argument's value. */
3922 if (!sym
->attr
.function
&& se
)
3923 se
->expr
= gfc_evaluate_now (se
->expr
, &se
->pre
);
3925 if (sym
->ts
.type
== BT_CHARACTER
)
3927 /* Create a copy of the dummy argument's length. */
3928 new_sym
->ts
.u
.cl
= gfc_get_interface_mapping_charlen (mapping
, sym
->ts
.u
.cl
);
3929 sm
->expr
->ts
.u
.cl
= new_sym
->ts
.u
.cl
;
3931 /* If the length is specified as "*", record the length that
3932 the caller is passing. We should use the callee's length
3933 in all other cases. */
3934 if (!new_sym
->ts
.u
.cl
->length
&& se
)
3936 se
->string_length
= gfc_evaluate_now (se
->string_length
, &se
->pre
);
3937 new_sym
->ts
.u
.cl
->backend_decl
= se
->string_length
;
3944 /* Use the passed value as-is if the argument is a function. */
3945 if (sym
->attr
.flavor
== FL_PROCEDURE
)
3948 /* If the argument is a pass-by-value scalar, use the value as is. */
3949 else if (!sym
->attr
.dimension
&& sym
->attr
.value
)
3952 /* If the argument is either a string or a pointer to a string,
3953 convert it to a boundless character type. */
3954 else if (!sym
->attr
.dimension
&& sym
->ts
.type
== BT_CHARACTER
)
3956 tmp
= gfc_get_character_type_len (sym
->ts
.kind
, NULL
);
3957 tmp
= build_pointer_type (tmp
);
3958 if (sym
->attr
.pointer
)
3959 value
= build_fold_indirect_ref_loc (input_location
,
3963 value
= fold_convert (tmp
, value
);
3966 /* If the argument is a scalar, a pointer to an array or an allocatable,
3968 else if (!sym
->attr
.dimension
|| sym
->attr
.pointer
|| sym
->attr
.allocatable
)
3969 value
= build_fold_indirect_ref_loc (input_location
,
3972 /* For character(*), use the actual argument's descriptor. */
3973 else if (sym
->ts
.type
== BT_CHARACTER
&& !new_sym
->ts
.u
.cl
->length
)
3974 value
= build_fold_indirect_ref_loc (input_location
,
3977 /* If the argument is an array descriptor, use it to determine
3978 information about the actual argument's shape. */
3979 else if (POINTER_TYPE_P (TREE_TYPE (se
->expr
))
3980 && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (TREE_TYPE (se
->expr
))))
3982 /* Get the actual argument's descriptor. */
3983 desc
= build_fold_indirect_ref_loc (input_location
,
3986 /* Create the replacement variable. */
3987 tmp
= gfc_conv_descriptor_data_get (desc
);
3988 value
= gfc_get_interface_mapping_array (&se
->pre
, sym
,
3991 /* Use DESC to work out the upper bounds, strides and offset. */
3992 gfc_set_interface_mapping_bounds (&se
->pre
, TREE_TYPE (value
), desc
);
3995 /* Otherwise we have a packed array. */
3996 value
= gfc_get_interface_mapping_array (&se
->pre
, sym
,
3997 PACKED_FULL
, se
->expr
);
3999 new_sym
->backend_decl
= value
;
4003 /* Called once all dummy argument mappings have been added to MAPPING,
4004 but before the mapping is used to evaluate expressions. Pre-evaluate
4005 the length of each argument, adding any initialization code to PRE and
4006 any finalization code to POST. */
4009 gfc_finish_interface_mapping (gfc_interface_mapping
* mapping
,
4010 stmtblock_t
* pre
, stmtblock_t
* post
)
4012 gfc_interface_sym_mapping
*sym
;
4016 for (sym
= mapping
->syms
; sym
; sym
= sym
->next
)
4017 if (sym
->new_sym
->n
.sym
->ts
.type
== BT_CHARACTER
4018 && !sym
->new_sym
->n
.sym
->ts
.u
.cl
->backend_decl
)
4020 expr
= sym
->new_sym
->n
.sym
->ts
.u
.cl
->length
;
4021 gfc_apply_interface_mapping_to_expr (mapping
, expr
);
4022 gfc_init_se (&se
, NULL
);
4023 gfc_conv_expr (&se
, expr
);
4024 se
.expr
= fold_convert (gfc_charlen_type_node
, se
.expr
);
4025 se
.expr
= gfc_evaluate_now (se
.expr
, &se
.pre
);
4026 gfc_add_block_to_block (pre
, &se
.pre
);
4027 gfc_add_block_to_block (post
, &se
.post
);
4029 sym
->new_sym
->n
.sym
->ts
.u
.cl
->backend_decl
= se
.expr
;
4034 /* Like gfc_apply_interface_mapping_to_expr, but applied to
4038 gfc_apply_interface_mapping_to_cons (gfc_interface_mapping
* mapping
,
4039 gfc_constructor_base base
)
4042 for (c
= gfc_constructor_first (base
); c
; c
= gfc_constructor_next (c
))
4044 gfc_apply_interface_mapping_to_expr (mapping
, c
->expr
);
4047 gfc_apply_interface_mapping_to_expr (mapping
, c
->iterator
->start
);
4048 gfc_apply_interface_mapping_to_expr (mapping
, c
->iterator
->end
);
4049 gfc_apply_interface_mapping_to_expr (mapping
, c
->iterator
->step
);
4055 /* Like gfc_apply_interface_mapping_to_expr, but applied to
4059 gfc_apply_interface_mapping_to_ref (gfc_interface_mapping
* mapping
,
4064 for (; ref
; ref
= ref
->next
)
4068 for (n
= 0; n
< ref
->u
.ar
.dimen
; n
++)
4070 gfc_apply_interface_mapping_to_expr (mapping
, ref
->u
.ar
.start
[n
]);
4071 gfc_apply_interface_mapping_to_expr (mapping
, ref
->u
.ar
.end
[n
]);
4072 gfc_apply_interface_mapping_to_expr (mapping
, ref
->u
.ar
.stride
[n
]);
4080 gfc_apply_interface_mapping_to_expr (mapping
, ref
->u
.ss
.start
);
4081 gfc_apply_interface_mapping_to_expr (mapping
, ref
->u
.ss
.end
);
4087 /* Convert intrinsic function calls into result expressions. */
4090 gfc_map_intrinsic_function (gfc_expr
*expr
, gfc_interface_mapping
*mapping
)
4098 arg1
= expr
->value
.function
.actual
->expr
;
4099 if (expr
->value
.function
.actual
->next
)
4100 arg2
= expr
->value
.function
.actual
->next
->expr
;
4104 sym
= arg1
->symtree
->n
.sym
;
4106 if (sym
->attr
.dummy
)
4111 switch (expr
->value
.function
.isym
->id
)
4114 /* TODO figure out why this condition is necessary. */
4115 if (sym
->attr
.function
4116 && (arg1
->ts
.u
.cl
->length
== NULL
4117 || (arg1
->ts
.u
.cl
->length
->expr_type
!= EXPR_CONSTANT
4118 && arg1
->ts
.u
.cl
->length
->expr_type
!= EXPR_VARIABLE
)))
4121 new_expr
= gfc_copy_expr (arg1
->ts
.u
.cl
->length
);
4124 case GFC_ISYM_LEN_TRIM
:
4125 new_expr
= gfc_copy_expr (arg1
);
4126 gfc_apply_interface_mapping_to_expr (mapping
, new_expr
);
4131 gfc_replace_expr (arg1
, new_expr
);
4135 if (!sym
->as
|| sym
->as
->rank
== 0)
4138 if (arg2
&& arg2
->expr_type
== EXPR_CONSTANT
)
4140 dup
= mpz_get_si (arg2
->value
.integer
);
4145 dup
= sym
->as
->rank
;
4149 for (; d
< dup
; d
++)
4153 if (!sym
->as
->upper
[d
] || !sym
->as
->lower
[d
])
4155 gfc_free_expr (new_expr
);
4159 tmp
= gfc_add (gfc_copy_expr (sym
->as
->upper
[d
]),
4160 gfc_get_int_expr (gfc_default_integer_kind
,
4162 tmp
= gfc_subtract (tmp
, gfc_copy_expr (sym
->as
->lower
[d
]));
4164 new_expr
= gfc_multiply (new_expr
, tmp
);
4170 case GFC_ISYM_LBOUND
:
4171 case GFC_ISYM_UBOUND
:
4172 /* TODO These implementations of lbound and ubound do not limit if
4173 the size < 0, according to F95's 13.14.53 and 13.14.113. */
4175 if (!sym
->as
|| sym
->as
->rank
== 0)
4178 if (arg2
&& arg2
->expr_type
== EXPR_CONSTANT
)
4179 d
= mpz_get_si (arg2
->value
.integer
) - 1;
4181 /* TODO: If the need arises, this could produce an array of
4185 if (expr
->value
.function
.isym
->id
== GFC_ISYM_LBOUND
)
4187 if (sym
->as
->lower
[d
])
4188 new_expr
= gfc_copy_expr (sym
->as
->lower
[d
]);
4192 if (sym
->as
->upper
[d
])
4193 new_expr
= gfc_copy_expr (sym
->as
->upper
[d
]);
4201 gfc_apply_interface_mapping_to_expr (mapping
, new_expr
);
4205 gfc_replace_expr (expr
, new_expr
);
4211 gfc_map_fcn_formal_to_actual (gfc_expr
*expr
, gfc_expr
*map_expr
,
4212 gfc_interface_mapping
* mapping
)
4214 gfc_formal_arglist
*f
;
4215 gfc_actual_arglist
*actual
;
4217 actual
= expr
->value
.function
.actual
;
4218 f
= gfc_sym_get_dummy_args (map_expr
->symtree
->n
.sym
);
4220 for (; f
&& actual
; f
= f
->next
, actual
= actual
->next
)
4225 gfc_add_interface_mapping (mapping
, f
->sym
, NULL
, actual
->expr
);
4228 if (map_expr
->symtree
->n
.sym
->attr
.dimension
)
4233 as
= gfc_copy_array_spec (map_expr
->symtree
->n
.sym
->as
);
4235 for (d
= 0; d
< as
->rank
; d
++)
4237 gfc_apply_interface_mapping_to_expr (mapping
, as
->lower
[d
]);
4238 gfc_apply_interface_mapping_to_expr (mapping
, as
->upper
[d
]);
4241 expr
->value
.function
.esym
->as
= as
;
4244 if (map_expr
->symtree
->n
.sym
->ts
.type
== BT_CHARACTER
)
4246 expr
->value
.function
.esym
->ts
.u
.cl
->length
4247 = gfc_copy_expr (map_expr
->symtree
->n
.sym
->ts
.u
.cl
->length
);
4249 gfc_apply_interface_mapping_to_expr (mapping
,
4250 expr
->value
.function
.esym
->ts
.u
.cl
->length
);
4255 /* EXPR is a copy of an expression that appeared in the interface
4256 associated with MAPPING. Walk it recursively looking for references to
4257 dummy arguments that MAPPING maps to actual arguments. Replace each such
4258 reference with a reference to the associated actual argument. */
4261 gfc_apply_interface_mapping_to_expr (gfc_interface_mapping
* mapping
,
4264 gfc_interface_sym_mapping
*sym
;
4265 gfc_actual_arglist
*actual
;
4270 /* Copying an expression does not copy its length, so do that here. */
4271 if (expr
->ts
.type
== BT_CHARACTER
&& expr
->ts
.u
.cl
)
4273 expr
->ts
.u
.cl
= gfc_get_interface_mapping_charlen (mapping
, expr
->ts
.u
.cl
);
4274 gfc_apply_interface_mapping_to_expr (mapping
, expr
->ts
.u
.cl
->length
);
4277 /* Apply the mapping to any references. */
4278 gfc_apply_interface_mapping_to_ref (mapping
, expr
->ref
);
4280 /* ...and to the expression's symbol, if it has one. */
4281 /* TODO Find out why the condition on expr->symtree had to be moved into
4282 the loop rather than being outside it, as originally. */
4283 for (sym
= mapping
->syms
; sym
; sym
= sym
->next
)
4284 if (expr
->symtree
&& sym
->old
== expr
->symtree
->n
.sym
)
4286 if (sym
->new_sym
->n
.sym
->backend_decl
)
4287 expr
->symtree
= sym
->new_sym
;
4289 gfc_replace_expr (expr
, gfc_copy_expr (sym
->expr
));
4292 /* ...and to subexpressions in expr->value. */
4293 switch (expr
->expr_type
)
4298 case EXPR_SUBSTRING
:
4302 gfc_apply_interface_mapping_to_expr (mapping
, expr
->value
.op
.op1
);
4303 gfc_apply_interface_mapping_to_expr (mapping
, expr
->value
.op
.op2
);
4307 for (actual
= expr
->value
.function
.actual
; actual
; actual
= actual
->next
)
4308 gfc_apply_interface_mapping_to_expr (mapping
, actual
->expr
);
4310 if (expr
->value
.function
.esym
== NULL
4311 && expr
->value
.function
.isym
!= NULL
4312 && expr
->value
.function
.actual
->expr
->symtree
4313 && gfc_map_intrinsic_function (expr
, mapping
))
4316 for (sym
= mapping
->syms
; sym
; sym
= sym
->next
)
4317 if (sym
->old
== expr
->value
.function
.esym
)
4319 expr
->value
.function
.esym
= sym
->new_sym
->n
.sym
;
4320 gfc_map_fcn_formal_to_actual (expr
, sym
->expr
, mapping
);
4321 expr
->value
.function
.esym
->result
= sym
->new_sym
->n
.sym
;
4326 case EXPR_STRUCTURE
:
4327 gfc_apply_interface_mapping_to_cons (mapping
, expr
->value
.constructor
);
4340 /* Evaluate interface expression EXPR using MAPPING. Store the result
4344 gfc_apply_interface_mapping (gfc_interface_mapping
* mapping
,
4345 gfc_se
* se
, gfc_expr
* expr
)
4347 expr
= gfc_copy_expr (expr
);
4348 gfc_apply_interface_mapping_to_expr (mapping
, expr
);
4349 gfc_conv_expr (se
, expr
);
4350 se
->expr
= gfc_evaluate_now (se
->expr
, &se
->pre
);
4351 gfc_free_expr (expr
);
4355 /* Returns a reference to a temporary array into which a component of
4356 an actual argument derived type array is copied and then returned
4357 after the function call. */
4359 gfc_conv_subref_array_arg (gfc_se
* parmse
, gfc_expr
* expr
, int g77
,
4360 sym_intent intent
, bool formal_ptr
)
4368 gfc_array_info
*info
;
4378 gfc_init_se (&lse
, NULL
);
4379 gfc_init_se (&rse
, NULL
);
4381 /* Walk the argument expression. */
4382 rss
= gfc_walk_expr (expr
);
4384 gcc_assert (rss
!= gfc_ss_terminator
);
4386 /* Initialize the scalarizer. */
4387 gfc_init_loopinfo (&loop
);
4388 gfc_add_ss_to_loop (&loop
, rss
);
4390 /* Calculate the bounds of the scalarization. */
4391 gfc_conv_ss_startstride (&loop
);
4393 /* Build an ss for the temporary. */
4394 if (expr
->ts
.type
== BT_CHARACTER
&& !expr
->ts
.u
.cl
->backend_decl
)
4395 gfc_conv_string_length (expr
->ts
.u
.cl
, expr
, &parmse
->pre
);
4397 base_type
= gfc_typenode_for_spec (&expr
->ts
);
4398 if (GFC_ARRAY_TYPE_P (base_type
)
4399 || GFC_DESCRIPTOR_TYPE_P (base_type
))
4400 base_type
= gfc_get_element_type (base_type
);
4402 if (expr
->ts
.type
== BT_CLASS
)
4403 base_type
= gfc_typenode_for_spec (&CLASS_DATA (expr
)->ts
);
4405 loop
.temp_ss
= gfc_get_temp_ss (base_type
, ((expr
->ts
.type
== BT_CHARACTER
)
4406 ? expr
->ts
.u
.cl
->backend_decl
4410 parmse
->string_length
= loop
.temp_ss
->info
->string_length
;
4412 /* Associate the SS with the loop. */
4413 gfc_add_ss_to_loop (&loop
, loop
.temp_ss
);
4415 /* Setup the scalarizing loops. */
4416 gfc_conv_loop_setup (&loop
, &expr
->where
);
4418 /* Pass the temporary descriptor back to the caller. */
4419 info
= &loop
.temp_ss
->info
->data
.array
;
4420 parmse
->expr
= info
->descriptor
;
4422 /* Setup the gfc_se structures. */
4423 gfc_copy_loopinfo_to_se (&lse
, &loop
);
4424 gfc_copy_loopinfo_to_se (&rse
, &loop
);
4427 lse
.ss
= loop
.temp_ss
;
4428 gfc_mark_ss_chain_used (rss
, 1);
4429 gfc_mark_ss_chain_used (loop
.temp_ss
, 1);
4431 /* Start the scalarized loop body. */
4432 gfc_start_scalarized_body (&loop
, &body
);
4434 /* Translate the expression. */
4435 gfc_conv_expr (&rse
, expr
);
4437 /* Reset the offset for the function call since the loop
4438 is zero based on the data pointer. Note that the temp
4439 comes first in the loop chain since it is added second. */
4440 if (gfc_is_alloc_class_array_function (expr
))
4442 tmp
= loop
.ss
->loop_chain
->info
->data
.array
.descriptor
;
4443 gfc_conv_descriptor_offset_set (&loop
.pre
, tmp
,
4444 gfc_index_zero_node
);
4447 gfc_conv_tmp_array_ref (&lse
);
4449 if (intent
!= INTENT_OUT
)
4451 tmp
= gfc_trans_scalar_assign (&lse
, &rse
, expr
->ts
, false, false);
4452 gfc_add_expr_to_block (&body
, tmp
);
4453 gcc_assert (rse
.ss
== gfc_ss_terminator
);
4454 gfc_trans_scalarizing_loops (&loop
, &body
);
4458 /* Make sure that the temporary declaration survives by merging
4459 all the loop declarations into the current context. */
4460 for (n
= 0; n
< loop
.dimen
; n
++)
4462 gfc_merge_block_scope (&body
);
4463 body
= loop
.code
[loop
.order
[n
]];
4465 gfc_merge_block_scope (&body
);
4468 /* Add the post block after the second loop, so that any
4469 freeing of allocated memory is done at the right time. */
4470 gfc_add_block_to_block (&parmse
->pre
, &loop
.pre
);
4472 /**********Copy the temporary back again.*********/
4474 gfc_init_se (&lse
, NULL
);
4475 gfc_init_se (&rse
, NULL
);
4477 /* Walk the argument expression. */
4478 lss
= gfc_walk_expr (expr
);
4479 rse
.ss
= loop
.temp_ss
;
4482 /* Initialize the scalarizer. */
4483 gfc_init_loopinfo (&loop2
);
4484 gfc_add_ss_to_loop (&loop2
, lss
);
4486 dimen
= rse
.ss
->dimen
;
4488 /* Skip the write-out loop for this case. */
4489 if (gfc_is_alloc_class_array_function (expr
))
4490 goto class_array_fcn
;
4492 /* Calculate the bounds of the scalarization. */
4493 gfc_conv_ss_startstride (&loop2
);
4495 /* Setup the scalarizing loops. */
4496 gfc_conv_loop_setup (&loop2
, &expr
->where
);
4498 gfc_copy_loopinfo_to_se (&lse
, &loop2
);
4499 gfc_copy_loopinfo_to_se (&rse
, &loop2
);
4501 gfc_mark_ss_chain_used (lss
, 1);
4502 gfc_mark_ss_chain_used (loop
.temp_ss
, 1);
4504 /* Declare the variable to hold the temporary offset and start the
4505 scalarized loop body. */
4506 offset
= gfc_create_var (gfc_array_index_type
, NULL
);
4507 gfc_start_scalarized_body (&loop2
, &body
);
4509 /* Build the offsets for the temporary from the loop variables. The
4510 temporary array has lbounds of zero and strides of one in all
4511 dimensions, so this is very simple. The offset is only computed
4512 outside the innermost loop, so the overall transfer could be
4513 optimized further. */
4514 info
= &rse
.ss
->info
->data
.array
;
4516 tmp_index
= gfc_index_zero_node
;
4517 for (n
= dimen
- 1; n
> 0; n
--)
4520 tmp
= rse
.loop
->loopvar
[n
];
4521 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
, gfc_array_index_type
,
4522 tmp
, rse
.loop
->from
[n
]);
4523 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
, gfc_array_index_type
,
4526 tmp_str
= fold_build2_loc (input_location
, MINUS_EXPR
,
4527 gfc_array_index_type
,
4528 rse
.loop
->to
[n
-1], rse
.loop
->from
[n
-1]);
4529 tmp_str
= fold_build2_loc (input_location
, PLUS_EXPR
,
4530 gfc_array_index_type
,
4531 tmp_str
, gfc_index_one_node
);
4533 tmp_index
= fold_build2_loc (input_location
, MULT_EXPR
,
4534 gfc_array_index_type
, tmp
, tmp_str
);
4537 tmp_index
= fold_build2_loc (input_location
, MINUS_EXPR
,
4538 gfc_array_index_type
,
4539 tmp_index
, rse
.loop
->from
[0]);
4540 gfc_add_modify (&rse
.loop
->code
[0], offset
, tmp_index
);
4542 tmp_index
= fold_build2_loc (input_location
, PLUS_EXPR
,
4543 gfc_array_index_type
,
4544 rse
.loop
->loopvar
[0], offset
);
4546 /* Now use the offset for the reference. */
4547 tmp
= build_fold_indirect_ref_loc (input_location
,
4549 rse
.expr
= gfc_build_array_ref (tmp
, tmp_index
, NULL
);
4551 if (expr
->ts
.type
== BT_CHARACTER
)
4552 rse
.string_length
= expr
->ts
.u
.cl
->backend_decl
;
4554 gfc_conv_expr (&lse
, expr
);
4556 gcc_assert (lse
.ss
== gfc_ss_terminator
);
4558 tmp
= gfc_trans_scalar_assign (&lse
, &rse
, expr
->ts
, false, true);
4559 gfc_add_expr_to_block (&body
, tmp
);
4561 /* Generate the copying loops. */
4562 gfc_trans_scalarizing_loops (&loop2
, &body
);
4564 /* Wrap the whole thing up by adding the second loop to the post-block
4565 and following it by the post-block of the first loop. In this way,
4566 if the temporary needs freeing, it is done after use! */
4567 if (intent
!= INTENT_IN
)
4569 gfc_add_block_to_block (&parmse
->post
, &loop2
.pre
);
4570 gfc_add_block_to_block (&parmse
->post
, &loop2
.post
);
4575 gfc_add_block_to_block (&parmse
->post
, &loop
.post
);
4577 gfc_cleanup_loop (&loop
);
4578 gfc_cleanup_loop (&loop2
);
4580 /* Pass the string length to the argument expression. */
4581 if (expr
->ts
.type
== BT_CHARACTER
)
4582 parmse
->string_length
= expr
->ts
.u
.cl
->backend_decl
;
4584 /* Determine the offset for pointer formal arguments and set the
4588 size
= gfc_index_one_node
;
4589 offset
= gfc_index_zero_node
;
4590 for (n
= 0; n
< dimen
; n
++)
4592 tmp
= gfc_conv_descriptor_ubound_get (parmse
->expr
,
4594 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
,
4595 gfc_array_index_type
, tmp
,
4596 gfc_index_one_node
);
4597 gfc_conv_descriptor_ubound_set (&parmse
->pre
,
4601 gfc_conv_descriptor_lbound_set (&parmse
->pre
,
4604 gfc_index_one_node
);
4605 size
= gfc_evaluate_now (size
, &parmse
->pre
);
4606 offset
= fold_build2_loc (input_location
, MINUS_EXPR
,
4607 gfc_array_index_type
,
4609 offset
= gfc_evaluate_now (offset
, &parmse
->pre
);
4610 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
4611 gfc_array_index_type
,
4612 rse
.loop
->to
[n
], rse
.loop
->from
[n
]);
4613 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
,
4614 gfc_array_index_type
,
4615 tmp
, gfc_index_one_node
);
4616 size
= fold_build2_loc (input_location
, MULT_EXPR
,
4617 gfc_array_index_type
, size
, tmp
);
4620 gfc_conv_descriptor_offset_set (&parmse
->pre
, parmse
->expr
,
4624 /* We want either the address for the data or the address of the descriptor,
4625 depending on the mode of passing array arguments. */
4627 parmse
->expr
= gfc_conv_descriptor_data_get (parmse
->expr
);
4629 parmse
->expr
= gfc_build_addr_expr (NULL_TREE
, parmse
->expr
);
4635 /* Generate the code for argument list functions. */
4638 conv_arglist_function (gfc_se
*se
, gfc_expr
*expr
, const char *name
)
4640 /* Pass by value for g77 %VAL(arg), pass the address
4641 indirectly for %LOC, else by reference. Thus %REF
4642 is a "do-nothing" and %LOC is the same as an F95
4644 if (strncmp (name
, "%VAL", 4) == 0)
4645 gfc_conv_expr (se
, expr
);
4646 else if (strncmp (name
, "%LOC", 4) == 0)
4648 gfc_conv_expr_reference (se
, expr
);
4649 se
->expr
= gfc_build_addr_expr (NULL
, se
->expr
);
4651 else if (strncmp (name
, "%REF", 4) == 0)
4652 gfc_conv_expr_reference (se
, expr
);
4654 gfc_error ("Unknown argument list function at %L", &expr
->where
);
4658 /* This function tells whether the middle-end representation of the expression
4659 E given as input may point to data otherwise accessible through a variable
4661 It is assumed that the only expressions that may alias are variables,
4662 and array constructors if ARRAY_MAY_ALIAS is true and some of its elements
4664 This function is used to decide whether freeing an expression's allocatable
4665 components is safe or should be avoided.
4667 If ARRAY_MAY_ALIAS is true, an array constructor may alias if some of
4668 its elements are copied from a variable. This ARRAY_MAY_ALIAS trick
4669 is necessary because for array constructors, aliasing depends on how
4671 - If E is an array constructor used as argument to an elemental procedure,
4672 the array, which is generated through shallow copy by the scalarizer,
4673 is used directly and can alias the expressions it was copied from.
4674 - If E is an array constructor used as argument to a non-elemental
4675 procedure,the scalarizer is used in gfc_conv_expr_descriptor to generate
4676 the array as in the previous case, but then that array is used
4677 to initialize a new descriptor through deep copy. There is no alias
4678 possible in that case.
4679 Thus, the ARRAY_MAY_ALIAS flag is necessary to distinguish the two cases
4683 expr_may_alias_variables (gfc_expr
*e
, bool array_may_alias
)
4687 if (e
->expr_type
== EXPR_VARIABLE
)
4689 else if (e
->expr_type
== EXPR_FUNCTION
)
4691 gfc_symbol
*proc_ifc
= gfc_get_proc_ifc_for_expr (e
);
4693 if (proc_ifc
->result
!= NULL
4694 && ((proc_ifc
->result
->ts
.type
== BT_CLASS
4695 && proc_ifc
->result
->ts
.u
.derived
->attr
.is_class
4696 && CLASS_DATA (proc_ifc
->result
)->attr
.class_pointer
)
4697 || proc_ifc
->result
->attr
.pointer
))
4702 else if (e
->expr_type
!= EXPR_ARRAY
|| !array_may_alias
)
4705 for (c
= gfc_constructor_first (e
->value
.constructor
);
4706 c
; c
= gfc_constructor_next (c
))
4708 && expr_may_alias_variables (c
->expr
, array_may_alias
))
4715 /* Generate code for a procedure call. Note can return se->post != NULL.
4716 If se->direct_byref is set then se->expr contains the return parameter.
4717 Return nonzero, if the call has alternate specifiers.
4718 'expr' is only needed for procedure pointer components. */
4721 gfc_conv_procedure_call (gfc_se
* se
, gfc_symbol
* sym
,
4722 gfc_actual_arglist
* args
, gfc_expr
* expr
,
4723 vec
<tree
, va_gc
> *append_args
)
4725 gfc_interface_mapping mapping
;
4726 vec
<tree
, va_gc
> *arglist
;
4727 vec
<tree
, va_gc
> *retargs
;
4731 gfc_array_info
*info
;
4738 vec
<tree
, va_gc
> *stringargs
;
4739 vec
<tree
, va_gc
> *optionalargs
;
4741 gfc_formal_arglist
*formal
;
4742 gfc_actual_arglist
*arg
;
4743 int has_alternate_specifier
= 0;
4744 bool need_interface_mapping
;
4752 enum {MISSING
= 0, ELEMENTAL
, SCALAR
, SCALAR_POINTER
, ARRAY
};
4753 gfc_component
*comp
= NULL
;
4760 optionalargs
= NULL
;
4765 comp
= gfc_get_proc_ptr_comp (expr
);
4767 bool elemental_proc
= (comp
4768 && comp
->ts
.interface
4769 && comp
->ts
.interface
->attr
.elemental
)
4770 || (comp
&& comp
->attr
.elemental
)
4771 || sym
->attr
.elemental
;
4775 if (!elemental_proc
)
4777 gcc_assert (se
->ss
->info
->type
== GFC_SS_FUNCTION
);
4778 if (se
->ss
->info
->useflags
)
4780 gcc_assert ((!comp
&& gfc_return_by_reference (sym
)
4781 && sym
->result
->attr
.dimension
)
4782 || (comp
&& comp
->attr
.dimension
)
4783 || gfc_is_alloc_class_array_function (expr
));
4784 gcc_assert (se
->loop
!= NULL
);
4785 /* Access the previously obtained result. */
4786 gfc_conv_tmp_array_ref (se
);
4790 info
= &se
->ss
->info
->data
.array
;
4795 gfc_init_block (&post
);
4796 gfc_init_interface_mapping (&mapping
);
4799 formal
= gfc_sym_get_dummy_args (sym
);
4800 need_interface_mapping
= sym
->attr
.dimension
||
4801 (sym
->ts
.type
== BT_CHARACTER
4802 && sym
->ts
.u
.cl
->length
4803 && sym
->ts
.u
.cl
->length
->expr_type
4808 formal
= comp
->ts
.interface
? comp
->ts
.interface
->formal
: NULL
;
4809 need_interface_mapping
= comp
->attr
.dimension
||
4810 (comp
->ts
.type
== BT_CHARACTER
4811 && comp
->ts
.u
.cl
->length
4812 && comp
->ts
.u
.cl
->length
->expr_type
4816 base_object
= NULL_TREE
;
4817 /* For _vprt->_copy () routines no formal symbol is present. Nevertheless
4818 is the third and fourth argument to such a function call a value
4819 denoting the number of elements to copy (i.e., most of the time the
4820 length of a deferred length string). */
4821 ulim_copy
= (formal
== NULL
)
4822 && UNLIMITED_POLY (sym
)
4823 && comp
&& (strcmp ("_copy", comp
->name
) == 0);
4825 /* Evaluate the arguments. */
4826 for (arg
= args
, argc
= 0; arg
!= NULL
;
4827 arg
= arg
->next
, formal
= formal
? formal
->next
: NULL
, ++argc
)
4830 fsym
= formal
? formal
->sym
: NULL
;
4831 parm_kind
= MISSING
;
4833 /* If the procedure requires an explicit interface, the actual
4834 argument is passed according to the corresponding formal
4835 argument. If the corresponding formal argument is a POINTER,
4836 ALLOCATABLE or assumed shape, we do not use g77's calling
4837 convention, and pass the address of the array descriptor
4838 instead. Otherwise we use g77's calling convention, in other words
4839 pass the array data pointer without descriptor. */
4840 bool nodesc_arg
= fsym
!= NULL
4841 && !(fsym
->attr
.pointer
|| fsym
->attr
.allocatable
)
4843 && fsym
->as
->type
!= AS_ASSUMED_SHAPE
4844 && fsym
->as
->type
!= AS_ASSUMED_RANK
;
4846 nodesc_arg
= nodesc_arg
|| !comp
->attr
.always_explicit
;
4848 nodesc_arg
= nodesc_arg
|| !sym
->attr
.always_explicit
;
4850 /* Class array expressions are sometimes coming completely unadorned
4851 with either arrayspec or _data component. Correct that here.
4852 OOP-TODO: Move this to the frontend. */
4853 if (e
&& e
->expr_type
== EXPR_VARIABLE
4855 && e
->ts
.type
== BT_CLASS
4856 && (CLASS_DATA (e
)->attr
.codimension
4857 || CLASS_DATA (e
)->attr
.dimension
))
4859 gfc_typespec temp_ts
= e
->ts
;
4860 gfc_add_class_array_ref (e
);
4866 if (se
->ignore_optional
)
4868 /* Some intrinsics have already been resolved to the correct
4872 else if (arg
->label
)
4874 has_alternate_specifier
= 1;
4879 gfc_init_se (&parmse
, NULL
);
4881 /* For scalar arguments with VALUE attribute which are passed by
4882 value, pass "0" and a hidden argument gives the optional
4884 if (fsym
&& fsym
->attr
.optional
&& fsym
->attr
.value
4885 && !fsym
->attr
.dimension
&& fsym
->ts
.type
!= BT_CHARACTER
4886 && fsym
->ts
.type
!= BT_CLASS
&& fsym
->ts
.type
!= BT_DERIVED
)
4888 parmse
.expr
= fold_convert (gfc_sym_type (fsym
),
4890 vec_safe_push (optionalargs
, boolean_false_node
);
4894 /* Pass a NULL pointer for an absent arg. */
4895 parmse
.expr
= null_pointer_node
;
4896 if (arg
->missing_arg_type
== BT_CHARACTER
)
4897 parmse
.string_length
= build_int_cst (gfc_charlen_type_node
,
4902 else if (arg
->expr
->expr_type
== EXPR_NULL
4903 && fsym
&& !fsym
->attr
.pointer
4904 && (fsym
->ts
.type
!= BT_CLASS
4905 || !CLASS_DATA (fsym
)->attr
.class_pointer
))
4907 /* Pass a NULL pointer to denote an absent arg. */
4908 gcc_assert (fsym
->attr
.optional
&& !fsym
->attr
.allocatable
4909 && (fsym
->ts
.type
!= BT_CLASS
4910 || !CLASS_DATA (fsym
)->attr
.allocatable
));
4911 gfc_init_se (&parmse
, NULL
);
4912 parmse
.expr
= null_pointer_node
;
4913 if (arg
->missing_arg_type
== BT_CHARACTER
)
4914 parmse
.string_length
= build_int_cst (gfc_charlen_type_node
, 0);
4916 else if (fsym
&& fsym
->ts
.type
== BT_CLASS
4917 && e
->ts
.type
== BT_DERIVED
)
4919 /* The derived type needs to be converted to a temporary
4921 gfc_init_se (&parmse
, se
);
4922 gfc_conv_derived_to_class (&parmse
, e
, fsym
->ts
, NULL
,
4924 && e
->expr_type
== EXPR_VARIABLE
4925 && e
->symtree
->n
.sym
->attr
.optional
,
4926 CLASS_DATA (fsym
)->attr
.class_pointer
4927 || CLASS_DATA (fsym
)->attr
.allocatable
);
4929 else if (UNLIMITED_POLY (fsym
) && e
->ts
.type
!= BT_CLASS
)
4931 /* The intrinsic type needs to be converted to a temporary
4932 CLASS object for the unlimited polymorphic formal. */
4933 gfc_init_se (&parmse
, se
);
4934 gfc_conv_intrinsic_to_class (&parmse
, e
, fsym
->ts
);
4936 else if (se
->ss
&& se
->ss
->info
->useflags
)
4942 /* An elemental function inside a scalarized loop. */
4943 gfc_init_se (&parmse
, se
);
4944 parm_kind
= ELEMENTAL
;
4946 /* When no fsym is present, ulim_copy is set and this is a third or
4947 fourth argument, use call-by-value instead of by reference to
4948 hand the length properties to the copy routine (i.e., most of the
4949 time this will be a call to a __copy_character_* routine where the
4950 third and fourth arguments are the lengths of a deferred length
4952 if ((fsym
&& fsym
->attr
.value
)
4953 || (ulim_copy
&& (argc
== 2 || argc
== 3)))
4954 gfc_conv_expr (&parmse
, e
);
4956 gfc_conv_expr_reference (&parmse
, e
);
4958 if (e
->ts
.type
== BT_CHARACTER
&& !e
->rank
4959 && e
->expr_type
== EXPR_FUNCTION
)
4960 parmse
.expr
= build_fold_indirect_ref_loc (input_location
,
4963 if (fsym
&& fsym
->ts
.type
== BT_DERIVED
4964 && gfc_is_class_container_ref (e
))
4966 parmse
.expr
= gfc_class_data_get (parmse
.expr
);
4968 if (fsym
->attr
.optional
&& e
->expr_type
== EXPR_VARIABLE
4969 && e
->symtree
->n
.sym
->attr
.optional
)
4971 tree cond
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
4972 parmse
.expr
= build3_loc (input_location
, COND_EXPR
,
4973 TREE_TYPE (parmse
.expr
),
4975 fold_convert (TREE_TYPE (parmse
.expr
),
4976 null_pointer_node
));
4980 /* If we are passing an absent array as optional dummy to an
4981 elemental procedure, make sure that we pass NULL when the data
4982 pointer is NULL. We need this extra conditional because of
4983 scalarization which passes arrays elements to the procedure,
4984 ignoring the fact that the array can be absent/unallocated/... */
4985 if (ss
->info
->can_be_null_ref
&& ss
->info
->type
!= GFC_SS_REFERENCE
)
4987 tree descriptor_data
;
4989 descriptor_data
= ss
->info
->data
.array
.data
;
4990 tmp
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
4992 fold_convert (TREE_TYPE (descriptor_data
),
4993 null_pointer_node
));
4995 = fold_build3_loc (input_location
, COND_EXPR
,
4996 TREE_TYPE (parmse
.expr
),
4997 gfc_unlikely (tmp
, PRED_FORTRAN_ABSENT_DUMMY
),
4998 fold_convert (TREE_TYPE (parmse
.expr
),
5003 /* The scalarizer does not repackage the reference to a class
5004 array - instead it returns a pointer to the data element. */
5005 if (fsym
&& fsym
->ts
.type
== BT_CLASS
&& e
->ts
.type
== BT_CLASS
)
5006 gfc_conv_class_to_class (&parmse
, e
, fsym
->ts
, true,
5007 fsym
->attr
.intent
!= INTENT_IN
5008 && (CLASS_DATA (fsym
)->attr
.class_pointer
5009 || CLASS_DATA (fsym
)->attr
.allocatable
),
5011 && e
->expr_type
== EXPR_VARIABLE
5012 && e
->symtree
->n
.sym
->attr
.optional
,
5013 CLASS_DATA (fsym
)->attr
.class_pointer
5014 || CLASS_DATA (fsym
)->attr
.allocatable
);
5021 gfc_init_se (&parmse
, NULL
);
5023 /* Check whether the expression is a scalar or not; we cannot use
5024 e->rank as it can be nonzero for functions arguments. */
5025 argss
= gfc_walk_expr (e
);
5026 scalar
= argss
== gfc_ss_terminator
;
5028 gfc_free_ss_chain (argss
);
5030 /* Special handling for passing scalar polymorphic coarrays;
5031 otherwise one passes "class->_data.data" instead of "&class". */
5032 if (e
->rank
== 0 && e
->ts
.type
== BT_CLASS
5033 && fsym
&& fsym
->ts
.type
== BT_CLASS
5034 && CLASS_DATA (fsym
)->attr
.codimension
5035 && !CLASS_DATA (fsym
)->attr
.dimension
)
5037 gfc_add_class_array_ref (e
);
5038 parmse
.want_coarray
= 1;
5042 /* A scalar or transformational function. */
5045 if (e
->expr_type
== EXPR_VARIABLE
5046 && e
->symtree
->n
.sym
->attr
.cray_pointee
5047 && fsym
&& fsym
->attr
.flavor
== FL_PROCEDURE
)
5049 /* The Cray pointer needs to be converted to a pointer to
5050 a type given by the expression. */
5051 gfc_conv_expr (&parmse
, e
);
5052 type
= build_pointer_type (TREE_TYPE (parmse
.expr
));
5053 tmp
= gfc_get_symbol_decl (e
->symtree
->n
.sym
->cp_pointer
);
5054 parmse
.expr
= convert (type
, tmp
);
5056 else if (fsym
&& fsym
->attr
.value
)
5058 if (fsym
->ts
.type
== BT_CHARACTER
5059 && fsym
->ts
.is_c_interop
5060 && fsym
->ns
->proc_name
!= NULL
5061 && fsym
->ns
->proc_name
->attr
.is_bind_c
)
5064 gfc_conv_scalar_char_value (fsym
, &parmse
, &e
);
5065 if (parmse
.expr
== NULL
)
5066 gfc_conv_expr (&parmse
, e
);
5070 gfc_conv_expr (&parmse
, e
);
5071 if (fsym
->attr
.optional
5072 && fsym
->ts
.type
!= BT_CLASS
5073 && fsym
->ts
.type
!= BT_DERIVED
)
5075 if (e
->expr_type
!= EXPR_VARIABLE
5076 || !e
->symtree
->n
.sym
->attr
.optional
5078 vec_safe_push (optionalargs
, boolean_true_node
);
5081 tmp
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
5082 if (!e
->symtree
->n
.sym
->attr
.value
)
5084 = fold_build3_loc (input_location
, COND_EXPR
,
5085 TREE_TYPE (parmse
.expr
),
5087 fold_convert (TREE_TYPE (parmse
.expr
),
5088 integer_zero_node
));
5090 vec_safe_push (optionalargs
, tmp
);
5095 else if (arg
->name
&& arg
->name
[0] == '%')
5096 /* Argument list functions %VAL, %LOC and %REF are signalled
5097 through arg->name. */
5098 conv_arglist_function (&parmse
, arg
->expr
, arg
->name
);
5099 else if ((e
->expr_type
== EXPR_FUNCTION
)
5100 && ((e
->value
.function
.esym
5101 && e
->value
.function
.esym
->result
->attr
.pointer
)
5102 || (!e
->value
.function
.esym
5103 && e
->symtree
->n
.sym
->attr
.pointer
))
5104 && fsym
&& fsym
->attr
.target
)
5106 gfc_conv_expr (&parmse
, e
);
5107 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
, parmse
.expr
);
5109 else if (e
->expr_type
== EXPR_FUNCTION
5110 && e
->symtree
->n
.sym
->result
5111 && e
->symtree
->n
.sym
->result
!= e
->symtree
->n
.sym
5112 && e
->symtree
->n
.sym
->result
->attr
.proc_pointer
)
5114 /* Functions returning procedure pointers. */
5115 gfc_conv_expr (&parmse
, e
);
5116 if (fsym
&& fsym
->attr
.proc_pointer
)
5117 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
, parmse
.expr
);
5121 if (e
->ts
.type
== BT_CLASS
&& fsym
5122 && fsym
->ts
.type
== BT_CLASS
5123 && (!CLASS_DATA (fsym
)->as
5124 || CLASS_DATA (fsym
)->as
->type
!= AS_ASSUMED_RANK
)
5125 && CLASS_DATA (e
)->attr
.codimension
)
5127 gcc_assert (!CLASS_DATA (fsym
)->attr
.codimension
);
5128 gcc_assert (!CLASS_DATA (fsym
)->as
);
5129 gfc_add_class_array_ref (e
);
5130 parmse
.want_coarray
= 1;
5131 gfc_conv_expr_reference (&parmse
, e
);
5132 class_scalar_coarray_to_class (&parmse
, e
, fsym
->ts
,
5134 && e
->expr_type
== EXPR_VARIABLE
);
5136 else if (e
->ts
.type
== BT_CLASS
&& fsym
5137 && fsym
->ts
.type
== BT_CLASS
5138 && !CLASS_DATA (fsym
)->as
5139 && !CLASS_DATA (e
)->as
5140 && strcmp (fsym
->ts
.u
.derived
->name
,
5141 e
->ts
.u
.derived
->name
))
5143 type
= gfc_typenode_for_spec (&fsym
->ts
);
5144 var
= gfc_create_var (type
, fsym
->name
);
5145 gfc_conv_expr (&parmse
, e
);
5146 if (fsym
->attr
.optional
5147 && e
->expr_type
== EXPR_VARIABLE
5148 && e
->symtree
->n
.sym
->attr
.optional
)
5152 tmp
= gfc_build_addr_expr (NULL_TREE
, parmse
.expr
);
5153 cond
= fold_build2_loc (input_location
, NE_EXPR
,
5154 boolean_type_node
, tmp
,
5155 fold_convert (TREE_TYPE (tmp
),
5156 null_pointer_node
));
5157 gfc_start_block (&block
);
5158 gfc_add_modify (&block
, var
,
5159 fold_build1_loc (input_location
,
5161 type
, parmse
.expr
));
5162 gfc_add_expr_to_block (&parmse
.pre
,
5163 fold_build3_loc (input_location
,
5164 COND_EXPR
, void_type_node
,
5165 cond
, gfc_finish_block (&block
),
5166 build_empty_stmt (input_location
)));
5167 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
, var
);
5168 parmse
.expr
= build3_loc (input_location
, COND_EXPR
,
5169 TREE_TYPE (parmse
.expr
),
5171 fold_convert (TREE_TYPE (parmse
.expr
),
5172 null_pointer_node
));
5176 gfc_add_modify (&parmse
.pre
, var
,
5177 fold_build1_loc (input_location
,
5179 type
, parmse
.expr
));
5180 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
, var
);
5184 gfc_conv_expr_reference (&parmse
, e
);
5186 /* Catch base objects that are not variables. */
5187 if (e
->ts
.type
== BT_CLASS
5188 && e
->expr_type
!= EXPR_VARIABLE
5189 && expr
&& e
== expr
->base_expr
)
5190 base_object
= build_fold_indirect_ref_loc (input_location
,
5193 /* A class array element needs converting back to be a
5194 class object, if the formal argument is a class object. */
5195 if (fsym
&& fsym
->ts
.type
== BT_CLASS
5196 && e
->ts
.type
== BT_CLASS
5197 && ((CLASS_DATA (fsym
)->as
5198 && CLASS_DATA (fsym
)->as
->type
== AS_ASSUMED_RANK
)
5199 || CLASS_DATA (e
)->attr
.dimension
))
5200 gfc_conv_class_to_class (&parmse
, e
, fsym
->ts
, false,
5201 fsym
->attr
.intent
!= INTENT_IN
5202 && (CLASS_DATA (fsym
)->attr
.class_pointer
5203 || CLASS_DATA (fsym
)->attr
.allocatable
),
5205 && e
->expr_type
== EXPR_VARIABLE
5206 && e
->symtree
->n
.sym
->attr
.optional
,
5207 CLASS_DATA (fsym
)->attr
.class_pointer
5208 || CLASS_DATA (fsym
)->attr
.allocatable
);
5210 /* If an ALLOCATABLE dummy argument has INTENT(OUT) and is
5211 allocated on entry, it must be deallocated. */
5212 if (fsym
&& fsym
->attr
.intent
== INTENT_OUT
5213 && (fsym
->attr
.allocatable
5214 || (fsym
->ts
.type
== BT_CLASS
5215 && CLASS_DATA (fsym
)->attr
.allocatable
)))
5220 gfc_init_block (&block
);
5222 if (e
->ts
.type
== BT_CLASS
)
5223 ptr
= gfc_class_data_get (ptr
);
5225 tmp
= gfc_deallocate_scalar_with_status (ptr
, NULL_TREE
,
5228 gfc_add_expr_to_block (&block
, tmp
);
5229 tmp
= fold_build2_loc (input_location
, MODIFY_EXPR
,
5230 void_type_node
, ptr
,
5232 gfc_add_expr_to_block (&block
, tmp
);
5234 if (fsym
->ts
.type
== BT_CLASS
&& UNLIMITED_POLY (fsym
))
5236 gfc_add_modify (&block
, ptr
,
5237 fold_convert (TREE_TYPE (ptr
),
5238 null_pointer_node
));
5239 gfc_add_expr_to_block (&block
, tmp
);
5241 else if (fsym
->ts
.type
== BT_CLASS
)
5244 vtab
= gfc_find_derived_vtab (fsym
->ts
.u
.derived
);
5245 tmp
= gfc_get_symbol_decl (vtab
);
5246 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
5247 ptr
= gfc_class_vptr_get (parmse
.expr
);
5248 gfc_add_modify (&block
, ptr
,
5249 fold_convert (TREE_TYPE (ptr
), tmp
));
5250 gfc_add_expr_to_block (&block
, tmp
);
5253 if (fsym
->attr
.optional
5254 && e
->expr_type
== EXPR_VARIABLE
5255 && e
->symtree
->n
.sym
->attr
.optional
)
5257 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
5259 gfc_conv_expr_present (e
->symtree
->n
.sym
),
5260 gfc_finish_block (&block
),
5261 build_empty_stmt (input_location
));
5264 tmp
= gfc_finish_block (&block
);
5266 gfc_add_expr_to_block (&se
->pre
, tmp
);
5269 if (fsym
&& (fsym
->ts
.type
== BT_DERIVED
5270 || fsym
->ts
.type
== BT_ASSUMED
)
5271 && e
->ts
.type
== BT_CLASS
5272 && !CLASS_DATA (e
)->attr
.dimension
5273 && !CLASS_DATA (e
)->attr
.codimension
)
5274 parmse
.expr
= gfc_class_data_get (parmse
.expr
);
5276 /* Wrap scalar variable in a descriptor. We need to convert
5277 the address of a pointer back to the pointer itself before,
5278 we can assign it to the data field. */
5280 if (fsym
&& fsym
->as
&& fsym
->as
->type
== AS_ASSUMED_RANK
5281 && fsym
->ts
.type
!= BT_CLASS
&& e
->expr_type
!= EXPR_NULL
)
5284 if (TREE_CODE (tmp
) == ADDR_EXPR
5285 && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (tmp
, 0))))
5286 tmp
= TREE_OPERAND (tmp
, 0);
5287 parmse
.expr
= gfc_conv_scalar_to_descriptor (&parmse
, tmp
,
5289 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
,
5292 else if (fsym
&& e
->expr_type
!= EXPR_NULL
5293 && ((fsym
->attr
.pointer
5294 && fsym
->attr
.flavor
!= FL_PROCEDURE
)
5295 || (fsym
->attr
.proc_pointer
5296 && !(e
->expr_type
== EXPR_VARIABLE
5297 && e
->symtree
->n
.sym
->attr
.dummy
))
5298 || (fsym
->attr
.proc_pointer
5299 && e
->expr_type
== EXPR_VARIABLE
5300 && gfc_is_proc_ptr_comp (e
))
5301 || (fsym
->attr
.allocatable
5302 && fsym
->attr
.flavor
!= FL_PROCEDURE
)))
5304 /* Scalar pointer dummy args require an extra level of
5305 indirection. The null pointer already contains
5306 this level of indirection. */
5307 parm_kind
= SCALAR_POINTER
;
5308 parmse
.expr
= gfc_build_addr_expr (NULL_TREE
, parmse
.expr
);
5312 else if (e
->ts
.type
== BT_CLASS
5313 && fsym
&& fsym
->ts
.type
== BT_CLASS
5314 && (CLASS_DATA (fsym
)->attr
.dimension
5315 || CLASS_DATA (fsym
)->attr
.codimension
))
5317 /* Pass a class array. */
5318 parmse
.use_offset
= 1;
5319 gfc_conv_expr_descriptor (&parmse
, e
);
5321 /* If an ALLOCATABLE dummy argument has INTENT(OUT) and is
5322 allocated on entry, it must be deallocated. */
5323 if (fsym
->attr
.intent
== INTENT_OUT
5324 && CLASS_DATA (fsym
)->attr
.allocatable
)
5329 gfc_init_block (&block
);
5331 ptr
= gfc_class_data_get (ptr
);
5333 tmp
= gfc_deallocate_with_status (ptr
, NULL_TREE
,
5334 NULL_TREE
, NULL_TREE
,
5336 GFC_CAF_COARRAY_NOCOARRAY
);
5337 gfc_add_expr_to_block (&block
, tmp
);
5338 tmp
= fold_build2_loc (input_location
, MODIFY_EXPR
,
5339 void_type_node
, ptr
,
5341 gfc_add_expr_to_block (&block
, tmp
);
5342 gfc_reset_vptr (&block
, e
);
5344 if (fsym
->attr
.optional
5345 && e
->expr_type
== EXPR_VARIABLE
5347 || (e
->ref
->type
== REF_ARRAY
5348 && e
->ref
->u
.ar
.type
!= AR_FULL
))
5349 && e
->symtree
->n
.sym
->attr
.optional
)
5351 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
5353 gfc_conv_expr_present (e
->symtree
->n
.sym
),
5354 gfc_finish_block (&block
),
5355 build_empty_stmt (input_location
));
5358 tmp
= gfc_finish_block (&block
);
5360 gfc_add_expr_to_block (&se
->pre
, tmp
);
5363 /* The conversion does not repackage the reference to a class
5364 array - _data descriptor. */
5365 gfc_conv_class_to_class (&parmse
, e
, fsym
->ts
, false,
5366 fsym
->attr
.intent
!= INTENT_IN
5367 && (CLASS_DATA (fsym
)->attr
.class_pointer
5368 || CLASS_DATA (fsym
)->attr
.allocatable
),
5370 && e
->expr_type
== EXPR_VARIABLE
5371 && e
->symtree
->n
.sym
->attr
.optional
,
5372 CLASS_DATA (fsym
)->attr
.class_pointer
5373 || CLASS_DATA (fsym
)->attr
.allocatable
);
5377 /* If the argument is a function call that may not create
5378 a temporary for the result, we have to check that we
5379 can do it, i.e. that there is no alias between this
5380 argument and another one. */
5381 if (gfc_get_noncopying_intrinsic_argument (e
) != NULL
)
5387 intent
= fsym
->attr
.intent
;
5389 intent
= INTENT_UNKNOWN
;
5391 if (gfc_check_fncall_dependency (e
, intent
, sym
, args
,
5393 parmse
.force_tmp
= 1;
5395 iarg
= e
->value
.function
.actual
->expr
;
5397 /* Temporary needed if aliasing due to host association. */
5398 if (sym
->attr
.contained
5400 && !sym
->attr
.implicit_pure
5401 && !sym
->attr
.use_assoc
5402 && iarg
->expr_type
== EXPR_VARIABLE
5403 && sym
->ns
== iarg
->symtree
->n
.sym
->ns
)
5404 parmse
.force_tmp
= 1;
5406 /* Ditto within module. */
5407 if (sym
->attr
.use_assoc
5409 && !sym
->attr
.implicit_pure
5410 && iarg
->expr_type
== EXPR_VARIABLE
5411 && sym
->module
== iarg
->symtree
->n
.sym
->module
)
5412 parmse
.force_tmp
= 1;
5415 if (e
->expr_type
== EXPR_VARIABLE
5416 && is_subref_array (e
)
5417 && !(fsym
&& fsym
->attr
.pointer
))
5418 /* The actual argument is a component reference to an
5419 array of derived types. In this case, the argument
5420 is converted to a temporary, which is passed and then
5421 written back after the procedure call. */
5422 gfc_conv_subref_array_arg (&parmse
, e
, nodesc_arg
,
5423 fsym
? fsym
->attr
.intent
: INTENT_INOUT
,
5424 fsym
&& fsym
->attr
.pointer
);
5425 else if (gfc_is_class_array_ref (e
, NULL
)
5426 && fsym
&& fsym
->ts
.type
== BT_DERIVED
)
5427 /* The actual argument is a component reference to an
5428 array of derived types. In this case, the argument
5429 is converted to a temporary, which is passed and then
5430 written back after the procedure call.
5431 OOP-TODO: Insert code so that if the dynamic type is
5432 the same as the declared type, copy-in/copy-out does
5434 gfc_conv_subref_array_arg (&parmse
, e
, nodesc_arg
,
5435 fsym
? fsym
->attr
.intent
: INTENT_INOUT
,
5436 fsym
&& fsym
->attr
.pointer
);
5438 else if (gfc_is_alloc_class_array_function (e
)
5439 && fsym
&& fsym
->ts
.type
== BT_DERIVED
)
5440 /* See previous comment. For function actual argument,
5441 the write out is not needed so the intent is set as
5444 e
->must_finalize
= 1;
5445 gfc_conv_subref_array_arg (&parmse
, e
, nodesc_arg
,
5447 fsym
&& fsym
->attr
.pointer
);
5450 gfc_conv_array_parameter (&parmse
, e
, nodesc_arg
, fsym
,
5453 /* If an ALLOCATABLE dummy argument has INTENT(OUT) and is
5454 allocated on entry, it must be deallocated. */
5455 if (fsym
&& fsym
->attr
.allocatable
5456 && fsym
->attr
.intent
== INTENT_OUT
)
5458 if (fsym
->ts
.type
== BT_DERIVED
5459 && fsym
->ts
.u
.derived
->attr
.alloc_comp
)
5461 // deallocate the components first
5462 tmp
= gfc_deallocate_alloc_comp (fsym
->ts
.u
.derived
,
5463 parmse
.expr
, e
->rank
);
5464 if (tmp
!= NULL_TREE
)
5465 gfc_add_expr_to_block (&se
->pre
, tmp
);
5468 tmp
= build_fold_indirect_ref_loc (input_location
,
5470 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp
)))
5471 tmp
= gfc_conv_descriptor_data_get (tmp
);
5472 tmp
= gfc_deallocate_with_status (tmp
, NULL_TREE
, NULL_TREE
,
5473 NULL_TREE
, NULL_TREE
, true,
5475 GFC_CAF_COARRAY_NOCOARRAY
);
5476 if (fsym
->attr
.optional
5477 && e
->expr_type
== EXPR_VARIABLE
5478 && e
->symtree
->n
.sym
->attr
.optional
)
5479 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
5481 gfc_conv_expr_present (e
->symtree
->n
.sym
),
5482 tmp
, build_empty_stmt (input_location
));
5483 gfc_add_expr_to_block (&se
->pre
, tmp
);
5488 /* The case with fsym->attr.optional is that of a user subroutine
5489 with an interface indicating an optional argument. When we call
5490 an intrinsic subroutine, however, fsym is NULL, but we might still
5491 have an optional argument, so we proceed to the substitution
5493 if (e
&& (fsym
== NULL
|| fsym
->attr
.optional
))
5495 /* If an optional argument is itself an optional dummy argument,
5496 check its presence and substitute a null if absent. This is
5497 only needed when passing an array to an elemental procedure
5498 as then array elements are accessed - or no NULL pointer is
5499 allowed and a "1" or "0" should be passed if not present.
5500 When passing a non-array-descriptor full array to a
5501 non-array-descriptor dummy, no check is needed. For
5502 array-descriptor actual to array-descriptor dummy, see
5503 PR 41911 for why a check has to be inserted.
5504 fsym == NULL is checked as intrinsics required the descriptor
5505 but do not always set fsym. */
5506 if (e
->expr_type
== EXPR_VARIABLE
5507 && e
->symtree
->n
.sym
->attr
.optional
5508 && ((e
->rank
!= 0 && elemental_proc
)
5509 || e
->representation
.length
|| e
->ts
.type
== BT_CHARACTER
5513 && (fsym
->as
->type
== AS_ASSUMED_SHAPE
5514 || fsym
->as
->type
== AS_ASSUMED_RANK
5515 || fsym
->as
->type
== AS_DEFERRED
))))))
5516 gfc_conv_missing_dummy (&parmse
, e
, fsym
? fsym
->ts
: e
->ts
,
5517 e
->representation
.length
);
5522 /* Obtain the character length of an assumed character length
5523 length procedure from the typespec. */
5524 if (fsym
->ts
.type
== BT_CHARACTER
5525 && parmse
.string_length
== NULL_TREE
5526 && e
->ts
.type
== BT_PROCEDURE
5527 && e
->symtree
->n
.sym
->ts
.type
== BT_CHARACTER
5528 && e
->symtree
->n
.sym
->ts
.u
.cl
->length
!= NULL
5529 && e
->symtree
->n
.sym
->ts
.u
.cl
->length
->expr_type
== EXPR_CONSTANT
)
5531 gfc_conv_const_charlen (e
->symtree
->n
.sym
->ts
.u
.cl
);
5532 parmse
.string_length
= e
->symtree
->n
.sym
->ts
.u
.cl
->backend_decl
;
5536 if (fsym
&& need_interface_mapping
&& e
)
5537 gfc_add_interface_mapping (&mapping
, fsym
, &parmse
, e
);
5539 gfc_add_block_to_block (&se
->pre
, &parmse
.pre
);
5540 gfc_add_block_to_block (&post
, &parmse
.post
);
5542 /* Allocated allocatable components of derived types must be
5543 deallocated for non-variable scalars, array arguments to elemental
5544 procedures, and array arguments with descriptor to non-elemental
5545 procedures. As bounds information for descriptorless arrays is no
5546 longer available here, they are dealt with in trans-array.c
5547 (gfc_conv_array_parameter). */
5548 if (e
&& (e
->ts
.type
== BT_DERIVED
|| e
->ts
.type
== BT_CLASS
)
5549 && e
->ts
.u
.derived
->attr
.alloc_comp
5550 && (e
->rank
== 0 || elemental_proc
|| !nodesc_arg
)
5551 && !expr_may_alias_variables (e
, elemental_proc
))
5554 /* It is known the e returns a structure type with at least one
5555 allocatable component. When e is a function, ensure that the
5556 function is called once only by using a temporary variable. */
5557 if (!DECL_P (parmse
.expr
))
5558 parmse
.expr
= gfc_evaluate_now_loc (input_location
,
5559 parmse
.expr
, &se
->pre
);
5561 if (fsym
&& fsym
->attr
.value
)
5564 tmp
= build_fold_indirect_ref_loc (input_location
,
5567 parm_rank
= e
->rank
;
5575 case (SCALAR_POINTER
):
5576 tmp
= build_fold_indirect_ref_loc (input_location
,
5581 if (e
->expr_type
== EXPR_OP
5582 && e
->value
.op
.op
== INTRINSIC_PARENTHESES
5583 && e
->value
.op
.op1
->expr_type
== EXPR_VARIABLE
)
5586 local_tmp
= gfc_evaluate_now (tmp
, &se
->pre
);
5587 local_tmp
= gfc_copy_alloc_comp (e
->ts
.u
.derived
, local_tmp
, tmp
,
5589 gfc_add_expr_to_block (&se
->post
, local_tmp
);
5592 if (e
->ts
.type
== BT_DERIVED
&& fsym
&& fsym
->ts
.type
== BT_CLASS
)
5594 /* The derived type is passed to gfc_deallocate_alloc_comp.
5595 Therefore, class actuals can handled correctly but derived
5596 types passed to class formals need the _data component. */
5597 tmp
= gfc_class_data_get (tmp
);
5598 if (!CLASS_DATA (fsym
)->attr
.dimension
)
5599 tmp
= build_fold_indirect_ref_loc (input_location
, tmp
);
5602 tmp
= gfc_deallocate_alloc_comp (e
->ts
.u
.derived
, tmp
, parm_rank
);
5604 gfc_prepend_expr_to_block (&post
, tmp
);
5607 /* Add argument checking of passing an unallocated/NULL actual to
5608 a nonallocatable/nonpointer dummy. */
5610 if (gfc_option
.rtcheck
& GFC_RTCHECK_POINTER
&& e
!= NULL
)
5612 symbol_attribute attr
;
5616 if (e
->expr_type
== EXPR_VARIABLE
|| e
->expr_type
== EXPR_FUNCTION
)
5617 attr
= gfc_expr_attr (e
);
5619 goto end_pointer_check
;
5621 /* In Fortran 2008 it's allowed to pass a NULL pointer/nonallocated
5622 allocatable to an optional dummy, cf. 12.5.2.12. */
5623 if (fsym
!= NULL
&& fsym
->attr
.optional
&& !attr
.proc_pointer
5624 && (gfc_option
.allow_std
& GFC_STD_F2008
) != 0)
5625 goto end_pointer_check
;
5629 /* If the actual argument is an optional pointer/allocatable and
5630 the formal argument takes an nonpointer optional value,
5631 it is invalid to pass a non-present argument on, even
5632 though there is no technical reason for this in gfortran.
5633 See Fortran 2003, Section 12.4.1.6 item (7)+(8). */
5634 tree present
, null_ptr
, type
;
5636 if (attr
.allocatable
5637 && (fsym
== NULL
|| !fsym
->attr
.allocatable
))
5638 msg
= xasprintf ("Allocatable actual argument '%s' is not "
5639 "allocated or not present",
5640 e
->symtree
->n
.sym
->name
);
5641 else if (attr
.pointer
5642 && (fsym
== NULL
|| !fsym
->attr
.pointer
))
5643 msg
= xasprintf ("Pointer actual argument '%s' is not "
5644 "associated or not present",
5645 e
->symtree
->n
.sym
->name
);
5646 else if (attr
.proc_pointer
5647 && (fsym
== NULL
|| !fsym
->attr
.proc_pointer
))
5648 msg
= xasprintf ("Proc-pointer actual argument '%s' is not "
5649 "associated or not present",
5650 e
->symtree
->n
.sym
->name
);
5652 goto end_pointer_check
;
5654 present
= gfc_conv_expr_present (e
->symtree
->n
.sym
);
5655 type
= TREE_TYPE (present
);
5656 present
= fold_build2_loc (input_location
, EQ_EXPR
,
5657 boolean_type_node
, present
,
5659 null_pointer_node
));
5660 type
= TREE_TYPE (parmse
.expr
);
5661 null_ptr
= fold_build2_loc (input_location
, EQ_EXPR
,
5662 boolean_type_node
, parmse
.expr
,
5664 null_pointer_node
));
5665 cond
= fold_build2_loc (input_location
, TRUTH_ORIF_EXPR
,
5666 boolean_type_node
, present
, null_ptr
);
5670 if (attr
.allocatable
5671 && (fsym
== NULL
|| !fsym
->attr
.allocatable
))
5672 msg
= xasprintf ("Allocatable actual argument '%s' is not "
5673 "allocated", e
->symtree
->n
.sym
->name
);
5674 else if (attr
.pointer
5675 && (fsym
== NULL
|| !fsym
->attr
.pointer
))
5676 msg
= xasprintf ("Pointer actual argument '%s' is not "
5677 "associated", e
->symtree
->n
.sym
->name
);
5678 else if (attr
.proc_pointer
5679 && (fsym
== NULL
|| !fsym
->attr
.proc_pointer
))
5680 msg
= xasprintf ("Proc-pointer actual argument '%s' is not "
5681 "associated", e
->symtree
->n
.sym
->name
);
5683 goto end_pointer_check
;
5687 /* If the argument is passed by value, we need to strip the
5689 if (!POINTER_TYPE_P (TREE_TYPE (parmse
.expr
)))
5690 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
5692 cond
= fold_build2_loc (input_location
, EQ_EXPR
,
5693 boolean_type_node
, tmp
,
5694 fold_convert (TREE_TYPE (tmp
),
5695 null_pointer_node
));
5698 gfc_trans_runtime_check (true, false, cond
, &se
->pre
, &e
->where
,
5704 /* Deferred length dummies pass the character length by reference
5705 so that the value can be returned. */
5706 if (parmse
.string_length
&& fsym
&& fsym
->ts
.deferred
)
5708 if (INDIRECT_REF_P (parmse
.string_length
))
5709 /* In chains of functions/procedure calls the string_length already
5710 is a pointer to the variable holding the length. Therefore
5711 remove the deref on call. */
5712 parmse
.string_length
= TREE_OPERAND (parmse
.string_length
, 0);
5715 tmp
= parmse
.string_length
;
5716 if (!VAR_P (tmp
) && TREE_CODE (tmp
) != COMPONENT_REF
)
5717 tmp
= gfc_evaluate_now (parmse
.string_length
, &se
->pre
);
5718 parmse
.string_length
= gfc_build_addr_expr (NULL_TREE
, tmp
);
5722 /* Character strings are passed as two parameters, a length and a
5723 pointer - except for Bind(c) which only passes the pointer.
5724 An unlimited polymorphic formal argument likewise does not
5726 if (parmse
.string_length
!= NULL_TREE
5727 && !sym
->attr
.is_bind_c
5728 && !(fsym
&& UNLIMITED_POLY (fsym
)))
5729 vec_safe_push (stringargs
, parmse
.string_length
);
5731 /* When calling __copy for character expressions to unlimited
5732 polymorphic entities, the dst argument needs a string length. */
5733 if (sym
->name
[0] == '_' && e
&& e
->ts
.type
== BT_CHARACTER
5734 && strncmp (sym
->name
, "__vtab_CHARACTER", 16) == 0
5735 && arg
->next
&& arg
->next
->expr
5736 && (arg
->next
->expr
->ts
.type
== BT_DERIVED
5737 || arg
->next
->expr
->ts
.type
== BT_CLASS
)
5738 && arg
->next
->expr
->ts
.u
.derived
->attr
.unlimited_polymorphic
)
5739 vec_safe_push (stringargs
, parmse
.string_length
);
5741 /* For descriptorless coarrays and assumed-shape coarray dummies, we
5742 pass the token and the offset as additional arguments. */
5743 if (fsym
&& e
== NULL
&& flag_coarray
== GFC_FCOARRAY_LIB
5744 && ((fsym
->ts
.type
!= BT_CLASS
&& fsym
->attr
.codimension
5745 && !fsym
->attr
.allocatable
)
5746 || (fsym
->ts
.type
== BT_CLASS
5747 && CLASS_DATA (fsym
)->attr
.codimension
5748 && !CLASS_DATA (fsym
)->attr
.allocatable
)))
5750 /* Token and offset. */
5751 vec_safe_push (stringargs
, null_pointer_node
);
5752 vec_safe_push (stringargs
, build_int_cst (gfc_array_index_type
, 0));
5753 gcc_assert (fsym
->attr
.optional
);
5755 else if (fsym
&& flag_coarray
== GFC_FCOARRAY_LIB
5756 && ((fsym
->ts
.type
!= BT_CLASS
&& fsym
->attr
.codimension
5757 && !fsym
->attr
.allocatable
)
5758 || (fsym
->ts
.type
== BT_CLASS
5759 && CLASS_DATA (fsym
)->attr
.codimension
5760 && !CLASS_DATA (fsym
)->attr
.allocatable
)))
5762 tree caf_decl
, caf_type
;
5765 caf_decl
= gfc_get_tree_for_caf_expr (e
);
5766 caf_type
= TREE_TYPE (caf_decl
);
5768 if (GFC_DESCRIPTOR_TYPE_P (caf_type
)
5769 && (GFC_TYPE_ARRAY_AKIND (caf_type
) == GFC_ARRAY_ALLOCATABLE
5770 || GFC_TYPE_ARRAY_AKIND (caf_type
) == GFC_ARRAY_POINTER
))
5771 tmp
= gfc_conv_descriptor_token (caf_decl
);
5772 else if (DECL_LANG_SPECIFIC (caf_decl
)
5773 && GFC_DECL_TOKEN (caf_decl
) != NULL_TREE
)
5774 tmp
= GFC_DECL_TOKEN (caf_decl
);
5777 gcc_assert (GFC_ARRAY_TYPE_P (caf_type
)
5778 && GFC_TYPE_ARRAY_CAF_TOKEN (caf_type
) != NULL_TREE
);
5779 tmp
= GFC_TYPE_ARRAY_CAF_TOKEN (caf_type
);
5782 vec_safe_push (stringargs
, tmp
);
5784 if (GFC_DESCRIPTOR_TYPE_P (caf_type
)
5785 && GFC_TYPE_ARRAY_AKIND (caf_type
) == GFC_ARRAY_ALLOCATABLE
)
5786 offset
= build_int_cst (gfc_array_index_type
, 0);
5787 else if (DECL_LANG_SPECIFIC (caf_decl
)
5788 && GFC_DECL_CAF_OFFSET (caf_decl
) != NULL_TREE
)
5789 offset
= GFC_DECL_CAF_OFFSET (caf_decl
);
5790 else if (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type
) != NULL_TREE
)
5791 offset
= GFC_TYPE_ARRAY_CAF_OFFSET (caf_type
);
5793 offset
= build_int_cst (gfc_array_index_type
, 0);
5795 if (GFC_DESCRIPTOR_TYPE_P (caf_type
))
5796 tmp
= gfc_conv_descriptor_data_get (caf_decl
);
5799 gcc_assert (POINTER_TYPE_P (caf_type
));
5803 tmp2
= fsym
->ts
.type
== BT_CLASS
5804 ? gfc_class_data_get (parmse
.expr
) : parmse
.expr
;
5805 if ((fsym
->ts
.type
!= BT_CLASS
5806 && (fsym
->as
->type
== AS_ASSUMED_SHAPE
5807 || fsym
->as
->type
== AS_ASSUMED_RANK
))
5808 || (fsym
->ts
.type
== BT_CLASS
5809 && (CLASS_DATA (fsym
)->as
->type
== AS_ASSUMED_SHAPE
5810 || CLASS_DATA (fsym
)->as
->type
== AS_ASSUMED_RANK
)))
5812 if (fsym
->ts
.type
== BT_CLASS
)
5813 gcc_assert (!POINTER_TYPE_P (TREE_TYPE (tmp2
)));
5816 gcc_assert (POINTER_TYPE_P (TREE_TYPE (tmp2
)));
5817 tmp2
= build_fold_indirect_ref_loc (input_location
, tmp2
);
5819 gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp2
)));
5820 tmp2
= gfc_conv_descriptor_data_get (tmp2
);
5822 else if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp2
)))
5823 tmp2
= gfc_conv_descriptor_data_get (tmp2
);
5826 gcc_assert (POINTER_TYPE_P (TREE_TYPE (tmp2
)));
5829 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
5830 gfc_array_index_type
,
5831 fold_convert (gfc_array_index_type
, tmp2
),
5832 fold_convert (gfc_array_index_type
, tmp
));
5833 offset
= fold_build2_loc (input_location
, PLUS_EXPR
,
5834 gfc_array_index_type
, offset
, tmp
);
5836 vec_safe_push (stringargs
, offset
);
5839 vec_safe_push (arglist
, parmse
.expr
);
5841 gfc_finish_interface_mapping (&mapping
, &se
->pre
, &se
->post
);
5845 else if (sym
->ts
.type
== BT_CLASS
)
5846 ts
= CLASS_DATA (sym
)->ts
;
5850 if (ts
.type
== BT_CHARACTER
&& sym
->attr
.is_bind_c
)
5851 se
->string_length
= build_int_cst (gfc_charlen_type_node
, 1);
5852 else if (ts
.type
== BT_CHARACTER
)
5854 if (ts
.u
.cl
->length
== NULL
)
5856 /* Assumed character length results are not allowed by 5.1.1.5 of the
5857 standard and are trapped in resolve.c; except in the case of SPREAD
5858 (and other intrinsics?) and dummy functions. In the case of SPREAD,
5859 we take the character length of the first argument for the result.
5860 For dummies, we have to look through the formal argument list for
5861 this function and use the character length found there.*/
5863 cl
.backend_decl
= gfc_create_var (gfc_charlen_type_node
, "slen");
5864 else if (!sym
->attr
.dummy
)
5865 cl
.backend_decl
= (*stringargs
)[0];
5868 formal
= gfc_sym_get_dummy_args (sym
->ns
->proc_name
);
5869 for (; formal
; formal
= formal
->next
)
5870 if (strcmp (formal
->sym
->name
, sym
->name
) == 0)
5871 cl
.backend_decl
= formal
->sym
->ts
.u
.cl
->backend_decl
;
5873 len
= cl
.backend_decl
;
5879 /* Calculate the length of the returned string. */
5880 gfc_init_se (&parmse
, NULL
);
5881 if (need_interface_mapping
)
5882 gfc_apply_interface_mapping (&mapping
, &parmse
, ts
.u
.cl
->length
);
5884 gfc_conv_expr (&parmse
, ts
.u
.cl
->length
);
5885 gfc_add_block_to_block (&se
->pre
, &parmse
.pre
);
5886 gfc_add_block_to_block (&se
->post
, &parmse
.post
);
5888 tmp
= fold_convert (gfc_charlen_type_node
, parmse
.expr
);
5889 tmp
= fold_build2_loc (input_location
, MAX_EXPR
,
5890 gfc_charlen_type_node
, tmp
,
5891 build_int_cst (gfc_charlen_type_node
, 0));
5892 cl
.backend_decl
= tmp
;
5895 /* Set up a charlen structure for it. */
5900 len
= cl
.backend_decl
;
5903 byref
= (comp
&& (comp
->attr
.dimension
5904 || (comp
->ts
.type
== BT_CHARACTER
&& !sym
->attr
.is_bind_c
)))
5905 || (!comp
&& gfc_return_by_reference (sym
));
5908 if (se
->direct_byref
)
5910 /* Sometimes, too much indirection can be applied; e.g. for
5911 function_result = array_valued_recursive_function. */
5912 if (TREE_TYPE (TREE_TYPE (se
->expr
))
5913 && TREE_TYPE (TREE_TYPE (TREE_TYPE (se
->expr
)))
5914 && GFC_DESCRIPTOR_TYPE_P
5915 (TREE_TYPE (TREE_TYPE (TREE_TYPE (se
->expr
)))))
5916 se
->expr
= build_fold_indirect_ref_loc (input_location
,
5919 /* If the lhs of an assignment x = f(..) is allocatable and
5920 f2003 is allowed, we must do the automatic reallocation.
5921 TODO - deal with intrinsics, without using a temporary. */
5922 if (flag_realloc_lhs
5923 && se
->ss
&& se
->ss
->loop_chain
5924 && se
->ss
->loop_chain
->is_alloc_lhs
5925 && !expr
->value
.function
.isym
5926 && sym
->result
->as
!= NULL
)
5928 /* Evaluate the bounds of the result, if known. */
5929 gfc_set_loop_bounds_from_array_spec (&mapping
, se
,
5932 /* Perform the automatic reallocation. */
5933 tmp
= gfc_alloc_allocatable_for_assignment (se
->loop
,
5935 gfc_add_expr_to_block (&se
->pre
, tmp
);
5937 /* Pass the temporary as the first argument. */
5938 result
= info
->descriptor
;
5941 result
= build_fold_indirect_ref_loc (input_location
,
5943 vec_safe_push (retargs
, se
->expr
);
5945 else if (comp
&& comp
->attr
.dimension
)
5947 gcc_assert (se
->loop
&& info
);
5949 /* Set the type of the array. */
5950 tmp
= gfc_typenode_for_spec (&comp
->ts
);
5951 gcc_assert (se
->ss
->dimen
== se
->loop
->dimen
);
5953 /* Evaluate the bounds of the result, if known. */
5954 gfc_set_loop_bounds_from_array_spec (&mapping
, se
, comp
->as
);
5956 /* If the lhs of an assignment x = f(..) is allocatable and
5957 f2003 is allowed, we must not generate the function call
5958 here but should just send back the results of the mapping.
5959 This is signalled by the function ss being flagged. */
5960 if (flag_realloc_lhs
&& se
->ss
&& se
->ss
->is_alloc_lhs
)
5962 gfc_free_interface_mapping (&mapping
);
5963 return has_alternate_specifier
;
5966 /* Create a temporary to store the result. In case the function
5967 returns a pointer, the temporary will be a shallow copy and
5968 mustn't be deallocated. */
5969 callee_alloc
= comp
->attr
.allocatable
|| comp
->attr
.pointer
;
5970 gfc_trans_create_temp_array (&se
->pre
, &se
->post
, se
->ss
,
5971 tmp
, NULL_TREE
, false,
5972 !comp
->attr
.pointer
, callee_alloc
,
5973 &se
->ss
->info
->expr
->where
);
5975 /* Pass the temporary as the first argument. */
5976 result
= info
->descriptor
;
5977 tmp
= gfc_build_addr_expr (NULL_TREE
, result
);
5978 vec_safe_push (retargs
, tmp
);
5980 else if (!comp
&& sym
->result
->attr
.dimension
)
5982 gcc_assert (se
->loop
&& info
);
5984 /* Set the type of the array. */
5985 tmp
= gfc_typenode_for_spec (&ts
);
5986 gcc_assert (se
->ss
->dimen
== se
->loop
->dimen
);
5988 /* Evaluate the bounds of the result, if known. */
5989 gfc_set_loop_bounds_from_array_spec (&mapping
, se
, sym
->result
->as
);
5991 /* If the lhs of an assignment x = f(..) is allocatable and
5992 f2003 is allowed, we must not generate the function call
5993 here but should just send back the results of the mapping.
5994 This is signalled by the function ss being flagged. */
5995 if (flag_realloc_lhs
&& se
->ss
&& se
->ss
->is_alloc_lhs
)
5997 gfc_free_interface_mapping (&mapping
);
5998 return has_alternate_specifier
;
6001 /* Create a temporary to store the result. In case the function
6002 returns a pointer, the temporary will be a shallow copy and
6003 mustn't be deallocated. */
6004 callee_alloc
= sym
->attr
.allocatable
|| sym
->attr
.pointer
;
6005 gfc_trans_create_temp_array (&se
->pre
, &se
->post
, se
->ss
,
6006 tmp
, NULL_TREE
, false,
6007 !sym
->attr
.pointer
, callee_alloc
,
6008 &se
->ss
->info
->expr
->where
);
6010 /* Pass the temporary as the first argument. */
6011 result
= info
->descriptor
;
6012 tmp
= gfc_build_addr_expr (NULL_TREE
, result
);
6013 vec_safe_push (retargs
, tmp
);
6015 else if (ts
.type
== BT_CHARACTER
)
6017 /* Pass the string length. */
6018 type
= gfc_get_character_type (ts
.kind
, ts
.u
.cl
);
6019 type
= build_pointer_type (type
);
6021 /* Emit a DECL_EXPR for the VLA type. */
6022 tmp
= TREE_TYPE (type
);
6024 && TREE_CODE (TYPE_SIZE (tmp
)) != INTEGER_CST
)
6026 tmp
= build_decl (input_location
, TYPE_DECL
, NULL_TREE
, tmp
);
6027 DECL_ARTIFICIAL (tmp
) = 1;
6028 DECL_IGNORED_P (tmp
) = 1;
6029 tmp
= fold_build1_loc (input_location
, DECL_EXPR
,
6030 TREE_TYPE (tmp
), tmp
);
6031 gfc_add_expr_to_block (&se
->pre
, tmp
);
6034 /* Return an address to a char[0:len-1]* temporary for
6035 character pointers. */
6036 if ((!comp
&& (sym
->attr
.pointer
|| sym
->attr
.allocatable
))
6037 || (comp
&& (comp
->attr
.pointer
|| comp
->attr
.allocatable
)))
6039 var
= gfc_create_var (type
, "pstr");
6041 if ((!comp
&& sym
->attr
.allocatable
)
6042 || (comp
&& comp
->attr
.allocatable
))
6044 gfc_add_modify (&se
->pre
, var
,
6045 fold_convert (TREE_TYPE (var
),
6046 null_pointer_node
));
6047 tmp
= gfc_call_free (var
);
6048 gfc_add_expr_to_block (&se
->post
, tmp
);
6051 /* Provide an address expression for the function arguments. */
6052 var
= gfc_build_addr_expr (NULL_TREE
, var
);
6055 var
= gfc_conv_string_tmp (se
, type
, len
);
6057 vec_safe_push (retargs
, var
);
6061 gcc_assert (flag_f2c
&& ts
.type
== BT_COMPLEX
);
6063 type
= gfc_get_complex_type (ts
.kind
);
6064 var
= gfc_build_addr_expr (NULL_TREE
, gfc_create_var (type
, "cmplx"));
6065 vec_safe_push (retargs
, var
);
6068 /* Add the string length to the argument list. */
6069 if (ts
.type
== BT_CHARACTER
&& ts
.deferred
)
6073 tmp
= gfc_evaluate_now (len
, &se
->pre
);
6074 TREE_STATIC (tmp
) = 1;
6075 gfc_add_modify (&se
->pre
, tmp
,
6076 build_int_cst (TREE_TYPE (tmp
), 0));
6077 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
6078 vec_safe_push (retargs
, tmp
);
6080 else if (ts
.type
== BT_CHARACTER
)
6081 vec_safe_push (retargs
, len
);
6083 gfc_free_interface_mapping (&mapping
);
6085 /* We need to glom RETARGS + ARGLIST + STRINGARGS + APPEND_ARGS. */
6086 arglen
= (vec_safe_length (arglist
) + vec_safe_length (optionalargs
)
6087 + vec_safe_length (stringargs
) + vec_safe_length (append_args
));
6088 vec_safe_reserve (retargs
, arglen
);
6090 /* Add the return arguments. */
6091 vec_safe_splice (retargs
, arglist
);
6093 /* Add the hidden present status for optional+value to the arguments. */
6094 vec_safe_splice (retargs
, optionalargs
);
6096 /* Add the hidden string length parameters to the arguments. */
6097 vec_safe_splice (retargs
, stringargs
);
6099 /* We may want to append extra arguments here. This is used e.g. for
6100 calls to libgfortran_matmul_??, which need extra information. */
6101 vec_safe_splice (retargs
, append_args
);
6105 /* Generate the actual call. */
6106 if (base_object
== NULL_TREE
)
6107 conv_function_val (se
, sym
, expr
);
6109 conv_base_obj_fcn_val (se
, base_object
, expr
);
6111 /* If there are alternate return labels, function type should be
6112 integer. Can't modify the type in place though, since it can be shared
6113 with other functions. For dummy arguments, the typing is done to
6114 this result, even if it has to be repeated for each call. */
6115 if (has_alternate_specifier
6116 && TREE_TYPE (TREE_TYPE (TREE_TYPE (se
->expr
))) != integer_type_node
)
6118 if (!sym
->attr
.dummy
)
6120 TREE_TYPE (sym
->backend_decl
)
6121 = build_function_type (integer_type_node
,
6122 TYPE_ARG_TYPES (TREE_TYPE (sym
->backend_decl
)));
6123 se
->expr
= gfc_build_addr_expr (NULL_TREE
, sym
->backend_decl
);
6126 TREE_TYPE (TREE_TYPE (TREE_TYPE (se
->expr
))) = integer_type_node
;
6129 fntype
= TREE_TYPE (TREE_TYPE (se
->expr
));
6130 se
->expr
= build_call_vec (TREE_TYPE (fntype
), se
->expr
, arglist
);
6132 /* Allocatable scalar function results must be freed and nullified
6133 after use. This necessitates the creation of a temporary to
6134 hold the result to prevent duplicate calls. */
6135 if (!byref
&& sym
->ts
.type
!= BT_CHARACTER
6136 && ((sym
->attr
.allocatable
&& !sym
->attr
.dimension
&& !comp
)
6137 || (comp
&& comp
->attr
.allocatable
&& !comp
->attr
.dimension
)))
6139 tmp
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
6140 gfc_add_modify (&se
->pre
, tmp
, se
->expr
);
6142 tmp
= gfc_call_free (tmp
);
6143 gfc_add_expr_to_block (&post
, tmp
);
6144 gfc_add_modify (&post
, se
->expr
, build_int_cst (TREE_TYPE (se
->expr
), 0));
6147 /* If we have a pointer function, but we don't want a pointer, e.g.
6150 where f is pointer valued, we have to dereference the result. */
6151 if (!se
->want_pointer
&& !byref
6152 && ((!comp
&& (sym
->attr
.pointer
|| sym
->attr
.allocatable
))
6153 || (comp
&& (comp
->attr
.pointer
|| comp
->attr
.allocatable
))))
6154 se
->expr
= build_fold_indirect_ref_loc (input_location
, se
->expr
);
6156 /* f2c calling conventions require a scalar default real function to
6157 return a double precision result. Convert this back to default
6158 real. We only care about the cases that can happen in Fortran 77.
6160 if (flag_f2c
&& sym
->ts
.type
== BT_REAL
6161 && sym
->ts
.kind
== gfc_default_real_kind
6162 && !sym
->attr
.always_explicit
)
6163 se
->expr
= fold_convert (gfc_get_real_type (sym
->ts
.kind
), se
->expr
);
6165 /* A pure function may still have side-effects - it may modify its
6167 TREE_SIDE_EFFECTS (se
->expr
) = 1;
6169 if (!sym
->attr
.pure
)
6170 TREE_SIDE_EFFECTS (se
->expr
) = 1;
6175 /* Add the function call to the pre chain. There is no expression. */
6176 gfc_add_expr_to_block (&se
->pre
, se
->expr
);
6177 se
->expr
= NULL_TREE
;
6179 if (!se
->direct_byref
)
6181 if ((sym
->attr
.dimension
&& !comp
) || (comp
&& comp
->attr
.dimension
))
6183 if (gfc_option
.rtcheck
& GFC_RTCHECK_BOUNDS
)
6185 /* Check the data pointer hasn't been modified. This would
6186 happen in a function returning a pointer. */
6187 tmp
= gfc_conv_descriptor_data_get (info
->descriptor
);
6188 tmp
= fold_build2_loc (input_location
, NE_EXPR
,
6191 gfc_trans_runtime_check (true, false, tmp
, &se
->pre
, NULL
,
6194 se
->expr
= info
->descriptor
;
6195 /* Bundle in the string length. */
6196 se
->string_length
= len
;
6198 else if (ts
.type
== BT_CHARACTER
)
6200 /* Dereference for character pointer results. */
6201 if ((!comp
&& (sym
->attr
.pointer
|| sym
->attr
.allocatable
))
6202 || (comp
&& (comp
->attr
.pointer
|| comp
->attr
.allocatable
)))
6203 se
->expr
= build_fold_indirect_ref_loc (input_location
, var
);
6207 se
->string_length
= len
;
6211 gcc_assert (ts
.type
== BT_COMPLEX
&& flag_f2c
);
6212 se
->expr
= build_fold_indirect_ref_loc (input_location
, var
);
6217 /* Associate the rhs class object's meta-data with the result, when the
6218 result is a temporary. */
6219 if (args
&& args
->expr
&& args
->expr
->ts
.type
== BT_CLASS
6220 && sym
->ts
.type
== BT_CLASS
&& result
!= NULL_TREE
&& DECL_P (result
)
6221 && !GFC_CLASS_TYPE_P (TREE_TYPE (result
)))
6224 gfc_expr
*class_expr
= gfc_find_and_cut_at_last_class_ref (args
->expr
);
6226 gfc_init_se (&parmse
, NULL
);
6227 parmse
.data_not_needed
= 1;
6228 gfc_conv_expr (&parmse
, class_expr
);
6229 if (!DECL_LANG_SPECIFIC (result
))
6230 gfc_allocate_lang_decl (result
);
6231 GFC_DECL_SAVED_DESCRIPTOR (result
) = parmse
.expr
;
6232 gfc_free_expr (class_expr
);
6233 gcc_assert (parmse
.pre
.head
== NULL_TREE
6234 && parmse
.post
.head
== NULL_TREE
);
6237 /* Follow the function call with the argument post block. */
6240 gfc_add_block_to_block (&se
->pre
, &post
);
6242 /* Transformational functions of derived types with allocatable
6243 components must have the result allocatable components copied when the
6244 argument is actually given. */
6245 arg
= expr
->value
.function
.actual
;
6246 if (result
&& arg
&& expr
->rank
6247 && expr
->value
.function
.isym
6248 && expr
->value
.function
.isym
->transformational
6250 && arg
->expr
->ts
.type
== BT_DERIVED
6251 && arg
->expr
->ts
.u
.derived
->attr
.alloc_comp
)
6254 /* Copy the allocatable components. We have to use a
6255 temporary here to prevent source allocatable components
6256 from being corrupted. */
6257 tmp2
= gfc_evaluate_now (result
, &se
->pre
);
6258 tmp
= gfc_copy_alloc_comp (arg
->expr
->ts
.u
.derived
,
6259 result
, tmp2
, expr
->rank
, 0);
6260 gfc_add_expr_to_block (&se
->pre
, tmp
);
6261 tmp
= gfc_copy_allocatable_data (result
, tmp2
, TREE_TYPE(tmp2
),
6263 gfc_add_expr_to_block (&se
->pre
, tmp
);
6265 /* Finally free the temporary's data field. */
6266 tmp
= gfc_conv_descriptor_data_get (tmp2
);
6267 tmp
= gfc_deallocate_with_status (tmp
, NULL_TREE
, NULL_TREE
,
6268 NULL_TREE
, NULL_TREE
, true,
6269 NULL
, GFC_CAF_COARRAY_NOCOARRAY
);
6270 gfc_add_expr_to_block (&se
->pre
, tmp
);
6275 /* For a function with a class array result, save the result as
6276 a temporary, set the info fields needed by the scalarizer and
6277 call the finalization function of the temporary. Note that the
6278 nullification of allocatable components needed by the result
6279 is done in gfc_trans_assignment_1. */
6280 if (expr
&& ((gfc_is_alloc_class_array_function (expr
)
6281 && se
->ss
&& se
->ss
->loop
)
6282 || gfc_is_alloc_class_scalar_function (expr
))
6283 && se
->expr
&& GFC_CLASS_TYPE_P (TREE_TYPE (se
->expr
))
6284 && expr
->must_finalize
)
6289 if (se
->ss
&& se
->ss
->loop
)
6291 se
->expr
= gfc_evaluate_now (se
->expr
, &se
->ss
->loop
->pre
);
6292 tmp
= gfc_class_data_get (se
->expr
);
6293 info
->descriptor
= tmp
;
6294 info
->data
= gfc_conv_descriptor_data_get (tmp
);
6295 info
->offset
= gfc_conv_descriptor_offset_get (tmp
);
6296 for (n
= 0; n
< se
->ss
->loop
->dimen
; n
++)
6298 tree dim
= gfc_rank_cst
[n
];
6299 se
->ss
->loop
->to
[n
] = gfc_conv_descriptor_ubound_get (tmp
, dim
);
6300 se
->ss
->loop
->from
[n
] = gfc_conv_descriptor_lbound_get (tmp
, dim
);
6305 /* TODO Eliminate the doubling of temporaries. This
6306 one is necessary to ensure no memory leakage. */
6307 se
->expr
= gfc_evaluate_now (se
->expr
, &se
->pre
);
6308 tmp
= gfc_class_data_get (se
->expr
);
6309 tmp
= gfc_conv_scalar_to_descriptor (se
, tmp
,
6310 CLASS_DATA (expr
->value
.function
.esym
->result
)->attr
);
6313 final_fndecl
= gfc_class_vtab_final_get (se
->expr
);
6314 is_final
= fold_build2_loc (input_location
, NE_EXPR
,
6317 fold_convert (TREE_TYPE (final_fndecl
),
6318 null_pointer_node
));
6319 final_fndecl
= build_fold_indirect_ref_loc (input_location
,
6321 tmp
= build_call_expr_loc (input_location
,
6323 gfc_build_addr_expr (NULL
, tmp
),
6324 gfc_class_vtab_size_get (se
->expr
),
6325 boolean_false_node
);
6326 tmp
= fold_build3_loc (input_location
, COND_EXPR
,
6327 void_type_node
, is_final
, tmp
,
6328 build_empty_stmt (input_location
));
6330 if (se
->ss
&& se
->ss
->loop
)
6332 gfc_add_expr_to_block (&se
->ss
->loop
->post
, tmp
);
6333 tmp
= gfc_call_free (info
->data
);
6334 gfc_add_expr_to_block (&se
->ss
->loop
->post
, tmp
);
6338 gfc_add_expr_to_block (&se
->post
, tmp
);
6339 tmp
= gfc_class_data_get (se
->expr
);
6340 tmp
= gfc_call_free (tmp
);
6341 gfc_add_expr_to_block (&se
->post
, tmp
);
6343 expr
->must_finalize
= 0;
6346 gfc_add_block_to_block (&se
->post
, &post
);
6349 return has_alternate_specifier
;
6353 /* Fill a character string with spaces. */
6356 fill_with_spaces (tree start
, tree type
, tree size
)
6358 stmtblock_t block
, loop
;
6359 tree i
, el
, exit_label
, cond
, tmp
;
6361 /* For a simple char type, we can call memset(). */
6362 if (compare_tree_int (TYPE_SIZE_UNIT (type
), 1) == 0)
6363 return build_call_expr_loc (input_location
,
6364 builtin_decl_explicit (BUILT_IN_MEMSET
),
6366 build_int_cst (gfc_get_int_type (gfc_c_int_kind
),
6367 lang_hooks
.to_target_charset (' ')),
6370 /* Otherwise, we use a loop:
6371 for (el = start, i = size; i > 0; el--, i+= TYPE_SIZE_UNIT (type))
6375 /* Initialize variables. */
6376 gfc_init_block (&block
);
6377 i
= gfc_create_var (sizetype
, "i");
6378 gfc_add_modify (&block
, i
, fold_convert (sizetype
, size
));
6379 el
= gfc_create_var (build_pointer_type (type
), "el");
6380 gfc_add_modify (&block
, el
, fold_convert (TREE_TYPE (el
), start
));
6381 exit_label
= gfc_build_label_decl (NULL_TREE
);
6382 TREE_USED (exit_label
) = 1;
6386 gfc_init_block (&loop
);
6388 /* Exit condition. */
6389 cond
= fold_build2_loc (input_location
, LE_EXPR
, boolean_type_node
, i
,
6390 build_zero_cst (sizetype
));
6391 tmp
= build1_v (GOTO_EXPR
, exit_label
);
6392 tmp
= fold_build3_loc (input_location
, COND_EXPR
, void_type_node
, cond
, tmp
,
6393 build_empty_stmt (input_location
));
6394 gfc_add_expr_to_block (&loop
, tmp
);
6397 gfc_add_modify (&loop
,
6398 fold_build1_loc (input_location
, INDIRECT_REF
, type
, el
),
6399 build_int_cst (type
, lang_hooks
.to_target_charset (' ')));
6401 /* Increment loop variables. */
6402 gfc_add_modify (&loop
, i
,
6403 fold_build2_loc (input_location
, MINUS_EXPR
, sizetype
, i
,
6404 TYPE_SIZE_UNIT (type
)));
6405 gfc_add_modify (&loop
, el
,
6406 fold_build_pointer_plus_loc (input_location
,
6407 el
, TYPE_SIZE_UNIT (type
)));
6409 /* Making the loop... actually loop! */
6410 tmp
= gfc_finish_block (&loop
);
6411 tmp
= build1_v (LOOP_EXPR
, tmp
);
6412 gfc_add_expr_to_block (&block
, tmp
);
6414 /* The exit label. */
6415 tmp
= build1_v (LABEL_EXPR
, exit_label
);
6416 gfc_add_expr_to_block (&block
, tmp
);
6419 return gfc_finish_block (&block
);
6423 /* Generate code to copy a string. */
6426 gfc_trans_string_copy (stmtblock_t
* block
, tree dlength
, tree dest
,
6427 int dkind
, tree slength
, tree src
, int skind
)
6429 tree tmp
, dlen
, slen
;
6438 stmtblock_t tempblock
;
6440 gcc_assert (dkind
== skind
);
6442 if (slength
!= NULL_TREE
)
6444 slen
= fold_convert (size_type_node
, gfc_evaluate_now (slength
, block
));
6445 ssc
= gfc_string_to_single_character (slen
, src
, skind
);
6449 slen
= build_int_cst (size_type_node
, 1);
6453 if (dlength
!= NULL_TREE
)
6455 dlen
= fold_convert (size_type_node
, gfc_evaluate_now (dlength
, block
));
6456 dsc
= gfc_string_to_single_character (dlen
, dest
, dkind
);
6460 dlen
= build_int_cst (size_type_node
, 1);
6464 /* Assign directly if the types are compatible. */
6465 if (dsc
!= NULL_TREE
&& ssc
!= NULL_TREE
6466 && TREE_TYPE (dsc
) == TREE_TYPE (ssc
))
6468 gfc_add_modify (block
, dsc
, ssc
);
6472 /* The string copy algorithm below generates code like
6475 memmove (dest, src, min(dlen, slen));
6477 memset(&dest[slen], ' ', dlen - slen);
6481 /* Do nothing if the destination length is zero. */
6482 cond
= fold_build2_loc (input_location
, GT_EXPR
, boolean_type_node
, dlen
,
6483 build_int_cst (size_type_node
, 0));
6485 /* For non-default character kinds, we have to multiply the string
6486 length by the base type size. */
6487 chartype
= gfc_get_char_type (dkind
);
6488 slen
= fold_build2_loc (input_location
, MULT_EXPR
, size_type_node
,
6489 fold_convert (size_type_node
, slen
),
6490 fold_convert (size_type_node
,
6491 TYPE_SIZE_UNIT (chartype
)));
6492 dlen
= fold_build2_loc (input_location
, MULT_EXPR
, size_type_node
,
6493 fold_convert (size_type_node
, dlen
),
6494 fold_convert (size_type_node
,
6495 TYPE_SIZE_UNIT (chartype
)));
6497 if (dlength
&& POINTER_TYPE_P (TREE_TYPE (dest
)))
6498 dest
= fold_convert (pvoid_type_node
, dest
);
6500 dest
= gfc_build_addr_expr (pvoid_type_node
, dest
);
6502 if (slength
&& POINTER_TYPE_P (TREE_TYPE (src
)))
6503 src
= fold_convert (pvoid_type_node
, src
);
6505 src
= gfc_build_addr_expr (pvoid_type_node
, src
);
6507 /* First do the memmove. */
6508 tmp2
= fold_build2_loc (input_location
, MIN_EXPR
, TREE_TYPE (dlen
), dlen
,
6510 tmp2
= build_call_expr_loc (input_location
,
6511 builtin_decl_explicit (BUILT_IN_MEMMOVE
),
6512 3, dest
, src
, tmp2
);
6513 stmtblock_t tmpblock2
;
6514 gfc_init_block (&tmpblock2
);
6515 gfc_add_expr_to_block (&tmpblock2
, tmp2
);
6517 /* If the destination is longer, fill the end with spaces. */
6518 cond2
= fold_build2_loc (input_location
, LT_EXPR
, boolean_type_node
, slen
,
6521 /* Wstringop-overflow appears at -O3 even though this warning is not
6522 explicitly available in fortran nor can it be switched off. If the
6523 source length is a constant, its negative appears as a very large
6524 postive number and triggers the warning in BUILTIN_MEMSET. Fixing
6525 the result of the MINUS_EXPR suppresses this spurious warning. */
6526 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
6527 TREE_TYPE(dlen
), dlen
, slen
);
6528 if (slength
&& TREE_CONSTANT (slength
))
6529 tmp
= gfc_evaluate_now (tmp
, block
);
6531 tmp4
= fold_build_pointer_plus_loc (input_location
, dest
, slen
);
6532 tmp4
= fill_with_spaces (tmp4
, chartype
, tmp
);
6534 gfc_init_block (&tempblock
);
6535 gfc_add_expr_to_block (&tempblock
, tmp4
);
6536 tmp3
= gfc_finish_block (&tempblock
);
6538 /* The whole copy_string function is there. */
6539 tmp
= fold_build3_loc (input_location
, COND_EXPR
, void_type_node
, cond2
,
6540 tmp3
, build_empty_stmt (input_location
));
6541 gfc_add_expr_to_block (&tmpblock2
, tmp
);
6542 tmp
= gfc_finish_block (&tmpblock2
);
6543 tmp
= fold_build3_loc (input_location
, COND_EXPR
, void_type_node
, cond
, tmp
,
6544 build_empty_stmt (input_location
));
6545 gfc_add_expr_to_block (block
, tmp
);
6549 /* Translate a statement function.
6550 The value of a statement function reference is obtained by evaluating the
6551 expression using the values of the actual arguments for the values of the
6552 corresponding dummy arguments. */
6555 gfc_conv_statement_function (gfc_se
* se
, gfc_expr
* expr
)
6559 gfc_formal_arglist
*fargs
;
6560 gfc_actual_arglist
*args
;
6563 gfc_saved_var
*saved_vars
;
6569 sym
= expr
->symtree
->n
.sym
;
6570 args
= expr
->value
.function
.actual
;
6571 gfc_init_se (&lse
, NULL
);
6572 gfc_init_se (&rse
, NULL
);
6575 for (fargs
= gfc_sym_get_dummy_args (sym
); fargs
; fargs
= fargs
->next
)
6577 saved_vars
= XCNEWVEC (gfc_saved_var
, n
);
6578 temp_vars
= XCNEWVEC (tree
, n
);
6580 for (fargs
= gfc_sym_get_dummy_args (sym
), n
= 0; fargs
;
6581 fargs
= fargs
->next
, n
++)
6583 /* Each dummy shall be specified, explicitly or implicitly, to be
6585 gcc_assert (fargs
->sym
->attr
.dimension
== 0);
6588 if (fsym
->ts
.type
== BT_CHARACTER
)
6590 /* Copy string arguments. */
6593 gcc_assert (fsym
->ts
.u
.cl
&& fsym
->ts
.u
.cl
->length
6594 && fsym
->ts
.u
.cl
->length
->expr_type
== EXPR_CONSTANT
);
6596 /* Create a temporary to hold the value. */
6597 if (fsym
->ts
.u
.cl
->backend_decl
== NULL_TREE
)
6598 fsym
->ts
.u
.cl
->backend_decl
6599 = gfc_conv_constant_to_tree (fsym
->ts
.u
.cl
->length
);
6601 type
= gfc_get_character_type (fsym
->ts
.kind
, fsym
->ts
.u
.cl
);
6602 temp_vars
[n
] = gfc_create_var (type
, fsym
->name
);
6604 arglen
= TYPE_MAX_VALUE (TYPE_DOMAIN (type
));
6606 gfc_conv_expr (&rse
, args
->expr
);
6607 gfc_conv_string_parameter (&rse
);
6608 gfc_add_block_to_block (&se
->pre
, &lse
.pre
);
6609 gfc_add_block_to_block (&se
->pre
, &rse
.pre
);
6611 gfc_trans_string_copy (&se
->pre
, arglen
, temp_vars
[n
], fsym
->ts
.kind
,
6612 rse
.string_length
, rse
.expr
, fsym
->ts
.kind
);
6613 gfc_add_block_to_block (&se
->pre
, &lse
.post
);
6614 gfc_add_block_to_block (&se
->pre
, &rse
.post
);
6618 /* For everything else, just evaluate the expression. */
6620 /* Create a temporary to hold the value. */
6621 type
= gfc_typenode_for_spec (&fsym
->ts
);
6622 temp_vars
[n
] = gfc_create_var (type
, fsym
->name
);
6624 gfc_conv_expr (&lse
, args
->expr
);
6626 gfc_add_block_to_block (&se
->pre
, &lse
.pre
);
6627 gfc_add_modify (&se
->pre
, temp_vars
[n
], lse
.expr
);
6628 gfc_add_block_to_block (&se
->pre
, &lse
.post
);
6634 /* Use the temporary variables in place of the real ones. */
6635 for (fargs
= gfc_sym_get_dummy_args (sym
), n
= 0; fargs
;
6636 fargs
= fargs
->next
, n
++)
6637 gfc_shadow_sym (fargs
->sym
, temp_vars
[n
], &saved_vars
[n
]);
6639 gfc_conv_expr (se
, sym
->value
);
6641 if (sym
->ts
.type
== BT_CHARACTER
)
6643 gfc_conv_const_charlen (sym
->ts
.u
.cl
);
6645 /* Force the expression to the correct length. */
6646 if (!INTEGER_CST_P (se
->string_length
)
6647 || tree_int_cst_lt (se
->string_length
,
6648 sym
->ts
.u
.cl
->backend_decl
))
6650 type
= gfc_get_character_type (sym
->ts
.kind
, sym
->ts
.u
.cl
);
6651 tmp
= gfc_create_var (type
, sym
->name
);
6652 tmp
= gfc_build_addr_expr (build_pointer_type (type
), tmp
);
6653 gfc_trans_string_copy (&se
->pre
, sym
->ts
.u
.cl
->backend_decl
, tmp
,
6654 sym
->ts
.kind
, se
->string_length
, se
->expr
,
6658 se
->string_length
= sym
->ts
.u
.cl
->backend_decl
;
6661 /* Restore the original variables. */
6662 for (fargs
= gfc_sym_get_dummy_args (sym
), n
= 0; fargs
;
6663 fargs
= fargs
->next
, n
++)
6664 gfc_restore_sym (fargs
->sym
, &saved_vars
[n
]);
6670 /* Translate a function expression. */
6673 gfc_conv_function_expr (gfc_se
* se
, gfc_expr
* expr
)
6677 if (expr
->value
.function
.isym
)
6679 gfc_conv_intrinsic_function (se
, expr
);
6683 /* expr.value.function.esym is the resolved (specific) function symbol for
6684 most functions. However this isn't set for dummy procedures. */
6685 sym
= expr
->value
.function
.esym
;
6687 sym
= expr
->symtree
->n
.sym
;
6689 /* The IEEE_ARITHMETIC functions are caught here. */
6690 if (sym
->from_intmod
== INTMOD_IEEE_ARITHMETIC
)
6691 if (gfc_conv_ieee_arithmetic_function (se
, expr
))
6694 /* We distinguish statement functions from general functions to improve
6695 runtime performance. */
6696 if (sym
->attr
.proc
== PROC_ST_FUNCTION
)
6698 gfc_conv_statement_function (se
, expr
);
6702 gfc_conv_procedure_call (se
, sym
, expr
->value
.function
.actual
, expr
,
6707 /* Determine whether the given EXPR_CONSTANT is a zero initializer. */
6710 is_zero_initializer_p (gfc_expr
* expr
)
6712 if (expr
->expr_type
!= EXPR_CONSTANT
)
6715 /* We ignore constants with prescribed memory representations for now. */
6716 if (expr
->representation
.string
)
6719 switch (expr
->ts
.type
)
6722 return mpz_cmp_si (expr
->value
.integer
, 0) == 0;
6725 return mpfr_zero_p (expr
->value
.real
)
6726 && MPFR_SIGN (expr
->value
.real
) >= 0;
6729 return expr
->value
.logical
== 0;
6732 return mpfr_zero_p (mpc_realref (expr
->value
.complex))
6733 && MPFR_SIGN (mpc_realref (expr
->value
.complex)) >= 0
6734 && mpfr_zero_p (mpc_imagref (expr
->value
.complex))
6735 && MPFR_SIGN (mpc_imagref (expr
->value
.complex)) >= 0;
6745 gfc_conv_array_constructor_expr (gfc_se
* se
, gfc_expr
* expr
)
6750 gcc_assert (ss
!= NULL
&& ss
!= gfc_ss_terminator
);
6751 gcc_assert (ss
->info
->expr
== expr
&& ss
->info
->type
== GFC_SS_CONSTRUCTOR
);
6753 gfc_conv_tmp_array_ref (se
);
6757 /* Build a static initializer. EXPR is the expression for the initial value.
6758 The other parameters describe the variable of the component being
6759 initialized. EXPR may be null. */
6762 gfc_conv_initializer (gfc_expr
* expr
, gfc_typespec
* ts
, tree type
,
6763 bool array
, bool pointer
, bool procptr
)
6767 if (flag_coarray
!= GFC_FCOARRAY_LIB
&& ts
->type
== BT_DERIVED
6768 && ts
->u
.derived
->from_intmod
== INTMOD_ISO_FORTRAN_ENV
6769 && ts
->u
.derived
->intmod_sym_id
== ISOFORTRAN_EVENT_TYPE
)
6770 return build_constructor (type
, NULL
);
6772 if (!(expr
|| pointer
|| procptr
))
6775 /* Check if we have ISOCBINDING_NULL_PTR or ISOCBINDING_NULL_FUNPTR
6776 (these are the only two iso_c_binding derived types that can be
6777 used as initialization expressions). If so, we need to modify
6778 the 'expr' to be that for a (void *). */
6779 if (expr
!= NULL
&& expr
->ts
.type
== BT_DERIVED
6780 && expr
->ts
.is_iso_c
&& expr
->ts
.u
.derived
)
6782 gfc_symbol
*derived
= expr
->ts
.u
.derived
;
6784 /* The derived symbol has already been converted to a (void *). Use
6786 expr
= gfc_get_int_expr (derived
->ts
.kind
, NULL
, 0);
6787 expr
->ts
.f90_type
= derived
->ts
.f90_type
;
6789 gfc_init_se (&se
, NULL
);
6790 gfc_conv_constant (&se
, expr
);
6791 gcc_assert (TREE_CODE (se
.expr
) != CONSTRUCTOR
);
6795 if (array
&& !procptr
)
6798 /* Arrays need special handling. */
6800 ctor
= gfc_build_null_descriptor (type
);
6801 /* Special case assigning an array to zero. */
6802 else if (is_zero_initializer_p (expr
))
6803 ctor
= build_constructor (type
, NULL
);
6805 ctor
= gfc_conv_array_initializer (type
, expr
);
6806 TREE_STATIC (ctor
) = 1;
6809 else if (pointer
|| procptr
)
6811 if (ts
->type
== BT_CLASS
&& !procptr
)
6813 gfc_init_se (&se
, NULL
);
6814 gfc_conv_structure (&se
, gfc_class_initializer (ts
, expr
), 1);
6815 gcc_assert (TREE_CODE (se
.expr
) == CONSTRUCTOR
);
6816 TREE_STATIC (se
.expr
) = 1;
6819 else if (!expr
|| expr
->expr_type
== EXPR_NULL
)
6820 return fold_convert (type
, null_pointer_node
);
6823 gfc_init_se (&se
, NULL
);
6824 se
.want_pointer
= 1;
6825 gfc_conv_expr (&se
, expr
);
6826 gcc_assert (TREE_CODE (se
.expr
) != CONSTRUCTOR
);
6836 gfc_init_se (&se
, NULL
);
6837 if (ts
->type
== BT_CLASS
&& expr
->expr_type
== EXPR_NULL
)
6838 gfc_conv_structure (&se
, gfc_class_initializer (ts
, expr
), 1);
6840 gfc_conv_structure (&se
, expr
, 1);
6841 gcc_assert (TREE_CODE (se
.expr
) == CONSTRUCTOR
);
6842 TREE_STATIC (se
.expr
) = 1;
6847 tree ctor
= gfc_conv_string_init (ts
->u
.cl
->backend_decl
,expr
);
6848 TREE_STATIC (ctor
) = 1;
6853 gfc_init_se (&se
, NULL
);
6854 gfc_conv_constant (&se
, expr
);
6855 gcc_assert (TREE_CODE (se
.expr
) != CONSTRUCTOR
);
6862 gfc_trans_subarray_assign (tree dest
, gfc_component
* cm
, gfc_expr
* expr
)
6868 gfc_array_info
*lss_array
;
6875 gfc_start_block (&block
);
6877 /* Initialize the scalarizer. */
6878 gfc_init_loopinfo (&loop
);
6880 gfc_init_se (&lse
, NULL
);
6881 gfc_init_se (&rse
, NULL
);
6884 rss
= gfc_walk_expr (expr
);
6885 if (rss
== gfc_ss_terminator
)
6886 /* The rhs is scalar. Add a ss for the expression. */
6887 rss
= gfc_get_scalar_ss (gfc_ss_terminator
, expr
);
6889 /* Create a SS for the destination. */
6890 lss
= gfc_get_array_ss (gfc_ss_terminator
, NULL
, cm
->as
->rank
,
6892 lss_array
= &lss
->info
->data
.array
;
6893 lss_array
->shape
= gfc_get_shape (cm
->as
->rank
);
6894 lss_array
->descriptor
= dest
;
6895 lss_array
->data
= gfc_conv_array_data (dest
);
6896 lss_array
->offset
= gfc_conv_array_offset (dest
);
6897 for (n
= 0; n
< cm
->as
->rank
; n
++)
6899 lss_array
->start
[n
] = gfc_conv_array_lbound (dest
, n
);
6900 lss_array
->stride
[n
] = gfc_index_one_node
;
6902 mpz_init (lss_array
->shape
[n
]);
6903 mpz_sub (lss_array
->shape
[n
], cm
->as
->upper
[n
]->value
.integer
,
6904 cm
->as
->lower
[n
]->value
.integer
);
6905 mpz_add_ui (lss_array
->shape
[n
], lss_array
->shape
[n
], 1);
6908 /* Associate the SS with the loop. */
6909 gfc_add_ss_to_loop (&loop
, lss
);
6910 gfc_add_ss_to_loop (&loop
, rss
);
6912 /* Calculate the bounds of the scalarization. */
6913 gfc_conv_ss_startstride (&loop
);
6915 /* Setup the scalarizing loops. */
6916 gfc_conv_loop_setup (&loop
, &expr
->where
);
6918 /* Setup the gfc_se structures. */
6919 gfc_copy_loopinfo_to_se (&lse
, &loop
);
6920 gfc_copy_loopinfo_to_se (&rse
, &loop
);
6923 gfc_mark_ss_chain_used (rss
, 1);
6925 gfc_mark_ss_chain_used (lss
, 1);
6927 /* Start the scalarized loop body. */
6928 gfc_start_scalarized_body (&loop
, &body
);
6930 gfc_conv_tmp_array_ref (&lse
);
6931 if (cm
->ts
.type
== BT_CHARACTER
)
6932 lse
.string_length
= cm
->ts
.u
.cl
->backend_decl
;
6934 gfc_conv_expr (&rse
, expr
);
6936 tmp
= gfc_trans_scalar_assign (&lse
, &rse
, cm
->ts
, true, false);
6937 gfc_add_expr_to_block (&body
, tmp
);
6939 gcc_assert (rse
.ss
== gfc_ss_terminator
);
6941 /* Generate the copying loops. */
6942 gfc_trans_scalarizing_loops (&loop
, &body
);
6944 /* Wrap the whole thing up. */
6945 gfc_add_block_to_block (&block
, &loop
.pre
);
6946 gfc_add_block_to_block (&block
, &loop
.post
);
6948 gcc_assert (lss_array
->shape
!= NULL
);
6949 gfc_free_shape (&lss_array
->shape
, cm
->as
->rank
);
6950 gfc_cleanup_loop (&loop
);
6952 return gfc_finish_block (&block
);
6957 gfc_trans_alloc_subarray_assign (tree dest
, gfc_component
* cm
,
6967 gfc_expr
*arg
= NULL
;
6969 gfc_start_block (&block
);
6970 gfc_init_se (&se
, NULL
);
6972 /* Get the descriptor for the expressions. */
6973 se
.want_pointer
= 0;
6974 gfc_conv_expr_descriptor (&se
, expr
);
6975 gfc_add_block_to_block (&block
, &se
.pre
);
6976 gfc_add_modify (&block
, dest
, se
.expr
);
6978 /* Deal with arrays of derived types with allocatable components. */
6979 if (gfc_bt_struct (cm
->ts
.type
)
6980 && cm
->ts
.u
.derived
->attr
.alloc_comp
)
6981 // TODO: Fix caf_mode
6982 tmp
= gfc_copy_alloc_comp (cm
->ts
.u
.derived
,
6985 else if (cm
->ts
.type
== BT_CLASS
&& expr
->ts
.type
== BT_DERIVED
6986 && CLASS_DATA(cm
)->attr
.allocatable
)
6988 if (cm
->ts
.u
.derived
->attr
.alloc_comp
)
6989 // TODO: Fix caf_mode
6990 tmp
= gfc_copy_alloc_comp (expr
->ts
.u
.derived
,
6995 tmp
= TREE_TYPE (dest
);
6996 tmp
= gfc_duplicate_allocatable (dest
, se
.expr
,
6997 tmp
, expr
->rank
, NULL_TREE
);
7001 tmp
= gfc_duplicate_allocatable (dest
, se
.expr
,
7002 TREE_TYPE(cm
->backend_decl
),
7003 cm
->as
->rank
, NULL_TREE
);
7005 gfc_add_expr_to_block (&block
, tmp
);
7006 gfc_add_block_to_block (&block
, &se
.post
);
7008 if (expr
->expr_type
!= EXPR_VARIABLE
)
7009 gfc_conv_descriptor_data_set (&block
, se
.expr
,
7012 /* We need to know if the argument of a conversion function is a
7013 variable, so that the correct lower bound can be used. */
7014 if (expr
->expr_type
== EXPR_FUNCTION
7015 && expr
->value
.function
.isym
7016 && expr
->value
.function
.isym
->conversion
7017 && expr
->value
.function
.actual
->expr
7018 && expr
->value
.function
.actual
->expr
->expr_type
== EXPR_VARIABLE
)
7019 arg
= expr
->value
.function
.actual
->expr
;
7021 /* Obtain the array spec of full array references. */
7023 as
= gfc_get_full_arrayspec_from_expr (arg
);
7025 as
= gfc_get_full_arrayspec_from_expr (expr
);
7027 /* Shift the lbound and ubound of temporaries to being unity,
7028 rather than zero, based. Always calculate the offset. */
7029 offset
= gfc_conv_descriptor_offset_get (dest
);
7030 gfc_add_modify (&block
, offset
, gfc_index_zero_node
);
7031 tmp2
=gfc_create_var (gfc_array_index_type
, NULL
);
7033 for (n
= 0; n
< expr
->rank
; n
++)
7038 /* Obtain the correct lbound - ISO/IEC TR 15581:2001 page 9.
7039 TODO It looks as if gfc_conv_expr_descriptor should return
7040 the correct bounds and that the following should not be
7041 necessary. This would simplify gfc_conv_intrinsic_bound
7043 if (as
&& as
->lower
[n
])
7046 gfc_init_se (&lbse
, NULL
);
7047 gfc_conv_expr (&lbse
, as
->lower
[n
]);
7048 gfc_add_block_to_block (&block
, &lbse
.pre
);
7049 lbound
= gfc_evaluate_now (lbse
.expr
, &block
);
7053 tmp
= gfc_get_symbol_decl (arg
->symtree
->n
.sym
);
7054 lbound
= gfc_conv_descriptor_lbound_get (tmp
,
7058 lbound
= gfc_conv_descriptor_lbound_get (dest
,
7061 lbound
= gfc_index_one_node
;
7063 lbound
= fold_convert (gfc_array_index_type
, lbound
);
7065 /* Shift the bounds and set the offset accordingly. */
7066 tmp
= gfc_conv_descriptor_ubound_get (dest
, gfc_rank_cst
[n
]);
7067 span
= fold_build2_loc (input_location
, MINUS_EXPR
, gfc_array_index_type
,
7068 tmp
, gfc_conv_descriptor_lbound_get (dest
, gfc_rank_cst
[n
]));
7069 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
, gfc_array_index_type
,
7071 gfc_conv_descriptor_ubound_set (&block
, dest
,
7072 gfc_rank_cst
[n
], tmp
);
7073 gfc_conv_descriptor_lbound_set (&block
, dest
,
7074 gfc_rank_cst
[n
], lbound
);
7076 tmp
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
,
7077 gfc_conv_descriptor_lbound_get (dest
,
7079 gfc_conv_descriptor_stride_get (dest
,
7081 gfc_add_modify (&block
, tmp2
, tmp
);
7082 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
, gfc_array_index_type
,
7084 gfc_conv_descriptor_offset_set (&block
, dest
, tmp
);
7089 /* If a conversion expression has a null data pointer
7090 argument, nullify the allocatable component. */
7094 if (arg
->symtree
->n
.sym
->attr
.allocatable
7095 || arg
->symtree
->n
.sym
->attr
.pointer
)
7097 non_null_expr
= gfc_finish_block (&block
);
7098 gfc_start_block (&block
);
7099 gfc_conv_descriptor_data_set (&block
, dest
,
7101 null_expr
= gfc_finish_block (&block
);
7102 tmp
= gfc_conv_descriptor_data_get (arg
->symtree
->n
.sym
->backend_decl
);
7103 tmp
= build2_loc (input_location
, EQ_EXPR
, boolean_type_node
, tmp
,
7104 fold_convert (TREE_TYPE (tmp
), null_pointer_node
));
7105 return build3_v (COND_EXPR
, tmp
,
7106 null_expr
, non_null_expr
);
7110 return gfc_finish_block (&block
);
7114 /* Allocate or reallocate scalar component, as necessary. */
7117 alloc_scalar_allocatable_for_subcomponent_assignment (stmtblock_t
*block
,
7127 tree lhs_cl_size
= NULL_TREE
;
7132 if (!expr2
|| expr2
->rank
)
7135 realloc_lhs_warning (expr2
->ts
.type
, false, &expr2
->where
);
7137 if (cm
->ts
.type
== BT_CHARACTER
&& cm
->ts
.deferred
)
7139 char name
[GFC_MAX_SYMBOL_LEN
+9];
7140 gfc_component
*strlen
;
7141 /* Use the rhs string length and the lhs element size. */
7142 gcc_assert (expr2
->ts
.type
== BT_CHARACTER
);
7143 if (!expr2
->ts
.u
.cl
->backend_decl
)
7145 gfc_conv_string_length (expr2
->ts
.u
.cl
, expr2
, block
);
7146 gcc_assert (expr2
->ts
.u
.cl
->backend_decl
);
7149 size
= expr2
->ts
.u
.cl
->backend_decl
;
7151 /* Ensure that cm->ts.u.cl->backend_decl is a componentref to _%s_length
7153 sprintf (name
, "_%s_length", cm
->name
);
7154 strlen
= gfc_find_component (sym
, name
, true, true, NULL
);
7155 lhs_cl_size
= fold_build3_loc (input_location
, COMPONENT_REF
,
7156 gfc_charlen_type_node
,
7157 TREE_OPERAND (comp
, 0),
7158 strlen
->backend_decl
, NULL_TREE
);
7160 tmp
= TREE_TYPE (gfc_typenode_for_spec (&cm
->ts
));
7161 tmp
= TYPE_SIZE_UNIT (tmp
);
7162 size_in_bytes
= fold_build2_loc (input_location
, MULT_EXPR
,
7163 TREE_TYPE (tmp
), tmp
,
7164 fold_convert (TREE_TYPE (tmp
), size
));
7166 else if (cm
->ts
.type
== BT_CLASS
)
7168 gcc_assert (expr2
->ts
.type
== BT_CLASS
|| expr2
->ts
.type
== BT_DERIVED
);
7169 if (expr2
->ts
.type
== BT_DERIVED
)
7171 tmp
= gfc_get_symbol_decl (expr2
->ts
.u
.derived
);
7172 size
= TYPE_SIZE_UNIT (tmp
);
7178 e2vtab
= gfc_find_and_cut_at_last_class_ref (expr2
);
7179 gfc_add_vptr_component (e2vtab
);
7180 gfc_add_size_component (e2vtab
);
7181 gfc_init_se (&se
, NULL
);
7182 gfc_conv_expr (&se
, e2vtab
);
7183 gfc_add_block_to_block (block
, &se
.pre
);
7184 size
= fold_convert (size_type_node
, se
.expr
);
7185 gfc_free_expr (e2vtab
);
7187 size_in_bytes
= size
;
7191 /* Otherwise use the length in bytes of the rhs. */
7192 size
= TYPE_SIZE_UNIT (gfc_typenode_for_spec (&cm
->ts
));
7193 size_in_bytes
= size
;
7196 size_in_bytes
= fold_build2_loc (input_location
, MAX_EXPR
, size_type_node
,
7197 size_in_bytes
, size_one_node
);
7199 if (cm
->ts
.type
== BT_DERIVED
&& cm
->ts
.u
.derived
->attr
.alloc_comp
)
7201 tmp
= build_call_expr_loc (input_location
,
7202 builtin_decl_explicit (BUILT_IN_CALLOC
),
7203 2, build_one_cst (size_type_node
),
7205 tmp
= fold_convert (TREE_TYPE (comp
), tmp
);
7206 gfc_add_modify (block
, comp
, tmp
);
7210 tmp
= build_call_expr_loc (input_location
,
7211 builtin_decl_explicit (BUILT_IN_MALLOC
),
7213 if (GFC_CLASS_TYPE_P (TREE_TYPE (comp
)))
7214 ptr
= gfc_class_data_get (comp
);
7217 tmp
= fold_convert (TREE_TYPE (ptr
), tmp
);
7218 gfc_add_modify (block
, ptr
, tmp
);
7221 if (cm
->ts
.type
== BT_CHARACTER
&& cm
->ts
.deferred
)
7222 /* Update the lhs character length. */
7223 gfc_add_modify (block
, lhs_cl_size
, size
);
7227 /* Assign a single component of a derived type constructor. */
7230 gfc_trans_subcomponent_assign (tree dest
, gfc_component
* cm
, gfc_expr
* expr
,
7231 gfc_symbol
*sym
, bool init
)
7239 gfc_start_block (&block
);
7241 if (cm
->attr
.pointer
|| cm
->attr
.proc_pointer
)
7243 /* Only care about pointers here, not about allocatables. */
7244 gfc_init_se (&se
, NULL
);
7245 /* Pointer component. */
7246 if ((cm
->attr
.dimension
|| cm
->attr
.codimension
)
7247 && !cm
->attr
.proc_pointer
)
7249 /* Array pointer. */
7250 if (expr
->expr_type
== EXPR_NULL
)
7251 gfc_conv_descriptor_data_set (&block
, dest
, null_pointer_node
);
7254 se
.direct_byref
= 1;
7256 gfc_conv_expr_descriptor (&se
, expr
);
7257 gfc_add_block_to_block (&block
, &se
.pre
);
7258 gfc_add_block_to_block (&block
, &se
.post
);
7263 /* Scalar pointers. */
7264 se
.want_pointer
= 1;
7265 gfc_conv_expr (&se
, expr
);
7266 gfc_add_block_to_block (&block
, &se
.pre
);
7268 if (expr
->symtree
&& expr
->symtree
->n
.sym
->attr
.proc_pointer
7269 && expr
->symtree
->n
.sym
->attr
.dummy
)
7270 se
.expr
= build_fold_indirect_ref_loc (input_location
, se
.expr
);
7272 gfc_add_modify (&block
, dest
,
7273 fold_convert (TREE_TYPE (dest
), se
.expr
));
7274 gfc_add_block_to_block (&block
, &se
.post
);
7277 else if (cm
->ts
.type
== BT_CLASS
&& expr
->expr_type
== EXPR_NULL
)
7279 /* NULL initialization for CLASS components. */
7280 tmp
= gfc_trans_structure_assign (dest
,
7281 gfc_class_initializer (&cm
->ts
, expr
),
7283 gfc_add_expr_to_block (&block
, tmp
);
7285 else if ((cm
->attr
.dimension
|| cm
->attr
.codimension
)
7286 && !cm
->attr
.proc_pointer
)
7288 if (cm
->attr
.allocatable
&& expr
->expr_type
== EXPR_NULL
)
7289 gfc_conv_descriptor_data_set (&block
, dest
, null_pointer_node
);
7290 else if (cm
->attr
.allocatable
|| cm
->attr
.pdt_array
)
7292 tmp
= gfc_trans_alloc_subarray_assign (dest
, cm
, expr
);
7293 gfc_add_expr_to_block (&block
, tmp
);
7297 tmp
= gfc_trans_subarray_assign (dest
, cm
, expr
);
7298 gfc_add_expr_to_block (&block
, tmp
);
7301 else if (cm
->ts
.type
== BT_CLASS
7302 && CLASS_DATA (cm
)->attr
.dimension
7303 && CLASS_DATA (cm
)->attr
.allocatable
7304 && expr
->ts
.type
== BT_DERIVED
)
7306 vtab
= gfc_get_symbol_decl (gfc_find_vtab (&expr
->ts
));
7307 vtab
= gfc_build_addr_expr (NULL_TREE
, vtab
);
7308 tmp
= gfc_class_vptr_get (dest
);
7309 gfc_add_modify (&block
, tmp
,
7310 fold_convert (TREE_TYPE (tmp
), vtab
));
7311 tmp
= gfc_class_data_get (dest
);
7312 tmp
= gfc_trans_alloc_subarray_assign (tmp
, cm
, expr
);
7313 gfc_add_expr_to_block (&block
, tmp
);
7315 else if (init
&& cm
->attr
.allocatable
&& expr
->expr_type
== EXPR_NULL
)
7317 /* NULL initialization for allocatable components. */
7318 gfc_add_modify (&block
, dest
, fold_convert (TREE_TYPE (dest
),
7319 null_pointer_node
));
7321 else if (init
&& (cm
->attr
.allocatable
7322 || (cm
->ts
.type
== BT_CLASS
&& CLASS_DATA (cm
)->attr
.allocatable
7323 && expr
->ts
.type
!= BT_CLASS
)))
7325 /* Take care about non-array allocatable components here. The alloc_*
7326 routine below is motivated by the alloc_scalar_allocatable_for_
7327 assignment() routine, but with the realloc portions removed and
7329 alloc_scalar_allocatable_for_subcomponent_assignment (&block
,
7334 /* The remainder of these instructions follow the if (cm->attr.pointer)
7335 if (!cm->attr.dimension) part above. */
7336 gfc_init_se (&se
, NULL
);
7337 gfc_conv_expr (&se
, expr
);
7338 gfc_add_block_to_block (&block
, &se
.pre
);
7340 if (expr
->symtree
&& expr
->symtree
->n
.sym
->attr
.proc_pointer
7341 && expr
->symtree
->n
.sym
->attr
.dummy
)
7342 se
.expr
= build_fold_indirect_ref_loc (input_location
, se
.expr
);
7344 if (cm
->ts
.type
== BT_CLASS
&& expr
->ts
.type
== BT_DERIVED
)
7346 tmp
= gfc_class_data_get (dest
);
7347 tmp
= build_fold_indirect_ref_loc (input_location
, tmp
);
7348 vtab
= gfc_get_symbol_decl (gfc_find_vtab (&expr
->ts
));
7349 vtab
= gfc_build_addr_expr (NULL_TREE
, vtab
);
7350 gfc_add_modify (&block
, gfc_class_vptr_get (dest
),
7351 fold_convert (TREE_TYPE (gfc_class_vptr_get (dest
)), vtab
));
7354 tmp
= build_fold_indirect_ref_loc (input_location
, dest
);
7356 /* For deferred strings insert a memcpy. */
7357 if (cm
->ts
.type
== BT_CHARACTER
&& cm
->ts
.deferred
)
7360 gcc_assert (se
.string_length
|| expr
->ts
.u
.cl
->backend_decl
);
7361 size
= size_of_string_in_bytes (cm
->ts
.kind
, se
.string_length
7363 : expr
->ts
.u
.cl
->backend_decl
);
7364 tmp
= gfc_build_memcpy_call (tmp
, se
.expr
, size
);
7365 gfc_add_expr_to_block (&block
, tmp
);
7368 gfc_add_modify (&block
, tmp
,
7369 fold_convert (TREE_TYPE (tmp
), se
.expr
));
7370 gfc_add_block_to_block (&block
, &se
.post
);
7372 else if (expr
->ts
.type
== BT_UNION
)
7375 gfc_constructor
*c
= gfc_constructor_first (expr
->value
.constructor
);
7376 /* We mark that the entire union should be initialized with a contrived
7377 EXPR_NULL expression at the beginning. */
7378 if (c
!= NULL
&& c
->n
.component
== NULL
7379 && c
->expr
!= NULL
&& c
->expr
->expr_type
== EXPR_NULL
)
7381 tmp
= build2_loc (input_location
, MODIFY_EXPR
, void_type_node
,
7382 dest
, build_constructor (TREE_TYPE (dest
), NULL
));
7383 gfc_add_expr_to_block (&block
, tmp
);
7384 c
= gfc_constructor_next (c
);
7386 /* The following constructor expression, if any, represents a specific
7387 map intializer, as given by the user. */
7388 if (c
!= NULL
&& c
->expr
!= NULL
)
7390 gcc_assert (expr
->expr_type
== EXPR_STRUCTURE
);
7391 tmp
= gfc_trans_structure_assign (dest
, expr
, expr
->symtree
!= NULL
);
7392 gfc_add_expr_to_block (&block
, tmp
);
7395 else if (expr
->ts
.type
== BT_DERIVED
&& expr
->ts
.f90_type
!= BT_VOID
)
7397 if (expr
->expr_type
!= EXPR_STRUCTURE
)
7399 tree dealloc
= NULL_TREE
;
7400 gfc_init_se (&se
, NULL
);
7401 gfc_conv_expr (&se
, expr
);
7402 gfc_add_block_to_block (&block
, &se
.pre
);
7403 /* Prevent repeat evaluations in gfc_copy_alloc_comp by fixing the
7404 expression in a temporary variable and deallocate the allocatable
7405 components. Then we can the copy the expression to the result. */
7406 if (cm
->ts
.u
.derived
->attr
.alloc_comp
7407 && expr
->expr_type
!= EXPR_VARIABLE
)
7409 se
.expr
= gfc_evaluate_now (se
.expr
, &block
);
7410 dealloc
= gfc_deallocate_alloc_comp (cm
->ts
.u
.derived
, se
.expr
,
7413 gfc_add_modify (&block
, dest
,
7414 fold_convert (TREE_TYPE (dest
), se
.expr
));
7415 if (cm
->ts
.u
.derived
->attr
.alloc_comp
7416 && expr
->expr_type
!= EXPR_NULL
)
7418 // TODO: Fix caf_mode
7419 tmp
= gfc_copy_alloc_comp (cm
->ts
.u
.derived
, se
.expr
,
7420 dest
, expr
->rank
, 0);
7421 gfc_add_expr_to_block (&block
, tmp
);
7422 if (dealloc
!= NULL_TREE
)
7423 gfc_add_expr_to_block (&block
, dealloc
);
7425 gfc_add_block_to_block (&block
, &se
.post
);
7429 /* Nested constructors. */
7430 tmp
= gfc_trans_structure_assign (dest
, expr
, expr
->symtree
!= NULL
);
7431 gfc_add_expr_to_block (&block
, tmp
);
7434 else if (gfc_deferred_strlen (cm
, &tmp
))
7438 gcc_assert (strlen
);
7439 strlen
= fold_build3_loc (input_location
, COMPONENT_REF
,
7441 TREE_OPERAND (dest
, 0),
7444 if (expr
->expr_type
== EXPR_NULL
)
7446 tmp
= build_int_cst (TREE_TYPE (cm
->backend_decl
), 0);
7447 gfc_add_modify (&block
, dest
, tmp
);
7448 tmp
= build_int_cst (TREE_TYPE (strlen
), 0);
7449 gfc_add_modify (&block
, strlen
, tmp
);
7454 gfc_init_se (&se
, NULL
);
7455 gfc_conv_expr (&se
, expr
);
7456 size
= size_of_string_in_bytes (cm
->ts
.kind
, se
.string_length
);
7457 tmp
= build_call_expr_loc (input_location
,
7458 builtin_decl_explicit (BUILT_IN_MALLOC
),
7460 gfc_add_modify (&block
, dest
,
7461 fold_convert (TREE_TYPE (dest
), tmp
));
7462 gfc_add_modify (&block
, strlen
, se
.string_length
);
7463 tmp
= gfc_build_memcpy_call (dest
, se
.expr
, size
);
7464 gfc_add_expr_to_block (&block
, tmp
);
7467 else if (!cm
->attr
.artificial
)
7469 /* Scalar component (excluding deferred parameters). */
7470 gfc_init_se (&se
, NULL
);
7471 gfc_init_se (&lse
, NULL
);
7473 gfc_conv_expr (&se
, expr
);
7474 if (cm
->ts
.type
== BT_CHARACTER
)
7475 lse
.string_length
= cm
->ts
.u
.cl
->backend_decl
;
7477 tmp
= gfc_trans_scalar_assign (&lse
, &se
, cm
->ts
, false, false);
7478 gfc_add_expr_to_block (&block
, tmp
);
7480 return gfc_finish_block (&block
);
7483 /* Assign a derived type constructor to a variable. */
7486 gfc_trans_structure_assign (tree dest
, gfc_expr
* expr
, bool init
, bool coarray
)
7495 gfc_start_block (&block
);
7496 cm
= expr
->ts
.u
.derived
->components
;
7498 if (expr
->ts
.u
.derived
->from_intmod
== INTMOD_ISO_C_BINDING
7499 && (expr
->ts
.u
.derived
->intmod_sym_id
== ISOCBINDING_PTR
7500 || expr
->ts
.u
.derived
->intmod_sym_id
== ISOCBINDING_FUNPTR
))
7504 gfc_init_se (&se
, NULL
);
7505 gfc_init_se (&lse
, NULL
);
7506 gfc_conv_expr (&se
, gfc_constructor_first (expr
->value
.constructor
)->expr
);
7508 gfc_add_modify (&block
, lse
.expr
,
7509 fold_convert (TREE_TYPE (lse
.expr
), se
.expr
));
7511 return gfc_finish_block (&block
);
7515 gfc_init_se (&se
, NULL
);
7517 for (c
= gfc_constructor_first (expr
->value
.constructor
);
7518 c
; c
= gfc_constructor_next (c
), cm
= cm
->next
)
7520 /* Skip absent members in default initializers. */
7521 if (!c
->expr
&& !cm
->attr
.allocatable
)
7524 /* Register the component with the caf-lib before it is initialized.
7525 Register only allocatable components, that are not coarray'ed
7526 components (%comp[*]). Only register when the constructor is not the
7528 if (coarray
&& !cm
->attr
.codimension
7529 && (cm
->attr
.allocatable
|| cm
->attr
.pointer
)
7530 && (!c
->expr
|| c
->expr
->expr_type
== EXPR_NULL
))
7532 tree token
, desc
, size
;
7533 bool is_array
= cm
->ts
.type
== BT_CLASS
7534 ? CLASS_DATA (cm
)->attr
.dimension
: cm
->attr
.dimension
;
7536 field
= cm
->backend_decl
;
7537 field
= fold_build3_loc (input_location
, COMPONENT_REF
,
7538 TREE_TYPE (field
), dest
, field
, NULL_TREE
);
7539 if (cm
->ts
.type
== BT_CLASS
)
7540 field
= gfc_class_data_get (field
);
7542 token
= is_array
? gfc_conv_descriptor_token (field
)
7543 : fold_build3_loc (input_location
, COMPONENT_REF
,
7544 TREE_TYPE (cm
->caf_token
), dest
,
7545 cm
->caf_token
, NULL_TREE
);
7549 /* The _caf_register routine looks at the rank of the array
7550 descriptor to decide whether the data registered is an array
7552 int rank
= cm
->ts
.type
== BT_CLASS
? CLASS_DATA (cm
)->as
->rank
7554 /* When the rank is not known just set a positive rank, which
7555 suffices to recognize the data as array. */
7558 size
= integer_zero_node
;
7560 gfc_add_modify (&block
, gfc_conv_descriptor_dtype (desc
),
7561 build_int_cst (gfc_array_index_type
, rank
));
7565 desc
= gfc_conv_scalar_to_descriptor (&se
, field
,
7566 cm
->ts
.type
== BT_CLASS
7567 ? CLASS_DATA (cm
)->attr
7569 size
= TYPE_SIZE_UNIT (TREE_TYPE (field
));
7571 gfc_add_block_to_block (&block
, &se
.pre
);
7572 tmp
= build_call_expr_loc (input_location
, gfor_fndecl_caf_register
,
7573 7, size
, build_int_cst (
7575 GFC_CAF_COARRAY_ALLOC_REGISTER_ONLY
),
7576 gfc_build_addr_expr (pvoid_type_node
,
7578 gfc_build_addr_expr (NULL_TREE
, desc
),
7579 null_pointer_node
, null_pointer_node
,
7581 gfc_add_expr_to_block (&block
, tmp
);
7583 field
= cm
->backend_decl
;
7584 tmp
= fold_build3_loc (input_location
, COMPONENT_REF
, TREE_TYPE (field
),
7585 dest
, field
, NULL_TREE
);
7588 gfc_expr
*e
= gfc_get_null_expr (NULL
);
7589 tmp
= gfc_trans_subcomponent_assign (tmp
, cm
, e
, expr
->ts
.u
.derived
,
7594 tmp
= gfc_trans_subcomponent_assign (tmp
, cm
, c
->expr
,
7595 expr
->ts
.u
.derived
, init
);
7596 gfc_add_expr_to_block (&block
, tmp
);
7598 return gfc_finish_block (&block
);
7602 gfc_conv_union_initializer (vec
<constructor_elt
, va_gc
> *v
,
7603 gfc_component
*un
, gfc_expr
*init
)
7605 gfc_constructor
*ctor
;
7607 if (un
->ts
.type
!= BT_UNION
|| un
== NULL
|| init
== NULL
)
7610 ctor
= gfc_constructor_first (init
->value
.constructor
);
7612 if (ctor
== NULL
|| ctor
->expr
== NULL
)
7615 gcc_assert (init
->expr_type
== EXPR_STRUCTURE
);
7617 /* If we have an 'initialize all' constructor, do it first. */
7618 if (ctor
->expr
->expr_type
== EXPR_NULL
)
7620 tree union_type
= TREE_TYPE (un
->backend_decl
);
7621 tree val
= build_constructor (union_type
, NULL
);
7622 CONSTRUCTOR_APPEND_ELT (v
, un
->backend_decl
, val
);
7623 ctor
= gfc_constructor_next (ctor
);
7626 /* Add the map initializer on top. */
7627 if (ctor
!= NULL
&& ctor
->expr
!= NULL
)
7629 gcc_assert (ctor
->expr
->expr_type
== EXPR_STRUCTURE
);
7630 tree val
= gfc_conv_initializer (ctor
->expr
, &un
->ts
,
7631 TREE_TYPE (un
->backend_decl
),
7632 un
->attr
.dimension
, un
->attr
.pointer
,
7633 un
->attr
.proc_pointer
);
7634 CONSTRUCTOR_APPEND_ELT (v
, un
->backend_decl
, val
);
7638 /* Build an expression for a constructor. If init is nonzero then
7639 this is part of a static variable initializer. */
7642 gfc_conv_structure (gfc_se
* se
, gfc_expr
* expr
, int init
)
7649 vec
<constructor_elt
, va_gc
> *v
= NULL
;
7651 gcc_assert (se
->ss
== NULL
);
7652 gcc_assert (expr
->expr_type
== EXPR_STRUCTURE
);
7653 type
= gfc_typenode_for_spec (&expr
->ts
);
7657 /* Create a temporary variable and fill it in. */
7658 se
->expr
= gfc_create_var (type
, expr
->ts
.u
.derived
->name
);
7659 /* The symtree in expr is NULL, if the code to generate is for
7660 initializing the static members only. */
7661 tmp
= gfc_trans_structure_assign (se
->expr
, expr
, expr
->symtree
!= NULL
,
7663 gfc_add_expr_to_block (&se
->pre
, tmp
);
7667 cm
= expr
->ts
.u
.derived
->components
;
7669 for (c
= gfc_constructor_first (expr
->value
.constructor
);
7670 c
; c
= gfc_constructor_next (c
), cm
= cm
->next
)
7672 /* Skip absent members in default initializers and allocatable
7673 components. Although the latter have a default initializer
7674 of EXPR_NULL,... by default, the static nullify is not needed
7675 since this is done every time we come into scope. */
7676 if (!c
->expr
|| (cm
->attr
.allocatable
&& cm
->attr
.flavor
!= FL_PROCEDURE
))
7679 if (cm
->initializer
&& cm
->initializer
->expr_type
!= EXPR_NULL
7680 && strcmp (cm
->name
, "_extends") == 0
7681 && cm
->initializer
->symtree
)
7685 vtabs
= cm
->initializer
->symtree
->n
.sym
;
7686 vtab
= gfc_build_addr_expr (NULL_TREE
, gfc_get_symbol_decl (vtabs
));
7687 vtab
= unshare_expr_without_location (vtab
);
7688 CONSTRUCTOR_APPEND_ELT (v
, cm
->backend_decl
, vtab
);
7690 else if (cm
->ts
.u
.derived
&& strcmp (cm
->name
, "_size") == 0)
7692 val
= TYPE_SIZE_UNIT (gfc_get_derived_type (cm
->ts
.u
.derived
));
7693 CONSTRUCTOR_APPEND_ELT (v
, cm
->backend_decl
,
7694 fold_convert (TREE_TYPE (cm
->backend_decl
),
7697 else if (cm
->ts
.type
== BT_INTEGER
&& strcmp (cm
->name
, "_len") == 0)
7698 CONSTRUCTOR_APPEND_ELT (v
, cm
->backend_decl
,
7699 fold_convert (TREE_TYPE (cm
->backend_decl
),
7700 integer_zero_node
));
7701 else if (cm
->ts
.type
== BT_UNION
)
7702 gfc_conv_union_initializer (v
, cm
, c
->expr
);
7705 val
= gfc_conv_initializer (c
->expr
, &cm
->ts
,
7706 TREE_TYPE (cm
->backend_decl
),
7707 cm
->attr
.dimension
, cm
->attr
.pointer
,
7708 cm
->attr
.proc_pointer
);
7709 val
= unshare_expr_without_location (val
);
7711 /* Append it to the constructor list. */
7712 CONSTRUCTOR_APPEND_ELT (v
, cm
->backend_decl
, val
);
7716 se
->expr
= build_constructor (type
, v
);
7718 TREE_CONSTANT (se
->expr
) = 1;
7722 /* Translate a substring expression. */
7725 gfc_conv_substring_expr (gfc_se
* se
, gfc_expr
* expr
)
7731 gcc_assert (ref
== NULL
|| ref
->type
== REF_SUBSTRING
);
7733 se
->expr
= gfc_build_wide_string_const (expr
->ts
.kind
,
7734 expr
->value
.character
.length
,
7735 expr
->value
.character
.string
);
7737 se
->string_length
= TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (se
->expr
)));
7738 TYPE_STRING_FLAG (TREE_TYPE (se
->expr
)) = 1;
7741 gfc_conv_substring (se
, ref
, expr
->ts
.kind
, NULL
, &expr
->where
);
7745 /* Entry point for expression translation. Evaluates a scalar quantity.
7746 EXPR is the expression to be translated, and SE is the state structure if
7747 called from within the scalarized. */
7750 gfc_conv_expr (gfc_se
* se
, gfc_expr
* expr
)
7755 if (ss
&& ss
->info
->expr
== expr
7756 && (ss
->info
->type
== GFC_SS_SCALAR
7757 || ss
->info
->type
== GFC_SS_REFERENCE
))
7759 gfc_ss_info
*ss_info
;
7762 /* Substitute a scalar expression evaluated outside the scalarization
7764 se
->expr
= ss_info
->data
.scalar
.value
;
7765 if (gfc_scalar_elemental_arg_saved_as_reference (ss_info
))
7766 se
->expr
= build_fold_indirect_ref_loc (input_location
, se
->expr
);
7768 se
->string_length
= ss_info
->string_length
;
7769 gfc_advance_se_ss_chain (se
);
7773 /* We need to convert the expressions for the iso_c_binding derived types.
7774 C_NULL_PTR and C_NULL_FUNPTR will be made EXPR_NULL, which evaluates to
7775 null_pointer_node. C_PTR and C_FUNPTR are converted to match the
7776 typespec for the C_PTR and C_FUNPTR symbols, which has already been
7777 updated to be an integer with a kind equal to the size of a (void *). */
7778 if (expr
->ts
.type
== BT_DERIVED
&& expr
->ts
.u
.derived
->ts
.f90_type
== BT_VOID
7779 && expr
->ts
.u
.derived
->attr
.is_bind_c
)
7781 if (expr
->expr_type
== EXPR_VARIABLE
7782 && (expr
->symtree
->n
.sym
->intmod_sym_id
== ISOCBINDING_NULL_PTR
7783 || expr
->symtree
->n
.sym
->intmod_sym_id
7784 == ISOCBINDING_NULL_FUNPTR
))
7786 /* Set expr_type to EXPR_NULL, which will result in
7787 null_pointer_node being used below. */
7788 expr
->expr_type
= EXPR_NULL
;
7792 /* Update the type/kind of the expression to be what the new
7793 type/kind are for the updated symbols of C_PTR/C_FUNPTR. */
7794 expr
->ts
.type
= BT_INTEGER
;
7795 expr
->ts
.f90_type
= BT_VOID
;
7796 expr
->ts
.kind
= gfc_index_integer_kind
;
7800 gfc_fix_class_refs (expr
);
7802 switch (expr
->expr_type
)
7805 gfc_conv_expr_op (se
, expr
);
7809 gfc_conv_function_expr (se
, expr
);
7813 gfc_conv_constant (se
, expr
);
7817 gfc_conv_variable (se
, expr
);
7821 se
->expr
= null_pointer_node
;
7824 case EXPR_SUBSTRING
:
7825 gfc_conv_substring_expr (se
, expr
);
7828 case EXPR_STRUCTURE
:
7829 gfc_conv_structure (se
, expr
, 0);
7833 gfc_conv_array_constructor_expr (se
, expr
);
7842 /* Like gfc_conv_expr_val, but the value is also suitable for use in the lhs
7843 of an assignment. */
7845 gfc_conv_expr_lhs (gfc_se
* se
, gfc_expr
* expr
)
7847 gfc_conv_expr (se
, expr
);
7848 /* All numeric lvalues should have empty post chains. If not we need to
7849 figure out a way of rewriting an lvalue so that it has no post chain. */
7850 gcc_assert (expr
->ts
.type
== BT_CHARACTER
|| !se
->post
.head
);
7853 /* Like gfc_conv_expr, but the POST block is guaranteed to be empty for
7854 numeric expressions. Used for scalar values where inserting cleanup code
7857 gfc_conv_expr_val (gfc_se
* se
, gfc_expr
* expr
)
7861 gcc_assert (expr
->ts
.type
!= BT_CHARACTER
);
7862 gfc_conv_expr (se
, expr
);
7865 val
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
7866 gfc_add_modify (&se
->pre
, val
, se
->expr
);
7868 gfc_add_block_to_block (&se
->pre
, &se
->post
);
7872 /* Helper to translate an expression and convert it to a particular type. */
7874 gfc_conv_expr_type (gfc_se
* se
, gfc_expr
* expr
, tree type
)
7876 gfc_conv_expr_val (se
, expr
);
7877 se
->expr
= convert (type
, se
->expr
);
7881 /* Converts an expression so that it can be passed by reference. Scalar
7885 gfc_conv_expr_reference (gfc_se
* se
, gfc_expr
* expr
)
7891 if (ss
&& ss
->info
->expr
== expr
7892 && ss
->info
->type
== GFC_SS_REFERENCE
)
7894 /* Returns a reference to the scalar evaluated outside the loop
7896 gfc_conv_expr (se
, expr
);
7898 if (expr
->ts
.type
== BT_CHARACTER
7899 && expr
->expr_type
!= EXPR_FUNCTION
)
7900 gfc_conv_string_parameter (se
);
7902 se
->expr
= gfc_build_addr_expr (NULL_TREE
, se
->expr
);
7907 if (expr
->ts
.type
== BT_CHARACTER
)
7909 gfc_conv_expr (se
, expr
);
7910 gfc_conv_string_parameter (se
);
7914 if (expr
->expr_type
== EXPR_VARIABLE
)
7916 se
->want_pointer
= 1;
7917 gfc_conv_expr (se
, expr
);
7920 var
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
7921 gfc_add_modify (&se
->pre
, var
, se
->expr
);
7922 gfc_add_block_to_block (&se
->pre
, &se
->post
);
7928 if (expr
->expr_type
== EXPR_FUNCTION
7929 && ((expr
->value
.function
.esym
7930 && expr
->value
.function
.esym
->result
->attr
.pointer
7931 && !expr
->value
.function
.esym
->result
->attr
.dimension
)
7932 || (!expr
->value
.function
.esym
&& !expr
->ref
7933 && expr
->symtree
->n
.sym
->attr
.pointer
7934 && !expr
->symtree
->n
.sym
->attr
.dimension
)))
7936 se
->want_pointer
= 1;
7937 gfc_conv_expr (se
, expr
);
7938 var
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
7939 gfc_add_modify (&se
->pre
, var
, se
->expr
);
7944 gfc_conv_expr (se
, expr
);
7946 /* Create a temporary var to hold the value. */
7947 if (TREE_CONSTANT (se
->expr
))
7949 tree tmp
= se
->expr
;
7950 STRIP_TYPE_NOPS (tmp
);
7951 var
= build_decl (input_location
,
7952 CONST_DECL
, NULL
, TREE_TYPE (tmp
));
7953 DECL_INITIAL (var
) = tmp
;
7954 TREE_STATIC (var
) = 1;
7959 var
= gfc_create_var (TREE_TYPE (se
->expr
), NULL
);
7960 gfc_add_modify (&se
->pre
, var
, se
->expr
);
7962 gfc_add_block_to_block (&se
->pre
, &se
->post
);
7964 /* Take the address of that value. */
7965 se
->expr
= gfc_build_addr_expr (NULL_TREE
, var
);
7969 /* Get the _len component for an unlimited polymorphic expression. */
7972 trans_get_upoly_len (stmtblock_t
*block
, gfc_expr
*expr
)
7975 gfc_ref
*ref
= expr
->ref
;
7977 gfc_init_se (&se
, NULL
);
7978 while (ref
&& ref
->next
)
7980 gfc_add_len_component (expr
);
7981 gfc_conv_expr (&se
, expr
);
7982 gfc_add_block_to_block (block
, &se
.pre
);
7983 gcc_assert (se
.post
.head
== NULL_TREE
);
7986 gfc_free_ref_list (ref
->next
);
7991 gfc_free_ref_list (expr
->ref
);
7998 /* Assign _vptr and _len components as appropriate. BLOCK should be a
7999 statement-list outside of the scalarizer-loop. When code is generated, that
8000 depends on the scalarized expression, it is added to RSE.PRE.
8001 Returns le's _vptr tree and when set the len expressions in to_lenp and
8002 from_lenp to form a le%_vptr%_copy (re, le, [from_lenp, to_lenp])
8006 trans_class_vptr_len_assignment (stmtblock_t
*block
, gfc_expr
* le
,
8007 gfc_expr
* re
, gfc_se
*rse
,
8008 tree
* to_lenp
, tree
* from_lenp
)
8011 gfc_expr
* vptr_expr
;
8012 tree tmp
, to_len
= NULL_TREE
, from_len
= NULL_TREE
, lhs_vptr
;
8013 bool set_vptr
= false, temp_rhs
= false;
8014 stmtblock_t
*pre
= block
;
8016 /* Create a temporary for complicated expressions. */
8017 if (re
->expr_type
!= EXPR_VARIABLE
&& re
->expr_type
!= EXPR_NULL
8018 && rse
->expr
!= NULL_TREE
&& !DECL_P (rse
->expr
))
8020 tmp
= gfc_create_var (TREE_TYPE (rse
->expr
), "rhs");
8022 gfc_add_modify (&rse
->pre
, tmp
, rse
->expr
);
8027 /* Get the _vptr for the left-hand side expression. */
8028 gfc_init_se (&se
, NULL
);
8029 vptr_expr
= gfc_find_and_cut_at_last_class_ref (le
);
8030 if (vptr_expr
!= NULL
&& gfc_expr_attr (vptr_expr
).class_ok
)
8032 /* Care about _len for unlimited polymorphic entities. */
8033 if (UNLIMITED_POLY (vptr_expr
)
8034 || (vptr_expr
->ts
.type
== BT_DERIVED
8035 && vptr_expr
->ts
.u
.derived
->attr
.unlimited_polymorphic
))
8036 to_len
= trans_get_upoly_len (block
, vptr_expr
);
8037 gfc_add_vptr_component (vptr_expr
);
8041 vptr_expr
= gfc_lval_expr_from_sym (gfc_find_vtab (&le
->ts
));
8042 se
.want_pointer
= 1;
8043 gfc_conv_expr (&se
, vptr_expr
);
8044 gfc_free_expr (vptr_expr
);
8045 gfc_add_block_to_block (block
, &se
.pre
);
8046 gcc_assert (se
.post
.head
== NULL_TREE
);
8048 STRIP_NOPS (lhs_vptr
);
8050 /* Set the _vptr only when the left-hand side of the assignment is a
8054 /* Get the vptr from the rhs expression only, when it is variable.
8055 Functions are expected to be assigned to a temporary beforehand. */
8056 vptr_expr
= re
->expr_type
== EXPR_VARIABLE
8057 ? gfc_find_and_cut_at_last_class_ref (re
)
8059 if (vptr_expr
!= NULL
&& vptr_expr
->ts
.type
== BT_CLASS
)
8061 if (to_len
!= NULL_TREE
)
8063 /* Get the _len information from the rhs. */
8064 if (UNLIMITED_POLY (vptr_expr
)
8065 || (vptr_expr
->ts
.type
== BT_DERIVED
8066 && vptr_expr
->ts
.u
.derived
->attr
.unlimited_polymorphic
))
8067 from_len
= trans_get_upoly_len (block
, vptr_expr
);
8069 gfc_add_vptr_component (vptr_expr
);
8073 if (re
->expr_type
== EXPR_VARIABLE
8074 && DECL_P (re
->symtree
->n
.sym
->backend_decl
)
8075 && DECL_LANG_SPECIFIC (re
->symtree
->n
.sym
->backend_decl
)
8076 && GFC_DECL_SAVED_DESCRIPTOR (re
->symtree
->n
.sym
->backend_decl
)
8077 && GFC_CLASS_TYPE_P (TREE_TYPE (GFC_DECL_SAVED_DESCRIPTOR (
8078 re
->symtree
->n
.sym
->backend_decl
))))
8081 se
.expr
= gfc_class_vptr_get (GFC_DECL_SAVED_DESCRIPTOR (
8082 re
->symtree
->n
.sym
->backend_decl
));
8084 from_len
= gfc_class_len_get (GFC_DECL_SAVED_DESCRIPTOR (
8085 re
->symtree
->n
.sym
->backend_decl
));
8087 else if (temp_rhs
&& re
->ts
.type
== BT_CLASS
)
8090 se
.expr
= gfc_class_vptr_get (rse
->expr
);
8092 else if (re
->expr_type
!= EXPR_NULL
)
8093 /* Only when rhs is non-NULL use its declared type for vptr
8095 vptr_expr
= gfc_lval_expr_from_sym (gfc_find_vtab (&re
->ts
));
8097 /* When the rhs is NULL use the vtab of lhs' declared type. */
8098 vptr_expr
= gfc_lval_expr_from_sym (gfc_find_vtab (&le
->ts
));
8103 gfc_init_se (&se
, NULL
);
8104 se
.want_pointer
= 1;
8105 gfc_conv_expr (&se
, vptr_expr
);
8106 gfc_free_expr (vptr_expr
);
8107 gfc_add_block_to_block (block
, &se
.pre
);
8108 gcc_assert (se
.post
.head
== NULL_TREE
);
8110 gfc_add_modify (pre
, lhs_vptr
, fold_convert (TREE_TYPE (lhs_vptr
),
8113 if (to_len
!= NULL_TREE
)
8115 /* The _len component needs to be set. Figure how to get the
8116 value of the right-hand side. */
8117 if (from_len
== NULL_TREE
)
8119 if (rse
->string_length
!= NULL_TREE
)
8120 from_len
= rse
->string_length
;
8121 else if (re
->ts
.type
== BT_CHARACTER
&& re
->ts
.u
.cl
->length
)
8123 from_len
= gfc_get_expr_charlen (re
);
8124 gfc_init_se (&se
, NULL
);
8125 gfc_conv_expr (&se
, re
->ts
.u
.cl
->length
);
8126 gfc_add_block_to_block (block
, &se
.pre
);
8127 gcc_assert (se
.post
.head
== NULL_TREE
);
8128 from_len
= gfc_evaluate_now (se
.expr
, block
);
8131 from_len
= integer_zero_node
;
8133 gfc_add_modify (pre
, to_len
, fold_convert (TREE_TYPE (to_len
),
8138 /* Return the _len trees only, when requested. */
8142 *from_lenp
= from_len
;
8147 /* Assign tokens for pointer components. */
8150 trans_caf_token_assign (gfc_se
*lse
, gfc_se
*rse
, gfc_expr
*expr1
,
8153 symbol_attribute lhs_attr
, rhs_attr
;
8154 tree tmp
, lhs_tok
, rhs_tok
;
8155 /* Flag to indicated component refs on the rhs. */
8158 lhs_attr
= gfc_caf_attr (expr1
);
8159 if (expr2
->expr_type
!= EXPR_NULL
)
8161 rhs_attr
= gfc_caf_attr (expr2
, false, &rhs_cr
);
8162 if (lhs_attr
.codimension
&& rhs_attr
.codimension
)
8164 lhs_tok
= gfc_get_ultimate_alloc_ptr_comps_caf_token (lse
, expr1
);
8165 lhs_tok
= build_fold_indirect_ref (lhs_tok
);
8168 rhs_tok
= gfc_get_ultimate_alloc_ptr_comps_caf_token (rse
, expr2
);
8172 caf_decl
= gfc_get_tree_for_caf_expr (expr2
);
8173 gfc_get_caf_token_offset (rse
, &rhs_tok
, NULL
, caf_decl
,
8176 tmp
= build2_loc (input_location
, MODIFY_EXPR
, void_type_node
,
8178 fold_convert (TREE_TYPE (lhs_tok
), rhs_tok
));
8179 gfc_prepend_expr_to_block (&lse
->post
, tmp
);
8182 else if (lhs_attr
.codimension
)
8184 lhs_tok
= gfc_get_ultimate_alloc_ptr_comps_caf_token (lse
, expr1
);
8185 lhs_tok
= build_fold_indirect_ref (lhs_tok
);
8186 tmp
= build2_loc (input_location
, MODIFY_EXPR
, void_type_node
,
8187 lhs_tok
, null_pointer_node
);
8188 gfc_prepend_expr_to_block (&lse
->post
, tmp
);
8192 /* Indentify class valued proc_pointer assignments. */
8195 pointer_assignment_is_proc_pointer (gfc_expr
* expr1
, gfc_expr
* expr2
)
8200 while (ref
&& ref
->next
)
8203 return ref
&& ref
->type
== REF_COMPONENT
8204 && ref
->u
.c
.component
->attr
.proc_pointer
8205 && expr2
->expr_type
== EXPR_VARIABLE
8206 && expr2
->symtree
->n
.sym
->attr
.flavor
== FL_PROCEDURE
;
8211 gfc_trans_pointer_assign (gfc_code
* code
)
8213 return gfc_trans_pointer_assignment (code
->expr1
, code
->expr2
);
8217 /* Generate code for a pointer assignment. */
8220 gfc_trans_pointer_assignment (gfc_expr
* expr1
, gfc_expr
* expr2
)
8227 bool scalar
, non_proc_pointer_assign
;
8230 gfc_start_block (&block
);
8232 gfc_init_se (&lse
, NULL
);
8234 /* Usually testing whether this is not a proc pointer assignment. */
8235 non_proc_pointer_assign
= !pointer_assignment_is_proc_pointer (expr1
, expr2
);
8237 /* Check whether the expression is a scalar or not; we cannot use
8238 expr1->rank as it can be nonzero for proc pointers. */
8239 ss
= gfc_walk_expr (expr1
);
8240 scalar
= ss
== gfc_ss_terminator
;
8242 gfc_free_ss_chain (ss
);
8244 if (expr1
->ts
.type
== BT_DERIVED
&& expr2
->ts
.type
== BT_CLASS
8245 && expr2
->expr_type
!= EXPR_FUNCTION
&& non_proc_pointer_assign
)
8247 gfc_add_data_component (expr2
);
8248 /* The following is required as gfc_add_data_component doesn't
8249 update ts.type if there is a tailing REF_ARRAY. */
8250 expr2
->ts
.type
= BT_DERIVED
;
8255 /* Scalar pointers. */
8256 lse
.want_pointer
= 1;
8257 gfc_conv_expr (&lse
, expr1
);
8258 gfc_init_se (&rse
, NULL
);
8259 rse
.want_pointer
= 1;
8260 gfc_conv_expr (&rse
, expr2
);
8262 if (non_proc_pointer_assign
&& expr1
->ts
.type
== BT_CLASS
)
8264 trans_class_vptr_len_assignment (&block
, expr1
, expr2
, &rse
, NULL
,
8266 lse
.expr
= gfc_class_data_get (lse
.expr
);
8269 if (expr1
->symtree
->n
.sym
->attr
.proc_pointer
8270 && expr1
->symtree
->n
.sym
->attr
.dummy
)
8271 lse
.expr
= build_fold_indirect_ref_loc (input_location
,
8274 if (expr2
->symtree
&& expr2
->symtree
->n
.sym
->attr
.proc_pointer
8275 && expr2
->symtree
->n
.sym
->attr
.dummy
)
8276 rse
.expr
= build_fold_indirect_ref_loc (input_location
,
8279 gfc_add_block_to_block (&block
, &lse
.pre
);
8280 gfc_add_block_to_block (&block
, &rse
.pre
);
8282 /* Check character lengths if character expression. The test is only
8283 really added if -fbounds-check is enabled. Exclude deferred
8284 character length lefthand sides. */
8285 if (expr1
->ts
.type
== BT_CHARACTER
&& expr2
->expr_type
!= EXPR_NULL
8286 && !expr1
->ts
.deferred
8287 && !expr1
->symtree
->n
.sym
->attr
.proc_pointer
8288 && !gfc_is_proc_ptr_comp (expr1
))
8290 gcc_assert (expr2
->ts
.type
== BT_CHARACTER
);
8291 gcc_assert (lse
.string_length
&& rse
.string_length
);
8292 gfc_trans_same_strlen_check ("pointer assignment", &expr1
->where
,
8293 lse
.string_length
, rse
.string_length
,
8297 /* The assignment to an deferred character length sets the string
8298 length to that of the rhs. */
8299 if (expr1
->ts
.deferred
)
8301 if (expr2
->expr_type
!= EXPR_NULL
&& lse
.string_length
!= NULL
)
8302 gfc_add_modify (&block
, lse
.string_length
, rse
.string_length
);
8303 else if (lse
.string_length
!= NULL
)
8304 gfc_add_modify (&block
, lse
.string_length
,
8305 build_int_cst (gfc_charlen_type_node
, 0));
8308 gfc_add_modify (&block
, lse
.expr
,
8309 fold_convert (TREE_TYPE (lse
.expr
), rse
.expr
));
8311 /* Also set the tokens for pointer components in derived typed
8313 if (flag_coarray
== GFC_FCOARRAY_LIB
)
8314 trans_caf_token_assign (&lse
, &rse
, expr1
, expr2
);
8316 gfc_add_block_to_block (&block
, &rse
.post
);
8317 gfc_add_block_to_block (&block
, &lse
.post
);
8323 tree expr1_vptr
= NULL_TREE
;
8325 tree strlen_rhs
= NULL_TREE
;
8327 /* Array pointer. Find the last reference on the LHS and if it is an
8328 array section ref, we're dealing with bounds remapping. In this case,
8329 set it to AR_FULL so that gfc_conv_expr_descriptor does
8330 not see it and process the bounds remapping afterwards explicitly. */
8331 for (remap
= expr1
->ref
; remap
; remap
= remap
->next
)
8332 if (!remap
->next
&& remap
->type
== REF_ARRAY
8333 && remap
->u
.ar
.type
== AR_SECTION
)
8335 rank_remap
= (remap
&& remap
->u
.ar
.end
[0]);
8337 gfc_init_se (&lse
, NULL
);
8339 lse
.descriptor_only
= 1;
8340 gfc_conv_expr_descriptor (&lse
, expr1
);
8341 strlen_lhs
= lse
.string_length
;
8344 if (expr2
->expr_type
== EXPR_NULL
)
8346 /* Just set the data pointer to null. */
8347 gfc_conv_descriptor_data_set (&lse
.pre
, lse
.expr
, null_pointer_node
);
8349 else if (rank_remap
)
8351 /* If we are rank-remapping, just get the RHS's descriptor and
8352 process this later on. */
8353 gfc_init_se (&rse
, NULL
);
8354 rse
.direct_byref
= 1;
8355 rse
.byref_noassign
= 1;
8357 if (expr2
->expr_type
== EXPR_FUNCTION
&& expr2
->ts
.type
== BT_CLASS
)
8359 gfc_conv_function_expr (&rse
, expr2
);
8361 if (expr1
->ts
.type
!= BT_CLASS
)
8362 rse
.expr
= gfc_class_data_get (rse
.expr
);
8365 expr1_vptr
= trans_class_vptr_len_assignment (&block
, expr1
,
8368 gfc_add_block_to_block (&block
, &rse
.pre
);
8369 tmp
= gfc_create_var (TREE_TYPE (rse
.expr
), "ptrtemp");
8370 gfc_add_modify (&lse
.pre
, tmp
, rse
.expr
);
8372 gfc_add_modify (&lse
.pre
, expr1_vptr
,
8373 fold_convert (TREE_TYPE (expr1_vptr
),
8374 gfc_class_vptr_get (tmp
)));
8375 rse
.expr
= gfc_class_data_get (tmp
);
8378 else if (expr2
->expr_type
== EXPR_FUNCTION
)
8380 tree bound
[GFC_MAX_DIMENSIONS
];
8383 for (i
= 0; i
< expr2
->rank
; i
++)
8384 bound
[i
] = NULL_TREE
;
8385 tmp
= gfc_typenode_for_spec (&expr2
->ts
);
8386 tmp
= gfc_get_array_type_bounds (tmp
, expr2
->rank
, 0,
8388 GFC_ARRAY_POINTER_CONT
, false);
8389 tmp
= gfc_create_var (tmp
, "ptrtemp");
8390 rse
.descriptor_only
= 0;
8392 rse
.direct_byref
= 1;
8393 gfc_conv_expr_descriptor (&rse
, expr2
);
8394 strlen_rhs
= rse
.string_length
;
8399 gfc_conv_expr_descriptor (&rse
, expr2
);
8400 strlen_rhs
= rse
.string_length
;
8401 if (expr1
->ts
.type
== BT_CLASS
)
8402 expr1_vptr
= trans_class_vptr_len_assignment (&block
, expr1
,
8407 else if (expr2
->expr_type
== EXPR_VARIABLE
)
8409 /* Assign directly to the LHS's descriptor. */
8410 lse
.descriptor_only
= 0;
8411 lse
.direct_byref
= 1;
8412 gfc_conv_expr_descriptor (&lse
, expr2
);
8413 strlen_rhs
= lse
.string_length
;
8415 if (expr1
->ts
.type
== BT_CLASS
)
8417 rse
.expr
= NULL_TREE
;
8418 rse
.string_length
= NULL_TREE
;
8419 trans_class_vptr_len_assignment (&block
, expr1
, expr2
, &rse
,
8425 /* If the target is not a whole array, use the target array
8426 reference for remap. */
8427 for (remap
= expr2
->ref
; remap
; remap
= remap
->next
)
8428 if (remap
->type
== REF_ARRAY
8429 && remap
->u
.ar
.type
== AR_FULL
8434 else if (expr2
->expr_type
== EXPR_FUNCTION
&& expr2
->ts
.type
== BT_CLASS
)
8436 gfc_init_se (&rse
, NULL
);
8437 rse
.want_pointer
= 1;
8438 gfc_conv_function_expr (&rse
, expr2
);
8439 if (expr1
->ts
.type
!= BT_CLASS
)
8441 rse
.expr
= gfc_class_data_get (rse
.expr
);
8442 gfc_add_modify (&lse
.pre
, desc
, rse
.expr
);
8443 /* Set the lhs span. */
8444 tmp
= TREE_TYPE (rse
.expr
);
8445 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (tmp
));
8446 tmp
= fold_convert (gfc_array_index_type
, tmp
);
8447 gfc_conv_descriptor_span_set (&lse
.pre
, desc
, tmp
);
8451 expr1_vptr
= trans_class_vptr_len_assignment (&block
, expr1
,
8454 gfc_add_block_to_block (&block
, &rse
.pre
);
8455 tmp
= gfc_create_var (TREE_TYPE (rse
.expr
), "ptrtemp");
8456 gfc_add_modify (&lse
.pre
, tmp
, rse
.expr
);
8458 gfc_add_modify (&lse
.pre
, expr1_vptr
,
8459 fold_convert (TREE_TYPE (expr1_vptr
),
8460 gfc_class_vptr_get (tmp
)));
8461 rse
.expr
= gfc_class_data_get (tmp
);
8462 gfc_add_modify (&lse
.pre
, desc
, rse
.expr
);
8467 /* Assign to a temporary descriptor and then copy that
8468 temporary to the pointer. */
8469 tmp
= gfc_create_var (TREE_TYPE (desc
), "ptrtemp");
8470 lse
.descriptor_only
= 0;
8472 lse
.direct_byref
= 1;
8473 gfc_conv_expr_descriptor (&lse
, expr2
);
8474 strlen_rhs
= lse
.string_length
;
8475 gfc_add_modify (&lse
.pre
, desc
, tmp
);
8478 gfc_add_block_to_block (&block
, &lse
.pre
);
8480 gfc_add_block_to_block (&block
, &rse
.pre
);
8482 /* If we do bounds remapping, update LHS descriptor accordingly. */
8486 gcc_assert (remap
->u
.ar
.dimen
== expr1
->rank
);
8490 /* Do rank remapping. We already have the RHS's descriptor
8491 converted in rse and now have to build the correct LHS
8492 descriptor for it. */
8494 tree dtype
, data
, span
;
8496 tree lbound
, ubound
;
8499 dtype
= gfc_conv_descriptor_dtype (desc
);
8500 tmp
= gfc_get_dtype (TREE_TYPE (desc
));
8501 gfc_add_modify (&block
, dtype
, tmp
);
8503 /* Copy data pointer. */
8504 data
= gfc_conv_descriptor_data_get (rse
.expr
);
8505 gfc_conv_descriptor_data_set (&block
, desc
, data
);
8507 /* Copy the span. */
8508 if (TREE_CODE (rse
.expr
) == VAR_DECL
8509 && GFC_DECL_PTR_ARRAY_P (rse
.expr
))
8510 span
= gfc_conv_descriptor_span_get (rse
.expr
);
8513 tmp
= TREE_TYPE (rse
.expr
);
8514 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (tmp
));
8515 span
= fold_convert (gfc_array_index_type
, tmp
);
8517 gfc_conv_descriptor_span_set (&block
, desc
, span
);
8519 /* Copy offset but adjust it such that it would correspond
8520 to a lbound of zero. */
8521 offs
= gfc_conv_descriptor_offset_get (rse
.expr
);
8522 for (dim
= 0; dim
< expr2
->rank
; ++dim
)
8524 stride
= gfc_conv_descriptor_stride_get (rse
.expr
,
8526 lbound
= gfc_conv_descriptor_lbound_get (rse
.expr
,
8528 tmp
= fold_build2_loc (input_location
, MULT_EXPR
,
8529 gfc_array_index_type
, stride
, lbound
);
8530 offs
= fold_build2_loc (input_location
, PLUS_EXPR
,
8531 gfc_array_index_type
, offs
, tmp
);
8533 gfc_conv_descriptor_offset_set (&block
, desc
, offs
);
8535 /* Set the bounds as declared for the LHS and calculate strides as
8536 well as another offset update accordingly. */
8537 stride
= gfc_conv_descriptor_stride_get (rse
.expr
,
8539 for (dim
= 0; dim
< expr1
->rank
; ++dim
)
8544 gcc_assert (remap
->u
.ar
.start
[dim
] && remap
->u
.ar
.end
[dim
]);
8546 /* Convert declared bounds. */
8547 gfc_init_se (&lower_se
, NULL
);
8548 gfc_init_se (&upper_se
, NULL
);
8549 gfc_conv_expr (&lower_se
, remap
->u
.ar
.start
[dim
]);
8550 gfc_conv_expr (&upper_se
, remap
->u
.ar
.end
[dim
]);
8552 gfc_add_block_to_block (&block
, &lower_se
.pre
);
8553 gfc_add_block_to_block (&block
, &upper_se
.pre
);
8555 lbound
= fold_convert (gfc_array_index_type
, lower_se
.expr
);
8556 ubound
= fold_convert (gfc_array_index_type
, upper_se
.expr
);
8558 lbound
= gfc_evaluate_now (lbound
, &block
);
8559 ubound
= gfc_evaluate_now (ubound
, &block
);
8561 gfc_add_block_to_block (&block
, &lower_se
.post
);
8562 gfc_add_block_to_block (&block
, &upper_se
.post
);
8564 /* Set bounds in descriptor. */
8565 gfc_conv_descriptor_lbound_set (&block
, desc
,
8566 gfc_rank_cst
[dim
], lbound
);
8567 gfc_conv_descriptor_ubound_set (&block
, desc
,
8568 gfc_rank_cst
[dim
], ubound
);
8571 stride
= gfc_evaluate_now (stride
, &block
);
8572 gfc_conv_descriptor_stride_set (&block
, desc
,
8573 gfc_rank_cst
[dim
], stride
);
8575 /* Update offset. */
8576 offs
= gfc_conv_descriptor_offset_get (desc
);
8577 tmp
= fold_build2_loc (input_location
, MULT_EXPR
,
8578 gfc_array_index_type
, lbound
, stride
);
8579 offs
= fold_build2_loc (input_location
, MINUS_EXPR
,
8580 gfc_array_index_type
, offs
, tmp
);
8581 offs
= gfc_evaluate_now (offs
, &block
);
8582 gfc_conv_descriptor_offset_set (&block
, desc
, offs
);
8584 /* Update stride. */
8585 tmp
= gfc_conv_array_extent_dim (lbound
, ubound
, NULL
);
8586 stride
= fold_build2_loc (input_location
, MULT_EXPR
,
8587 gfc_array_index_type
, stride
, tmp
);
8592 /* Bounds remapping. Just shift the lower bounds. */
8594 gcc_assert (expr1
->rank
== expr2
->rank
);
8596 for (dim
= 0; dim
< remap
->u
.ar
.dimen
; ++dim
)
8600 gcc_assert (!remap
->u
.ar
.end
[dim
]);
8601 gfc_init_se (&lbound_se
, NULL
);
8602 if (remap
->u
.ar
.start
[dim
])
8604 gfc_conv_expr (&lbound_se
, remap
->u
.ar
.start
[dim
]);
8605 gfc_add_block_to_block (&block
, &lbound_se
.pre
);
8608 /* This remap arises from a target that is not a whole
8609 array. The start expressions will be NULL but we need
8610 the lbounds to be one. */
8611 lbound_se
.expr
= gfc_index_one_node
;
8612 gfc_conv_shift_descriptor_lbound (&block
, desc
,
8613 dim
, lbound_se
.expr
);
8614 gfc_add_block_to_block (&block
, &lbound_se
.post
);
8619 /* Check string lengths if applicable. The check is only really added
8620 to the output code if -fbounds-check is enabled. */
8621 if (expr1
->ts
.type
== BT_CHARACTER
&& expr2
->expr_type
!= EXPR_NULL
)
8623 gcc_assert (expr2
->ts
.type
== BT_CHARACTER
);
8624 gcc_assert (strlen_lhs
&& strlen_rhs
);
8625 gfc_trans_same_strlen_check ("pointer assignment", &expr1
->where
,
8626 strlen_lhs
, strlen_rhs
, &block
);
8629 /* If rank remapping was done, check with -fcheck=bounds that
8630 the target is at least as large as the pointer. */
8631 if (rank_remap
&& (gfc_option
.rtcheck
& GFC_RTCHECK_BOUNDS
))
8637 lsize
= gfc_conv_descriptor_size (lse
.expr
, expr1
->rank
);
8638 rsize
= gfc_conv_descriptor_size (rse
.expr
, expr2
->rank
);
8640 lsize
= gfc_evaluate_now (lsize
, &block
);
8641 rsize
= gfc_evaluate_now (rsize
, &block
);
8642 fault
= fold_build2_loc (input_location
, LT_EXPR
, boolean_type_node
,
8645 msg
= _("Target of rank remapping is too small (%ld < %ld)");
8646 gfc_trans_runtime_check (true, false, fault
, &block
, &expr2
->where
,
8650 gfc_add_block_to_block (&block
, &lse
.post
);
8652 gfc_add_block_to_block (&block
, &rse
.post
);
8655 return gfc_finish_block (&block
);
8659 /* Makes sure se is suitable for passing as a function string parameter. */
8660 /* TODO: Need to check all callers of this function. It may be abused. */
8663 gfc_conv_string_parameter (gfc_se
* se
)
8667 if (TREE_CODE (se
->expr
) == STRING_CST
)
8669 type
= TREE_TYPE (TREE_TYPE (se
->expr
));
8670 se
->expr
= gfc_build_addr_expr (build_pointer_type (type
), se
->expr
);
8674 if (TYPE_STRING_FLAG (TREE_TYPE (se
->expr
)))
8676 if (TREE_CODE (se
->expr
) != INDIRECT_REF
)
8678 type
= TREE_TYPE (se
->expr
);
8679 se
->expr
= gfc_build_addr_expr (build_pointer_type (type
), se
->expr
);
8683 type
= gfc_get_character_type_len (gfc_default_character_kind
,
8685 type
= build_pointer_type (type
);
8686 se
->expr
= gfc_build_addr_expr (type
, se
->expr
);
8690 gcc_assert (POINTER_TYPE_P (TREE_TYPE (se
->expr
)));
8694 /* Generate code for assignment of scalar variables. Includes character
8695 strings and derived types with allocatable components.
8696 If you know that the LHS has no allocations, set dealloc to false.
8698 DEEP_COPY has no effect if the typespec TS is not a derived type with
8699 allocatable components. Otherwise, if it is set, an explicit copy of each
8700 allocatable component is made. This is necessary as a simple copy of the
8701 whole object would copy array descriptors as is, so that the lhs's
8702 allocatable components would point to the rhs's after the assignment.
8703 Typically, setting DEEP_COPY is necessary if the rhs is a variable, and not
8704 necessary if the rhs is a non-pointer function, as the allocatable components
8705 are not accessible by other means than the function's result after the
8706 function has returned. It is even more subtle when temporaries are involved,
8707 as the two following examples show:
8708 1. When we evaluate an array constructor, a temporary is created. Thus
8709 there is theoretically no alias possible. However, no deep copy is
8710 made for this temporary, so that if the constructor is made of one or
8711 more variable with allocatable components, those components still point
8712 to the variable's: DEEP_COPY should be set for the assignment from the
8713 temporary to the lhs in that case.
8714 2. When assigning a scalar to an array, we evaluate the scalar value out
8715 of the loop, store it into a temporary variable, and assign from that.
8716 In that case, deep copying when assigning to the temporary would be a
8717 waste of resources; however deep copies should happen when assigning from
8718 the temporary to each array element: again DEEP_COPY should be set for
8719 the assignment from the temporary to the lhs. */
8722 gfc_trans_scalar_assign (gfc_se
* lse
, gfc_se
* rse
, gfc_typespec ts
,
8723 bool deep_copy
, bool dealloc
, bool in_coarray
)
8729 gfc_init_block (&block
);
8731 if (ts
.type
== BT_CHARACTER
)
8736 if (lse
->string_length
!= NULL_TREE
)
8738 gfc_conv_string_parameter (lse
);
8739 gfc_add_block_to_block (&block
, &lse
->pre
);
8740 llen
= lse
->string_length
;
8743 if (rse
->string_length
!= NULL_TREE
)
8745 gfc_conv_string_parameter (rse
);
8746 gfc_add_block_to_block (&block
, &rse
->pre
);
8747 rlen
= rse
->string_length
;
8750 gfc_trans_string_copy (&block
, llen
, lse
->expr
, ts
.kind
, rlen
,
8751 rse
->expr
, ts
.kind
);
8753 else if (gfc_bt_struct (ts
.type
) && ts
.u
.derived
->attr
.alloc_comp
)
8755 tree tmp_var
= NULL_TREE
;
8758 /* Are the rhs and the lhs the same? */
8761 cond
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
8762 gfc_build_addr_expr (NULL_TREE
, lse
->expr
),
8763 gfc_build_addr_expr (NULL_TREE
, rse
->expr
));
8764 cond
= gfc_evaluate_now (cond
, &lse
->pre
);
8767 /* Deallocate the lhs allocated components as long as it is not
8768 the same as the rhs. This must be done following the assignment
8769 to prevent deallocating data that could be used in the rhs
8773 tmp_var
= gfc_evaluate_now (lse
->expr
, &lse
->pre
);
8774 tmp
= gfc_deallocate_alloc_comp_no_caf (ts
.u
.derived
, tmp_var
, 0);
8776 tmp
= build3_v (COND_EXPR
, cond
, build_empty_stmt (input_location
),
8778 gfc_add_expr_to_block (&lse
->post
, tmp
);
8781 gfc_add_block_to_block (&block
, &rse
->pre
);
8782 gfc_add_block_to_block (&block
, &lse
->pre
);
8784 gfc_add_modify (&block
, lse
->expr
,
8785 fold_convert (TREE_TYPE (lse
->expr
), rse
->expr
));
8787 /* Restore pointer address of coarray components. */
8788 if (ts
.u
.derived
->attr
.coarray_comp
&& deep_copy
&& tmp_var
!= NULL_TREE
)
8790 tmp
= gfc_reassign_alloc_comp_caf (ts
.u
.derived
, tmp_var
, lse
->expr
);
8791 tmp
= build3_v (COND_EXPR
, cond
, build_empty_stmt (input_location
),
8793 gfc_add_expr_to_block (&block
, tmp
);
8796 /* Do a deep copy if the rhs is a variable, if it is not the
8800 int caf_mode
= in_coarray
? (GFC_STRUCTURE_CAF_MODE_ENABLE_COARRAY
8801 | GFC_STRUCTURE_CAF_MODE_IN_COARRAY
) : 0;
8802 tmp
= gfc_copy_alloc_comp (ts
.u
.derived
, rse
->expr
, lse
->expr
, 0,
8804 tmp
= build3_v (COND_EXPR
, cond
, build_empty_stmt (input_location
),
8806 gfc_add_expr_to_block (&block
, tmp
);
8809 else if (gfc_bt_struct (ts
.type
) || ts
.type
== BT_CLASS
)
8811 gfc_add_block_to_block (&block
, &lse
->pre
);
8812 gfc_add_block_to_block (&block
, &rse
->pre
);
8813 tmp
= fold_build1_loc (input_location
, VIEW_CONVERT_EXPR
,
8814 TREE_TYPE (lse
->expr
), rse
->expr
);
8815 gfc_add_modify (&block
, lse
->expr
, tmp
);
8819 gfc_add_block_to_block (&block
, &lse
->pre
);
8820 gfc_add_block_to_block (&block
, &rse
->pre
);
8822 gfc_add_modify (&block
, lse
->expr
,
8823 fold_convert (TREE_TYPE (lse
->expr
), rse
->expr
));
8826 gfc_add_block_to_block (&block
, &lse
->post
);
8827 gfc_add_block_to_block (&block
, &rse
->post
);
8829 return gfc_finish_block (&block
);
8833 /* There are quite a lot of restrictions on the optimisation in using an
8834 array function assign without a temporary. */
8837 arrayfunc_assign_needs_temporary (gfc_expr
* expr1
, gfc_expr
* expr2
)
8840 bool seen_array_ref
;
8842 gfc_symbol
*sym
= expr1
->symtree
->n
.sym
;
8844 /* Play it safe with class functions assigned to a derived type. */
8845 if (gfc_is_alloc_class_array_function (expr2
)
8846 && expr1
->ts
.type
== BT_DERIVED
)
8849 /* The caller has already checked rank>0 and expr_type == EXPR_FUNCTION. */
8850 if (expr2
->value
.function
.isym
&& !gfc_is_intrinsic_libcall (expr2
))
8853 /* Elemental functions are scalarized so that they don't need a
8854 temporary in gfc_trans_assignment_1, so return a true. Otherwise,
8855 they would need special treatment in gfc_trans_arrayfunc_assign. */
8856 if (expr2
->value
.function
.esym
!= NULL
8857 && expr2
->value
.function
.esym
->attr
.elemental
)
8860 /* Need a temporary if rhs is not FULL or a contiguous section. */
8861 if (expr1
->ref
&& !(gfc_full_array_ref_p (expr1
->ref
, &c
) || c
))
8864 /* Need a temporary if EXPR1 can't be expressed as a descriptor. */
8865 if (gfc_ref_needs_temporary_p (expr1
->ref
))
8868 /* Functions returning pointers or allocatables need temporaries. */
8869 c
= expr2
->value
.function
.esym
8870 ? (expr2
->value
.function
.esym
->attr
.pointer
8871 || expr2
->value
.function
.esym
->attr
.allocatable
)
8872 : (expr2
->symtree
->n
.sym
->attr
.pointer
8873 || expr2
->symtree
->n
.sym
->attr
.allocatable
);
8877 /* Character array functions need temporaries unless the
8878 character lengths are the same. */
8879 if (expr2
->ts
.type
== BT_CHARACTER
&& expr2
->rank
> 0)
8881 if (expr1
->ts
.u
.cl
->length
== NULL
8882 || expr1
->ts
.u
.cl
->length
->expr_type
!= EXPR_CONSTANT
)
8885 if (expr2
->ts
.u
.cl
->length
== NULL
8886 || expr2
->ts
.u
.cl
->length
->expr_type
!= EXPR_CONSTANT
)
8889 if (mpz_cmp (expr1
->ts
.u
.cl
->length
->value
.integer
,
8890 expr2
->ts
.u
.cl
->length
->value
.integer
) != 0)
8894 /* Check that no LHS component references appear during an array
8895 reference. This is needed because we do not have the means to
8896 span any arbitrary stride with an array descriptor. This check
8897 is not needed for the rhs because the function result has to be
8899 seen_array_ref
= false;
8900 for (ref
= expr1
->ref
; ref
; ref
= ref
->next
)
8902 if (ref
->type
== REF_ARRAY
)
8903 seen_array_ref
= true;
8904 else if (ref
->type
== REF_COMPONENT
&& seen_array_ref
)
8908 /* Check for a dependency. */
8909 if (gfc_check_fncall_dependency (expr1
, INTENT_OUT
,
8910 expr2
->value
.function
.esym
,
8911 expr2
->value
.function
.actual
,
8915 /* If we have reached here with an intrinsic function, we do not
8916 need a temporary except in the particular case that reallocation
8917 on assignment is active and the lhs is allocatable and a target. */
8918 if (expr2
->value
.function
.isym
)
8919 return (flag_realloc_lhs
&& sym
->attr
.allocatable
&& sym
->attr
.target
);
8921 /* If the LHS is a dummy, we need a temporary if it is not
8923 if (sym
->attr
.dummy
&& sym
->attr
.intent
!= INTENT_OUT
)
8926 /* If the lhs has been host_associated, is in common, a pointer or is
8927 a target and the function is not using a RESULT variable, aliasing
8928 can occur and a temporary is needed. */
8929 if ((sym
->attr
.host_assoc
8930 || sym
->attr
.in_common
8931 || sym
->attr
.pointer
8932 || sym
->attr
.cray_pointee
8933 || sym
->attr
.target
)
8934 && expr2
->symtree
!= NULL
8935 && expr2
->symtree
->n
.sym
== expr2
->symtree
->n
.sym
->result
)
8938 /* A PURE function can unconditionally be called without a temporary. */
8939 if (expr2
->value
.function
.esym
!= NULL
8940 && expr2
->value
.function
.esym
->attr
.pure
)
8943 /* Implicit_pure functions are those which could legally be declared
8945 if (expr2
->value
.function
.esym
!= NULL
8946 && expr2
->value
.function
.esym
->attr
.implicit_pure
)
8949 if (!sym
->attr
.use_assoc
8950 && !sym
->attr
.in_common
8951 && !sym
->attr
.pointer
8952 && !sym
->attr
.target
8953 && !sym
->attr
.cray_pointee
8954 && expr2
->value
.function
.esym
)
8956 /* A temporary is not needed if the function is not contained and
8957 the variable is local or host associated and not a pointer or
8959 if (!expr2
->value
.function
.esym
->attr
.contained
)
8962 /* A temporary is not needed if the lhs has never been host
8963 associated and the procedure is contained. */
8964 else if (!sym
->attr
.host_assoc
)
8967 /* A temporary is not needed if the variable is local and not
8968 a pointer, a target or a result. */
8970 && expr2
->value
.function
.esym
->ns
== sym
->ns
->parent
)
8974 /* Default to temporary use. */
8979 /* Provide the loop info so that the lhs descriptor can be built for
8980 reallocatable assignments from extrinsic function calls. */
8983 realloc_lhs_loop_for_fcn_call (gfc_se
*se
, locus
*where
, gfc_ss
**ss
,
8986 /* Signal that the function call should not be made by
8987 gfc_conv_loop_setup. */
8988 se
->ss
->is_alloc_lhs
= 1;
8989 gfc_init_loopinfo (loop
);
8990 gfc_add_ss_to_loop (loop
, *ss
);
8991 gfc_add_ss_to_loop (loop
, se
->ss
);
8992 gfc_conv_ss_startstride (loop
);
8993 gfc_conv_loop_setup (loop
, where
);
8994 gfc_copy_loopinfo_to_se (se
, loop
);
8995 gfc_add_block_to_block (&se
->pre
, &loop
->pre
);
8996 gfc_add_block_to_block (&se
->pre
, &loop
->post
);
8997 se
->ss
->is_alloc_lhs
= 0;
9001 /* For assignment to a reallocatable lhs from intrinsic functions,
9002 replace the se.expr (ie. the result) with a temporary descriptor.
9003 Null the data field so that the library allocates space for the
9004 result. Free the data of the original descriptor after the function,
9005 in case it appears in an argument expression and transfer the
9006 result to the original descriptor. */
9009 fcncall_realloc_result (gfc_se
*se
, int rank
)
9018 /* Use the allocation done by the library. Substitute the lhs
9019 descriptor with a copy, whose data field is nulled.*/
9020 desc
= build_fold_indirect_ref_loc (input_location
, se
->expr
);
9021 if (POINTER_TYPE_P (TREE_TYPE (desc
)))
9022 desc
= build_fold_indirect_ref_loc (input_location
, desc
);
9024 /* Unallocated, the descriptor does not have a dtype. */
9025 tmp
= gfc_conv_descriptor_dtype (desc
);
9026 gfc_add_modify (&se
->pre
, tmp
, gfc_get_dtype (TREE_TYPE (desc
)));
9028 res_desc
= gfc_evaluate_now (desc
, &se
->pre
);
9029 gfc_conv_descriptor_data_set (&se
->pre
, res_desc
, null_pointer_node
);
9030 se
->expr
= gfc_build_addr_expr (NULL_TREE
, res_desc
);
9032 /* Free the lhs after the function call and copy the result data to
9033 the lhs descriptor. */
9034 tmp
= gfc_conv_descriptor_data_get (desc
);
9035 zero_cond
= fold_build2_loc (input_location
, EQ_EXPR
,
9036 boolean_type_node
, tmp
,
9037 build_int_cst (TREE_TYPE (tmp
), 0));
9038 zero_cond
= gfc_evaluate_now (zero_cond
, &se
->post
);
9039 tmp
= gfc_call_free (tmp
);
9040 gfc_add_expr_to_block (&se
->post
, tmp
);
9042 tmp
= gfc_conv_descriptor_data_get (res_desc
);
9043 gfc_conv_descriptor_data_set (&se
->post
, desc
, tmp
);
9045 /* Check that the shapes are the same between lhs and expression. */
9046 for (n
= 0 ; n
< rank
; n
++)
9049 tmp
= gfc_conv_descriptor_lbound_get (desc
, gfc_rank_cst
[n
]);
9050 tmp1
= gfc_conv_descriptor_lbound_get (res_desc
, gfc_rank_cst
[n
]);
9051 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
9052 gfc_array_index_type
, tmp
, tmp1
);
9053 tmp1
= gfc_conv_descriptor_ubound_get (desc
, gfc_rank_cst
[n
]);
9054 tmp
= fold_build2_loc (input_location
, MINUS_EXPR
,
9055 gfc_array_index_type
, tmp
, tmp1
);
9056 tmp1
= gfc_conv_descriptor_ubound_get (res_desc
, gfc_rank_cst
[n
]);
9057 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
,
9058 gfc_array_index_type
, tmp
, tmp1
);
9059 tmp
= fold_build2_loc (input_location
, NE_EXPR
,
9060 boolean_type_node
, tmp
,
9061 gfc_index_zero_node
);
9062 tmp
= gfc_evaluate_now (tmp
, &se
->post
);
9063 zero_cond
= fold_build2_loc (input_location
, TRUTH_OR_EXPR
,
9064 boolean_type_node
, tmp
,
9068 /* 'zero_cond' being true is equal to lhs not being allocated or the
9069 shapes being different. */
9070 zero_cond
= gfc_evaluate_now (zero_cond
, &se
->post
);
9072 /* Now reset the bounds returned from the function call to bounds based
9073 on the lhs lbounds, except where the lhs is not allocated or the shapes
9074 of 'variable and 'expr' are different. Set the offset accordingly. */
9075 offset
= gfc_index_zero_node
;
9076 for (n
= 0 ; n
< rank
; n
++)
9080 lbound
= gfc_conv_descriptor_lbound_get (desc
, gfc_rank_cst
[n
]);
9081 lbound
= fold_build3_loc (input_location
, COND_EXPR
,
9082 gfc_array_index_type
, zero_cond
,
9083 gfc_index_one_node
, lbound
);
9084 lbound
= gfc_evaluate_now (lbound
, &se
->post
);
9086 tmp
= gfc_conv_descriptor_ubound_get (res_desc
, gfc_rank_cst
[n
]);
9087 tmp
= fold_build2_loc (input_location
, PLUS_EXPR
,
9088 gfc_array_index_type
, tmp
, lbound
);
9089 gfc_conv_descriptor_lbound_set (&se
->post
, desc
,
9090 gfc_rank_cst
[n
], lbound
);
9091 gfc_conv_descriptor_ubound_set (&se
->post
, desc
,
9092 gfc_rank_cst
[n
], tmp
);
9094 /* Set stride and accumulate the offset. */
9095 tmp
= gfc_conv_descriptor_stride_get (res_desc
, gfc_rank_cst
[n
]);
9096 gfc_conv_descriptor_stride_set (&se
->post
, desc
,
9097 gfc_rank_cst
[n
], tmp
);
9098 tmp
= fold_build2_loc (input_location
, MULT_EXPR
,
9099 gfc_array_index_type
, lbound
, tmp
);
9100 offset
= fold_build2_loc (input_location
, MINUS_EXPR
,
9101 gfc_array_index_type
, offset
, tmp
);
9102 offset
= gfc_evaluate_now (offset
, &se
->post
);
9105 gfc_conv_descriptor_offset_set (&se
->post
, desc
, offset
);
9110 /* Try to translate array(:) = func (...), where func is a transformational
9111 array function, without using a temporary. Returns NULL if this isn't the
9115 gfc_trans_arrayfunc_assign (gfc_expr
* expr1
, gfc_expr
* expr2
)
9119 gfc_component
*comp
= NULL
;
9122 if (arrayfunc_assign_needs_temporary (expr1
, expr2
))
9125 /* The frontend doesn't seem to bother filling in expr->symtree for intrinsic
9127 comp
= gfc_get_proc_ptr_comp (expr2
);
9128 gcc_assert (expr2
->value
.function
.isym
9129 || (comp
&& comp
->attr
.dimension
)
9130 || (!comp
&& gfc_return_by_reference (expr2
->value
.function
.esym
)
9131 && expr2
->value
.function
.esym
->result
->attr
.dimension
));
9133 gfc_init_se (&se
, NULL
);
9134 gfc_start_block (&se
.pre
);
9135 se
.want_pointer
= 1;
9137 gfc_conv_array_parameter (&se
, expr1
, false, NULL
, NULL
, NULL
);
9139 if (expr1
->ts
.type
== BT_DERIVED
9140 && expr1
->ts
.u
.derived
->attr
.alloc_comp
)
9143 tmp
= gfc_deallocate_alloc_comp_no_caf (expr1
->ts
.u
.derived
, se
.expr
,
9145 gfc_add_expr_to_block (&se
.pre
, tmp
);
9148 se
.direct_byref
= 1;
9149 se
.ss
= gfc_walk_expr (expr2
);
9150 gcc_assert (se
.ss
!= gfc_ss_terminator
);
9152 /* Reallocate on assignment needs the loopinfo for extrinsic functions.
9153 This is signalled to gfc_conv_procedure_call by setting is_alloc_lhs.
9154 Clearly, this cannot be done for an allocatable function result, since
9155 the shape of the result is unknown and, in any case, the function must
9156 correctly take care of the reallocation internally. For intrinsic
9157 calls, the array data is freed and the library takes care of allocation.
9158 TODO: Add logic of trans-array.c: gfc_alloc_allocatable_for_assignment
9160 if (flag_realloc_lhs
9161 && gfc_is_reallocatable_lhs (expr1
)
9162 && !gfc_expr_attr (expr1
).codimension
9163 && !gfc_is_coindexed (expr1
)
9164 && !(expr2
->value
.function
.esym
9165 && expr2
->value
.function
.esym
->result
->attr
.allocatable
))
9167 realloc_lhs_warning (expr1
->ts
.type
, true, &expr1
->where
);
9169 if (!expr2
->value
.function
.isym
)
9171 ss
= gfc_walk_expr (expr1
);
9172 gcc_assert (ss
!= gfc_ss_terminator
);
9174 realloc_lhs_loop_for_fcn_call (&se
, &expr1
->where
, &ss
, &loop
);
9175 ss
->is_alloc_lhs
= 1;
9178 fcncall_realloc_result (&se
, expr1
->rank
);
9181 gfc_conv_function_expr (&se
, expr2
);
9182 gfc_add_block_to_block (&se
.pre
, &se
.post
);
9185 gfc_cleanup_loop (&loop
);
9187 gfc_free_ss_chain (se
.ss
);
9189 return gfc_finish_block (&se
.pre
);
9193 /* Try to efficiently translate array(:) = 0. Return NULL if this
9197 gfc_trans_zero_assign (gfc_expr
* expr
)
9199 tree dest
, len
, type
;
9203 sym
= expr
->symtree
->n
.sym
;
9204 dest
= gfc_get_symbol_decl (sym
);
9206 type
= TREE_TYPE (dest
);
9207 if (POINTER_TYPE_P (type
))
9208 type
= TREE_TYPE (type
);
9209 if (!GFC_ARRAY_TYPE_P (type
))
9212 /* Determine the length of the array. */
9213 len
= GFC_TYPE_ARRAY_SIZE (type
);
9214 if (!len
|| TREE_CODE (len
) != INTEGER_CST
)
9217 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (type
));
9218 len
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
, len
,
9219 fold_convert (gfc_array_index_type
, tmp
));
9221 /* If we are zeroing a local array avoid taking its address by emitting
9223 if (!POINTER_TYPE_P (TREE_TYPE (dest
)))
9224 return build2_loc (input_location
, MODIFY_EXPR
, void_type_node
,
9225 dest
, build_constructor (TREE_TYPE (dest
),
9228 /* Convert arguments to the correct types. */
9229 dest
= fold_convert (pvoid_type_node
, dest
);
9230 len
= fold_convert (size_type_node
, len
);
9232 /* Construct call to __builtin_memset. */
9233 tmp
= build_call_expr_loc (input_location
,
9234 builtin_decl_explicit (BUILT_IN_MEMSET
),
9235 3, dest
, integer_zero_node
, len
);
9236 return fold_convert (void_type_node
, tmp
);
9240 /* Helper for gfc_trans_array_copy and gfc_trans_array_constructor_copy
9241 that constructs the call to __builtin_memcpy. */
9244 gfc_build_memcpy_call (tree dst
, tree src
, tree len
)
9248 /* Convert arguments to the correct types. */
9249 if (!POINTER_TYPE_P (TREE_TYPE (dst
)))
9250 dst
= gfc_build_addr_expr (pvoid_type_node
, dst
);
9252 dst
= fold_convert (pvoid_type_node
, dst
);
9254 if (!POINTER_TYPE_P (TREE_TYPE (src
)))
9255 src
= gfc_build_addr_expr (pvoid_type_node
, src
);
9257 src
= fold_convert (pvoid_type_node
, src
);
9259 len
= fold_convert (size_type_node
, len
);
9261 /* Construct call to __builtin_memcpy. */
9262 tmp
= build_call_expr_loc (input_location
,
9263 builtin_decl_explicit (BUILT_IN_MEMCPY
),
9265 return fold_convert (void_type_node
, tmp
);
9269 /* Try to efficiently translate dst(:) = src(:). Return NULL if this
9270 can't be done. EXPR1 is the destination/lhs and EXPR2 is the
9271 source/rhs, both are gfc_full_array_ref_p which have been checked for
9275 gfc_trans_array_copy (gfc_expr
* expr1
, gfc_expr
* expr2
)
9277 tree dst
, dlen
, dtype
;
9278 tree src
, slen
, stype
;
9281 dst
= gfc_get_symbol_decl (expr1
->symtree
->n
.sym
);
9282 src
= gfc_get_symbol_decl (expr2
->symtree
->n
.sym
);
9284 dtype
= TREE_TYPE (dst
);
9285 if (POINTER_TYPE_P (dtype
))
9286 dtype
= TREE_TYPE (dtype
);
9287 stype
= TREE_TYPE (src
);
9288 if (POINTER_TYPE_P (stype
))
9289 stype
= TREE_TYPE (stype
);
9291 if (!GFC_ARRAY_TYPE_P (dtype
) || !GFC_ARRAY_TYPE_P (stype
))
9294 /* Determine the lengths of the arrays. */
9295 dlen
= GFC_TYPE_ARRAY_SIZE (dtype
);
9296 if (!dlen
|| TREE_CODE (dlen
) != INTEGER_CST
)
9298 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (dtype
));
9299 dlen
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
,
9300 dlen
, fold_convert (gfc_array_index_type
, tmp
));
9302 slen
= GFC_TYPE_ARRAY_SIZE (stype
);
9303 if (!slen
|| TREE_CODE (slen
) != INTEGER_CST
)
9305 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (stype
));
9306 slen
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
,
9307 slen
, fold_convert (gfc_array_index_type
, tmp
));
9309 /* Sanity check that they are the same. This should always be
9310 the case, as we should already have checked for conformance. */
9311 if (!tree_int_cst_equal (slen
, dlen
))
9314 return gfc_build_memcpy_call (dst
, src
, dlen
);
9318 /* Try to efficiently translate array(:) = (/ ... /). Return NULL if
9319 this can't be done. EXPR1 is the destination/lhs for which
9320 gfc_full_array_ref_p is true, and EXPR2 is the source/rhs. */
9323 gfc_trans_array_constructor_copy (gfc_expr
* expr1
, gfc_expr
* expr2
)
9325 unsigned HOST_WIDE_INT nelem
;
9331 nelem
= gfc_constant_array_constructor_p (expr2
->value
.constructor
);
9335 dst
= gfc_get_symbol_decl (expr1
->symtree
->n
.sym
);
9336 dtype
= TREE_TYPE (dst
);
9337 if (POINTER_TYPE_P (dtype
))
9338 dtype
= TREE_TYPE (dtype
);
9339 if (!GFC_ARRAY_TYPE_P (dtype
))
9342 /* Determine the lengths of the array. */
9343 len
= GFC_TYPE_ARRAY_SIZE (dtype
);
9344 if (!len
|| TREE_CODE (len
) != INTEGER_CST
)
9347 /* Confirm that the constructor is the same size. */
9348 if (compare_tree_int (len
, nelem
) != 0)
9351 tmp
= TYPE_SIZE_UNIT (gfc_get_element_type (dtype
));
9352 len
= fold_build2_loc (input_location
, MULT_EXPR
, gfc_array_index_type
, len
,
9353 fold_convert (gfc_array_index_type
, tmp
));
9355 stype
= gfc_typenode_for_spec (&expr2
->ts
);
9356 src
= gfc_build_constant_array_constructor (expr2
, stype
);
9358 stype
= TREE_TYPE (src
);
9359 if (POINTER_TYPE_P (stype
))
9360 stype
= TREE_TYPE (stype
);
9362 return gfc_build_memcpy_call (dst
, src
, len
);
9366 /* Tells whether the expression is to be treated as a variable reference. */
9369 gfc_expr_is_variable (gfc_expr
*expr
)
9372 gfc_component
*comp
;
9373 gfc_symbol
*func_ifc
;
9375 if (expr
->expr_type
== EXPR_VARIABLE
)
9378 arg
= gfc_get_noncopying_intrinsic_argument (expr
);
9381 gcc_assert (expr
->value
.function
.isym
->id
== GFC_ISYM_TRANSPOSE
);
9382 return gfc_expr_is_variable (arg
);
9385 /* A data-pointer-returning function should be considered as a variable
9387 if (expr
->expr_type
== EXPR_FUNCTION
9388 && expr
->ref
== NULL
)
9390 if (expr
->value
.function
.isym
!= NULL
)
9393 if (expr
->value
.function
.esym
!= NULL
)
9395 func_ifc
= expr
->value
.function
.esym
;
9400 gcc_assert (expr
->symtree
);
9401 func_ifc
= expr
->symtree
->n
.sym
;
9408 comp
= gfc_get_proc_ptr_comp (expr
);
9409 if ((expr
->expr_type
== EXPR_PPC
|| expr
->expr_type
== EXPR_FUNCTION
)
9412 func_ifc
= comp
->ts
.interface
;
9416 if (expr
->expr_type
== EXPR_COMPCALL
)
9418 gcc_assert (!expr
->value
.compcall
.tbp
->is_generic
);
9419 func_ifc
= expr
->value
.compcall
.tbp
->u
.specific
->n
.sym
;
9426 gcc_assert (func_ifc
->attr
.function
9427 && func_ifc
->result
!= NULL
);
9428 return func_ifc
->result
->attr
.pointer
;
9432 /* Is the lhs OK for automatic reallocation? */
9435 is_scalar_reallocatable_lhs (gfc_expr
*expr
)
9439 /* An allocatable variable with no reference. */
9440 if (expr
->symtree
->n
.sym
->attr
.allocatable
9444 /* All that can be left are allocatable components. However, we do
9445 not check for allocatable components here because the expression
9446 could be an allocatable component of a pointer component. */
9447 if (expr
->symtree
->n
.sym
->ts
.type
!= BT_DERIVED
9448 && expr
->symtree
->n
.sym
->ts
.type
!= BT_CLASS
)
9451 /* Find an allocatable component ref last. */
9452 for (ref
= expr
->ref
; ref
; ref
= ref
->next
)
9453 if (ref
->type
== REF_COMPONENT
9455 && ref
->u
.c
.component
->attr
.allocatable
)
9462 /* Allocate or reallocate scalar lhs, as necessary. */
9465 alloc_scalar_allocatable_for_assignment (stmtblock_t
*block
,
9480 if (!expr1
|| expr1
->rank
)
9483 if (!expr2
|| expr2
->rank
)
9486 for (ref
= expr1
->ref
; ref
; ref
= ref
->next
)
9487 if (ref
->type
== REF_SUBSTRING
)
9490 realloc_lhs_warning (expr2
->ts
.type
, false, &expr2
->where
);
9492 /* Since this is a scalar lhs, we can afford to do this. That is,
9493 there is no risk of side effects being repeated. */
9494 gfc_init_se (&lse
, NULL
);
9495 lse
.want_pointer
= 1;
9496 gfc_conv_expr (&lse
, expr1
);
9498 jump_label1
= gfc_build_label_decl (NULL_TREE
);
9499 jump_label2
= gfc_build_label_decl (NULL_TREE
);
9501 /* Do the allocation if the lhs is NULL. Otherwise go to label 1. */
9502 tmp
= build_int_cst (TREE_TYPE (lse
.expr
), 0);
9503 cond
= fold_build2_loc (input_location
, NE_EXPR
, boolean_type_node
,
9505 tmp
= build3_v (COND_EXPR
, cond
,
9506 build1_v (GOTO_EXPR
, jump_label1
),
9507 build_empty_stmt (input_location
));
9508 gfc_add_expr_to_block (block
, tmp
);
9510 if (expr1
->ts
.type
== BT_CHARACTER
&& expr1
->ts
.deferred
)
9512 /* Use the rhs string length and the lhs element size. */
9513 size
= string_length
;
9514 tmp
= TREE_TYPE (gfc_typenode_for_spec (&expr1
->ts
));
9515 tmp
= TYPE_SIZE_UNIT (tmp
);
9516 size_in_bytes
= fold_build2_loc (input_location
, MULT_EXPR
,
9517 TREE_TYPE (tmp
), tmp
,
9518 fold_convert (TREE_TYPE (tmp
), size
));
9522 /* Otherwise use the length in bytes of the rhs. */
9523 size
= TYPE_SIZE_UNIT (gfc_typenode_for_spec (&expr1
->ts
));
9524 size_in_bytes
= size
;
9527 size_in_bytes
= fold_build2_loc (input_location
, MAX_EXPR
, size_type_node
,
9528 size_in_bytes
, size_one_node
);
9530 if (gfc_caf_attr (expr1
).codimension
&& flag_coarray
== GFC_FCOARRAY_LIB
)
9532 tree caf_decl
, token
;
9534 symbol_attribute attr
;
9536 gfc_clear_attr (&attr
);
9537 gfc_init_se (&caf_se
, NULL
);
9539 caf_decl
= gfc_get_tree_for_caf_expr (expr1
);
9540 gfc_get_caf_token_offset (&caf_se
, &token
, NULL
, caf_decl
, NULL_TREE
,
9542 gfc_add_block_to_block (block
, &caf_se
.pre
);
9543 gfc_allocate_allocatable (block
, lse
.expr
, size_in_bytes
,
9544 gfc_build_addr_expr (NULL_TREE
, token
),
9545 NULL_TREE
, NULL_TREE
, NULL_TREE
, jump_label1
,
9548 else if (expr1
->ts
.type
== BT_DERIVED
&& expr1
->ts
.u
.derived
->attr
.alloc_comp
)
9550 tmp
= build_call_expr_loc (input_location
,
9551 builtin_decl_explicit (BUILT_IN_CALLOC
),
9552 2, build_one_cst (size_type_node
),
9554 tmp
= fold_convert (TREE_TYPE (lse
.expr
), tmp
);
9555 gfc_add_modify (block
, lse
.expr
, tmp
);
9559 tmp
= build_call_expr_loc (input_location
,
9560 builtin_decl_explicit (BUILT_IN_MALLOC
),
9562 tmp
= fold_convert (TREE_TYPE (lse
.expr
), tmp
);
9563 gfc_add_modify (block
, lse
.expr
, tmp
);
9566 if (expr1
->ts
.type
== BT_CHARACTER
&& expr1
->ts
.deferred
)
9568 /* Deferred characters need checking for lhs and rhs string
9569 length. Other deferred parameter variables will have to
9571 tmp
= build1_v (GOTO_EXPR
, jump_label2
);
9572 gfc_add_expr_to_block (block
, tmp
);
9574 tmp
= build1_v (LABEL_EXPR
, jump_label1
);
9575 gfc_add_expr_to_block (block
, tmp
);
9577 /* For a deferred length character, reallocate if lengths of lhs and
9578 rhs are different. */
9579 if (expr1
->ts
.type
== BT_CHARACTER
&& expr1
->ts
.deferred
)
9581 cond
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
9582 lse
.string_length
, size
);
9583 /* Jump past the realloc if the lengths are the same. */
9584 tmp
= build3_v (COND_EXPR
, cond
,
9585 build1_v (GOTO_EXPR
, jump_label2
),
9586 build_empty_stmt (input_location
));
9587 gfc_add_expr_to_block (block
, tmp
);
9588 tmp
= build_call_expr_loc (input_location
,
9589 builtin_decl_explicit (BUILT_IN_REALLOC
),
9590 2, fold_convert (pvoid_type_node
, lse
.expr
),
9592 tmp
= fold_convert (TREE_TYPE (lse
.expr
), tmp
);
9593 gfc_add_modify (block
, lse
.expr
, tmp
);
9594 tmp
= build1_v (LABEL_EXPR
, jump_label2
);
9595 gfc_add_expr_to_block (block
, tmp
);
9597 /* Update the lhs character length. */
9598 size
= string_length
;
9599 gfc_add_modify (block
, lse
.string_length
, size
);
9603 /* Check for assignments of the type
9607 to make sure we do not check for reallocation unneccessarily. */
9611 is_runtime_conformable (gfc_expr
*expr1
, gfc_expr
*expr2
)
9613 gfc_actual_arglist
*a
;
9616 switch (expr2
->expr_type
)
9619 return gfc_dep_compare_expr (expr1
, expr2
) == 0;
9622 if (expr2
->value
.function
.esym
9623 && expr2
->value
.function
.esym
->attr
.elemental
)
9625 for (a
= expr2
->value
.function
.actual
; a
!= NULL
; a
= a
->next
)
9628 if (e1
&& e1
->rank
> 0 && !is_runtime_conformable (expr1
, e1
))
9633 else if (expr2
->value
.function
.isym
9634 && expr2
->value
.function
.isym
->elemental
)
9636 for (a
= expr2
->value
.function
.actual
; a
!= NULL
; a
= a
->next
)
9639 if (e1
&& e1
->rank
> 0 && !is_runtime_conformable (expr1
, e1
))
9648 switch (expr2
->value
.op
.op
)
9651 case INTRINSIC_UPLUS
:
9652 case INTRINSIC_UMINUS
:
9653 case INTRINSIC_PARENTHESES
:
9654 return is_runtime_conformable (expr1
, expr2
->value
.op
.op1
);
9656 case INTRINSIC_PLUS
:
9657 case INTRINSIC_MINUS
:
9658 case INTRINSIC_TIMES
:
9659 case INTRINSIC_DIVIDE
:
9660 case INTRINSIC_POWER
:
9664 case INTRINSIC_NEQV
:
9671 case INTRINSIC_EQ_OS
:
9672 case INTRINSIC_NE_OS
:
9673 case INTRINSIC_GT_OS
:
9674 case INTRINSIC_GE_OS
:
9675 case INTRINSIC_LT_OS
:
9676 case INTRINSIC_LE_OS
:
9678 e1
= expr2
->value
.op
.op1
;
9679 e2
= expr2
->value
.op
.op2
;
9681 if (e1
->rank
== 0 && e2
->rank
> 0)
9682 return is_runtime_conformable (expr1
, e2
);
9683 else if (e1
->rank
> 0 && e2
->rank
== 0)
9684 return is_runtime_conformable (expr1
, e1
);
9685 else if (e1
->rank
> 0 && e2
->rank
> 0)
9686 return is_runtime_conformable (expr1
, e1
)
9687 && is_runtime_conformable (expr1
, e2
);
9705 trans_class_assignment (stmtblock_t
*block
, gfc_expr
*lhs
, gfc_expr
*rhs
,
9706 gfc_se
*lse
, gfc_se
*rse
, bool use_vptr_copy
,
9709 tree tmp
, fcn
, stdcopy
, to_len
, from_len
, vptr
;
9710 vec
<tree
, va_gc
> *args
= NULL
;
9712 vptr
= trans_class_vptr_len_assignment (block
, lhs
, rhs
, rse
, &to_len
,
9715 /* Generate allocation of the lhs. */
9721 tmp
= gfc_vptr_size_get (vptr
);
9722 class_han
= GFC_CLASS_TYPE_P (TREE_TYPE (lse
->expr
))
9723 ? gfc_class_data_get (lse
->expr
) : lse
->expr
;
9724 gfc_init_block (&alloc
);
9725 gfc_allocate_using_malloc (&alloc
, class_han
, tmp
, NULL_TREE
);
9726 tmp
= fold_build2_loc (input_location
, EQ_EXPR
,
9727 boolean_type_node
, class_han
,
9728 build_int_cst (prvoid_type_node
, 0));
9729 tmp
= fold_build3_loc (input_location
, COND_EXPR
, void_type_node
,
9731 PRED_FORTRAN_FAIL_ALLOC
),
9732 gfc_finish_block (&alloc
),
9733 build_empty_stmt (input_location
));
9734 gfc_add_expr_to_block (&lse
->pre
, tmp
);
9737 fcn
= gfc_vptr_copy_get (vptr
);
9739 tmp
= GFC_CLASS_TYPE_P (TREE_TYPE (rse
->expr
))
9740 ? gfc_class_data_get (rse
->expr
) : rse
->expr
;
9743 if (!POINTER_TYPE_P (TREE_TYPE (tmp
))
9744 || INDIRECT_REF_P (tmp
)
9745 || (rhs
->ts
.type
== BT_DERIVED
9746 && rhs
->ts
.u
.derived
->attr
.unlimited_polymorphic
9747 && !rhs
->ts
.u
.derived
->attr
.pointer
9748 && !rhs
->ts
.u
.derived
->attr
.allocatable
)
9749 || (UNLIMITED_POLY (rhs
)
9750 && !CLASS_DATA (rhs
)->attr
.pointer
9751 && !CLASS_DATA (rhs
)->attr
.allocatable
))
9752 vec_safe_push (args
, gfc_build_addr_expr (NULL_TREE
, tmp
));
9754 vec_safe_push (args
, tmp
);
9755 tmp
= GFC_CLASS_TYPE_P (TREE_TYPE (lse
->expr
))
9756 ? gfc_class_data_get (lse
->expr
) : lse
->expr
;
9757 if (!POINTER_TYPE_P (TREE_TYPE (tmp
))
9758 || INDIRECT_REF_P (tmp
)
9759 || (lhs
->ts
.type
== BT_DERIVED
9760 && lhs
->ts
.u
.derived
->attr
.unlimited_polymorphic
9761 && !lhs
->ts
.u
.derived
->attr
.pointer
9762 && !lhs
->ts
.u
.derived
->attr
.allocatable
)
9763 || (UNLIMITED_POLY (lhs
)
9764 && !CLASS_DATA (lhs
)->attr
.pointer
9765 && !CLASS_DATA (lhs
)->attr
.allocatable
))
9766 vec_safe_push (args
, gfc_build_addr_expr (NULL_TREE
, tmp
));
9768 vec_safe_push (args
, tmp
);
9770 stdcopy
= build_call_vec (TREE_TYPE (TREE_TYPE (fcn
)), fcn
, args
);
9772 if (to_len
!= NULL_TREE
&& !integer_zerop (from_len
))
9775 vec_safe_push (args
, from_len
);
9776 vec_safe_push (args
, to_len
);
9777 extcopy
= build_call_vec (TREE_TYPE (TREE_TYPE (fcn
)), fcn
, args
);
9779 tmp
= fold_build2_loc (input_location
, GT_EXPR
,
9780 boolean_type_node
, from_len
,
9782 return fold_build3_loc (input_location
, COND_EXPR
,
9783 void_type_node
, tmp
,
9791 tree rhst
= GFC_CLASS_TYPE_P (TREE_TYPE (lse
->expr
))
9792 ? gfc_class_data_get (lse
->expr
) : lse
->expr
;
9794 gfc_init_block (&tblock
);
9795 if (!POINTER_TYPE_P (TREE_TYPE (tmp
)))
9796 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
9797 if (!POINTER_TYPE_P (TREE_TYPE (rhst
)))
9798 rhst
= gfc_build_addr_expr (NULL_TREE
, rhst
);
9799 /* When coming from a ptr_copy lhs and rhs are swapped. */
9800 gfc_add_modify_loc (input_location
, &tblock
, rhst
,
9801 fold_convert (TREE_TYPE (rhst
), tmp
));
9802 return gfc_finish_block (&tblock
);
9806 /* Subroutine of gfc_trans_assignment that actually scalarizes the
9807 assignment. EXPR1 is the destination/LHS and EXPR2 is the source/RHS.
9808 init_flag indicates initialization expressions and dealloc that no
9809 deallocate prior assignment is needed (if in doubt, set true).
9810 When PTR_COPY is set and expr1 is a class type, then use the _vptr-copy
9811 routine instead of a pointer assignment. Alias resolution is only done,
9812 when MAY_ALIAS is set (the default). This flag is used by ALLOCATE()
9813 where it is known, that newly allocated memory on the lhs can never be
9814 an alias of the rhs. */
9817 gfc_trans_assignment_1 (gfc_expr
* expr1
, gfc_expr
* expr2
, bool init_flag
,
9818 bool dealloc
, bool use_vptr_copy
, bool may_alias
)
9823 gfc_ss
*lss_section
;
9830 bool scalar_to_array
;
9833 bool maybe_workshare
= false, lhs_refs_comp
= false, rhs_refs_comp
= false;
9834 symbol_attribute lhs_caf_attr
, rhs_caf_attr
, lhs_attr
;
9835 bool is_poly_assign
;
9837 /* Assignment of the form lhs = rhs. */
9838 gfc_start_block (&block
);
9840 gfc_init_se (&lse
, NULL
);
9841 gfc_init_se (&rse
, NULL
);
9844 lss
= gfc_walk_expr (expr1
);
9845 if (gfc_is_reallocatable_lhs (expr1
)
9846 && !(expr2
->expr_type
== EXPR_FUNCTION
9847 && expr2
->value
.function
.isym
!= NULL
))
9848 lss
->is_alloc_lhs
= 1;
9851 if ((expr1
->ts
.type
== BT_DERIVED
)
9852 && (gfc_is_alloc_class_array_function (expr2
)
9853 || gfc_is_alloc_class_scalar_function (expr2
)))
9854 expr2
->must_finalize
= 1;
9856 /* Checking whether a class assignment is desired is quite complicated and
9857 needed at two locations, so do it once only before the information is
9859 lhs_attr
= gfc_expr_attr (expr1
);
9860 is_poly_assign
= (use_vptr_copy
|| lhs_attr
.pointer
9861 || (lhs_attr
.allocatable
&& !lhs_attr
.dimension
))
9862 && (expr1
->ts
.type
== BT_CLASS
9863 || gfc_is_class_array_ref (expr1
, NULL
)
9864 || gfc_is_class_scalar_expr (expr1
)
9865 || gfc_is_class_array_ref (expr2
, NULL
)
9866 || gfc_is_class_scalar_expr (expr2
));
9869 /* Only analyze the expressions for coarray properties, when in coarray-lib
9871 if (flag_coarray
== GFC_FCOARRAY_LIB
)
9873 lhs_caf_attr
= gfc_caf_attr (expr1
, false, &lhs_refs_comp
);
9874 rhs_caf_attr
= gfc_caf_attr (expr2
, false, &rhs_refs_comp
);
9877 if (lss
!= gfc_ss_terminator
)
9879 /* The assignment needs scalarization. */
9882 /* Find a non-scalar SS from the lhs. */
9883 while (lss_section
!= gfc_ss_terminator
9884 && lss_section
->info
->type
!= GFC_SS_SECTION
)
9885 lss_section
= lss_section
->next
;
9887 gcc_assert (lss_section
!= gfc_ss_terminator
);
9889 /* Initialize the scalarizer. */
9890 gfc_init_loopinfo (&loop
);
9893 rss
= gfc_walk_expr (expr2
);
9894 if (rss
== gfc_ss_terminator
)
9895 /* The rhs is scalar. Add a ss for the expression. */
9896 rss
= gfc_get_scalar_ss (gfc_ss_terminator
, expr2
);
9897 /* When doing a class assign, then the handle to the rhs needs to be a
9898 pointer to allow for polymorphism. */
9899 if (is_poly_assign
&& expr2
->rank
== 0 && !UNLIMITED_POLY (expr2
))
9900 rss
->info
->type
= GFC_SS_REFERENCE
;
9902 /* Associate the SS with the loop. */
9903 gfc_add_ss_to_loop (&loop
, lss
);
9904 gfc_add_ss_to_loop (&loop
, rss
);
9906 /* Calculate the bounds of the scalarization. */
9907 gfc_conv_ss_startstride (&loop
);
9908 /* Enable loop reversal. */
9909 for (n
= 0; n
< GFC_MAX_DIMENSIONS
; n
++)
9910 loop
.reverse
[n
] = GFC_ENABLE_REVERSE
;
9911 /* Resolve any data dependencies in the statement. */
9913 gfc_conv_resolve_dependencies (&loop
, lss
, rss
);
9914 /* Setup the scalarizing loops. */
9915 gfc_conv_loop_setup (&loop
, &expr2
->where
);
9917 /* Setup the gfc_se structures. */
9918 gfc_copy_loopinfo_to_se (&lse
, &loop
);
9919 gfc_copy_loopinfo_to_se (&rse
, &loop
);
9922 gfc_mark_ss_chain_used (rss
, 1);
9923 if (loop
.temp_ss
== NULL
)
9926 gfc_mark_ss_chain_used (lss
, 1);
9930 lse
.ss
= loop
.temp_ss
;
9931 gfc_mark_ss_chain_used (lss
, 3);
9932 gfc_mark_ss_chain_used (loop
.temp_ss
, 3);
9935 /* Allow the scalarizer to workshare array assignments. */
9936 if ((ompws_flags
& (OMPWS_WORKSHARE_FLAG
| OMPWS_SCALARIZER_BODY
))
9937 == OMPWS_WORKSHARE_FLAG
9938 && loop
.temp_ss
== NULL
)
9940 maybe_workshare
= true;
9941 ompws_flags
|= OMPWS_SCALARIZER_WS
| OMPWS_SCALARIZER_BODY
;
9944 /* Start the scalarized loop body. */
9945 gfc_start_scalarized_body (&loop
, &body
);
9948 gfc_init_block (&body
);
9950 l_is_temp
= (lss
!= gfc_ss_terminator
&& loop
.temp_ss
!= NULL
);
9952 /* Translate the expression. */
9953 rse
.want_coarray
= flag_coarray
== GFC_FCOARRAY_LIB
&& init_flag
9954 && lhs_caf_attr
.codimension
;
9955 gfc_conv_expr (&rse
, expr2
);
9957 /* Deal with the case of a scalar class function assigned to a derived type. */
9958 if (gfc_is_alloc_class_scalar_function (expr2
)
9959 && expr1
->ts
.type
== BT_DERIVED
)
9961 rse
.expr
= gfc_class_data_get (rse
.expr
);
9962 rse
.expr
= build_fold_indirect_ref_loc (input_location
, rse
.expr
);
9965 /* Stabilize a string length for temporaries. */
9966 if (expr2
->ts
.type
== BT_CHARACTER
&& !expr1
->ts
.deferred
9967 && !(VAR_P (rse
.string_length
)
9968 || TREE_CODE (rse
.string_length
) == PARM_DECL
9969 || TREE_CODE (rse
.string_length
) == INDIRECT_REF
))
9970 string_length
= gfc_evaluate_now (rse
.string_length
, &rse
.pre
);
9971 else if (expr2
->ts
.type
== BT_CHARACTER
)
9972 string_length
= rse
.string_length
;
9974 string_length
= NULL_TREE
;
9978 gfc_conv_tmp_array_ref (&lse
);
9979 if (expr2
->ts
.type
== BT_CHARACTER
)
9980 lse
.string_length
= string_length
;
9984 gfc_conv_expr (&lse
, expr1
);
9985 if (gfc_option
.rtcheck
& GFC_RTCHECK_MEM
9987 && gfc_expr_attr (expr1
).allocatable
9994 tmp
= INDIRECT_REF_P (lse
.expr
)
9995 ? gfc_build_addr_expr (NULL_TREE
, lse
.expr
) : lse
.expr
;
9997 /* We should only get array references here. */
9998 gcc_assert (TREE_CODE (tmp
) == POINTER_PLUS_EXPR
9999 || TREE_CODE (tmp
) == ARRAY_REF
);
10001 /* 'tmp' is either the pointer to the array(POINTER_PLUS_EXPR)
10002 or the array itself(ARRAY_REF). */
10003 tmp
= TREE_OPERAND (tmp
, 0);
10005 /* Provide the address of the array. */
10006 if (TREE_CODE (lse
.expr
) == ARRAY_REF
)
10007 tmp
= gfc_build_addr_expr (NULL_TREE
, tmp
);
10009 cond
= fold_build2_loc (input_location
, EQ_EXPR
, boolean_type_node
,
10010 tmp
, build_int_cst (TREE_TYPE (tmp
), 0));
10011 msg
= _("Assignment of scalar to unallocated array");
10012 gfc_trans_runtime_check (true, false, cond
, &loop
.pre
,
10013 &expr1
->where
, msg
);
10017 /* Assignments of scalar derived types with allocatable components
10018 to arrays must be done with a deep copy and the rhs temporary
10019 must have its components deallocated afterwards. */
10020 scalar_to_array
= (expr2
->ts
.type
== BT_DERIVED
10021 && expr2
->ts
.u
.derived
->attr
.alloc_comp
10022 && !gfc_expr_is_variable (expr2
)
10023 && expr1
->rank
&& !expr2
->rank
);
10024 scalar_to_array
|= (expr1
->ts
.type
== BT_DERIVED
10026 && expr1
->ts
.u
.derived
->attr
.alloc_comp
10027 && gfc_is_alloc_class_scalar_function (expr2
));
10028 if (scalar_to_array
&& dealloc
)
10030 tmp
= gfc_deallocate_alloc_comp_no_caf (expr2
->ts
.u
.derived
, rse
.expr
, 0);
10031 gfc_prepend_expr_to_block (&loop
.post
, tmp
);
10034 /* When assigning a character function result to a deferred-length variable,
10035 the function call must happen before the (re)allocation of the lhs -
10036 otherwise the character length of the result is not known.
10037 NOTE: This relies on having the exact dependence of the length type
10038 parameter available to the caller; gfortran saves it in the .mod files.
10039 NOTE ALSO: The concatenation operation generates a temporary pointer,
10040 whose allocation must go to the innermost loop. */
10041 if (flag_realloc_lhs
10042 && expr2
->ts
.type
== BT_CHARACTER
&& expr1
->ts
.deferred
10043 && !(lss
!= gfc_ss_terminator
10044 && expr2
->expr_type
== EXPR_OP
10045 && expr2
->value
.op
.op
== INTRINSIC_CONCAT
))
10046 gfc_add_block_to_block (&block
, &rse
.pre
);
10048 /* Nullify the allocatable components corresponding to those of the lhs
10049 derived type, so that the finalization of the function result does not
10050 affect the lhs of the assignment. Prepend is used to ensure that the
10051 nullification occurs before the call to the finalizer. In the case of
10052 a scalar to array assignment, this is done in gfc_trans_scalar_assign
10053 as part of the deep copy. */
10054 if (!scalar_to_array
&& expr1
->ts
.type
== BT_DERIVED
10055 && (gfc_is_alloc_class_array_function (expr2
)
10056 || gfc_is_alloc_class_scalar_function (expr2
)))
10059 tmp
= gfc_nullify_alloc_comp (expr1
->ts
.u
.derived
, rse
.expr
, 0);
10060 gfc_prepend_expr_to_block (&rse
.post
, tmp
);
10061 if (lss
!= gfc_ss_terminator
&& rss
== gfc_ss_terminator
)
10062 gfc_add_block_to_block (&loop
.post
, &rse
.post
);
10065 if (is_poly_assign
)
10066 tmp
= trans_class_assignment (&body
, expr1
, expr2
, &lse
, &rse
,
10067 use_vptr_copy
|| (lhs_attr
.allocatable
10068 && !lhs_attr
.dimension
),
10069 flag_realloc_lhs
&& !lhs_attr
.pointer
);
10070 else if (flag_coarray
== GFC_FCOARRAY_LIB
10071 && lhs_caf_attr
.codimension
&& rhs_caf_attr
.codimension
10072 && ((lhs_caf_attr
.allocatable
&& lhs_refs_comp
)
10073 || (rhs_caf_attr
.allocatable
&& rhs_refs_comp
)))
10075 /* Only detour to caf_send[get][_by_ref] () when the lhs or rhs is an
10076 allocatable component, because those need to be accessed via the
10077 caf-runtime. No need to check for coindexes here, because resolve
10078 has rewritten those already. */
10080 gfc_actual_arglist a1
, a2
;
10081 /* Clear the structures to prevent accessing garbage. */
10082 memset (&code
, '\0', sizeof (gfc_code
));
10083 memset (&a1
, '\0', sizeof (gfc_actual_arglist
));
10084 memset (&a2
, '\0', sizeof (gfc_actual_arglist
));
10089 code
.ext
.actual
= &a1
;
10090 code
.resolved_isym
= gfc_intrinsic_subroutine_by_id (GFC_ISYM_CAF_SEND
);
10091 tmp
= gfc_conv_intrinsic_subroutine (&code
);
10094 tmp
= gfc_trans_scalar_assign (&lse
, &rse
, expr1
->ts
,
10095 gfc_expr_is_variable (expr2
)
10097 || expr2
->expr_type
== EXPR_ARRAY
,
10098 !(l_is_temp
|| init_flag
) && dealloc
,
10099 expr1
->symtree
->n
.sym
->attr
.codimension
);
10100 /* Add the pre blocks to the body. */
10101 gfc_add_block_to_block (&body
, &rse
.pre
);
10102 gfc_add_block_to_block (&body
, &lse
.pre
);
10103 gfc_add_expr_to_block (&body
, tmp
);
10104 /* Add the post blocks to the body. */
10105 gfc_add_block_to_block (&body
, &rse
.post
);
10106 gfc_add_block_to_block (&body
, &lse
.post
);
10108 if (lss
== gfc_ss_terminator
)
10110 /* F2003: Add the code for reallocation on assignment. */
10111 if (flag_realloc_lhs
&& is_scalar_reallocatable_lhs (expr1
)
10112 && !is_poly_assign
)
10113 alloc_scalar_allocatable_for_assignment (&block
, string_length
,
10116 /* Use the scalar assignment as is. */
10117 gfc_add_block_to_block (&block
, &body
);
10121 gcc_assert (lse
.ss
== gfc_ss_terminator
10122 && rse
.ss
== gfc_ss_terminator
);
10126 gfc_trans_scalarized_loop_boundary (&loop
, &body
);
10128 /* We need to copy the temporary to the actual lhs. */
10129 gfc_init_se (&lse
, NULL
);
10130 gfc_init_se (&rse
, NULL
);
10131 gfc_copy_loopinfo_to_se (&lse
, &loop
);
10132 gfc_copy_loopinfo_to_se (&rse
, &loop
);
10134 rse
.ss
= loop
.temp_ss
;
10137 gfc_conv_tmp_array_ref (&rse
);
10138 gfc_conv_expr (&lse
, expr1
);
10140 gcc_assert (lse
.ss
== gfc_ss_terminator
10141 && rse
.ss
== gfc_ss_terminator
);
10143 if (expr2
->ts
.type
== BT_CHARACTER
)
10144 rse
.string_length
= string_length
;
10146 tmp
= gfc_trans_scalar_assign (&lse
, &rse
, expr1
->ts
,
10148 gfc_add_expr_to_block (&body
, tmp
);
10151 /* F2003: Allocate or reallocate lhs of allocatable array. */
10152 if (flag_realloc_lhs
10153 && gfc_is_reallocatable_lhs (expr1
)
10155 && !is_runtime_conformable (expr1
, expr2
))
10157 realloc_lhs_warning (expr1
->ts
.type
, true, &expr1
->where
);
10158 ompws_flags
&= ~OMPWS_SCALARIZER_WS
;
10159 tmp
= gfc_alloc_allocatable_for_assignment (&loop
, expr1
, expr2
);
10160 if (tmp
!= NULL_TREE
)
10161 gfc_add_expr_to_block (&loop
.code
[expr1
->rank
- 1], tmp
);
10164 if (maybe_workshare
)
10165 ompws_flags
&= ~OMPWS_SCALARIZER_BODY
;
10167 /* Generate the copying loops. */
10168 gfc_trans_scalarizing_loops (&loop
, &body
);
10170 /* Wrap the whole thing up. */
10171 gfc_add_block_to_block (&block
, &loop
.pre
);
10172 gfc_add_block_to_block (&block
, &loop
.post
);
10174 gfc_cleanup_loop (&loop
);
10177 return gfc_finish_block (&block
);
10181 /* Check whether EXPR is a copyable array. */
10184 copyable_array_p (gfc_expr
* expr
)
10186 if (expr
->expr_type
!= EXPR_VARIABLE
)
10189 /* First check it's an array. */
10190 if (expr
->rank
< 1 || !expr
->ref
|| expr
->ref
->next
)
10193 if (!gfc_full_array_ref_p (expr
->ref
, NULL
))
10196 /* Next check that it's of a simple enough type. */
10197 switch (expr
->ts
.type
)
10209 return !expr
->ts
.u
.derived
->attr
.alloc_comp
;
10218 /* Translate an assignment. */
10221 gfc_trans_assignment (gfc_expr
* expr1
, gfc_expr
* expr2
, bool init_flag
,
10222 bool dealloc
, bool use_vptr_copy
, bool may_alias
)
10226 /* Special case a single function returning an array. */
10227 if (expr2
->expr_type
== EXPR_FUNCTION
&& expr2
->rank
> 0)
10229 tmp
= gfc_trans_arrayfunc_assign (expr1
, expr2
);
10234 /* Special case assigning an array to zero. */
10235 if (copyable_array_p (expr1
)
10236 && is_zero_initializer_p (expr2
))
10238 tmp
= gfc_trans_zero_assign (expr1
);
10243 /* Special case copying one array to another. */
10244 if (copyable_array_p (expr1
)
10245 && copyable_array_p (expr2
)
10246 && gfc_compare_types (&expr1
->ts
, &expr2
->ts
)
10247 && !gfc_check_dependency (expr1
, expr2
, 0))
10249 tmp
= gfc_trans_array_copy (expr1
, expr2
);
10254 /* Special case initializing an array from a constant array constructor. */
10255 if (copyable_array_p (expr1
)
10256 && expr2
->expr_type
== EXPR_ARRAY
10257 && gfc_compare_types (&expr1
->ts
, &expr2
->ts
))
10259 tmp
= gfc_trans_array_constructor_copy (expr1
, expr2
);
10264 /* Fallback to the scalarizer to generate explicit loops. */
10265 return gfc_trans_assignment_1 (expr1
, expr2
, init_flag
, dealloc
,
10266 use_vptr_copy
, may_alias
);
10270 gfc_trans_init_assign (gfc_code
* code
)
10272 return gfc_trans_assignment (code
->expr1
, code
->expr2
, true, false, true);
10276 gfc_trans_assign (gfc_code
* code
)
10278 return gfc_trans_assignment (code
->expr1
, code
->expr2
, false, true);