1	/* gfortran header file
2	Copyright (C) 2000-2022 Free Software Foundation, Inc.
3	Contributed by Andy Vaught
4
5	This file is part of GCC.
6
7	GCC is free software; you can redistribute it and/or modify it under
8	the terms of the GNU General Public License as published by the Free
9	Software Foundation; either version 3, or (at your option) any later
10	version.
11
12	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13	WARRANTY; without even the implied warranty of MERCHANTABILITY or
14	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15	for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with GCC; see the file COPYING3. If not see
19	<http://www.gnu.org/licenses/>. */
20
21	#ifndef GCC_GFORTRAN_H
22	#define GCC_GFORTRAN_H
23
24	/* It's probably insane to have this large of a header file, but it
25	seemed like everything had to be recompiled anyway when a change
26	was made to a header file, and there were ordering issues with
27	multiple header files. Besides, Microsoft's winnt.h was 250k last
28	time I looked, so by comparison this is perfectly reasonable. */
29
30	#ifndef GCC_CORETYPES_H
31	#error "gfortran.h must be included after coretypes.h"
32	#endif
33
34	/* In order for the format checking to accept the Fortran front end
35	diagnostic framework extensions, you must include this file before
36	diagnostic-core.h, not after. We override the definition of GCC_DIAG_STYLE
37	in c-common.h. */
38	#undef GCC_DIAG_STYLE
39	#define GCC_DIAG_STYLE __gcc_gfc__
40	#if defined(GCC_DIAGNOSTIC_CORE_H)
41	#error \
42	In order for the format checking to accept the Fortran front end diagnostic \
43	framework extensions, you must include this file before diagnostic-core.h, \
44	not after.
45	#endif
46
47	/* Declarations common to the front-end and library are put in
48	libgfortran/libgfortran_frontend.h */
49	#include "libgfortran.h"
50
51
52	#include "intl.h"
53	#include "splay-tree.h"
54
55	/* Major control parameters. */
56
57	#define GFC_MAX_SYMBOL_LEN 63 /* Must be at least 63 for F2003. */
58	#define GFC_LETTERS 26 /* Number of letters in the alphabet. */
59
60	#define MAX_SUBRECORD_LENGTH 2147483639 /* 2**31-9 */
61
62
63	#define gfc_is_whitespace(c) ((c==' ') || (c=='\t') || (c=='\f'))
64
65	/* Macros to check for groups of structure-like types and flavors since
66	derived types, structures, maps, unions are often treated similarly. */
67	#define gfc_bt_struct(t) \
68	((t) == BT_DERIVED || (t) == BT_UNION)
69	#define gfc_fl_struct(f) \
70	((f) == FL_DERIVED || (f) == FL_UNION || (f) == FL_STRUCT)
71	#define case_bt_struct case BT_DERIVED: case BT_UNION
72	#define case_fl_struct case FL_DERIVED: case FL_UNION: case FL_STRUCT
73
74	/* Stringization. */
75	#define stringize(x) expand_macro(x)
76	#define expand_macro(x) # x
77
78	/* For the runtime library, a standard prefix is a requirement to
79	avoid cluttering the namespace with things nobody asked for. It's
80	ugly to look at and a pain to type when you add the prefix by hand,
81	so we hide it behind a macro. */
82	#define PREFIX(x) "_gfortran_" x
83	#define PREFIX_LEN 10
84
85	/* A prefix for internal variables, which are not user-visible. */
86	#if !defined (NO_DOT_IN_LABEL)
87	# define GFC_PREFIX(x) "_F." x
88	#elif !defined (NO_DOLLAR_IN_LABEL)
89	# define GFC_PREFIX(x) "_F$" x
90	#else
91	# define GFC_PREFIX(x) "_F_" x
92	#endif
93
94	#define BLANK_COMMON_NAME "__BLNK__"
95
96	/* Macro to initialize an mstring structure. */
97	#define minit(s, t) { s, NULL, t }
98
99	/* Structure for storing strings to be matched by gfc_match_string. */
100	typedef struct
101	{
102	const char *string;
103	const char *mp;
104	int tag;
105	}
106	mstring;
107
108	/* ISO_Fortran_binding.h
109	CAUTION: This has to be kept in sync with libgfortran. */
110
111	#define CFI_type_kind_shift 8
112	#define CFI_type_mask 0xFF
113	#define CFI_type_from_type_kind(t, k) (t + (k << CFI_type_kind_shift))
114
115	/* Constants, defined as macros. */
116	#define CFI_VERSION 1
117	#define CFI_MAX_RANK 15
118
119	/* Attributes. */
120	#define CFI_attribute_pointer 0
121	#define CFI_attribute_allocatable 1
122	#define CFI_attribute_other 2
123
124	#define CFI_type_mask 0xFF
125	#define CFI_type_kind_shift 8
126
127	/* Intrinsic types. Their kind number defines their storage size. */
128	#define CFI_type_Integer 1
129	#define CFI_type_Logical 2
130	#define CFI_type_Real 3
131	#define CFI_type_Complex 4
132	#define CFI_type_Character 5
133
134	/* Combined type (for more, see ISO_Fortran_binding.h). */
135	#define CFI_type_ucs4_char (CFI_type_Character + (4 << CFI_type_kind_shift))
136
137	/* Types with no kind. */
138	#define CFI_type_struct 6
139	#define CFI_type_cptr 7
140	#define CFI_type_cfunptr 8
141	#define CFI_type_other -1
142
143
144	/*************************** Enums *****************************/
145
146	/* Used when matching and resolving data I/O transfer statements. */
147
148	enum io_kind
149	{ M_READ, M_WRITE, M_PRINT, M_INQUIRE };
150
151
152	/* These are flags for identifying whether we are reading a character literal
153	between quotes or normal source code. */
154
155	enum gfc_instring
156	{ NONSTRING = 0, INSTRING_WARN, INSTRING_NOWARN };
157
158	/* This is returned by gfc_notification_std to know if, given the flags
159	that were given (-std=, -pedantic) we should issue an error, a warning
160	or nothing. */
161
162	enum notification
163	{ SILENT, WARNING, ERROR };
164
165	/* Matchers return one of these three values. The difference between
166	MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
167	successful, but that something non-syntactic is wrong and an error
168	has already been issued. */
169
170	enum match
171	{ MATCH_NO = 1, MATCH_YES, MATCH_ERROR };
172
173	/* Used for different Fortran source forms in places like scanner.cc. */
174	enum gfc_source_form
175	{ FORM_FREE, FORM_FIXED, FORM_UNKNOWN };
176
177	/* Expression node types. */
178	enum expr_t
179	{ EXPR_UNKNOWN = 0, EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
180	EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL, EXPR_COMPCALL, EXPR_PPC
181	};
182
183	/* Array types. */
184	enum array_type
185	{ AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
186	AS_ASSUMED_SIZE, AS_IMPLIED_SHAPE, AS_ASSUMED_RANK,
187	AS_UNKNOWN
188	};
189
190	enum ar_type
191	{ AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN };
192
193	/* Statement label types. ST_LABEL_DO_TARGET is used for obsolescent warnings
194	related to shared DO terminations and DO targets which are neither END DO
195	nor CONTINUE; otherwise it is identical to ST_LABEL_TARGET. */
196	enum gfc_sl_type
197	{ ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET, ST_LABEL_DO_TARGET,
198	ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
199	};
200
201	/* Intrinsic operators. */
202	enum gfc_intrinsic_op
203	{ GFC_INTRINSIC_BEGIN = 0,
204	INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
205	INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
206	INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
207	INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
208	/* ==, /=, >, >=, <, <= */
209	INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
210	INTRINSIC_LT, INTRINSIC_LE,
211	/* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style) */
212	INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
213	INTRINSIC_LT_OS, INTRINSIC_LE_OS,
214	INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN, INTRINSIC_PARENTHESES,
215	GFC_INTRINSIC_END, /* Sentinel */
216	/* User defined derived type pseudo operators. These are set beyond the
217	sentinel so that they are excluded from module_read and module_write. */
218	INTRINSIC_FORMATTED, INTRINSIC_UNFORMATTED
219	};
220
221	/* This macro is the number of intrinsic operators that exist.
222	Assumptions are made about the numbering of the interface_op enums. */
223	#define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
224
225	/* Arithmetic results. */
226	enum arith
227	{ ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
228	ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC, ARITH_PROHIBIT,
229	ARITH_WRONGCONCAT
230	};
231
232	/* Statements. */
233	enum gfc_statement
234	{
235	ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_ASSOCIATE,
236	ST_BACKSPACE, ST_BLOCK, ST_BLOCK_DATA,
237	ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
238	ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
239	ST_ELSEWHERE, ST_END_ASSOCIATE, ST_END_BLOCK, ST_END_BLOCK_DATA,
240	ST_ENDDO, ST_IMPLIED_ENDDO, ST_END_FILE, ST_FINAL, ST_FLUSH, ST_END_FORALL,
241	ST_END_FUNCTION, ST_ENDIF, ST_END_INTERFACE, ST_END_MODULE, ST_END_SUBMODULE,
242	ST_END_PROGRAM, ST_END_SELECT, ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE,
243	ST_ENTRY, ST_EQUIVALENCE, ST_ERROR_STOP, ST_EXIT, ST_FORALL, ST_FORALL_BLOCK,
244	ST_FORMAT, ST_FUNCTION, ST_GOTO, ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE,
245	ST_IMPORT, ST_INQUIRE, ST_INTERFACE, ST_SYNC_ALL, ST_SYNC_MEMORY,
246	ST_SYNC_IMAGES, ST_PARAMETER, ST_MODULE, ST_SUBMODULE, ST_MODULE_PROC,
247	ST_NAMELIST, ST_NULLIFY, ST_OPEN, ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC,
248	ST_READ, ST_RETURN, ST_REWIND, ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE,
249	ST_WHERE_BLOCK, ST_WHERE, ST_WAIT, ST_WRITE, ST_ASSIGNMENT,
250	ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE, ST_SIMPLE_IF,
251	ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT, ST_ENUM,
252	ST_ENUMERATOR, ST_END_ENUM, ST_SELECT_TYPE, ST_TYPE_IS, ST_CLASS_IS,
253	ST_SELECT_RANK, ST_RANK, ST_STRUCTURE_DECL, ST_END_STRUCTURE,
254	ST_UNION, ST_END_UNION, ST_MAP, ST_END_MAP,
255	ST_OACC_PARALLEL_LOOP, ST_OACC_END_PARALLEL_LOOP, ST_OACC_PARALLEL,
256	ST_OACC_END_PARALLEL, ST_OACC_KERNELS, ST_OACC_END_KERNELS, ST_OACC_DATA,
257	ST_OACC_END_DATA, ST_OACC_HOST_DATA, ST_OACC_END_HOST_DATA, ST_OACC_LOOP,
258	ST_OACC_END_LOOP, ST_OACC_DECLARE, ST_OACC_UPDATE, ST_OACC_WAIT,
259	ST_OACC_CACHE, ST_OACC_KERNELS_LOOP, ST_OACC_END_KERNELS_LOOP,
260	ST_OACC_SERIAL_LOOP, ST_OACC_END_SERIAL_LOOP, ST_OACC_SERIAL,
261	ST_OACC_END_SERIAL, ST_OACC_ENTER_DATA, ST_OACC_EXIT_DATA, ST_OACC_ROUTINE,
262	ST_OACC_ATOMIC, ST_OACC_END_ATOMIC,
263	ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_ATOMIC,
264	ST_OMP_END_CRITICAL, ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED,
265	ST_OMP_END_PARALLEL, ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
266	ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
267	ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
268	ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
269	ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
270	ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE, ST_OMP_TASK, ST_OMP_END_TASK,
271	ST_OMP_TASKWAIT, ST_OMP_TASKYIELD, ST_OMP_CANCEL, ST_OMP_CANCELLATION_POINT,
272	ST_OMP_TASKGROUP, ST_OMP_END_TASKGROUP, ST_OMP_SIMD, ST_OMP_END_SIMD,
273	ST_OMP_DO_SIMD, ST_OMP_END_DO_SIMD, ST_OMP_PARALLEL_DO_SIMD,
274	ST_OMP_END_PARALLEL_DO_SIMD, ST_OMP_DECLARE_SIMD, ST_OMP_DECLARE_REDUCTION,
275	ST_OMP_TARGET, ST_OMP_END_TARGET, ST_OMP_TARGET_DATA, ST_OMP_END_TARGET_DATA,
276	ST_OMP_TARGET_UPDATE, ST_OMP_DECLARE_TARGET, ST_OMP_DECLARE_VARIANT,
277	ST_OMP_TEAMS, ST_OMP_END_TEAMS, ST_OMP_DISTRIBUTE, ST_OMP_END_DISTRIBUTE,
278	ST_OMP_DISTRIBUTE_SIMD, ST_OMP_END_DISTRIBUTE_SIMD,
279	ST_OMP_DISTRIBUTE_PARALLEL_DO, ST_OMP_END_DISTRIBUTE_PARALLEL_DO,
280	ST_OMP_DISTRIBUTE_PARALLEL_DO_SIMD, ST_OMP_END_DISTRIBUTE_PARALLEL_DO_SIMD,
281	ST_OMP_TARGET_TEAMS, ST_OMP_END_TARGET_TEAMS, ST_OMP_TEAMS_DISTRIBUTE,
282	ST_OMP_END_TEAMS_DISTRIBUTE, ST_OMP_TEAMS_DISTRIBUTE_SIMD,
283	ST_OMP_END_TEAMS_DISTRIBUTE_SIMD, ST_OMP_TARGET_TEAMS_DISTRIBUTE,
284	ST_OMP_END_TARGET_TEAMS_DISTRIBUTE, ST_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD,
285	ST_OMP_END_TARGET_TEAMS_DISTRIBUTE_SIMD, ST_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO,
286	ST_OMP_END_TEAMS_DISTRIBUTE_PARALLEL_DO,
287	ST_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO,
288	ST_OMP_END_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO,
289	ST_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
290	ST_OMP_END_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
291	ST_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
292	ST_OMP_END_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
293	ST_OMP_TARGET_PARALLEL, ST_OMP_END_TARGET_PARALLEL,
294	ST_OMP_TARGET_PARALLEL_DO, ST_OMP_END_TARGET_PARALLEL_DO,
295	ST_OMP_TARGET_PARALLEL_DO_SIMD, ST_OMP_END_TARGET_PARALLEL_DO_SIMD,
296	ST_OMP_TARGET_ENTER_DATA, ST_OMP_TARGET_EXIT_DATA,
297	ST_OMP_TARGET_SIMD, ST_OMP_END_TARGET_SIMD,
298	ST_OMP_TASKLOOP, ST_OMP_END_TASKLOOP, ST_OMP_SCAN, ST_OMP_DEPOBJ,
299	ST_OMP_TASKLOOP_SIMD, ST_OMP_END_TASKLOOP_SIMD, ST_OMP_ORDERED_DEPEND,
300	ST_OMP_REQUIRES, ST_PROCEDURE, ST_GENERIC, ST_CRITICAL, ST_END_CRITICAL,
301	ST_GET_FCN_CHARACTERISTICS, ST_LOCK, ST_UNLOCK, ST_EVENT_POST,
302	ST_EVENT_WAIT, ST_FAIL_IMAGE, ST_FORM_TEAM, ST_CHANGE_TEAM,
303	ST_END_TEAM, ST_SYNC_TEAM, ST_OMP_PARALLEL_MASTER,
304	ST_OMP_END_PARALLEL_MASTER, ST_OMP_PARALLEL_MASTER_TASKLOOP,
305	ST_OMP_END_PARALLEL_MASTER_TASKLOOP, ST_OMP_PARALLEL_MASTER_TASKLOOP_SIMD,
306	ST_OMP_END_PARALLEL_MASTER_TASKLOOP_SIMD, ST_OMP_MASTER_TASKLOOP,
307	ST_OMP_END_MASTER_TASKLOOP, ST_OMP_MASTER_TASKLOOP_SIMD,
308	ST_OMP_END_MASTER_TASKLOOP_SIMD, ST_OMP_LOOP, ST_OMP_END_LOOP,
309	ST_OMP_PARALLEL_LOOP, ST_OMP_END_PARALLEL_LOOP, ST_OMP_TEAMS_LOOP,
310	ST_OMP_END_TEAMS_LOOP, ST_OMP_TARGET_PARALLEL_LOOP,
311	ST_OMP_END_TARGET_PARALLEL_LOOP, ST_OMP_TARGET_TEAMS_LOOP,
312	ST_OMP_END_TARGET_TEAMS_LOOP, ST_OMP_MASKED, ST_OMP_END_MASKED,
313	ST_OMP_PARALLEL_MASKED, ST_OMP_END_PARALLEL_MASKED,
314	ST_OMP_PARALLEL_MASKED_TASKLOOP, ST_OMP_END_PARALLEL_MASKED_TASKLOOP,
315	ST_OMP_PARALLEL_MASKED_TASKLOOP_SIMD,
316	ST_OMP_END_PARALLEL_MASKED_TASKLOOP_SIMD, ST_OMP_MASKED_TASKLOOP,
317	ST_OMP_END_MASKED_TASKLOOP, ST_OMP_MASKED_TASKLOOP_SIMD,
318	ST_OMP_END_MASKED_TASKLOOP_SIMD, ST_OMP_SCOPE, ST_OMP_END_SCOPE,
319	ST_OMP_ERROR, ST_NONE
320	};
321
322	/* Types of interfaces that we can have. Assignment interfaces are
323	considered to be intrinsic operators. */
324	enum interface_type
325	{
326	INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
327	INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT,
328	INTERFACE_DTIO
329	};
330
331	/* Symbol flavors: these are all mutually exclusive.
332	12 elements = 4 bits. */
333	enum sym_flavor
334	{
335	FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
336	FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
337	FL_UNION, FL_STRUCT, FL_VOID
338	};
339
340	/* Procedure types. 7 elements = 3 bits. */
341	enum procedure_type
342	{ PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
343	PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
344	};
345
346	/* Intent types. Note that these values are also used in another enum in
347	decl.cc (match_attr_spec). */
348	enum sym_intent
349	{ INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
350	};
351
352	/* Access types. */
353	enum gfc_access
354	{ ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
355	};
356
357	/* Flags to keep track of where an interface came from.
358	3 elements = 2 bits. */
359	enum ifsrc
360	{ IFSRC_UNKNOWN = 0, /* Interface unknown, only return type may be known. */
361	IFSRC_DECL, /* FUNCTION or SUBROUTINE declaration. */
362	IFSRC_IFBODY /* INTERFACE statement or PROCEDURE statement
363	with explicit interface. */
364	};
365
366	/* Whether a SAVE attribute was set explicitly or implicitly. */
367	enum save_state
368	{ SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
369	};
370
371	/* OpenACC 'routine' directive's level of parallelism. */
372	enum oacc_routine_lop
373	{ OACC_ROUTINE_LOP_NONE = 0,
374	OACC_ROUTINE_LOP_GANG,
375	OACC_ROUTINE_LOP_WORKER,
376	OACC_ROUTINE_LOP_VECTOR,
377	OACC_ROUTINE_LOP_SEQ,
378	OACC_ROUTINE_LOP_ERROR
379	};
380
381	/* Strings for all symbol attributes. We use these for dumping the
382	parse tree, in error messages, and also when reading and writing
383	modules. In symbol.cc. */
384	extern const mstring flavors[];
385	extern const mstring procedures[];
386	extern const mstring intents[];
387	extern const mstring access_types[];
388	extern const mstring ifsrc_types[];
389	extern const mstring save_status[];
390
391	/* Strings for DTIO procedure names. In symbol.cc. */
392	extern const mstring dtio_procs[];
393
394	enum dtio_codes
395	{ DTIO_RF = 0, DTIO_WF, DTIO_RUF, DTIO_WUF };
396
397	/* Enumeration of all the generic intrinsic functions. Used by the
398	backend for identification of a function. */
399
400	enum gfc_isym_id
401	{
402	/* GFC_ISYM_NONE is used for intrinsics which will never be seen by
403	the backend (e.g. KIND). */
404	GFC_ISYM_NONE = 0,
405	GFC_ISYM_ABORT,
406	GFC_ISYM_ABS,
407	GFC_ISYM_ACCESS,
408	GFC_ISYM_ACHAR,
409	GFC_ISYM_ACOS,
410	GFC_ISYM_ACOSD,
411	GFC_ISYM_ACOSH,
412	GFC_ISYM_ADJUSTL,
413	GFC_ISYM_ADJUSTR,
414	GFC_ISYM_AIMAG,
415	GFC_ISYM_AINT,
416	GFC_ISYM_ALARM,
417	GFC_ISYM_ALL,
418	GFC_ISYM_ALLOCATED,
419	GFC_ISYM_AND,
420	GFC_ISYM_ANINT,
421	GFC_ISYM_ANY,
422	GFC_ISYM_ASIN,
423	GFC_ISYM_ASIND,
424	GFC_ISYM_ASINH,
425	GFC_ISYM_ASSOCIATED,
426	GFC_ISYM_ATAN,
427	GFC_ISYM_ATAN2,
428	GFC_ISYM_ATAN2D,
429	GFC_ISYM_ATAND,
430	GFC_ISYM_ATANH,
431	GFC_ISYM_ATOMIC_ADD,
432	GFC_ISYM_ATOMIC_AND,
433	GFC_ISYM_ATOMIC_CAS,
434	GFC_ISYM_ATOMIC_DEF,
435	GFC_ISYM_ATOMIC_FETCH_ADD,
436	GFC_ISYM_ATOMIC_FETCH_AND,
437	GFC_ISYM_ATOMIC_FETCH_OR,
438	GFC_ISYM_ATOMIC_FETCH_XOR,
439	GFC_ISYM_ATOMIC_OR,
440	GFC_ISYM_ATOMIC_REF,
441	GFC_ISYM_ATOMIC_XOR,
442	GFC_ISYM_BGE,
443	GFC_ISYM_BGT,
444	GFC_ISYM_BIT_SIZE,
445	GFC_ISYM_BLE,
446	GFC_ISYM_BLT,
447	GFC_ISYM_BTEST,
448	GFC_ISYM_CAF_GET,
449	GFC_ISYM_CAF_SEND,
450	GFC_ISYM_CEILING,
451	GFC_ISYM_CHAR,
452	GFC_ISYM_CHDIR,
453	GFC_ISYM_CHMOD,
454	GFC_ISYM_CMPLX,
455	GFC_ISYM_CO_BROADCAST,
456	GFC_ISYM_CO_MAX,
457	GFC_ISYM_CO_MIN,
458	GFC_ISYM_CO_REDUCE,
459	GFC_ISYM_CO_SUM,
460	GFC_ISYM_COMMAND_ARGUMENT_COUNT,
461	GFC_ISYM_COMPILER_OPTIONS,
462	GFC_ISYM_COMPILER_VERSION,
463	GFC_ISYM_COMPLEX,
464	GFC_ISYM_CONJG,
465	GFC_ISYM_CONVERSION,
466	GFC_ISYM_COS,
467	GFC_ISYM_COSD,
468	GFC_ISYM_COSH,
469	GFC_ISYM_COTAN,
470	GFC_ISYM_COTAND,
471	GFC_ISYM_COUNT,
472	GFC_ISYM_CPU_TIME,
473	GFC_ISYM_CSHIFT,
474	GFC_ISYM_CTIME,
475	GFC_ISYM_C_ASSOCIATED,
476	GFC_ISYM_C_F_POINTER,
477	GFC_ISYM_C_F_PROCPOINTER,
478	GFC_ISYM_C_FUNLOC,
479	GFC_ISYM_C_LOC,
480	GFC_ISYM_C_SIZEOF,
481	GFC_ISYM_DATE_AND_TIME,
482	GFC_ISYM_DBLE,
483	GFC_ISYM_DFLOAT,
484	GFC_ISYM_DIGITS,
485	GFC_ISYM_DIM,
486	GFC_ISYM_DOT_PRODUCT,
487	GFC_ISYM_DPROD,
488	GFC_ISYM_DSHIFTL,
489	GFC_ISYM_DSHIFTR,
490	GFC_ISYM_DTIME,
491	GFC_ISYM_EOSHIFT,
492	GFC_ISYM_EPSILON,
493	GFC_ISYM_ERF,
494	GFC_ISYM_ERFC,
495	GFC_ISYM_ERFC_SCALED,
496	GFC_ISYM_ETIME,
497	GFC_ISYM_EVENT_QUERY,
498	GFC_ISYM_EXECUTE_COMMAND_LINE,
499	GFC_ISYM_EXIT,
500	GFC_ISYM_EXP,
501	GFC_ISYM_EXPONENT,
502	GFC_ISYM_EXTENDS_TYPE_OF,
503	GFC_ISYM_FAILED_IMAGES,
504	GFC_ISYM_FDATE,
505	GFC_ISYM_FE_RUNTIME_ERROR,
506	GFC_ISYM_FGET,
507	GFC_ISYM_FGETC,
508	GFC_ISYM_FINDLOC,
509	GFC_ISYM_FLOAT,
510	GFC_ISYM_FLOOR,
511	GFC_ISYM_FLUSH,
512	GFC_ISYM_FNUM,
513	GFC_ISYM_FPUT,
514	GFC_ISYM_FPUTC,
515	GFC_ISYM_FRACTION,
516	GFC_ISYM_FREE,
517	GFC_ISYM_FSEEK,
518	GFC_ISYM_FSTAT,
519	GFC_ISYM_FTELL,
520	GFC_ISYM_TGAMMA,
521	GFC_ISYM_GERROR,
522	GFC_ISYM_GETARG,
523	GFC_ISYM_GET_COMMAND,
524	GFC_ISYM_GET_COMMAND_ARGUMENT,
525	GFC_ISYM_GETCWD,
526	GFC_ISYM_GETENV,
527	GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
528	GFC_ISYM_GETGID,
529	GFC_ISYM_GETLOG,
530	GFC_ISYM_GETPID,
531	GFC_ISYM_GET_TEAM,
532	GFC_ISYM_GETUID,
533	GFC_ISYM_GMTIME,
534	GFC_ISYM_HOSTNM,
535	GFC_ISYM_HUGE,
536	GFC_ISYM_HYPOT,
537	GFC_ISYM_IACHAR,
538	GFC_ISYM_IALL,
539	GFC_ISYM_IAND,
540	GFC_ISYM_IANY,
541	GFC_ISYM_IARGC,
542	GFC_ISYM_IBCLR,
543	GFC_ISYM_IBITS,
544	GFC_ISYM_IBSET,
545	GFC_ISYM_ICHAR,
546	GFC_ISYM_IDATE,
547	GFC_ISYM_IEOR,
548	GFC_ISYM_IERRNO,
549	GFC_ISYM_IMAGE_INDEX,
550	GFC_ISYM_IMAGE_STATUS,
551	GFC_ISYM_INDEX,
552	GFC_ISYM_INT,
553	GFC_ISYM_INT2,
554	GFC_ISYM_INT8,
555	GFC_ISYM_IOR,
556	GFC_ISYM_IPARITY,
557	GFC_ISYM_IRAND,
558	GFC_ISYM_ISATTY,
559	GFC_ISYM_IS_CONTIGUOUS,
560	GFC_ISYM_IS_IOSTAT_END,
561	GFC_ISYM_IS_IOSTAT_EOR,
562	GFC_ISYM_ISNAN,
563	GFC_ISYM_ISHFT,
564	GFC_ISYM_ISHFTC,
565	GFC_ISYM_ITIME,
566	GFC_ISYM_J0,
567	GFC_ISYM_J1,
568	GFC_ISYM_JN,
569	GFC_ISYM_JN2,
570	GFC_ISYM_KILL,
571	GFC_ISYM_KIND,
572	GFC_ISYM_LBOUND,
573	GFC_ISYM_LCOBOUND,
574	GFC_ISYM_LEADZ,
575	GFC_ISYM_LEN,
576	GFC_ISYM_LEN_TRIM,
577	GFC_ISYM_LGAMMA,
578	GFC_ISYM_LGE,
579	GFC_ISYM_LGT,
580	GFC_ISYM_LINK,
581	GFC_ISYM_LLE,
582	GFC_ISYM_LLT,
583	GFC_ISYM_LOC,
584	GFC_ISYM_LOG,
585	GFC_ISYM_LOG10,
586	GFC_ISYM_LOGICAL,
587	GFC_ISYM_LONG,
588	GFC_ISYM_LSHIFT,
589	GFC_ISYM_LSTAT,
590	GFC_ISYM_LTIME,
591	GFC_ISYM_MALLOC,
592	GFC_ISYM_MASKL,
593	GFC_ISYM_MASKR,
594	GFC_ISYM_MATMUL,
595	GFC_ISYM_MAX,
596	GFC_ISYM_MAXEXPONENT,
597	GFC_ISYM_MAXLOC,
598	GFC_ISYM_MAXVAL,
599	GFC_ISYM_MCLOCK,
600	GFC_ISYM_MCLOCK8,
601	GFC_ISYM_MERGE,
602	GFC_ISYM_MERGE_BITS,
603	GFC_ISYM_MIN,
604	GFC_ISYM_MINEXPONENT,
605	GFC_ISYM_MINLOC,
606	GFC_ISYM_MINVAL,
607	GFC_ISYM_MOD,
608	GFC_ISYM_MODULO,
609	GFC_ISYM_MOVE_ALLOC,
610	GFC_ISYM_MVBITS,
611	GFC_ISYM_NEAREST,
612	GFC_ISYM_NEW_LINE,
613	GFC_ISYM_NINT,
614	GFC_ISYM_NORM2,
615	GFC_ISYM_NOT,
616	GFC_ISYM_NULL,
617	GFC_ISYM_NUM_IMAGES,
618	GFC_ISYM_OR,
619	GFC_ISYM_PACK,
620	GFC_ISYM_PARITY,
621	GFC_ISYM_PERROR,
622	GFC_ISYM_POPCNT,
623	GFC_ISYM_POPPAR,
624	GFC_ISYM_PRECISION,
625	GFC_ISYM_PRESENT,
626	GFC_ISYM_PRODUCT,
627	GFC_ISYM_RADIX,
628	GFC_ISYM_RAND,
629	GFC_ISYM_RANDOM_INIT,
630	GFC_ISYM_RANDOM_NUMBER,
631	GFC_ISYM_RANDOM_SEED,
632	GFC_ISYM_RANGE,
633	GFC_ISYM_RANK,
634	GFC_ISYM_REAL,
635	GFC_ISYM_REALPART,
636	GFC_ISYM_RENAME,
637	GFC_ISYM_REPEAT,
638	GFC_ISYM_RESHAPE,
639	GFC_ISYM_RRSPACING,
640	GFC_ISYM_RSHIFT,
641	GFC_ISYM_SAME_TYPE_AS,
642	GFC_ISYM_SC_KIND,
643	GFC_ISYM_SCALE,
644	GFC_ISYM_SCAN,
645	GFC_ISYM_SECNDS,
646	GFC_ISYM_SECOND,
647	GFC_ISYM_SET_EXPONENT,
648	GFC_ISYM_SHAPE,
649	GFC_ISYM_SHIFTA,
650	GFC_ISYM_SHIFTL,
651	GFC_ISYM_SHIFTR,
652	GFC_ISYM_BACKTRACE,
653	GFC_ISYM_SIGN,
654	GFC_ISYM_SIGNAL,
655	GFC_ISYM_SI_KIND,
656	GFC_ISYM_SIN,
657	GFC_ISYM_SIND,
658	GFC_ISYM_SINH,
659	GFC_ISYM_SIZE,
660	GFC_ISYM_SLEEP,
661	GFC_ISYM_SIZEOF,
662	GFC_ISYM_SNGL,
663	GFC_ISYM_SPACING,
664	GFC_ISYM_SPREAD,
665	GFC_ISYM_SQRT,
666	GFC_ISYM_SRAND,
667	GFC_ISYM_SR_KIND,
668	GFC_ISYM_STAT,
669	GFC_ISYM_STOPPED_IMAGES,
670	GFC_ISYM_STORAGE_SIZE,
671	GFC_ISYM_STRIDE,
672	GFC_ISYM_SUM,
673	GFC_ISYM_SYMLINK,
674	GFC_ISYM_SYMLNK,
675	GFC_ISYM_SYSTEM,
676	GFC_ISYM_SYSTEM_CLOCK,
677	GFC_ISYM_TAN,
678	GFC_ISYM_TAND,
679	GFC_ISYM_TANH,
680	GFC_ISYM_TEAM_NUMBER,
681	GFC_ISYM_THIS_IMAGE,
682	GFC_ISYM_TIME,
683	GFC_ISYM_TIME8,
684	GFC_ISYM_TINY,
685	GFC_ISYM_TRAILZ,
686	GFC_ISYM_TRANSFER,
687	GFC_ISYM_TRANSPOSE,
688	GFC_ISYM_TRIM,
689	GFC_ISYM_TTYNAM,
690	GFC_ISYM_UBOUND,
691	GFC_ISYM_UCOBOUND,
692	GFC_ISYM_UMASK,
693	GFC_ISYM_UNLINK,
694	GFC_ISYM_UNPACK,
695	GFC_ISYM_VERIFY,
696	GFC_ISYM_XOR,
697	GFC_ISYM_Y0,
698	GFC_ISYM_Y1,
699	GFC_ISYM_YN,
700	GFC_ISYM_YN2
701	};
702
703	enum init_local_logical
704	{
705	GFC_INIT_LOGICAL_OFF = 0,
706	GFC_INIT_LOGICAL_FALSE,
707	GFC_INIT_LOGICAL_TRUE
708	};
709
710	enum init_local_character
711	{
712	GFC_INIT_CHARACTER_OFF = 0,
713	GFC_INIT_CHARACTER_ON
714	};
715
716	enum init_local_integer
717	{
718	GFC_INIT_INTEGER_OFF = 0,
719	GFC_INIT_INTEGER_ON
720	};
721
722	enum gfc_reverse
723	{
724	GFC_ENABLE_REVERSE,
725	GFC_FORWARD_SET,
726	GFC_REVERSE_SET,
727	GFC_INHIBIT_REVERSE
728	};
729
730	enum gfc_param_spec_type
731	{
732	SPEC_EXPLICIT,
733	SPEC_ASSUMED,
734	SPEC_DEFERRED
735	};
736
737	/************************* Structures *****************************/
738
739	/* Used for keeping things in balanced binary trees. */
740	#define BBT_HEADER(self) int priority; struct self *left, *right
741
742	#define NAMED_INTCST(a,b,c,d) a,
743	#define NAMED_KINDARRAY(a,b,c,d) a,
744	#define NAMED_FUNCTION(a,b,c,d) a,
745	#define NAMED_SUBROUTINE(a,b,c,d) a,
746	#define NAMED_DERIVED_TYPE(a,b,c,d) a,
747	enum iso_fortran_env_symbol
748	{
749	ISOFORTRANENV_INVALID = -1,
750	#include "iso-fortran-env.def"
751	ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
752	};
753	#undef NAMED_INTCST
754	#undef NAMED_KINDARRAY
755	#undef NAMED_FUNCTION
756	#undef NAMED_SUBROUTINE
757	#undef NAMED_DERIVED_TYPE
758
759	#define NAMED_INTCST(a,b,c,d) a,
760	#define NAMED_REALCST(a,b,c,d) a,
761	#define NAMED_CMPXCST(a,b,c,d) a,
762	#define NAMED_LOGCST(a,b,c) a,
763	#define NAMED_CHARKNDCST(a,b,c) a,
764	#define NAMED_CHARCST(a,b,c) a,
765	#define DERIVED_TYPE(a,b,c) a,
766	#define NAMED_FUNCTION(a,b,c,d) a,
767	#define NAMED_SUBROUTINE(a,b,c,d) a,
768	enum iso_c_binding_symbol
769	{
770	ISOCBINDING_INVALID = -1,
771	#include "iso-c-binding.def"
772	ISOCBINDING_LAST,
773	ISOCBINDING_NUMBER = ISOCBINDING_LAST
774	};
775	#undef NAMED_INTCST
776	#undef NAMED_REALCST
777	#undef NAMED_CMPXCST
778	#undef NAMED_LOGCST
779	#undef NAMED_CHARKNDCST
780	#undef NAMED_CHARCST
781	#undef DERIVED_TYPE
782	#undef NAMED_FUNCTION
783	#undef NAMED_SUBROUTINE
784
785	enum intmod_id
786	{
787	INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING,
788	INTMOD_IEEE_FEATURES, INTMOD_IEEE_EXCEPTIONS, INTMOD_IEEE_ARITHMETIC
789	};
790
791	typedef struct
792	{
793	char name[GFC_MAX_SYMBOL_LEN + 1];
794	int value; /* Used for both integer and character values. */
795	bt f90_type;
796	}
797	CInteropKind_t;
798
799	/* Array of structs, where the structs represent the C interop kinds.
800	The list will be implemented based on a hash of the kind name since
801	these could be accessed multiple times.
802	Declared in trans-types.cc as a global, since it's in that file
803	that the list is initialized. */
804	extern CInteropKind_t c_interop_kinds_table[];
805
806	enum gfc_omp_device_type
807	{
808	OMP_DEVICE_TYPE_UNSET,
809	OMP_DEVICE_TYPE_HOST,
810	OMP_DEVICE_TYPE_NOHOST,
811	OMP_DEVICE_TYPE_ANY
812	};
813
814	enum gfc_omp_severity_type
815	{
816	OMP_SEVERITY_UNSET,
817	OMP_SEVERITY_WARNING,
818	OMP_SEVERITY_FATAL
819	};
820
821	enum gfc_omp_at_type
822	{
823	OMP_AT_UNSET,
824	OMP_AT_COMPILATION,
825	OMP_AT_EXECUTION
826	};
827
828	/* Structure and list of supported extension attributes. */
829	typedef enum
830	{
831	EXT_ATTR_DLLIMPORT = 0,
832	EXT_ATTR_DLLEXPORT,
833	EXT_ATTR_STDCALL,
834	EXT_ATTR_CDECL,
835	EXT_ATTR_FASTCALL,
836	EXT_ATTR_NO_ARG_CHECK,
837	EXT_ATTR_DEPRECATED,
838	EXT_ATTR_LAST, EXT_ATTR_NUM = EXT_ATTR_LAST
839	}
840	ext_attr_id_t;
841
842	typedef struct
843	{
844	const char *name;
845	unsigned id;
846	const char *middle_end_name;
847	}
848	ext_attr_t;
849
850	extern const ext_attr_t ext_attr_list[];
851
852	/* Symbol attribute structure. */
853	typedef struct
854	{
855	/* Variable attributes. */
856	unsigned allocatable:1, dimension:1, codimension:1, external:1, intrinsic:1,
857	optional:1, pointer:1, target:1, value:1, volatile_:1, temporary:1,
858	dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
859	implied_index:1, subref_array_pointer:1, proc_pointer:1, asynchronous:1,
860	contiguous:1, fe_temp: 1, automatic: 1;
861
862	/* For CLASS containers, the pointer attribute is sometimes set internally
863	even though it was not directly specified. In this case, keep the
864	"real" (original) value here. */
865	unsigned class_pointer:1;
866
867	ENUM_BITFIELD (save_state) save:2;
868
869	unsigned data:1, /* Symbol is named in a DATA statement. */
870	is_protected:1, /* Symbol has been marked as protected. */
871	use_assoc:1, /* Symbol has been use-associated. */
872	used_in_submodule:1, /* Symbol has been use-associated in a
873	submodule. Needed since these entities must
874	be set host associated to be compliant. */
875	use_only:1, /* Symbol has been use-associated, with ONLY. */
876	use_rename:1, /* Symbol has been use-associated and renamed. */
877	imported:1, /* Symbol has been associated by IMPORT. */
878	host_assoc:1; /* Symbol has been host associated. */
879
880	unsigned in_namelist:1, in_common:1, in_equivalence:1;
881	unsigned function:1, subroutine:1, procedure:1;
882	unsigned generic:1, generic_copy:1;
883	unsigned implicit_type:1; /* Type defined via implicit rules. */
884	unsigned untyped:1; /* No implicit type could be found. */
885
886	unsigned is_bind_c:1; /* say if is bound to C. */
887	unsigned extension:8; /* extension level of a derived type. */
888	unsigned is_class:1; /* is a CLASS container. */
889	unsigned class_ok:1; /* is a CLASS object with correct attributes. */
890	unsigned vtab:1; /* is a derived type vtab, pointed to by CLASS objects. */
891	unsigned vtype:1; /* is a derived type of a vtab. */
892
893	/* These flags are both in the typespec and attribute. The attribute
894	list is what gets read from/written to a module file. The typespec
895	is created from a decl being processed. */
896	unsigned is_c_interop:1; /* It's c interoperable. */
897	unsigned is_iso_c:1; /* Symbol is from iso_c_binding. */
898
899	/* Function/subroutine attributes */
900	unsigned sequence:1, elemental:1, pure:1, recursive:1;
901	unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
902
903	/* Set if this is a module function or subroutine. Note that it is an
904	attribute because it appears as a prefix in the declaration like
905	PURE, etc.. */
906	unsigned module_procedure:1;
907
908	/* Set if a (public) symbol [e.g. generic name] exposes this symbol,
909	which is relevant for private module procedures. */
910	unsigned public_used:1;
911
912	/* This is set if a contained procedure could be declared pure. This is
913	used for certain optimizations that require the result or arguments
914	cannot alias. Note that this is zero for PURE procedures. */
915	unsigned implicit_pure:1;
916
917	/* This is set for a procedure that contains expressions referencing
918	arrays coming from outside its namespace.
919	This is used to force the creation of a temporary when the LHS of
920	an array assignment may be used by an elemental procedure appearing
921	on the RHS. */
922	unsigned array_outer_dependency:1;
923
924	/* This is set if the subroutine doesn't return. Currently, this
925	is only possible for intrinsic subroutines. */
926	unsigned noreturn:1;
927
928	/* Set if this procedure is an alternate entry point. These procedures
929	don't have any code associated, and the backend will turn them into
930	thunks to the master function. */
931	unsigned entry:1;
932
933	/* Set if this is the master function for a procedure with multiple
934	entry points. */
935	unsigned entry_master:1;
936
937	/* Set if this is the master function for a function with multiple
938	entry points where characteristics of the entry points differ. */
939	unsigned mixed_entry_master:1;
940
941	/* Set if a function must always be referenced by an explicit interface. */
942	unsigned always_explicit:1;
943
944	/* Set if the symbol is generated and, hence, standard violations
945	shouldn't be flaged. */
946	unsigned artificial:1;
947
948	/* Set if the symbol has been referenced in an expression. No further
949	modification of type or type parameters is permitted. */
950	unsigned referenced:1;
951
952	/* Set if this is the symbol for the main program. */
953	unsigned is_main_program:1;
954
955	/* Mutually exclusive multibit attributes. */
956	ENUM_BITFIELD (gfc_access) access:2;
957	ENUM_BITFIELD (sym_intent) intent:2;
958	ENUM_BITFIELD (sym_flavor) flavor:4;
959	ENUM_BITFIELD (ifsrc) if_source:2;
960
961	ENUM_BITFIELD (procedure_type) proc:3;
962
963	/* Special attributes for Cray pointers, pointees. */
964	unsigned cray_pointer:1, cray_pointee:1;
965
966	/* The symbol is a derived type with allocatable components, pointer
967	components or private components, procedure pointer components,
968	possibly nested. zero_comp is true if the derived type has no
969	component at all. defined_assign_comp is true if the derived
970	type or a (sub-)component has a typebound defined assignment.
971	unlimited_polymorphic flags the type of the container for these
972	entities. */
973	unsigned alloc_comp:1, pointer_comp:1, proc_pointer_comp:1,
974	private_comp:1, zero_comp:1, coarray_comp:1, lock_comp:1,
975	event_comp:1, defined_assign_comp:1, unlimited_polymorphic:1,
976	has_dtio_procs:1, caf_token:1;
977
978	/* This is a temporary selector for SELECT TYPE/RANK or an associate
979	variable for SELECT TYPE/RANK or ASSOCIATE. */
980	unsigned select_type_temporary:1, select_rank_temporary:1, associate_var:1;
981
982	/* These are the attributes required for parameterized derived
983	types. */
984	unsigned pdt_kind:1, pdt_len:1, pdt_type:1, pdt_template:1,
985	pdt_array:1, pdt_string:1;
986
987	/* This is omp_{out,in,priv,orig} artificial variable in
988	!$OMP DECLARE REDUCTION. */
989	unsigned omp_udr_artificial_var:1;
990
991	/* Mentioned in OMP DECLARE TARGET. */
992	unsigned omp_declare_target:1;
993	unsigned omp_declare_target_link:1;
994	ENUM_BITFIELD (gfc_omp_device_type) omp_device_type:2;
995
996	/* Mentioned in OACC DECLARE. */
997	unsigned oacc_declare_create:1;
998	unsigned oacc_declare_copyin:1;
999	unsigned oacc_declare_deviceptr:1;
1000	unsigned oacc_declare_device_resident:1;
1001	unsigned oacc_declare_link:1;
1002
1003	/* OpenACC 'routine' directive's level of parallelism. */
1004	ENUM_BITFIELD (oacc_routine_lop) oacc_routine_lop:3;
1005	unsigned oacc_routine_nohost:1;
1006
1007	/* Attributes set by compiler extensions (!GCC$ ATTRIBUTES). */
1008	unsigned ext_attr:EXT_ATTR_NUM;
1009
1010	/* The namespace where the attribute has been set. */
1011	struct gfc_namespace *volatile_ns, *asynchronous_ns;
1012	}
1013	symbol_attribute;
1014
1015
1016	/* We need to store source lines as sequences of multibyte source
1017	characters. We define here a type wide enough to hold any multibyte
1018	source character, just like libcpp does. A 32-bit type is enough. */
1019
1020	#if HOST_BITS_PER_INT >= 32
1021	typedef unsigned int gfc_char_t;
1022	#elif HOST_BITS_PER_LONG >= 32
1023	typedef unsigned long gfc_char_t;
1024	#elif defined(HAVE_LONG_LONG) && (HOST_BITS_PER_LONGLONG >= 32)
1025	typedef unsigned long long gfc_char_t;
1026	#else
1027	# error "Cannot find an integer type with at least 32 bits"
1028	#endif
1029
1030
1031	/* The following three structures are used to identify a location in
1032	the sources.
1033
1034	gfc_file is used to maintain a tree of the source files and how
1035	they include each other
1036
1037	gfc_linebuf holds a single line of source code and information
1038	which file it resides in
1039
1040	locus point to the sourceline and the character in the source
1041	line.
1042	*/
1043
1044	typedef struct gfc_file
1045	{
1046	struct gfc_file *next, *up;
1047	int inclusion_line, line;
1048	char *filename;
1049	} gfc_file;
1050
1051	typedef struct gfc_linebuf
1052	{
1053	location_t location;
1054	struct gfc_file *file;
1055	struct gfc_linebuf *next;
1056
1057	int truncated;
1058	bool dbg_emitted;
1059
1060	gfc_char_t line[1];
1061	} gfc_linebuf;
1062
1063	#define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
1064
1065	#define gfc_linebuf_linenum(LBUF) (LOCATION_LINE ((LBUF)->location))
1066
1067	typedef struct
1068	{
1069	gfc_char_t *nextc;
1070	gfc_linebuf *lb;
1071	} locus;
1072
1073	/* In order for the "gfc" format checking to work correctly, you must
1074	have declared a typedef locus first. */
1075	#if GCC_VERSION >= 4001
1076	#define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
1077	#else
1078	#define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
1079	#endif
1080
1081
1082	/* Suppress error messages or re-enable them. */
1083
1084	void gfc_push_suppress_errors (void);
1085	void gfc_pop_suppress_errors (void);
1086	bool gfc_query_suppress_errors (void);
1087
1088
1089	/* Character length structures hold the expression that gives the
1090	length of a character variable. We avoid putting these into
1091	gfc_typespec because doing so prevents us from doing structure
1092	copies and forces us to deallocate any typespecs we create, as well
1093	as structures that contain typespecs. They also can have multiple
1094	character typespecs pointing to them.
1095
1096	These structures form a singly linked list within the current
1097	namespace and are deallocated with the namespace. It is possible to
1098	end up with gfc_charlen structures that have nothing pointing to them. */
1099
1100	typedef struct gfc_charlen
1101	{
1102	struct gfc_expr *length;
1103	struct gfc_charlen *next;
1104	bool length_from_typespec; /* Length from explicit array ctor typespec? */
1105	tree backend_decl;
1106	tree passed_length; /* Length argument explicitly passed. */
1107
1108	int resolved;
1109	}
1110	gfc_charlen;
1111
1112	#define gfc_get_charlen() XCNEW (gfc_charlen)
1113
1114	/* Type specification structure. */
1115	typedef struct
1116	{
1117	bt type;
1118	int kind;
1119
1120	union
1121	{
1122	struct gfc_symbol *derived; /* For derived types only. */
1123	gfc_charlen *cl; /* For character types only. */
1124	int pad; /* For hollerith types only. */
1125	}
1126	u;
1127
1128	struct gfc_symbol *interface; /* For PROCEDURE declarations. */
1129	int is_c_interop;
1130	int is_iso_c;
1131	bt f90_type;
1132	bool deferred;
1133	gfc_symbol *interop_kind;
1134	}
1135	gfc_typespec;
1136
1137	/* Array specification. */
1138	typedef struct
1139	{
1140	int rank; /* A scalar has a rank of 0, an assumed-rank array has -1. */
1141	int corank;
1142	array_type type, cotype;
1143	struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
1144
1145	/* These two fields are used with the Cray Pointer extension. */
1146	bool cray_pointee; /* True iff this spec belongs to a cray pointee. */
1147	bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
1148	AS_EXPLICIT, but we want to remember that we
1149	did this. */
1150
1151	bool resolved;
1152	}
1153	gfc_array_spec;
1154
1155	#define gfc_get_array_spec() XCNEW (gfc_array_spec)
1156
1157
1158	/* Components of derived types. */
1159	typedef struct gfc_component
1160	{
1161	const char *name;
1162	gfc_typespec ts;
1163
1164	symbol_attribute attr;
1165	gfc_array_spec *as;
1166
1167	tree backend_decl;
1168	/* Used to cache a FIELD_DECL matching this same component
1169	but applied to a different backend containing type that was
1170	generated by gfc_nonrestricted_type. */
1171	tree norestrict_decl;
1172	locus loc;
1173	struct gfc_expr *initializer;
1174	/* Used in parameterized derived type declarations to store parameterized
1175	kind expressions. */
1176	struct gfc_expr *kind_expr;
1177	struct gfc_actual_arglist *param_list;
1178
1179	struct gfc_component *next;
1180
1181	/* Needed for procedure pointer components. */
1182	struct gfc_typebound_proc *tb;
1183	/* When allocatable/pointer and in a coarray the associated token. */
1184	tree caf_token;
1185	}
1186	gfc_component;
1187
1188	#define gfc_get_component() XCNEW (gfc_component)
1189
1190	/* Formal argument lists are lists of symbols. */
1191	typedef struct gfc_formal_arglist
1192	{
1193	/* Symbol representing the argument at this position in the arglist. */
1194	struct gfc_symbol *sym;
1195	/* Points to the next formal argument. */
1196	struct gfc_formal_arglist *next;
1197	}
1198	gfc_formal_arglist;
1199
1200	#define gfc_get_formal_arglist() XCNEW (gfc_formal_arglist)
1201
1202
1203	struct gfc_dummy_arg;
1204
1205
1206	/* The gfc_actual_arglist structure is for actual arguments and
1207	for type parameter specification lists. */
1208	typedef struct gfc_actual_arglist
1209	{
1210	const char *name;
1211	/* Alternate return label when the expr member is null. */
1212	struct gfc_st_label *label;
1213
1214	gfc_param_spec_type spec_type;
1215
1216	struct gfc_expr *expr;
1217
1218	/* The dummy arg this actual arg is associated with, if the interface
1219	is explicit. NULL otherwise. */
1220	gfc_dummy_arg *associated_dummy;
1221
1222	struct gfc_actual_arglist *next;
1223	}
1224	gfc_actual_arglist;
1225
1226	#define gfc_get_actual_arglist() XCNEW (gfc_actual_arglist)
1227
1228
1229	/* Because a symbol can belong to multiple namelists, they must be
1230	linked externally to the symbol itself. */
1231	typedef struct gfc_namelist
1232	{
1233	struct gfc_symbol *sym;
1234	struct gfc_namelist *next;
1235	}
1236	gfc_namelist;
1237
1238	#define gfc_get_namelist() XCNEW (gfc_namelist)
1239
1240	/* Likewise to gfc_namelist, but contains expressions. */
1241	typedef struct gfc_expr_list
1242	{
1243	struct gfc_expr *expr;
1244	struct gfc_expr_list *next;
1245	}
1246	gfc_expr_list;
1247
1248	#define gfc_get_expr_list() XCNEW (gfc_expr_list)
1249
1250	enum gfc_omp_reduction_op
1251	{
1252	OMP_REDUCTION_NONE = -1,
1253	OMP_REDUCTION_PLUS = INTRINSIC_PLUS,
1254	OMP_REDUCTION_MINUS = INTRINSIC_MINUS,
1255	OMP_REDUCTION_TIMES = INTRINSIC_TIMES,
1256	OMP_REDUCTION_AND = INTRINSIC_AND,
1257	OMP_REDUCTION_OR = INTRINSIC_OR,
1258	OMP_REDUCTION_EQV = INTRINSIC_EQV,
1259	OMP_REDUCTION_NEQV = INTRINSIC_NEQV,
1260	OMP_REDUCTION_MAX = GFC_INTRINSIC_END,
1261	OMP_REDUCTION_MIN,
1262	OMP_REDUCTION_IAND,
1263	OMP_REDUCTION_IOR,
1264	OMP_REDUCTION_IEOR,
1265	OMP_REDUCTION_USER
1266	};
1267
1268	enum gfc_omp_depend_op
1269	{
1270	OMP_DEPEND_UNSET,
1271	OMP_DEPEND_IN,
1272	OMP_DEPEND_OUT,
1273	OMP_DEPEND_INOUT,
1274	OMP_DEPEND_INOUTSET,
1275	OMP_DEPEND_MUTEXINOUTSET,
1276	OMP_DEPEND_DEPOBJ,
1277	OMP_DEPEND_SINK_FIRST,
1278	OMP_DEPEND_SINK
1279	};
1280
1281	enum gfc_omp_map_op
1282	{
1283	OMP_MAP_ALLOC,
1284	OMP_MAP_IF_PRESENT,
1285	OMP_MAP_ATTACH,
1286	OMP_MAP_TO,
1287	OMP_MAP_FROM,
1288	OMP_MAP_TOFROM,
1289	OMP_MAP_DELETE,
1290	OMP_MAP_DETACH,
1291	OMP_MAP_FORCE_ALLOC,
1292	OMP_MAP_FORCE_TO,
1293	OMP_MAP_FORCE_FROM,
1294	OMP_MAP_FORCE_TOFROM,
1295	OMP_MAP_FORCE_PRESENT,
1296	OMP_MAP_FORCE_DEVICEPTR,
1297	OMP_MAP_DEVICE_RESIDENT,
1298	OMP_MAP_LINK,
1299	OMP_MAP_RELEASE,
1300	OMP_MAP_ALWAYS_TO,
1301	OMP_MAP_ALWAYS_FROM,
1302	OMP_MAP_ALWAYS_TOFROM
1303	};
1304
1305	enum gfc_omp_defaultmap
1306	{
1307	OMP_DEFAULTMAP_UNSET,
1308	OMP_DEFAULTMAP_ALLOC,
1309	OMP_DEFAULTMAP_TO,
1310	OMP_DEFAULTMAP_FROM,
1311	OMP_DEFAULTMAP_TOFROM,
1312	OMP_DEFAULTMAP_FIRSTPRIVATE,
1313	OMP_DEFAULTMAP_NONE,
1314	OMP_DEFAULTMAP_DEFAULT,
1315	OMP_DEFAULTMAP_PRESENT
1316	};
1317
1318	enum gfc_omp_defaultmap_category
1319	{
1320	OMP_DEFAULTMAP_CAT_UNCATEGORIZED,
1321	OMP_DEFAULTMAP_CAT_SCALAR,
1322	OMP_DEFAULTMAP_CAT_AGGREGATE,
1323	OMP_DEFAULTMAP_CAT_ALLOCATABLE,
1324	OMP_DEFAULTMAP_CAT_POINTER,
1325	OMP_DEFAULTMAP_CAT_NUM
1326	};
1327
1328	enum gfc_omp_linear_op
1329	{
1330	OMP_LINEAR_DEFAULT,
1331	OMP_LINEAR_REF,
1332	OMP_LINEAR_VAL,
1333	OMP_LINEAR_UVAL
1334	};
1335
1336	/* For use in OpenMP clauses in case we need extra information
1337	(aligned clause alignment, linear clause step, etc.). */
1338
1339	typedef struct gfc_omp_namelist
1340	{
1341	struct gfc_symbol *sym;
1342	struct gfc_expr *expr;
1343	union
1344	{
1345	gfc_omp_reduction_op reduction_op;
1346	gfc_omp_depend_op depend_op;
1347	gfc_omp_map_op map_op;
1348	struct
1349	{
1350	ENUM_BITFIELD (gfc_omp_linear_op) op:4;
1351	bool old_modifier;
1352	} linear;
1353	struct gfc_common_head *common;
1354	bool lastprivate_conditional;
1355	} u;
1356	union
1357	{
1358	struct gfc_omp_namelist_udr *udr;
1359	gfc_namespace *ns;
1360	} u2;
1361	struct gfc_omp_namelist *next;
1362	locus where;
1363	}
1364	gfc_omp_namelist;
1365
1366	#define gfc_get_omp_namelist() XCNEW (gfc_omp_namelist)
1367
1368	enum
1369	{
1370	OMP_LIST_FIRST,
1371	OMP_LIST_PRIVATE = OMP_LIST_FIRST,
1372	OMP_LIST_FIRSTPRIVATE,
1373	OMP_LIST_LASTPRIVATE,
1374	OMP_LIST_COPYPRIVATE,
1375	OMP_LIST_SHARED,
1376	OMP_LIST_COPYIN,
1377	OMP_LIST_UNIFORM,
1378	OMP_LIST_AFFINITY,
1379	OMP_LIST_ALIGNED,
1380	OMP_LIST_LINEAR,
1381	OMP_LIST_DEPEND,
1382	OMP_LIST_MAP,
1383	OMP_LIST_TO,
1384	OMP_LIST_FROM,
1385	OMP_LIST_SCAN_IN,
1386	OMP_LIST_SCAN_EX,
1387	OMP_LIST_REDUCTION,
1388	OMP_LIST_REDUCTION_INSCAN,
1389	OMP_LIST_REDUCTION_TASK,
1390	OMP_LIST_IN_REDUCTION,
1391	OMP_LIST_TASK_REDUCTION,
1392	OMP_LIST_DEVICE_RESIDENT,
1393	OMP_LIST_LINK,
1394	OMP_LIST_USE_DEVICE,
1395	OMP_LIST_CACHE,
1396	OMP_LIST_IS_DEVICE_PTR,
1397	OMP_LIST_USE_DEVICE_PTR,
1398	OMP_LIST_USE_DEVICE_ADDR,
1399	OMP_LIST_NONTEMPORAL,
1400	OMP_LIST_ALLOCATE,
1401	OMP_LIST_HAS_DEVICE_ADDR,
1402	OMP_LIST_ENTER,
1403	OMP_LIST_NUM /* Must be the last. */
1404	};
1405
1406	/* Because a symbol can belong to multiple namelists, they must be
1407	linked externally to the symbol itself. */
1408
1409	enum gfc_omp_sched_kind
1410	{
1411	OMP_SCHED_NONE,
1412	OMP_SCHED_STATIC,
1413	OMP_SCHED_DYNAMIC,
1414	OMP_SCHED_GUIDED,
1415	OMP_SCHED_RUNTIME,
1416	OMP_SCHED_AUTO
1417	};
1418
1419	enum gfc_omp_default_sharing
1420	{
1421	OMP_DEFAULT_UNKNOWN,
1422	OMP_DEFAULT_NONE,
1423	OMP_DEFAULT_PRIVATE,
1424	OMP_DEFAULT_SHARED,
1425	OMP_DEFAULT_FIRSTPRIVATE,
1426	OMP_DEFAULT_PRESENT
1427	};
1428
1429	enum gfc_omp_proc_bind_kind
1430	{
1431	OMP_PROC_BIND_UNKNOWN,
1432	OMP_PROC_BIND_PRIMARY,
1433	OMP_PROC_BIND_MASTER,
1434	OMP_PROC_BIND_SPREAD,
1435	OMP_PROC_BIND_CLOSE
1436	};
1437
1438	enum gfc_omp_cancel_kind
1439	{
1440	OMP_CANCEL_UNKNOWN,
1441	OMP_CANCEL_PARALLEL,
1442	OMP_CANCEL_SECTIONS,
1443	OMP_CANCEL_DO,
1444	OMP_CANCEL_TASKGROUP
1445	};
1446
1447	enum gfc_omp_if_kind
1448	{
1449	OMP_IF_CANCEL,
1450	OMP_IF_PARALLEL,
1451	OMP_IF_SIMD,
1452	OMP_IF_TASK,
1453	OMP_IF_TASKLOOP,
1454	OMP_IF_TARGET,
1455	OMP_IF_TARGET_DATA,
1456	OMP_IF_TARGET_UPDATE,
1457	OMP_IF_TARGET_ENTER_DATA,
1458	OMP_IF_TARGET_EXIT_DATA,
1459	OMP_IF_LAST
1460	};
1461
1462	enum gfc_omp_atomic_op
1463	{
1464	GFC_OMP_ATOMIC_UNSET = 0,
1465	GFC_OMP_ATOMIC_UPDATE = 1,
1466	GFC_OMP_ATOMIC_READ = 2,
1467	GFC_OMP_ATOMIC_WRITE = 3,
1468	GFC_OMP_ATOMIC_MASK = 3,
1469	GFC_OMP_ATOMIC_SWAP = 16
1470	};
1471
1472	enum gfc_omp_requires_kind
1473	{
1474	/* Keep in sync with gfc_namespace, esp. with omp_req_mem_order. */
1475	OMP_REQ_ATOMIC_MEM_ORDER_SEQ_CST = 1, /* 01 */
1476	OMP_REQ_ATOMIC_MEM_ORDER_ACQ_REL = 2, /* 10 */
1477	OMP_REQ_ATOMIC_MEM_ORDER_RELAXED = 3, /* 11 */
1478	OMP_REQ_REVERSE_OFFLOAD = (1 << 2),
1479	OMP_REQ_UNIFIED_ADDRESS = (1 << 3),
1480	OMP_REQ_UNIFIED_SHARED_MEMORY = (1 << 4),
1481	OMP_REQ_DYNAMIC_ALLOCATORS = (1 << 5),
1482	OMP_REQ_TARGET_MASK = (OMP_REQ_REVERSE_OFFLOAD
1483	| OMP_REQ_UNIFIED_ADDRESS
1484	| OMP_REQ_UNIFIED_SHARED_MEMORY),
1485	OMP_REQ_ATOMIC_MEM_ORDER_MASK = (OMP_REQ_ATOMIC_MEM_ORDER_SEQ_CST
1486	| OMP_REQ_ATOMIC_MEM_ORDER_ACQ_REL
1487	| OMP_REQ_ATOMIC_MEM_ORDER_RELAXED)
1488	};
1489
1490	enum gfc_omp_memorder
1491	{
1492	OMP_MEMORDER_UNSET,
1493	OMP_MEMORDER_SEQ_CST,
1494	OMP_MEMORDER_ACQ_REL,
1495	OMP_MEMORDER_RELEASE,
1496	OMP_MEMORDER_ACQUIRE,
1497	OMP_MEMORDER_RELAXED
1498	};
1499
1500	enum gfc_omp_bind_type
1501	{
1502	OMP_BIND_UNSET,
1503	OMP_BIND_TEAMS,
1504	OMP_BIND_PARALLEL,
1505	OMP_BIND_THREAD
1506	};
1507
1508	typedef struct gfc_omp_clauses
1509	{
1510	gfc_omp_namelist *lists[OMP_LIST_NUM];
1511	struct gfc_expr *if_expr;
1512	struct gfc_expr *final_expr;
1513	struct gfc_expr *num_threads;
1514	struct gfc_expr *chunk_size;
1515	struct gfc_expr *safelen_expr;
1516	struct gfc_expr *simdlen_expr;
1517	struct gfc_expr *num_teams_lower;
1518	struct gfc_expr *num_teams_upper;
1519	struct gfc_expr *device;
1520	struct gfc_expr *thread_limit;
1521	struct gfc_expr *grainsize;
1522	struct gfc_expr *filter;
1523	struct gfc_expr *hint;
1524	struct gfc_expr *num_tasks;
1525	struct gfc_expr *priority;
1526	struct gfc_expr *detach;
1527	struct gfc_expr *depobj;
1528	struct gfc_expr *if_exprs[OMP_IF_LAST];
1529	struct gfc_expr *dist_chunk_size;
1530	struct gfc_expr *message;
1531	const char *critical_name;
1532	enum gfc_omp_default_sharing default_sharing;
1533	enum gfc_omp_atomic_op atomic_op;
1534	enum gfc_omp_defaultmap defaultmap[OMP_DEFAULTMAP_CAT_NUM];
1535	int collapse, orderedc;
1536	unsigned nowait:1, ordered:1, untied:1, mergeable:1, ancestor:1;
1537	unsigned inbranch:1, notinbranch:1, nogroup:1;
1538	unsigned sched_simd:1, sched_monotonic:1, sched_nonmonotonic:1;
1539	unsigned simd:1, threads:1, depend_source:1, destroy:1, order_concurrent:1;
1540	unsigned order_unconstrained:1, order_reproducible:1, capture:1;
1541	unsigned grainsize_strict:1, num_tasks_strict:1, compare:1, weak:1;
1542	unsigned non_rectangular:1;
1543	ENUM_BITFIELD (gfc_omp_sched_kind) sched_kind:3;
1544	ENUM_BITFIELD (gfc_omp_device_type) device_type:2;
1545	ENUM_BITFIELD (gfc_omp_memorder) memorder:3;
1546	ENUM_BITFIELD (gfc_omp_memorder) fail:3;
1547	ENUM_BITFIELD (gfc_omp_cancel_kind) cancel:3;
1548	ENUM_BITFIELD (gfc_omp_proc_bind_kind) proc_bind:3;
1549	ENUM_BITFIELD (gfc_omp_depend_op) depobj_update:4;
1550	ENUM_BITFIELD (gfc_omp_bind_type) bind:2;
1551	ENUM_BITFIELD (gfc_omp_at_type) at:2;
1552	ENUM_BITFIELD (gfc_omp_severity_type) severity:2;
1553	ENUM_BITFIELD (gfc_omp_sched_kind) dist_sched_kind:3;
1554
1555	/* OpenACC. */
1556	struct gfc_expr *async_expr;
1557	struct gfc_expr *gang_static_expr;
1558	struct gfc_expr *gang_num_expr;
1559	struct gfc_expr *worker_expr;
1560	struct gfc_expr *vector_expr;
1561	struct gfc_expr *num_gangs_expr;
1562	struct gfc_expr *num_workers_expr;
1563	struct gfc_expr *vector_length_expr;
1564	gfc_expr_list *wait_list;
1565	gfc_expr_list *tile_list;
1566	unsigned async:1, gang:1, worker:1, vector:1, seq:1, independent:1;
1567	unsigned par_auto:1, gang_static:1;
1568	unsigned if_present:1, finalize:1;
1569	unsigned nohost:1;
1570	locus loc;
1571	}
1572	gfc_omp_clauses;
1573
1574	#define gfc_get_omp_clauses() XCNEW (gfc_omp_clauses)
1575
1576
1577	/* Node in the linked list used for storing !$oacc declare constructs. */
1578
1579	typedef struct gfc_oacc_declare
1580	{
1581	struct gfc_oacc_declare *next;
1582	bool module_var;
1583	gfc_omp_clauses *clauses;
1584	locus loc;
1585	}
1586	gfc_oacc_declare;
1587
1588	#define gfc_get_oacc_declare() XCNEW (gfc_oacc_declare)
1589
1590
1591	/* Node in the linked list used for storing !$omp declare simd constructs. */
1592
1593	typedef struct gfc_omp_declare_simd
1594	{
1595	struct gfc_omp_declare_simd *next;
1596	locus where; /* Where the !$omp declare simd construct occurred. */
1597
1598	gfc_symbol *proc_name;
1599
1600	gfc_omp_clauses *clauses;
1601	}
1602	gfc_omp_declare_simd;
1603	#define gfc_get_omp_declare_simd() XCNEW (gfc_omp_declare_simd)
1604
1605
1606	enum gfc_omp_trait_property_kind
1607	{
1608	CTX_PROPERTY_NONE,
1609	CTX_PROPERTY_USER,
1610	CTX_PROPERTY_NAME_LIST,
1611	CTX_PROPERTY_ID,
1612	CTX_PROPERTY_EXPR,
1613	CTX_PROPERTY_SIMD
1614	};
1615
1616	typedef struct gfc_omp_trait_property
1617	{
1618	struct gfc_omp_trait_property *next;
1619	enum gfc_omp_trait_property_kind property_kind;
1620	bool is_name : 1;
1621
1622	union
1623	{
1624	gfc_expr *expr;
1625	gfc_symbol *sym;
1626	gfc_omp_clauses *clauses;
1627	char *name;
1628	};
1629	} gfc_omp_trait_property;
1630	#define gfc_get_omp_trait_property() XCNEW (gfc_omp_trait_property)
1631
1632	typedef struct gfc_omp_selector
1633	{
1634	struct gfc_omp_selector *next;
1635
1636	char *trait_selector_name;
1637	gfc_expr *score;
1638	struct gfc_omp_trait_property *properties;
1639	} gfc_omp_selector;
1640	#define gfc_get_omp_selector() XCNEW (gfc_omp_selector)
1641
1642	typedef struct gfc_omp_set_selector
1643	{
1644	struct gfc_omp_set_selector *next;
1645
1646	const char *trait_set_selector_name;
1647	struct gfc_omp_selector *trait_selectors;
1648	} gfc_omp_set_selector;
1649	#define gfc_get_omp_set_selector() XCNEW (gfc_omp_set_selector)
1650
1651
1652	/* Node in the linked list used for storing !$omp declare variant
1653	constructs. */
1654
1655	typedef struct gfc_omp_declare_variant
1656	{
1657	struct gfc_omp_declare_variant *next;
1658	locus where; /* Where the !$omp declare variant construct occurred. */
1659
1660	struct gfc_symtree *base_proc_symtree;
1661	struct gfc_symtree *variant_proc_symtree;
1662
1663	gfc_omp_set_selector *set_selectors;
1664
1665	bool checked_p : 1; /* Set if previously checked for errors. */
1666	bool error_p : 1; /* Set if error found in directive. */
1667	}
1668	gfc_omp_declare_variant;
1669	#define gfc_get_omp_declare_variant() XCNEW (gfc_omp_declare_variant)
1670
1671
1672	typedef struct gfc_omp_udr
1673	{
1674	struct gfc_omp_udr *next;
1675	locus where; /* Where the !$omp declare reduction construct occurred. */
1676
1677	const char *name;
1678	gfc_typespec ts;
1679	gfc_omp_reduction_op rop;
1680
1681	struct gfc_symbol *omp_out;
1682	struct gfc_symbol *omp_in;
1683	struct gfc_namespace *combiner_ns;
1684
1685	struct gfc_symbol *omp_priv;
1686	struct gfc_symbol *omp_orig;
1687	struct gfc_namespace *initializer_ns;
1688	}
1689	gfc_omp_udr;
1690	#define gfc_get_omp_udr() XCNEW (gfc_omp_udr)
1691
1692	typedef struct gfc_omp_namelist_udr
1693	{
1694	struct gfc_omp_udr *udr;
1695	struct gfc_code *combiner;
1696	struct gfc_code *initializer;
1697	}
1698	gfc_omp_namelist_udr;
1699	#define gfc_get_omp_namelist_udr() XCNEW (gfc_omp_namelist_udr)
1700
1701	/* The gfc_st_label structure is a BBT attached to a namespace that
1702	records the usage of statement labels within that space. */
1703
1704	typedef struct gfc_st_label
1705	{
1706	BBT_HEADER(gfc_st_label);
1707
1708	int value;
1709
1710	gfc_sl_type defined, referenced;
1711
1712	struct gfc_expr *format;
1713
1714	tree backend_decl;
1715
1716	locus where;
1717
1718	gfc_namespace *ns;
1719	}
1720	gfc_st_label;
1721
1722
1723	/* gfc_interface()-- Interfaces are lists of symbols strung together. */
1724	typedef struct gfc_interface
1725	{
1726	struct gfc_symbol *sym;
1727	locus where;
1728	struct gfc_interface *next;
1729	}
1730	gfc_interface;
1731
1732	#define gfc_get_interface() XCNEW (gfc_interface)
1733
1734	/* User operator nodes. These are like stripped down symbols. */
1735	typedef struct
1736	{
1737	const char *name;
1738
1739	gfc_interface *op;
1740	struct gfc_namespace *ns;
1741	gfc_access access;
1742	}
1743	gfc_user_op;
1744
1745
1746	/* A list of specific bindings that are associated with a generic spec. */
1747	typedef struct gfc_tbp_generic
1748	{
1749	/* The parser sets specific_st, upon resolution we look for the corresponding
1750	gfc_typebound_proc and set specific for further use. */
1751	struct gfc_symtree* specific_st;
1752	struct gfc_typebound_proc* specific;
1753
1754	struct gfc_tbp_generic* next;
1755	bool is_operator;
1756	}
1757	gfc_tbp_generic;
1758
1759	#define gfc_get_tbp_generic() XCNEW (gfc_tbp_generic)
1760
1761
1762	/* Data needed for type-bound procedures. */
1763	typedef struct gfc_typebound_proc
1764	{
1765	locus where; /* Where the PROCEDURE/GENERIC definition was. */
1766
1767	union
1768	{
1769	struct gfc_symtree* specific; /* The interface if DEFERRED. */
1770	gfc_tbp_generic* generic;
1771	}
1772	u;
1773
1774	gfc_access access;
1775	const char* pass_arg; /* Argument-name for PASS. NULL if not specified. */
1776
1777	/* The overridden type-bound proc (or GENERIC with this name in the
1778	parent-type) or NULL if non. */
1779	struct gfc_typebound_proc* overridden;
1780
1781	/* Once resolved, we use the position of pass_arg in the formal arglist of
1782	the binding-target procedure to identify it. The first argument has
1783	number 1 here, the second 2, and so on. */
1784	unsigned pass_arg_num;
1785
1786	unsigned nopass:1; /* Whether we have NOPASS (PASS otherwise). */
1787	unsigned non_overridable:1;
1788	unsigned deferred:1;
1789	unsigned is_generic:1;
1790	unsigned function:1, subroutine:1;
1791	unsigned error:1; /* Ignore it, when an error occurred during resolution. */
1792	unsigned ppc:1;
1793	}
1794	gfc_typebound_proc;
1795
1796
1797	/* Symbol nodes. These are important things. They are what the
1798	standard refers to as "entities". The possibly multiple names that
1799	refer to the same entity are accomplished by a binary tree of
1800	symtree structures that is balanced by the red-black method-- more
1801	than one symtree node can point to any given symbol. */
1802
1803	typedef struct gfc_symbol
1804	{
1805	const char *name; /* Primary name, before renaming */
1806	const char *module; /* Module this symbol came from */
1807	locus declared_at;
1808
1809	gfc_typespec ts;
1810	symbol_attribute attr;
1811
1812	/* The formal member points to the formal argument list if the
1813	symbol is a function or subroutine name. If the symbol is a
1814	generic name, the generic member points to the list of
1815	interfaces. */
1816
1817	gfc_interface *generic;
1818	gfc_access component_access;
1819
1820	gfc_formal_arglist *formal;
1821	struct gfc_namespace *formal_ns;
1822	struct gfc_namespace *f2k_derived;
1823
1824	/* List of PDT parameter expressions */
1825	struct gfc_actual_arglist *param_list;
1826
1827	struct gfc_expr *value; /* Parameter/Initializer value */
1828	gfc_array_spec *as;
1829	struct gfc_symbol *result; /* function result symbol */
1830	gfc_component *components; /* Derived type components */
1831
1832	/* Defined only for Cray pointees; points to their pointer. */
1833	struct gfc_symbol *cp_pointer;
1834
1835	int entry_id; /* Used in resolve.cc for entries. */
1836
1837	/* CLASS hashed name for declared and dynamic types in the class. */
1838	int hash_value;
1839
1840	struct gfc_symbol *common_next; /* Links for COMMON syms */
1841
1842	/* This is only used for pointer comparisons to check if symbols
1843	are in the same common block.
1844	In opposition to common_block, the common_head pointer takes into account
1845	equivalences: if A is in a common block C and A and B are in equivalence,
1846	then both A and B have common_head pointing to C, while A's common_block
1847	points to C and B's is NULL. */
1848	struct gfc_common_head* common_head;
1849
1850	/* Make sure setup code for dummy arguments is generated in the correct
1851	order. */
1852	int dummy_order;
1853
1854	gfc_namelist *namelist, *namelist_tail;
1855
1856	/* Change management fields. Symbols that might be modified by the
1857	current statement have the mark member nonzero. Of these symbols,
1858	symbols with old_symbol equal to NULL are symbols created within
1859	the current statement. Otherwise, old_symbol points to a copy of
1860	the old symbol. gfc_new is used in symbol.cc to flag new symbols.
1861	comp_mark is used to indicate variables which have component accesses
1862	in OpenMP/OpenACC directive clauses. */
1863	struct gfc_symbol *old_symbol;
1864	unsigned mark:1, comp_mark:1, gfc_new:1;
1865
1866	/* The tlink field is used in the front end to carry the module
1867	declaration of separate module procedures so that the characteristics
1868	can be compared with the corresponding declaration in a submodule. In
1869	translation this field carries a linked list of symbols that require
1870	deferred initialization. */
1871	struct gfc_symbol *tlink;
1872
1873	/* Nonzero if all equivalences associated with this symbol have been
1874	processed. */
1875	unsigned equiv_built:1;
1876	/* Set if this variable is used as an index name in a FORALL. */
1877	unsigned forall_index:1;
1878	/* Set if the symbol is used in a function result specification . */
1879	unsigned fn_result_spec:1;
1880	/* Used to avoid multiple resolutions of a single symbol. */
1881	/* = 2 if this has already been resolved as an intrinsic,
1882	in gfc_resolve_intrinsic,
1883	= 1 if it has been resolved in resolve_symbol. */
1884	unsigned resolve_symbol_called:2;
1885	/* Set if this is a module function or subroutine with the
1886	abreviated declaration in a submodule. */
1887	unsigned abr_modproc_decl:1;
1888	/* Set if a previous error or warning has occurred and no other
1889	should be reported. */
1890	unsigned error:1;
1891	/* Set if the dummy argument of a procedure could be an array despite
1892	being called with a scalar actual argument. */
1893	unsigned maybe_array:1;
1894	/* Set if this should be passed by value, but is not a VALUE argument
1895	according to the Fortran standard. */
1896	unsigned pass_as_value:1;
1897
1898	int refs;
1899	struct gfc_namespace *ns; /* namespace containing this symbol */
1900
1901	tree backend_decl;
1902
1903	/* Identity of the intrinsic module the symbol comes from, or
1904	INTMOD_NONE if it's not imported from a intrinsic module. */
1905	intmod_id from_intmod;
1906	/* Identity of the symbol from intrinsic modules, from enums maintained
1907	separately by each intrinsic module. Used together with from_intmod,
1908	it uniquely identifies a symbol from an intrinsic module. */
1909	int intmod_sym_id;
1910
1911	/* This may be repetitive, since the typespec now has a binding
1912	label field. */
1913	const char* binding_label;
1914	/* Store a reference to the common_block, if this symbol is in one. */
1915	struct gfc_common_head *common_block;
1916
1917	/* Link to corresponding association-list if this is an associate name. */
1918	struct gfc_association_list *assoc;
1919
1920	/* Link to next entry in derived type list */
1921	struct gfc_symbol *dt_next;
1922	}
1923	gfc_symbol;
1924
1925
1926	struct gfc_undo_change_set
1927	{
1928	vec<gfc_symbol *> syms;
1929	vec<gfc_typebound_proc *> tbps;
1930	gfc_undo_change_set *previous;
1931	};
1932
1933
1934	/* This structure is used to keep track of symbols in common blocks. */
1935	typedef struct gfc_common_head
1936	{
1937	locus where;
1938	char use_assoc, saved, threadprivate;
1939	unsigned char omp_declare_target : 1;
1940	unsigned char omp_declare_target_link : 1;
1941	ENUM_BITFIELD (gfc_omp_device_type) omp_device_type:2;
1942	/* Provide sufficient space to hold "symbol.symbol.eq.1234567890". */
1943	char name[2*GFC_MAX_SYMBOL_LEN + 1 + 14 + 1];
1944	struct gfc_symbol *head;
1945	const char* binding_label;
1946	int is_bind_c;
1947	int refs;
1948	}
1949	gfc_common_head;
1950
1951	#define gfc_get_common_head() XCNEW (gfc_common_head)
1952
1953
1954	/* A list of all the alternate entry points for a procedure. */
1955
1956	typedef struct gfc_entry_list
1957	{
1958	/* The symbol for this entry point. */
1959	gfc_symbol *sym;
1960	/* The zero-based id of this entry point. */
1961	int id;
1962	/* The LABEL_EXPR marking this entry point. */
1963	tree label;
1964	/* The next item in the list. */
1965	struct gfc_entry_list *next;
1966	}
1967	gfc_entry_list;
1968
1969	#define gfc_get_entry_list() XCNEW (gfc_entry_list)
1970
1971	/* Lists of rename info for the USE statement. */
1972
1973	typedef struct gfc_use_rename
1974	{
1975	char local_name[GFC_MAX_SYMBOL_LEN + 1], use_name[GFC_MAX_SYMBOL_LEN + 1];
1976	struct gfc_use_rename *next;
1977	int found;
1978	gfc_intrinsic_op op;
1979	locus where;
1980	}
1981	gfc_use_rename;
1982
1983	#define gfc_get_use_rename() XCNEW (gfc_use_rename);
1984
1985	/* A list of all USE statements in a namespace. */
1986
1987	typedef struct gfc_use_list
1988	{
1989	const char *module_name;
1990	const char *submodule_name;
1991	bool intrinsic;
1992	bool non_intrinsic;
1993	bool only_flag;
1994	struct gfc_use_rename *rename;
1995	locus where;
1996	/* Next USE statement. */
1997	struct gfc_use_list *next;
1998	}
1999	gfc_use_list;
2000
2001	#define gfc_get_use_list() XCNEW (gfc_use_list)
2002
2003	/* Within a namespace, symbols are pointed to by symtree nodes that
2004	are linked together in a balanced binary tree. There can be
2005	several symtrees pointing to the same symbol node via USE
2006	statements. */
2007
2008	typedef struct gfc_symtree
2009	{
2010	BBT_HEADER (gfc_symtree);
2011	const char *name;
2012	int ambiguous;
2013	union
2014	{
2015	gfc_symbol *sym; /* Symbol associated with this node */
2016	gfc_user_op *uop;
2017	gfc_common_head *common;
2018	gfc_typebound_proc *tb;
2019	gfc_omp_udr *omp_udr;
2020	}
2021	n;
2022	}
2023	gfc_symtree;
2024
2025	/* A list of all derived types. */
2026	extern gfc_symbol *gfc_derived_types;
2027
2028	typedef struct gfc_oacc_routine_name
2029	{
2030	struct gfc_symbol *sym;
2031	struct gfc_omp_clauses *clauses;
2032	struct gfc_oacc_routine_name *next;
2033	locus loc;
2034	}
2035	gfc_oacc_routine_name;
2036
2037	#define gfc_get_oacc_routine_name() XCNEW (gfc_oacc_routine_name)
2038
2039	/* Node in linked list to see what has already been finalized
2040	earlier. */
2041
2042	typedef struct gfc_was_finalized {
2043	gfc_expr *e;
2044	gfc_component *c;
2045	struct gfc_was_finalized *next;
2046	}
2047	gfc_was_finalized;
2048
2049	/* A namespace describes the contents of procedure, module, interface block
2050	or BLOCK construct. */
2051	/* ??? Anything else use these? */
2052
2053	typedef struct gfc_namespace
2054	{
2055	/* Tree containing all the symbols in this namespace. */
2056	gfc_symtree *sym_root;
2057	/* Tree containing all the user-defined operators in the namespace. */
2058	gfc_symtree *uop_root;
2059	/* Tree containing all the common blocks. */
2060	gfc_symtree *common_root;
2061	/* Tree containing all the OpenMP user defined reductions. */
2062	gfc_symtree *omp_udr_root;
2063
2064	/* Tree containing type-bound procedures. */
2065	gfc_symtree *tb_sym_root;
2066	/* Type-bound user operators. */
2067	gfc_symtree *tb_uop_root;
2068	/* For derived-types, store type-bound intrinsic operators here. */
2069	gfc_typebound_proc *tb_op[GFC_INTRINSIC_OPS];
2070	/* Linked list of finalizer procedures. */
2071	struct gfc_finalizer *finalizers;
2072
2073	/* If set_flag[letter] is set, an implicit type has been set for letter. */
2074	int set_flag[GFC_LETTERS];
2075	/* Keeps track of the implicit types associated with the letters. */
2076	gfc_typespec default_type[GFC_LETTERS];
2077	/* Store the positions of IMPLICIT statements. */
2078	locus implicit_loc[GFC_LETTERS];
2079
2080	/* If this is a namespace of a procedure, this points to the procedure. */
2081	struct gfc_symbol *proc_name;
2082	/* If this is the namespace of a unit which contains executable
2083	code, this points to it. */
2084	struct gfc_code *code;
2085
2086	/* Points to the equivalences set up in this namespace. */
2087	struct gfc_equiv *equiv, *old_equiv;
2088
2089	/* Points to the equivalence groups produced by trans_common. */
2090	struct gfc_equiv_list *equiv_lists;
2091
2092	gfc_interface *op[GFC_INTRINSIC_OPS];
2093
2094	/* Points to the parent namespace, i.e. the namespace of a module or
2095	procedure in which the procedure belonging to this namespace is
2096	contained. The parent namespace points to this namespace either
2097	directly via CONTAINED, or indirectly via the chain built by
2098	SIBLING. */
2099	struct gfc_namespace *parent;
2100	/* CONTAINED points to the first contained namespace. Sibling
2101	namespaces are chained via SIBLING. */
2102	struct gfc_namespace *contained, *sibling;
2103
2104	gfc_common_head blank_common;
2105	gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
2106
2107	gfc_st_label *st_labels;
2108	/* This list holds information about all the data initializers in
2109	this namespace. */
2110	struct gfc_data *data, *old_data;
2111
2112	/* !$ACC DECLARE. */
2113	gfc_oacc_declare *oacc_declare;
2114
2115	/* !$ACC ROUTINE clauses. */
2116	gfc_omp_clauses *oacc_routine_clauses;
2117
2118	/* !$ACC TASK AFFINITY iterator symbols. */
2119	gfc_symbol *omp_affinity_iterators;
2120
2121	/* !$ACC ROUTINE names. */
2122	gfc_oacc_routine_name *oacc_routine_names;
2123
2124	gfc_charlen *cl_list;
2125
2126	gfc_symbol *derived_types;
2127
2128	int save_all, seen_save, seen_implicit_none;
2129
2130	/* Normally we don't need to refcount namespaces. However when we read
2131	a module containing a function with multiple entry points, this
2132	will appear as several functions with the same formal namespace. */
2133	int refs;
2134
2135	/* A list of all alternate entry points to this procedure (or NULL). */
2136	gfc_entry_list *entries;
2137
2138	/* A list of USE statements in this namespace. */
2139	gfc_use_list *use_stmts;
2140
2141	/* Linked list of !$omp declare simd constructs. */
2142	struct gfc_omp_declare_simd *omp_declare_simd;
2143
2144	/* Linked list of !$omp declare variant constructs. */
2145	struct gfc_omp_declare_variant *omp_declare_variant;
2146
2147	/* A hash set for the gfc expressions that have already
2148	been finalized in this namespace. */
2149
2150	gfc_was_finalized *was_finalized;
2151
2152	/* Set to 1 if namespace is a BLOCK DATA program unit. */
2153	unsigned is_block_data:1;
2154
2155	/* Set to 1 if namespace is an interface body with "IMPORT" used. */
2156	unsigned has_import_set:1;
2157
2158	/* Set to 1 if the namespace uses "IMPLICT NONE (export)". */
2159	unsigned has_implicit_none_export:1;
2160
2161	/* Set to 1 if resolved has been called for this namespace.
2162	Holds -1 during resolution. */
2163	signed resolved:2;
2164
2165	/* Set when resolve_types has been called for this namespace. */
2166	unsigned types_resolved:1;
2167
2168	/* Set to 1 if code has been generated for this namespace. */
2169	unsigned translated:1;
2170
2171	/* Set to 1 if symbols in this namespace should be 'construct entities',
2172	i.e. for BLOCK local variables. */
2173	unsigned construct_entities:1;
2174
2175	/* Set to 1 for !$OMP DECLARE REDUCTION namespaces. */
2176	unsigned omp_udr_ns:1;
2177
2178	/* Set to 1 for !$ACC ROUTINE namespaces. */
2179	unsigned oacc_routine:1;
2180
2181	/* Set to 1 if there are any calls to procedures with implicit interface. */
2182	unsigned implicit_interface_calls:1;
2183
2184	/* OpenMP requires. */
2185	unsigned omp_requires:6;
2186	unsigned omp_target_seen:1;
2187	}
2188	gfc_namespace;
2189
2190	extern gfc_namespace *gfc_current_ns;
2191	extern gfc_namespace *gfc_global_ns_list;
2192
2193	/* Global symbols are symbols of global scope. Currently we only use
2194	this to detect collisions already when parsing.
2195	TODO: Extend to verify procedure calls. */
2196
2197	enum gfc_symbol_type
2198	{
2199	GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
2200	GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA
2201	};
2202
2203	typedef struct gfc_gsymbol
2204	{
2205	BBT_HEADER(gfc_gsymbol);
2206
2207	const char *name;
2208	const char *sym_name;
2209	const char *mod_name;
2210	const char *binding_label;
2211	enum gfc_symbol_type type;
2212
2213	int defined, used;
2214	bool bind_c;
2215	locus where;
2216	gfc_namespace *ns;
2217	}
2218	gfc_gsymbol;
2219
2220	extern gfc_gsymbol *gfc_gsym_root;
2221
2222	/* Information on interfaces being built. */
2223	typedef struct
2224	{
2225	interface_type type;
2226	gfc_symbol *sym;
2227	gfc_namespace *ns;
2228	gfc_user_op *uop;
2229	gfc_intrinsic_op op;
2230	}
2231	gfc_interface_info;
2232
2233	extern gfc_interface_info current_interface;
2234
2235
2236	/* Array reference. */
2237
2238	enum gfc_array_ref_dimen_type
2239	{
2240	DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_STAR, DIMEN_THIS_IMAGE, DIMEN_UNKNOWN
2241	};
2242
2243	typedef struct gfc_array_ref
2244	{
2245	ar_type type;
2246	int dimen; /* # of components in the reference */
2247	int codimen;
2248	bool in_allocate; /* For coarray checks. */
2249	gfc_expr *team;
2250	gfc_expr *stat;
2251	locus where;
2252	gfc_array_spec *as;
2253
2254	locus c_where[GFC_MAX_DIMENSIONS]; /* All expressions can be NULL */
2255	struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
2256	*stride[GFC_MAX_DIMENSIONS];
2257
2258	enum gfc_array_ref_dimen_type dimen_type[GFC_MAX_DIMENSIONS];
2259	}
2260	gfc_array_ref;
2261
2262	#define gfc_get_array_ref() XCNEW (gfc_array_ref)
2263
2264
2265	/* Component reference nodes. A variable is stored as an expression
2266	node that points to the base symbol. After that, a singly linked
2267	list of component reference nodes gives the variable's complete
2268	resolution. The array_ref component may be present and comes
2269	before the component component. */
2270
2271	enum ref_type
2272	{ REF_ARRAY, REF_COMPONENT, REF_SUBSTRING, REF_INQUIRY };
2273
2274	enum inquiry_type
2275	{ INQUIRY_RE, INQUIRY_IM, INQUIRY_KIND, INQUIRY_LEN };
2276
2277	typedef struct gfc_ref
2278	{
2279	ref_type type;
2280
2281	union
2282	{
2283	struct gfc_array_ref ar;
2284
2285	struct
2286	{
2287	gfc_component *component;
2288	gfc_symbol *sym;
2289	}
2290	c;
2291
2292	struct
2293	{
2294	struct gfc_expr *start, *end; /* Substring */
2295	gfc_charlen *length;
2296	}
2297	ss;
2298
2299	inquiry_type i;
2300
2301	}
2302	u;
2303
2304	struct gfc_ref *next;
2305	}
2306	gfc_ref;
2307
2308	#define gfc_get_ref() XCNEW (gfc_ref)
2309
2310
2311	/* Structures representing intrinsic symbols and their arguments lists. */
2312	typedef struct gfc_intrinsic_arg
2313	{
2314	char name[GFC_MAX_SYMBOL_LEN + 1];
2315
2316	gfc_typespec ts;
2317	unsigned optional:1, value:1;
2318	ENUM_BITFIELD (sym_intent) intent:2;
2319
2320	struct gfc_intrinsic_arg *next;
2321	}
2322	gfc_intrinsic_arg;
2323
2324
2325	typedef enum {
2326	GFC_UNDEFINED_DUMMY_ARG = 0,
2327	GFC_INTRINSIC_DUMMY_ARG,
2328	GFC_NON_INTRINSIC_DUMMY_ARG
2329	}
2330	gfc_dummy_arg_intrinsicness;
2331
2332	/* dummy arg of either an intrinsic or a user-defined procedure. */
2333	struct gfc_dummy_arg
2334	{
2335	gfc_dummy_arg_intrinsicness intrinsicness;
2336
2337	union {
2338	gfc_intrinsic_arg *intrinsic;
2339	gfc_formal_arglist *non_intrinsic;
2340	} u;
2341	};
2342
2343	#define gfc_get_dummy_arg() XCNEW (gfc_dummy_arg)
2344
2345
2346	const char * gfc_dummy_arg_get_name (gfc_dummy_arg &);
2347	const gfc_typespec & gfc_dummy_arg_get_typespec (gfc_dummy_arg &);
2348	bool gfc_dummy_arg_is_optional (gfc_dummy_arg &);
2349
2350
2351	/* Specifies the various kinds of check functions used to verify the
2352	argument lists of intrinsic functions. fX with X an integer refer
2353	to check functions of intrinsics with X arguments. f1m is used for
2354	the MAX and MIN intrinsics which can have an arbitrary number of
2355	arguments, f4ml is used for the MINLOC and MAXLOC intrinsics as
2356	these have special semantics. */
2357
2358	typedef union
2359	{
2360	bool (*f0)(void);
2361	bool (*f1)(struct gfc_expr *);
2362	bool (*f1m)(gfc_actual_arglist *);
2363	bool (*f2)(struct gfc_expr *, struct gfc_expr *);
2364	bool (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
2365	bool (*f5ml)(gfc_actual_arglist *);
2366	bool (*f6fl)(gfc_actual_arglist *);
2367	bool (*f3red)(gfc_actual_arglist *);
2368	bool (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2369	struct gfc_expr *);
2370	bool (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2371	struct gfc_expr *, struct gfc_expr *);
2372	}
2373	gfc_check_f;
2374
2375	/* Like gfc_check_f, these specify the type of the simplification
2376	function associated with an intrinsic. The fX are just like in
2377	gfc_check_f. cc is used for type conversion functions. */
2378
2379	typedef union
2380	{
2381	struct gfc_expr *(*f0)(void);
2382	struct gfc_expr *(*f1)(struct gfc_expr *);
2383	struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
2384	struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
2385	struct gfc_expr *);
2386	struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
2387	struct gfc_expr *, struct gfc_expr *);
2388	struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
2389	struct gfc_expr *, struct gfc_expr *,
2390	struct gfc_expr *);
2391	struct gfc_expr *(*f6)(struct gfc_expr *, struct gfc_expr *,
2392	struct gfc_expr *, struct gfc_expr *,
2393	struct gfc_expr *, struct gfc_expr *);
2394	struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
2395	}
2396	gfc_simplify_f;
2397
2398	/* Again like gfc_check_f, these specify the type of the resolution
2399	function associated with an intrinsic. The fX are just like in
2400	gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort(). */
2401
2402	typedef union
2403	{
2404	void (*f0)(struct gfc_expr *);
2405	void (*f1)(struct gfc_expr *, struct gfc_expr *);
2406	void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
2407	void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
2408	void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2409	struct gfc_expr *);
2410	void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2411	struct gfc_expr *, struct gfc_expr *);
2412	void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2413	struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
2414	void (*f6)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2415	struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
2416	struct gfc_expr *);
2417	void (*s1)(struct gfc_code *);
2418	}
2419	gfc_resolve_f;
2420
2421
2422	typedef struct gfc_intrinsic_sym
2423	{
2424	const char *name, *lib_name;
2425	gfc_intrinsic_arg *formal;
2426	gfc_typespec ts;
2427	unsigned elemental:1, inquiry:1, transformational:1, pure:1,
2428	generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1,
2429	from_module:1, vararg:1;
2430
2431	int standard;
2432
2433	gfc_simplify_f simplify;
2434	gfc_check_f check;
2435	gfc_resolve_f resolve;
2436	struct gfc_intrinsic_sym *specific_head, *next;
2437	gfc_isym_id id;
2438
2439	}
2440	gfc_intrinsic_sym;
2441
2442
2443	/* Expression nodes. The expression node types deserve explanations,
2444	since the last couple can be easily misconstrued:
2445
2446	EXPR_OP Operator node pointing to one or two other nodes
2447	EXPR_FUNCTION Function call, symbol points to function's name
2448	EXPR_CONSTANT A scalar constant: Logical, String, Real, Int or Complex
2449	EXPR_VARIABLE An Lvalue with a root symbol and possible reference list
2450	which expresses structure, array and substring refs.
2451	EXPR_NULL The NULL pointer value (which also has a basic type).
2452	EXPR_SUBSTRING A substring of a constant string
2453	EXPR_STRUCTURE A structure constructor
2454	EXPR_ARRAY An array constructor.
2455	EXPR_COMPCALL Function (or subroutine) call of a procedure pointer
2456	component or type-bound procedure. */
2457
2458	#include <mpfr.h>
2459	#include <mpc.h>
2460	#define GFC_RND_MODE MPFR_RNDN
2461	#define GFC_MPC_RND_MODE MPC_RNDNN
2462
2463	typedef splay_tree gfc_constructor_base;
2464
2465
2466	/* This should be an unsigned variable of type size_t. But to handle
2467	compiling to a 64-bit target from a 32-bit host, we need to use a
2468	HOST_WIDE_INT. Also, occasionally the string length field is used
2469	as a flag with values -1 and -2, see e.g. gfc_add_assign_aux_vars.
2470	So it needs to be signed. */
2471	typedef HOST_WIDE_INT gfc_charlen_t;
2472
2473	typedef struct gfc_expr
2474	{
2475	expr_t expr_type;
2476
2477	gfc_typespec ts; /* These two refer to the overall expression */
2478
2479	int rank; /* 0 indicates a scalar, -1 an assumed-rank array. */
2480	mpz_t *shape; /* Can be NULL if shape is unknown at compile time */
2481
2482	/* Nonnull for functions and structure constructors, may also used to hold the
2483	base-object for component calls. */
2484	gfc_symtree *symtree;
2485
2486	gfc_ref *ref;
2487
2488	locus where;
2489
2490	/* Used to store the base expression in component calls, when the expression
2491	is not a variable. */
2492	struct gfc_expr *base_expr;
2493
2494	/* is_snan denotes a signalling not-a-number. */
2495	unsigned int is_snan : 1;
2496
2497	/* Sometimes, when an error has been emitted, it is necessary to prevent
2498	it from recurring. */
2499	unsigned int error : 1;
2500
2501	/* Mark an expression where a user operator has been substituted by
2502	a function call in interface.cc(gfc_extend_expr). */
2503	unsigned int user_operator : 1;
2504
2505	/* Mark an expression as being a MOLD argument of ALLOCATE. */
2506	unsigned int mold : 1;
2507
2508	/* Will require finalization after use. */
2509	unsigned int must_finalize : 1;
2510
2511	/* Set this if no range check should be performed on this expression. */
2512
2513	unsigned int no_bounds_check : 1;
2514
2515	/* Set this if a matmul expression has already been evaluated for conversion
2516	to a BLAS call. */
2517
2518	unsigned int external_blas : 1;
2519
2520	/* Set this if resolution has already happened. It could be harmful
2521	if done again. */
2522
2523	unsigned int do_not_resolve_again : 1;
2524
2525	/* Set this if no warning should be given somewhere in a lower level. */
2526
2527	unsigned int do_not_warn : 1;
2528
2529	/* Set this if the expression came from expanding an array constructor. */
2530	unsigned int from_constructor : 1;
2531
2532	/* If an expression comes from a Hollerith constant or compile-time
2533	evaluation of a transfer statement, it may have a prescribed target-
2534	memory representation, and these cannot always be backformed from
2535	the value. */
2536	struct
2537	{
2538	gfc_charlen_t length;
2539	char *string;
2540	}
2541	representation;
2542
2543	struct
2544	{
2545	int len; /* Length of BOZ string without terminating NULL. */
2546	int rdx; /* Radix of BOZ. */
2547	char *str; /* BOZ string with NULL terminating character. */
2548	}
2549	boz;
2550
2551	union
2552	{
2553	int logical;
2554
2555	io_kind iokind;
2556
2557	mpz_t integer;
2558
2559	mpfr_t real;
2560
2561	mpc_t complex;
2562
2563	struct
2564	{
2565	gfc_intrinsic_op op;
2566	gfc_user_op *uop;
2567	struct gfc_expr *op1, *op2;
2568	}
2569	op;
2570
2571	struct
2572	{
2573	gfc_actual_arglist *actual;
2574	const char *name; /* Points to the ultimate name of the function */
2575	gfc_intrinsic_sym *isym;
2576	gfc_symbol *esym;
2577	}
2578	function;
2579
2580	struct
2581	{
2582	gfc_actual_arglist* actual;
2583	const char* name;
2584	/* Base-object, whose component was called. NULL means that it should
2585	be taken from symtree/ref. */
2586	struct gfc_expr* base_object;
2587	gfc_typebound_proc* tbp; /* Should overlap with esym. */
2588
2589	/* For type-bound operators, we want to call PASS procedures but already
2590	have the full arglist; mark this, so that it is not extended by the
2591	PASS argument. */
2592	unsigned ignore_pass:1;
2593
2594	/* Do assign-calls rather than calls, that is appropriate dependency
2595	checking. */
2596	unsigned assign:1;
2597	}
2598	compcall;
2599
2600	struct
2601	{
2602	gfc_charlen_t length;
2603	gfc_char_t *string;
2604	}
2605	character;
2606
2607	gfc_constructor_base constructor;
2608	}
2609	value;
2610
2611	/* Used to store PDT expression lists associated with expressions. */
2612	gfc_actual_arglist *param_list;
2613
2614	}
2615	gfc_expr;
2616
2617
2618	#define gfc_get_shape(rank) (XCNEWVEC (mpz_t, (rank)))
2619
2620	/* Structures for information associated with different kinds of
2621	numbers. The first set of integer parameters define all there is
2622	to know about a particular kind. The rest of the elements are
2623	computed from the first elements. */
2624
2625	typedef struct
2626	{
2627	/* Values really representable by the target. */
2628	mpz_t huge, pedantic_min_int, min_int;
2629
2630	int kind, radix, digits, bit_size, range;
2631
2632	/* True if the C type of the given name maps to this precision.
2633	Note that more than one bit can be set. */
2634	unsigned int c_char : 1;
2635	unsigned int c_short : 1;
2636	unsigned int c_int : 1;
2637	unsigned int c_long : 1;
2638	unsigned int c_long_long : 1;
2639	}
2640	gfc_integer_info;
2641
2642	extern gfc_integer_info gfc_integer_kinds[];
2643
2644
2645	typedef struct
2646	{
2647	int kind, bit_size;
2648
2649	/* True if the C++ type bool, C99 type _Bool, maps to this precision. */
2650	unsigned int c_bool : 1;
2651	}
2652	gfc_logical_info;
2653
2654	extern gfc_logical_info gfc_logical_kinds[];
2655
2656
2657	typedef struct
2658	{
2659	mpfr_t epsilon, huge, tiny, subnormal;
2660	int kind, abi_kind, radix, digits, min_exponent, max_exponent;
2661	int range, precision;
2662
2663	/* The precision of the type as reported by GET_MODE_PRECISION. */
2664	int mode_precision;
2665
2666	/* True if the C type of the given name maps to this precision.
2667	Note that more than one bit can be set. */
2668	unsigned int c_float : 1;
2669	unsigned int c_double : 1;
2670	unsigned int c_long_double : 1;
2671	unsigned int c_float128 : 1;
2672	/* True if for _Float128 C2X IEC 60559 *f128 APIs should be used
2673	instead of libquadmath *q APIs. */
2674	unsigned int use_iec_60559 : 1;
2675	}
2676	gfc_real_info;
2677
2678	extern gfc_real_info gfc_real_kinds[];
2679
2680	typedef struct
2681	{
2682	int kind, bit_size;
2683	const char *name;
2684	}
2685	gfc_character_info;
2686
2687	extern gfc_character_info gfc_character_kinds[];
2688
2689
2690	/* Equivalence structures. Equivalent lvalues are linked along the
2691	*eq pointer, equivalence sets are strung along the *next node. */
2692	typedef struct gfc_equiv
2693	{
2694	struct gfc_equiv *next, *eq;
2695	gfc_expr *expr;
2696	const char *module;
2697	int used;
2698	}
2699	gfc_equiv;
2700
2701	#define gfc_get_equiv() XCNEW (gfc_equiv)
2702
2703	/* Holds a single equivalence member after processing. */
2704	typedef struct gfc_equiv_info
2705	{
2706	gfc_symbol *sym;
2707	HOST_WIDE_INT offset;
2708	HOST_WIDE_INT length;
2709	struct gfc_equiv_info *next;
2710	} gfc_equiv_info;
2711
2712	/* Holds equivalence groups, after they have been processed. */
2713	typedef struct gfc_equiv_list
2714	{
2715	gfc_equiv_info *equiv;
2716	struct gfc_equiv_list *next;
2717	} gfc_equiv_list;
2718
2719	/* gfc_case stores the selector list of a case statement. The *low
2720	and *high pointers can point to the same expression in the case of
2721	a single value. If *high is NULL, the selection is from *low
2722	upwards, if *low is NULL the selection is *high downwards.
2723
2724	This structure has separate fields to allow single and double linked
2725	lists of CASEs at the same time. The singe linked list along the NEXT
2726	field is a list of cases for a single CASE label. The double linked
2727	list along the LEFT/RIGHT fields is used to detect overlap and to
2728	build a table of the cases for SELECT constructs with a CHARACTER
2729	case expression. */
2730
2731	typedef struct gfc_case
2732	{
2733	/* Where we saw this case. */
2734	locus where;
2735	int n;
2736
2737	/* Case range values. If (low == high), it's a single value. If one of
2738	the labels is NULL, it's an unbounded case. If both are NULL, this
2739	represents the default case. */
2740	gfc_expr *low, *high;
2741
2742	/* Only used for SELECT TYPE. */
2743	gfc_typespec ts;
2744
2745	/* Next case label in the list of cases for a single CASE label. */
2746	struct gfc_case *next;
2747
2748	/* Used for detecting overlap, and for code generation. */
2749	struct gfc_case *left, *right;
2750
2751	/* True if this case label can never be matched. */
2752	int unreachable;
2753	}
2754	gfc_case;
2755
2756	#define gfc_get_case() XCNEW (gfc_case)
2757
2758
2759	typedef struct
2760	{
2761	gfc_expr *var, *start, *end, *step;
2762	unsigned short unroll;
2763	bool ivdep;
2764	bool vector;
2765	bool novector;
2766	}
2767	gfc_iterator;
2768
2769	#define gfc_get_iterator() XCNEW (gfc_iterator)
2770
2771
2772	/* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements. */
2773
2774	typedef struct gfc_alloc
2775	{
2776	gfc_expr *expr;
2777	struct gfc_alloc *next;
2778	}
2779	gfc_alloc;
2780
2781	#define gfc_get_alloc() XCNEW (gfc_alloc)
2782
2783
2784	typedef struct
2785	{
2786	gfc_expr *unit, *file, *status, *access, *form, *recl,
2787	*blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert,
2788	*decimal, *encoding, *round, *sign, *asynchronous, *id, *newunit,
2789	*share, *cc;
2790	char readonly;
2791	gfc_st_label *err;
2792	}
2793	gfc_open;
2794
2795
2796	typedef struct
2797	{
2798	gfc_expr *unit, *status, *iostat, *iomsg;
2799	gfc_st_label *err;
2800	}
2801	gfc_close;
2802
2803
2804	typedef struct
2805	{
2806	gfc_expr *unit, *iostat, *iomsg;
2807	gfc_st_label *err;
2808	}
2809	gfc_filepos;
2810
2811
2812	typedef struct
2813	{
2814	gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
2815	*name, *access, *sequential, *direct, *form, *formatted,
2816	*unformatted, *recl, *nextrec, *blank, *position, *action, *read,
2817	*write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos,
2818	*asynchronous, *decimal, *encoding, *pending, *round, *sign, *size, *id,
2819	*iqstream, *share, *cc;
2820
2821	gfc_st_label *err;
2822
2823	}
2824	gfc_inquire;
2825
2826
2827	typedef struct
2828	{
2829	gfc_expr *unit, *iostat, *iomsg, *id;
2830	gfc_st_label *err, *end, *eor;
2831	}
2832	gfc_wait;
2833
2834
2835	typedef struct
2836	{
2837	gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg,
2838	*id, *pos, *asynchronous, *blank, *decimal, *delim, *pad, *round,
2839	*sign, *extra_comma, *dt_io_kind, *udtio;
2840	char dec_ext;
2841
2842	gfc_symbol *namelist;
2843	/* A format_label of `format_asterisk' indicates the "*" format */
2844	gfc_st_label *format_label;
2845	gfc_st_label *err, *end, *eor;
2846
2847	locus eor_where, end_where, err_where;
2848	}
2849	gfc_dt;
2850
2851
2852	typedef struct gfc_forall_iterator
2853	{
2854	gfc_expr *var, *start, *end, *stride;
2855	struct gfc_forall_iterator *next;
2856	}
2857	gfc_forall_iterator;
2858
2859
2860	/* Linked list to store associations in an ASSOCIATE statement. */
2861
2862	typedef struct gfc_association_list
2863	{
2864	struct gfc_association_list *next;
2865
2866	/* Whether this is association to a variable that can be changed; otherwise,
2867	it's association to an expression and the name may not be used as
2868	lvalue. */
2869	unsigned variable:1;
2870
2871	/* True if this struct is currently only linked to from a gfc_symbol rather
2872	than as part of a real list in gfc_code->ext.block.assoc. This may
2873	happen for SELECT TYPE temporaries and must be considered
2874	for memory handling. */
2875	unsigned dangling:1;
2876
2877	/* True when the rank of the target expression is guessed during parsing. */
2878	unsigned rankguessed:1;
2879
2880	char name[GFC_MAX_SYMBOL_LEN + 1];
2881	gfc_symtree *st; /* Symtree corresponding to name. */
2882	locus where;
2883
2884	gfc_expr *target;
2885	}
2886	gfc_association_list;
2887	#define gfc_get_association_list() XCNEW (gfc_association_list)
2888
2889
2890	/* Executable statements that fill gfc_code structures. */
2891	enum gfc_exec_op
2892	{
2893	EXEC_NOP = 1, EXEC_END_NESTED_BLOCK, EXEC_END_BLOCK, EXEC_ASSIGN,
2894	EXEC_LABEL_ASSIGN, EXEC_POINTER_ASSIGN, EXEC_CRITICAL, EXEC_ERROR_STOP,
2895	EXEC_GOTO, EXEC_CALL, EXEC_COMPCALL, EXEC_ASSIGN_CALL, EXEC_RETURN,
2896	EXEC_ENTRY, EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
2897	EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_CONCURRENT, EXEC_DO_WHILE,
2898	EXEC_SELECT, EXEC_BLOCK, EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT,
2899	EXEC_CALL_PPC, EXEC_ALLOCATE, EXEC_DEALLOCATE, EXEC_END_PROCEDURE,
2900	EXEC_SELECT_TYPE, EXEC_SELECT_RANK, EXEC_SYNC_ALL, EXEC_SYNC_MEMORY,
2901	EXEC_SYNC_IMAGES, EXEC_OPEN, EXEC_CLOSE, EXEC_WAIT,
2902	EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
2903	EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
2904	EXEC_FORM_TEAM, EXEC_CHANGE_TEAM, EXEC_END_TEAM, EXEC_SYNC_TEAM,
2905	EXEC_LOCK, EXEC_UNLOCK, EXEC_EVENT_POST, EXEC_EVENT_WAIT, EXEC_FAIL_IMAGE,
2906	EXEC_OACC_KERNELS_LOOP, EXEC_OACC_PARALLEL_LOOP, EXEC_OACC_SERIAL_LOOP,
2907	EXEC_OACC_ROUTINE, EXEC_OACC_PARALLEL, EXEC_OACC_KERNELS, EXEC_OACC_SERIAL,
2908	EXEC_OACC_DATA, EXEC_OACC_HOST_DATA, EXEC_OACC_LOOP, EXEC_OACC_UPDATE,
2909	EXEC_OACC_WAIT, EXEC_OACC_CACHE, EXEC_OACC_ENTER_DATA, EXEC_OACC_EXIT_DATA,
2910	EXEC_OACC_ATOMIC, EXEC_OACC_DECLARE,
2911	EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
2912	EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
2913	EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
2914	EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
2915	EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
2916	EXEC_OMP_END_SINGLE, EXEC_OMP_TASK, EXEC_OMP_TASKWAIT,
2917	EXEC_OMP_TASKYIELD, EXEC_OMP_CANCEL, EXEC_OMP_CANCELLATION_POINT,
2918	EXEC_OMP_TASKGROUP, EXEC_OMP_SIMD, EXEC_OMP_DO_SIMD,
2919	EXEC_OMP_PARALLEL_DO_SIMD, EXEC_OMP_TARGET, EXEC_OMP_TARGET_DATA,
2920	EXEC_OMP_TEAMS, EXEC_OMP_DISTRIBUTE, EXEC_OMP_DISTRIBUTE_SIMD,
2921	EXEC_OMP_DISTRIBUTE_PARALLEL_DO, EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD,
2922	EXEC_OMP_TARGET_TEAMS, EXEC_OMP_TEAMS_DISTRIBUTE,
2923	EXEC_OMP_TEAMS_DISTRIBUTE_SIMD, EXEC_OMP_TARGET_TEAMS_DISTRIBUTE,
2924	EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD,
2925	EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO,
2926	EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO,
2927	EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
2928	EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD,
2929	EXEC_OMP_TARGET_UPDATE, EXEC_OMP_END_CRITICAL,
2930	EXEC_OMP_TARGET_ENTER_DATA, EXEC_OMP_TARGET_EXIT_DATA,
2931	EXEC_OMP_TARGET_PARALLEL, EXEC_OMP_TARGET_PARALLEL_DO,
2932	EXEC_OMP_TARGET_PARALLEL_DO_SIMD, EXEC_OMP_TARGET_SIMD,
2933	EXEC_OMP_TASKLOOP, EXEC_OMP_TASKLOOP_SIMD, EXEC_OMP_SCAN, EXEC_OMP_DEPOBJ,
2934	EXEC_OMP_PARALLEL_MASTER, EXEC_OMP_PARALLEL_MASTER_TASKLOOP,
2935	EXEC_OMP_PARALLEL_MASTER_TASKLOOP_SIMD, EXEC_OMP_MASTER_TASKLOOP,
2936	EXEC_OMP_MASTER_TASKLOOP_SIMD, EXEC_OMP_LOOP, EXEC_OMP_PARALLEL_LOOP,
2937	EXEC_OMP_TEAMS_LOOP, EXEC_OMP_TARGET_PARALLEL_LOOP,
2938	EXEC_OMP_TARGET_TEAMS_LOOP, EXEC_OMP_MASKED, EXEC_OMP_PARALLEL_MASKED,
2939	EXEC_OMP_PARALLEL_MASKED_TASKLOOP, EXEC_OMP_PARALLEL_MASKED_TASKLOOP_SIMD,
2940	EXEC_OMP_MASKED_TASKLOOP, EXEC_OMP_MASKED_TASKLOOP_SIMD, EXEC_OMP_SCOPE,
2941	EXEC_OMP_ERROR
2942	};
2943
2944	typedef struct gfc_code
2945	{
2946	gfc_exec_op op;
2947
2948	struct gfc_code *block, *next;
2949	locus loc;
2950
2951	gfc_st_label *here, *label1, *label2, *label3;
2952	gfc_symtree *symtree;
2953	gfc_expr *expr1, *expr2, *expr3, *expr4;
2954	/* A name isn't sufficient to identify a subroutine, we need the actual
2955	symbol for the interface definition.
2956	const char *sub_name; */
2957	gfc_symbol *resolved_sym;
2958	gfc_intrinsic_sym *resolved_isym;
2959
2960	union
2961	{
2962	gfc_actual_arglist *actual;
2963	gfc_iterator *iterator;
2964
2965	struct
2966	{
2967	gfc_typespec ts;
2968	gfc_alloc *list;
2969	/* Take the array specification from expr3 to allocate arrays
2970	without an explicit array specification. */
2971	unsigned arr_spec_from_expr3:1;
2972	}
2973	alloc;
2974
2975	struct
2976	{
2977	gfc_namespace *ns;
2978	gfc_association_list *assoc;
2979	gfc_case *case_list;
2980	}
2981	block;
2982
2983	gfc_open *open;
2984	gfc_close *close;
2985	gfc_filepos *filepos;
2986	gfc_inquire *inquire;
2987	gfc_wait *wait;
2988	gfc_dt *dt;
2989	gfc_forall_iterator *forall_iterator;
2990	struct gfc_code *which_construct;
2991	int stop_code;
2992	gfc_entry_list *entry;
2993	gfc_oacc_declare *oacc_declare;
2994	gfc_omp_clauses *omp_clauses;
2995	const char *omp_name;
2996	gfc_omp_namelist *omp_namelist;
2997	bool omp_bool;
2998	}
2999	ext; /* Points to additional structures required by statement */
3000
3001	/* Cycle and break labels in constructs. */
3002	tree cycle_label;
3003	tree exit_label;
3004	}
3005	gfc_code;
3006
3007
3008	/* Storage for DATA statements. */
3009	typedef struct gfc_data_variable
3010	{
3011	gfc_expr *expr;
3012	gfc_iterator iter;
3013	struct gfc_data_variable *list, *next;
3014	}
3015	gfc_data_variable;
3016
3017
3018	typedef struct gfc_data_value
3019	{
3020	mpz_t repeat;
3021	gfc_expr *expr;
3022	struct gfc_data_value *next;
3023	}
3024	gfc_data_value;
3025
3026
3027	typedef struct gfc_data
3028	{
3029	gfc_data_variable *var;
3030	gfc_data_value *value;
3031	locus where;
3032
3033	struct gfc_data *next;
3034	}
3035	gfc_data;
3036
3037
3038	/* Structure for holding compile options */
3039	typedef struct
3040	{
3041	char *module_dir;
3042	gfc_source_form source_form;
3043	int max_continue_fixed;
3044	int max_continue_free;
3045	int max_identifier_length;
3046
3047	int max_errors;
3048
3049	int flag_preprocessed;
3050	int flag_d_lines;
3051	int flag_init_integer;
3052	long flag_init_integer_value;
3053	int flag_init_logical;
3054	int flag_init_character;
3055	char flag_init_character_value;
3056
3057	int fpe;
3058	int fpe_summary;
3059	int rtcheck;
3060
3061	int warn_std;
3062	int allow_std;
3063	}
3064	gfc_option_t;
3065
3066	extern gfc_option_t gfc_option;
3067
3068	/* Constructor nodes for array and structure constructors. */
3069	typedef struct gfc_constructor
3070	{
3071	gfc_constructor_base base;
3072	mpz_t offset; /* Offset within a constructor, used as
3073	key within base. */
3074
3075	gfc_expr *expr;
3076	gfc_iterator *iterator;
3077	locus where;
3078
3079	union
3080	{
3081	gfc_component *component; /* Record the component being initialized. */
3082	}
3083	n;
3084	mpz_t repeat; /* Record the repeat number of initial values in data
3085	statement like "data a/5*10/". */
3086	}
3087	gfc_constructor;
3088
3089
3090	typedef struct iterator_stack
3091	{
3092	gfc_symtree *variable;
3093	mpz_t value;
3094	struct iterator_stack *prev;
3095	}
3096	iterator_stack;
3097	extern iterator_stack *iter_stack;
3098
3099
3100	/* Used for (possibly nested) SELECT TYPE statements. */
3101	typedef struct gfc_select_type_stack
3102	{
3103	gfc_symbol *selector; /* Current selector variable. */
3104	gfc_symtree *tmp; /* Current temporary variable. */
3105	struct gfc_select_type_stack *prev; /* Previous element on stack. */
3106	}
3107	gfc_select_type_stack;
3108	extern gfc_select_type_stack *select_type_stack;
3109	#define gfc_get_select_type_stack() XCNEW (gfc_select_type_stack)
3110
3111
3112	/* Node in the linked list used for storing finalizer procedures. */
3113
3114	typedef struct gfc_finalizer
3115	{
3116	struct gfc_finalizer* next;
3117	locus where; /* Where the FINAL declaration occurred. */
3118
3119	/* Up to resolution, we want the gfc_symbol, there we lookup the corresponding
3120	symtree and later need only that. This way, we can access and call the
3121	finalizers from every context as they should be "always accessible". I
3122	don't make this a union because we need the information whether proc_sym is
3123	still referenced or not for dereferencing it on deleting a gfc_finalizer
3124	structure. */
3125	gfc_symbol* proc_sym;
3126	gfc_symtree* proc_tree;
3127	}
3128	gfc_finalizer;
3129	#define gfc_get_finalizer() XCNEW (gfc_finalizer)
3130
3131
3132	/************************ Function prototypes *************************/
3133
3134	/* decl.cc */
3135	bool gfc_in_match_data (void);
3136	match gfc_match_char_spec (gfc_typespec *);
3137	extern int directive_unroll;
3138	extern bool directive_ivdep;
3139	extern bool directive_vector;
3140	extern bool directive_novector;
3141
3142	/* SIMD clause enum. */
3143	enum gfc_simd_clause
3144	{
3145	SIMD_NONE = (1 << 0),
3146	SIMD_INBRANCH = (1 << 1),
3147	SIMD_NOTINBRANCH = (1 << 2)
3148	};
3149
3150	/* Tuple for parsing of vectorized built-ins. */
3151	struct gfc_vect_builtin_tuple
3152	{
3153	gfc_vect_builtin_tuple (const char *n, gfc_simd_clause t)
3154	: name (n), simd_type (t) {}
3155
3156	const char *name;
3157	gfc_simd_clause simd_type;
3158	};
3159
3160	/* Map of middle-end built-ins that should be vectorized. */
3161	extern hash_map<nofree_string_hash, int> *gfc_vectorized_builtins;
3162
3163	/* Handling Parameterized Derived Types */
3164	bool gfc_insert_parameter_exprs (gfc_expr *, gfc_actual_arglist *);
3165	match gfc_get_pdt_instance (gfc_actual_arglist *, gfc_symbol **,
3166	gfc_actual_arglist **);
3167
3168
3169	/* Given a symbol, test whether it is a module procedure in a submodule */
3170	#define gfc_submodule_procedure(attr) \
3171	(gfc_state_stack->previous && gfc_state_stack->previous->previous \
3172	&& gfc_state_stack->previous->previous->state == COMP_SUBMODULE \
3173	&& attr->module_procedure)
3174
3175	/* scanner.cc */
3176	void gfc_scanner_done_1 (void);
3177	void gfc_scanner_init_1 (void);
3178
3179	void gfc_add_include_path (const char *, bool, bool, bool, bool);
3180	void gfc_add_intrinsic_modules_path (const char *);
3181	void gfc_release_include_path (void);
3182	void gfc_check_include_dirs (bool);
3183	FILE *gfc_open_included_file (const char *, bool, bool);
3184
3185	int gfc_at_end (void);
3186	int gfc_at_eof (void);
3187	int gfc_at_bol (void);
3188	int gfc_at_eol (void);
3189	void gfc_advance_line (void);
3190	int gfc_check_include (void);
3191	int gfc_define_undef_line (void);
3192
3193	int gfc_wide_is_printable (gfc_char_t);
3194	int gfc_wide_is_digit (gfc_char_t);
3195	int gfc_wide_fits_in_byte (gfc_char_t);
3196	gfc_char_t gfc_wide_tolower (gfc_char_t);
3197	gfc_char_t gfc_wide_toupper (gfc_char_t);
3198	size_t gfc_wide_strlen (const gfc_char_t *);
3199	int gfc_wide_strncasecmp (const gfc_char_t *, const char *, size_t);
3200	gfc_char_t *gfc_wide_memset (gfc_char_t *, gfc_char_t, size_t);
3201	char *gfc_widechar_to_char (const gfc_char_t *, int);
3202	gfc_char_t *gfc_char_to_widechar (const char *);
3203
3204	#define gfc_get_wide_string(n) XCNEWVEC (gfc_char_t, n)
3205
3206	void gfc_skip_comments (void);
3207	gfc_char_t gfc_next_char_literal (gfc_instring);
3208	gfc_char_t gfc_next_char (void);
3209	char gfc_next_ascii_char (void);
3210	gfc_char_t gfc_peek_char (void);
3211	char gfc_peek_ascii_char (void);
3212	void gfc_error_recovery (void);
3213	void gfc_gobble_whitespace (void);
3214	void gfc_new_file (void);
3215	const char * gfc_read_orig_filename (const char *, const char **);
3216
3217	extern gfc_source_form gfc_current_form;
3218	extern const char *gfc_source_file;
3219	extern locus gfc_current_locus;
3220
3221	void gfc_start_source_files (void);
3222	void gfc_end_source_files (void);
3223
3224	/* misc.cc */
3225	void gfc_clear_ts (gfc_typespec *);
3226	FILE *gfc_open_file (const char *);
3227	const char *gfc_basic_typename (bt);
3228	const char *gfc_dummy_typename (gfc_typespec *);
3229	const char *gfc_typename (gfc_typespec *, bool for_hash = false);
3230	const char *gfc_typename (gfc_expr *);
3231	const char *gfc_op2string (gfc_intrinsic_op);
3232	const char *gfc_code2string (const mstring *, int);
3233	int gfc_string2code (const mstring *, const char *);
3234	const char *gfc_intent_string (sym_intent);
3235
3236	void gfc_init_1 (void);
3237	void gfc_init_2 (void);
3238	void gfc_done_1 (void);
3239	void gfc_done_2 (void);
3240
3241	int get_c_kind (const char *, CInteropKind_t *);
3242
3243	const char *gfc_closest_fuzzy_match (const char *, char **);
3244	static inline void
3245	vec_push (char **&optr, size_t &osz, const char *elt)
3246	{
3247	/* {auto,}vec.safe_push () replacement. Don't ask.. */
3248	// if (strlen (elt) < 4) return; premature optimization: eliminated by cutoff
3249	optr = XRESIZEVEC (char *, optr, osz + 2);
3250	optr[osz] = CONST_CAST (char *, elt);
3251	optr[++osz] = NULL;
3252	}
3253
3254	HOST_WIDE_INT gfc_mpz_get_hwi (mpz_t);
3255	void gfc_mpz_set_hwi (mpz_t, const HOST_WIDE_INT);
3256
3257	/* options.cc */
3258	unsigned int gfc_option_lang_mask (void);
3259	void gfc_init_options_struct (struct gcc_options *);
3260	void gfc_init_options (unsigned int,
3261	struct cl_decoded_option *);
3262	bool gfc_handle_option (size_t, const char *, HOST_WIDE_INT, int, location_t,
3263	const struct cl_option_handlers *);
3264	bool gfc_post_options (const char **);
3265	char *gfc_get_option_string (void);
3266
3267	/* f95-lang.cc */
3268	void gfc_maybe_initialize_eh (void);
3269
3270	/* iresolve.cc */
3271	const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
3272	bool gfc_find_sym_in_expr (gfc_symbol *, gfc_expr *);
3273
3274	/* error.cc */
3275	void gfc_error_init_1 (void);
3276	void gfc_diagnostics_init (void);
3277	void gfc_diagnostics_finish (void);
3278	void gfc_buffer_error (bool);
3279
3280	const char *gfc_print_wide_char (gfc_char_t);
3281
3282	bool gfc_warning (int opt, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
3283	bool gfc_warning_now (int opt, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
3284	bool gfc_warning_internal (int opt, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
3285	bool gfc_warning_now_at (location_t loc, int opt, const char *gmsgid, ...)
3286	ATTRIBUTE_GCC_GFC(3,4);
3287
3288	void gfc_clear_warning (void);
3289	void gfc_warning_check (void);
3290
3291	void gfc_error_opt (int opt, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
3292	void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
3293	void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
3294	void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
3295	void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
3296	void gfc_clear_error (void);
3297	bool gfc_error_check (void);
3298	bool gfc_error_flag_test (void);
3299
3300	notification gfc_notification_std (int);
3301	bool gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
3302
3303	/* A general purpose syntax error. */
3304	#define gfc_syntax_error(ST) \
3305	gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
3306
3307	#include "pretty-print.h" /* For output_buffer. */
3308	struct gfc_error_buffer
3309	{
3310	bool flag;
3311	output_buffer buffer;
3312	gfc_error_buffer(void) : flag(false), buffer() {}
3313	};
3314
3315	void gfc_push_error (gfc_error_buffer *);
3316	void gfc_pop_error (gfc_error_buffer *);
3317	void gfc_free_error (gfc_error_buffer *);
3318
3319	void gfc_get_errors (int *, int *);
3320	void gfc_errors_to_warnings (bool);
3321
3322	/* arith.cc */
3323	void gfc_arith_init_1 (void);
3324	void gfc_arith_done_1 (void);
3325	arith gfc_check_integer_range (mpz_t p, int kind);
3326	bool gfc_check_character_range (gfc_char_t, int);
3327
3328	extern bool gfc_seen_div0;
3329
3330	/* trans-types.cc */
3331	int gfc_validate_kind (bt, int, bool);
3332	int gfc_get_int_kind_from_width_isofortranenv (int size);
3333	int gfc_get_real_kind_from_width_isofortranenv (int size);
3334	tree gfc_get_union_type (gfc_symbol *);
3335	tree gfc_get_derived_type (gfc_symbol * derived, int codimen = 0);
3336	extern int gfc_index_integer_kind;
3337	extern int gfc_default_integer_kind;
3338	extern int gfc_max_integer_kind;
3339	extern int gfc_default_real_kind;
3340	extern int gfc_default_double_kind;
3341	extern int gfc_default_character_kind;
3342	extern int gfc_default_logical_kind;
3343	extern int gfc_default_complex_kind;
3344	extern int gfc_c_int_kind;
3345	extern int gfc_c_intptr_kind;
3346	extern int gfc_atomic_int_kind;
3347	extern int gfc_atomic_logical_kind;
3348	extern int gfc_intio_kind;
3349	extern int gfc_charlen_int_kind;
3350	extern int gfc_size_kind;
3351	extern int gfc_numeric_storage_size;
3352	extern int gfc_character_storage_size;
3353
3354	#define gfc_logical_4_kind 4
3355	#define gfc_integer_4_kind 4
3356	#define gfc_real_4_kind 4
3357
3358	/* symbol.cc */
3359	void gfc_clear_new_implicit (void);
3360	bool gfc_add_new_implicit_range (int, int);
3361	bool gfc_merge_new_implicit (gfc_typespec *);
3362	void gfc_set_implicit_none (bool, bool, locus *);
3363	void gfc_check_function_type (gfc_namespace *);
3364	bool gfc_is_intrinsic_typename (const char *);
3365	bool gfc_check_conflict (symbol_attribute *, const char *, locus *);
3366
3367	gfc_typespec *gfc_get_default_type (const char *, gfc_namespace *);
3368	bool gfc_set_default_type (gfc_symbol *, int, gfc_namespace *);
3369
3370	void gfc_set_sym_referenced (gfc_symbol *);
3371
3372	bool gfc_add_attribute (symbol_attribute *, locus *);
3373	bool gfc_add_ext_attribute (symbol_attribute *, ext_attr_id_t, locus *);
3374	bool gfc_add_allocatable (symbol_attribute *, locus *);
3375	bool gfc_add_codimension (symbol_attribute *, const char *, locus *);
3376	bool gfc_add_contiguous (symbol_attribute *, const char *, locus *);
3377	bool gfc_add_dimension (symbol_attribute *, const char *, locus *);
3378	bool gfc_add_external (symbol_attribute *, locus *);
3379	bool gfc_add_intrinsic (symbol_attribute *, locus *);
3380	bool gfc_add_optional (symbol_attribute *, locus *);
3381	bool gfc_add_kind (symbol_attribute *, locus *);
3382	bool gfc_add_len (symbol_attribute *, locus *);
3383	bool gfc_add_pointer (symbol_attribute *, locus *);
3384	bool gfc_add_cray_pointer (symbol_attribute *, locus *);
3385	bool gfc_add_cray_pointee (symbol_attribute *, locus *);
3386	match gfc_mod_pointee_as (gfc_array_spec *);
3387	bool gfc_add_protected (symbol_attribute *, const char *, locus *);
3388	bool gfc_add_result (symbol_attribute *, const char *, locus *);
3389	bool gfc_add_automatic (symbol_attribute *, const char *, locus *);
3390	bool gfc_add_save (symbol_attribute *, save_state, const char *, locus *);
3391	bool gfc_add_threadprivate (symbol_attribute *, const char *, locus *);
3392	bool gfc_add_omp_declare_target (symbol_attribute *, const char *, locus *);
3393	bool gfc_add_omp_declare_target_link (symbol_attribute *, const char *,
3394	locus *);
3395	bool gfc_add_target (symbol_attribute *, locus *);
3396	bool gfc_add_dummy (symbol_attribute *, const char *, locus *);
3397	bool gfc_add_generic (symbol_attribute *, const char *, locus *);
3398	bool gfc_add_in_common (symbol_attribute *, const char *, locus *);
3399	bool gfc_add_in_equivalence (symbol_attribute *, const char *, locus *);
3400	bool gfc_add_data (symbol_attribute *, const char *, locus *);
3401	bool gfc_add_in_namelist (symbol_attribute *, const char *, locus *);
3402	bool gfc_add_sequence (symbol_attribute *, const char *, locus *);
3403	bool gfc_add_elemental (symbol_attribute *, locus *);
3404	bool gfc_add_pure (symbol_attribute *, locus *);
3405	bool gfc_add_recursive (symbol_attribute *, locus *);
3406	bool gfc_add_function (symbol_attribute *, const char *, locus *);
3407	bool gfc_add_subroutine (symbol_attribute *, const char *, locus *);
3408	bool gfc_add_volatile (symbol_attribute *, const char *, locus *);
3409	bool gfc_add_asynchronous (symbol_attribute *, const char *, locus *);
3410	bool gfc_add_proc (symbol_attribute *attr, const char *name, locus *where);
3411	bool gfc_add_abstract (symbol_attribute* attr, locus* where);
3412
3413	bool gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
3414	bool gfc_add_is_bind_c (symbol_attribute *, const char *, locus *, int);
3415	bool gfc_add_extension (symbol_attribute *, locus *);
3416	bool gfc_add_value (symbol_attribute *, const char *, locus *);
3417	bool gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
3418	bool gfc_add_entry (symbol_attribute *, const char *, locus *);
3419	bool gfc_add_procedure (symbol_attribute *, procedure_type,
3420	const char *, locus *);
3421	bool gfc_add_intent (symbol_attribute *, sym_intent, locus *);
3422	bool gfc_add_explicit_interface (gfc_symbol *, ifsrc,
3423	gfc_formal_arglist *, locus *);
3424	bool gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
3425
3426	void gfc_clear_attr (symbol_attribute *);
3427	bool gfc_missing_attr (symbol_attribute *, locus *);
3428	bool gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
3429	int gfc_copy_dummy_sym (gfc_symbol **, gfc_symbol *, int);
3430	bool gfc_add_component (gfc_symbol *, const char *, gfc_component **);
3431	gfc_symbol *gfc_use_derived (gfc_symbol *);
3432	gfc_component *gfc_find_component (gfc_symbol *, const char *, bool, bool,
3433	gfc_ref **);
3434
3435	gfc_st_label *gfc_get_st_label (int);
3436	void gfc_free_st_label (gfc_st_label *);
3437	void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
3438	bool gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
3439
3440	gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
3441	gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
3442	gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
3443	void gfc_delete_symtree (gfc_symtree **, const char *);
3444	gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
3445	gfc_user_op *gfc_get_uop (const char *);
3446	gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
3447	void gfc_free_symbol (gfc_symbol *&);
3448	void gfc_release_symbol (gfc_symbol *&);
3449	gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
3450	gfc_symtree* gfc_find_symtree_in_proc (const char *, gfc_namespace *);
3451	int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
3452	int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
3453	int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
3454	bool gfc_verify_c_interop (gfc_typespec *);
3455	bool gfc_verify_c_interop_param (gfc_symbol *);
3456	bool verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
3457	bool verify_bind_c_derived_type (gfc_symbol *);
3458	bool verify_com_block_vars_c_interop (gfc_common_head *);
3459	gfc_symtree *generate_isocbinding_symbol (const char *, iso_c_binding_symbol,
3460	const char *, gfc_symtree *, bool);
3461	void gfc_save_symbol_data (gfc_symbol *);
3462	int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **, bool);
3463	int gfc_get_ha_symbol (const char *, gfc_symbol **);
3464	int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
3465
3466	void gfc_drop_last_undo_checkpoint (void);
3467	void gfc_restore_last_undo_checkpoint (void);
3468	void gfc_undo_symbols (void);
3469	void gfc_commit_symbols (void);
3470	void gfc_commit_symbol (gfc_symbol *);
3471	gfc_charlen *gfc_new_charlen (gfc_namespace *, gfc_charlen *);
3472	void gfc_free_namespace (gfc_namespace *&);
3473
3474	void gfc_symbol_init_2 (void);
3475	void gfc_symbol_done_2 (void);
3476
3477	void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
3478	void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
3479	void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
3480	void gfc_save_all (gfc_namespace *);
3481
3482	void gfc_enforce_clean_symbol_state (void);
3483
3484	gfc_gsymbol *gfc_get_gsymbol (const char *, bool bind_c);
3485	gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
3486	gfc_gsymbol *gfc_find_case_gsymbol (gfc_gsymbol *, const char *);
3487	void gfc_traverse_gsymbol (gfc_gsymbol *, void (*)(gfc_gsymbol *, void *), void *);
3488
3489	gfc_typebound_proc* gfc_get_typebound_proc (gfc_typebound_proc*);
3490	gfc_symbol* gfc_get_derived_super_type (gfc_symbol*);
3491	bool gfc_type_is_extension_of (gfc_symbol *, gfc_symbol *);
3492	bool gfc_type_compatible (gfc_typespec *, gfc_typespec *);
3493
3494	void gfc_copy_formal_args_intr (gfc_symbol *, gfc_intrinsic_sym *,
3495	gfc_actual_arglist *, bool copy_type = false);
3496
3497	void gfc_free_finalizer (gfc_finalizer *el); /* Needed in resolve.cc, too */
3498
3499	bool gfc_check_symbol_typed (gfc_symbol*, gfc_namespace*, bool, locus);
3500	gfc_namespace* gfc_find_proc_namespace (gfc_namespace*);
3501
3502	bool gfc_is_associate_pointer (gfc_symbol*);
3503	gfc_symbol * gfc_find_dt_in_generic (gfc_symbol *);
3504	gfc_formal_arglist *gfc_sym_get_dummy_args (gfc_symbol *);
3505
3506	/* intrinsic.cc -- true if working in an init-expr, false otherwise. */
3507	extern bool gfc_init_expr_flag;
3508
3509	/* Given a symbol that we have decided is intrinsic, mark it as such
3510	by placing it into a special module that is otherwise impossible to
3511	read or write. */
3512
3513	#define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
3514
3515	void gfc_intrinsic_init_1 (void);
3516	void gfc_intrinsic_done_1 (void);
3517
3518	char gfc_type_letter (bt, bool logical_equals_int = false);
3519	int gfc_type_abi_kind (bt, int);
3520	static inline int
3521	gfc_type_abi_kind (gfc_typespec *ts)
3522	{
3523	return gfc_type_abi_kind (ts->type, ts->kind);
3524	}
3525	gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
3526	gfc_symbol *gfc_get_intrinsic_function_symbol (gfc_expr *);
3527	gfc_symbol *gfc_find_intrinsic_symbol (gfc_expr *);
3528	bool gfc_convert_type (gfc_expr *, gfc_typespec *, int);
3529	bool gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int,
3530	bool array = false);
3531	bool gfc_convert_chartype (gfc_expr *, gfc_typespec *);
3532	int gfc_generic_intrinsic (const char *);
3533	int gfc_specific_intrinsic (const char *);
3534	bool gfc_is_intrinsic (gfc_symbol*, int, locus);
3535	int gfc_intrinsic_actual_ok (const char *, const bool);
3536	gfc_intrinsic_sym *gfc_find_function (const char *);
3537	gfc_intrinsic_sym *gfc_find_subroutine (const char *);
3538	gfc_intrinsic_sym *gfc_intrinsic_function_by_id (gfc_isym_id);
3539	gfc_intrinsic_sym *gfc_intrinsic_subroutine_by_id (gfc_isym_id);
3540	gfc_isym_id gfc_isym_id_by_intmod (intmod_id, int);
3541	gfc_isym_id gfc_isym_id_by_intmod_sym (gfc_symbol *);
3542
3543
3544	match gfc_intrinsic_func_interface (gfc_expr *, int);
3545	match gfc_intrinsic_sub_interface (gfc_code *, int);
3546
3547	void gfc_warn_intrinsic_shadow (const gfc_symbol*, bool, bool);
3548	bool gfc_check_intrinsic_standard (const gfc_intrinsic_sym*, const char**,
3549	bool, locus);
3550
3551	/* match.cc -- FIXME */
3552	void gfc_free_iterator (gfc_iterator *, int);
3553	void gfc_free_forall_iterator (gfc_forall_iterator *);
3554	void gfc_free_alloc_list (gfc_alloc *);
3555	void gfc_free_namelist (gfc_namelist *);
3556	void gfc_free_omp_namelist (gfc_omp_namelist *, bool);
3557	void gfc_free_equiv (gfc_equiv *);
3558	void gfc_free_equiv_until (gfc_equiv *, gfc_equiv *);
3559	void gfc_free_data (gfc_data *);
3560	void gfc_reject_data (gfc_namespace *);
3561	void gfc_free_case_list (gfc_case *);
3562
3563	/* matchexp.cc -- FIXME too? */
3564	gfc_expr *gfc_get_parentheses (gfc_expr *);
3565
3566	/* openmp.cc */
3567	struct gfc_omp_saved_state { void *ptrs[2]; int ints[1]; };
3568	bool gfc_omp_requires_add_clause (gfc_omp_requires_kind, const char *,
3569	locus *, const char *);
3570	void gfc_check_omp_requires (gfc_namespace *, int);
3571	void gfc_free_omp_clauses (gfc_omp_clauses *);
3572	void gfc_free_oacc_declare_clauses (struct gfc_oacc_declare *);
3573	void gfc_free_omp_declare_variant_list (gfc_omp_declare_variant *list);
3574	void gfc_free_omp_declare_simd (gfc_omp_declare_simd *);
3575	void gfc_free_omp_declare_simd_list (gfc_omp_declare_simd *);
3576	void gfc_free_omp_udr (gfc_omp_udr *);
3577	gfc_omp_udr *gfc_omp_udr_find (gfc_symtree *, gfc_typespec *);
3578	void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
3579	void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *, bool);
3580	void gfc_resolve_omp_local_vars (gfc_namespace *);
3581	void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
3582	void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
3583	void gfc_resolve_omp_declare_simd (gfc_namespace *);
3584	void gfc_resolve_omp_udrs (gfc_symtree *);
3585	void gfc_omp_save_and_clear_state (struct gfc_omp_saved_state *);
3586	void gfc_omp_restore_state (struct gfc_omp_saved_state *);
3587	void gfc_free_expr_list (gfc_expr_list *);
3588	void gfc_resolve_oacc_directive (gfc_code *, gfc_namespace *);
3589	void gfc_resolve_oacc_declare (gfc_namespace *);
3590	void gfc_resolve_oacc_blocks (gfc_code *, gfc_namespace *);
3591	void gfc_resolve_oacc_routines (gfc_namespace *);
3592
3593	/* expr.cc */
3594	void gfc_free_actual_arglist (gfc_actual_arglist *);
3595	gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
3596
3597	bool gfc_extract_int (gfc_expr *, int *, int = 0);
3598	bool gfc_extract_hwi (gfc_expr *, HOST_WIDE_INT *, int = 0);
3599
3600	bool is_CFI_desc (gfc_symbol *, gfc_expr *);
3601	bool is_subref_array (gfc_expr *);
3602	bool gfc_is_simply_contiguous (gfc_expr *, bool, bool);
3603	bool gfc_is_not_contiguous (gfc_expr *);
3604	bool gfc_check_init_expr (gfc_expr *);
3605
3606	gfc_expr *gfc_build_conversion (gfc_expr *);
3607	void gfc_free_ref_list (gfc_ref *);
3608	void gfc_type_convert_binary (gfc_expr *, int);
3609	bool gfc_is_constant_expr (gfc_expr *);
3610	bool gfc_simplify_expr (gfc_expr *, int);
3611	bool gfc_try_simplify_expr (gfc_expr *, int);
3612	int gfc_has_vector_index (gfc_expr *);
3613
3614	gfc_expr *gfc_get_expr (void);
3615	gfc_expr *gfc_get_array_expr (bt type, int kind, locus *);
3616	gfc_expr *gfc_get_null_expr (locus *);
3617	gfc_expr *gfc_get_operator_expr (locus *, gfc_intrinsic_op,gfc_expr *, gfc_expr *);
3618	gfc_expr *gfc_get_structure_constructor_expr (bt, int, locus *);
3619	gfc_expr *gfc_get_constant_expr (bt, int, locus *);
3620	gfc_expr *gfc_get_character_expr (int, locus *, const char *, gfc_charlen_t len);
3621	gfc_expr *gfc_get_int_expr (int, locus *, HOST_WIDE_INT);
3622	gfc_expr *gfc_get_logical_expr (int, locus *, bool);
3623	gfc_expr *gfc_get_iokind_expr (locus *, io_kind);
3624
3625	void gfc_clear_shape (mpz_t *shape, int rank);
3626	void gfc_free_shape (mpz_t **shape, int rank);
3627	void gfc_free_expr (gfc_expr *);
3628	void gfc_replace_expr (gfc_expr *, gfc_expr *);
3629	mpz_t *gfc_copy_shape (mpz_t *, int);
3630	mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
3631	gfc_expr *gfc_copy_expr (gfc_expr *);
3632	gfc_ref* gfc_copy_ref (gfc_ref*);
3633
3634	bool gfc_specification_expr (gfc_expr *);
3635
3636	int gfc_numeric_ts (gfc_typespec *);
3637	int gfc_kind_max (gfc_expr *, gfc_expr *);
3638
3639	bool gfc_check_conformance (gfc_expr *, gfc_expr *, const char *, ...) ATTRIBUTE_PRINTF_3;
3640	bool gfc_check_assign (gfc_expr *, gfc_expr *, int, bool c = true);
3641	bool gfc_check_pointer_assign (gfc_expr *lvalue, gfc_expr *rvalue,
3642	bool suppres_type_test = false,
3643	bool is_init_expr = false);
3644	bool gfc_check_assign_symbol (gfc_symbol *, gfc_component *, gfc_expr *);
3645
3646	gfc_expr *gfc_build_default_init_expr (gfc_typespec *, locus *);
3647	void gfc_apply_init (gfc_typespec *, symbol_attribute *, gfc_expr *);
3648	bool gfc_has_default_initializer (gfc_symbol *);
3649	gfc_expr *gfc_default_initializer (gfc_typespec *);
3650	gfc_expr *gfc_generate_initializer (gfc_typespec *, bool);
3651	gfc_expr *gfc_get_variable_expr (gfc_symtree *);
3652	void gfc_add_full_array_ref (gfc_expr *, gfc_array_spec *);
3653	gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
3654
3655	gfc_array_spec *gfc_get_full_arrayspec_from_expr (gfc_expr *expr);
3656
3657	bool gfc_traverse_expr (gfc_expr *, gfc_symbol *,
3658	bool (*)(gfc_expr *, gfc_symbol *, int*),
3659	int);
3660	void gfc_expr_set_symbols_referenced (gfc_expr *);
3661	bool gfc_expr_check_typed (gfc_expr*, gfc_namespace*, bool);
3662	bool gfc_derived_parameter_expr (gfc_expr *);
3663	gfc_param_spec_type gfc_spec_list_type (gfc_actual_arglist *, gfc_symbol *);
3664	gfc_component * gfc_get_proc_ptr_comp (gfc_expr *);
3665	bool gfc_is_proc_ptr_comp (gfc_expr *);
3666	bool gfc_is_alloc_class_scalar_function (gfc_expr *);
3667	bool gfc_is_class_array_function (gfc_expr *);
3668
3669	bool gfc_ref_this_image (gfc_ref *ref);
3670	bool gfc_is_coindexed (gfc_expr *);
3671	bool gfc_is_coarray (gfc_expr *);
3672	int gfc_get_corank (gfc_expr *);
3673	bool gfc_has_ultimate_allocatable (gfc_expr *);
3674	bool gfc_has_ultimate_pointer (gfc_expr *);
3675	gfc_expr* gfc_find_team_co (gfc_expr *);
3676	gfc_expr* gfc_find_stat_co (gfc_expr *);
3677	gfc_expr* gfc_build_intrinsic_call (gfc_namespace *, gfc_isym_id, const char*,
3678	locus, unsigned, ...);
3679	bool gfc_check_vardef_context (gfc_expr*, bool, bool, bool, const char*);
3680
3681
3682	/* st.cc */
3683	extern gfc_code new_st;
3684
3685	void gfc_clear_new_st (void);
3686	gfc_code *gfc_get_code (gfc_exec_op);
3687	gfc_code *gfc_append_code (gfc_code *, gfc_code *);
3688	void gfc_free_statement (gfc_code *);
3689	void gfc_free_statements (gfc_code *);
3690	void gfc_free_association_list (gfc_association_list *);
3691
3692	/* resolve.cc */
3693	void gfc_expression_rank (gfc_expr *);
3694	bool gfc_resolve_ref (gfc_expr *);
3695	bool gfc_resolve_expr (gfc_expr *);
3696	void gfc_resolve (gfc_namespace *);
3697	void gfc_resolve_code (gfc_code *, gfc_namespace *);
3698	void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
3699	void gfc_resolve_formal_arglist (gfc_symbol *);
3700	int gfc_impure_variable (gfc_symbol *);
3701	int gfc_pure (gfc_symbol *);
3702	int gfc_implicit_pure (gfc_symbol *);
3703	void gfc_unset_implicit_pure (gfc_symbol *);
3704	int gfc_elemental (gfc_symbol *);
3705	bool gfc_resolve_iterator (gfc_iterator *, bool, bool);
3706	bool find_forall_index (gfc_expr *, gfc_symbol *, int);
3707	bool gfc_resolve_index (gfc_expr *, int);
3708	bool gfc_resolve_dim_arg (gfc_expr *);
3709	bool gfc_is_formal_arg (void);
3710	bool gfc_resolve_substring (gfc_ref *, bool *);
3711	void gfc_resolve_substring_charlen (gfc_expr *);
3712	gfc_expr *gfc_expr_to_initialize (gfc_expr *);
3713	bool gfc_type_is_extensible (gfc_symbol *);
3714	bool gfc_resolve_intrinsic (gfc_symbol *, locus *);
3715	bool gfc_explicit_interface_required (gfc_symbol *, char *, int);
3716	extern int gfc_do_concurrent_flag;
3717	const char* gfc_lookup_function_fuzzy (const char *, gfc_symtree *);
3718	int gfc_pure_function (gfc_expr *e, const char **name);
3719	int gfc_implicit_pure_function (gfc_expr *e);
3720
3721
3722	/* array.cc */
3723	gfc_iterator *gfc_copy_iterator (gfc_iterator *);
3724
3725	void gfc_free_array_spec (gfc_array_spec *);
3726	gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
3727
3728	bool gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
3729	gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
3730	bool gfc_resolve_array_spec (gfc_array_spec *, int);
3731
3732	int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
3733
3734	void gfc_simplify_iterator_var (gfc_expr *);
3735	bool gfc_expand_constructor (gfc_expr *, bool);
3736	int gfc_constant_ac (gfc_expr *);
3737	int gfc_expanded_ac (gfc_expr *);
3738	bool gfc_resolve_character_array_constructor (gfc_expr *);
3739	bool gfc_resolve_array_constructor (gfc_expr *);
3740	bool gfc_check_constructor_type (gfc_expr *);
3741	bool gfc_check_iter_variable (gfc_expr *);
3742	bool gfc_check_constructor (gfc_expr *, bool (*)(gfc_expr *));
3743	bool gfc_array_size (gfc_expr *, mpz_t *);
3744	bool gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
3745	bool gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
3746	gfc_array_ref *gfc_find_array_ref (gfc_expr *, bool a = false);
3747	tree gfc_conv_array_initializer (tree type, gfc_expr *);
3748	bool spec_size (gfc_array_spec *, mpz_t *);
3749	bool spec_dimen_size (gfc_array_spec *, int, mpz_t *);
3750	bool gfc_is_compile_time_shape (gfc_array_spec *);
3751
3752	bool gfc_ref_dimen_size (gfc_array_ref *, int dimen, mpz_t *, mpz_t *);
3753
3754	/* interface.cc -- FIXME: some of these should be in symbol.cc */
3755	void gfc_free_interface (gfc_interface *);
3756	bool gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
3757	bool gfc_compare_types (gfc_typespec *, gfc_typespec *);
3758	bool gfc_check_dummy_characteristics (gfc_symbol *, gfc_symbol *,
3759	bool, char *, int);
3760	bool gfc_check_result_characteristics (gfc_symbol *, gfc_symbol *,
3761	char *, int);
3762	bool gfc_compare_interfaces (gfc_symbol*, gfc_symbol*, const char *, int, int,
3763	char *, int, const char *, const char *,
3764	bool *bad_result_characteristics = NULL);
3765	void gfc_check_interfaces (gfc_namespace *);
3766	bool gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
3767	void gfc_ppc_use (gfc_component *, gfc_actual_arglist **, locus *);
3768	gfc_symbol *gfc_search_interface (gfc_interface *, int,
3769	gfc_actual_arglist **);
3770	match gfc_extend_expr (gfc_expr *);
3771	void gfc_free_formal_arglist (gfc_formal_arglist *);
3772	bool gfc_extend_assign (gfc_code *, gfc_namespace *);
3773	bool gfc_check_new_interface (gfc_interface *, gfc_symbol *, locus);
3774	bool gfc_add_interface (gfc_symbol *);
3775	gfc_interface *gfc_current_interface_head (void);
3776	void gfc_set_current_interface_head (gfc_interface *);
3777	gfc_symtree* gfc_find_sym_in_symtree (gfc_symbol*);
3778	bool gfc_arglist_matches_symbol (gfc_actual_arglist**, gfc_symbol*);
3779	bool gfc_check_operator_interface (gfc_symbol*, gfc_intrinsic_op, locus);
3780	bool gfc_has_vector_subscript (gfc_expr*);
3781	gfc_intrinsic_op gfc_equivalent_op (gfc_intrinsic_op);
3782	bool gfc_check_typebound_override (gfc_symtree*, gfc_symtree*);
3783	void gfc_check_dtio_interfaces (gfc_symbol*);
3784	gfc_symtree* gfc_find_typebound_dtio_proc (gfc_symbol *, bool, bool);
3785	gfc_symbol* gfc_find_specific_dtio_proc (gfc_symbol*, bool, bool);
3786	void gfc_get_formal_from_actual_arglist (gfc_symbol *, gfc_actual_arglist *);
3787	bool gfc_compare_actual_formal (gfc_actual_arglist **, gfc_formal_arglist *,
3788	int, int, bool, locus *);
3789
3790
3791	/* io.cc */
3792	extern gfc_st_label format_asterisk;
3793
3794	void gfc_free_open (gfc_open *);
3795	bool gfc_resolve_open (gfc_open *, locus *);
3796	void gfc_free_close (gfc_close *);
3797	bool gfc_resolve_close (gfc_close *, locus *);
3798	void gfc_free_filepos (gfc_filepos *);
3799	bool gfc_resolve_filepos (gfc_filepos *, locus *);
3800	void gfc_free_inquire (gfc_inquire *);
3801	bool gfc_resolve_inquire (gfc_inquire *);
3802	void gfc_free_dt (gfc_dt *);
3803	bool gfc_resolve_dt (gfc_code *, gfc_dt *, locus *);
3804	void gfc_free_wait (gfc_wait *);
3805	bool gfc_resolve_wait (gfc_wait *);
3806
3807	/* module.cc */
3808	void gfc_module_init_2 (void);
3809	void gfc_module_done_2 (void);
3810	void gfc_dump_module (const char *, int);
3811	bool gfc_check_symbol_access (gfc_symbol *);
3812	void gfc_free_use_stmts (gfc_use_list *);
3813	const char *gfc_dt_lower_string (const char *);
3814	const char *gfc_dt_upper_string (const char *);
3815
3816	/* primary.cc */
3817	symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
3818	symbol_attribute gfc_expr_attr (gfc_expr *);
3819	symbol_attribute gfc_caf_attr (gfc_expr *, bool i = false, bool *r = NULL);
3820	match gfc_match_rvalue (gfc_expr **);
3821	match gfc_match_varspec (gfc_expr*, int, bool, bool);
3822	int gfc_check_digit (char, int);
3823	bool gfc_is_function_return_value (gfc_symbol *, gfc_namespace *);
3824	bool gfc_convert_to_structure_constructor (gfc_expr *, gfc_symbol *,
3825	gfc_expr **,
3826	gfc_actual_arglist **, bool);
3827
3828	/* trans.cc */
3829	void gfc_generate_code (gfc_namespace *);
3830	void gfc_generate_module_code (gfc_namespace *);
3831
3832	/* trans-intrinsic.cc */
3833	bool gfc_inline_intrinsic_function_p (gfc_expr *);
3834
3835	/* bbt.cc */
3836	typedef int (*compare_fn) (void *, void *);
3837	void gfc_insert_bbt (void *, void *, compare_fn);
3838	void gfc_delete_bbt (void *, void *, compare_fn);
3839
3840	/* dump-parse-tree.cc */
3841	void gfc_dump_parse_tree (gfc_namespace *, FILE *);
3842	void gfc_dump_c_prototypes (gfc_namespace *, FILE *);
3843	void gfc_dump_external_c_prototypes (FILE *);
3844	void gfc_dump_global_symbols (FILE *);
3845	void debug (gfc_symbol *);
3846	void debug (gfc_expr *);
3847
3848	/* parse.cc */
3849	bool gfc_parse_file (void);
3850	void gfc_global_used (gfc_gsymbol *, locus *);
3851	gfc_namespace* gfc_build_block_ns (gfc_namespace *);
3852
3853	/* dependency.cc */
3854	int gfc_dep_compare_functions (gfc_expr *, gfc_expr *, bool);
3855	int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
3856	bool gfc_dep_difference (gfc_expr *, gfc_expr *, mpz_t *);
3857
3858	/* check.cc */
3859	bool gfc_check_same_strlen (const gfc_expr*, const gfc_expr*, const char*);
3860	bool gfc_calculate_transfer_sizes (gfc_expr*, gfc_expr*, gfc_expr*,
3861	size_t*, size_t*, size_t*);
3862	bool gfc_boz2int (gfc_expr *, int);
3863	bool gfc_boz2real (gfc_expr *, int);
3864	bool gfc_invalid_boz (const char *, locus *);
3865	bool gfc_invalid_null_arg (gfc_expr *);
3866
3867
3868	/* class.cc */
3869	void gfc_fix_class_refs (gfc_expr *e);
3870	void gfc_add_component_ref (gfc_expr *, const char *);
3871	void gfc_add_class_array_ref (gfc_expr *);
3872	#define gfc_add_data_component(e) gfc_add_component_ref(e,"_data")
3873	#define gfc_add_vptr_component(e) gfc_add_component_ref(e,"_vptr")
3874	#define gfc_add_len_component(e) gfc_add_component_ref(e,"_len")
3875	#define gfc_add_hash_component(e) gfc_add_component_ref(e,"_hash")
3876	#define gfc_add_size_component(e) gfc_add_component_ref(e,"_size")
3877	#define gfc_add_def_init_component(e) gfc_add_component_ref(e,"_def_init")
3878	#define gfc_add_final_component(e) gfc_add_component_ref(e,"_final")
3879	bool gfc_is_class_array_ref (gfc_expr *, bool *);
3880	bool gfc_is_class_scalar_expr (gfc_expr *);
3881	bool gfc_is_class_container_ref (gfc_expr *e);
3882	gfc_expr *gfc_class_initializer (gfc_typespec *, gfc_expr *);
3883	unsigned int gfc_hash_value (gfc_symbol *);
3884	gfc_expr *gfc_get_len_component (gfc_expr *e, int);
3885	bool gfc_build_class_symbol (gfc_typespec *, symbol_attribute *,
3886	gfc_array_spec **);
3887	gfc_symbol *gfc_find_derived_vtab (gfc_symbol *);
3888	gfc_symbol *gfc_find_vtab (gfc_typespec *);
3889	gfc_symtree* gfc_find_typebound_proc (gfc_symbol*, bool*,
3890	const char*, bool, locus*);
3891	gfc_symtree* gfc_find_typebound_user_op (gfc_symbol*, bool*,
3892	const char*, bool, locus*);
3893	gfc_typebound_proc* gfc_find_typebound_intrinsic_op (gfc_symbol*, bool*,
3894	gfc_intrinsic_op, bool,
3895	locus*);
3896	gfc_symtree* gfc_get_tbp_symtree (gfc_symtree**, const char*);
3897	bool gfc_is_finalizable (gfc_symbol *, gfc_expr **);
3898
3899	#define CLASS_DATA(sym) sym->ts.u.derived->components
3900	#define UNLIMITED_POLY(sym) \
3901	(sym != NULL && sym->ts.type == BT_CLASS \
3902	&& CLASS_DATA (sym) \
3903	&& CLASS_DATA (sym)->ts.u.derived \
3904	&& CLASS_DATA (sym)->ts.u.derived->attr.unlimited_polymorphic)
3905	#define IS_CLASS_ARRAY(sym) \
3906	(sym->ts.type == BT_CLASS \
3907	&& CLASS_DATA (sym) \
3908	&& CLASS_DATA (sym)->attr.dimension \
3909	&& !CLASS_DATA (sym)->attr.class_pointer)
3910	#define IS_POINTER(sym) \
3911	(sym->ts.type == BT_CLASS && sym->attr.class_ok && CLASS_DATA (sym) \
3912	? CLASS_DATA (sym)->attr.class_pointer : sym->attr.pointer)
3913
3914	/* frontend-passes.cc */
3915
3916	void gfc_run_passes (gfc_namespace *);
3917
3918	typedef int (*walk_code_fn_t) (gfc_code **, int *, void *);
3919	typedef int (*walk_expr_fn_t) (gfc_expr **, int *, void *);
3920
3921	int gfc_dummy_code_callback (gfc_code **, int *, void *);
3922	int gfc_expr_walker (gfc_expr **, walk_expr_fn_t, void *);
3923	int gfc_code_walker (gfc_code **, walk_code_fn_t, walk_expr_fn_t, void *);
3924	bool gfc_has_dimen_vector_ref (gfc_expr *e);
3925	void gfc_check_externals (gfc_namespace *);
3926	bool gfc_fix_implicit_pure (gfc_namespace *);
3927
3928	/* simplify.cc */
3929
3930	void gfc_convert_mpz_to_signed (mpz_t, int);
3931	gfc_expr *gfc_simplify_ieee_functions (gfc_expr *);
3932	bool gfc_is_size_zero_array (gfc_expr *);
3933
3934	/* trans-array.cc */
3935
3936	bool gfc_is_reallocatable_lhs (gfc_expr *);
3937
3938	/* trans-decl.cc */
3939
3940	void finish_oacc_declare (gfc_namespace *, gfc_symbol *, bool);
3941	void gfc_adjust_builtins (void);
3942
3943	#endif /* GCC_GFORTRAN_H */
3944