1 | /* Build executable statement trees. |
2 | Copyright (C) 2000-2023 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 | /* Executable statements are strung together into a singly linked list |
22 | of code structures. These structures are later translated into GCC |
23 | GENERIC tree structures and from there to executable code for a |
24 | target. */ |
25 | |
26 | #include "config.h" |
27 | #include "system.h" |
28 | #include "coretypes.h" |
29 | #include "gfortran.h" |
30 | |
31 | gfc_code new_st; |
32 | |
33 | |
34 | /* Zeroes out the new_st structure. */ |
35 | |
36 | void |
37 | gfc_clear_new_st (void) |
38 | { |
39 | memset (s: &new_st, c: '\0', n: sizeof (new_st)); |
40 | new_st.op = EXEC_NOP; |
41 | } |
42 | |
43 | |
44 | /* Get a gfc_code structure, initialized with the current locus |
45 | and a statement code 'op'. */ |
46 | |
47 | gfc_code * |
48 | gfc_get_code (gfc_exec_op op) |
49 | { |
50 | gfc_code *c; |
51 | |
52 | c = XCNEW (gfc_code); |
53 | c->op = op; |
54 | c->loc = gfc_current_locus; |
55 | return c; |
56 | } |
57 | |
58 | |
59 | /* Given some part of a gfc_code structure, append a set of code to |
60 | its tail, returning a pointer to the new tail. */ |
61 | |
62 | gfc_code * |
63 | gfc_append_code (gfc_code *tail, gfc_code *new_code) |
64 | { |
65 | if (tail != NULL) |
66 | { |
67 | while (tail->next != NULL) |
68 | tail = tail->next; |
69 | |
70 | tail->next = new_code; |
71 | } |
72 | |
73 | while (new_code->next != NULL) |
74 | new_code = new_code->next; |
75 | |
76 | return new_code; |
77 | } |
78 | |
79 | |
80 | /* Free a single code structure, but not the actual structure itself. */ |
81 | |
82 | void |
83 | gfc_free_statement (gfc_code *p) |
84 | { |
85 | if (p->expr1) |
86 | gfc_free_expr (p->expr1); |
87 | if (p->expr2) |
88 | gfc_free_expr (p->expr2); |
89 | |
90 | switch (p->op) |
91 | { |
92 | case EXEC_NOP: |
93 | case EXEC_END_BLOCK: |
94 | case EXEC_END_NESTED_BLOCK: |
95 | case EXEC_ASSIGN: |
96 | case EXEC_INIT_ASSIGN: |
97 | case EXEC_GOTO: |
98 | case EXEC_CYCLE: |
99 | case EXEC_RETURN: |
100 | case EXEC_END_PROCEDURE: |
101 | case EXEC_IF: |
102 | case EXEC_PAUSE: |
103 | case EXEC_STOP: |
104 | case EXEC_ERROR_STOP: |
105 | case EXEC_EXIT: |
106 | case EXEC_WHERE: |
107 | case EXEC_IOLENGTH: |
108 | case EXEC_POINTER_ASSIGN: |
109 | case EXEC_DO_WHILE: |
110 | case EXEC_CONTINUE: |
111 | case EXEC_TRANSFER: |
112 | case EXEC_LABEL_ASSIGN: |
113 | case EXEC_ENTRY: |
114 | case EXEC_ARITHMETIC_IF: |
115 | case EXEC_CRITICAL: |
116 | case EXEC_SYNC_ALL: |
117 | case EXEC_SYNC_IMAGES: |
118 | case EXEC_SYNC_MEMORY: |
119 | case EXEC_LOCK: |
120 | case EXEC_UNLOCK: |
121 | case EXEC_EVENT_POST: |
122 | case EXEC_EVENT_WAIT: |
123 | case EXEC_FAIL_IMAGE: |
124 | case EXEC_CHANGE_TEAM: |
125 | case EXEC_END_TEAM: |
126 | case EXEC_FORM_TEAM: |
127 | case EXEC_SYNC_TEAM: |
128 | break; |
129 | |
130 | case EXEC_BLOCK: |
131 | gfc_free_namespace (p->ext.block.ns); |
132 | gfc_free_association_list (p->ext.block.assoc); |
133 | break; |
134 | |
135 | case EXEC_COMPCALL: |
136 | case EXEC_CALL_PPC: |
137 | case EXEC_CALL: |
138 | case EXEC_ASSIGN_CALL: |
139 | gfc_free_actual_arglist (p->ext.actual); |
140 | break; |
141 | |
142 | case EXEC_SELECT: |
143 | case EXEC_SELECT_TYPE: |
144 | case EXEC_SELECT_RANK: |
145 | if (p->ext.block.case_list) |
146 | gfc_free_case_list (p->ext.block.case_list); |
147 | break; |
148 | |
149 | case EXEC_DO: |
150 | gfc_free_iterator (p->ext.iterator, 1); |
151 | break; |
152 | |
153 | case EXEC_ALLOCATE: |
154 | case EXEC_DEALLOCATE: |
155 | gfc_free_alloc_list (p->ext.alloc.list); |
156 | break; |
157 | |
158 | case EXEC_OPEN: |
159 | gfc_free_open (p->ext.open); |
160 | break; |
161 | |
162 | case EXEC_CLOSE: |
163 | gfc_free_close (p->ext.close); |
164 | break; |
165 | |
166 | case EXEC_BACKSPACE: |
167 | case EXEC_ENDFILE: |
168 | case EXEC_REWIND: |
169 | case EXEC_FLUSH: |
170 | gfc_free_filepos (p->ext.filepos); |
171 | break; |
172 | |
173 | case EXEC_INQUIRE: |
174 | gfc_free_inquire (p->ext.inquire); |
175 | break; |
176 | |
177 | case EXEC_WAIT: |
178 | gfc_free_wait (p->ext.wait); |
179 | break; |
180 | |
181 | case EXEC_READ: |
182 | case EXEC_WRITE: |
183 | gfc_free_dt (p->ext.dt); |
184 | break; |
185 | |
186 | case EXEC_DT_END: |
187 | /* The ext.dt member is a duplicate pointer and doesn't need to |
188 | be freed. */ |
189 | break; |
190 | |
191 | case EXEC_DO_CONCURRENT: |
192 | case EXEC_FORALL: |
193 | gfc_free_forall_iterator (p->ext.forall_iterator); |
194 | break; |
195 | |
196 | case EXEC_OACC_DECLARE: |
197 | if (p->ext.oacc_declare) |
198 | gfc_free_oacc_declare_clauses (p->ext.oacc_declare); |
199 | break; |
200 | |
201 | case EXEC_OACC_ATOMIC: |
202 | case EXEC_OACC_PARALLEL_LOOP: |
203 | case EXEC_OACC_PARALLEL: |
204 | case EXEC_OACC_KERNELS_LOOP: |
205 | case EXEC_OACC_KERNELS: |
206 | case EXEC_OACC_SERIAL_LOOP: |
207 | case EXEC_OACC_SERIAL: |
208 | case EXEC_OACC_DATA: |
209 | case EXEC_OACC_HOST_DATA: |
210 | case EXEC_OACC_LOOP: |
211 | case EXEC_OACC_UPDATE: |
212 | case EXEC_OACC_WAIT: |
213 | case EXEC_OACC_CACHE: |
214 | case EXEC_OACC_ENTER_DATA: |
215 | case EXEC_OACC_EXIT_DATA: |
216 | case EXEC_OACC_ROUTINE: |
217 | case EXEC_OMP_ALLOCATE: |
218 | case EXEC_OMP_ALLOCATORS: |
219 | case EXEC_OMP_ASSUME: |
220 | case EXEC_OMP_ATOMIC: |
221 | case EXEC_OMP_CANCEL: |
222 | case EXEC_OMP_CANCELLATION_POINT: |
223 | case EXEC_OMP_CRITICAL: |
224 | case EXEC_OMP_DEPOBJ: |
225 | case EXEC_OMP_DISTRIBUTE: |
226 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO: |
227 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD: |
228 | case EXEC_OMP_DISTRIBUTE_SIMD: |
229 | case EXEC_OMP_DO: |
230 | case EXEC_OMP_DO_SIMD: |
231 | case EXEC_OMP_ERROR: |
232 | case EXEC_OMP_LOOP: |
233 | case EXEC_OMP_END_SINGLE: |
234 | case EXEC_OMP_MASKED_TASKLOOP: |
235 | case EXEC_OMP_MASKED_TASKLOOP_SIMD: |
236 | case EXEC_OMP_MASTER_TASKLOOP: |
237 | case EXEC_OMP_MASTER_TASKLOOP_SIMD: |
238 | case EXEC_OMP_ORDERED: |
239 | case EXEC_OMP_MASKED: |
240 | case EXEC_OMP_PARALLEL: |
241 | case EXEC_OMP_PARALLEL_DO: |
242 | case EXEC_OMP_PARALLEL_DO_SIMD: |
243 | case EXEC_OMP_PARALLEL_LOOP: |
244 | case EXEC_OMP_PARALLEL_MASKED: |
245 | case EXEC_OMP_PARALLEL_MASKED_TASKLOOP: |
246 | case EXEC_OMP_PARALLEL_MASKED_TASKLOOP_SIMD: |
247 | case EXEC_OMP_PARALLEL_MASTER: |
248 | case EXEC_OMP_PARALLEL_MASTER_TASKLOOP: |
249 | case EXEC_OMP_PARALLEL_MASTER_TASKLOOP_SIMD: |
250 | case EXEC_OMP_PARALLEL_SECTIONS: |
251 | case EXEC_OMP_PARALLEL_WORKSHARE: |
252 | case EXEC_OMP_SCAN: |
253 | case EXEC_OMP_SCOPE: |
254 | case EXEC_OMP_SECTIONS: |
255 | case EXEC_OMP_SIMD: |
256 | case EXEC_OMP_SINGLE: |
257 | case EXEC_OMP_TARGET: |
258 | case EXEC_OMP_TARGET_DATA: |
259 | case EXEC_OMP_TARGET_ENTER_DATA: |
260 | case EXEC_OMP_TARGET_EXIT_DATA: |
261 | case EXEC_OMP_TARGET_PARALLEL: |
262 | case EXEC_OMP_TARGET_PARALLEL_DO: |
263 | case EXEC_OMP_TARGET_PARALLEL_DO_SIMD: |
264 | case EXEC_OMP_TARGET_PARALLEL_LOOP: |
265 | case EXEC_OMP_TARGET_SIMD: |
266 | case EXEC_OMP_TARGET_TEAMS: |
267 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE: |
268 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO: |
269 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: |
270 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD: |
271 | case EXEC_OMP_TARGET_TEAMS_LOOP: |
272 | case EXEC_OMP_TARGET_UPDATE: |
273 | case EXEC_OMP_TASK: |
274 | case EXEC_OMP_TASKLOOP: |
275 | case EXEC_OMP_TASKLOOP_SIMD: |
276 | case EXEC_OMP_TEAMS: |
277 | case EXEC_OMP_TEAMS_DISTRIBUTE: |
278 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO: |
279 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: |
280 | case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD: |
281 | case EXEC_OMP_TEAMS_LOOP: |
282 | case EXEC_OMP_WORKSHARE: |
283 | gfc_free_omp_clauses (p->ext.omp_clauses); |
284 | break; |
285 | |
286 | case EXEC_OMP_END_CRITICAL: |
287 | free (CONST_CAST (char *, p->ext.omp_name)); |
288 | break; |
289 | |
290 | case EXEC_OMP_FLUSH: |
291 | gfc_free_omp_namelist (p->ext.omp_namelist, false, false, false); |
292 | break; |
293 | |
294 | case EXEC_OMP_BARRIER: |
295 | case EXEC_OMP_MASTER: |
296 | case EXEC_OMP_END_NOWAIT: |
297 | case EXEC_OMP_TASKGROUP: |
298 | case EXEC_OMP_TASKWAIT: |
299 | case EXEC_OMP_TASKYIELD: |
300 | break; |
301 | |
302 | default: |
303 | gfc_internal_error ("gfc_free_statement(): Bad statement" ); |
304 | } |
305 | } |
306 | |
307 | |
308 | /* Free a code statement and all other code structures linked to it. */ |
309 | |
310 | void |
311 | gfc_free_statements (gfc_code *p) |
312 | { |
313 | gfc_code *q; |
314 | |
315 | for (; p; p = q) |
316 | { |
317 | q = p->next; |
318 | |
319 | if (p->block) |
320 | gfc_free_statements (p: p->block); |
321 | gfc_free_statement (p); |
322 | free (ptr: p); |
323 | } |
324 | } |
325 | |
326 | |
327 | /* Free an association list (of an ASSOCIATE statement). */ |
328 | |
329 | void |
330 | gfc_free_association_list (gfc_association_list* assoc) |
331 | { |
332 | if (!assoc) |
333 | return; |
334 | |
335 | gfc_free_association_list (assoc: assoc->next); |
336 | free (ptr: assoc); |
337 | } |
338 | |