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6de9cd9a | 1 | /* Build executable statement trees. |
8d9254fc | 2 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a DN |
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" | |
d22e4895 | 27 | #include "system.h" |
953bee7c | 28 | #include "coretypes.h" |
6de9cd9a | 29 | #include "gfortran.h" |
6de9cd9a DN |
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 | { | |
6de9cd9a DN |
39 | memset (&new_st, '\0', sizeof (new_st)); |
40 | new_st.op = EXEC_NOP; | |
41 | } | |
42 | ||
43 | ||
11e5274a JW |
44 | /* Get a gfc_code structure, initialized with the current locus |
45 | and a statement code 'op'. */ | |
6de9cd9a DN |
46 | |
47 | gfc_code * | |
11e5274a | 48 | gfc_get_code (gfc_exec_op op) |
6de9cd9a DN |
49 | { |
50 | gfc_code *c; | |
51 | ||
ece3f663 | 52 | c = XCNEW (gfc_code); |
11e5274a | 53 | c->op = op; |
63645982 | 54 | c->loc = gfc_current_locus; |
6de9cd9a DN |
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 * | |
7b901ac4 | 63 | gfc_append_code (gfc_code *tail, gfc_code *new_code) |
6de9cd9a | 64 | { |
6de9cd9a DN |
65 | if (tail != NULL) |
66 | { | |
67 | while (tail->next != NULL) | |
68 | tail = tail->next; | |
69 | ||
7b901ac4 | 70 | tail->next = new_code; |
6de9cd9a DN |
71 | } |
72 | ||
7b901ac4 KG |
73 | while (new_code->next != NULL) |
74 | new_code = new_code->next; | |
6de9cd9a | 75 | |
7b901ac4 | 76 | return new_code; |
6de9cd9a DN |
77 | } |
78 | ||
79 | ||
80 | /* Free a single code structure, but not the actual structure itself. */ | |
81 | ||
82 | void | |
edf1eac2 | 83 | gfc_free_statement (gfc_code *p) |
6de9cd9a | 84 | { |
a513927a SK |
85 | if (p->expr1) |
86 | gfc_free_expr (p->expr1); | |
6de9cd9a DN |
87 | if (p->expr2) |
88 | gfc_free_expr (p->expr2); | |
89 | ||
90 | switch (p->op) | |
91 | { | |
92 | case EXEC_NOP: | |
d80c695f | 93 | case EXEC_END_BLOCK: |
df1a69f6 | 94 | case EXEC_END_NESTED_BLOCK: |
6de9cd9a | 95 | case EXEC_ASSIGN: |
6b591ec0 | 96 | case EXEC_INIT_ASSIGN: |
6de9cd9a DN |
97 | case EXEC_GOTO: |
98 | case EXEC_CYCLE: | |
99 | case EXEC_RETURN: | |
5c71a5e0 | 100 | case EXEC_END_PROCEDURE: |
6de9cd9a DN |
101 | case EXEC_IF: |
102 | case EXEC_PAUSE: | |
103 | case EXEC_STOP: | |
d0a4a61c | 104 | case EXEC_ERROR_STOP: |
6de9cd9a DN |
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: | |
3d79abbd | 113 | case EXEC_ENTRY: |
6de9cd9a | 114 | case EXEC_ARITHMETIC_IF: |
d0a4a61c TB |
115 | case EXEC_CRITICAL: |
116 | case EXEC_SYNC_ALL: | |
117 | case EXEC_SYNC_IMAGES: | |
118 | case EXEC_SYNC_MEMORY: | |
5493aa17 TB |
119 | case EXEC_LOCK: |
120 | case EXEC_UNLOCK: | |
5df445a2 TB |
121 | case EXEC_EVENT_POST: |
122 | case EXEC_EVENT_WAIT: | |
ef78bc3c | 123 | case EXEC_FAIL_IMAGE: |
f8862a1b DR |
124 | case EXEC_CHANGE_TEAM: |
125 | case EXEC_END_TEAM: | |
126 | case EXEC_FORM_TEAM: | |
127 | case EXEC_SYNC_TEAM: | |
6de9cd9a DN |
128 | break; |
129 | ||
9abe5e56 | 130 | case EXEC_BLOCK: |
03af1e4c DK |
131 | gfc_free_namespace (p->ext.block.ns); |
132 | gfc_free_association_list (p->ext.block.assoc); | |
9abe5e56 DK |
133 | break; |
134 | ||
8e1f752a | 135 | case EXEC_COMPCALL: |
713485cc | 136 | case EXEC_CALL_PPC: |
6de9cd9a | 137 | case EXEC_CALL: |
476220e7 | 138 | case EXEC_ASSIGN_CALL: |
6de9cd9a DN |
139 | gfc_free_actual_arglist (p->ext.actual); |
140 | break; | |
141 | ||
142 | case EXEC_SELECT: | |
cf2b3c22 | 143 | case EXEC_SELECT_TYPE: |
70570ec1 | 144 | case EXEC_SELECT_RANK: |
29a63d67 TB |
145 | if (p->ext.block.case_list) |
146 | gfc_free_case_list (p->ext.block.case_list); | |
6de9cd9a DN |
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: | |
cf2b3c22 | 155 | gfc_free_alloc_list (p->ext.alloc.list); |
6de9cd9a DN |
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: | |
6403ec5f | 169 | case EXEC_FLUSH: |
6de9cd9a DN |
170 | gfc_free_filepos (p->ext.filepos); |
171 | break; | |
172 | ||
173 | case EXEC_INQUIRE: | |
174 | gfc_free_inquire (p->ext.inquire); | |
175 | break; | |
176 | ||
6f0f0b2e JD |
177 | case EXEC_WAIT: |
178 | gfc_free_wait (p->ext.wait); | |
179 | break; | |
180 | ||
6de9cd9a DN |
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 | |
edf1eac2 | 188 | be freed. */ |
6de9cd9a DN |
189 | break; |
190 | ||
8c6a85e3 | 191 | case EXEC_DO_CONCURRENT: |
6de9cd9a DN |
192 | case EXEC_FORALL: |
193 | gfc_free_forall_iterator (p->ext.forall_iterator); | |
194 | break; | |
195 | ||
dc7a8b4b JN |
196 | case EXEC_OACC_DECLARE: |
197 | if (p->ext.oacc_declare) | |
198 | gfc_free_oacc_declare_clauses (p->ext.oacc_declare); | |
199 | break; | |
200 | ||
41dbbb37 TS |
201 | case EXEC_OACC_PARALLEL_LOOP: |
202 | case EXEC_OACC_PARALLEL: | |
203 | case EXEC_OACC_KERNELS_LOOP: | |
204 | case EXEC_OACC_KERNELS: | |
62aee289 MR |
205 | case EXEC_OACC_SERIAL_LOOP: |
206 | case EXEC_OACC_SERIAL: | |
41dbbb37 TS |
207 | case EXEC_OACC_DATA: |
208 | case EXEC_OACC_HOST_DATA: | |
209 | case EXEC_OACC_LOOP: | |
210 | case EXEC_OACC_UPDATE: | |
211 | case EXEC_OACC_WAIT: | |
212 | case EXEC_OACC_CACHE: | |
213 | case EXEC_OACC_ENTER_DATA: | |
214 | case EXEC_OACC_EXIT_DATA: | |
db941d7e | 215 | case EXEC_OACC_ROUTINE: |
dd2fc525 JJ |
216 | case EXEC_OMP_CANCEL: |
217 | case EXEC_OMP_CANCELLATION_POINT: | |
b4c3a85b | 218 | case EXEC_OMP_CRITICAL: |
f014c653 JJ |
219 | case EXEC_OMP_DISTRIBUTE: |
220 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO: | |
221 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD: | |
222 | case EXEC_OMP_DISTRIBUTE_SIMD: | |
6c7a4dfd | 223 | case EXEC_OMP_DO: |
dd2fc525 | 224 | case EXEC_OMP_DO_SIMD: |
6c7a4dfd | 225 | case EXEC_OMP_END_SINGLE: |
b4c3a85b | 226 | case EXEC_OMP_ORDERED: |
6c7a4dfd JJ |
227 | case EXEC_OMP_PARALLEL: |
228 | case EXEC_OMP_PARALLEL_DO: | |
dd2fc525 | 229 | case EXEC_OMP_PARALLEL_DO_SIMD: |
6c7a4dfd | 230 | case EXEC_OMP_PARALLEL_SECTIONS: |
b4c3a85b | 231 | case EXEC_OMP_PARALLEL_WORKSHARE: |
6c7a4dfd | 232 | case EXEC_OMP_SECTIONS: |
dd2fc525 | 233 | case EXEC_OMP_SIMD: |
6c7a4dfd | 234 | case EXEC_OMP_SINGLE: |
f014c653 JJ |
235 | case EXEC_OMP_TARGET: |
236 | case EXEC_OMP_TARGET_DATA: | |
b4c3a85b JJ |
237 | case EXEC_OMP_TARGET_ENTER_DATA: |
238 | case EXEC_OMP_TARGET_EXIT_DATA: | |
239 | case EXEC_OMP_TARGET_PARALLEL: | |
240 | case EXEC_OMP_TARGET_PARALLEL_DO: | |
241 | case EXEC_OMP_TARGET_PARALLEL_DO_SIMD: | |
242 | case EXEC_OMP_TARGET_SIMD: | |
f014c653 JJ |
243 | case EXEC_OMP_TARGET_TEAMS: |
244 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE: | |
245 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
246 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
247 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD: | |
248 | case EXEC_OMP_TARGET_UPDATE: | |
a68ab351 | 249 | case EXEC_OMP_TASK: |
b4c3a85b JJ |
250 | case EXEC_OMP_TASKLOOP: |
251 | case EXEC_OMP_TASKLOOP_SIMD: | |
f014c653 JJ |
252 | case EXEC_OMP_TEAMS: |
253 | case EXEC_OMP_TEAMS_DISTRIBUTE: | |
254 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
255 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
256 | case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD: | |
6c7a4dfd | 257 | case EXEC_OMP_WORKSHARE: |
6c7a4dfd JJ |
258 | gfc_free_omp_clauses (p->ext.omp_clauses); |
259 | break; | |
260 | ||
b4c3a85b | 261 | case EXEC_OMP_END_CRITICAL: |
cede9502 | 262 | free (CONST_CAST (char *, p->ext.omp_name)); |
6c7a4dfd JJ |
263 | break; |
264 | ||
265 | case EXEC_OMP_FLUSH: | |
dd2fc525 | 266 | gfc_free_omp_namelist (p->ext.omp_namelist); |
6c7a4dfd JJ |
267 | break; |
268 | ||
4bf9e5a8 | 269 | case EXEC_OACC_ATOMIC: |
6c7a4dfd JJ |
270 | case EXEC_OMP_ATOMIC: |
271 | case EXEC_OMP_BARRIER: | |
272 | case EXEC_OMP_MASTER: | |
6c7a4dfd | 273 | case EXEC_OMP_END_NOWAIT: |
dd2fc525 | 274 | case EXEC_OMP_TASKGROUP: |
a68ab351 | 275 | case EXEC_OMP_TASKWAIT: |
20906c66 | 276 | case EXEC_OMP_TASKYIELD: |
6c7a4dfd JJ |
277 | break; |
278 | ||
6de9cd9a DN |
279 | default: |
280 | gfc_internal_error ("gfc_free_statement(): Bad statement"); | |
281 | } | |
282 | } | |
283 | ||
284 | ||
285 | /* Free a code statement and all other code structures linked to it. */ | |
286 | ||
287 | void | |
edf1eac2 | 288 | gfc_free_statements (gfc_code *p) |
6de9cd9a DN |
289 | { |
290 | gfc_code *q; | |
291 | ||
292 | for (; p; p = q) | |
293 | { | |
294 | q = p->next; | |
295 | ||
296 | if (p->block) | |
297 | gfc_free_statements (p->block); | |
298 | gfc_free_statement (p); | |
cede9502 | 299 | free (p); |
6de9cd9a DN |
300 | } |
301 | } | |
302 | ||
03af1e4c DK |
303 | |
304 | /* Free an association list (of an ASSOCIATE statement). */ | |
305 | ||
306 | void | |
307 | gfc_free_association_list (gfc_association_list* assoc) | |
308 | { | |
309 | if (!assoc) | |
310 | return; | |
311 | ||
312 | gfc_free_association_list (assoc->next); | |
cede9502 | 313 | free (assoc); |
03af1e4c | 314 | } |