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4ee9c684 | 1 | /* Build executable statement trees. |
fbd26352 | 2 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 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 | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 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. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 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" | |
7436502b | 27 | #include "system.h" |
e4d6c7fc | 28 | #include "coretypes.h" |
4ee9c684 | 29 | #include "gfortran.h" |
4ee9c684 | 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 | { | |
4ee9c684 | 39 | memset (&new_st, '\0', sizeof (new_st)); |
40 | new_st.op = EXEC_NOP; | |
41 | } | |
42 | ||
43 | ||
f1ab83c6 | 44 | /* Get a gfc_code structure, initialized with the current locus |
45 | and a statement code 'op'. */ | |
4ee9c684 | 46 | |
47 | gfc_code * | |
f1ab83c6 | 48 | gfc_get_code (gfc_exec_op op) |
4ee9c684 | 49 | { |
50 | gfc_code *c; | |
51 | ||
48d8ad5a | 52 | c = XCNEW (gfc_code); |
f1ab83c6 | 53 | c->op = op; |
cbb9e6aa | 54 | c->loc = gfc_current_locus; |
4ee9c684 | 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 * | |
c1977dbe | 63 | gfc_append_code (gfc_code *tail, gfc_code *new_code) |
4ee9c684 | 64 | { |
4ee9c684 | 65 | if (tail != NULL) |
66 | { | |
67 | while (tail->next != NULL) | |
68 | tail = tail->next; | |
69 | ||
c1977dbe | 70 | tail->next = new_code; |
4ee9c684 | 71 | } |
72 | ||
c1977dbe | 73 | while (new_code->next != NULL) |
74 | new_code = new_code->next; | |
4ee9c684 | 75 | |
c1977dbe | 76 | return new_code; |
4ee9c684 | 77 | } |
78 | ||
79 | ||
80 | /* Free a single code structure, but not the actual structure itself. */ | |
81 | ||
82 | void | |
1bcc6eb8 | 83 | gfc_free_statement (gfc_code *p) |
4ee9c684 | 84 | { |
578d3f19 | 85 | if (p->expr1) |
86 | gfc_free_expr (p->expr1); | |
4ee9c684 | 87 | if (p->expr2) |
88 | gfc_free_expr (p->expr2); | |
89 | ||
90 | switch (p->op) | |
91 | { | |
92 | case EXEC_NOP: | |
8581350b | 93 | case EXEC_END_BLOCK: |
045b8fbb | 94 | case EXEC_END_NESTED_BLOCK: |
4ee9c684 | 95 | case EXEC_ASSIGN: |
b9cd8c56 | 96 | case EXEC_INIT_ASSIGN: |
4ee9c684 | 97 | case EXEC_GOTO: |
98 | case EXEC_CYCLE: | |
99 | case EXEC_RETURN: | |
9286e713 | 100 | case EXEC_END_PROCEDURE: |
4ee9c684 | 101 | case EXEC_IF: |
102 | case EXEC_PAUSE: | |
103 | case EXEC_STOP: | |
c6cd3066 | 104 | case EXEC_ERROR_STOP: |
4ee9c684 | 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: | |
1b716045 | 113 | case EXEC_ENTRY: |
4ee9c684 | 114 | case EXEC_ARITHMETIC_IF: |
c6cd3066 | 115 | case EXEC_CRITICAL: |
116 | case EXEC_SYNC_ALL: | |
117 | case EXEC_SYNC_IMAGES: | |
118 | case EXEC_SYNC_MEMORY: | |
3f73d66e | 119 | case EXEC_LOCK: |
120 | case EXEC_UNLOCK: | |
bd47f0bc | 121 | case EXEC_EVENT_POST: |
122 | case EXEC_EVENT_WAIT: | |
d9ca273e | 123 | case EXEC_FAIL_IMAGE: |
6d3cbc0c | 124 | case EXEC_CHANGE_TEAM: |
125 | case EXEC_END_TEAM: | |
126 | case EXEC_FORM_TEAM: | |
127 | case EXEC_SYNC_TEAM: | |
4ee9c684 | 128 | break; |
129 | ||
6a7084d7 | 130 | case EXEC_BLOCK: |
d18a512a | 131 | gfc_free_namespace (p->ext.block.ns); |
132 | gfc_free_association_list (p->ext.block.assoc); | |
6a7084d7 | 133 | break; |
134 | ||
930fe1de | 135 | case EXEC_COMPCALL: |
64e93293 | 136 | case EXEC_CALL_PPC: |
4ee9c684 | 137 | case EXEC_CALL: |
9960dc89 | 138 | case EXEC_ASSIGN_CALL: |
4ee9c684 | 139 | gfc_free_actual_arglist (p->ext.actual); |
140 | break; | |
141 | ||
142 | case EXEC_SELECT: | |
1de1b1a9 | 143 | case EXEC_SELECT_TYPE: |
030b7e6d | 144 | if (p->ext.block.case_list) |
145 | gfc_free_case_list (p->ext.block.case_list); | |
4ee9c684 | 146 | break; |
147 | ||
148 | case EXEC_DO: | |
149 | gfc_free_iterator (p->ext.iterator, 1); | |
150 | break; | |
151 | ||
152 | case EXEC_ALLOCATE: | |
153 | case EXEC_DEALLOCATE: | |
1de1b1a9 | 154 | gfc_free_alloc_list (p->ext.alloc.list); |
4ee9c684 | 155 | break; |
156 | ||
157 | case EXEC_OPEN: | |
158 | gfc_free_open (p->ext.open); | |
159 | break; | |
160 | ||
161 | case EXEC_CLOSE: | |
162 | gfc_free_close (p->ext.close); | |
163 | break; | |
164 | ||
165 | case EXEC_BACKSPACE: | |
166 | case EXEC_ENDFILE: | |
167 | case EXEC_REWIND: | |
6c306f90 | 168 | case EXEC_FLUSH: |
4ee9c684 | 169 | gfc_free_filepos (p->ext.filepos); |
170 | break; | |
171 | ||
172 | case EXEC_INQUIRE: | |
173 | gfc_free_inquire (p->ext.inquire); | |
174 | break; | |
175 | ||
ff6af856 | 176 | case EXEC_WAIT: |
177 | gfc_free_wait (p->ext.wait); | |
178 | break; | |
179 | ||
4ee9c684 | 180 | case EXEC_READ: |
181 | case EXEC_WRITE: | |
182 | gfc_free_dt (p->ext.dt); | |
183 | break; | |
184 | ||
185 | case EXEC_DT_END: | |
186 | /* The ext.dt member is a duplicate pointer and doesn't need to | |
1bcc6eb8 | 187 | be freed. */ |
4ee9c684 | 188 | break; |
189 | ||
55ea8666 | 190 | case EXEC_DO_CONCURRENT: |
4ee9c684 | 191 | case EXEC_FORALL: |
192 | gfc_free_forall_iterator (p->ext.forall_iterator); | |
193 | break; | |
194 | ||
01d728a4 | 195 | case EXEC_OACC_DECLARE: |
196 | if (p->ext.oacc_declare) | |
197 | gfc_free_oacc_declare_clauses (p->ext.oacc_declare); | |
198 | break; | |
199 | ||
ca4c3545 | 200 | case EXEC_OACC_PARALLEL_LOOP: |
201 | case EXEC_OACC_PARALLEL: | |
202 | case EXEC_OACC_KERNELS_LOOP: | |
203 | case EXEC_OACC_KERNELS: | |
204 | case EXEC_OACC_DATA: | |
205 | case EXEC_OACC_HOST_DATA: | |
206 | case EXEC_OACC_LOOP: | |
207 | case EXEC_OACC_UPDATE: | |
208 | case EXEC_OACC_WAIT: | |
209 | case EXEC_OACC_CACHE: | |
210 | case EXEC_OACC_ENTER_DATA: | |
211 | case EXEC_OACC_EXIT_DATA: | |
7c1a9598 | 212 | case EXEC_OACC_ROUTINE: |
15b28553 | 213 | case EXEC_OMP_CANCEL: |
214 | case EXEC_OMP_CANCELLATION_POINT: | |
44b49e6b | 215 | case EXEC_OMP_CRITICAL: |
691447ab | 216 | case EXEC_OMP_DISTRIBUTE: |
217 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO: | |
218 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD: | |
219 | case EXEC_OMP_DISTRIBUTE_SIMD: | |
764f1175 | 220 | case EXEC_OMP_DO: |
15b28553 | 221 | case EXEC_OMP_DO_SIMD: |
764f1175 | 222 | case EXEC_OMP_END_SINGLE: |
44b49e6b | 223 | case EXEC_OMP_ORDERED: |
764f1175 | 224 | case EXEC_OMP_PARALLEL: |
225 | case EXEC_OMP_PARALLEL_DO: | |
15b28553 | 226 | case EXEC_OMP_PARALLEL_DO_SIMD: |
764f1175 | 227 | case EXEC_OMP_PARALLEL_SECTIONS: |
44b49e6b | 228 | case EXEC_OMP_PARALLEL_WORKSHARE: |
764f1175 | 229 | case EXEC_OMP_SECTIONS: |
15b28553 | 230 | case EXEC_OMP_SIMD: |
764f1175 | 231 | case EXEC_OMP_SINGLE: |
691447ab | 232 | case EXEC_OMP_TARGET: |
233 | case EXEC_OMP_TARGET_DATA: | |
44b49e6b | 234 | case EXEC_OMP_TARGET_ENTER_DATA: |
235 | case EXEC_OMP_TARGET_EXIT_DATA: | |
236 | case EXEC_OMP_TARGET_PARALLEL: | |
237 | case EXEC_OMP_TARGET_PARALLEL_DO: | |
238 | case EXEC_OMP_TARGET_PARALLEL_DO_SIMD: | |
239 | case EXEC_OMP_TARGET_SIMD: | |
691447ab | 240 | case EXEC_OMP_TARGET_TEAMS: |
241 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE: | |
242 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
243 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
244 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD: | |
245 | case EXEC_OMP_TARGET_UPDATE: | |
fd6481cf | 246 | case EXEC_OMP_TASK: |
44b49e6b | 247 | case EXEC_OMP_TASKLOOP: |
248 | case EXEC_OMP_TASKLOOP_SIMD: | |
691447ab | 249 | case EXEC_OMP_TEAMS: |
250 | case EXEC_OMP_TEAMS_DISTRIBUTE: | |
251 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
252 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
253 | case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD: | |
764f1175 | 254 | case EXEC_OMP_WORKSHARE: |
764f1175 | 255 | gfc_free_omp_clauses (p->ext.omp_clauses); |
256 | break; | |
257 | ||
44b49e6b | 258 | case EXEC_OMP_END_CRITICAL: |
434f0922 | 259 | free (CONST_CAST (char *, p->ext.omp_name)); |
764f1175 | 260 | break; |
261 | ||
262 | case EXEC_OMP_FLUSH: | |
15b28553 | 263 | gfc_free_omp_namelist (p->ext.omp_namelist); |
764f1175 | 264 | break; |
265 | ||
9e10bfb7 | 266 | case EXEC_OACC_ATOMIC: |
764f1175 | 267 | case EXEC_OMP_ATOMIC: |
268 | case EXEC_OMP_BARRIER: | |
269 | case EXEC_OMP_MASTER: | |
764f1175 | 270 | case EXEC_OMP_END_NOWAIT: |
15b28553 | 271 | case EXEC_OMP_TASKGROUP: |
fd6481cf | 272 | case EXEC_OMP_TASKWAIT: |
2169f33b | 273 | case EXEC_OMP_TASKYIELD: |
764f1175 | 274 | break; |
275 | ||
4ee9c684 | 276 | default: |
277 | gfc_internal_error ("gfc_free_statement(): Bad statement"); | |
278 | } | |
279 | } | |
280 | ||
281 | ||
282 | /* Free a code statement and all other code structures linked to it. */ | |
283 | ||
284 | void | |
1bcc6eb8 | 285 | gfc_free_statements (gfc_code *p) |
4ee9c684 | 286 | { |
287 | gfc_code *q; | |
288 | ||
289 | for (; p; p = q) | |
290 | { | |
291 | q = p->next; | |
292 | ||
293 | if (p->block) | |
294 | gfc_free_statements (p->block); | |
295 | gfc_free_statement (p); | |
434f0922 | 296 | free (p); |
4ee9c684 | 297 | } |
298 | } | |
299 | ||
d18a512a | 300 | |
301 | /* Free an association list (of an ASSOCIATE statement). */ | |
302 | ||
303 | void | |
304 | gfc_free_association_list (gfc_association_list* assoc) | |
305 | { | |
306 | if (!assoc) | |
307 | return; | |
308 | ||
309 | gfc_free_association_list (assoc->next); | |
434f0922 | 310 | free (assoc); |
d18a512a | 311 | } |