]>
Commit | Line | Data |
---|---|---|
6de9cd9a | 1 | /* Build executable statement trees. |
d0a4a61c | 2 | Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
6c7a4dfd | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a DN |
21 | |
22 | /* Executable statements are strung together into a singly linked list | |
23 | of code structures. These structures are later translated into GCC | |
24 | GENERIC tree structures and from there to executable code for a | |
25 | target. */ | |
26 | ||
27 | #include "config.h" | |
d22e4895 | 28 | #include "system.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 | ||
44 | /* Get a gfc_code structure. */ | |
45 | ||
46 | gfc_code * | |
47 | gfc_get_code (void) | |
48 | { | |
49 | gfc_code *c; | |
50 | ||
ece3f663 | 51 | c = XCNEW (gfc_code); |
63645982 | 52 | c->loc = gfc_current_locus; |
6de9cd9a DN |
53 | return c; |
54 | } | |
55 | ||
56 | ||
57 | /* Given some part of a gfc_code structure, append a set of code to | |
58 | its tail, returning a pointer to the new tail. */ | |
59 | ||
60 | gfc_code * | |
7b901ac4 | 61 | gfc_append_code (gfc_code *tail, gfc_code *new_code) |
6de9cd9a | 62 | { |
6de9cd9a DN |
63 | if (tail != NULL) |
64 | { | |
65 | while (tail->next != NULL) | |
66 | tail = tail->next; | |
67 | ||
7b901ac4 | 68 | tail->next = new_code; |
6de9cd9a DN |
69 | } |
70 | ||
7b901ac4 KG |
71 | while (new_code->next != NULL) |
72 | new_code = new_code->next; | |
6de9cd9a | 73 | |
7b901ac4 | 74 | return new_code; |
6de9cd9a DN |
75 | } |
76 | ||
77 | ||
78 | /* Free a single code structure, but not the actual structure itself. */ | |
79 | ||
80 | void | |
edf1eac2 | 81 | gfc_free_statement (gfc_code *p) |
6de9cd9a | 82 | { |
a513927a SK |
83 | if (p->expr1) |
84 | gfc_free_expr (p->expr1); | |
6de9cd9a DN |
85 | if (p->expr2) |
86 | gfc_free_expr (p->expr2); | |
87 | ||
88 | switch (p->op) | |
89 | { | |
90 | case EXEC_NOP: | |
d80c695f | 91 | case EXEC_END_BLOCK: |
6de9cd9a | 92 | case EXEC_ASSIGN: |
6b591ec0 | 93 | case EXEC_INIT_ASSIGN: |
6de9cd9a DN |
94 | case EXEC_GOTO: |
95 | case EXEC_CYCLE: | |
96 | case EXEC_RETURN: | |
5c71a5e0 | 97 | case EXEC_END_PROCEDURE: |
6de9cd9a DN |
98 | case EXEC_IF: |
99 | case EXEC_PAUSE: | |
100 | case EXEC_STOP: | |
d0a4a61c | 101 | case EXEC_ERROR_STOP: |
6de9cd9a DN |
102 | case EXEC_EXIT: |
103 | case EXEC_WHERE: | |
104 | case EXEC_IOLENGTH: | |
105 | case EXEC_POINTER_ASSIGN: | |
106 | case EXEC_DO_WHILE: | |
107 | case EXEC_CONTINUE: | |
108 | case EXEC_TRANSFER: | |
109 | case EXEC_LABEL_ASSIGN: | |
3d79abbd | 110 | case EXEC_ENTRY: |
6de9cd9a | 111 | case EXEC_ARITHMETIC_IF: |
d0a4a61c TB |
112 | case EXEC_CRITICAL: |
113 | case EXEC_SYNC_ALL: | |
114 | case EXEC_SYNC_IMAGES: | |
115 | case EXEC_SYNC_MEMORY: | |
6de9cd9a DN |
116 | break; |
117 | ||
9abe5e56 | 118 | case EXEC_BLOCK: |
03af1e4c DK |
119 | gfc_free_namespace (p->ext.block.ns); |
120 | gfc_free_association_list (p->ext.block.assoc); | |
9abe5e56 DK |
121 | break; |
122 | ||
8e1f752a | 123 | case EXEC_COMPCALL: |
713485cc | 124 | case EXEC_CALL_PPC: |
6de9cd9a | 125 | case EXEC_CALL: |
476220e7 | 126 | case EXEC_ASSIGN_CALL: |
6de9cd9a DN |
127 | gfc_free_actual_arglist (p->ext.actual); |
128 | break; | |
129 | ||
130 | case EXEC_SELECT: | |
cf2b3c22 | 131 | case EXEC_SELECT_TYPE: |
6de9cd9a DN |
132 | if (p->ext.case_list) |
133 | gfc_free_case_list (p->ext.case_list); | |
134 | break; | |
135 | ||
136 | case EXEC_DO: | |
137 | gfc_free_iterator (p->ext.iterator, 1); | |
138 | break; | |
139 | ||
140 | case EXEC_ALLOCATE: | |
141 | case EXEC_DEALLOCATE: | |
cf2b3c22 | 142 | gfc_free_alloc_list (p->ext.alloc.list); |
6de9cd9a DN |
143 | break; |
144 | ||
145 | case EXEC_OPEN: | |
146 | gfc_free_open (p->ext.open); | |
147 | break; | |
148 | ||
149 | case EXEC_CLOSE: | |
150 | gfc_free_close (p->ext.close); | |
151 | break; | |
152 | ||
153 | case EXEC_BACKSPACE: | |
154 | case EXEC_ENDFILE: | |
155 | case EXEC_REWIND: | |
6403ec5f | 156 | case EXEC_FLUSH: |
6de9cd9a DN |
157 | gfc_free_filepos (p->ext.filepos); |
158 | break; | |
159 | ||
160 | case EXEC_INQUIRE: | |
161 | gfc_free_inquire (p->ext.inquire); | |
162 | break; | |
163 | ||
6f0f0b2e JD |
164 | case EXEC_WAIT: |
165 | gfc_free_wait (p->ext.wait); | |
166 | break; | |
167 | ||
6de9cd9a DN |
168 | case EXEC_READ: |
169 | case EXEC_WRITE: | |
170 | gfc_free_dt (p->ext.dt); | |
171 | break; | |
172 | ||
173 | case EXEC_DT_END: | |
174 | /* The ext.dt member is a duplicate pointer and doesn't need to | |
edf1eac2 | 175 | be freed. */ |
6de9cd9a DN |
176 | break; |
177 | ||
178 | case EXEC_FORALL: | |
179 | gfc_free_forall_iterator (p->ext.forall_iterator); | |
180 | break; | |
181 | ||
6c7a4dfd JJ |
182 | case EXEC_OMP_DO: |
183 | case EXEC_OMP_END_SINGLE: | |
184 | case EXEC_OMP_PARALLEL: | |
185 | case EXEC_OMP_PARALLEL_DO: | |
186 | case EXEC_OMP_PARALLEL_SECTIONS: | |
187 | case EXEC_OMP_SECTIONS: | |
188 | case EXEC_OMP_SINGLE: | |
a68ab351 | 189 | case EXEC_OMP_TASK: |
6c7a4dfd JJ |
190 | case EXEC_OMP_WORKSHARE: |
191 | case EXEC_OMP_PARALLEL_WORKSHARE: | |
192 | gfc_free_omp_clauses (p->ext.omp_clauses); | |
193 | break; | |
194 | ||
195 | case EXEC_OMP_CRITICAL: | |
b1d5455a | 196 | gfc_free (CONST_CAST (char *, p->ext.omp_name)); |
6c7a4dfd JJ |
197 | break; |
198 | ||
199 | case EXEC_OMP_FLUSH: | |
200 | gfc_free_namelist (p->ext.omp_namelist); | |
201 | break; | |
202 | ||
203 | case EXEC_OMP_ATOMIC: | |
204 | case EXEC_OMP_BARRIER: | |
205 | case EXEC_OMP_MASTER: | |
206 | case EXEC_OMP_ORDERED: | |
207 | case EXEC_OMP_END_NOWAIT: | |
a68ab351 | 208 | case EXEC_OMP_TASKWAIT: |
6c7a4dfd JJ |
209 | break; |
210 | ||
6de9cd9a DN |
211 | default: |
212 | gfc_internal_error ("gfc_free_statement(): Bad statement"); | |
213 | } | |
214 | } | |
215 | ||
216 | ||
217 | /* Free a code statement and all other code structures linked to it. */ | |
218 | ||
219 | void | |
edf1eac2 | 220 | gfc_free_statements (gfc_code *p) |
6de9cd9a DN |
221 | { |
222 | gfc_code *q; | |
223 | ||
224 | for (; p; p = q) | |
225 | { | |
226 | q = p->next; | |
227 | ||
228 | if (p->block) | |
229 | gfc_free_statements (p->block); | |
230 | gfc_free_statement (p); | |
231 | gfc_free (p); | |
232 | } | |
233 | } | |
234 | ||
03af1e4c DK |
235 | |
236 | /* Free an association list (of an ASSOCIATE statement). */ | |
237 | ||
238 | void | |
239 | gfc_free_association_list (gfc_association_list* assoc) | |
240 | { | |
241 | if (!assoc) | |
242 | return; | |
243 | ||
244 | gfc_free_association_list (assoc->next); | |
245 | gfc_free (assoc); | |
246 | } |