1 /* Build executable statement trees.
2 Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by Andy Vaught
6 This file is part of GCC.
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
10 Software Foundation; either version 3, or (at your option) any later
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
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
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
34 /* Zeroes out the new_st structure. */
37 gfc_clear_new_st (void)
39 memset (&new_st, '\0', sizeof (new_st));
44 /* Get a gfc_code structure. */
52 c->loc = gfc_current_locus;
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. */
61 gfc_append_code (gfc_code *tail, gfc_code *new_code)
65 while (tail->next != NULL)
68 tail->next = new_code;
71 while (new_code->next != NULL)
72 new_code = new_code->next;
78 /* Free a single code structure, but not the actual structure itself. */
81 gfc_free_statement (gfc_code *p)
84 gfc_free_expr (p->expr);
86 gfc_free_expr (p->expr2);
92 case EXEC_INIT_ASSIGN:
102 case EXEC_POINTER_ASSIGN:
106 case EXEC_LABEL_ASSIGN:
108 case EXEC_ARITHMETIC_IF:
112 gfc_free_expr (p->expr);
114 case EXEC_ASSIGN_CALL:
115 gfc_free_actual_arglist (p->ext.actual);
119 if (p->ext.case_list)
120 gfc_free_case_list (p->ext.case_list);
124 gfc_free_iterator (p->ext.iterator, 1);
128 case EXEC_DEALLOCATE:
129 gfc_free_alloc_list (p->ext.alloc_list);
133 gfc_free_open (p->ext.open);
137 gfc_free_close (p->ext.close);
144 gfc_free_filepos (p->ext.filepos);
148 gfc_free_inquire (p->ext.inquire);
152 gfc_free_wait (p->ext.wait);
157 gfc_free_dt (p->ext.dt);
161 /* The ext.dt member is a duplicate pointer and doesn't need to
166 gfc_free_forall_iterator (p->ext.forall_iterator);
170 case EXEC_OMP_END_SINGLE:
171 case EXEC_OMP_PARALLEL:
172 case EXEC_OMP_PARALLEL_DO:
173 case EXEC_OMP_PARALLEL_SECTIONS:
174 case EXEC_OMP_SECTIONS:
175 case EXEC_OMP_SINGLE:
177 case EXEC_OMP_WORKSHARE:
178 case EXEC_OMP_PARALLEL_WORKSHARE:
179 gfc_free_omp_clauses (p->ext.omp_clauses);
182 case EXEC_OMP_CRITICAL:
183 gfc_free (CONST_CAST (char *, p->ext.omp_name));
187 gfc_free_namelist (p->ext.omp_namelist);
190 case EXEC_OMP_ATOMIC:
191 case EXEC_OMP_BARRIER:
192 case EXEC_OMP_MASTER:
193 case EXEC_OMP_ORDERED:
194 case EXEC_OMP_END_NOWAIT:
195 case EXEC_OMP_TASKWAIT:
199 gfc_internal_error ("gfc_free_statement(): Bad statement");
204 /* Free a code statement and all other code structures linked to it. */
207 gfc_free_statements (gfc_code *p)
216 gfc_free_statements (p->block);
217 gfc_free_statement (p);