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. */
51 c = gfc_getmem (sizeof (gfc_code));
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)
65 while (tail->next != NULL)
71 while (new->next != NULL)
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 case EXEC_ASSIGN_CALL:
113 gfc_free_actual_arglist (p->ext.actual);
117 if (p->ext.case_list)
118 gfc_free_case_list (p->ext.case_list);
122 gfc_free_iterator (p->ext.iterator, 1);
126 case EXEC_DEALLOCATE:
127 gfc_free_alloc_list (p->ext.alloc_list);
131 gfc_free_open (p->ext.open);
135 gfc_free_close (p->ext.close);
142 gfc_free_filepos (p->ext.filepos);
146 gfc_free_inquire (p->ext.inquire);
150 gfc_free_wait (p->ext.wait);
155 gfc_free_dt (p->ext.dt);
159 /* The ext.dt member is a duplicate pointer and doesn't need to
164 gfc_free_forall_iterator (p->ext.forall_iterator);
168 case EXEC_OMP_END_SINGLE:
169 case EXEC_OMP_PARALLEL:
170 case EXEC_OMP_PARALLEL_DO:
171 case EXEC_OMP_PARALLEL_SECTIONS:
172 case EXEC_OMP_SECTIONS:
173 case EXEC_OMP_SINGLE:
174 case EXEC_OMP_WORKSHARE:
175 case EXEC_OMP_PARALLEL_WORKSHARE:
176 gfc_free_omp_clauses (p->ext.omp_clauses);
179 case EXEC_OMP_CRITICAL:
180 gfc_free (CONST_CAST (char *, p->ext.omp_name));
184 gfc_free_namelist (p->ext.omp_namelist);
187 case EXEC_OMP_ATOMIC:
188 case EXEC_OMP_BARRIER:
189 case EXEC_OMP_MASTER:
190 case EXEC_OMP_ORDERED:
191 case EXEC_OMP_END_NOWAIT:
195 gfc_internal_error ("gfc_free_statement(): Bad statement");
200 /* Free a code statement and all other code structures linked to it. */
203 gfc_free_statements (gfc_code *p)
212 gfc_free_statements (p->block);
213 gfc_free_statement (p);