1 /* Build executable statement trees.
2 Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009
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->expr1);
86 gfc_free_expr (p->expr2);
93 case EXEC_INIT_ASSIGN:
97 case EXEC_END_PROCEDURE:
104 case EXEC_POINTER_ASSIGN:
108 case EXEC_LABEL_ASSIGN:
110 case EXEC_ARITHMETIC_IF:
114 gfc_free_namespace (p->ext.ns);
120 case EXEC_ASSIGN_CALL:
121 gfc_free_actual_arglist (p->ext.actual);
125 case EXEC_SELECT_TYPE:
126 if (p->ext.case_list)
127 gfc_free_case_list (p->ext.case_list);
131 gfc_free_iterator (p->ext.iterator, 1);
135 case EXEC_DEALLOCATE:
136 gfc_free_alloc_list (p->ext.alloc.list);
140 gfc_free_open (p->ext.open);
144 gfc_free_close (p->ext.close);
151 gfc_free_filepos (p->ext.filepos);
155 gfc_free_inquire (p->ext.inquire);
159 gfc_free_wait (p->ext.wait);
164 gfc_free_dt (p->ext.dt);
168 /* The ext.dt member is a duplicate pointer and doesn't need to
173 gfc_free_forall_iterator (p->ext.forall_iterator);
177 case EXEC_OMP_END_SINGLE:
178 case EXEC_OMP_PARALLEL:
179 case EXEC_OMP_PARALLEL_DO:
180 case EXEC_OMP_PARALLEL_SECTIONS:
181 case EXEC_OMP_SECTIONS:
182 case EXEC_OMP_SINGLE:
184 case EXEC_OMP_WORKSHARE:
185 case EXEC_OMP_PARALLEL_WORKSHARE:
186 gfc_free_omp_clauses (p->ext.omp_clauses);
189 case EXEC_OMP_CRITICAL:
190 gfc_free (CONST_CAST (char *, p->ext.omp_name));
194 gfc_free_namelist (p->ext.omp_namelist);
197 case EXEC_OMP_ATOMIC:
198 case EXEC_OMP_BARRIER:
199 case EXEC_OMP_MASTER:
200 case EXEC_OMP_ORDERED:
201 case EXEC_OMP_END_NOWAIT:
202 case EXEC_OMP_TASKWAIT:
206 gfc_internal_error ("gfc_free_statement(): Bad statement");
211 /* Free a code statement and all other code structures linked to it. */
214 gfc_free_statements (gfc_code *p)
223 gfc_free_statements (p->block);
224 gfc_free_statement (p);