1 /* Build executable statement trees.
2 Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006
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 2, 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 COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 /* Executable statements are strung together into a singly linked list
24 of code structures. These structures are later translated into GCC
25 GENERIC tree structures and from there to executable code for a
35 /* Zeroes out the new_st structure. */
38 gfc_clear_new_st (void)
41 memset (&new_st, '\0', sizeof (new_st));
46 /* Get a gfc_code structure. */
53 c = gfc_getmem (sizeof (gfc_code));
54 c->loc = gfc_current_locus;
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. */
63 gfc_append_code (gfc_code * tail, gfc_code * new)
68 while (tail->next != NULL)
74 while (new->next != NULL)
81 /* Free a single code structure, but not the actual structure itself. */
84 gfc_free_statement (gfc_code * p)
88 gfc_free_expr (p->expr);
90 gfc_free_expr (p->expr2);
105 case EXEC_POINTER_ASSIGN:
109 case EXEC_LABEL_ASSIGN:
111 case EXEC_ARITHMETIC_IF:
115 case EXEC_ASSIGN_CALL:
116 gfc_free_actual_arglist (p->ext.actual);
120 if (p->ext.case_list)
121 gfc_free_case_list (p->ext.case_list);
125 gfc_free_iterator (p->ext.iterator, 1);
129 case EXEC_DEALLOCATE:
130 gfc_free_alloc_list (p->ext.alloc_list);
134 gfc_free_open (p->ext.open);
138 gfc_free_close (p->ext.close);
145 gfc_free_filepos (p->ext.filepos);
149 gfc_free_inquire (p->ext.inquire);
154 gfc_free_dt (p->ext.dt);
158 /* The ext.dt member is a duplicate pointer and doesn't need to
163 gfc_free_forall_iterator (p->ext.forall_iterator);
167 case EXEC_OMP_END_SINGLE:
168 case EXEC_OMP_PARALLEL:
169 case EXEC_OMP_PARALLEL_DO:
170 case EXEC_OMP_PARALLEL_SECTIONS:
171 case EXEC_OMP_SECTIONS:
172 case EXEC_OMP_SINGLE:
173 case EXEC_OMP_WORKSHARE:
174 case EXEC_OMP_PARALLEL_WORKSHARE:
175 gfc_free_omp_clauses (p->ext.omp_clauses);
178 case EXEC_OMP_CRITICAL:
179 gfc_free ((char *) p->ext.omp_name);
183 gfc_free_namelist (p->ext.omp_namelist);
186 case EXEC_OMP_ATOMIC:
187 case EXEC_OMP_BARRIER:
188 case EXEC_OMP_MASTER:
189 case EXEC_OMP_ORDERED:
190 case EXEC_OMP_END_NOWAIT:
194 gfc_internal_error ("gfc_free_statement(): Bad statement");
199 /* Free a code statement and all other code structures linked to it. */
202 gfc_free_statements (gfc_code * p)
211 gfc_free_statements (p->block);
212 gfc_free_statement (p);