1 /* Build executable statement trees.
2 Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007
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)
40 memset (&new_st, '\0', sizeof (new_st));
45 /* Get a gfc_code structure. */
52 c = gfc_getmem (sizeof (gfc_code));
53 c->loc = gfc_current_locus;
58 /* Given some part of a gfc_code structure, append a set of code to
59 its tail, returning a pointer to the new tail. */
62 gfc_append_code (gfc_code *tail, gfc_code *new)
66 while (tail->next != NULL)
72 while (new->next != NULL)
79 /* Free a single code structure, but not the actual structure itself. */
82 gfc_free_statement (gfc_code *p)
85 gfc_free_expr (p->expr);
87 gfc_free_expr (p->expr2);
93 case EXEC_INIT_ASSIGN:
103 case EXEC_POINTER_ASSIGN:
107 case EXEC_LABEL_ASSIGN:
109 case EXEC_ARITHMETIC_IF:
113 case EXEC_ASSIGN_CALL:
114 gfc_free_actual_arglist (p->ext.actual);
118 if (p->ext.case_list)
119 gfc_free_case_list (p->ext.case_list);
123 gfc_free_iterator (p->ext.iterator, 1);
127 case EXEC_DEALLOCATE:
128 gfc_free_alloc_list (p->ext.alloc_list);
132 gfc_free_open (p->ext.open);
136 gfc_free_close (p->ext.close);
143 gfc_free_filepos (p->ext.filepos);
147 gfc_free_inquire (p->ext.inquire);
152 gfc_free_dt (p->ext.dt);
156 /* The ext.dt member is a duplicate pointer and doesn't need to
161 gfc_free_forall_iterator (p->ext.forall_iterator);
165 case EXEC_OMP_END_SINGLE:
166 case EXEC_OMP_PARALLEL:
167 case EXEC_OMP_PARALLEL_DO:
168 case EXEC_OMP_PARALLEL_SECTIONS:
169 case EXEC_OMP_SECTIONS:
170 case EXEC_OMP_SINGLE:
171 case EXEC_OMP_WORKSHARE:
172 case EXEC_OMP_PARALLEL_WORKSHARE:
173 gfc_free_omp_clauses (p->ext.omp_clauses);
176 case EXEC_OMP_CRITICAL:
177 gfc_free ((char *) p->ext.omp_name);
181 gfc_free_namelist (p->ext.omp_namelist);
184 case EXEC_OMP_ATOMIC:
185 case EXEC_OMP_BARRIER:
186 case EXEC_OMP_MASTER:
187 case EXEC_OMP_ORDERED:
188 case EXEC_OMP_END_NOWAIT:
192 gfc_internal_error ("gfc_free_statement(): Bad statement");
197 /* Free a code statement and all other code structures linked to it. */
200 gfc_free_statements (gfc_code *p)
209 gfc_free_statements (p->block);
210 gfc_free_statement (p);