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
:
175 case EXEC_OMP_WORKSHARE
:
176 case EXEC_OMP_PARALLEL_WORKSHARE
:
177 gfc_free_omp_clauses (p
->ext
.omp_clauses
);
180 case EXEC_OMP_CRITICAL
:
181 gfc_free (CONST_CAST (char *, p
->ext
.omp_name
));
185 gfc_free_namelist (p
->ext
.omp_namelist
);
188 case EXEC_OMP_ATOMIC
:
189 case EXEC_OMP_BARRIER
:
190 case EXEC_OMP_MASTER
:
191 case EXEC_OMP_ORDERED
:
192 case EXEC_OMP_END_NOWAIT
:
193 case EXEC_OMP_TASKWAIT
:
197 gfc_internal_error ("gfc_free_statement(): Bad statement");
202 /* Free a code statement and all other code structures linked to it. */
205 gfc_free_statements (gfc_code
*p
)
214 gfc_free_statements (p
->block
);
215 gfc_free_statement (p
);