/* Routines for performing Temporary Expression Replacement (TER) in SSA trees.
- Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
Contributed by Andrew MacLeod <amacleod@redhat.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
if (TREE_CODE (stmt) != GIMPLE_MODIFY_STMT)
return false;
+ /* If the statement may throw an exception, it cannot be replaced. */
+ if (tree_could_throw_p (stmt))
+ return false;
+
/* Punt if there is more than 1 def. */
def = SINGLE_SSA_TREE_OPERAND (stmt, SSA_OP_DEF);
if (!def)
}
-/* Create an expression entry fora replaceable expression. */
+/* Create an expression entry for a replaceable expression. */
static void
process_replaceable (temp_expr_table_p tab, tree stmt)