diff options
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index 59e2fef..479b46f 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -1,5 +1,5 @@ /* Induction variable optimizations. - Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. This file is part of GCC. @@ -1102,6 +1102,12 @@ find_givs_in_stmt_scev (struct ivopts_data *data, gimple stmt, affine_iv *iv) || contains_abnormal_ssa_name_p (iv->step)) return false; + /* If STMT could throw, then do not consider STMT as defining a GIV. + While this will suppress optimizations, we can not safely delete this + GIV and associated statements, even if it appears it is not used. */ + if (stmt_could_throw_p (stmt)) + return false; + return true; } |