diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a112e17..acc2bcb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-05-18 Jeff Law <law@redhat.com> + + * tree-ssa-forwprop.c (forward_propagate_addr_expr): Do not + propagate an ADDR_EXPR if the definition and use sites are + in different EH regions. + 2005-05-18 Ian Lance Taylor <ian@airs.com> * read-rtl.c (mode_attr_index): Use obstack_grow0, not diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index fb3dcaf..f65df57 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -537,6 +537,11 @@ forward_propagate_addr_expr (tree stmt) if (bb_for_stmt (use_stmt)->loop_depth > stmt_loop_depth) return false; + /* If the two statements belong to different EH regions, then there + is nothing we can or should try to do. */ + if (lookup_stmt_eh_region (use_stmt) != lookup_stmt_eh_region (stmt)) + return false; + /* Strip away any outer COMPONENT_REF/ARRAY_REF nodes from the LHS. */ lhs = TREE_OPERAND (use_stmt, 0); while (TREE_CODE (lhs) == COMPONENT_REF || TREE_CODE (lhs) == ARRAY_REF) |