2005-05-14 Jan Hubicka <jh@suse.cz>
+ Patch by Richard Henderson:
+ * tree-eh.c (tree_can_throw_internal, tree_can_throw_external):
+ Handle RESX expressions properly.
+
* tree-eh.c (record_stmt_eh_region): Use add_stmt_to_eh_region.
(add_stmt_to_eh_region_fn): Nest into CALL_EXPR.
(remove_stmt_from_eh_region_fn): Likewise.
bool
tree_can_throw_internal (tree stmt)
{
- int region_nr = lookup_stmt_eh_region (stmt);
+ int region_nr;
+
+ if (TREE_CODE (stmt) == RESX_EXPR)
+ region_nr = TREE_INT_CST_LOW (TREE_OPERAND (stmt, 0));
+ else
+ region_nr = lookup_stmt_eh_region (stmt);
if (region_nr < 0)
return false;
return can_throw_internal_1 (region_nr);
bool
tree_can_throw_external (tree stmt)
{
- int region_nr = lookup_stmt_eh_region (stmt);
+ int region_nr;
+
+ if (TREE_CODE (stmt) == RESX_EXPR)
+ region_nr = TREE_INT_CST_LOW (TREE_OPERAND (stmt, 0));
+ else
+ region_nr = lookup_stmt_eh_region (stmt);
if (region_nr < 0)
- return false;
- return can_throw_external_1 (region_nr);
+ return tree_could_throw_p (stmt);
+ else
+ return can_throw_external_1 (region_nr);
}
bool