diff options
Diffstat (limited to 'gcc/tree-ssa-pre.cc')
| -rw-r--r-- | gcc/tree-ssa-pre.cc | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/gcc/tree-ssa-pre.cc b/gcc/tree-ssa-pre.cc index f6c531e..9933173 100644 --- a/gcc/tree-ssa-pre.cc +++ b/gcc/tree-ssa-pre.cc @@ -2773,16 +2773,17 @@ find_or_generate_expression (basic_block block, tree op, gimple_seq *stmts) bitmap exprset = value_expressions[lookfor]; bitmap_iterator bi; unsigned int i; - EXECUTE_IF_SET_IN_BITMAP (exprset, 0, i, bi) - { - pre_expr temp = expression_for_id (i); - /* We cannot insert random REFERENCE expressions at arbitrary - places. We can insert NARYs which eventually re-materializes - its operand values. */ - if (temp->kind == NARY) - return create_expression_by_pieces (block, temp, stmts, - TREE_TYPE (op)); - } + if (exprset) + EXECUTE_IF_SET_IN_BITMAP (exprset, 0, i, bi) + { + pre_expr temp = expression_for_id (i); + /* We cannot insert random REFERENCE expressions at arbitrary + places. We can insert NARYs which eventually re-materializes + its operand values. */ + if (temp->kind == NARY) + return create_expression_by_pieces (block, temp, stmts, + TREE_TYPE (op)); + } /* Defer. */ return NULL_TREE; |