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Diffstat (limited to 'gcc/tree-ssa-sccvn.cc')
| -rw-r--r-- | gcc/tree-ssa-sccvn.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/tree-ssa-sccvn.cc b/gcc/tree-ssa-sccvn.cc index 09f92b2..0c519cf 100644 --- a/gcc/tree-ssa-sccvn.cc +++ b/gcc/tree-ssa-sccvn.cc @@ -2527,7 +2527,10 @@ vn_nary_build_or_lookup_1 (gimple_match_op *res_op, bool insert, else { tree val = vn_lookup_simplify_result (res_op); - if (!val && insert) + /* ??? In weird cases we can end up with internal-fn calls, + but this isn't expected so throw the result away. See + PR123040 for an example. */ + if (!val && insert && res_op->code.is_tree_code ()) { gimple_seq stmts = NULL; result = maybe_push_res_to_seq (res_op, &stmts); |