diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 69a7a9789a..549527c1a3 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1684,6 +1684,9 @@ SDValue DAGCombiner::SimplifyBinOpWithSameOpcodeHands(SDNode *N) { EVT VT = N0.getValueType(); assert(N0.getOpcode() == N1.getOpcode() && "Bad input!"); + // Bail early if none of these transforms apply. + if (N0.getNode()->getNumOperands() == 0) return SDValue(); + // For each of OP in AND/OR/XOR: // fold (OP (zext x), (zext y)) -> (zext (OP x, y)) // fold (OP (sext x), (sext y)) -> (sext (OP x, y)) |