diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 9ef4f508ef1..b6023d52d6e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -7444,6 +7444,9 @@ SDValue DAGCombiner::visitSELECT(SDNode *N) { if (normalizeToSequence || !InnerSelect.use_empty()) return DAG.getNode(ISD::SELECT, DL, N1.getValueType(), Cond0, InnerSelect, N2); + // Cleanup on failure. + if (InnerSelect.use_empty()) + recursivelyDeleteUnusedNodes(InnerSelect.getNode()); } // select (or Cond0, Cond1), X, Y -> select Cond0, X, (select Cond1, X, Y) if (N0->getOpcode() == ISD::OR && N0->hasOneUse()) { @@ -7454,6 +7457,9 @@ SDValue DAGCombiner::visitSELECT(SDNode *N) { if (normalizeToSequence || !InnerSelect.use_empty()) return DAG.getNode(ISD::SELECT, DL, N1.getValueType(), Cond0, N1, InnerSelect); + // Cleanup on failure. + if (InnerSelect.use_empty()) + recursivelyDeleteUnusedNodes(InnerSelect.getNode()); } // select Cond0, (select Cond1, X, Y), Y -> select (and Cond0, Cond1), X, Y |
