diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index da2fb72bec45a..e54eaa3b81bec 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -4598,6 +4598,14 @@ void SelectionDAG::Legalize() { AssignTopologicalOrder(); SmallPtrSet<SDNode *, 16> LegalizedNodes; + // Use a delete listener to remove nodes which were deleted during + // legalization from LegalizeNodes. This is needed to handle the situation + // where a new node is allocated by the object pool to the same address of a + // previously deleted node. + DAGNodeDeletedListener DeleteListener( + *this, + [&LegalizedNodes](SDNode *N, SDNode *E) { LegalizedNodes.erase(N); }); + SelectionDAGLegalize Legalizer(*this, LegalizedNodes); // Visit all the nodes. We start in topological order, so that we see |