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-rw-r--r--lib/CodeGen/SelectionDAG/DAGCombiner.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 6ce29fb89f..fc393e9ef2 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -607,8 +607,9 @@ void DAGCombiner::Run(bool RunningAfterLegalize) {
AddToWorkList(RV.Val);
AddUsersToWorkList(RV.Val);
- // Add any uses of the old node to the worklist if they have a single
- // use. They may be dead after this node is deleted.
+ // Add any uses of the old node to the worklist in case this node is the
+ // last one that uses them. They may become dead after this node is
+ // deleted.
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
AddToWorkList(N->getOperand(i).Val);