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-rw-r--r--include/llvm/CodeGen/SelectionDAGNodes.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index 950fd322da..79dbd73e97 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -2397,6 +2397,11 @@ public:
SDNodeIterator operator++(int) { // Postincrement
SDNodeIterator tmp = *this; ++*this; return tmp;
}
+ size_t operator-(SDNodeIterator Other) const {
+ assert(Node == Other.Node &&
+ "Cannot compare iterators of two different nodes!");
+ return Operand - Other.Operand;
+ }
static SDNodeIterator begin(SDNode *N) { return SDNodeIterator(N, 0); }
static SDNodeIterator end (SDNode *N) {