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-rw-r--r--include/llvm/ADT/PointerUnion.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/ADT/PointerUnion.h b/include/llvm/ADT/PointerUnion.h
index 4276859e9254..315e58336cba 100644
--- a/include/llvm/ADT/PointerUnion.h
+++ b/include/llvm/ADT/PointerUnion.h
@@ -346,6 +346,12 @@ struct PointerLikeTypeTraits<PointerUnion3<PT1, PT2, PT3>> {
};
};
+template <typename PT1, typename PT2, typename PT3>
+bool operator<(PointerUnion3<PT1, PT2, PT3> lhs,
+ PointerUnion3<PT1, PT2, PT3> rhs) {
+ return lhs.getOpaqueValue() < rhs.getOpaqueValue();
+}
+
/// A pointer union of four pointer types. See documentation for PointerUnion
/// for usage.
template <typename PT1, typename PT2, typename PT3, typename PT4>