X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=include%2Fllvm%2FADT%2FOptional.h;h=d9acaf6d23b00d8d729db9ccbce596e436e9b647;hp=855ab890392ee26e103e36f7aee3b469c15c7176;hb=116832190dc04f511dacff847742733cc957d46a;hpb=3c8ad803340edbbcf39cc4a40e5163ad0b71cb25

diff --git a/include/llvm/ADT/Optional.h b/include/llvm/ADT/Optional.h
index 855ab890392..d9acaf6d23b 100644
--- a/include/llvm/ADT/Optional.h
+++ b/include/llvm/ADT/Optional.h
@@ -159,6 +159,25 @@ template <typename T> struct isPodLike<Optional<T> > {
 template<typename T, typename U>
 void operator==(const Optional<T> &X, const Optional<U> &Y);
 
+template<typename T>
+bool operator==(const Optional<T> &X, NoneType) {
+  return !X.hasValue();
+}
+
+template<typename T>
+bool operator==(NoneType, const Optional<T> &X) {
+  return X == None;
+}
+
+template<typename T>
+bool operator!=(const Optional<T> &X, NoneType) {
+  return !(X == None);
+}
+
+template<typename T>
+bool operator!=(NoneType, const Optional<T> &X) {
+  return X != None;
+}
 /// \brief Poison comparison between two \c Optional objects. Clients needs to
 /// explicitly compare the underlying values and account for empty \c Optional
 /// objects.