Add hashing and DenseMapInfo for ArrayRef

[oota-llvm.git] / include / llvm / ADT / TinyPtrVector.h

diff --git a/include/llvm/ADT/TinyPtrVector.h b/include/llvm/ADT/TinyPtrVector.h
index bb31540c508b80372f629ae7c3bae8930af75392..487aa46cf64205b4b06b7b8b2b0c14fc69d56328 100644 (file)
--- a/include/llvm/ADT/TinyPtrVector.h
+++ b/include/llvm/ADT/TinyPtrVector.h
@@ -15,7 +15,7 @@
 #include "llvm/ADT/SmallVector.h"
 
 namespace llvm {
-  
+
 /// TinyPtrVector - This class is specialized for cases where there are
 /// normally 0 or 1 element in a vector, but is general enough to go beyond that
 /// when required.
@@ -116,6 +116,15 @@ public:
     return *Val.template get<VecTy*>();
   }
 
+  // implicit conversion operator to MutableArrayRef.
+  operator MutableArrayRef<EltTy>() {
+    if (Val.isNull())
+      return None;
+    if (Val.template is<EltTy>())
+      return *Val.getAddrOfPtr1();
+    return *Val.template get<VecTy*>();
+  }
+
   bool empty() const {
     // This vector can be empty if it contains no element, or if it
     // contains a pointer to an empty vector.
@@ -141,7 +150,6 @@ public:
       return Val.getAddrOfPtr1();
 
     return Val.template get<VecTy *>()->begin();
-
   }
   iterator end() {
     if (Val.template is<EltTy>())