diff --git a/include/llvm/ADT/PointerUnion.h b/include/llvm/ADT/PointerUnion.h
index b3baec1ff37..1b36aeea793 100644
--- a/include/llvm/ADT/PointerUnion.h
+++ b/include/llvm/ADT/PointerUnion.h
@@ -89,7 +89,7 @@ namespace llvm {
     int is() const {
       int TyNo = ::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0);
       assert(TyNo != -1 && "Type query could never succeed on PointerUnion!");
-      return Val.getInt() == TyNo;
+      return static_cast<int>(Val.getInt()) == TyNo;
     }
     
     /// get<T>() - Return the value of the specified pointer type. If the
diff --git a/include/llvm/Bitcode/BitstreamReader.h b/include/llvm/Bitcode/BitstreamReader.h
index b7ae47d1e62..28249eec0b0 100644
--- a/include/llvm/Bitcode/BitstreamReader.h
+++ b/include/llvm/Bitcode/BitstreamReader.h
@@ -324,7 +324,7 @@ public:
 
   uint64_t ReadVBR64(unsigned NumBits) {
     uint64_t Piece = Read(NumBits);
-    if ((Piece & (1U << (NumBits-1))) == 0)
+    if ((Piece & (uint64_t(1) << (NumBits-1))) == 0)
       return Piece;
 
     uint64_t Result = 0;
@@ -332,7 +332,7 @@ public:
     while (1) {
       Result |= (Piece & ((1U << (NumBits-1))-1)) << NextBit;
 
-      if ((Piece & (1U << (NumBits-1))) == 0)
+      if ((Piece & (uint64_t(1) << (NumBits-1))) == 0)
         return Result;
 
       NextBit += NumBits-1;