Reverting size_type for the containers from size_type to unsigned.

Various places in LLVM assume that container size and count are unsigned
and do not use the container size_type. Therefore they break compilation
(or possibly executation) for LP64 systems where size_t is 64 bit while
unsigned is still 32 bit.

If we'll ever that many items in the container size_type could be made
size_t for a specific containers after reviweing its other uses.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211353 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/DenseMap.h

@@ -43,7 +43,7 @@ protected:
   typedef std::pair<KeyT, ValueT> BucketT;
 
 public:
-  typedef size_t size_type;
+  typedef unsigned size_type;
   typedef KeyT key_type;
   typedef ValueT mapped_type;
   typedef BucketT value_type;