Use the same underlying type for bitfields

MSVC allocates fresh storage for consecutive bitfields with different
underlying types.

llvm-svn: 273645

llvm/include/llvm/Analysis/AliasSetTracker.h

@@ -151,7 +151,7 @@ class AliasSet : public ilist_node<AliasSet> {
   unsigned Alias : 1;
 
   /// True if this alias set contains volatile loads or stores.
-  bool Volatile : 1;
+  unsigned Volatile : 1;
 
   void addRef() { ++RefCount; }
   void dropRef(AliasSetTracker &AST) {

llvm/include/llvm/CodeGen/FunctionLoweringInfo.h

@@ -171,7 +171,7 @@ public:
 
   struct LiveOutInfo {
     unsigned NumSignBits : 31;
-    bool IsValid : 1;
+    unsigned IsValid : 1;
     APInt KnownOne, KnownZero;
     LiveOutInfo() : NumSignBits(0), IsValid(true), KnownOne(1, 0),
                     KnownZero(1, 0) {}

llvm/include/llvm/MC/MCSymbol.h

@@ -87,7 +87,7 @@ protected:
   /// IsUsed - True if this symbol has been used.
   mutable unsigned IsUsed : 1;
 
-  mutable bool IsRegistered : 1;
+  mutable unsigned IsRegistered : 1;
 
   /// This symbol is visible outside this translation unit.
   mutable unsigned IsExternal : 1;