Avoid warnings about conversions to `bool' in MS compilers.

Patch by Nathan Jeffords!

llvm-svn: 114662

llvm/include/llvm/Attributes.h

@@ -223,7 +223,7 @@ public:
   /// paramHasAttr - Return true if the specified parameter index has the
   /// specified attribute set.
   bool paramHasAttr(unsigned Idx, Attributes Attr) const {
-    return getAttributes(Idx) & Attr;
+    return static_cast<bool>(getAttributes(Idx) & Attr);
   }
 
   /// getParamAlignment - Return the alignment for the specified function

llvm/include/llvm/Operator.h

@@ -99,7 +99,7 @@ public:
   /// hasNoSignedWrap - Test whether this operation is known to never
   /// undergo signed overflow, aka the nsw property.
   bool hasNoSignedWrap() const {
-    return SubclassOptionalData & NoSignedWrap;
+    return static_cast<bool>(SubclassOptionalData & NoSignedWrap);
   }
 
   static inline bool classof(const OverflowingBinaryOperator *) { return true; }