update cases with the cast

Author: spall

clang/lib/CodeGen/CGExprAgg.cpp

@@ -1552,7 +1552,7 @@ static bool castPreservesZero(const CastExpr *CE) {
   case CK_NonAtomicToAtomic:
   case CK_AtomicToNonAtomic:
   case CK_HLSLVectorTruncation:
-  case CK_HLSLAggregateCast: // TODO does CK_HLSLAggregateCast preserve zero?
+  case CK_HLSLAggregateCast:
     return true;
 
   case CK_BaseToDerivedMemberPointer:

clang/lib/Sema/Sema.cpp

@@ -707,7 +707,6 @@ ExprResult Sema::ImpCastExprToType(Expr *E, QualType Ty,
     case CK_ToVoid:
     case CK_NonAtomicToAtomic:
     case CK_HLSLArrayRValue:
-    case CK_HLSLAggregateCast:
       break;
     }
   }