[SYCL] Add support for union types as kernel arguments

Signed-off-by: Soumi Manna <[email protected]>

Author: smanna12

clang/lib/Sema/SemaSYCL.cpp

@@ -941,8 +941,8 @@ class KernelObjVisitor {
       else if (FieldTy->isArrayType()) {
         if (KF_FOR_EACH(handleArrayType, Field, FieldTy))
           VisitArrayElements(Field, FieldTy, handlers...);
-      } else if (FieldTy->isScalarType() || FieldTy->isVectorType() ||
-		  FieldTy->isUnionType())
+      } else if (FieldTy->isScalarType() || FieldTy->isUnionType() ||
+		  FieldTy->isVectorType())
         KF_FOR_EACH(handleSimpleType, Field, FieldTy);
       else
         KF_FOR_EACH(handleOtherType, Field, FieldTy);

clang/test/CodeGenSYCL/union_kernel_param.cpp

@@ -55,4 +55,3 @@ bool test0() {
     });
   }
 }
-