[SYCL] Replace C-style cast to static_cast for KernelNameType (#1895)

Cast integer to enumeration type using static_cast for kernels defined as templated function object where the template parameter is of enum type (scoped and unscoped).

Author: srividya-sundaram

clang/lib/Sema/SemaSYCL.cpp

@@ -2145,7 +2145,9 @@ static void printArgument(ASTContext &Ctx, raw_ostream &ArgOS,
 
     if (ET) {
       const llvm::APSInt &Val = Arg.getAsIntegral();
-      ArgOS << "(" << ET->getDecl()->getQualifiedNameAsString() << ")" << Val;
+      ArgOS << "static_cast<" << ET->getDecl()->getQualifiedNameAsString()
+            << ">"
+            << "(" << Val << ")";
     } else {
       Arg.print(P, ArgOS);
     }

clang/test/CodeGenSYCL/kernelname-enum.cpp

@@ -197,14 +197,14 @@ int main() {
 // CHECK: template <EnumValueIn EnumValue, typename EnumTypeIn> class Baz;
 // CHECK: template <typename EnumTypeOut, template <EnumValueIn EnumValue, typename EnumTypeIn> class T> class dummy_functor_8;
 // CHECK: Specializations of KernelInfo for kernel function types:
-// CHECK: template <> struct KernelInfo<::dummy_functor_1<(no_namespace_int)0>>
-// CHECK: template <> struct KernelInfo<::dummy_functor_2<(no_namespace_short)1>>
-// CHECK: template <> struct KernelInfo<::dummy_functor_3<(internal::namespace_short)1>>
-// CHECK: template <> struct KernelInfo<::dummy_functor_4<(enum_in_anonNS)1>>
-// CHECK: template <> struct KernelInfo<::dummy_functor_5<(no_type_set)0>>
-// CHECK: template <> struct KernelInfo<::dummy_functor_6<(unscoped_enum)0>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_1<static_cast<no_namespace_int>(0)>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_2<static_cast<no_namespace_short>(1)>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_3<static_cast<internal::namespace_short>(1)>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_4<static_cast<enum_in_anonNS>(1)>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_5<static_cast<no_type_set>(0)>>
+// CHECK: template <> struct KernelInfo<::dummy_functor_6<static_cast<unscoped_enum>(0)>>
 // CHECK: template <> struct KernelInfo<::dummy_functor_7<::no_namespace_int>>
 // CHECK: template <> struct KernelInfo<::dummy_functor_7<::internal::namespace_short>>
-// CHECK: template <> struct KernelInfo<::T1<::T2<(type_argument_template_enum::E)0>>>
+// CHECK: template <> struct KernelInfo<::T1<::T2<static_cast<type_argument_template_enum::E>(0)>>>
 // CHECK: template <> struct KernelInfo<::T1<::T3<::type_argument_template_enum::E>>>
 // CHECK: template <> struct KernelInfo<::dummy_functor_8<::EnumTypeOut, Baz>>