Constrain variadic constructor to ranks > 1 and add missing __device__s

[ROCm/hip commit: 96aa6e22ee]

projects/hip/include/hip/hcc_detail/hip_vector_types.h

@@ -120,7 +120,8 @@ THE SOFTWARE.
         }
         template< // TODO: constrain based on type as well.
             typename... Us,
-            typename std::enable_if<sizeof...(Us) == rank>::type* = nullptr>
+            typename std::enable_if<
+                (rank > 1) && sizeof...(Us) == rank>::type* = nullptr>
         __host__ __device__
         HIP_vector_type(Us... xs) noexcept { data = Native_vec_{xs...}; }
         __host__ __device__

projects/hip/tests/src/deviceLib/hipVectorTypesDevice.cpp

@@ -40,6 +40,7 @@ using namespace std;
 template<
     typename V,
     Enable_if_t<!is_integral<decltype(declval<V>().x)>{}>* = nullptr>
+__device__
 constexpr
 bool integer_unary_tests(const V&, const V&) {
     return true;
@@ -73,6 +74,7 @@ bool integer_unary_tests(V& f1, V& f2) {
 template<
     typename V,
     Enable_if_t<!is_integral<decltype(declval<V>().x)>{}>* = nullptr>
+__device__
 constexpr
 bool integer_binary_tests(const V&, const V&, const V&) {
     return true;