[SYCL] Use aggregate initialization for group_local_memory arrays (#10367)

Signed-off-by: Michael Aziz <[email protected]>

Author: 0x12CC

sycl/include/sycl/ext/oneapi/group_local_memory.hpp

@@ -54,7 +54,7 @@ std::enable_if_t<
   __attribute__((opencl_local)) std::uint8_t *AllocatedMem =
       __sycl_allocateLocalMemory(sizeof(T), alignof(T));
   if (g.get_local_linear_id() == 0)
-    new (AllocatedMem) T(std::forward<Args>(args)...);
+    new (AllocatedMem) T{std::forward<Args>(args)...};
   sycl::detail::workGroupBarrier();
   return reinterpret_cast<__attribute__((opencl_local)) T *>(AllocatedMem);
 #else

sycl/test-e2e/Basic/group_local_memory.cpp

@@ -0,0 +1,23 @@
+// RUN: %{build} -o %t.out
+// RUN: %{run} %t.out
+
+#include <CL/sycl.hpp>
+
+constexpr int N = 5;
+
+int main() {
+  sycl::queue q;
+  int *ptr = sycl::malloc_shared<int>(N, q);
+  q.parallel_for(sycl::nd_range<1>{1, 1}, [=](sycl::nd_item<1> it) {
+     auto g = it.get_group();
+     auto mem = sycl::ext::oneapi::group_local_memory<int[N]>(g, 1, 2, 3, 4, 5);
+     auto ref = *mem;
+     for (int i = 0; i < N; ++i) {
+       ptr[i] = ref[i];
+     }
+   }).wait();
+  for (int i = 0; i < N; ++i) {
+    assert(ptr[i] == (i + 1));
+  }
+  sycl::free(ptr, q);
+}