[llvm-branch-commits] [llvm] [libsycl] Add parallel_for feature (PR #189068)

[Sergey Semenov via llvm-branch-commits]

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@@ -0,0 +1,187 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains helpers for kernel invocation.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBSYCL___IMPL_DETAIL_KERNEL_ARG_HELPERS
+#define _LIBSYCL___IMPL_DETAIL_KERNEL_ARG_HELPERS
+
+#include <sycl/__impl/index_space_classes.hpp>
+
+#include <sycl/__impl/detail/config.hpp>
+
+#include <sycl/__spirv/spirv_vars.hpp>
+
+#include <type_traits>
+
+_LIBSYCL_BEGIN_NAMESPACE_SYCL
+
+namespace detail {
+
+/// \name  Helpers for the unnamed lambda.
+/// @{
+/// This class is the default kernel name template parameter type for kernel
+/// invocation APIs such as single_task.
+class AutoName {};
+
+/// Helper struct to get a kernel name type based on given Name and Type
+/// types: if Name is undefined (is a AutoName) then Type becomes
+/// the Name.
+template <typename Name, typename Type> struct get_kernel_name_t {
+  using name = Name;
+};
+
+/// Specialization for the case when Name is undefined.
+/// This is only legal with our compiler with the unnamed lambda support or if
+/// the kernel is a functor object.
+template <typename Type> struct get_kernel_name_t<detail::AutoName, Type> {
+  using name = Type;
+};
+/// @}
+
+/// \name  Helpers to verify kernel lambda type.
----------------
sergey-semenov wrote:

```suggestion
/// \name  Helpers to verify kernel lambda types.
```

https://github.com/llvm/llvm-project/pull/189068