1 files changed, 45 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/orc/stl_extras.h b/contrib/llvm-project/compiler-rt/lib/orc/stl_extras.h
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index 000000000000..80a6cd13ac28
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+++ b/contrib/llvm-project/compiler-rt/lib/orc/stl_extras.h
@@ -0,0 +1,45 @@
+//===-------- stl_extras.h - Useful STL related functions-------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of the ORC runtime support library.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ORC_RT_STL_EXTRAS_H
+#define ORC_RT_STL_EXTRAS_H
+
+#include <cstdint>
+#include <utility>
+#include <tuple>
+
+namespace __orc_rt {
+
+/// Substitute for std::identity.
+/// Switch to std::identity once we can use c++20.
+template <class Ty> struct identity {
+  using is_transparent = void;
+  using argument_type = Ty;
+
+  Ty &operator()(Ty &self) const { return self; }
+  const Ty &operator()(const Ty &self) const { return self; }
+};
+
+/// Substitute for std::bit_ceil.
+constexpr uint64_t bit_ceil(uint64_t Val) noexcept {
+  Val |= (Val >> 1);
+  Val |= (Val >> 2);
+  Val |= (Val >> 4);
+  Val |= (Val >> 8);
+  Val |= (Val >> 16);
+  Val |= (Val >> 32);
+  return Val + 1;
+}
+
+} // namespace __orc_rt
+
+#endif // ORC_RT_STL_EXTRAS