Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 52 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Support/thread.h b/clang-r353983/include/llvm/Support/thread.h
new file mode 100644
index 00000000..084ed161
--- /dev/null
+++ b/clang-r353983/include/llvm/Support/thread.h
@@ -0,0 +1,52 @@
+//===-- llvm/Support/thread.h - Wrapper for <thread> ------------*- 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 header is a wrapper for <thread> that works around problems with the
+// MSVC headers when exceptions are disabled. It also provides llvm::thread,
+// which is either a typedef of std::thread or a replacement that calls the
+// function synchronously depending on the value of LLVM_ENABLE_THREADS.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_THREAD_H
+#define LLVM_SUPPORT_THREAD_H
+
+#include "llvm/Config/llvm-config.h"
+
+#if LLVM_ENABLE_THREADS
+
+#include <thread>
+
+namespace llvm {
+typedef std::thread thread;
+}
+
+#else // !LLVM_ENABLE_THREADS
+
+#include <utility>
+
+namespace llvm {
+
+struct thread {
+  thread() {}
+  thread(thread &&other) {}
+  template <class Function, class... Args>
+  explicit thread(Function &&f, Args &&... args) {
+    f(std::forward<Args>(args)...);
+  }
+  thread(const thread &) = delete;
+
+  void join() {}
+  static unsigned hardware_concurrency() { return 1; };
+};
+
+}
+
+#endif // LLVM_ENABLE_THREADS
+
+#endif