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

1 files changed, 45 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Support/InitLLVM.h b/clang-r353983/include/llvm/Support/InitLLVM.h
new file mode 100644
index 00000000..57a0ebce
--- /dev/null
+++ b/clang-r353983/include/llvm/Support/InitLLVM.h
@@ -0,0 +1,45 @@
+//===- InitLLVM.h -----------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_LLVM_H
+#define LLVM_SUPPORT_LLVM_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/PrettyStackTrace.h"
+
+// The main() functions in typical LLVM tools start with InitLLVM which does
+// the following one-time initializations:
+//
+//  1. Setting up a signal handler so that pretty stack trace is printed out
+//     if a process crashes.
+//
+//  2. If running on Windows, obtain command line arguments using a
+//     multibyte character-aware API and convert arguments into UTF-8
+//     encoding, so that you can assume that command line arguments are
+//     always encoded in UTF-8 on any platform.
+//
+// InitLLVM calls llvm_shutdown() on destruction, which cleans up
+// ManagedStatic objects.
+namespace llvm {
+class InitLLVM {
+public:
+  InitLLVM(int &Argc, const char **&Argv);
+  InitLLVM(int &Argc, char **&Argv)
+      : InitLLVM(Argc, const_cast<const char **&>(Argv)) {}
+
+  ~InitLLVM();
+
+private:
+  BumpPtrAllocator Alloc;
+  SmallVector<const char *, 0> Args;
+  PrettyStackTraceProgram StackPrinter;
+};
+} // namespace llvm
+
+#endif