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

1 files changed, 68 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Support/EndianStream.h b/clang-r353983/include/llvm/Support/EndianStream.h
new file mode 100644
index 00000000..87898038
--- /dev/null
+++ b/clang-r353983/include/llvm/Support/EndianStream.h
@@ -0,0 +1,68 @@
+//===- EndianStream.h - Stream ops with endian specific data ----*- 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 defines utilities for operating on streams that have endian
+// specific data.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_ENDIANSTREAM_H
+#define LLVM_SUPPORT_ENDIANSTREAM_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+namespace support {
+
+namespace endian {
+
+template <typename value_type>
+inline void write(raw_ostream &os, value_type value, endianness endian) {
+  value = byte_swap<value_type>(value, endian);
+  os.write((const char *)&value, sizeof(value_type));
+}
+
+template <>
+inline void write<float>(raw_ostream &os, float value, endianness endian) {
+  write(os, FloatToBits(value), endian);
+}
+
+template <>
+inline void write<double>(raw_ostream &os, double value,
+                          endianness endian) {
+  write(os, DoubleToBits(value), endian);
+}
+
+template <typename value_type>
+inline void write(raw_ostream &os, ArrayRef<value_type> vals,
+                  endianness endian) {
+  for (value_type v : vals)
+    write(os, v, endian);
+}
+
+/// Adapter to write values to a stream in a particular byte order.
+struct Writer {
+  raw_ostream &OS;
+  endianness Endian;
+  Writer(raw_ostream &OS, endianness Endian) : OS(OS), Endian(Endian) {}
+  template <typename value_type> void write(ArrayRef<value_type> Val) {
+    endian::write(OS, Val, Endian);
+  }
+  template <typename value_type> void write(value_type Val) {
+    endian::write(OS, Val, Endian);
+  }
+};
+
+} // end namespace endian
+
+} // end namespace support
+} // end namespace llvm
+
+#endif