Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Support/SwapByteOrder.h b/linux-x64/clang/include/llvm/Support/SwapByteOrder.h
new file mode 100644
index 0000000..71d3724
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Support/SwapByteOrder.h
@@ -0,0 +1,127 @@
+//===- SwapByteOrder.h - Generic and optimized byte swaps -------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares generic and optimized functions to swap the byte order of
+// an integral type.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_SWAPBYTEORDER_H
+#define LLVM_SUPPORT_SWAPBYTEORDER_H
+
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DataTypes.h"
+#include <cstddef>
+#if defined(_MSC_VER) && !defined(_DEBUG)
+#include <stdlib.h>
+#endif
+
+namespace llvm {
+namespace sys {
+
+/// SwapByteOrder_16 - This function returns a byte-swapped representation of
+/// the 16-bit argument.
+inline uint16_t SwapByteOrder_16(uint16_t value) {
+#if defined(_MSC_VER) && !defined(_DEBUG)
+ // The DLL version of the runtime lacks these functions (bug!?), but in a
+ // release build they're replaced with BSWAP instructions anyway.
+ return _byteswap_ushort(value);
+#else
+ uint16_t Hi = value << 8;
+ uint16_t Lo = value >> 8;
+ return Hi | Lo;
+#endif
+}
+
+/// SwapByteOrder_32 - This function returns a byte-swapped representation of
+/// the 32-bit argument.
+inline uint32_t SwapByteOrder_32(uint32_t value) {
+#if defined(__llvm__) || (LLVM_GNUC_PREREQ(4, 3, 0) && !defined(__ICC))
+ return __builtin_bswap32(value);
+#elif defined(_MSC_VER) && !defined(_DEBUG)
+ return _byteswap_ulong(value);
+#else
+ uint32_t Byte0 = value & 0x000000FF;
+ uint32_t Byte1 = value & 0x0000FF00;
+ uint32_t Byte2 = value & 0x00FF0000;
+ uint32_t Byte3 = value & 0xFF000000;
+ return (Byte0 << 24) | (Byte1 << 8) | (Byte2 >> 8) | (Byte3 >> 24);
+#endif
+}
+
+/// SwapByteOrder_64 - This function returns a byte-swapped representation of
+/// the 64-bit argument.
+inline uint64_t SwapByteOrder_64(uint64_t value) {
+#if defined(__llvm__) || (LLVM_GNUC_PREREQ(4, 3, 0) && !defined(__ICC))
+ return __builtin_bswap64(value);
+#elif defined(_MSC_VER) && !defined(_DEBUG)
+ return _byteswap_uint64(value);
+#else
+ uint64_t Hi = SwapByteOrder_32(uint32_t(value));
+ uint32_t Lo = SwapByteOrder_32(uint32_t(value >> 32));
+ return (Hi << 32) | Lo;
+#endif
+}
+
+inline unsigned char getSwappedBytes(unsigned char C) { return C; }
+inline signed char getSwappedBytes(signed char C) { return C; }
+inline char getSwappedBytes(char C) { return C; }
+
+inline unsigned short getSwappedBytes(unsigned short C) { return SwapByteOrder_16(C); }
+inline signed short getSwappedBytes( signed short C) { return SwapByteOrder_16(C); }
+
+inline unsigned int getSwappedBytes(unsigned int C) { return SwapByteOrder_32(C); }
+inline signed int getSwappedBytes( signed int C) { return SwapByteOrder_32(C); }
+
+#if __LONG_MAX__ == __INT_MAX__
+inline unsigned long getSwappedBytes(unsigned long C) { return SwapByteOrder_32(C); }
+inline signed long getSwappedBytes( signed long C) { return SwapByteOrder_32(C); }
+#elif __LONG_MAX__ == __LONG_LONG_MAX__
+inline unsigned long getSwappedBytes(unsigned long C) { return SwapByteOrder_64(C); }
+inline signed long getSwappedBytes( signed long C) { return SwapByteOrder_64(C); }
+#else
+#error "Unknown long size!"
+#endif
+
+inline unsigned long long getSwappedBytes(unsigned long long C) {
+ return SwapByteOrder_64(C);
+}
+inline signed long long getSwappedBytes(signed long long C) {
+ return SwapByteOrder_64(C);
+}
+
+inline float getSwappedBytes(float C) {
+ union {
+ uint32_t i;
+ float f;
+ } in, out;
+ in.f = C;
+ out.i = SwapByteOrder_32(in.i);
+ return out.f;
+}
+
+inline double getSwappedBytes(double C) {
+ union {
+ uint64_t i;
+ double d;
+ } in, out;
+ in.d = C;
+ out.i = SwapByteOrder_64(in.i);
+ return out.d;
+}
+
+template<typename T>
+inline void swapByteOrder(T &Value) {
+ Value = getSwappedBytes(Value);
+}
+
+} // end namespace sys
+} // end namespace llvm
+
+#endif