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diff --git a/contrib/llvm/lib/Target/Hexagon/Hexagon.h b/contrib/llvm/lib/Target/Hexagon/Hexagon.h
new file mode 100644
index 000000000000..ed7d9578902e
--- /dev/null
+++ b/contrib/llvm/lib/Target/Hexagon/Hexagon.h
@@ -0,0 +1,56 @@
+//=-- Hexagon.h - Top-level interface for Hexagon representation --*- C++ -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the entry points for global functions defined in the LLVM
+// Hexagon back-end.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGON_H
+#define LLVM_LIB_TARGET_HEXAGON_HEXAGON_H
+
+#define Hexagon_POINTER_SIZE 4
+
+#define Hexagon_PointerSize (Hexagon_POINTER_SIZE)
+#define Hexagon_PointerSize_Bits (Hexagon_POINTER_SIZE * 8)
+#define Hexagon_WordSize Hexagon_PointerSize
+#define Hexagon_WordSize_Bits Hexagon_PointerSize_Bits
+
+// allocframe saves LR and FP on stack before allocating
+// a new stack frame. This takes 8 bytes.
+#define HEXAGON_LRFP_SIZE 8
+
+// Normal instruction size (in bytes).
+#define HEXAGON_INSTR_SIZE 4
+
+// Maximum number of words and instructions in a packet.
+#define HEXAGON_PACKET_SIZE 4
+#define HEXAGON_MAX_PACKET_SIZE (HEXAGON_PACKET_SIZE * HEXAGON_INSTR_SIZE)
+// Minimum number of instructions in an end-loop packet.
+#define HEXAGON_PACKET_INNER_SIZE 2
+#define HEXAGON_PACKET_OUTER_SIZE 3
+// Maximum number of instructions in a packet before shuffling,
+// including a compound one or a duplex or an extender.
+#define HEXAGON_PRESHUFFLE_PACKET_SIZE (HEXAGON_PACKET_SIZE + 3)
+
+// Name of the global offset table as defined by the Hexagon ABI
+#define HEXAGON_GOT_SYM_NAME "_GLOBAL_OFFSET_TABLE_"
+
+#include "MCTargetDesc/HexagonMCTargetDesc.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+  class HexagonTargetMachine;
+
+  /// \brief Creates a Hexagon-specific Target Transformation Info pass.
+  ImmutablePass *createHexagonTargetTransformInfoPass(const HexagonTargetMachine *TM);
+} // end namespace llvm;
+
+#endif