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diff --git a/contrib/llvm/lib/Target/ARC/ARCCallingConv.td b/contrib/llvm/lib/Target/ARC/ARCCallingConv.td
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index 000000000000..b7d37bc2a41f
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+++ b/contrib/llvm/lib/Target/ARC/ARCCallingConv.td
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+//===- ARCCallingConv.td - Calling Conventions for ARC -----*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This describes the calling conventions for ARC architecture.
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// ARC Return Value Calling Convention
+//===----------------------------------------------------------------------===//
+def RetCC_ARC : CallingConv<[
+  // i32 are returned in registers R0, R1, R2, R3
+  CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3]>>,
+
+  // Integer values get stored in stack slots that are 4 bytes in
+  // size and 4-byte aligned.
+  CCIfType<[i64], CCAssignToStack<8, 4>>,
+  CCIfType<[i32], CCAssignToStack<4, 4>>
+]>;
+
+//===----------------------------------------------------------------------===//
+// ARC Argument Calling Conventions
+//===----------------------------------------------------------------------===//
+def CC_ARC : CallingConv<[
+  // Promote i8/i16 arguments to i32.
+  CCIfType<[i8, i16], CCPromoteToType<i32>>,
+
+  // The first 8 integer arguments are passed in integer registers.
+  CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3, R4, R5, R6, R7]>>,
+
+  // Integer values get stored in stack slots that are 4 bytes in
+  // size and 4-byte aligned.
+  CCIfType<[i64], CCAssignToStack<8, 4>>,
+  CCIfType<[i32], CCAssignToStack<4, 4>>
+]>;
+
+def CSR_ARC : CalleeSavedRegs<(add (sequence "R%u", 13, 25), GP, FP)>;