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diff --git a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h
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index 0000000..eb11440
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+++ b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h
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+//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- C++ -*-====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file contains the declaration of the WebAssembly-specific
+/// utility functions.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H
+#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H
+
+namespace llvm {
+
+class MachineInstr;
+class WebAssemblyFunctionInfo;
+
+namespace WebAssembly {
+
+bool isArgument(const MachineInstr &MI);
+bool isCopy(const MachineInstr &MI);
+bool isTee(const MachineInstr &MI);
+bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
+
+} // end namespace WebAssembly
+} // end namespace llvm
+
+#endif