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diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h
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+//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the declaration of the WebAssembly-specific
+/// utility functions.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
+#define LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
+
+#include "llvm/Support/CommandLine.h"
+
+namespace llvm {
+
+class MachineBasicBlock;
+class MachineInstr;
+class MachineOperand;
+class MCContext;
+class MCSymbolWasm;
+class TargetRegisterClass;
+class WebAssemblyFunctionInfo;
+class WebAssemblySubtarget;
+
+namespace WebAssembly {
+
+bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
+bool mayThrow(const MachineInstr &MI);
+
+// Exception-related function names
+extern const char *const ClangCallTerminateFn;
+extern const char *const CxaBeginCatchFn;
+extern const char *const CxaRethrowFn;
+extern const char *const StdTerminateFn;
+extern const char *const PersonalityWrapperFn;
+
+/// Returns the operand number of a callee, assuming the argument is a call
+/// instruction.
+const MachineOperand &getCalleeOp(const MachineInstr &MI);
+
+/// Returns the __indirect_function_table, for use in call_indirect and in
+/// function bitcasts.
+MCSymbolWasm *
+getOrCreateFunctionTableSymbol(MCContext &Ctx,
+                               const WebAssemblySubtarget *Subtarget);
+
+/// Returns the __funcref_call_table, for use in funcref calls when lowered to
+/// table.set + call_indirect.
+MCSymbolWasm *
+getOrCreateFuncrefCallTableSymbol(MCContext &Ctx,
+                                  const WebAssemblySubtarget *Subtarget);
+
+/// Find a catch instruction from an EH pad. Returns null if no catch
+/// instruction found or the catch is in an invalid location.
+MachineInstr *findCatch(MachineBasicBlock *EHPad);
+
+/// Returns the appropriate copy opcode for the given register class.
+unsigned getCopyOpcodeForRegClass(const TargetRegisterClass *RC);
+
+} // end namespace WebAssembly
+
+} // end namespace llvm
+
+#endif