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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_WEBASSEMBLYUTILITIES_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H
#include "llvm/CodeGen/MachineBasicBlock.h"
namespace llvm {
class WebAssemblyFunctionInfo;
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;
/// Return the "bottom" block of an entity, which can be either a MachineLoop or
/// WebAssemblyException. This differs from MachineLoop::getBottomBlock in that
/// it works even if the entity is discontiguous.
template <typename T> MachineBasicBlock *getBottom(const T *Unit) {
MachineBasicBlock *Bottom = Unit->getHeader();
for (MachineBasicBlock *MBB : Unit->blocks())
if (MBB->getNumber() > Bottom->getNumber())
Bottom = MBB;
return Bottom;
}
/// Returns the operand number of a callee, assuming the argument is a call
/// instruction.
const MachineOperand &getCalleeOp(const MachineInstr &MI);
} // end namespace WebAssembly
} // end namespace llvm
#endif
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