llvm/llvm/lib/Target/WebAssembly/WebAssemblyLowerBrUnless.cpp

//===-- WebAssemblyLowerBrUnless.cpp - Lower br_unless --------------------===//
//
// 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 lowers br_unless into br_if with an inverted condition.
///
/// br_unless is not currently in the spec, but it's very convenient for LLVM
/// to use. This pass allows LLVM to use it, for now.
///
//===----------------------------------------------------------------------===//

#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
#include "WebAssembly.h"
#include "WebAssemblyMachineFunctionInfo.h"
#include "WebAssemblySubtarget.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
class WebAssemblyLowerBrUnless final : public MachineFunctionPass { … };
} // end anonymous namespace

char WebAssemblyLowerBrUnless::ID = …;
INITIALIZE_PASS(…)

FunctionPass *llvm::createWebAssemblyLowerBrUnless() { … }

bool WebAssemblyLowerBrUnless::runOnMachineFunction(MachineFunction &MF) { … }