llvm/llvm/lib/CodeGen/GCEmptyBasicBlocks.cpp

//===-- GCEmptyBasicBlocks.cpp ----------------------------------*- 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 implementation of empty blocks garbage collection
/// pass.
///
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/InitializePasses.h"

usingnamespacellvm;

#define DEBUG_TYPE …

STATISTIC(NumEmptyBlocksRemoved, "Number of empty blocks removed");

class GCEmptyBasicBlocks : public MachineFunctionPass { … };

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

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

MachineFunctionPass *llvm::createGCEmptyBasicBlocksPass() { … }