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//===- BasicBlockSectionUtils.h - Utilities for basic block sections --===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
#define LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/CommandLine.h"
namespace llvm {
extern cl::opt<std::string> BBSectionsColdTextPrefix;
class MachineFunction;
class MachineBasicBlock;
using MachineBasicBlockComparator =
function_ref<bool(const MachineBasicBlock &, const MachineBasicBlock &)>;
void sortBasicBlocksAndUpdateBranches(MachineFunction &MF,
MachineBasicBlockComparator MBBCmp);
void avoidZeroOffsetLandingPad(MachineFunction &MF);
/// This checks if the source of this function has drifted since this binary was
/// profiled previously.
/// For now, we are piggy backing on what PGO does to
/// detect this with instrumented profiles. PGO emits an hash of the IR and
/// checks if the hash has changed. Advanced basic block layout is usually done
/// on top of PGO optimized binaries and hence this check works well in
/// practice.
bool hasInstrProfHashMismatch(MachineFunction &MF);
} // end namespace llvm
#endif // LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
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