43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
//===- BasicBlockSectionUtils.h - Utilities for basic block sections --===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
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#define LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/CommandLine.h"
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namespace llvm {
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extern LLVM_ABI cl::opt<std::string> BBSectionsColdTextPrefix;
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class MachineFunction;
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class MachineBasicBlock;
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using MachineBasicBlockComparator =
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function_ref<bool(const MachineBasicBlock &, const MachineBasicBlock &)>;
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LLVM_ABI void
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sortBasicBlocksAndUpdateBranches(MachineFunction &MF,
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MachineBasicBlockComparator MBBCmp);
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LLVM_ABI void avoidZeroOffsetLandingPad(MachineFunction &MF);
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/// This checks if the source of this function has drifted since this binary was
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/// profiled previously.
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/// For now, we are piggy backing on what PGO does to
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/// detect this with instrumented profiles. PGO emits an hash of the IR and
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/// checks if the hash has changed. Advanced basic block layout is usually done
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/// on top of PGO optimized binaries and hence this check works well in
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/// practice.
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LLVM_ABI bool hasInstrProfHashMismatch(MachineFunction &MF);
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} // end namespace llvm
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#endif // LLVM_CODEGEN_BASICBLOCKSECTIONUTILS_H
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