llvm/llvm/include/llvm/CodeGen/DbgEntityHistoryCalculator.h

//===- llvm/CodeGen/DbgEntityHistoryCalculator.h ----------------*- 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_DBGENTITYHISTORYCALCULATOR_H
#define LLVM_CODEGEN_DBGENTITYHISTORYCALCULATOR_H

#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineInstr.h"
#include <utility>

namespace llvm {

class DILocation;
class LexicalScopes;
class DINode;
class MachineFunction;
class TargetRegisterInfo;

/// Record instruction ordering so we can query their relative positions within
/// a function. Meta instructions are given the same ordinal as the preceding
/// non-meta instruction. Class state is invalid if MF is modified after
/// calling initialize.
class InstructionOrdering { … };

/// For each user variable, keep a list of instruction ranges where this
/// variable is accessible. The variables are listed in order of appearance.
class DbgValueHistoryMap { … };

/// For each inlined instance of a source-level label, keep the corresponding
/// DBG_LABEL instruction. The DBG_LABEL instruction could be used to generate
/// a temporary (assembler) label before it.
class DbgLabelInstrMap { … };

void calculateDbgEntityHistory(const MachineFunction *MF,
                               const TargetRegisterInfo *TRI,
                               DbgValueHistoryMap &DbgValues,
                               DbgLabelInstrMap &DbgLabels);

} // end namespace llvm

#endif // LLVM_CODEGEN_DBGENTITYHISTORYCALCULATOR_H