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📄 AtomicExpandUtils.h(2.49 KB)
📄 BasicTTIImpl.h(73.64 KB)
📄 BuiltinGCs.h(1008 B)
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📄 GCMetadata.h(7.24 KB)
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📄 GCStrategy.h(5.25 KB)
📁 GlobalISel
📄 ISDOpcodes.h(52.75 KB)
📄 IndirectThunks.h(3.85 KB)
📄 IntrinsicLowering.h(1.67 KB)
📄 LatencyPriorityQueue.h(3.09 KB)
📄 LazyMachineBlockFrequencyInfo.h(2.82 KB)
📄 LexicalScopes.h(10.06 KB)
📄 LinkAllAsmWriterComponents.h(1.34 KB)
📄 LinkAllCodegenComponents.h(2.18 KB)
📄 LiveInterval.h(37.24 KB)
📄 LiveIntervalCalc.h(2.91 KB)
📄 LiveIntervalUnion.h(6.93 KB)
📄 LiveIntervals.h(19.86 KB)
📄 LivePhysRegs.h(7.51 KB)
📄 LiveRangeCalc.h(11.49 KB)
📄 LiveRangeEdit.h(10.45 KB)
📄 LiveRegMatrix.h(6.18 KB)
📄 LiveRegUnits.h(6.24 KB)
📄 LiveStacks.h(3.35 KB)
📄 LiveVariables.h(12.98 KB)
📄 LoopTraversal.h(4.38 KB)
📄 LowLevelType.h(1.28 KB)
📄 MBFIWrapper.h(1.58 KB)
📄 MIRFormatter.h(3.13 KB)
📁 MIRParser
📄 MIRPrinter.h(1.73 KB)
📄 MIRYamlMapping.h(23.95 KB)
📄 MachORelocation.h(2.19 KB)
📄 MachineBasicBlock.h(42.95 KB)
📄 MachineBlockFrequencyInfo.h(3.21 KB)
📄 MachineBranchProbabilityInfo.h(2.69 KB)
📄 MachineCombinerPattern.h(3.5 KB)
📄 MachineConstantPool.h(5.25 KB)
📄 MachineDominanceFrontier.h(2.93 KB)
📄 MachineDominators.h(9.59 KB)
📄 MachineFrameInfo.h(34.84 KB)
📄 MachineFunction.h(42.94 KB)
📄 MachineFunctionPass.h(2.93 KB)
📄 MachineInstr.h(73.72 KB)
📄 MachineInstrBuilder.h(22.84 KB)
📄 MachineInstrBundle.h(10.16 KB)
📄 MachineInstrBundleIterator.h(10.92 KB)
📄 MachineJumpTableInfo.h(4.66 KB)
📄 MachineLoopInfo.h(7.3 KB)
📄 MachineLoopUtils.h(1.74 KB)
📄 MachineMemOperand.h(12.69 KB)
📄 MachineModuleInfo.h(9.88 KB)
📄 MachineModuleInfoImpls.h(3.36 KB)
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📄 MachineOptimizationRemarkEmitter.h(8.99 KB)
📄 MachineOutliner.h(8.04 KB)
📄 MachinePassRegistry.h(6.1 KB)
📄 MachinePipeliner.h(21.17 KB)
📄 MachinePostDominators.h(2.93 KB)
📄 MachineRegionInfo.h(5.93 KB)
📄 MachineRegisterInfo.h(46.75 KB)
📄 MachineSSAUpdater.h(4.37 KB)
📄 MachineScheduler.h(36.6 KB)
📄 MachineSizeOpts.h(1.86 KB)
📄 MachineTraceMetrics.h(17.17 KB)
📄 MacroFusion.h(1.96 KB)
📄 ModuloSchedule.h(15.8 KB)
📄 NonRelocatableStringpool.h(2.9 KB)
📁 PBQP
📄 PBQPRAConstraint.h(1.83 KB)
📄 ParallelCG.h(1.66 KB)
📄 Passes.h(18.96 KB)
📄 PreISelIntrinsicLowering.h(944 B)
📄 PseudoSourceValue.h(6.21 KB)
📄 RDFGraph.h(33.73 KB)
📄 RDFLiveness.h(5.01 KB)
📄 RDFRegisters.h(6.51 KB)
📄 ReachingDefAnalysis.h(10.68 KB)
📄 RegAllocPBQP.h(16.47 KB)
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📄 Register.h(5.61 KB)
📄 RegisterClassInfo.h(4.86 KB)
📄 RegisterPressure.h(21.04 KB)
📄 RegisterScavenging.h(8.73 KB)
📄 RegisterUsageInfo.h(2.3 KB)
📄 ResourcePriorityQueue.h(4.19 KB)
📄 RuntimeLibcalls.h(3.05 KB)
📄 SDNodeProperties.td(1.57 KB)
📄 ScheduleDAG.h(28.92 KB)
📄 ScheduleDAGInstrs.h(15.49 KB)
📄 ScheduleDAGMutation.h(1021 B)
📄 ScheduleDFS.h(5.79 KB)
📄 ScheduleHazardRecognizer.h(4.65 KB)
📄 SchedulerRegistry.h(4.27 KB)
📄 ScoreboardHazardRecognizer.h(3.7 KB)
📄 SelectionDAG.h(89.12 KB)
📄 SelectionDAGAddressAnalysis.h(3.58 KB)
📄 SelectionDAGISel.h(13.48 KB)
📄 SelectionDAGNodes.h(91.77 KB)
📄 SelectionDAGTargetInfo.h(7.99 KB)
📄 SlotIndexes.h(24.12 KB)
📄 Spiller.h(1.16 KB)
📄 StackMaps.h(11.45 KB)
📄 StackProtector.h(4.1 KB)
📄 SwiftErrorValueTracking.h(3.87 KB)
📄 SwitchLoweringUtils.h(9.51 KB)
📄 TailDuplicator.h(5.54 KB)
📄 TargetCallingConv.h(8.26 KB)
📄 TargetFrameLowering.h(19.21 KB)
📄 TargetInstrInfo.h(84.48 KB)
📄 TargetLowering.h(194.17 KB)
📄 TargetLoweringObjectFileImpl.h(11.63 KB)
📄 TargetOpcodes.h(1.37 KB)
📄 TargetPassConfig.h(17.9 KB)
📄 TargetRegisterInfo.h(48.65 KB)
📄 TargetSchedule.h(7.75 KB)
📄 TargetSubtargetInfo.h(12.53 KB)
📄 UnreachableBlockElim.h(1.39 KB)
📄 ValueTypes.h(17.2 KB)
📄 ValueTypes.td(11.42 KB)
📄 VirtRegMap.h(6.37 KB)
📄 WasmEHFuncInfo.h(1.92 KB)
📄 WinEHFuncInfo.h(4.01 KB)

Editing: MachineJumpTableInfo.h

//===-- CodeGen/MachineJumpTableInfo.h - Abstract Jump Tables  --*- 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
//
//===----------------------------------------------------------------------===//
//
// The MachineJumpTableInfo class keeps track of jump tables referenced by
// lowered switch instructions in the MachineFunction.
//
// Instructions reference the address of these jump tables through the use of
// MO_JumpTableIndex values.  When emitting assembly or machine code, these
// virtual address references are converted to refer to the address of the
// function jump tables.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_MACHINEJUMPTABLEINFO_H
#define LLVM_CODEGEN_MACHINEJUMPTABLEINFO_H

#include "llvm/Support/Printable.h"
#include <cassert>
#include <vector>

namespace llvm {

class MachineBasicBlock;
class DataLayout;
class raw_ostream;

/// MachineJumpTableEntry - One jump table in the jump table info.
///
struct MachineJumpTableEntry {
  /// MBBs - The vector of basic blocks from which to create the jump table.
  std::vector<MachineBasicBlock*> MBBs;

explicit MachineJumpTableEntry(const std::vector<MachineBasicBlock*> &M)
  : MBBs(M) {}
};

class MachineJumpTableInfo {
public:
  /// JTEntryKind - This enum indicates how each entry of the jump table is
  /// represented and emitted.
  enum JTEntryKind {
    /// EK_BlockAddress - Each entry is a plain address of block, e.g.:
    ///     .word LBB123
    EK_BlockAddress,

/// EK_GPRel64BlockAddress - Each entry is an address of block, encoded
    /// with a relocation as gp-relative, e.g.:
    ///     .gpdword LBB123
    EK_GPRel64BlockAddress,

/// EK_GPRel32BlockAddress - Each entry is an address of block, encoded
    /// with a relocation as gp-relative, e.g.:
    ///     .gprel32 LBB123
    EK_GPRel32BlockAddress,

/// EK_LabelDifference32 - Each entry is the address of the block minus
    /// the address of the jump table.  This is used for PIC jump tables where
    /// gprel32 is not supported.  e.g.:
    ///      .word LBB123 - LJTI1_2
    /// If the .set directive is supported, this is emitted as:
    ///      .set L4_5_set_123, LBB123 - LJTI1_2
    ///      .word L4_5_set_123
    EK_LabelDifference32,

/// EK_Inline - Jump table entries are emitted inline at their point of
    /// use. It is the responsibility of the target to emit the entries.
    EK_Inline,

/// EK_Custom32 - Each entry is a 32-bit value that is custom lowered by the
    /// TargetLowering::LowerCustomJumpTableEntry hook.
    EK_Custom32
  };
private:
  JTEntryKind EntryKind;
  std::vector<MachineJumpTableEntry> JumpTables;
public:
  explicit MachineJumpTableInfo(JTEntryKind Kind): EntryKind(Kind) {}

JTEntryKind getEntryKind() const { return EntryKind; }

/// getEntrySize - Return the size of each entry in the jump table.
  unsigned getEntrySize(const DataLayout &TD) const;
  /// getEntryAlignment - Return the alignment of each entry in the jump table.
  unsigned getEntryAlignment(const DataLayout &TD) const;

/// createJumpTableIndex - Create a new jump table.
  ///
  unsigned createJumpTableIndex(const std::vector<MachineBasicBlock*> &DestBBs);

/// isEmpty - Return true if there are no jump tables.
  ///
  bool isEmpty() const { return JumpTables.empty(); }

const std::vector<MachineJumpTableEntry> &getJumpTables() const {
    return JumpTables;
  }

/// RemoveJumpTable - Mark the specific index as being dead.  This will
  /// prevent it from being emitted.
  void RemoveJumpTable(unsigned Idx) {
    JumpTables[Idx].MBBs.clear();
  }

/// ReplaceMBBInJumpTables - If Old is the target of any jump tables, update
  /// the jump tables to branch to New instead.
  bool ReplaceMBBInJumpTables(MachineBasicBlock *Old, MachineBasicBlock *New);

/// ReplaceMBBInJumpTable - If Old is a target of the jump tables, update
  /// the jump table to branch to New instead.
  bool ReplaceMBBInJumpTable(unsigned Idx, MachineBasicBlock *Old,
                             MachineBasicBlock *New);

/// print - Used by the MachineFunction printer to print information about
  /// jump tables.  Implemented in MachineFunction.cpp
  ///
  void print(raw_ostream &OS) const;

/// dump - Call to stderr.
  ///
  void dump() const;
};

/// Prints a jump table entry reference.
///
/// The format is:
///   %jump-table.5       - a jump table entry with index == 5.
///
/// Usage: OS << printJumpTableEntryReference(Idx) << '\n';
Printable printJumpTableEntryReference(unsigned Idx);

} // End llvm namespace

#endif

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