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ConstantPools.h	3.59 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DXContainerPSVInfo.h	3.94 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LaneBitmask.h	3.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmBackend.h	9.08 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfo.h	33.28 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoCOFF.h	900 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoDarwin.h	1.07 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoELF.h	711 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoGOFF.h	838 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoWasm.h	612 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmInfoXCOFF.h	792 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAsmMacro.h	4.86 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCAssembler.h	8.16 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCCodeEmitter.h	1.23 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCCodeView.h	9.4 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCContext.h	34.3 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCDXContainerStreamer.h	1.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCDXContainerWriter.h	1.33 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCDecoderOps.h	1.35 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCDirectives.h	3.3 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCDisassembler	-	drwxr-xr-x	2025-05-28 10:12:49	Del
MCDwarf.h	25.32 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCELFExtras.h	2.07 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCELFObjectWriter.h	7.67 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCELFStreamer.h	5.87 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCExpr.h	21.71 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCFixup.h	4.7 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCFixupKindInfo.h	1.6 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCFragment.h	19.01 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCGOFFObjectWriter.h	1.25 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCGOFFStreamer.h	1.4 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInst.h	6.95 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstBuilder.h	2.03 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstPrinter.h	7.23 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstrAnalysis.h	8.26 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstrDesc.h	25.46 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstrInfo.h	3.04 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCInstrItineraries.h	9.4 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCLabel.h	1.63 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCLinkerOptimizationHint.h	5.69 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCMachObjectWriter.h	12.14 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCObjectFileInfo.h	18.9 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCObjectStreamer.h	8.96 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCObjectWriter.h	5.15 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCParser	-	drwxr-xr-x	2025-05-28 10:12:49	Del
MCPseudoProbe.h	15.31 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCRegister.h	4.65 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCRegisterInfo.h	27.5 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSPIRVObjectWriter.h	2.11 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSPIRVStreamer.h	1.65 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSchedule.h	16.81 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSection.h	5.85 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionCOFF.h	3.47 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionDXContainer.h	1.18 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionELF.h	3.93 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionGOFF.h	1.61 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionMachO.h	3.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionSPIRV.h	1.23 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionWasm.h	3.06 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSectionXCOFF.h	5.49 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCStreamer.h	46.71 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSubtargetInfo.h	12.46 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbol.h	13.97 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolCOFF.h	2.13 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolELF.h	1.55 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolGOFF.h	933 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolMachO.h	4.8 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolTableEntry.h	1.66 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolWasm.h	5.62 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCSymbolXCOFF.h	2.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCTargetOptions.h	3.5 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCTargetOptionsCommandFlags.h	1.54 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCValue.h	2.4 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWasmObjectWriter.h	1.89 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWasmStreamer.h	2.75 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWin64EH.h	2.7 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWinCOFFObjectWriter.h	3.23 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWinCOFFStreamer.h	3.25 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCWinEH.h	3.19 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCXCOFFObjectWriter.h	1.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MCXCOFFStreamer.h	2.04 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MachineLocation.h	2.04 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SectionKind.h	8.07 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
StringTableBuilder.h	2.57 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TargetRegistry.h	52.5 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del

Editing: MCLinkerOptimizationHint.h (5.69 KB)

//===- MCLinkerOptimizationHint.h - LOH interface ---------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file declares some helpers classes to handle Linker Optimization Hint
// (LOH).
//
// FIXME: LOH interface supports only MachO format at the moment.
//===----------------------------------------------------------------------===//

#ifndef LLVM_MC_MCLINKEROPTIMIZATIONHINT_H
#define LLVM_MC_MCLINKEROPTIMIZATIONHINT_H

#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include <cassert>
#include <cstdint>

namespace llvm {

class MachObjectWriter;
class MCAssembler;
class MCSymbol;
class raw_ostream;

/// Linker Optimization Hint Type.
enum MCLOHType {
  MCLOH_AdrpAdrp = 0x1u,      ///< Adrp xY, _v1@PAGE -> Adrp xY, _v2@PAGE.
  MCLOH_AdrpLdr = 0x2u,       ///< Adrp _v@PAGE -> Ldr _v@PAGEOFF.
  MCLOH_AdrpAddLdr = 0x3u,    ///< Adrp _v@PAGE -> Add _v@PAGEOFF -> Ldr.
  MCLOH_AdrpLdrGotLdr = 0x4u, ///< Adrp _v@GOTPAGE -> Ldr _v@GOTPAGEOFF -> Ldr.
  MCLOH_AdrpAddStr = 0x5u,    ///< Adrp _v@PAGE -> Add _v@PAGEOFF -> Str.
  MCLOH_AdrpLdrGotStr = 0x6u, ///< Adrp _v@GOTPAGE -> Ldr _v@GOTPAGEOFF -> Str.
  MCLOH_AdrpAdd = 0x7u,       ///< Adrp _v@PAGE -> Add _v@PAGEOFF.
  MCLOH_AdrpLdrGot = 0x8u     ///< Adrp _v@GOTPAGE -> Ldr _v@GOTPAGEOFF.
};

static inline StringRef MCLOHDirectiveName() {
  return StringRef(".loh");
}

static inline bool isValidMCLOHType(unsigned Kind) {
  return Kind >= MCLOH_AdrpAdrp && Kind <= MCLOH_AdrpLdrGot;
}

static inline int MCLOHNameToId(StringRef Name) {
#define MCLOHCaseNameToId(Name)     .Case(#Name, MCLOH_ ## Name)
  return StringSwitch<int>(Name)
    MCLOHCaseNameToId(AdrpAdrp)
    MCLOHCaseNameToId(AdrpLdr)
    MCLOHCaseNameToId(AdrpAddLdr)
    MCLOHCaseNameToId(AdrpLdrGotLdr)
    MCLOHCaseNameToId(AdrpAddStr)
    MCLOHCaseNameToId(AdrpLdrGotStr)
    MCLOHCaseNameToId(AdrpAdd)
    MCLOHCaseNameToId(AdrpLdrGot)
    .Default(-1);
#undef MCLOHCaseNameToId
}

static inline StringRef MCLOHIdToName(MCLOHType Kind) {
#define MCLOHCaseIdToName(Name)      case MCLOH_ ## Name: return StringRef(#Name);
  switch (Kind) {
    MCLOHCaseIdToName(AdrpAdrp);
    MCLOHCaseIdToName(AdrpLdr);
    MCLOHCaseIdToName(AdrpAddLdr);
    MCLOHCaseIdToName(AdrpLdrGotLdr);
    MCLOHCaseIdToName(AdrpAddStr);
    MCLOHCaseIdToName(AdrpLdrGotStr);
    MCLOHCaseIdToName(AdrpAdd);
    MCLOHCaseIdToName(AdrpLdrGot);
  }
  return StringRef();
#undef MCLOHCaseIdToName
}

static inline int MCLOHIdToNbArgs(MCLOHType Kind) {
  switch (Kind) {
    // LOH with two arguments
  case MCLOH_AdrpAdrp:
  case MCLOH_AdrpLdr:
  case MCLOH_AdrpAdd:
  case MCLOH_AdrpLdrGot:
    return 2;
    // LOH with three arguments
  case MCLOH_AdrpAddLdr:
  case MCLOH_AdrpLdrGotLdr:
  case MCLOH_AdrpAddStr:
  case MCLOH_AdrpLdrGotStr:
    return 3;
  }
  return -1;
}

/// Store Linker Optimization Hint information (LOH).
class MCLOHDirective {
  MCLOHType Kind;

  /// Arguments of this directive. Order matters.
  SmallVector<MCSymbol *, 3> Args;

  /// Emit this directive in \p OutStream using the information available
  /// in the given \p ObjWriter and \p Layout to get the address of the
  /// arguments within the object file.
  void emit_impl(const MCAssembler &Asm, raw_ostream &OutStream,
                 const MachObjectWriter &ObjWriter) const;

public:
  using LOHArgs = SmallVectorImpl<MCSymbol *>;

  MCLOHDirective(MCLOHType Kind, const LOHArgs &Args)
      : Kind(Kind), Args(Args.begin(), Args.end()) {
    assert(isValidMCLOHType(Kind) && "Invalid LOH directive type!");
  }

  MCLOHType getKind() const { return Kind; }

  const LOHArgs &getArgs() const { return Args; }

  /// Emit this directive as:
  /// <kind, numArgs, addr1, ..., addrN>
  void emit(const MCAssembler &Asm, MachObjectWriter &ObjWriter) const;

  /// Get the size in bytes of this directive if emitted in \p ObjWriter with
  /// the given \p Layout.
  uint64_t getEmitSize(const MCAssembler &Asm,
                       const MachObjectWriter &ObjWriter) const;
};

class MCLOHContainer {
  /// Keep track of the emit size of all the LOHs.
  mutable uint64_t EmitSize = 0;

  /// Keep track of all LOH directives.
  SmallVector<MCLOHDirective, 32> Directives;

public:
  using LOHDirectives = SmallVectorImpl<MCLOHDirective>;

  MCLOHContainer() = default;

  /// Const accessor to the directives.
  const LOHDirectives &getDirectives() const {
    return Directives;
  }

  /// Add the directive of the given kind \p Kind with the given arguments
  /// \p Args to the container.
  void addDirective(MCLOHType Kind, const MCLOHDirective::LOHArgs &Args) {
    Directives.push_back(MCLOHDirective(Kind, Args));
  }

  /// Get the size of the directives if emitted.
  uint64_t getEmitSize(const MCAssembler &Asm,
                       const MachObjectWriter &ObjWriter) const {
    if (!EmitSize) {
      for (const MCLOHDirective &D : Directives)
        EmitSize += D.getEmitSize(Asm, ObjWriter);
    }
    return EmitSize;
  }

  /// Emit all Linker Optimization Hint in one big table.
  /// Each line of the table is emitted by LOHDirective::emit.
  void emit(const MCAssembler &Asm, MachObjectWriter &ObjWriter) const {
    for (const MCLOHDirective &D : Directives)
      D.emit(Asm, ObjWriter);
  }

  void reset() {
    Directives.clear();
    EmitSize = 0;
  }
};

// Add types for specialized template using MCSymbol.
using MCLOHArgs = MCLOHDirective::LOHArgs;
using MCLOHDirectives = MCLOHContainer::LOHDirectives;

} // end namespace llvm

#endif // LLVM_MC_MCLINKEROPTIMIZATIONHINT_H