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📁 ..
📄 ConstantPools.cpp(3.72 KB)
📄 ELFObjectWriter.cpp(51.58 KB)
📄 MCAsmBackend.cpp(4.01 KB)
📄 MCAsmInfo.cpp(4.44 KB)
📄 MCAsmInfoCOFF.cpp(2.17 KB)
📄 MCAsmInfoDarwin.cpp(3.01 KB)
📄 MCAsmInfoELF.cpp(1.05 KB)
📄 MCAsmInfoWasm.cpp(853 B)
📄 MCAsmInfoXCOFF.cpp(1.63 KB)
📄 MCAsmMacro.cpp(1.12 KB)
📄 MCAsmStreamer.cpp(68.69 KB)
📄 MCAssembler.cpp(42.61 KB)
📄 MCCodeEmitter.cpp(515 B)
📄 MCCodeView.cpp(25.49 KB)
📄 MCContext.cpp(31.94 KB)
📁 MCDisassembler
📄 MCDwarf.cpp(71.58 KB)
📄 MCELFObjectTargetWriter.cpp(1.29 KB)
📄 MCELFStreamer.cpp(24.89 KB)
📄 MCExpr.cpp(34.06 KB)
📄 MCFragment.cpp(15.28 KB)
📄 MCInst.cpp(2.6 KB)
📄 MCInstPrinter.cpp(7.87 KB)
📄 MCInstrAnalysis.cpp(1.2 KB)
📄 MCInstrDesc.cpp(1.96 KB)
📄 MCInstrInfo.cpp(1.03 KB)
📄 MCLabel.cpp(772 B)
📄 MCLinkerOptimizationHint.cpp(2.03 KB)
📄 MCMachOStreamer.cpp(18.55 KB)
📄 MCMachObjectTargetWriter.cpp(780 B)
📄 MCNullStreamer.cpp(1.61 KB)
📄 MCObjectFileInfo.cpp(39.55 KB)
📄 MCObjectStreamer.cpp(28.26 KB)
📄 MCObjectWriter.cpp(1.82 KB)
📁 MCParser
📄 MCRegisterInfo.cpp(4.76 KB)
📄 MCSchedule.cpp(6.15 KB)
📄 MCSection.cpp(4.41 KB)
📄 MCSectionCOFF.cpp(3.52 KB)
📄 MCSectionELF.cpp(5.29 KB)
📄 MCSectionMachO.cpp(10.84 KB)
📄 MCSectionWasm.cpp(2.45 KB)
📄 MCSectionXCOFF.cpp(2.46 KB)
📄 MCStreamer.cpp(42.97 KB)
📄 MCSubtargetInfo.cpp(11.35 KB)
📄 MCSymbol.cpp(2.98 KB)
📄 MCSymbolELF.cpp(4.69 KB)
📄 MCSymbolXCOFF.cpp(1.73 KB)
📄 MCTargetOptions.cpp(990 B)
📄 MCTargetOptionsCommandFlags.cpp(4.42 KB)
📄 MCValue.cpp(1.42 KB)
📄 MCWasmObjectTargetWriter.cpp(727 B)
📄 MCWasmStreamer.cpp(7.59 KB)
📄 MCWin64EH.cpp(22.87 KB)
📄 MCWinCOFFStreamer.cpp(11.94 KB)
📄 MCWinEH.cpp(711 B)
📄 MCXCOFFObjectTargetWriter.cpp(596 B)
📄 MCXCOFFStreamer.cpp(4.87 KB)
📄 MachObjectWriter.cpp(37.79 KB)
📄 StringTableBuilder.cpp(5.26 KB)
📄 SubtargetFeature.cpp(2.6 KB)
📄 WasmObjectWriter.cpp(60.42 KB)
📄 WinCOFFObjectWriter.cpp(39.32 KB)
📄 XCOFFObjectWriter.cpp(31.62 KB)

Editing: SubtargetFeature.cpp

//===- SubtargetFeature.cpp - CPU characteristics Implementation ----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
/// \file Implements the SubtargetFeature interface.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/SubtargetFeature.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstring>
#include <iterator>
#include <string>
#include <vector>

using namespace llvm;

/// Splits a string of comma separated items in to a vector of strings.
void SubtargetFeatures::Split(std::vector<std::string> &V, StringRef S) {
  SmallVector<StringRef, 3> Tmp;
  S.split(Tmp, ',', -1, false /* KeepEmpty */);
  V.reserve(Tmp.size());
  for (StringRef T : Tmp)
    V.push_back(std::string(T));
}

void SubtargetFeatures::AddFeature(StringRef String, bool Enable) {
  // Don't add empty features.
  if (!String.empty())
    // Convert to lowercase, prepend flag if we don't already have a flag.
    Features.push_back(hasFlag(String) ? String.lower()
                                       : (Enable ? "+" : "-") + String.lower());
}

SubtargetFeatures::SubtargetFeatures(StringRef Initial) {
  // Break up string into separate features
  Split(Features, Initial);
}

std::string SubtargetFeatures::getString() const {
  return join(Features.begin(), Features.end(), ",");
}

void SubtargetFeatures::print(raw_ostream &OS) const {
  for (auto &F : Features)
    OS << F << " ";
  OS << "\n";
}

#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void SubtargetFeatures::dump() const {
  print(dbgs());
}
#endif

void SubtargetFeatures::getDefaultSubtargetFeatures(const Triple& Triple) {
  // FIXME: This is an inelegant way of specifying the features of a
  // subtarget. It would be better if we could encode this information
  // into the IR. See <rdar://5972456>.
  if (Triple.getVendor() == Triple::Apple) {
    if (Triple.getArch() == Triple::ppc) {
      // powerpc-apple-*
      AddFeature("altivec");
    } else if (Triple.getArch() == Triple::ppc64) {
      // powerpc64-apple-*
      AddFeature("64bit");
      AddFeature("altivec");
    }
  }
}

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Editing: SubtargetFeature.cpp

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