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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: MCRegisterInfo.cpp

//===- MC/MCRegisterInfo.cpp - Target Register Description ----------------===//
//
// 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 implements MCRegisterInfo functions.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/ErrorHandling.h"
#include <algorithm>
#include <cassert>
#include <cstdint>

using namespace llvm;

MCRegister
MCRegisterInfo::getMatchingSuperReg(MCRegister Reg, unsigned SubIdx,
                                    const MCRegisterClass *RC) const {
  for (MCSuperRegIterator Supers(Reg, this); Supers.isValid(); ++Supers)
    if (RC->contains(*Supers) && Reg == getSubReg(*Supers, SubIdx))
      return *Supers;
  return 0;
}

MCRegister MCRegisterInfo::getSubReg(MCRegister Reg, unsigned Idx) const {
  assert(Idx && Idx < getNumSubRegIndices() &&
         "This is not a subregister index");
  // Get a pointer to the corresponding SubRegIndices list. This list has the
  // name of each sub-register in the same order as MCSubRegIterator.
  const uint16_t *SRI = SubRegIndices + get(Reg).SubRegIndices;
  for (MCSubRegIterator Subs(Reg, this); Subs.isValid(); ++Subs, ++SRI)
    if (*SRI == Idx)
      return *Subs;
  return 0;
}

unsigned MCRegisterInfo::getSubRegIndex(MCRegister Reg,
                                        MCRegister SubReg) const {
  assert(SubReg && SubReg < getNumRegs() && "This is not a register");
  // Get a pointer to the corresponding SubRegIndices list. This list has the
  // name of each sub-register in the same order as MCSubRegIterator.
  const uint16_t *SRI = SubRegIndices + get(Reg).SubRegIndices;
  for (MCSubRegIterator Subs(Reg, this); Subs.isValid(); ++Subs, ++SRI)
    if (*Subs == SubReg)
      return *SRI;
  return 0;
}

unsigned MCRegisterInfo::getSubRegIdxSize(unsigned Idx) const {
  assert(Idx && Idx < getNumSubRegIndices() &&
         "This is not a subregister index");
  return SubRegIdxRanges[Idx].Size;
}

unsigned MCRegisterInfo::getSubRegIdxOffset(unsigned Idx) const {
  assert(Idx && Idx < getNumSubRegIndices() &&
         "This is not a subregister index");
  return SubRegIdxRanges[Idx].Offset;
}

int MCRegisterInfo::getDwarfRegNum(MCRegister RegNum, bool isEH) const {
  const DwarfLLVMRegPair *M = isEH ? EHL2DwarfRegs : L2DwarfRegs;
  unsigned Size = isEH ? EHL2DwarfRegsSize : L2DwarfRegsSize;

if (!M)
    return -1;
  DwarfLLVMRegPair Key = { RegNum, 0 };
  const DwarfLLVMRegPair *I = std::lower_bound(M, M+Size, Key);
  if (I == M+Size || I->FromReg != RegNum)
    return -1;
  return I->ToReg;
}

Optional<unsigned> MCRegisterInfo::getLLVMRegNum(unsigned RegNum,
                                                 bool isEH) const {
  const DwarfLLVMRegPair *M = isEH ? EHDwarf2LRegs : Dwarf2LRegs;
  unsigned Size = isEH ? EHDwarf2LRegsSize : Dwarf2LRegsSize;

if (!M)
    return None;
  DwarfLLVMRegPair Key = { RegNum, 0 };
  const DwarfLLVMRegPair *I = std::lower_bound(M, M+Size, Key);
  if (I != M + Size && I->FromReg == RegNum)
    return I->ToReg;
  return None;
}

int MCRegisterInfo::getDwarfRegNumFromDwarfEHRegNum(unsigned RegNum) const {
  // On ELF platforms, DWARF EH register numbers are the same as DWARF
  // other register numbers.  On Darwin x86, they differ and so need to be
  // mapped.  The .cfi_* directives accept integer literals as well as
  // register names and should generate exactly what the assembly code
  // asked for, so there might be DWARF/EH register numbers that don't have
  // a corresponding LLVM register number at all.  So if we can't map the
  // EH register number to an LLVM register number, assume it's just a
  // valid DWARF register number as is.
  if (Optional<unsigned> LRegNum = getLLVMRegNum(RegNum, true))
    return getDwarfRegNum(*LRegNum, false);
  return RegNum;
}

int MCRegisterInfo::getSEHRegNum(MCRegister RegNum) const {
  const DenseMap<MCRegister, int>::const_iterator I = L2SEHRegs.find(RegNum);
  if (I == L2SEHRegs.end()) return (int)RegNum;
  return I->second;
}

int MCRegisterInfo::getCodeViewRegNum(MCRegister RegNum) const {
  if (L2CVRegs.empty())
    report_fatal_error("target does not implement codeview register mapping");
  const DenseMap<MCRegister, int>::const_iterator I = L2CVRegs.find(RegNum);
  if (I == L2CVRegs.end())
    report_fatal_error("unknown codeview register " + (RegNum < getNumRegs()
                                                           ? getName(RegNum)
                                                           : Twine(RegNum)));
  return I->second;
}

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Editing: MCRegisterInfo.cpp

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