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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: ConstantPools.cpp

//===- ConstantPools.cpp - ConstantPool class -----------------------------===//
//
// 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 the ConstantPool and  AssemblerConstantPools classes.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/ConstantPools.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/Casting.h"

using namespace llvm;

//
// ConstantPool implementation
//
// Emit the contents of the constant pool using the provided streamer.
void ConstantPool::emitEntries(MCStreamer &Streamer) {
  if (Entries.empty())
    return;
  Streamer.emitDataRegion(MCDR_DataRegion);
  for (const ConstantPoolEntry &Entry : Entries) {
    Streamer.emitCodeAlignment(Entry.Size); // align naturally
    Streamer.emitLabel(Entry.Label);
    Streamer.emitValue(Entry.Value, Entry.Size, Entry.Loc);
  }
  Streamer.emitDataRegion(MCDR_DataRegionEnd);
  Entries.clear();
}

const MCExpr *ConstantPool::addEntry(const MCExpr *Value, MCContext &Context,
                                     unsigned Size, SMLoc Loc) {
  const MCConstantExpr *C = dyn_cast<MCConstantExpr>(Value);

// Check if there is existing entry for the same constant. If so, reuse it.
  auto Itr = C ? CachedEntries.find(C->getValue()) : CachedEntries.end();
  if (Itr != CachedEntries.end())
    return Itr->second;

MCSymbol *CPEntryLabel = Context.createTempSymbol();

Entries.push_back(ConstantPoolEntry(CPEntryLabel, Value, Size, Loc));
  const auto SymRef = MCSymbolRefExpr::create(CPEntryLabel, Context);
  if (C)
    CachedEntries[C->getValue()] = SymRef;
  return SymRef;
}

bool ConstantPool::empty() { return Entries.empty(); }

void ConstantPool::clearCache() {
  CachedEntries.clear();
}

//
// AssemblerConstantPools implementation
//
ConstantPool *AssemblerConstantPools::getConstantPool(MCSection *Section) {
  ConstantPoolMapTy::iterator CP = ConstantPools.find(Section);
  if (CP == ConstantPools.end())
    return nullptr;

return &CP->second;
}

ConstantPool &
AssemblerConstantPools::getOrCreateConstantPool(MCSection *Section) {
  return ConstantPools[Section];
}

static void emitConstantPool(MCStreamer &Streamer, MCSection *Section,
                             ConstantPool &CP) {
  if (!CP.empty()) {
    Streamer.SwitchSection(Section);
    CP.emitEntries(Streamer);
  }
}

void AssemblerConstantPools::emitAll(MCStreamer &Streamer) {
  // Dump contents of assembler constant pools.
  for (auto &CPI : ConstantPools) {
    MCSection *Section = CPI.first;
    ConstantPool &CP = CPI.second;

emitConstantPool(Streamer, Section, CP);
  }
}

void AssemblerConstantPools::emitForCurrentSection(MCStreamer &Streamer) {
  MCSection *Section = Streamer.getCurrentSectionOnly();
  if (ConstantPool *CP = getConstantPool(Section))
    emitConstantPool(Streamer, Section, *CP);
}

void AssemblerConstantPools::clearCacheForCurrentSection(MCStreamer &Streamer) {
  MCSection *Section = Streamer.getCurrentSectionOnly();
  if (ConstantPool *CP = getConstantPool(Section))
    CP->clearCache();
}

const MCExpr *AssemblerConstantPools::addEntry(MCStreamer &Streamer,
                                               const MCExpr *Expr,
                                               unsigned Size, SMLoc Loc) {
  MCSection *Section = Streamer.getCurrentSectionOnly();
  return getOrCreateConstantPool(Section).addEntry(Expr, Streamer.getContext(),
                                                   Size, Loc);
}

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Editing: ConstantPools.cpp

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