1 files changed, 0 insertions, 580 deletions

diff --git a/contrib/llvm/lib/CodeGen/StackMaps.cpp b/contrib/llvm/lib/CodeGen/StackMaps.cpp
deleted file mode 100644
index ae9401b89700..000000000000
--- a/contrib/llvm/lib/CodeGen/StackMaps.cpp
+++ /dev/null
@@ -1,580 +0,0 @@
-//===- StackMaps.cpp ------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/StackMaps.h"
-#include "llvm/ADT/DenseMapInfo.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineOperand.h"
-#include "llvm/CodeGen/TargetOpcodes.h"
-#include "llvm/CodeGen/TargetRegisterInfo.h"
-#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <cstdint>
-#include <iterator>
-#include <utility>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "stackmaps"
-
-static cl::opt<int> StackMapVersion(
-    "stackmap-version", cl::init(3), cl::Hidden,
-    cl::desc("Specify the stackmap encoding version (default = 3)"));
-
-const char *StackMaps::WSMP = "Stack Maps: ";
-
-StackMapOpers::StackMapOpers(const MachineInstr *MI)
-  : MI(MI) {
-  assert(getVarIdx() <= MI->getNumOperands() &&
-         "invalid stackmap definition");
-}
-
-PatchPointOpers::PatchPointOpers(const MachineInstr *MI)
-    : MI(MI), HasDef(MI->getOperand(0).isReg() && MI->getOperand(0).isDef() &&
-                     !MI->getOperand(0).isImplicit()) {
-#ifndef NDEBUG
-  unsigned CheckStartIdx = 0, e = MI->getNumOperands();
-  while (CheckStartIdx < e && MI->getOperand(CheckStartIdx).isReg() &&
-         MI->getOperand(CheckStartIdx).isDef() &&
-         !MI->getOperand(CheckStartIdx).isImplicit())
-    ++CheckStartIdx;
-
-  assert(getMetaIdx() == CheckStartIdx &&
-         "Unexpected additional definition in Patchpoint intrinsic.");
-#endif
-}
-
-unsigned PatchPointOpers::getNextScratchIdx(unsigned StartIdx) const {
-  if (!StartIdx)
-    StartIdx = getVarIdx();
-
-  // Find the next scratch register (implicit def and early clobber)
-  unsigned ScratchIdx = StartIdx, e = MI->getNumOperands();
-  while (ScratchIdx < e &&
-         !(MI->getOperand(ScratchIdx).isReg() &&
-           MI->getOperand(ScratchIdx).isDef() &&
-           MI->getOperand(ScratchIdx).isImplicit() &&
-           MI->getOperand(ScratchIdx).isEarlyClobber()))
-    ++ScratchIdx;
-
-  assert(ScratchIdx != e && "No scratch register available");
-  return ScratchIdx;
-}
-
-StackMaps::StackMaps(AsmPrinter &AP) : AP(AP) {
-  if (StackMapVersion != 3)
-    llvm_unreachable("Unsupported stackmap version!");
-}
-
-/// Go up the super-register chain until we hit a valid dwarf register number.
-static unsigned getDwarfRegNum(unsigned Reg, const TargetRegisterInfo *TRI) {
-  int RegNum = TRI->getDwarfRegNum(Reg, false);
-  for (MCSuperRegIterator SR(Reg, TRI); SR.isValid() && RegNum < 0; ++SR)
-    RegNum = TRI->getDwarfRegNum(*SR, false);
-
-  assert(RegNum >= 0 && "Invalid Dwarf register number.");
-  return (unsigned)RegNum;
-}
-
-MachineInstr::const_mop_iterator
-StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
-                        MachineInstr::const_mop_iterator MOE, LocationVec &Locs,
-                        LiveOutVec &LiveOuts) const {
-  const TargetRegisterInfo *TRI = AP.MF->getSubtarget().getRegisterInfo();
-  if (MOI->isImm()) {
-    switch (MOI->getImm()) {
-    default:
-      llvm_unreachable("Unrecognized operand type.");
-    case StackMaps::DirectMemRefOp: {
-      auto &DL = AP.MF->getDataLayout();
-
-      unsigned Size = DL.getPointerSizeInBits();
-      assert((Size % 8) == 0 && "Need pointer size in bytes.");
-      Size /= 8;
-      unsigned Reg = (++MOI)->getReg();
-      int64_t Imm = (++MOI)->getImm();
-      Locs.emplace_back(StackMaps::Location::Direct, Size,
-                        getDwarfRegNum(Reg, TRI), Imm);
-      break;
-    }
-    case StackMaps::IndirectMemRefOp: {
-      int64_t Size = (++MOI)->getImm();
-      assert(Size > 0 && "Need a valid size for indirect memory locations.");
-      unsigned Reg = (++MOI)->getReg();
-      int64_t Imm = (++MOI)->getImm();
-      Locs.emplace_back(StackMaps::Location::Indirect, Size,
-                        getDwarfRegNum(Reg, TRI), Imm);
-      break;
-    }
-    case StackMaps::ConstantOp: {
-      ++MOI;
-      assert(MOI->isImm() && "Expected constant operand.");
-      int64_t Imm = MOI->getImm();
-      Locs.emplace_back(Location::Constant, sizeof(int64_t), 0, Imm);
-      break;
-    }
-    }
-    return ++MOI;
-  }
-
-  // The physical register number will ultimately be encoded as a DWARF regno.
-  // The stack map also records the size of a spill slot that can hold the
-  // register content. (The runtime can track the actual size of the data type
-  // if it needs to.)
-  if (MOI->isReg()) {
-    // Skip implicit registers (this includes our scratch registers)
-    if (MOI->isImplicit())
-      return ++MOI;
-
-    assert(TargetRegisterInfo::isPhysicalRegister(MOI->getReg()) &&
-           "Virtreg operands should have been rewritten before now.");
-    const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(MOI->getReg());
-    assert(!MOI->getSubReg() && "Physical subreg still around.");
-
-    unsigned Offset = 0;
-    unsigned DwarfRegNum = getDwarfRegNum(MOI->getReg(), TRI);
-    unsigned LLVMRegNum = TRI->getLLVMRegNum(DwarfRegNum, false);
-    unsigned SubRegIdx = TRI->getSubRegIndex(LLVMRegNum, MOI->getReg());
-    if (SubRegIdx)
-      Offset = TRI->getSubRegIdxOffset(SubRegIdx);
-
-    Locs.emplace_back(Location::Register, TRI->getSpillSize(*RC),
-                      DwarfRegNum, Offset);
-    return ++MOI;
-  }
-
-  if (MOI->isRegLiveOut())
-    LiveOuts = parseRegisterLiveOutMask(MOI->getRegLiveOut());
-
-  return ++MOI;
-}
-
-void StackMaps::print(raw_ostream &OS) {
-  const TargetRegisterInfo *TRI =
-      AP.MF ? AP.MF->getSubtarget().getRegisterInfo() : nullptr;
-  OS << WSMP << "callsites:\n";
-  for (const auto &CSI : CSInfos) {
-    const LocationVec &CSLocs = CSI.Locations;
-    const LiveOutVec &LiveOuts = CSI.LiveOuts;
-
-    OS << WSMP << "callsite " << CSI.ID << "\n";
-    OS << WSMP << "  has " << CSLocs.size() << " locations\n";
-
-    unsigned Idx = 0;
-    for (const auto &Loc : CSLocs) {
-      OS << WSMP << "\t\tLoc " << Idx << ": ";
-      switch (Loc.Type) {
-      case Location::Unprocessed:
-        OS << "<Unprocessed operand>";
-        break;
-      case Location::Register:
-        OS << "Register ";
-        if (TRI)
-          OS << printReg(Loc.Reg, TRI);
-        else
-          OS << Loc.Reg;
-        break;
-      case Location::Direct:
-        OS << "Direct ";
-        if (TRI)
-          OS << printReg(Loc.Reg, TRI);
-        else
-          OS << Loc.Reg;
-        if (Loc.Offset)
-          OS << " + " << Loc.Offset;
-        break;
-      case Location::Indirect:
-        OS << "Indirect ";
-        if (TRI)
-          OS << printReg(Loc.Reg, TRI);
-        else
-          OS << Loc.Reg;
-        OS << "+" << Loc.Offset;
-        break;
-      case Location::Constant:
-        OS << "Constant " << Loc.Offset;
-        break;
-      case Location::ConstantIndex:
-        OS << "Constant Index " << Loc.Offset;
-        break;
-      }
-      OS << "\t[encoding: .byte " << Loc.Type << ", .byte 0"
-         << ", .short " << Loc.Size << ", .short " << Loc.Reg << ", .short 0"
-         << ", .int " << Loc.Offset << "]\n";
-      Idx++;
-    }
-
-    OS << WSMP << "\thas " << LiveOuts.size() << " live-out registers\n";
-
-    Idx = 0;
-    for (const auto &LO : LiveOuts) {
-      OS << WSMP << "\t\tLO " << Idx << ": ";
-      if (TRI)
-        OS << printReg(LO.Reg, TRI);
-      else
-        OS << LO.Reg;
-      OS << "\t[encoding: .short " << LO.DwarfRegNum << ", .byte 0, .byte "
-         << LO.Size << "]\n";
-      Idx++;
-    }
-  }
-}
-
-/// Create a live-out register record for the given register Reg.
-StackMaps::LiveOutReg
-StackMaps::createLiveOutReg(unsigned Reg, const TargetRegisterInfo *TRI) const {
-  unsigned DwarfRegNum = getDwarfRegNum(Reg, TRI);
-  unsigned Size = TRI->getSpillSize(*TRI->getMinimalPhysRegClass(Reg));
-  return LiveOutReg(Reg, DwarfRegNum, Size);
-}
-
-/// Parse the register live-out mask and return a vector of live-out registers
-/// that need to be recorded in the stackmap.
-StackMaps::LiveOutVec
-StackMaps::parseRegisterLiveOutMask(const uint32_t *Mask) const {
-  assert(Mask && "No register mask specified");
-  const TargetRegisterInfo *TRI = AP.MF->getSubtarget().getRegisterInfo();
-  LiveOutVec LiveOuts;
-
-  // Create a LiveOutReg for each bit that is set in the register mask.
-  for (unsigned Reg = 0, NumRegs = TRI->getNumRegs(); Reg != NumRegs; ++Reg)
-    if ((Mask[Reg / 32] >> Reg % 32) & 1)
-      LiveOuts.push_back(createLiveOutReg(Reg, TRI));
-
-  // We don't need to keep track of a register if its super-register is already
-  // in the list. Merge entries that refer to the same dwarf register and use
-  // the maximum size that needs to be spilled.
-
-  llvm::sort(LiveOuts, [](const LiveOutReg &LHS, const LiveOutReg &RHS) {
-    // Only sort by the dwarf register number.
-    return LHS.DwarfRegNum < RHS.DwarfRegNum;
-  });
-
-  for (auto I = LiveOuts.begin(), E = LiveOuts.end(); I != E; ++I) {
-    for (auto II = std::next(I); II != E; ++II) {
-      if (I->DwarfRegNum != II->DwarfRegNum) {
-        // Skip all the now invalid entries.
-        I = --II;
-        break;
-      }
-      I->Size = std::max(I->Size, II->Size);
-      if (TRI->isSuperRegister(I->Reg, II->Reg))
-        I->Reg = II->Reg;
-      II->Reg = 0; // mark for deletion.
-    }
-  }
-
-  LiveOuts.erase(
-      llvm::remove_if(LiveOuts,
-                      [](const LiveOutReg &LO) { return LO.Reg == 0; }),
-      LiveOuts.end());
-
-  return LiveOuts;
-}
-
-void StackMaps::recordStackMapOpers(const MachineInstr &MI, uint64_t ID,
-                                    MachineInstr::const_mop_iterator MOI,
-                                    MachineInstr::const_mop_iterator MOE,
-                                    bool recordResult) {
-  MCContext &OutContext = AP.OutStreamer->getContext();
-  MCSymbol *MILabel = OutContext.createTempSymbol();
-  AP.OutStreamer->EmitLabel(MILabel);
-
-  LocationVec Locations;
-  LiveOutVec LiveOuts;
-
-  if (recordResult) {
-    assert(PatchPointOpers(&MI).hasDef() && "Stackmap has no return value.");
-    parseOperand(MI.operands_begin(), std::next(MI.operands_begin()), Locations,
-                 LiveOuts);
-  }
-
-  // Parse operands.
-  while (MOI != MOE) {
-    MOI = parseOperand(MOI, MOE, Locations, LiveOuts);
-  }
-
-  // Move large constants into the constant pool.
-  for (auto &Loc : Locations) {
-    // Constants are encoded as sign-extended integers.
-    // -1 is directly encoded as .long 0xFFFFFFFF with no constant pool.
-    if (Loc.Type == Location::Constant && !isInt<32>(Loc.Offset)) {
-      Loc.Type = Location::ConstantIndex;
-      // ConstPool is intentionally a MapVector of 'uint64_t's (as
-      // opposed to 'int64_t's).  We should never be in a situation
-      // where we have to insert either the tombstone or the empty
-      // keys into a map, and for a DenseMap<uint64_t, T> these are
-      // (uint64_t)0 and (uint64_t)-1.  They can be and are
-      // represented using 32 bit integers.
-      assert((uint64_t)Loc.Offset != DenseMapInfo<uint64_t>::getEmptyKey() &&
-             (uint64_t)Loc.Offset !=
-                 DenseMapInfo<uint64_t>::getTombstoneKey() &&
-             "empty and tombstone keys should fit in 32 bits!");
-      auto Result = ConstPool.insert(std::make_pair(Loc.Offset, Loc.Offset));
-      Loc.Offset = Result.first - ConstPool.begin();
-    }
-  }
-
-  // Create an expression to calculate the offset of the callsite from function
-  // entry.
-  const MCExpr *CSOffsetExpr = MCBinaryExpr::createSub(
-      MCSymbolRefExpr::create(MILabel, OutContext),
-      MCSymbolRefExpr::create(AP.CurrentFnSymForSize, OutContext), OutContext);
-
-  CSInfos.emplace_back(CSOffsetExpr, ID, std::move(Locations),
-                       std::move(LiveOuts));
-
-  // Record the stack size of the current function and update callsite count.
-  const MachineFrameInfo &MFI = AP.MF->getFrameInfo();
-  const TargetRegisterInfo *RegInfo = AP.MF->getSubtarget().getRegisterInfo();
-  bool HasDynamicFrameSize =
-      MFI.hasVarSizedObjects() || RegInfo->needsStackRealignment(*(AP.MF));
-  uint64_t FrameSize = HasDynamicFrameSize ? UINT64_MAX : MFI.getStackSize();
-
-  auto CurrentIt = FnInfos.find(AP.CurrentFnSym);
-  if (CurrentIt != FnInfos.end())
-    CurrentIt->second.RecordCount++;
-  else
-    FnInfos.insert(std::make_pair(AP.CurrentFnSym, FunctionInfo(FrameSize)));
-}
-
-void StackMaps::recordStackMap(const MachineInstr &MI) {
-  assert(MI.getOpcode() == TargetOpcode::STACKMAP && "expected stackmap");
-
-  StackMapOpers opers(&MI);
-  const int64_t ID = MI.getOperand(PatchPointOpers::IDPos).getImm();
-  recordStackMapOpers(MI, ID, std::next(MI.operands_begin(), opers.getVarIdx()),
-                      MI.operands_end());
-}
-
-void StackMaps::recordPatchPoint(const MachineInstr &MI) {
-  assert(MI.getOpcode() == TargetOpcode::PATCHPOINT && "expected patchpoint");
-
-  PatchPointOpers opers(&MI);
-  const int64_t ID = opers.getID();
-  auto MOI = std::next(MI.operands_begin(), opers.getStackMapStartIdx());
-  recordStackMapOpers(MI, ID, MOI, MI.operands_end(),
-                      opers.isAnyReg() && opers.hasDef());
-
-#ifndef NDEBUG
-  // verify anyregcc
-  auto &Locations = CSInfos.back().Locations;
-  if (opers.isAnyReg()) {
-    unsigned NArgs = opers.getNumCallArgs();
-    for (unsigned i = 0, e = (opers.hasDef() ? NArgs + 1 : NArgs); i != e; ++i)
-      assert(Locations[i].Type == Location::Register &&
-             "anyreg arg must be in reg.");
-  }
-#endif
-}
-
-void StackMaps::recordStatepoint(const MachineInstr &MI) {
-  assert(MI.getOpcode() == TargetOpcode::STATEPOINT && "expected statepoint");
-
-  StatepointOpers opers(&MI);
-  // Record all the deopt and gc operands (they're contiguous and run from the
-  // initial index to the end of the operand list)
-  const unsigned StartIdx = opers.getVarIdx();
-  recordStackMapOpers(MI, opers.getID(), MI.operands_begin() + StartIdx,
-                      MI.operands_end(), false);
-}
-
-/// Emit the stackmap header.
-///
-/// Header {
-///   uint8  : Stack Map Version (currently 2)
-///   uint8  : Reserved (expected to be 0)
-///   uint16 : Reserved (expected to be 0)
-/// }
-/// uint32 : NumFunctions
-/// uint32 : NumConstants
-/// uint32 : NumRecords
-void StackMaps::emitStackmapHeader(MCStreamer &OS) {
-  // Header.
-  OS.EmitIntValue(StackMapVersion, 1); // Version.
-  OS.EmitIntValue(0, 1);               // Reserved.
-  OS.EmitIntValue(0, 2);               // Reserved.
-
-  // Num functions.
-  LLVM_DEBUG(dbgs() << WSMP << "#functions = " << FnInfos.size() << '\n');
-  OS.EmitIntValue(FnInfos.size(), 4);
-  // Num constants.
-  LLVM_DEBUG(dbgs() << WSMP << "#constants = " << ConstPool.size() << '\n');
-  OS.EmitIntValue(ConstPool.size(), 4);
-  // Num callsites.
-  LLVM_DEBUG(dbgs() << WSMP << "#callsites = " << CSInfos.size() << '\n');
-  OS.EmitIntValue(CSInfos.size(), 4);
-}
-
-/// Emit the function frame record for each function.
-///
-/// StkSizeRecord[NumFunctions] {
-///   uint64 : Function Address
-///   uint64 : Stack Size
-///   uint64 : Record Count
-/// }
-void StackMaps::emitFunctionFrameRecords(MCStreamer &OS) {
-  // Function Frame records.
-  LLVM_DEBUG(dbgs() << WSMP << "functions:\n");
-  for (auto const &FR : FnInfos) {
-    LLVM_DEBUG(dbgs() << WSMP << "function addr: " << FR.first
-                      << " frame size: " << FR.second.StackSize
-                      << " callsite count: " << FR.second.RecordCount << '\n');
-    OS.EmitSymbolValue(FR.first, 8);
-    OS.EmitIntValue(FR.second.StackSize, 8);
-    OS.EmitIntValue(FR.second.RecordCount, 8);
-  }
-}
-
-/// Emit the constant pool.
-///
-/// int64  : Constants[NumConstants]
-void StackMaps::emitConstantPoolEntries(MCStreamer &OS) {
-  // Constant pool entries.
-  LLVM_DEBUG(dbgs() << WSMP << "constants:\n");
-  for (const auto &ConstEntry : ConstPool) {
-    LLVM_DEBUG(dbgs() << WSMP << ConstEntry.second << '\n');
-    OS.EmitIntValue(ConstEntry.second, 8);
-  }
-}
-
-/// Emit the callsite info for each callsite.
-///
-/// StkMapRecord[NumRecords] {
-///   uint64 : PatchPoint ID
-///   uint32 : Instruction Offset
-///   uint16 : Reserved (record flags)
-///   uint16 : NumLocations
-///   Location[NumLocations] {
-///     uint8  : Register | Direct | Indirect | Constant | ConstantIndex
-///     uint8  : Size in Bytes
-///     uint16 : Dwarf RegNum
-///     int32  : Offset
-///   }
-///   uint16 : Padding
-///   uint16 : NumLiveOuts
-///   LiveOuts[NumLiveOuts] {
-///     uint16 : Dwarf RegNum
-///     uint8  : Reserved
-///     uint8  : Size in Bytes
-///   }
-///   uint32 : Padding (only if required to align to 8 byte)
-/// }
-///
-/// Location Encoding, Type, Value:
-///   0x1, Register, Reg                 (value in register)
-///   0x2, Direct, Reg + Offset          (frame index)
-///   0x3, Indirect, [Reg + Offset]      (spilled value)
-///   0x4, Constant, Offset              (small constant)
-///   0x5, ConstIndex, Constants[Offset] (large constant)
-void StackMaps::emitCallsiteEntries(MCStreamer &OS) {
-  LLVM_DEBUG(print(dbgs()));
-  // Callsite entries.
-  for (const auto &CSI : CSInfos) {
-    const LocationVec &CSLocs = CSI.Locations;
-    const LiveOutVec &LiveOuts = CSI.LiveOuts;
-
-    // Verify stack map entry. It's better to communicate a problem to the
-    // runtime than crash in case of in-process compilation. Currently, we do
-    // simple overflow checks, but we may eventually communicate other
-    // compilation errors this way.
-    if (CSLocs.size() > UINT16_MAX || LiveOuts.size() > UINT16_MAX) {
-      OS.EmitIntValue(UINT64_MAX, 8); // Invalid ID.
-      OS.EmitValue(CSI.CSOffsetExpr, 4);
-      OS.EmitIntValue(0, 2); // Reserved.
-      OS.EmitIntValue(0, 2); // 0 locations.
-      OS.EmitIntValue(0, 2); // padding.
-      OS.EmitIntValue(0, 2); // 0 live-out registers.
-      OS.EmitIntValue(0, 4); // padding.
-      continue;
-    }
-
-    OS.EmitIntValue(CSI.ID, 8);
-    OS.EmitValue(CSI.CSOffsetExpr, 4);
-
-    // Reserved for flags.
-    OS.EmitIntValue(0, 2);
-    OS.EmitIntValue(CSLocs.size(), 2);
-
-    for (const auto &Loc : CSLocs) {
-      OS.EmitIntValue(Loc.Type, 1);
-      OS.EmitIntValue(0, 1);  // Reserved
-      OS.EmitIntValue(Loc.Size, 2);
-      OS.EmitIntValue(Loc.Reg, 2);
-      OS.EmitIntValue(0, 2);  // Reserved
-      OS.EmitIntValue(Loc.Offset, 4);
-    }
-
-    // Emit alignment to 8 byte.
-    OS.EmitValueToAlignment(8);
-
-    // Num live-out registers and padding to align to 4 byte.
-    OS.EmitIntValue(0, 2);
-    OS.EmitIntValue(LiveOuts.size(), 2);
-
-    for (const auto &LO : LiveOuts) {
-      OS.EmitIntValue(LO.DwarfRegNum, 2);
-      OS.EmitIntValue(0, 1);
-      OS.EmitIntValue(LO.Size, 1);
-    }
-    // Emit alignment to 8 byte.
-    OS.EmitValueToAlignment(8);
-  }
-}
-
-/// Serialize the stackmap data.
-void StackMaps::serializeToStackMapSection() {
-  (void)WSMP;
-  // Bail out if there's no stack map data.
-  assert((!CSInfos.empty() || ConstPool.empty()) &&
-         "Expected empty constant pool too!");
-  assert((!CSInfos.empty() || FnInfos.empty()) &&
-         "Expected empty function record too!");
-  if (CSInfos.empty())
-    return;
-
-  MCContext &OutContext = AP.OutStreamer->getContext();
-  MCStreamer &OS = *AP.OutStreamer;
-
-  // Create the section.
-  MCSection *StackMapSection =
-      OutContext.getObjectFileInfo()->getStackMapSection();
-  OS.SwitchSection(StackMapSection);
-
-  // Emit a dummy symbol to force section inclusion.
-  OS.EmitLabel(OutContext.getOrCreateSymbol(Twine("__LLVM_StackMaps")));
-
-  // Serialize data.
-  LLVM_DEBUG(dbgs() << "********** Stack Map Output **********\n");
-  emitStackmapHeader(OS);
-  emitFunctionFrameRecords(OS);
-  emitConstantPoolEntries(OS);
-  emitCallsiteEntries(OS);
-  OS.AddBlankLine();
-
-  // Clean up.
-  CSInfos.clear();
-  ConstPool.clear();
-}