Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 1039 deletions

diff --git a/gnu/llvm/lib/ProfileData/SampleProfReader.cpp b/gnu/llvm/lib/ProfileData/SampleProfReader.cpp
deleted file mode 100644
index a68d1e9d3ab..00000000000
--- a/gnu/llvm/lib/ProfileData/SampleProfReader.cpp
+++ /dev/null
@@ -1,1039 +0,0 @@
-//===- SampleProfReader.cpp - Read LLVM sample profile data ---------------===//
-//
-//                      The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the class that reads LLVM sample profiles. It
-// supports three file formats: text, binary and gcov.
-//
-// The textual representation is useful for debugging and testing purposes. The
-// binary representation is more compact, resulting in smaller file sizes.
-//
-// The gcov encoding is the one generated by GCC's AutoFDO profile creation
-// tool (https://github.com/google/autofdo)
-//
-// All three encodings can be used interchangeably as an input sample profile.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ProfileData/SampleProfReader.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/IR/ProfileSummary.h"
-#include "llvm/ProfileData/ProfileCommon.h"
-#include "llvm/ProfileData/SampleProf.h"
-#include "llvm/Support/ErrorOr.h"
-#include "llvm/Support/LEB128.h"
-#include "llvm/Support/LineIterator.h"
-#include "llvm/Support/MD5.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cstddef>
-#include <cstdint>
-#include <limits>
-#include <memory>
-#include <system_error>
-#include <vector>
-
-using namespace llvm;
-using namespace sampleprof;
-
-/// Dump the function profile for \p FName.
-///
-/// \param FName Name of the function to print.
-/// \param OS Stream to emit the output to.
-void SampleProfileReader::dumpFunctionProfile(StringRef FName,
-                                              raw_ostream &OS) {
-  OS << "Function: " << FName << ": " << Profiles[FName];
-}
-
-/// Dump all the function profiles found on stream \p OS.
-void SampleProfileReader::dump(raw_ostream &OS) {
-  for (const auto &I : Profiles)
-    dumpFunctionProfile(I.getKey(), OS);
-}
-
-/// Parse \p Input as function head.
-///
-/// Parse one line of \p Input, and update function name in \p FName,
-/// function's total sample count in \p NumSamples, function's entry
-/// count in \p NumHeadSamples.
-///
-/// \returns true if parsing is successful.
-static bool ParseHead(const StringRef &Input, StringRef &FName,
-                      uint64_t &NumSamples, uint64_t &NumHeadSamples) {
-  if (Input[0] == ' ')
-    return false;
-  size_t n2 = Input.rfind(':');
-  size_t n1 = Input.rfind(':', n2 - 1);
-  FName = Input.substr(0, n1);
-  if (Input.substr(n1 + 1, n2 - n1 - 1).getAsInteger(10, NumSamples))
-    return false;
-  if (Input.substr(n2 + 1).getAsInteger(10, NumHeadSamples))
-    return false;
-  return true;
-}
-
-/// Returns true if line offset \p L is legal (only has 16 bits).
-static bool isOffsetLegal(unsigned L) { return (L & 0xffff) == L; }
-
-/// Parse \p Input as line sample.
-///
-/// \param Input input line.
-/// \param IsCallsite true if the line represents an inlined callsite.
-/// \param Depth the depth of the inline stack.
-/// \param NumSamples total samples of the line/inlined callsite.
-/// \param LineOffset line offset to the start of the function.
-/// \param Discriminator discriminator of the line.
-/// \param TargetCountMap map from indirect call target to count.
-///
-/// returns true if parsing is successful.
-static bool ParseLine(const StringRef &Input, bool &IsCallsite, uint32_t &Depth,
-                      uint64_t &NumSamples, uint32_t &LineOffset,
-                      uint32_t &Discriminator, StringRef &CalleeName,
-                      DenseMap<StringRef, uint64_t> &TargetCountMap) {
-  for (Depth = 0; Input[Depth] == ' '; Depth++)
-    ;
-  if (Depth == 0)
-    return false;
-
-  size_t n1 = Input.find(':');
-  StringRef Loc = Input.substr(Depth, n1 - Depth);
-  size_t n2 = Loc.find('.');
-  if (n2 == StringRef::npos) {
-    if (Loc.getAsInteger(10, LineOffset) || !isOffsetLegal(LineOffset))
-      return false;
-    Discriminator = 0;
-  } else {
-    if (Loc.substr(0, n2).getAsInteger(10, LineOffset))
-      return false;
-    if (Loc.substr(n2 + 1).getAsInteger(10, Discriminator))
-      return false;
-  }
-
-  StringRef Rest = Input.substr(n1 + 2);
-  if (Rest[0] >= '0' && Rest[0] <= '9') {
-    IsCallsite = false;
-    size_t n3 = Rest.find(' ');
-    if (n3 == StringRef::npos) {
-      if (Rest.getAsInteger(10, NumSamples))
-        return false;
-    } else {
-      if (Rest.substr(0, n3).getAsInteger(10, NumSamples))
-        return false;
-    }
-    // Find call targets and their sample counts.
-    // Note: In some cases, there are symbols in the profile which are not
-    // mangled. To accommodate such cases, use colon + integer pairs as the
-    // anchor points.
-    // An example:
-    // _M_construct<char *>:1000 string_view<std::allocator<char> >:437
-    // ":1000" and ":437" are used as anchor points so the string above will
-    // be interpreted as
-    // target: _M_construct<char *>
-    // count: 1000
-    // target: string_view<std::allocator<char> >
-    // count: 437
-    while (n3 != StringRef::npos) {
-      n3 += Rest.substr(n3).find_first_not_of(' ');
-      Rest = Rest.substr(n3);
-      n3 = Rest.find_first_of(':');
-      if (n3 == StringRef::npos || n3 == 0)
-        return false;
-
-      StringRef Target;
-      uint64_t count, n4;
-      while (true) {
-        // Get the segment after the current colon.
-        StringRef AfterColon = Rest.substr(n3 + 1);
-        // Get the target symbol before the current colon.
-        Target = Rest.substr(0, n3);
-        // Check if the word after the current colon is an integer.
-        n4 = AfterColon.find_first_of(' ');
-        n4 = (n4 != StringRef::npos) ? n3 + n4 + 1 : Rest.size();
-        StringRef WordAfterColon = Rest.substr(n3 + 1, n4 - n3 - 1);
-        if (!WordAfterColon.getAsInteger(10, count))
-          break;
-
-        // Try to find the next colon.
-        uint64_t n5 = AfterColon.find_first_of(':');
-        if (n5 == StringRef::npos)
-          return false;
-        n3 += n5 + 1;
-      }
-
-      // An anchor point is found. Save the {target, count} pair
-      TargetCountMap[Target] = count;
-      if (n4 == Rest.size())
-        break;
-      // Change n3 to the next blank space after colon + integer pair.
-      n3 = n4;
-    }
-  } else {
-    IsCallsite = true;
-    size_t n3 = Rest.find_last_of(':');
-    CalleeName = Rest.substr(0, n3);
-    if (Rest.substr(n3 + 1).getAsInteger(10, NumSamples))
-      return false;
-  }
-  return true;
-}
-
-/// Load samples from a text file.
-///
-/// See the documentation at the top of the file for an explanation of
-/// the expected format.
-///
-/// \returns true if the file was loaded successfully, false otherwise.
-std::error_code SampleProfileReaderText::read() {
-  line_iterator LineIt(*Buffer, /*SkipBlanks=*/true, '#');
-  sampleprof_error Result = sampleprof_error::success;
-
-  InlineCallStack InlineStack;
-
-  for (; !LineIt.is_at_eof(); ++LineIt) {
-    if ((*LineIt)[(*LineIt).find_first_not_of(' ')] == '#')
-      continue;
-    // Read the header of each function.
-    //
-    // Note that for function identifiers we are actually expecting
-    // mangled names, but we may not always get them. This happens when
-    // the compiler decides not to emit the function (e.g., it was inlined
-    // and removed). In this case, the binary will not have the linkage
-    // name for the function, so the profiler will emit the function's
-    // unmangled name, which may contain characters like ':' and '>' in its
-    // name (member functions, templates, etc).
-    //
-    // The only requirement we place on the identifier, then, is that it
-    // should not begin with a number.
-    if ((*LineIt)[0] != ' ') {
-      uint64_t NumSamples, NumHeadSamples;
-      StringRef FName;
-      if (!ParseHead(*LineIt, FName, NumSamples, NumHeadSamples)) {
-        reportError(LineIt.line_number(),
-                    "Expected 'mangled_name:NUM:NUM', found " + *LineIt);
-        return sampleprof_error::malformed;
-      }
-      Profiles[FName] = FunctionSamples();
-      FunctionSamples &FProfile = Profiles[FName];
-      FProfile.setName(FName);
-      MergeResult(Result, FProfile.addTotalSamples(NumSamples));
-      MergeResult(Result, FProfile.addHeadSamples(NumHeadSamples));
-      InlineStack.clear();
-      InlineStack.push_back(&FProfile);
-    } else {
-      uint64_t NumSamples;
-      StringRef FName;
-      DenseMap<StringRef, uint64_t> TargetCountMap;
-      bool IsCallsite;
-      uint32_t Depth, LineOffset, Discriminator;
-      if (!ParseLine(*LineIt, IsCallsite, Depth, NumSamples, LineOffset,
-                     Discriminator, FName, TargetCountMap)) {
-        reportError(LineIt.line_number(),
-                    "Expected 'NUM[.NUM]: NUM[ mangled_name:NUM]*', found " +
-                        *LineIt);
-        return sampleprof_error::malformed;
-      }
-      if (IsCallsite) {
-        while (InlineStack.size() > Depth) {
-          InlineStack.pop_back();
-        }
-        FunctionSamples &FSamples = InlineStack.back()->functionSamplesAt(
-            LineLocation(LineOffset, Discriminator))[FName];
-        FSamples.setName(FName);
-        MergeResult(Result, FSamples.addTotalSamples(NumSamples));
-        InlineStack.push_back(&FSamples);
-      } else {
-        while (InlineStack.size() > Depth) {
-          InlineStack.pop_back();
-        }
-        FunctionSamples &FProfile = *InlineStack.back();
-        for (const auto &name_count : TargetCountMap) {
-          MergeResult(Result, FProfile.addCalledTargetSamples(
-                                  LineOffset, Discriminator, name_count.first,
-                                  name_count.second));
-        }
-        MergeResult(Result, FProfile.addBodySamples(LineOffset, Discriminator,
-                                                    NumSamples));
-      }
-    }
-  }
-  if (Result == sampleprof_error::success)
-    computeSummary();
-
-  return Result;
-}
-
-bool SampleProfileReaderText::hasFormat(const MemoryBuffer &Buffer) {
-  bool result = false;
-
-  // Check that the first non-comment line is a valid function header.
-  line_iterator LineIt(Buffer, /*SkipBlanks=*/true, '#');
-  if (!LineIt.is_at_eof()) {
-    if ((*LineIt)[0] != ' ') {
-      uint64_t NumSamples, NumHeadSamples;
-      StringRef FName;
-      result = ParseHead(*LineIt, FName, NumSamples, NumHeadSamples);
-    }
-  }
-
-  return result;
-}
-
-template <typename T> ErrorOr<T> SampleProfileReaderBinary::readNumber() {
-  unsigned NumBytesRead = 0;
-  std::error_code EC;
-  uint64_t Val = decodeULEB128(Data, &NumBytesRead);
-
-  if (Val > std::numeric_limits<T>::max())
-    EC = sampleprof_error::malformed;
-  else if (Data + NumBytesRead > End)
-    EC = sampleprof_error::truncated;
-  else
-    EC = sampleprof_error::success;
-
-  if (EC) {
-    reportError(0, EC.message());
-    return EC;
-  }
-
-  Data += NumBytesRead;
-  return static_cast<T>(Val);
-}
-
-ErrorOr<StringRef> SampleProfileReaderBinary::readString() {
-  std::error_code EC;
-  StringRef Str(reinterpret_cast<const char *>(Data));
-  if (Data + Str.size() + 1 > End) {
-    EC = sampleprof_error::truncated;
-    reportError(0, EC.message());
-    return EC;
-  }
-
-  Data += Str.size() + 1;
-  return Str;
-}
-
-template <typename T>
-ErrorOr<T> SampleProfileReaderBinary::readUnencodedNumber() {
-  std::error_code EC;
-
-  if (Data + sizeof(T) > End) {
-    EC = sampleprof_error::truncated;
-    reportError(0, EC.message());
-    return EC;
-  }
-
-  using namespace support;
-  T Val = endian::readNext<T, little, unaligned>(Data);
-  return Val;
-}
-
-template <typename T>
-inline ErrorOr<uint32_t> SampleProfileReaderBinary::readStringIndex(T &Table) {
-  std::error_code EC;
-  auto Idx = readNumber<uint32_t>();
-  if (std::error_code EC = Idx.getError())
-    return EC;
-  if (*Idx >= Table.size())
-    return sampleprof_error::truncated_name_table;
-  return *Idx;
-}
-
-ErrorOr<StringRef> SampleProfileReaderRawBinary::readStringFromTable() {
-  auto Idx = readStringIndex(NameTable);
-  if (std::error_code EC = Idx.getError())
-    return EC;
-
-  return NameTable[*Idx];
-}
-
-ErrorOr<StringRef> SampleProfileReaderCompactBinary::readStringFromTable() {
-  auto Idx = readStringIndex(NameTable);
-  if (std::error_code EC = Idx.getError())
-    return EC;
-
-  return StringRef(NameTable[*Idx]);
-}
-
-std::error_code
-SampleProfileReaderBinary::readProfile(FunctionSamples &FProfile) {
-  auto NumSamples = readNumber<uint64_t>();
-  if (std::error_code EC = NumSamples.getError())
-    return EC;
-  FProfile.addTotalSamples(*NumSamples);
-
-  // Read the samples in the body.
-  auto NumRecords = readNumber<uint32_t>();
-  if (std::error_code EC = NumRecords.getError())
-    return EC;
-
-  for (uint32_t I = 0; I < *NumRecords; ++I) {
-    auto LineOffset = readNumber<uint64_t>();
-    if (std::error_code EC = LineOffset.getError())
-      return EC;
-
-    if (!isOffsetLegal(*LineOffset)) {
-      return std::error_code();
-    }
-
-    auto Discriminator = readNumber<uint64_t>();
-    if (std::error_code EC = Discriminator.getError())
-      return EC;
-
-    auto NumSamples = readNumber<uint64_t>();
-    if (std::error_code EC = NumSamples.getError())
-      return EC;
-
-    auto NumCalls = readNumber<uint32_t>();
-    if (std::error_code EC = NumCalls.getError())
-      return EC;
-
-    for (uint32_t J = 0; J < *NumCalls; ++J) {
-      auto CalledFunction(readStringFromTable());
-      if (std::error_code EC = CalledFunction.getError())
-        return EC;
-
-      auto CalledFunctionSamples = readNumber<uint64_t>();
-      if (std::error_code EC = CalledFunctionSamples.getError())
-        return EC;
-
-      FProfile.addCalledTargetSamples(*LineOffset, *Discriminator,
-                                      *CalledFunction, *CalledFunctionSamples);
-    }
-
-    FProfile.addBodySamples(*LineOffset, *Discriminator, *NumSamples);
-  }
-
-  // Read all the samples for inlined function calls.
-  auto NumCallsites = readNumber<uint32_t>();
-  if (std::error_code EC = NumCallsites.getError())
-    return EC;
-
-  for (uint32_t J = 0; J < *NumCallsites; ++J) {
-    auto LineOffset = readNumber<uint64_t>();
-    if (std::error_code EC = LineOffset.getError())
-      return EC;
-
-    auto Discriminator = readNumber<uint64_t>();
-    if (std::error_code EC = Discriminator.getError())
-      return EC;
-
-    auto FName(readStringFromTable());
-    if (std::error_code EC = FName.getError())
-      return EC;
-
-    FunctionSamples &CalleeProfile = FProfile.functionSamplesAt(
-        LineLocation(*LineOffset, *Discriminator))[*FName];
-    CalleeProfile.setName(*FName);
-    if (std::error_code EC = readProfile(CalleeProfile))
-      return EC;
-  }
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderBinary::readFuncProfile() {
-  auto NumHeadSamples = readNumber<uint64_t>();
-  if (std::error_code EC = NumHeadSamples.getError())
-    return EC;
-
-  auto FName(readStringFromTable());
-  if (std::error_code EC = FName.getError())
-    return EC;
-
-  Profiles[*FName] = FunctionSamples();
-  FunctionSamples &FProfile = Profiles[*FName];
-  FProfile.setName(*FName);
-
-  FProfile.addHeadSamples(*NumHeadSamples);
-
-  if (std::error_code EC = readProfile(FProfile))
-    return EC;
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderBinary::read() {
-  while (!at_eof()) {
-    if (std::error_code EC = readFuncProfile())
-      return EC;
-  }
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderCompactBinary::read() {
-  for (auto Name : FuncsToUse) {
-    auto GUID = std::to_string(MD5Hash(Name));
-    auto iter = FuncOffsetTable.find(StringRef(GUID));
-    if (iter == FuncOffsetTable.end())
-      continue;
-    const uint8_t *SavedData = Data;
-    Data = reinterpret_cast<const uint8_t *>(Buffer->getBufferStart()) +
-           iter->second;
-    if (std::error_code EC = readFuncProfile())
-      return EC;
-    Data = SavedData;
-  }
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderRawBinary::verifySPMagic(uint64_t Magic) {
-  if (Magic == SPMagic())
-    return sampleprof_error::success;
-  return sampleprof_error::bad_magic;
-}
-
-std::error_code
-SampleProfileReaderCompactBinary::verifySPMagic(uint64_t Magic) {
-  if (Magic == SPMagic(SPF_Compact_Binary))
-    return sampleprof_error::success;
-  return sampleprof_error::bad_magic;
-}
-
-std::error_code SampleProfileReaderRawBinary::readNameTable() {
-  auto Size = readNumber<uint32_t>();
-  if (std::error_code EC = Size.getError())
-    return EC;
-  NameTable.reserve(*Size);
-  for (uint32_t I = 0; I < *Size; ++I) {
-    auto Name(readString());
-    if (std::error_code EC = Name.getError())
-      return EC;
-    NameTable.push_back(*Name);
-  }
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderCompactBinary::readNameTable() {
-  auto Size = readNumber<uint64_t>();
-  if (std::error_code EC = Size.getError())
-    return EC;
-  NameTable.reserve(*Size);
-  for (uint32_t I = 0; I < *Size; ++I) {
-    auto FID = readNumber<uint64_t>();
-    if (std::error_code EC = FID.getError())
-      return EC;
-    NameTable.push_back(std::to_string(*FID));
-  }
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderBinary::readHeader() {
-  Data = reinterpret_cast<const uint8_t *>(Buffer->getBufferStart());
-  End = Data + Buffer->getBufferSize();
-
-  // Read and check the magic identifier.
-  auto Magic = readNumber<uint64_t>();
-  if (std::error_code EC = Magic.getError())
-    return EC;
-  else if (std::error_code EC = verifySPMagic(*Magic))
-    return EC;
-
-  // Read the version number.
-  auto Version = readNumber<uint64_t>();
-  if (std::error_code EC = Version.getError())
-    return EC;
-  else if (*Version != SPVersion())
-    return sampleprof_error::unsupported_version;
-
-  if (std::error_code EC = readSummary())
-    return EC;
-
-  if (std::error_code EC = readNameTable())
-    return EC;
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderCompactBinary::readHeader() {
-  SampleProfileReaderBinary::readHeader();
-  if (std::error_code EC = readFuncOffsetTable())
-    return EC;
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderCompactBinary::readFuncOffsetTable() {
-  auto TableOffset = readUnencodedNumber<uint64_t>();
-  if (std::error_code EC = TableOffset.getError())
-    return EC;
-
-  const uint8_t *SavedData = Data;
-  const uint8_t *TableStart =
-      reinterpret_cast<const uint8_t *>(Buffer->getBufferStart()) +
-      *TableOffset;
-  Data = TableStart;
-
-  auto Size = readNumber<uint64_t>();
-  if (std::error_code EC = Size.getError())
-    return EC;
-
-  FuncOffsetTable.reserve(*Size);
-  for (uint32_t I = 0; I < *Size; ++I) {
-    auto FName(readStringFromTable());
-    if (std::error_code EC = FName.getError())
-      return EC;
-
-    auto Offset = readNumber<uint64_t>();
-    if (std::error_code EC = Offset.getError())
-      return EC;
-
-    FuncOffsetTable[*FName] = *Offset;
-  }
-  End = TableStart;
-  Data = SavedData;
-  return sampleprof_error::success;
-}
-
-void SampleProfileReaderCompactBinary::collectFuncsToUse(const Module &M) {
-  FuncsToUse.clear();
-  for (auto &F : M) {
-    StringRef Fname = F.getName().split('.').first;
-    FuncsToUse.insert(Fname);
-  }
-}
-
-std::error_code SampleProfileReaderBinary::readSummaryEntry(
-    std::vector<ProfileSummaryEntry> &Entries) {
-  auto Cutoff = readNumber<uint64_t>();
-  if (std::error_code EC = Cutoff.getError())
-    return EC;
-
-  auto MinBlockCount = readNumber<uint64_t>();
-  if (std::error_code EC = MinBlockCount.getError())
-    return EC;
-
-  auto NumBlocks = readNumber<uint64_t>();
-  if (std::error_code EC = NumBlocks.getError())
-    return EC;
-
-  Entries.emplace_back(*Cutoff, *MinBlockCount, *NumBlocks);
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderBinary::readSummary() {
-  auto TotalCount = readNumber<uint64_t>();
-  if (std::error_code EC = TotalCount.getError())
-    return EC;
-
-  auto MaxBlockCount = readNumber<uint64_t>();
-  if (std::error_code EC = MaxBlockCount.getError())
-    return EC;
-
-  auto MaxFunctionCount = readNumber<uint64_t>();
-  if (std::error_code EC = MaxFunctionCount.getError())
-    return EC;
-
-  auto NumBlocks = readNumber<uint64_t>();
-  if (std::error_code EC = NumBlocks.getError())
-    return EC;
-
-  auto NumFunctions = readNumber<uint64_t>();
-  if (std::error_code EC = NumFunctions.getError())
-    return EC;
-
-  auto NumSummaryEntries = readNumber<uint64_t>();
-  if (std::error_code EC = NumSummaryEntries.getError())
-    return EC;
-
-  std::vector<ProfileSummaryEntry> Entries;
-  for (unsigned i = 0; i < *NumSummaryEntries; i++) {
-    std::error_code EC = readSummaryEntry(Entries);
-    if (EC != sampleprof_error::success)
-      return EC;
-  }
-  Summary = llvm::make_unique<ProfileSummary>(
-      ProfileSummary::PSK_Sample, Entries, *TotalCount, *MaxBlockCount, 0,
-      *MaxFunctionCount, *NumBlocks, *NumFunctions);
-
-  return sampleprof_error::success;
-}
-
-bool SampleProfileReaderRawBinary::hasFormat(const MemoryBuffer &Buffer) {
-  const uint8_t *Data =
-      reinterpret_cast<const uint8_t *>(Buffer.getBufferStart());
-  uint64_t Magic = decodeULEB128(Data);
-  return Magic == SPMagic();
-}
-
-bool SampleProfileReaderCompactBinary::hasFormat(const MemoryBuffer &Buffer) {
-  const uint8_t *Data =
-      reinterpret_cast<const uint8_t *>(Buffer.getBufferStart());
-  uint64_t Magic = decodeULEB128(Data);
-  return Magic == SPMagic(SPF_Compact_Binary);
-}
-
-std::error_code SampleProfileReaderGCC::skipNextWord() {
-  uint32_t dummy;
-  if (!GcovBuffer.readInt(dummy))
-    return sampleprof_error::truncated;
-  return sampleprof_error::success;
-}
-
-template <typename T> ErrorOr<T> SampleProfileReaderGCC::readNumber() {
-  if (sizeof(T) <= sizeof(uint32_t)) {
-    uint32_t Val;
-    if (GcovBuffer.readInt(Val) && Val <= std::numeric_limits<T>::max())
-      return static_cast<T>(Val);
-  } else if (sizeof(T) <= sizeof(uint64_t)) {
-    uint64_t Val;
-    if (GcovBuffer.readInt64(Val) && Val <= std::numeric_limits<T>::max())
-      return static_cast<T>(Val);
-  }
-
-  std::error_code EC = sampleprof_error::malformed;
-  reportError(0, EC.message());
-  return EC;
-}
-
-ErrorOr<StringRef> SampleProfileReaderGCC::readString() {
-  StringRef Str;
-  if (!GcovBuffer.readString(Str))
-    return sampleprof_error::truncated;
-  return Str;
-}
-
-std::error_code SampleProfileReaderGCC::readHeader() {
-  // Read the magic identifier.
-  if (!GcovBuffer.readGCDAFormat())
-    return sampleprof_error::unrecognized_format;
-
-  // Read the version number. Note - the GCC reader does not validate this
-  // version, but the profile creator generates v704.
-  GCOV::GCOVVersion version;
-  if (!GcovBuffer.readGCOVVersion(version))
-    return sampleprof_error::unrecognized_format;
-
-  if (version != GCOV::V704)
-    return sampleprof_error::unsupported_version;
-
-  // Skip the empty integer.
-  if (std::error_code EC = skipNextWord())
-    return EC;
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderGCC::readSectionTag(uint32_t Expected) {
-  uint32_t Tag;
-  if (!GcovBuffer.readInt(Tag))
-    return sampleprof_error::truncated;
-
-  if (Tag != Expected)
-    return sampleprof_error::malformed;
-
-  if (std::error_code EC = skipNextWord())
-    return EC;
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderGCC::readNameTable() {
-  if (std::error_code EC = readSectionTag(GCOVTagAFDOFileNames))
-    return EC;
-
-  uint32_t Size;
-  if (!GcovBuffer.readInt(Size))
-    return sampleprof_error::truncated;
-
-  for (uint32_t I = 0; I < Size; ++I) {
-    StringRef Str;
-    if (!GcovBuffer.readString(Str))
-      return sampleprof_error::truncated;
-    Names.push_back(Str);
-  }
-
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderGCC::readFunctionProfiles() {
-  if (std::error_code EC = readSectionTag(GCOVTagAFDOFunction))
-    return EC;
-
-  uint32_t NumFunctions;
-  if (!GcovBuffer.readInt(NumFunctions))
-    return sampleprof_error::truncated;
-
-  InlineCallStack Stack;
-  for (uint32_t I = 0; I < NumFunctions; ++I)
-    if (std::error_code EC = readOneFunctionProfile(Stack, true, 0))
-      return EC;
-
-  computeSummary();
-  return sampleprof_error::success;
-}
-
-std::error_code SampleProfileReaderGCC::readOneFunctionProfile(
-    const InlineCallStack &InlineStack, bool Update, uint32_t Offset) {
-  uint64_t HeadCount = 0;
-  if (InlineStack.size() == 0)
-    if (!GcovBuffer.readInt64(HeadCount))
-      return sampleprof_error::truncated;
-
-  uint32_t NameIdx;
-  if (!GcovBuffer.readInt(NameIdx))
-    return sampleprof_error::truncated;
-
-  StringRef Name(Names[NameIdx]);
-
-  uint32_t NumPosCounts;
-  if (!GcovBuffer.readInt(NumPosCounts))
-    return sampleprof_error::truncated;
-
-  uint32_t NumCallsites;
-  if (!GcovBuffer.readInt(NumCallsites))
-    return sampleprof_error::truncated;
-
-  FunctionSamples *FProfile = nullptr;
-  if (InlineStack.size() == 0) {
-    // If this is a top function that we have already processed, do not
-    // update its profile again.  This happens in the presence of
-    // function aliases.  Since these aliases share the same function
-    // body, there will be identical replicated profiles for the
-    // original function.  In this case, we simply not bother updating
-    // the profile of the original function.
-    FProfile = &Profiles[Name];
-    FProfile->addHeadSamples(HeadCount);
-    if (FProfile->getTotalSamples() > 0)
-      Update = false;
-  } else {
-    // Otherwise, we are reading an inlined instance. The top of the
-    // inline stack contains the profile of the caller. Insert this
-    // callee in the caller's CallsiteMap.
-    FunctionSamples *CallerProfile = InlineStack.front();
-    uint32_t LineOffset = Offset >> 16;
-    uint32_t Discriminator = Offset & 0xffff;
-    FProfile = &CallerProfile->functionSamplesAt(
-        LineLocation(LineOffset, Discriminator))[Name];
-  }
-  FProfile->setName(Name);
-
-  for (uint32_t I = 0; I < NumPosCounts; ++I) {
-    uint32_t Offset;
-    if (!GcovBuffer.readInt(Offset))
-      return sampleprof_error::truncated;
-
-    uint32_t NumTargets;
-    if (!GcovBuffer.readInt(NumTargets))
-      return sampleprof_error::truncated;
-
-    uint64_t Count;
-    if (!GcovBuffer.readInt64(Count))
-      return sampleprof_error::truncated;
-
-    // The line location is encoded in the offset as:
-    //   high 16 bits: line offset to the start of the function.
-    //   low 16 bits: discriminator.
-    uint32_t LineOffset = Offset >> 16;
-    uint32_t Discriminator = Offset & 0xffff;
-
-    InlineCallStack NewStack;
-    NewStack.push_back(FProfile);
-    NewStack.insert(NewStack.end(), InlineStack.begin(), InlineStack.end());
-    if (Update) {
-      // Walk up the inline stack, adding the samples on this line to
-      // the total sample count of the callers in the chain.
-      for (auto CallerProfile : NewStack)
-        CallerProfile->addTotalSamples(Count);
-
-      // Update the body samples for the current profile.
-      FProfile->addBodySamples(LineOffset, Discriminator, Count);
-    }
-
-    // Process the list of functions called at an indirect call site.
-    // These are all the targets that a function pointer (or virtual
-    // function) resolved at runtime.
-    for (uint32_t J = 0; J < NumTargets; J++) {
-      uint32_t HistVal;
-      if (!GcovBuffer.readInt(HistVal))
-        return sampleprof_error::truncated;
-
-      if (HistVal != HIST_TYPE_INDIR_CALL_TOPN)
-        return sampleprof_error::malformed;
-
-      uint64_t TargetIdx;
-      if (!GcovBuffer.readInt64(TargetIdx))
-        return sampleprof_error::truncated;
-      StringRef TargetName(Names[TargetIdx]);
-
-      uint64_t TargetCount;
-      if (!GcovBuffer.readInt64(TargetCount))
-        return sampleprof_error::truncated;
-
-      if (Update)
-        FProfile->addCalledTargetSamples(LineOffset, Discriminator,
-                                         TargetName, TargetCount);
-    }
-  }
-
-  // Process all the inlined callers into the current function. These
-  // are all the callsites that were inlined into this function.
-  for (uint32_t I = 0; I < NumCallsites; I++) {
-    // The offset is encoded as:
-    //   high 16 bits: line offset to the start of the function.
-    //   low 16 bits: discriminator.
-    uint32_t Offset;
-    if (!GcovBuffer.readInt(Offset))
-      return sampleprof_error::truncated;
-    InlineCallStack NewStack;
-    NewStack.push_back(FProfile);
-    NewStack.insert(NewStack.end(), InlineStack.begin(), InlineStack.end());
-    if (std::error_code EC = readOneFunctionProfile(NewStack, Update, Offset))
-      return EC;
-  }
-
-  return sampleprof_error::success;
-}
-
-/// Read a GCC AutoFDO profile.
-///
-/// This format is generated by the Linux Perf conversion tool at
-/// https://github.com/google/autofdo.
-std::error_code SampleProfileReaderGCC::read() {
-  // Read the string table.
-  if (std::error_code EC = readNameTable())
-    return EC;
-
-  // Read the source profile.
-  if (std::error_code EC = readFunctionProfiles())
-    return EC;
-
-  return sampleprof_error::success;
-}
-
-bool SampleProfileReaderGCC::hasFormat(const MemoryBuffer &Buffer) {
-  StringRef Magic(reinterpret_cast<const char *>(Buffer.getBufferStart()));
-  return Magic == "adcg*704";
-}
-
-std::error_code SampleProfileReaderItaniumRemapper::read() {
-  // If the underlying data is in compact format, we can't remap it because
-  // we don't know what the original function names were.
-  if (getFormat() == SPF_Compact_Binary) {
-    Ctx.diagnose(DiagnosticInfoSampleProfile(
-        Buffer->getBufferIdentifier(),
-        "Profile data remapping cannot be applied to profile data "
-        "in compact format (original mangled names are not available).",
-        DS_Warning));
-    return sampleprof_error::success;
-  }
-
-  if (Error E = Remappings.read(*Buffer)) {
-    handleAllErrors(
-        std::move(E), [&](const SymbolRemappingParseError &ParseError) {
-          reportError(ParseError.getLineNum(), ParseError.getMessage());
-        });
-    return sampleprof_error::malformed;
-  }
-
-  for (auto &Sample : getProfiles())
-    if (auto Key = Remappings.insert(Sample.first()))
-      SampleMap.insert({Key, &Sample.second});
-
-  return sampleprof_error::success;
-}
-
-FunctionSamples *
-SampleProfileReaderItaniumRemapper::getSamplesFor(StringRef Fname) {
-  if (auto Key = Remappings.lookup(Fname))
-    return SampleMap.lookup(Key);
-  return SampleProfileReader::getSamplesFor(Fname);
-}
-
-/// Prepare a memory buffer for the contents of \p Filename.
-///
-/// \returns an error code indicating the status of the buffer.
-static ErrorOr<std::unique_ptr<MemoryBuffer>>
-setupMemoryBuffer(const Twine &Filename) {
-  auto BufferOrErr = MemoryBuffer::getFileOrSTDIN(Filename);
-  if (std::error_code EC = BufferOrErr.getError())
-    return EC;
-  auto Buffer = std::move(BufferOrErr.get());
-
-  // Sanity check the file.
-  if (uint64_t(Buffer->getBufferSize()) > std::numeric_limits<uint32_t>::max())
-    return sampleprof_error::too_large;
-
-  return std::move(Buffer);
-}
-
-/// Create a sample profile reader based on the format of the input file.
-///
-/// \param Filename The file to open.
-///
-/// \param C The LLVM context to use to emit diagnostics.
-///
-/// \returns an error code indicating the status of the created reader.
-ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReader::create(const Twine &Filename, LLVMContext &C) {
-  auto BufferOrError = setupMemoryBuffer(Filename);
-  if (std::error_code EC = BufferOrError.getError())
-    return EC;
-  return create(BufferOrError.get(), C);
-}
-
-/// Create a sample profile remapper from the given input, to remap the
-/// function names in the given profile data.
-///
-/// \param Filename The file to open.
-///
-/// \param C The LLVM context to use to emit diagnostics.
-///
-/// \param Underlying The underlying profile data reader to remap.
-///
-/// \returns an error code indicating the status of the created reader.
-ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReaderItaniumRemapper::create(
-    const Twine &Filename, LLVMContext &C,
-    std::unique_ptr<SampleProfileReader> Underlying) {
-  auto BufferOrError = setupMemoryBuffer(Filename);
-  if (std::error_code EC = BufferOrError.getError())
-    return EC;
-  return llvm::make_unique<SampleProfileReaderItaniumRemapper>(
-      std::move(BufferOrError.get()), C, std::move(Underlying));
-}
-
-/// Create a sample profile reader based on the format of the input data.
-///
-/// \param B The memory buffer to create the reader from (assumes ownership).
-///
-/// \param C The LLVM context to use to emit diagnostics.
-///
-/// \returns an error code indicating the status of the created reader.
-ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReader::create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C) {
-  std::unique_ptr<SampleProfileReader> Reader;
-  if (SampleProfileReaderRawBinary::hasFormat(*B))
-    Reader.reset(new SampleProfileReaderRawBinary(std::move(B), C));
-  else if (SampleProfileReaderCompactBinary::hasFormat(*B))
-    Reader.reset(new SampleProfileReaderCompactBinary(std::move(B), C));
-  else if (SampleProfileReaderGCC::hasFormat(*B))
-    Reader.reset(new SampleProfileReaderGCC(std::move(B), C));
-  else if (SampleProfileReaderText::hasFormat(*B))
-    Reader.reset(new SampleProfileReaderText(std::move(B), C));
-  else
-    return sampleprof_error::unrecognized_format;
-
-  FunctionSamples::Format = Reader->getFormat();
-  if (std::error_code EC = Reader->readHeader())
-    return EC;
-
-  return std::move(Reader);
-}
-
-// For text and GCC file formats, we compute the summary after reading the
-// profile. Binary format has the profile summary in its header.
-void SampleProfileReader::computeSummary() {
-  SampleProfileSummaryBuilder Builder(ProfileSummaryBuilder::DefaultCutoffs);
-  for (const auto &I : Profiles) {
-    const FunctionSamples &Profile = I.second;
-    Builder.addRecord(Profile);
-  }
-  Summary = Builder.getSummary();
-}