Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.

1 files changed, 0 insertions, 689 deletions

diff --git a/contrib/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp b/contrib/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp
deleted file mode 100644
index 4a1308de5504..000000000000
--- a/contrib/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp
+++ /dev/null
@@ -1,689 +0,0 @@
-//===- FuzzerTracePC.cpp - PC tracing--------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-// Trace PCs.
-// This module implements __sanitizer_cov_trace_pc_guard[_init],
-// the callback required for -fsanitize-coverage=trace-pc-guard instrumentation.
-//
-//===----------------------------------------------------------------------===//
-
-#include "FuzzerTracePC.h"
-#include "FuzzerBuiltins.h"
-#include "FuzzerBuiltinsMsvc.h"
-#include "FuzzerCorpus.h"
-#include "FuzzerDefs.h"
-#include "FuzzerDictionary.h"
-#include "FuzzerExtFunctions.h"
-#include "FuzzerIO.h"
-#include "FuzzerUtil.h"
-#include "FuzzerValueBitMap.h"
-#include <set>
-
-// Used by -fsanitize-coverage=stack-depth to track stack depth
-ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC uintptr_t __sancov_lowest_stack;
-
-namespace fuzzer {
-
-TracePC TPC;
-
-size_t TracePC::GetTotalPCCoverage() {
-  return ObservedPCs.size();
-}
-
-
-void TracePC::HandleInline8bitCountersInit(uint8_t *Start, uint8_t *Stop) {
-  if (Start == Stop) return;
-  if (NumModules &&
-      Modules[NumModules - 1].Start() == Start)
-    return;
-  assert(NumModules <
-         sizeof(Modules) / sizeof(Modules[0]));
-  auto &M = Modules[NumModules++];
-  uint8_t *AlignedStart = RoundUpByPage(Start);
-  uint8_t *AlignedStop  = RoundDownByPage(Stop);
-  size_t NumFullPages = AlignedStop > AlignedStart ?
-                        (AlignedStop - AlignedStart) / PageSize() : 0;
-  bool NeedFirst = Start < AlignedStart || !NumFullPages;
-  bool NeedLast  = Stop > AlignedStop && AlignedStop >= AlignedStart;
-  M.NumRegions = NumFullPages + NeedFirst + NeedLast;;
-  assert(M.NumRegions > 0);
-  M.Regions = new Module::Region[M.NumRegions];
-  assert(M.Regions);
-  size_t R = 0;
-  if (NeedFirst)
-    M.Regions[R++] = {Start, std::min(Stop, AlignedStart), true, false};
-  for (uint8_t *P = AlignedStart; P < AlignedStop; P += PageSize())
-    M.Regions[R++] = {P, P + PageSize(), true, true};
-  if (NeedLast)
-    M.Regions[R++] = {AlignedStop, Stop, true, false};
-  assert(R == M.NumRegions);
-  assert(M.Size() == (size_t)(Stop - Start));
-  assert(M.Stop() == Stop);
-  assert(M.Start() == Start);
-  NumInline8bitCounters += M.Size();
-}
-
-// Mark all full page counter regions as PROT_NONE and set Enabled=false.
-// The first time the instrumented code hits such a protected/disabled
-// counter region we should catch a SEGV and call UnprotectLazyCounters,
-// which will mark the page as PROT_READ|PROT_WRITE and set Enabled=true.
-//
-// Whenever other functions iterate over the counters they should ignore
-// regions with Enabled=false.
-void TracePC::ProtectLazyCounters() {
-  size_t NumPagesProtected = 0;
-  IterateCounterRegions([&](Module::Region &R) {
-    if (!R.OneFullPage) return;
-    if (Mprotect(R.Start, R.Stop - R.Start, false)) {
-      R.Enabled = false;
-      NumPagesProtected++;
-    }
-  });
-  if (NumPagesProtected)
-    Printf("INFO: %zd pages of counters where protected;"
-           " libFuzzer's SEGV handler must be installed\n",
-           NumPagesProtected);
-}
-
-bool TracePC::UnprotectLazyCounters(void *CounterPtr) {
-  // Printf("UnprotectLazyCounters: %p\n", CounterPtr);
-  if (!CounterPtr)
-    return false;
-  bool Done = false;
-  uint8_t *Addr = reinterpret_cast<uint8_t *>(CounterPtr);
-  IterateCounterRegions([&](Module::Region &R) {
-    if (!R.OneFullPage || R.Enabled || Done) return;
-    if (Addr >= R.Start && Addr < R.Stop)
-      if (Mprotect(R.Start, R.Stop - R.Start, true)) {
-        R.Enabled = true;
-        Done = true;
-      }
-  });
-  return Done;
-}
-
-void TracePC::HandlePCsInit(const uintptr_t *Start, const uintptr_t *Stop) {
-  const PCTableEntry *B = reinterpret_cast<const PCTableEntry *>(Start);
-  const PCTableEntry *E = reinterpret_cast<const PCTableEntry *>(Stop);
-  if (NumPCTables && ModulePCTable[NumPCTables - 1].Start == B) return;
-  assert(NumPCTables < sizeof(ModulePCTable) / sizeof(ModulePCTable[0]));
-  ModulePCTable[NumPCTables++] = {B, E};
-  NumPCsInPCTables += E - B;
-}
-
-void TracePC::PrintModuleInfo() {
-  if (NumModules) {
-    Printf("INFO: Loaded %zd modules   (%zd inline 8-bit counters): ",
-           NumModules, NumInline8bitCounters);
-    for (size_t i = 0; i < NumModules; i++)
-      Printf("%zd [%p, %p), ", Modules[i].Size(), Modules[i].Start(),
-             Modules[i].Stop());
-    Printf("\n");
-  }
-  if (NumPCTables) {
-    Printf("INFO: Loaded %zd PC tables (%zd PCs): ", NumPCTables,
-           NumPCsInPCTables);
-    for (size_t i = 0; i < NumPCTables; i++) {
-      Printf("%zd [%p,%p), ", ModulePCTable[i].Stop - ModulePCTable[i].Start,
-             ModulePCTable[i].Start, ModulePCTable[i].Stop);
-    }
-    Printf("\n");
-
-    if (NumInline8bitCounters && NumInline8bitCounters != NumPCsInPCTables) {
-      Printf("ERROR: The size of coverage PC tables does not match the\n"
-             "number of instrumented PCs. This might be a compiler bug,\n"
-             "please contact the libFuzzer developers.\n"
-             "Also check https://bugs.llvm.org/show_bug.cgi?id=34636\n"
-             "for possible workarounds (tl;dr: don't use the old GNU ld)\n");
-      _Exit(1);
-    }
-  }
-  if (size_t NumExtraCounters = ExtraCountersEnd() - ExtraCountersBegin())
-    Printf("INFO: %zd Extra Counters\n", NumExtraCounters);
-}
-
-ATTRIBUTE_NO_SANITIZE_ALL
-void TracePC::HandleCallerCallee(uintptr_t Caller, uintptr_t Callee) {
-  const uintptr_t kBits = 12;
-  const uintptr_t kMask = (1 << kBits) - 1;
-  uintptr_t Idx = (Caller & kMask) | ((Callee & kMask) << kBits);
-  ValueProfileMap.AddValueModPrime(Idx);
-}
-
-/// \return the address of the previous instruction.
-/// Note: the logic is copied from `sanitizer_common/sanitizer_stacktrace.h`
-inline ALWAYS_INLINE uintptr_t GetPreviousInstructionPc(uintptr_t PC) {
-#if defined(__arm__)
-  // T32 (Thumb) branch instructions might be 16 or 32 bit long,
-  // so we return (pc-2) in that case in order to be safe.
-  // For A32 mode we return (pc-4) because all instructions are 32 bit long.
-  return (PC - 3) & (~1);
-#elif defined(__powerpc__) || defined(__powerpc64__) || defined(__aarch64__)
-  // PCs are always 4 byte aligned.
-  return PC - 4;
-#elif defined(__sparc__) || defined(__mips__)
-  return PC - 8;
-#else
-  return PC - 1;
-#endif
-}
-
-/// \return the address of the next instruction.
-/// Note: the logic is copied from `sanitizer_common/sanitizer_stacktrace.cc`
-ALWAYS_INLINE uintptr_t TracePC::GetNextInstructionPc(uintptr_t PC) {
-#if defined(__mips__)
-  return PC + 8;
-#elif defined(__powerpc__) || defined(__sparc__) || defined(__arm__) || \
-    defined(__aarch64__)
-  return PC + 4;
-#else
-  return PC + 1;
-#endif
-}
-
-void TracePC::UpdateObservedPCs() {
-  Vector<uintptr_t> CoveredFuncs;
-  auto ObservePC = [&](const PCTableEntry *TE) {
-    if (ObservedPCs.insert(TE).second && DoPrintNewPCs) {
-      PrintPC("\tNEW_PC: %p %F %L", "\tNEW_PC: %p",
-              GetNextInstructionPc(TE->PC));
-      Printf("\n");
-    }
-  };
-
-  auto Observe = [&](const PCTableEntry *TE) {
-    if (PcIsFuncEntry(TE))
-      if (++ObservedFuncs[TE->PC] == 1 && NumPrintNewFuncs)
-        CoveredFuncs.push_back(TE->PC);
-    ObservePC(TE);
-  };
-
-  if (NumPCsInPCTables) {
-    if (NumInline8bitCounters == NumPCsInPCTables) {
-      for (size_t i = 0; i < NumModules; i++) {
-        auto &M = Modules[i];
-        assert(M.Size() ==
-               (size_t)(ModulePCTable[i].Stop - ModulePCTable[i].Start));
-        for (size_t r = 0; r < M.NumRegions; r++) {
-          auto &R = M.Regions[r];
-          if (!R.Enabled) continue;
-          for (uint8_t *P = R.Start; P < R.Stop; P++)
-            if (*P)
-              Observe(&ModulePCTable[i].Start[M.Idx(P)]);
-        }
-      }
-    }
-  }
-
-  for (size_t i = 0, N = Min(CoveredFuncs.size(), NumPrintNewFuncs); i < N;
-       i++) {
-    Printf("\tNEW_FUNC[%zd/%zd]: ", i + 1, CoveredFuncs.size());
-    PrintPC("%p %F %L", "%p", GetNextInstructionPc(CoveredFuncs[i]));
-    Printf("\n");
-  }
-}
-
-uintptr_t TracePC::PCTableEntryIdx(const PCTableEntry *TE) {
-  size_t TotalTEs = 0;
-  for (size_t i = 0; i < NumPCTables; i++) {
-    auto &M = ModulePCTable[i];
-    if (TE >= M.Start && TE < M.Stop)
-      return TotalTEs + TE - M.Start;
-    TotalTEs += M.Stop - M.Start;
-  }
-  assert(0);
-  return 0;
-}
-
-const TracePC::PCTableEntry *TracePC::PCTableEntryByIdx(uintptr_t Idx) {
-  for (size_t i = 0; i < NumPCTables; i++) {
-    auto &M = ModulePCTable[i];
-    size_t Size = M.Stop - M.Start;
-    if (Idx < Size) return &M.Start[Idx];
-    Idx -= Size;
-  }
-  return nullptr;
-}
-
-static std::string GetModuleName(uintptr_t PC) {
-  char ModulePathRaw[4096] = "";  // What's PATH_MAX in portable C++?
-  void *OffsetRaw = nullptr;
-  if (!EF->__sanitizer_get_module_and_offset_for_pc(
-      reinterpret_cast<void *>(PC), ModulePathRaw,
-      sizeof(ModulePathRaw), &OffsetRaw))
-    return "";
-  return ModulePathRaw;
-}
-
-template<class CallBack>
-void TracePC::IterateCoveredFunctions(CallBack CB) {
-  for (size_t i = 0; i < NumPCTables; i++) {
-    auto &M = ModulePCTable[i];
-    assert(M.Start < M.Stop);
-    auto ModuleName = GetModuleName(M.Start->PC);
-    for (auto NextFE = M.Start; NextFE < M.Stop; ) {
-      auto FE = NextFE;
-      assert(PcIsFuncEntry(FE) && "Not a function entry point");
-      do {
-        NextFE++;
-      } while (NextFE < M.Stop && !(PcIsFuncEntry(NextFE)));
-      CB(FE, NextFE, ObservedFuncs[FE->PC]);
-    }
-  }
-}
-
-void TracePC::SetFocusFunction(const std::string &FuncName) {
-  // This function should be called once.
-  assert(!FocusFunctionCounterPtr);
-  if (FuncName.empty())
-    return;
-  for (size_t M = 0; M < NumModules; M++) {
-    auto &PCTE = ModulePCTable[M];
-    size_t N = PCTE.Stop - PCTE.Start;
-    for (size_t I = 0; I < N; I++) {
-      if (!(PcIsFuncEntry(&PCTE.Start[I]))) continue;  // not a function entry.
-      auto Name = DescribePC("%F", GetNextInstructionPc(PCTE.Start[I].PC));
-      if (Name[0] == 'i' && Name[1] == 'n' && Name[2] == ' ')
-        Name = Name.substr(3, std::string::npos);
-      if (FuncName != Name) continue;
-      Printf("INFO: Focus function is set to '%s'\n", Name.c_str());
-      FocusFunctionCounterPtr = Modules[M].Start() + I;
-      return;
-    }
-  }
-}
-
-bool TracePC::ObservedFocusFunction() {
-  return FocusFunctionCounterPtr && *FocusFunctionCounterPtr;
-}
-
-void TracePC::PrintCoverage() {
-  if (!EF->__sanitizer_symbolize_pc ||
-      !EF->__sanitizer_get_module_and_offset_for_pc) {
-    Printf("INFO: __sanitizer_symbolize_pc or "
-           "__sanitizer_get_module_and_offset_for_pc is not available,"
-           " not printing coverage\n");
-    return;
-  }
-  Printf("COVERAGE:\n");
-  auto CoveredFunctionCallback = [&](const PCTableEntry *First,
-                                     const PCTableEntry *Last,
-                                     uintptr_t Counter) {
-    assert(First < Last);
-    auto VisualizePC = GetNextInstructionPc(First->PC);
-    std::string FileStr = DescribePC("%s", VisualizePC);
-    if (!IsInterestingCoverageFile(FileStr))
-      return;
-    std::string FunctionStr = DescribePC("%F", VisualizePC);
-    if (FunctionStr.find("in ") == 0)
-      FunctionStr = FunctionStr.substr(3);
-    std::string LineStr = DescribePC("%l", VisualizePC);
-    size_t NumEdges = Last - First;
-    Vector<uintptr_t> UncoveredPCs;
-    for (auto TE = First; TE < Last; TE++)
-      if (!ObservedPCs.count(TE))
-        UncoveredPCs.push_back(TE->PC);
-    Printf("%sCOVERED_FUNC: hits: %zd", Counter ? "" : "UN", Counter);
-    Printf(" edges: %zd/%zd", NumEdges - UncoveredPCs.size(), NumEdges);
-    Printf(" %s %s:%s\n", FunctionStr.c_str(), FileStr.c_str(),
-           LineStr.c_str());
-    if (Counter)
-      for (auto PC : UncoveredPCs)
-        Printf("  UNCOVERED_PC: %s\n",
-               DescribePC("%s:%l", GetNextInstructionPc(PC)).c_str());
-  };
-
-  IterateCoveredFunctions(CoveredFunctionCallback);
-}
-
-// Value profile.
-// We keep track of various values that affect control flow.
-// These values are inserted into a bit-set-based hash map.
-// Every new bit in the map is treated as a new coverage.
-//
-// For memcmp/strcmp/etc the interesting value is the length of the common
-// prefix of the parameters.
-// For cmp instructions the interesting value is a XOR of the parameters.
-// The interesting value is mixed up with the PC and is then added to the map.
-
-ATTRIBUTE_NO_SANITIZE_ALL
-void TracePC::AddValueForMemcmp(void *caller_pc, const void *s1, const void *s2,
-                                size_t n, bool StopAtZero) {
-  if (!n) return;
-  size_t Len = std::min(n, Word::GetMaxSize());
-  const uint8_t *A1 = reinterpret_cast<const uint8_t *>(s1);
-  const uint8_t *A2 = reinterpret_cast<const uint8_t *>(s2);
-  uint8_t B1[Word::kMaxSize];
-  uint8_t B2[Word::kMaxSize];
-  // Copy the data into locals in this non-msan-instrumented function
-  // to avoid msan complaining further.
-  size_t Hash = 0;  // Compute some simple hash of both strings.
-  for (size_t i = 0; i < Len; i++) {
-    B1[i] = A1[i];
-    B2[i] = A2[i];
-    size_t T = B1[i];
-    Hash ^= (T << 8) | B2[i];
-  }
-  size_t I = 0;
-  uint8_t HammingDistance = 0;
-  for (; I < Len; I++) {
-    if (B1[I] != B2[I] || (StopAtZero && B1[I] == 0)) {
-      HammingDistance = Popcountll(B1[I] ^ B2[I]);
-      break;
-    }
-  }
-  size_t PC = reinterpret_cast<size_t>(caller_pc);
-  size_t Idx = (PC & 4095) | (I << 12);
-  Idx += HammingDistance;
-  ValueProfileMap.AddValue(Idx);
-  TORCW.Insert(Idx ^ Hash, Word(B1, Len), Word(B2, Len));
-}
-
-template <class T>
-ATTRIBUTE_TARGET_POPCNT ALWAYS_INLINE
-ATTRIBUTE_NO_SANITIZE_ALL
-void TracePC::HandleCmp(uintptr_t PC, T Arg1, T Arg2) {
-  uint64_t ArgXor = Arg1 ^ Arg2;
-  if (sizeof(T) == 4)
-      TORC4.Insert(ArgXor, Arg1, Arg2);
-  else if (sizeof(T) == 8)
-      TORC8.Insert(ArgXor, Arg1, Arg2);
-  uint64_t HammingDistance = Popcountll(ArgXor);  // [0,64]
-  uint64_t AbsoluteDistance = (Arg1 == Arg2 ? 0 : Clzll(Arg1 - Arg2) + 1);
-  ValueProfileMap.AddValue(PC * 128 + HammingDistance);
-  ValueProfileMap.AddValue(PC * 128 + 64 + AbsoluteDistance);
-}
-
-static size_t InternalStrnlen(const char *S, size_t MaxLen) {
-  size_t Len = 0;
-  for (; Len < MaxLen && S[Len]; Len++) {}
-  return Len;
-}
-
-// Finds min of (strlen(S1), strlen(S2)).
-// Needed bacause one of these strings may actually be non-zero terminated.
-static size_t InternalStrnlen2(const char *S1, const char *S2) {
-  size_t Len = 0;
-  for (; S1[Len] && S2[Len]; Len++)  {}
-  return Len;
-}
-
-void TracePC::ClearInlineCounters() {
-  IterateCounterRegions([](const Module::Region &R){
-    if (R.Enabled)
-      memset(R.Start, 0, R.Stop - R.Start);
-  });
-}
-
-ATTRIBUTE_NO_SANITIZE_ALL
-void TracePC::RecordInitialStack() {
-  int stack;
-  __sancov_lowest_stack = InitialStack = reinterpret_cast<uintptr_t>(&stack);
-}
-
-uintptr_t TracePC::GetMaxStackOffset() const {
-  return InitialStack - __sancov_lowest_stack;  // Stack grows down
-}
-
-void WarnAboutDeprecatedInstrumentation(const char *flag) {
-  // Use RawPrint because Printf cannot be used on Windows before OutputFile is
-  // initialized.
-  RawPrint(flag);
-  RawPrint(
-      " is no longer supported by libFuzzer.\n"
-      "Please either migrate to a compiler that supports -fsanitize=fuzzer\n"
-      "or use an older version of libFuzzer\n");
-  exit(1);
-}
-
-} // namespace fuzzer
-
-extern "C" {
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-void __sanitizer_cov_trace_pc_guard(uint32_t *Guard) {
-  fuzzer::WarnAboutDeprecatedInstrumentation(
-      "-fsanitize-coverage=trace-pc-guard");
-}
-
-// Best-effort support for -fsanitize-coverage=trace-pc, which is available
-// in both Clang and GCC.
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-void __sanitizer_cov_trace_pc() {
-  fuzzer::WarnAboutDeprecatedInstrumentation("-fsanitize-coverage=trace-pc");
-}
-
-ATTRIBUTE_INTERFACE
-void __sanitizer_cov_trace_pc_guard_init(uint32_t *Start, uint32_t *Stop) {
-  fuzzer::WarnAboutDeprecatedInstrumentation(
-      "-fsanitize-coverage=trace-pc-guard");
-}
-
-ATTRIBUTE_INTERFACE
-void __sanitizer_cov_8bit_counters_init(uint8_t *Start, uint8_t *Stop) {
-  fuzzer::TPC.HandleInline8bitCountersInit(Start, Stop);
-}
-
-ATTRIBUTE_INTERFACE
-void __sanitizer_cov_pcs_init(const uintptr_t *pcs_beg,
-                              const uintptr_t *pcs_end) {
-  fuzzer::TPC.HandlePCsInit(pcs_beg, pcs_end);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-void __sanitizer_cov_trace_pc_indir(uintptr_t Callee) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCallerCallee(PC, Callee);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_cmp8(uint64_t Arg1, uint64_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-// Now the __sanitizer_cov_trace_const_cmp[1248] callbacks just mimic
-// the behaviour of __sanitizer_cov_trace_cmp[1248] ones. This, however,
-// should be changed later to make full use of instrumentation.
-void __sanitizer_cov_trace_const_cmp8(uint64_t Arg1, uint64_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_cmp4(uint32_t Arg1, uint32_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_const_cmp4(uint32_t Arg1, uint32_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_cmp2(uint16_t Arg1, uint16_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_const_cmp2(uint16_t Arg1, uint16_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_cmp1(uint8_t Arg1, uint8_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_const_cmp1(uint8_t Arg1, uint8_t Arg2) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases) {
-  uint64_t N = Cases[0];
-  uint64_t ValSizeInBits = Cases[1];
-  uint64_t *Vals = Cases + 2;
-  // Skip the most common and the most boring case: all switch values are small.
-  // We may want to skip this at compile-time, but it will make the
-  // instrumentation less general.
-  if (Vals[N - 1]  < 256)
-    return;
-  // Also skip small inputs values, they won't give good signal.
-  if (Val < 256)
-    return;
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  size_t i;
-  uint64_t Smaller = 0;
-  uint64_t Larger = ~(uint64_t)0;
-  // Find two switch values such that Smaller < Val < Larger.
-  // Use 0 and 0xfff..f as the defaults.
-  for (i = 0; i < N; i++) {
-    if (Val < Vals[i]) {
-      Larger = Vals[i];
-      break;
-    }
-    if (Val > Vals[i]) Smaller = Vals[i];
-  }
-
-  // Apply HandleCmp to {Val,Smaller} and {Val, Larger},
-  // use i as the PC modifier for HandleCmp.
-  if (ValSizeInBits == 16) {
-    fuzzer::TPC.HandleCmp(PC + 2 * i, static_cast<uint16_t>(Val),
-                          (uint16_t)(Smaller));
-    fuzzer::TPC.HandleCmp(PC + 2 * i + 1, static_cast<uint16_t>(Val),
-                          (uint16_t)(Larger));
-  } else if (ValSizeInBits == 32) {
-    fuzzer::TPC.HandleCmp(PC + 2 * i, static_cast<uint32_t>(Val),
-                          (uint32_t)(Smaller));
-    fuzzer::TPC.HandleCmp(PC + 2 * i + 1, static_cast<uint32_t>(Val),
-                          (uint32_t)(Larger));
-  } else {
-    fuzzer::TPC.HandleCmp(PC + 2*i, Val, Smaller);
-    fuzzer::TPC.HandleCmp(PC + 2*i + 1, Val, Larger);
-  }
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_div4(uint32_t Val) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Val, (uint32_t)0);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_div8(uint64_t Val) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Val, (uint64_t)0);
-}
-
-ATTRIBUTE_INTERFACE
-ATTRIBUTE_NO_SANITIZE_ALL
-ATTRIBUTE_TARGET_POPCNT
-void __sanitizer_cov_trace_gep(uintptr_t Idx) {
-  uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
-  fuzzer::TPC.HandleCmp(PC, Idx, (uintptr_t)0);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_memcmp(void *caller_pc, const void *s1,
-                                  const void *s2, size_t n, int result) {
-  if (!fuzzer::RunningUserCallback) return;
-  if (result == 0) return;  // No reason to mutate.
-  if (n <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/false);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strncmp(void *caller_pc, const char *s1,
-                                   const char *s2, size_t n, int result) {
-  if (!fuzzer::RunningUserCallback) return;
-  if (result == 0) return;  // No reason to mutate.
-  size_t Len1 = fuzzer::InternalStrnlen(s1, n);
-  size_t Len2 = fuzzer::InternalStrnlen(s2, n);
-  n = std::min(n, Len1);
-  n = std::min(n, Len2);
-  if (n <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/true);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcmp(void *caller_pc, const char *s1,
-                                   const char *s2, int result) {
-  if (!fuzzer::RunningUserCallback) return;
-  if (result == 0) return;  // No reason to mutate.
-  size_t N = fuzzer::InternalStrnlen2(s1, s2);
-  if (N <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, N, /*StopAtZero*/true);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strncasecmp(void *called_pc, const char *s1,
-                                       const char *s2, size_t n, int result) {
-  if (!fuzzer::RunningUserCallback) return;
-  return __sanitizer_weak_hook_strncmp(called_pc, s1, s2, n, result);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcasecmp(void *called_pc, const char *s1,
-                                      const char *s2, int result) {
-  if (!fuzzer::RunningUserCallback) return;
-  return __sanitizer_weak_hook_strcmp(called_pc, s1, s2, result);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strstr(void *called_pc, const char *s1,
-                                  const char *s2, char *result) {
-  if (!fuzzer::RunningUserCallback) return;
-  fuzzer::TPC.MMT.Add(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcasestr(void *called_pc, const char *s1,
-                                      const char *s2, char *result) {
-  if (!fuzzer::RunningUserCallback) return;
-  fuzzer::TPC.MMT.Add(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_memmem(void *called_pc, const void *s1, size_t len1,
-                                  const void *s2, size_t len2, void *result) {
-  if (!fuzzer::RunningUserCallback) return;
-  fuzzer::TPC.MMT.Add(reinterpret_cast<const uint8_t *>(s2), len2);
-}
-}  // extern "C"