Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 1055 deletions

diff --git a/gnu/llvm/tools/clang/lib/Driver/SanitizerArgs.cpp b/gnu/llvm/tools/clang/lib/Driver/SanitizerArgs.cpp
deleted file mode 100644
index 1a46073aaa3..00000000000
--- a/gnu/llvm/tools/clang/lib/Driver/SanitizerArgs.cpp
+++ /dev/null
@@ -1,1055 +0,0 @@
-//===--- SanitizerArgs.cpp - Arguments for sanitizer tools  ---------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#include "clang/Driver/SanitizerArgs.h"
-#include "ToolChains/CommonArgs.h"
-#include "clang/Basic/Sanitizers.h"
-#include "clang/Driver/Driver.h"
-#include "clang/Driver/DriverDiagnostic.h"
-#include "clang/Driver/Options.h"
-#include "clang/Driver/ToolChain.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/SpecialCaseList.h"
-#include "llvm/Support/TargetParser.h"
-#include <memory>
-
-using namespace clang;
-using namespace clang::SanitizerKind;
-using namespace clang::driver;
-using namespace llvm::opt;
-
-enum : SanitizerMask {
-  NeedsUbsanRt = Undefined | Integer | ImplicitConversion | Nullability | CFI,
-  NeedsUbsanCxxRt = Vptr | CFI,
-  NotAllowedWithTrap = Vptr,
-  NotAllowedWithMinimalRuntime = Vptr,
-  RequiresPIE = DataFlow | HWAddress | Scudo,
-  NeedsUnwindTables = Address | HWAddress | Thread | Memory | DataFlow,
-  SupportsCoverage = Address | HWAddress | KernelAddress | KernelHWAddress |
-                     Memory | KernelMemory | Leak | Undefined | Integer |
-                     ImplicitConversion | Nullability | DataFlow | Fuzzer |
-                     FuzzerNoLink,
-  RecoverableByDefault = Undefined | Integer | ImplicitConversion | Nullability,
-  Unrecoverable = Unreachable | Return,
-  AlwaysRecoverable = KernelAddress | KernelHWAddress,
-  LegacyFsanitizeRecoverMask = Undefined | Integer,
-  NeedsLTO = CFI,
-  TrappingSupported = (Undefined & ~Vptr) | UnsignedIntegerOverflow |
-                      ImplicitConversion | Nullability | LocalBounds | CFI,
-  TrappingDefault = CFI,
-  CFIClasses =
-      CFIVCall | CFINVCall | CFIMFCall | CFIDerivedCast | CFIUnrelatedCast,
-  CompatibleWithMinimalRuntime = TrappingSupported | Scudo | ShadowCallStack,
-};
-
-enum CoverageFeature {
-  CoverageFunc = 1 << 0,
-  CoverageBB = 1 << 1,
-  CoverageEdge = 1 << 2,
-  CoverageIndirCall = 1 << 3,
-  CoverageTraceBB = 1 << 4,  // Deprecated.
-  CoverageTraceCmp = 1 << 5,
-  CoverageTraceDiv = 1 << 6,
-  CoverageTraceGep = 1 << 7,
-  Coverage8bitCounters = 1 << 8,  // Deprecated.
-  CoverageTracePC = 1 << 9,
-  CoverageTracePCGuard = 1 << 10,
-  CoverageNoPrune = 1 << 11,
-  CoverageInline8bitCounters = 1 << 12,
-  CoveragePCTable = 1 << 13,
-  CoverageStackDepth = 1 << 14,
-};
-
-/// Parse a -fsanitize= or -fno-sanitize= argument's values, diagnosing any
-/// invalid components. Returns a SanitizerMask.
-static SanitizerMask parseArgValues(const Driver &D, const llvm::opt::Arg *A,
-                                    bool DiagnoseErrors);
-
-/// Parse -f(no-)?sanitize-coverage= flag values, diagnosing any invalid
-/// components. Returns OR of members of \c CoverageFeature enumeration.
-static int parseCoverageFeatures(const Driver &D, const llvm::opt::Arg *A);
-
-/// Produce an argument string from ArgList \p Args, which shows how it
-/// provides some sanitizer kind from \p Mask. For example, the argument list
-/// "-fsanitize=thread,vptr -fsanitize=address" with mask \c NeedsUbsanRt
-/// would produce "-fsanitize=vptr".
-static std::string lastArgumentForMask(const Driver &D,
-                                       const llvm::opt::ArgList &Args,
-                                       SanitizerMask Mask);
-
-/// Produce an argument string from argument \p A, which shows how it provides
-/// a value in \p Mask. For instance, the argument
-/// "-fsanitize=address,alignment" with mask \c NeedsUbsanRt would produce
-/// "-fsanitize=alignment".
-static std::string describeSanitizeArg(const llvm::opt::Arg *A,
-                                       SanitizerMask Mask);
-
-/// Produce a string containing comma-separated names of sanitizers in \p
-/// Sanitizers set.
-static std::string toString(const clang::SanitizerSet &Sanitizers);
-
-static void addDefaultBlacklists(const Driver &D, SanitizerMask Kinds,
-                                 std::vector<std::string> &BlacklistFiles) {
-  struct Blacklist {
-    const char *File;
-    SanitizerMask Mask;
-  } Blacklists[] = {{"asan_blacklist.txt", Address},
-                    {"hwasan_blacklist.txt", HWAddress},
-                    {"msan_blacklist.txt", Memory},
-                    {"tsan_blacklist.txt", Thread},
-                    {"dfsan_abilist.txt", DataFlow},
-                    {"cfi_blacklist.txt", CFI},
-                    {"ubsan_blacklist.txt", Undefined | Integer | Nullability}};
-
-  for (auto BL : Blacklists) {
-    if (!(Kinds & BL.Mask))
-      continue;
-
-    clang::SmallString<64> Path(D.ResourceDir);
-    llvm::sys::path::append(Path, "share", BL.File);
-    if (llvm::sys::fs::exists(Path))
-      BlacklistFiles.push_back(Path.str());
-    else if (BL.Mask == CFI)
-      // If cfi_blacklist.txt cannot be found in the resource dir, driver
-      // should fail.
-      D.Diag(clang::diag::err_drv_no_such_file) << Path;
-  }
-}
-
-/// Sets group bits for every group that has at least one representative already
-/// enabled in \p Kinds.
-static SanitizerMask setGroupBits(SanitizerMask Kinds) {
-#define SANITIZER(NAME, ID)
-#define SANITIZER_GROUP(NAME, ID, ALIAS)                                       \
-  if (Kinds & SanitizerKind::ID)                                               \
-    Kinds |= SanitizerKind::ID##Group;
-#include "clang/Basic/Sanitizers.def"
-  return Kinds;
-}
-
-static SanitizerMask parseSanitizeTrapArgs(const Driver &D,
-                                           const llvm::opt::ArgList &Args) {
-  SanitizerMask TrapRemove = 0; // During the loop below, the accumulated set of
-                                // sanitizers disabled by the current sanitizer
-                                // argument or any argument after it.
-  SanitizerMask TrappingKinds = 0;
-  SanitizerMask TrappingSupportedWithGroups = setGroupBits(TrappingSupported);
-
-  for (ArgList::const_reverse_iterator I = Args.rbegin(), E = Args.rend();
-       I != E; ++I) {
-    const auto *Arg = *I;
-    if (Arg->getOption().matches(options::OPT_fsanitize_trap_EQ)) {
-      Arg->claim();
-      SanitizerMask Add = parseArgValues(D, Arg, true);
-      Add &= ~TrapRemove;
-      if (SanitizerMask InvalidValues = Add & ~TrappingSupportedWithGroups) {
-        SanitizerSet S;
-        S.Mask = InvalidValues;
-        D.Diag(diag::err_drv_unsupported_option_argument) << "-fsanitize-trap"
-                                                          << toString(S);
-      }
-      TrappingKinds |= expandSanitizerGroups(Add) & ~TrapRemove;
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_trap_EQ)) {
-      Arg->claim();
-      TrapRemove |= expandSanitizerGroups(parseArgValues(D, Arg, true));
-    } else if (Arg->getOption().matches(
-                   options::OPT_fsanitize_undefined_trap_on_error)) {
-      Arg->claim();
-      TrappingKinds |=
-          expandSanitizerGroups(UndefinedGroup & ~TrapRemove) & ~TrapRemove;
-    } else if (Arg->getOption().matches(
-                   options::OPT_fno_sanitize_undefined_trap_on_error)) {
-      Arg->claim();
-      TrapRemove |= expandSanitizerGroups(UndefinedGroup);
-    }
-  }
-
-  // Apply default trapping behavior.
-  TrappingKinds |= TrappingDefault & ~TrapRemove;
-
-  return TrappingKinds;
-}
-
-bool SanitizerArgs::needsUbsanRt() const {
-  // All of these include ubsan.
-  if (needsAsanRt() || needsMsanRt() || needsHwasanRt() || needsTsanRt() ||
-      needsDfsanRt() || needsLsanRt() || needsCfiDiagRt() ||
-      (needsScudoRt() && !requiresMinimalRuntime()))
-    return false;
-
-  return (Sanitizers.Mask & NeedsUbsanRt & ~TrapSanitizers.Mask) ||
-         CoverageFeatures;
-}
-
-bool SanitizerArgs::needsCfiRt() const {
-  return !(Sanitizers.Mask & CFI & ~TrapSanitizers.Mask) && CfiCrossDso &&
-         !ImplicitCfiRuntime;
-}
-
-bool SanitizerArgs::needsCfiDiagRt() const {
-  return (Sanitizers.Mask & CFI & ~TrapSanitizers.Mask) && CfiCrossDso &&
-         !ImplicitCfiRuntime;
-}
-
-bool SanitizerArgs::requiresPIE() const {
-  return NeedPIE || (Sanitizers.Mask & RequiresPIE);
-}
-
-bool SanitizerArgs::needsUnwindTables() const {
-  return Sanitizers.Mask & NeedsUnwindTables;
-}
-
-bool SanitizerArgs::needsLTO() const { return Sanitizers.Mask & NeedsLTO; }
-
-SanitizerArgs::SanitizerArgs(const ToolChain &TC,
-                             const llvm::opt::ArgList &Args) {
-  SanitizerMask AllRemove = 0;  // During the loop below, the accumulated set of
-                                // sanitizers disabled by the current sanitizer
-                                // argument or any argument after it.
-  SanitizerMask AllAddedKinds = 0;  // Mask of all sanitizers ever enabled by
-                                    // -fsanitize= flags (directly or via group
-                                    // expansion), some of which may be disabled
-                                    // later. Used to carefully prune
-                                    // unused-argument diagnostics.
-  SanitizerMask DiagnosedKinds = 0;  // All Kinds we have diagnosed up to now.
-                                     // Used to deduplicate diagnostics.
-  SanitizerMask Kinds = 0;
-  const SanitizerMask Supported = setGroupBits(TC.getSupportedSanitizers());
-
-  CfiCrossDso = Args.hasFlag(options::OPT_fsanitize_cfi_cross_dso,
-                             options::OPT_fno_sanitize_cfi_cross_dso, false);
-
-  ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
-
-  const Driver &D = TC.getDriver();
-  SanitizerMask TrappingKinds = parseSanitizeTrapArgs(D, Args);
-  SanitizerMask InvalidTrappingKinds = TrappingKinds & NotAllowedWithTrap;
-
-  MinimalRuntime =
-      Args.hasFlag(options::OPT_fsanitize_minimal_runtime,
-                   options::OPT_fno_sanitize_minimal_runtime, MinimalRuntime);
-
-  // The object size sanitizer should not be enabled at -O0.
-  Arg *OptLevel = Args.getLastArg(options::OPT_O_Group);
-  bool RemoveObjectSizeAtO0 =
-      !OptLevel || OptLevel->getOption().matches(options::OPT_O0);
-
-  for (ArgList::const_reverse_iterator I = Args.rbegin(), E = Args.rend();
-       I != E; ++I) {
-    const auto *Arg = *I;
-    if (Arg->getOption().matches(options::OPT_fsanitize_EQ)) {
-      Arg->claim();
-      SanitizerMask Add = parseArgValues(D, Arg, /*AllowGroups=*/true);
-
-      if (RemoveObjectSizeAtO0) {
-        AllRemove |= SanitizerKind::ObjectSize;
-
-        // The user explicitly enabled the object size sanitizer. Warn that
-        // that this does nothing at -O0.
-        if (Add & SanitizerKind::ObjectSize)
-          D.Diag(diag::warn_drv_object_size_disabled_O0)
-              << Arg->getAsString(Args);
-      }
-
-      AllAddedKinds |= expandSanitizerGroups(Add);
-
-      // Avoid diagnosing any sanitizer which is disabled later.
-      Add &= ~AllRemove;
-      // At this point we have not expanded groups, so any unsupported
-      // sanitizers in Add are those which have been explicitly enabled.
-      // Diagnose them.
-      if (SanitizerMask KindsToDiagnose =
-              Add & InvalidTrappingKinds & ~DiagnosedKinds) {
-        std::string Desc = describeSanitizeArg(*I, KindsToDiagnose);
-        D.Diag(diag::err_drv_argument_not_allowed_with)
-            << Desc << "-fsanitize-trap=undefined";
-        DiagnosedKinds |= KindsToDiagnose;
-      }
-      Add &= ~InvalidTrappingKinds;
-
-      if (MinimalRuntime) {
-        if (SanitizerMask KindsToDiagnose =
-                Add & NotAllowedWithMinimalRuntime & ~DiagnosedKinds) {
-          std::string Desc = describeSanitizeArg(*I, KindsToDiagnose);
-          D.Diag(diag::err_drv_argument_not_allowed_with)
-              << Desc << "-fsanitize-minimal-runtime";
-          DiagnosedKinds |= KindsToDiagnose;
-        }
-        Add &= ~NotAllowedWithMinimalRuntime;
-      }
-
-      // FIXME: Make CFI on member function calls compatible with cross-DSO CFI.
-      // There are currently two problems:
-      // - Virtual function call checks need to pass a pointer to the function
-      //   address to llvm.type.test and a pointer to the address point to the
-      //   diagnostic function. Currently we pass the same pointer to both
-      //   places.
-      // - Non-virtual function call checks may need to check multiple type
-      //   identifiers.
-      // Fixing both of those may require changes to the cross-DSO CFI
-      // interface.
-      if (CfiCrossDso && (Add & CFIMFCall & ~DiagnosedKinds)) {
-        D.Diag(diag::err_drv_argument_not_allowed_with)
-            << "-fsanitize=cfi-mfcall"
-            << "-fsanitize-cfi-cross-dso";
-        Add &= ~CFIMFCall;
-        DiagnosedKinds |= CFIMFCall;
-      }
-
-      if (SanitizerMask KindsToDiagnose = Add & ~Supported & ~DiagnosedKinds) {
-        std::string Desc = describeSanitizeArg(*I, KindsToDiagnose);
-        D.Diag(diag::err_drv_unsupported_opt_for_target)
-            << Desc << TC.getTriple().str();
-        DiagnosedKinds |= KindsToDiagnose;
-      }
-      Add &= Supported;
-
-      // Test for -fno-rtti + explicit -fsanitizer=vptr before expanding groups
-      // so we don't error out if -fno-rtti and -fsanitize=undefined were
-      // passed.
-      if ((Add & Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
-        if (const llvm::opt::Arg *NoRTTIArg = TC.getRTTIArg()) {
-          assert(NoRTTIArg->getOption().matches(options::OPT_fno_rtti) &&
-                  "RTTI disabled without -fno-rtti option?");
-          // The user explicitly passed -fno-rtti with -fsanitize=vptr, but
-          // the vptr sanitizer requires RTTI, so this is a user error.
-          D.Diag(diag::err_drv_argument_not_allowed_with)
-              << "-fsanitize=vptr" << NoRTTIArg->getAsString(Args);
-        } else {
-          // The vptr sanitizer requires RTTI, but RTTI is disabled (by
-          // default). Warn that the vptr sanitizer is being disabled.
-          D.Diag(diag::warn_drv_disabling_vptr_no_rtti_default);
-        }
-
-        // Take out the Vptr sanitizer from the enabled sanitizers
-        AllRemove |= Vptr;
-      }
-
-      Add = expandSanitizerGroups(Add);
-      // Group expansion may have enabled a sanitizer which is disabled later.
-      Add &= ~AllRemove;
-      // Silently discard any unsupported sanitizers implicitly enabled through
-      // group expansion.
-      Add &= ~InvalidTrappingKinds;
-      if (MinimalRuntime) {
-        Add &= ~NotAllowedWithMinimalRuntime;
-      }
-      if (CfiCrossDso)
-        Add &= ~CFIMFCall;
-      Add &= Supported;
-
-      if (Add & Fuzzer)
-        Add |= FuzzerNoLink;
-
-      // Enable coverage if the fuzzing flag is set.
-      if (Add & FuzzerNoLink) {
-        CoverageFeatures |= CoverageInline8bitCounters | CoverageIndirCall |
-                            CoverageTraceCmp | CoveragePCTable;
-        // Due to TLS differences, stack depth tracking is only enabled on Linux
-        if (TC.getTriple().isOSLinux())
-          CoverageFeatures |= CoverageStackDepth;
-      }
-
-      Kinds |= Add;
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_EQ)) {
-      Arg->claim();
-      SanitizerMask Remove = parseArgValues(D, Arg, true);
-      AllRemove |= expandSanitizerGroups(Remove);
-    }
-  }
-
-  std::pair<SanitizerMask, SanitizerMask> IncompatibleGroups[] = {
-      std::make_pair(Address, Thread | Memory),
-      std::make_pair(Thread, Memory),
-      std::make_pair(Leak, Thread | Memory),
-      std::make_pair(KernelAddress, Address | Leak | Thread | Memory),
-      std::make_pair(HWAddress, Address | Thread | Memory | KernelAddress),
-      std::make_pair(Efficiency, Address | HWAddress | Leak | Thread | Memory |
-                                     KernelAddress),
-      std::make_pair(Scudo, Address | HWAddress | Leak | Thread | Memory |
-                                KernelAddress | Efficiency),
-      std::make_pair(SafeStack, Address | HWAddress | Leak | Thread | Memory |
-                                    KernelAddress | Efficiency),
-      std::make_pair(KernelHWAddress, Address | HWAddress | Leak | Thread |
-                                          Memory | KernelAddress | Efficiency |
-                                          SafeStack),
-      std::make_pair(KernelMemory, Address | HWAddress | Leak | Thread |
-                                       Memory | KernelAddress | Efficiency |
-                                       Scudo | SafeStack)};
-  // Enable toolchain specific default sanitizers if not explicitly disabled.
-  SanitizerMask Default = TC.getDefaultSanitizers() & ~AllRemove;
-
-  // Disable default sanitizers that are incompatible with explicitly requested
-  // ones.
-  for (auto G : IncompatibleGroups) {
-    SanitizerMask Group = G.first;
-    if ((Default & Group) && (Kinds & G.second))
-      Default &= ~Group;
-  }
-
-  Kinds |= Default;
-
-  // We disable the vptr sanitizer if it was enabled by group expansion but RTTI
-  // is disabled.
-  if ((Kinds & Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
-    Kinds &= ~Vptr;
-  }
-
-  // Check that LTO is enabled if we need it.
-  if ((Kinds & NeedsLTO) && !D.isUsingLTO()) {
-    D.Diag(diag::err_drv_argument_only_allowed_with)
-        << lastArgumentForMask(D, Args, Kinds & NeedsLTO) << "-flto";
-  }
-
-  if ((Kinds & ShadowCallStack) &&
-      TC.getTriple().getArch() == llvm::Triple::aarch64 &&
-      !llvm::AArch64::isX18ReservedByDefault(TC.getTriple()) &&
-      !Args.hasArg(options::OPT_ffixed_x18)) {
-    D.Diag(diag::err_drv_argument_only_allowed_with)
-        << lastArgumentForMask(D, Args, Kinds & ShadowCallStack)
-        << "-ffixed-x18";
-  }
-
-  // Report error if there are non-trapping sanitizers that require
-  // c++abi-specific  parts of UBSan runtime, and they are not provided by the
-  // toolchain. We don't have a good way to check the latter, so we just
-  // check if the toolchan supports vptr.
-  if (~Supported & Vptr) {
-    SanitizerMask KindsToDiagnose = Kinds & ~TrappingKinds & NeedsUbsanCxxRt;
-    // The runtime library supports the Microsoft C++ ABI, but only well enough
-    // for CFI. FIXME: Remove this once we support vptr on Windows.
-    if (TC.getTriple().isOSWindows())
-      KindsToDiagnose &= ~CFI;
-    if (KindsToDiagnose) {
-      SanitizerSet S;
-      S.Mask = KindsToDiagnose;
-      D.Diag(diag::err_drv_unsupported_opt_for_target)
-          << ("-fno-sanitize-trap=" + toString(S)) << TC.getTriple().str();
-      Kinds &= ~KindsToDiagnose;
-    }
-  }
-
-  // Warn about incompatible groups of sanitizers.
-  for (auto G : IncompatibleGroups) {
-    SanitizerMask Group = G.first;
-    if (Kinds & Group) {
-      if (SanitizerMask Incompatible = Kinds & G.second) {
-        D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-            << lastArgumentForMask(D, Args, Group)
-            << lastArgumentForMask(D, Args, Incompatible);
-        Kinds &= ~Incompatible;
-      }
-    }
-  }
-  // FIXME: Currently -fsanitize=leak is silently ignored in the presence of
-  // -fsanitize=address. Perhaps it should print an error, or perhaps
-  // -f(-no)sanitize=leak should change whether leak detection is enabled by
-  // default in ASan?
-
-  // Parse -f(no-)?sanitize-recover flags.
-  SanitizerMask RecoverableKinds = RecoverableByDefault | AlwaysRecoverable;
-  SanitizerMask DiagnosedUnrecoverableKinds = 0;
-  SanitizerMask DiagnosedAlwaysRecoverableKinds = 0;
-  for (const auto *Arg : Args) {
-    const char *DeprecatedReplacement = nullptr;
-    if (Arg->getOption().matches(options::OPT_fsanitize_recover)) {
-      DeprecatedReplacement =
-          "-fsanitize-recover=undefined,integer' or '-fsanitize-recover=all";
-      RecoverableKinds |= expandSanitizerGroups(LegacyFsanitizeRecoverMask);
-      Arg->claim();
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_recover)) {
-      DeprecatedReplacement = "-fno-sanitize-recover=undefined,integer' or "
-                              "'-fno-sanitize-recover=all";
-      RecoverableKinds &= ~expandSanitizerGroups(LegacyFsanitizeRecoverMask);
-      Arg->claim();
-    } else if (Arg->getOption().matches(options::OPT_fsanitize_recover_EQ)) {
-      SanitizerMask Add = parseArgValues(D, Arg, true);
-      // Report error if user explicitly tries to recover from unrecoverable
-      // sanitizer.
-      if (SanitizerMask KindsToDiagnose =
-              Add & Unrecoverable & ~DiagnosedUnrecoverableKinds) {
-        SanitizerSet SetToDiagnose;
-        SetToDiagnose.Mask |= KindsToDiagnose;
-        D.Diag(diag::err_drv_unsupported_option_argument)
-            << Arg->getOption().getName() << toString(SetToDiagnose);
-        DiagnosedUnrecoverableKinds |= KindsToDiagnose;
-      }
-      RecoverableKinds |= expandSanitizerGroups(Add);
-      Arg->claim();
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_recover_EQ)) {
-      SanitizerMask Remove = parseArgValues(D, Arg, true);
-      // Report error if user explicitly tries to disable recovery from
-      // always recoverable sanitizer.
-      if (SanitizerMask KindsToDiagnose =
-              Remove & AlwaysRecoverable & ~DiagnosedAlwaysRecoverableKinds) {
-        SanitizerSet SetToDiagnose;
-        SetToDiagnose.Mask |= KindsToDiagnose;
-        D.Diag(diag::err_drv_unsupported_option_argument)
-            << Arg->getOption().getName() << toString(SetToDiagnose);
-        DiagnosedAlwaysRecoverableKinds |= KindsToDiagnose;
-      }
-      RecoverableKinds &= ~expandSanitizerGroups(Remove);
-      Arg->claim();
-    }
-    if (DeprecatedReplacement) {
-      D.Diag(diag::warn_drv_deprecated_arg) << Arg->getAsString(Args)
-                                            << DeprecatedReplacement;
-    }
-  }
-  RecoverableKinds &= Kinds;
-  RecoverableKinds &= ~Unrecoverable;
-
-  TrappingKinds &= Kinds;
-  RecoverableKinds &= ~TrappingKinds;
-
-  // Setup blacklist files.
-  // Add default blacklist from resource directory.
-  addDefaultBlacklists(D, Kinds, BlacklistFiles);
-  // Parse -f(no-)sanitize-blacklist options.
-  for (const auto *Arg : Args) {
-    if (Arg->getOption().matches(options::OPT_fsanitize_blacklist)) {
-      Arg->claim();
-      std::string BLPath = Arg->getValue();
-      if (llvm::sys::fs::exists(BLPath)) {
-        BlacklistFiles.push_back(BLPath);
-        ExtraDeps.push_back(BLPath);
-      } else {
-        D.Diag(clang::diag::err_drv_no_such_file) << BLPath;
-      }
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_blacklist)) {
-      Arg->claim();
-      BlacklistFiles.clear();
-      ExtraDeps.clear();
-    }
-  }
-  // Validate blacklists format.
-  {
-    std::string BLError;
-    std::unique_ptr<llvm::SpecialCaseList> SCL(
-        llvm::SpecialCaseList::create(BlacklistFiles, BLError));
-    if (!SCL.get())
-      D.Diag(clang::diag::err_drv_malformed_sanitizer_blacklist) << BLError;
-  }
-
-  // Parse -f[no-]sanitize-memory-track-origins[=level] options.
-  if (AllAddedKinds & Memory) {
-    if (Arg *A =
-            Args.getLastArg(options::OPT_fsanitize_memory_track_origins_EQ,
-                            options::OPT_fsanitize_memory_track_origins,
-                            options::OPT_fno_sanitize_memory_track_origins)) {
-      if (A->getOption().matches(options::OPT_fsanitize_memory_track_origins)) {
-        MsanTrackOrigins = 2;
-      } else if (A->getOption().matches(
-                     options::OPT_fno_sanitize_memory_track_origins)) {
-        MsanTrackOrigins = 0;
-      } else {
-        StringRef S = A->getValue();
-        if (S.getAsInteger(0, MsanTrackOrigins) || MsanTrackOrigins < 0 ||
-            MsanTrackOrigins > 2) {
-          D.Diag(clang::diag::err_drv_invalid_value) << A->getAsString(Args) << S;
-        }
-      }
-    }
-    MsanUseAfterDtor =
-        Args.hasFlag(options::OPT_fsanitize_memory_use_after_dtor,
-                     options::OPT_fno_sanitize_memory_use_after_dtor,
-                     MsanUseAfterDtor);
-    NeedPIE |= !(TC.getTriple().isOSLinux() &&
-                 TC.getTriple().getArch() == llvm::Triple::x86_64);
-  } else {
-    MsanUseAfterDtor = false;
-  }
-
-  if (AllAddedKinds & Thread) {
-    TsanMemoryAccess = Args.hasFlag(options::OPT_fsanitize_thread_memory_access,
-                                    options::OPT_fno_sanitize_thread_memory_access,
-                                    TsanMemoryAccess);
-    TsanFuncEntryExit = Args.hasFlag(options::OPT_fsanitize_thread_func_entry_exit,
-                                     options::OPT_fno_sanitize_thread_func_entry_exit,
-                                     TsanFuncEntryExit);
-    TsanAtomics = Args.hasFlag(options::OPT_fsanitize_thread_atomics,
-                               options::OPT_fno_sanitize_thread_atomics,
-                               TsanAtomics);
-  }
-
-  if (AllAddedKinds & CFI) {
-    // Without PIE, external function address may resolve to a PLT record, which
-    // can not be verified by the target module.
-    NeedPIE |= CfiCrossDso;
-    CfiICallGeneralizePointers =
-        Args.hasArg(options::OPT_fsanitize_cfi_icall_generalize_pointers);
-
-    if (CfiCrossDso && CfiICallGeneralizePointers)
-      D.Diag(diag::err_drv_argument_not_allowed_with)
-          << "-fsanitize-cfi-cross-dso"
-          << "-fsanitize-cfi-icall-generalize-pointers";
-  }
-
-  Stats = Args.hasFlag(options::OPT_fsanitize_stats,
-                       options::OPT_fno_sanitize_stats, false);
-
-  if (MinimalRuntime) {
-    SanitizerMask IncompatibleMask =
-        Kinds & ~setGroupBits(CompatibleWithMinimalRuntime);
-    if (IncompatibleMask)
-      D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-          << "-fsanitize-minimal-runtime"
-          << lastArgumentForMask(D, Args, IncompatibleMask);
-
-    SanitizerMask NonTrappingCfi = Kinds & CFI & ~TrappingKinds;
-    if (NonTrappingCfi)
-      D.Diag(clang::diag::err_drv_argument_only_allowed_with)
-          << "fsanitize-minimal-runtime"
-          << "fsanitize-trap=cfi";
-  }
-
-  // Parse -f(no-)?sanitize-coverage flags if coverage is supported by the
-  // enabled sanitizers.
-  for (const auto *Arg : Args) {
-    if (Arg->getOption().matches(options::OPT_fsanitize_coverage)) {
-      int LegacySanitizeCoverage;
-      if (Arg->getNumValues() == 1 &&
-          !StringRef(Arg->getValue(0))
-               .getAsInteger(0, LegacySanitizeCoverage)) {
-        CoverageFeatures = 0;
-        Arg->claim();
-        if (LegacySanitizeCoverage != 0) {
-          D.Diag(diag::warn_drv_deprecated_arg)
-              << Arg->getAsString(Args) << "-fsanitize-coverage=trace-pc-guard";
-        }
-        continue;
-      }
-      CoverageFeatures |= parseCoverageFeatures(D, Arg);
-
-      // Disable coverage and not claim the flags if there is at least one
-      // non-supporting sanitizer.
-      if (!(AllAddedKinds & ~AllRemove & ~setGroupBits(SupportsCoverage))) {
-        Arg->claim();
-      } else {
-        CoverageFeatures = 0;
-      }
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_coverage)) {
-      Arg->claim();
-      CoverageFeatures &= ~parseCoverageFeatures(D, Arg);
-    }
-  }
-  // Choose at most one coverage type: function, bb, or edge.
-  if ((CoverageFeatures & CoverageFunc) && (CoverageFeatures & CoverageBB))
-    D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-        << "-fsanitize-coverage=func"
-        << "-fsanitize-coverage=bb";
-  if ((CoverageFeatures & CoverageFunc) && (CoverageFeatures & CoverageEdge))
-    D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-        << "-fsanitize-coverage=func"
-        << "-fsanitize-coverage=edge";
-  if ((CoverageFeatures & CoverageBB) && (CoverageFeatures & CoverageEdge))
-    D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-        << "-fsanitize-coverage=bb"
-        << "-fsanitize-coverage=edge";
-  // Basic block tracing and 8-bit counters require some type of coverage
-  // enabled.
-  if (CoverageFeatures & CoverageTraceBB)
-    D.Diag(clang::diag::warn_drv_deprecated_arg)
-        << "-fsanitize-coverage=trace-bb"
-        << "-fsanitize-coverage=trace-pc-guard";
-  if (CoverageFeatures & Coverage8bitCounters)
-    D.Diag(clang::diag::warn_drv_deprecated_arg)
-        << "-fsanitize-coverage=8bit-counters"
-        << "-fsanitize-coverage=trace-pc-guard";
-
-  int InsertionPointTypes = CoverageFunc | CoverageBB | CoverageEdge;
-  int InstrumentationTypes =
-      CoverageTracePC | CoverageTracePCGuard | CoverageInline8bitCounters;
-  if ((CoverageFeatures & InsertionPointTypes) &&
-      !(CoverageFeatures & InstrumentationTypes)) {
-    D.Diag(clang::diag::warn_drv_deprecated_arg)
-        << "-fsanitize-coverage=[func|bb|edge]"
-        << "-fsanitize-coverage=[func|bb|edge],[trace-pc-guard|trace-pc]";
-  }
-
-  // trace-pc w/o func/bb/edge implies edge.
-  if (!(CoverageFeatures & InsertionPointTypes)) {
-    if (CoverageFeatures &
-        (CoverageTracePC | CoverageTracePCGuard | CoverageInline8bitCounters))
-      CoverageFeatures |= CoverageEdge;
-
-    if (CoverageFeatures & CoverageStackDepth)
-      CoverageFeatures |= CoverageFunc;
-  }
-
-  SharedRuntime =
-      Args.hasFlag(options::OPT_shared_libsan, options::OPT_static_libsan,
-                   TC.getTriple().isAndroid() || TC.getTriple().isOSFuchsia() ||
-                       TC.getTriple().isOSDarwin());
-
-  ImplicitCfiRuntime = TC.getTriple().isAndroid();
-
-  if (AllAddedKinds & Address) {
-    NeedPIE |= TC.getTriple().isOSFuchsia();
-    if (Arg *A =
-            Args.getLastArg(options::OPT_fsanitize_address_field_padding)) {
-        StringRef S = A->getValue();
-        // Legal values are 0 and 1, 2, but in future we may add more levels.
-        if (S.getAsInteger(0, AsanFieldPadding) || AsanFieldPadding < 0 ||
-            AsanFieldPadding > 2) {
-          D.Diag(clang::diag::err_drv_invalid_value) << A->getAsString(Args) << S;
-        }
-    }
-
-    if (Arg *WindowsDebugRTArg =
-            Args.getLastArg(options::OPT__SLASH_MTd, options::OPT__SLASH_MT,
-                            options::OPT__SLASH_MDd, options::OPT__SLASH_MD,
-                            options::OPT__SLASH_LDd, options::OPT__SLASH_LD)) {
-      switch (WindowsDebugRTArg->getOption().getID()) {
-      case options::OPT__SLASH_MTd:
-      case options::OPT__SLASH_MDd:
-      case options::OPT__SLASH_LDd:
-        D.Diag(clang::diag::err_drv_argument_not_allowed_with)
-            << WindowsDebugRTArg->getAsString(Args)
-            << lastArgumentForMask(D, Args, Address);
-        D.Diag(clang::diag::note_drv_address_sanitizer_debug_runtime);
-      }
-    }
-
-    AsanUseAfterScope = Args.hasFlag(
-        options::OPT_fsanitize_address_use_after_scope,
-        options::OPT_fno_sanitize_address_use_after_scope, AsanUseAfterScope);
-
-    AsanPoisonCustomArrayCookie = Args.hasFlag(
-        options::OPT_fsanitize_address_poison_custom_array_cookie,
-        options::OPT_fno_sanitize_address_poison_custom_array_cookie,
-        AsanPoisonCustomArrayCookie);
-
-    // As a workaround for a bug in gold 2.26 and earlier, dead stripping of
-    // globals in ASan is disabled by default on ELF targets.
-    // See https://sourceware.org/bugzilla/show_bug.cgi?id=19002
-    AsanGlobalsDeadStripping =
-        !TC.getTriple().isOSBinFormatELF() || TC.getTriple().isOSFuchsia() ||
-        Args.hasArg(options::OPT_fsanitize_address_globals_dead_stripping);
-
-    AsanUseOdrIndicator =
-        Args.hasFlag(options::OPT_fsanitize_address_use_odr_indicator,
-                     options::OPT_fno_sanitize_address_use_odr_indicator,
-                     AsanUseOdrIndicator);
-  } else {
-    AsanUseAfterScope = false;
-  }
-
-  if (AllAddedKinds & HWAddress) {
-    if (Arg *HwasanAbiArg =
-            Args.getLastArg(options::OPT_fsanitize_hwaddress_abi_EQ)) {
-      HwasanAbi = HwasanAbiArg->getValue();
-      if (HwasanAbi != "platform" && HwasanAbi != "interceptor")
-        D.Diag(clang::diag::err_drv_invalid_value)
-            << HwasanAbiArg->getAsString(Args) << HwasanAbi;
-    } else {
-      HwasanAbi = "interceptor";
-    }
-  }
-
-  if (AllAddedKinds & SafeStack) {
-    // SafeStack runtime is built into the system on Fuchsia.
-    SafeStackRuntime = !TC.getTriple().isOSFuchsia();
-  }
-
-  // Parse -link-cxx-sanitizer flag.
-  LinkCXXRuntimes =
-      Args.hasArg(options::OPT_fsanitize_link_cxx_runtime) || D.CCCIsCXX();
-
-  // Finally, initialize the set of available and recoverable sanitizers.
-  Sanitizers.Mask |= Kinds;
-  RecoverableSanitizers.Mask |= RecoverableKinds;
-  TrapSanitizers.Mask |= TrappingKinds;
-  assert(!(RecoverableKinds & TrappingKinds) &&
-         "Overlap between recoverable and trapping sanitizers");
-}
-
-static std::string toString(const clang::SanitizerSet &Sanitizers) {
-  std::string Res;
-#define SANITIZER(NAME, ID)                                                    \
-  if (Sanitizers.has(ID)) {                                                    \
-    if (!Res.empty())                                                          \
-      Res += ",";                                                              \
-    Res += NAME;                                                               \
-  }
-#include "clang/Basic/Sanitizers.def"
-  return Res;
-}
-
-static void addIncludeLinkerOption(const ToolChain &TC,
-                                   const llvm::opt::ArgList &Args,
-                                   llvm::opt::ArgStringList &CmdArgs,
-                                   StringRef SymbolName) {
-  SmallString<64> LinkerOptionFlag;
-  LinkerOptionFlag = "--linker-option=/include:";
-  if (TC.getTriple().getArch() == llvm::Triple::x86) {
-    // Win32 mangles C function names with a '_' prefix.
-    LinkerOptionFlag += '_';
-  }
-  LinkerOptionFlag += SymbolName;
-  CmdArgs.push_back(Args.MakeArgString(LinkerOptionFlag));
-}
-
-void SanitizerArgs::addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args,
-                            llvm::opt::ArgStringList &CmdArgs,
-                            types::ID InputType) const {
-  // NVPTX doesn't currently support sanitizers.  Bailing out here means that
-  // e.g. -fsanitize=address applies only to host code, which is what we want
-  // for now.
-  if (TC.getTriple().isNVPTX())
-    return;
-
-  // Translate available CoverageFeatures to corresponding clang-cc1 flags.
-  // Do it even if Sanitizers.empty() since some forms of coverage don't require
-  // sanitizers.
-  std::pair<int, const char *> CoverageFlags[] = {
-    std::make_pair(CoverageFunc, "-fsanitize-coverage-type=1"),
-    std::make_pair(CoverageBB, "-fsanitize-coverage-type=2"),
-    std::make_pair(CoverageEdge, "-fsanitize-coverage-type=3"),
-    std::make_pair(CoverageIndirCall, "-fsanitize-coverage-indirect-calls"),
-    std::make_pair(CoverageTraceBB, "-fsanitize-coverage-trace-bb"),
-    std::make_pair(CoverageTraceCmp, "-fsanitize-coverage-trace-cmp"),
-    std::make_pair(CoverageTraceDiv, "-fsanitize-coverage-trace-div"),
-    std::make_pair(CoverageTraceGep, "-fsanitize-coverage-trace-gep"),
-    std::make_pair(Coverage8bitCounters, "-fsanitize-coverage-8bit-counters"),
-    std::make_pair(CoverageTracePC, "-fsanitize-coverage-trace-pc"),
-    std::make_pair(CoverageTracePCGuard, "-fsanitize-coverage-trace-pc-guard"),
-    std::make_pair(CoverageInline8bitCounters, "-fsanitize-coverage-inline-8bit-counters"),
-    std::make_pair(CoveragePCTable, "-fsanitize-coverage-pc-table"),
-    std::make_pair(CoverageNoPrune, "-fsanitize-coverage-no-prune"),
-    std::make_pair(CoverageStackDepth, "-fsanitize-coverage-stack-depth")};
-  for (auto F : CoverageFlags) {
-    if (CoverageFeatures & F.first)
-      CmdArgs.push_back(F.second);
-  }
-
-  if (TC.getTriple().isOSWindows() && needsUbsanRt()) {
-    // Instruct the code generator to embed linker directives in the object file
-    // that cause the required runtime libraries to be linked.
-    CmdArgs.push_back(Args.MakeArgString(
-        "--dependent-lib=" + TC.getCompilerRT(Args, "ubsan_standalone")));
-    if (types::isCXX(InputType))
-      CmdArgs.push_back(Args.MakeArgString(
-          "--dependent-lib=" + TC.getCompilerRT(Args, "ubsan_standalone_cxx")));
-  }
-  if (TC.getTriple().isOSWindows() && needsStatsRt()) {
-    CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
-                                         TC.getCompilerRT(Args, "stats_client")));
-
-    // The main executable must export the stats runtime.
-    // FIXME: Only exporting from the main executable (e.g. based on whether the
-    // translation unit defines main()) would save a little space, but having
-    // multiple copies of the runtime shouldn't hurt.
-    CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
-                                         TC.getCompilerRT(Args, "stats")));
-    addIncludeLinkerOption(TC, Args, CmdArgs, "__sanitizer_stats_register");
-  }
-
-  if (Sanitizers.empty())
-    return;
-  CmdArgs.push_back(Args.MakeArgString("-fsanitize=" + toString(Sanitizers)));
-
-  if (!RecoverableSanitizers.empty())
-    CmdArgs.push_back(Args.MakeArgString("-fsanitize-recover=" +
-                                         toString(RecoverableSanitizers)));
-
-  if (!TrapSanitizers.empty())
-    CmdArgs.push_back(
-        Args.MakeArgString("-fsanitize-trap=" + toString(TrapSanitizers)));
-
-  for (const auto &BLPath : BlacklistFiles) {
-    SmallString<64> BlacklistOpt("-fsanitize-blacklist=");
-    BlacklistOpt += BLPath;
-    CmdArgs.push_back(Args.MakeArgString(BlacklistOpt));
-  }
-  for (const auto &Dep : ExtraDeps) {
-    SmallString<64> ExtraDepOpt("-fdepfile-entry=");
-    ExtraDepOpt += Dep;
-    CmdArgs.push_back(Args.MakeArgString(ExtraDepOpt));
-  }
-
-  if (MsanTrackOrigins)
-    CmdArgs.push_back(Args.MakeArgString("-fsanitize-memory-track-origins=" +
-                                         Twine(MsanTrackOrigins)));
-
-  if (MsanUseAfterDtor)
-    CmdArgs.push_back("-fsanitize-memory-use-after-dtor");
-
-  // FIXME: Pass these parameters as function attributes, not as -llvm flags.
-  if (!TsanMemoryAccess) {
-    CmdArgs.push_back("-mllvm");
-    CmdArgs.push_back("-tsan-instrument-memory-accesses=0");
-    CmdArgs.push_back("-mllvm");
-    CmdArgs.push_back("-tsan-instrument-memintrinsics=0");
-  }
-  if (!TsanFuncEntryExit) {
-    CmdArgs.push_back("-mllvm");
-    CmdArgs.push_back("-tsan-instrument-func-entry-exit=0");
-  }
-  if (!TsanAtomics) {
-    CmdArgs.push_back("-mllvm");
-    CmdArgs.push_back("-tsan-instrument-atomics=0");
-  }
-
-  if (CfiCrossDso)
-    CmdArgs.push_back("-fsanitize-cfi-cross-dso");
-
-  if (CfiICallGeneralizePointers)
-    CmdArgs.push_back("-fsanitize-cfi-icall-generalize-pointers");
-
-  if (Stats)
-    CmdArgs.push_back("-fsanitize-stats");
-
-  if (MinimalRuntime)
-    CmdArgs.push_back("-fsanitize-minimal-runtime");
-
-  if (AsanFieldPadding)
-    CmdArgs.push_back(Args.MakeArgString("-fsanitize-address-field-padding=" +
-                                         Twine(AsanFieldPadding)));
-
-  if (AsanUseAfterScope)
-    CmdArgs.push_back("-fsanitize-address-use-after-scope");
-
-  if (AsanPoisonCustomArrayCookie)
-    CmdArgs.push_back("-fsanitize-address-poison-custom-array-cookie");
-
-  if (AsanGlobalsDeadStripping)
-    CmdArgs.push_back("-fsanitize-address-globals-dead-stripping");
-
-  if (AsanUseOdrIndicator)
-    CmdArgs.push_back("-fsanitize-address-use-odr-indicator");
-
-  if (!HwasanAbi.empty()) {
-    CmdArgs.push_back("-default-function-attr");
-    CmdArgs.push_back(Args.MakeArgString("hwasan-abi=" + HwasanAbi));
-  }
-
-  // MSan: Workaround for PR16386.
-  // ASan: This is mainly to help LSan with cases such as
-  // https://github.com/google/sanitizers/issues/373
-  // We can't make this conditional on -fsanitize=leak, as that flag shouldn't
-  // affect compilation.
-  if (Sanitizers.has(Memory) || Sanitizers.has(Address))
-    CmdArgs.push_back("-fno-assume-sane-operator-new");
-
-  // Require -fvisibility= flag on non-Windows when compiling if vptr CFI is
-  // enabled.
-  if (Sanitizers.hasOneOf(CFIClasses) && !TC.getTriple().isOSWindows() &&
-      !Args.hasArg(options::OPT_fvisibility_EQ)) {
-    TC.getDriver().Diag(clang::diag::err_drv_argument_only_allowed_with)
-        << lastArgumentForMask(TC.getDriver(), Args,
-                               Sanitizers.Mask & CFIClasses)
-        << "-fvisibility=";
-  }
-}
-
-SanitizerMask parseArgValues(const Driver &D, const llvm::opt::Arg *A,
-                             bool DiagnoseErrors) {
-  assert((A->getOption().matches(options::OPT_fsanitize_EQ) ||
-          A->getOption().matches(options::OPT_fno_sanitize_EQ) ||
-          A->getOption().matches(options::OPT_fsanitize_recover_EQ) ||
-          A->getOption().matches(options::OPT_fno_sanitize_recover_EQ) ||
-          A->getOption().matches(options::OPT_fsanitize_trap_EQ) ||
-          A->getOption().matches(options::OPT_fno_sanitize_trap_EQ)) &&
-         "Invalid argument in parseArgValues!");
-  SanitizerMask Kinds = 0;
-  for (int i = 0, n = A->getNumValues(); i != n; ++i) {
-    const char *Value = A->getValue(i);
-    SanitizerMask Kind;
-    // Special case: don't accept -fsanitize=all.
-    if (A->getOption().matches(options::OPT_fsanitize_EQ) &&
-        0 == strcmp("all", Value))
-      Kind = 0;
-    // Similarly, don't accept -fsanitize=efficiency-all.
-    else if (A->getOption().matches(options::OPT_fsanitize_EQ) &&
-        0 == strcmp("efficiency-all", Value))
-      Kind = 0;
-    else
-      Kind = parseSanitizerValue(Value, /*AllowGroups=*/true);
-
-    if (Kind)
-      Kinds |= Kind;
-    else if (DiagnoseErrors)
-      D.Diag(clang::diag::err_drv_unsupported_option_argument)
-          << A->getOption().getName() << Value;
-  }
-  return Kinds;
-}
-
-int parseCoverageFeatures(const Driver &D, const llvm::opt::Arg *A) {
-  assert(A->getOption().matches(options::OPT_fsanitize_coverage) ||
-         A->getOption().matches(options::OPT_fno_sanitize_coverage));
-  int Features = 0;
-  for (int i = 0, n = A->getNumValues(); i != n; ++i) {
-    const char *Value = A->getValue(i);
-    int F = llvm::StringSwitch<int>(Value)
-        .Case("func", CoverageFunc)
-        .Case("bb", CoverageBB)
-        .Case("edge", CoverageEdge)
-        .Case("indirect-calls", CoverageIndirCall)
-        .Case("trace-bb", CoverageTraceBB)
-        .Case("trace-cmp", CoverageTraceCmp)
-        .Case("trace-div", CoverageTraceDiv)
-        .Case("trace-gep", CoverageTraceGep)
-        .Case("8bit-counters", Coverage8bitCounters)
-        .Case("trace-pc", CoverageTracePC)
-        .Case("trace-pc-guard", CoverageTracePCGuard)
-        .Case("no-prune", CoverageNoPrune)
-        .Case("inline-8bit-counters", CoverageInline8bitCounters)
-        .Case("pc-table", CoveragePCTable)
-        .Case("stack-depth", CoverageStackDepth)
-        .Default(0);
-    if (F == 0)
-      D.Diag(clang::diag::err_drv_unsupported_option_argument)
-          << A->getOption().getName() << Value;
-    Features |= F;
-  }
-  return Features;
-}
-
-std::string lastArgumentForMask(const Driver &D, const llvm::opt::ArgList &Args,
-                                SanitizerMask Mask) {
-  for (llvm::opt::ArgList::const_reverse_iterator I = Args.rbegin(),
-                                                  E = Args.rend();
-       I != E; ++I) {
-    const auto *Arg = *I;
-    if (Arg->getOption().matches(options::OPT_fsanitize_EQ)) {
-      SanitizerMask AddKinds =
-          expandSanitizerGroups(parseArgValues(D, Arg, false));
-      if (AddKinds & Mask)
-        return describeSanitizeArg(Arg, Mask);
-    } else if (Arg->getOption().matches(options::OPT_fno_sanitize_EQ)) {
-      SanitizerMask RemoveKinds =
-          expandSanitizerGroups(parseArgValues(D, Arg, false));
-      Mask &= ~RemoveKinds;
-    }
-  }
-  llvm_unreachable("arg list didn't provide expected value");
-}
-
-std::string describeSanitizeArg(const llvm::opt::Arg *A, SanitizerMask Mask) {
-  assert(A->getOption().matches(options::OPT_fsanitize_EQ)
-         && "Invalid argument in describeSanitizerArg!");
-
-  std::string Sanitizers;
-  for (int i = 0, n = A->getNumValues(); i != n; ++i) {
-    if (expandSanitizerGroups(
-            parseSanitizerValue(A->getValue(i), /*AllowGroups=*/true)) &
-        Mask) {
-      if (!Sanitizers.empty())
-        Sanitizers += ",";
-      Sanitizers += A->getValue(i);
-    }
-  }
-
-  assert(!Sanitizers.empty() && "arg didn't provide expected value");
-  return "-fsanitize=" + Sanitizers;
-}