YDB Import 588

1384556be6811c00a4098d426b8eda9be6d2a541

1 files changed, 0 insertions, 2756 deletions

diff --git a/contrib/libs/clang14/lib/CodeGen/CodeGenFunction.cpp b/contrib/libs/clang14/lib/CodeGen/CodeGenFunction.cpp
deleted file mode 100644
index 2cb0a5543c4..00000000000
--- a/contrib/libs/clang14/lib/CodeGen/CodeGenFunction.cpp
+++ /dev/null
@@ -1,2756 +0,0 @@
-//===--- CodeGenFunction.cpp - Emit LLVM Code from ASTs for a Function ----===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This coordinates the per-function state used while generating code.
-//
-//===----------------------------------------------------------------------===//
-
-#include "CodeGenFunction.h"
-#include "CGBlocks.h"
-#include "CGCUDARuntime.h"
-#include "CGCXXABI.h"
-#include "CGCleanup.h"
-#include "CGDebugInfo.h"
-#include "CGOpenMPRuntime.h"
-#include "CodeGenModule.h"
-#include "CodeGenPGO.h"
-#include "TargetInfo.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/ASTLambda.h"
-#include "clang/AST/Attr.h"
-#include "clang/AST/Decl.h"
-#include "clang/AST/DeclCXX.h"
-#include "clang/AST/Expr.h"
-#include "clang/AST/StmtCXX.h"
-#include "clang/AST/StmtObjC.h"
-#include "clang/Basic/Builtins.h"
-#include "clang/Basic/CodeGenOptions.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/CodeGen/CGFunctionInfo.h"
-#include "clang/Frontend/FrontendDiagnostic.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/Dominators.h"
-#include "llvm/IR/FPEnv.h"
-#include "llvm/IR/IntrinsicInst.h"
-#include "llvm/IR/Intrinsics.h"
-#include "llvm/IR/MDBuilder.h"
-#include "llvm/IR/Operator.h"
-#include "llvm/Support/CRC.h"
-#include "llvm/Transforms/Scalar/LowerExpectIntrinsic.h"
-#include "llvm/Transforms/Utils/PromoteMemToReg.h"
-
-using namespace clang;
-using namespace CodeGen;
-
-/// shouldEmitLifetimeMarkers - Decide whether we need emit the life-time
-/// markers.
-static bool shouldEmitLifetimeMarkers(const CodeGenOptions &CGOpts,
-                                      const LangOptions &LangOpts) {
-  if (CGOpts.DisableLifetimeMarkers)
-    return false;
-
-  // Sanitizers may use markers.
-  if (CGOpts.SanitizeAddressUseAfterScope ||
-      LangOpts.Sanitize.has(SanitizerKind::HWAddress) ||
-      LangOpts.Sanitize.has(SanitizerKind::Memory))
-    return true;
-
-  // For now, only in optimized builds.
-  return CGOpts.OptimizationLevel != 0;
-}
-
-CodeGenFunction::CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext)
-    : CodeGenTypeCache(cgm), CGM(cgm), Target(cgm.getTarget()),
-      Builder(cgm, cgm.getModule().getContext(), llvm::ConstantFolder(),
-              CGBuilderInserterTy(this)),
-      SanOpts(CGM.getLangOpts().Sanitize), CurFPFeatures(CGM.getLangOpts()),
-      DebugInfo(CGM.getModuleDebugInfo()), PGO(cgm),
-      ShouldEmitLifetimeMarkers(
-          shouldEmitLifetimeMarkers(CGM.getCodeGenOpts(), CGM.getLangOpts())) {
-  if (!suppressNewContext)
-    CGM.getCXXABI().getMangleContext().startNewFunction();
-  EHStack.setCGF(this);
-
-  SetFastMathFlags(CurFPFeatures);
-}
-
-CodeGenFunction::~CodeGenFunction() {
-  assert(LifetimeExtendedCleanupStack.empty() && "failed to emit a cleanup");
-
-  if (getLangOpts().OpenMP && CurFn)
-    CGM.getOpenMPRuntime().functionFinished(*this);
-
-  // If we have an OpenMPIRBuilder we want to finalize functions (incl.
-  // outlining etc) at some point. Doing it once the function codegen is done
-  // seems to be a reasonable spot. We do it here, as opposed to the deletion
-  // time of the CodeGenModule, because we have to ensure the IR has not yet
-  // been "emitted" to the outside, thus, modifications are still sensible.
-  if (CGM.getLangOpts().OpenMPIRBuilder && CurFn)
-    CGM.getOpenMPRuntime().getOMPBuilder().finalize(CurFn);
-}
-
-// Map the LangOption for exception behavior into
-// the corresponding enum in the IR.
-llvm::fp::ExceptionBehavior
-clang::ToConstrainedExceptMD(LangOptions::FPExceptionModeKind Kind) {
-
-  switch (Kind) {
-  case LangOptions::FPE_Ignore:  return llvm::fp::ebIgnore;
-  case LangOptions::FPE_MayTrap: return llvm::fp::ebMayTrap;
-  case LangOptions::FPE_Strict:  return llvm::fp::ebStrict;
-  }
-  llvm_unreachable("Unsupported FP Exception Behavior");
-}
-
-void CodeGenFunction::SetFastMathFlags(FPOptions FPFeatures) {
-  llvm::FastMathFlags FMF;
-  FMF.setAllowReassoc(FPFeatures.getAllowFPReassociate());
-  FMF.setNoNaNs(FPFeatures.getNoHonorNaNs());
-  FMF.setNoInfs(FPFeatures.getNoHonorInfs());
-  FMF.setNoSignedZeros(FPFeatures.getNoSignedZero());
-  FMF.setAllowReciprocal(FPFeatures.getAllowReciprocal());
-  FMF.setApproxFunc(FPFeatures.getAllowApproxFunc());
-  FMF.setAllowContract(FPFeatures.allowFPContractAcrossStatement());
-  Builder.setFastMathFlags(FMF);
-}
-
-CodeGenFunction::CGFPOptionsRAII::CGFPOptionsRAII(CodeGenFunction &CGF,
-                                                  const Expr *E)
-    : CGF(CGF) {
-  ConstructorHelper(E->getFPFeaturesInEffect(CGF.getLangOpts()));
-}
-
-CodeGenFunction::CGFPOptionsRAII::CGFPOptionsRAII(CodeGenFunction &CGF,
-                                                  FPOptions FPFeatures)
-    : CGF(CGF) {
-  ConstructorHelper(FPFeatures);
-}
-
-void CodeGenFunction::CGFPOptionsRAII::ConstructorHelper(FPOptions FPFeatures) {
-  OldFPFeatures = CGF.CurFPFeatures;
-  CGF.CurFPFeatures = FPFeatures;
-
-  OldExcept = CGF.Builder.getDefaultConstrainedExcept();
-  OldRounding = CGF.Builder.getDefaultConstrainedRounding();
-
-  if (OldFPFeatures == FPFeatures)
-    return;
-
-  FMFGuard.emplace(CGF.Builder);
-
-  llvm::RoundingMode NewRoundingBehavior =
-      static_cast<llvm::RoundingMode>(FPFeatures.getRoundingMode());
-  CGF.Builder.setDefaultConstrainedRounding(NewRoundingBehavior);
-  auto NewExceptionBehavior =
-      ToConstrainedExceptMD(static_cast<LangOptions::FPExceptionModeKind>(
-          FPFeatures.getFPExceptionMode()));
-  CGF.Builder.setDefaultConstrainedExcept(NewExceptionBehavior);
-
-  CGF.SetFastMathFlags(FPFeatures);
-
-  assert((CGF.CurFuncDecl == nullptr || CGF.Builder.getIsFPConstrained() ||
-          isa<CXXConstructorDecl>(CGF.CurFuncDecl) ||
-          isa<CXXDestructorDecl>(CGF.CurFuncDecl) ||
-          (NewExceptionBehavior == llvm::fp::ebIgnore &&
-           NewRoundingBehavior == llvm::RoundingMode::NearestTiesToEven)) &&
-         "FPConstrained should be enabled on entire function");
-
-  auto mergeFnAttrValue = [&](StringRef Name, bool Value) {
-    auto OldValue =
-        CGF.CurFn->getFnAttribute(Name).getValueAsBool();
-    auto NewValue = OldValue & Value;
-    if (OldValue != NewValue)
-      CGF.CurFn->addFnAttr(Name, llvm::toStringRef(NewValue));
-  };
-  mergeFnAttrValue("no-infs-fp-math", FPFeatures.getNoHonorInfs());
-  mergeFnAttrValue("no-nans-fp-math", FPFeatures.getNoHonorNaNs());
-  mergeFnAttrValue("no-signed-zeros-fp-math", FPFeatures.getNoSignedZero());
-  mergeFnAttrValue("unsafe-fp-math", FPFeatures.getAllowFPReassociate() &&
-                                         FPFeatures.getAllowReciprocal() &&
-                                         FPFeatures.getAllowApproxFunc() &&
-                                         FPFeatures.getNoSignedZero());
-}
-
-CodeGenFunction::CGFPOptionsRAII::~CGFPOptionsRAII() {
-  CGF.CurFPFeatures = OldFPFeatures;
-  CGF.Builder.setDefaultConstrainedExcept(OldExcept);
-  CGF.Builder.setDefaultConstrainedRounding(OldRounding);
-}
-
-LValue CodeGenFunction::MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T) {
-  LValueBaseInfo BaseInfo;
-  TBAAAccessInfo TBAAInfo;
-  CharUnits Alignment = CGM.getNaturalTypeAlignment(T, &BaseInfo, &TBAAInfo);
-  Address Addr(V, ConvertTypeForMem(T), Alignment);
-  return LValue::MakeAddr(Addr, T, getContext(), BaseInfo, TBAAInfo);
-}
-
-/// Given a value of type T* that may not be to a complete object,
-/// construct an l-value with the natural pointee alignment of T.
-LValue
-CodeGenFunction::MakeNaturalAlignPointeeAddrLValue(llvm::Value *V, QualType T) {
-  LValueBaseInfo BaseInfo;
-  TBAAAccessInfo TBAAInfo;
-  CharUnits Align = CGM.getNaturalTypeAlignment(T, &BaseInfo, &TBAAInfo,
-                                                /* forPointeeType= */ true);
-  Address Addr(V, ConvertTypeForMem(T), Align);
-  return MakeAddrLValue(Addr, T, BaseInfo, TBAAInfo);
-}
-
-
-llvm::Type *CodeGenFunction::ConvertTypeForMem(QualType T) {
-  return CGM.getTypes().ConvertTypeForMem(T);
-}
-
-llvm::Type *CodeGenFunction::ConvertType(QualType T) {
-  return CGM.getTypes().ConvertType(T);
-}
-
-TypeEvaluationKind CodeGenFunction::getEvaluationKind(QualType type) {
-  type = type.getCanonicalType();
-  while (true) {
-    switch (type->getTypeClass()) {
-#define TYPE(name, parent)
-#define ABSTRACT_TYPE(name, parent)
-#define NON_CANONICAL_TYPE(name, parent) case Type::name:
-#define DEPENDENT_TYPE(name, parent) case Type::name:
-#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(name, parent) case Type::name:
-#include "clang/AST/TypeNodes.inc"
-      llvm_unreachable("non-canonical or dependent type in IR-generation");
-
-    case Type::Auto:
-    case Type::DeducedTemplateSpecialization:
-      llvm_unreachable("undeduced type in IR-generation");
-
-    // Various scalar types.
-    case Type::Builtin:
-    case Type::Pointer:
-    case Type::BlockPointer:
-    case Type::LValueReference:
-    case Type::RValueReference:
-    case Type::MemberPointer:
-    case Type::Vector:
-    case Type::ExtVector:
-    case Type::ConstantMatrix:
-    case Type::FunctionProto:
-    case Type::FunctionNoProto:
-    case Type::Enum:
-    case Type::ObjCObjectPointer:
-    case Type::Pipe:
-    case Type::BitInt:
-      return TEK_Scalar;
-
-    // Complexes.
-    case Type::Complex:
-      return TEK_Complex;
-
-    // Arrays, records, and Objective-C objects.
-    case Type::ConstantArray:
-    case Type::IncompleteArray:
-    case Type::VariableArray:
-    case Type::Record:
-    case Type::ObjCObject:
-    case Type::ObjCInterface:
-      return TEK_Aggregate;
-
-    // We operate on atomic values according to their underlying type.
-    case Type::Atomic:
-      type = cast<AtomicType>(type)->getValueType();
-      continue;
-    }
-    llvm_unreachable("unknown type kind!");
-  }
-}
-
-llvm::DebugLoc CodeGenFunction::EmitReturnBlock() {
-  // For cleanliness, we try to avoid emitting the return block for
-  // simple cases.
-  llvm::BasicBlock *CurBB = Builder.GetInsertBlock();
-
-  if (CurBB) {
-    assert(!CurBB->getTerminator() && "Unexpected terminated block.");
-
-    // We have a valid insert point, reuse it if it is empty or there are no
-    // explicit jumps to the return block.
-    if (CurBB->empty() || ReturnBlock.getBlock()->use_empty()) {
-      ReturnBlock.getBlock()->replaceAllUsesWith(CurBB);
-      delete ReturnBlock.getBlock();
-      ReturnBlock = JumpDest();
-    } else
-      EmitBlock(ReturnBlock.getBlock());
-    return llvm::DebugLoc();
-  }
-
-  // Otherwise, if the return block is the target of a single direct
-  // branch then we can just put the code in that block instead. This
-  // cleans up functions which started with a unified return block.
-  if (ReturnBlock.getBlock()->hasOneUse()) {
-    llvm::BranchInst *BI =
-      dyn_cast<llvm::BranchInst>(*ReturnBlock.getBlock()->user_begin());
-    if (BI && BI->isUnconditional() &&
-        BI->getSuccessor(0) == ReturnBlock.getBlock()) {
-      // Record/return the DebugLoc of the simple 'return' expression to be used
-      // later by the actual 'ret' instruction.
-      llvm::DebugLoc Loc = BI->getDebugLoc();
-      Builder.SetInsertPoint(BI->getParent());
-      BI->eraseFromParent();
-      delete ReturnBlock.getBlock();
-      ReturnBlock = JumpDest();
-      return Loc;
-    }
-  }
-
-  // FIXME: We are at an unreachable point, there is no reason to emit the block
-  // unless it has uses. However, we still need a place to put the debug
-  // region.end for now.
-
-  EmitBlock(ReturnBlock.getBlock());
-  return llvm::DebugLoc();
-}
-
-static void EmitIfUsed(CodeGenFunction &CGF, llvm::BasicBlock *BB) {
-  if (!BB) return;
-  if (!BB->use_empty())
-    return CGF.CurFn->getBasicBlockList().push_back(BB);
-  delete BB;
-}
-
-void CodeGenFunction::FinishFunction(SourceLocation EndLoc) {
-  assert(BreakContinueStack.empty() &&
-         "mismatched push/pop in break/continue stack!");
-
-  bool OnlySimpleReturnStmts = NumSimpleReturnExprs > 0
-    && NumSimpleReturnExprs == NumReturnExprs
-    && ReturnBlock.getBlock()->use_empty();
-  // Usually the return expression is evaluated before the cleanup
-  // code.  If the function contains only a simple return statement,
-  // such as a constant, the location before the cleanup code becomes
-  // the last useful breakpoint in the function, because the simple
-  // return expression will be evaluated after the cleanup code. To be
-  // safe, set the debug location for cleanup code to the location of
-  // the return statement.  Otherwise the cleanup code should be at the
-  // end of the function's lexical scope.
-  //
-  // If there are multiple branches to the return block, the branch
-  // instructions will get the location of the return statements and
-  // all will be fine.
-  if (CGDebugInfo *DI = getDebugInfo()) {
-    if (OnlySimpleReturnStmts)
-      DI->EmitLocation(Builder, LastStopPoint);
-    else
-      DI->EmitLocation(Builder, EndLoc);
-  }
-
-  // Pop any cleanups that might have been associated with the
-  // parameters.  Do this in whatever block we're currently in; it's
-  // important to do this before we enter the return block or return
-  // edges will be *really* confused.
-  bool HasCleanups = EHStack.stable_begin() != PrologueCleanupDepth;
-  bool HasOnlyLifetimeMarkers =
-      HasCleanups && EHStack.containsOnlyLifetimeMarkers(PrologueCleanupDepth);
-  bool EmitRetDbgLoc = !HasCleanups || HasOnlyLifetimeMarkers;
-  if (HasCleanups) {
-    // Make sure the line table doesn't jump back into the body for
-    // the ret after it's been at EndLoc.
-    Optional<ApplyDebugLocation> AL;
-    if (CGDebugInfo *DI = getDebugInfo()) {
-      if (OnlySimpleReturnStmts)
-        DI->EmitLocation(Builder, EndLoc);
-      else
-        // We may not have a valid end location. Try to apply it anyway, and
-        // fall back to an artificial location if needed.
-        AL = ApplyDebugLocation::CreateDefaultArtificial(*this, EndLoc);
-    }
-
-    PopCleanupBlocks(PrologueCleanupDepth);
-  }
-
-  // Emit function epilog (to return).
-  llvm::DebugLoc Loc = EmitReturnBlock();
-
-  if (ShouldInstrumentFunction()) {
-    if (CGM.getCodeGenOpts().InstrumentFunctions)
-      CurFn->addFnAttr("instrument-function-exit", "__cyg_profile_func_exit");
-    if (CGM.getCodeGenOpts().InstrumentFunctionsAfterInlining)
-      CurFn->addFnAttr("instrument-function-exit-inlined",
-                       "__cyg_profile_func_exit");
-  }
-
-  if (ShouldSkipSanitizerInstrumentation())
-    CurFn->addFnAttr(llvm::Attribute::DisableSanitizerInstrumentation);
-
-  // Emit debug descriptor for function end.
-  if (CGDebugInfo *DI = getDebugInfo())
-    DI->EmitFunctionEnd(Builder, CurFn);
-
-  // Reset the debug location to that of the simple 'return' expression, if any
-  // rather than that of the end of the function's scope '}'.
-  ApplyDebugLocation AL(*this, Loc);
-  EmitFunctionEpilog(*CurFnInfo, EmitRetDbgLoc, EndLoc);
-  EmitEndEHSpec(CurCodeDecl);
-
-  assert(EHStack.empty() &&
-         "did not remove all scopes from cleanup stack!");
-
-  // If someone did an indirect goto, emit the indirect goto block at the end of
-  // the function.
-  if (IndirectBranch) {
-    EmitBlock(IndirectBranch->getParent());
-    Builder.ClearInsertionPoint();
-  }
-
-  // If some of our locals escaped, insert a call to llvm.localescape in the
-  // entry block.
-  if (!EscapedLocals.empty()) {
-    // Invert the map from local to index into a simple vector. There should be
-    // no holes.
-    SmallVector<llvm::Value *, 4> EscapeArgs;
-    EscapeArgs.resize(EscapedLocals.size());
-    for (auto &Pair : EscapedLocals)
-      EscapeArgs[Pair.second] = Pair.first;
-    llvm::Function *FrameEscapeFn = llvm::Intrinsic::getDeclaration(
-        &CGM.getModule(), llvm::Intrinsic::localescape);
-    CGBuilderTy(*this, AllocaInsertPt).CreateCall(FrameEscapeFn, EscapeArgs);
-  }
-
-  // Remove the AllocaInsertPt instruction, which is just a convenience for us.
-  llvm::Instruction *Ptr = AllocaInsertPt;
-  AllocaInsertPt = nullptr;
-  Ptr->eraseFromParent();
-
-  // PostAllocaInsertPt, if created, was lazily created when it was required,
-  // remove it now since it was just created for our own convenience.
-  if (PostAllocaInsertPt) {
-    llvm::Instruction *PostPtr = PostAllocaInsertPt;
-    PostAllocaInsertPt = nullptr;
-    PostPtr->eraseFromParent();
-  }
-
-  // If someone took the address of a label but never did an indirect goto, we
-  // made a zero entry PHI node, which is illegal, zap it now.
-  if (IndirectBranch) {
-    llvm::PHINode *PN = cast<llvm::PHINode>(IndirectBranch->getAddress());
-    if (PN->getNumIncomingValues() == 0) {
-      PN->replaceAllUsesWith(llvm::UndefValue::get(PN->getType()));
-      PN->eraseFromParent();
-    }
-  }
-
-  EmitIfUsed(*this, EHResumeBlock);
-  EmitIfUsed(*this, TerminateLandingPad);
-  EmitIfUsed(*this, TerminateHandler);
-  EmitIfUsed(*this, UnreachableBlock);
-
-  for (const auto &FuncletAndParent : TerminateFunclets)
-    EmitIfUsed(*this, FuncletAndParent.second);
-
-  if (CGM.getCodeGenOpts().EmitDeclMetadata)
-    EmitDeclMetadata();
-
-  for (const auto &R : DeferredReplacements) {
-    if (llvm::Value *Old = R.first) {
-      Old->replaceAllUsesWith(R.second);
-      cast<llvm::Instruction>(Old)->eraseFromParent();
-    }
-  }
-  DeferredReplacements.clear();
-
-  // Eliminate CleanupDestSlot alloca by replacing it with SSA values and
-  // PHIs if the current function is a coroutine. We don't do it for all
-  // functions as it may result in slight increase in numbers of instructions
-  // if compiled with no optimizations. We do it for coroutine as the lifetime
-  // of CleanupDestSlot alloca make correct coroutine frame building very
-  // difficult.
-  if (NormalCleanupDest.isValid() && isCoroutine()) {
-    llvm::DominatorTree DT(*CurFn);
-    llvm::PromoteMemToReg(
-        cast<llvm::AllocaInst>(NormalCleanupDest.getPointer()), DT);
-    NormalCleanupDest = Address::invalid();
-  }
-
-  // Scan function arguments for vector width.
-  for (llvm::Argument &A : CurFn->args())
-    if (auto *VT = dyn_cast<llvm::VectorType>(A.getType()))
-      LargestVectorWidth =
-          std::max((uint64_t)LargestVectorWidth,
-                   VT->getPrimitiveSizeInBits().getKnownMinSize());
-
-  // Update vector width based on return type.
-  if (auto *VT = dyn_cast<llvm::VectorType>(CurFn->getReturnType()))
-    LargestVectorWidth =
-        std::max((uint64_t)LargestVectorWidth,
-                 VT->getPrimitiveSizeInBits().getKnownMinSize());
-
-  // Add the required-vector-width attribute. This contains the max width from:
-  // 1. min-vector-width attribute used in the source program.
-  // 2. Any builtins used that have a vector width specified.
-  // 3. Values passed in and out of inline assembly.
-  // 4. Width of vector arguments and return types for this function.
-  // 5. Width of vector aguments and return types for functions called by this
-  //    function.
-  CurFn->addFnAttr("min-legal-vector-width", llvm::utostr(LargestVectorWidth));
-
-  // Add vscale_range attribute if appropriate.
-  Optional<std::pair<unsigned, unsigned>> VScaleRange =
-      getContext().getTargetInfo().getVScaleRange(getLangOpts());
-  if (VScaleRange) {
-    CurFn->addFnAttr(llvm::Attribute::getWithVScaleRangeArgs(
-        getLLVMContext(), VScaleRange.getValue().first,
-        VScaleRange.getValue().second));
-  }
-
-  // If we generated an unreachable return block, delete it now.
-  if (ReturnBlock.isValid() && ReturnBlock.getBlock()->use_empty()) {
-    Builder.ClearInsertionPoint();
-    ReturnBlock.getBlock()->eraseFromParent();
-  }
-  if (ReturnValue.isValid()) {
-    auto *RetAlloca = dyn_cast<llvm::AllocaInst>(ReturnValue.getPointer());
-    if (RetAlloca && RetAlloca->use_empty()) {
-      RetAlloca->eraseFromParent();
-      ReturnValue = Address::invalid();
-    }
-  }
-}
-
-/// ShouldInstrumentFunction - Return true if the current function should be
-/// instrumented with __cyg_profile_func_* calls
-bool CodeGenFunction::ShouldInstrumentFunction() {
-  if (!CGM.getCodeGenOpts().InstrumentFunctions &&
-      !CGM.getCodeGenOpts().InstrumentFunctionsAfterInlining &&
-      !CGM.getCodeGenOpts().InstrumentFunctionEntryBare)
-    return false;
-  if (!CurFuncDecl || CurFuncDecl->hasAttr<NoInstrumentFunctionAttr>())
-    return false;
-  return true;
-}
-
-bool CodeGenFunction::ShouldSkipSanitizerInstrumentation() {
-  if (!CurFuncDecl)
-    return false;
-  return CurFuncDecl->hasAttr<DisableSanitizerInstrumentationAttr>();
-}
-
-/// ShouldXRayInstrument - Return true if the current function should be
-/// instrumented with XRay nop sleds.
-bool CodeGenFunction::ShouldXRayInstrumentFunction() const {
-  return CGM.getCodeGenOpts().XRayInstrumentFunctions;
-}
-
-/// AlwaysEmitXRayCustomEvents - Return true if we should emit IR for calls to
-/// the __xray_customevent(...) builtin calls, when doing XRay instrumentation.
-bool CodeGenFunction::AlwaysEmitXRayCustomEvents() const {
-  return CGM.getCodeGenOpts().XRayInstrumentFunctions &&
-         (CGM.getCodeGenOpts().XRayAlwaysEmitCustomEvents ||
-          CGM.getCodeGenOpts().XRayInstrumentationBundle.Mask ==
-              XRayInstrKind::Custom);
-}
-
-bool CodeGenFunction::AlwaysEmitXRayTypedEvents() const {
-  return CGM.getCodeGenOpts().XRayInstrumentFunctions &&
-         (CGM.getCodeGenOpts().XRayAlwaysEmitTypedEvents ||
-          CGM.getCodeGenOpts().XRayInstrumentationBundle.Mask ==
-              XRayInstrKind::Typed);
-}
-
-llvm::Constant *
-CodeGenFunction::EncodeAddrForUseInPrologue(llvm::Function *F,
-                                            llvm::Constant *Addr) {
-  // Addresses stored in prologue data can't require run-time fixups and must
-  // be PC-relative. Run-time fixups are undesirable because they necessitate
-  // writable text segments, which are unsafe. And absolute addresses are
-  // undesirable because they break PIE mode.
-
-  // Add a layer of indirection through a private global. Taking its address
-  // won't result in a run-time fixup, even if Addr has linkonce_odr linkage.
-  auto *GV = new llvm::GlobalVariable(CGM.getModule(), Addr->getType(),
-                                      /*isConstant=*/true,
-                                      llvm::GlobalValue::PrivateLinkage, Addr);
-
-  // Create a PC-relative address.
-  auto *GOTAsInt = llvm::ConstantExpr::getPtrToInt(GV, IntPtrTy);
-  auto *FuncAsInt = llvm::ConstantExpr::getPtrToInt(F, IntPtrTy);
-  auto *PCRelAsInt = llvm::ConstantExpr::getSub(GOTAsInt, FuncAsInt);
-  return (IntPtrTy == Int32Ty)
-             ? PCRelAsInt
-             : llvm::ConstantExpr::getTrunc(PCRelAsInt, Int32Ty);
-}
-
-llvm::Value *
-CodeGenFunction::DecodeAddrUsedInPrologue(llvm::Value *F,
-                                          llvm::Value *EncodedAddr) {
-  // Reconstruct the address of the global.
-  auto *PCRelAsInt = Builder.CreateSExt(EncodedAddr, IntPtrTy);
-  auto *FuncAsInt = Builder.CreatePtrToInt(F, IntPtrTy, "func_addr.int");
-  auto *GOTAsInt = Builder.CreateAdd(PCRelAsInt, FuncAsInt, "global_addr.int");
-  auto *GOTAddr = Builder.CreateIntToPtr(GOTAsInt, Int8PtrPtrTy, "global_addr");
-
-  // Load the original pointer through the global.
-  return Builder.CreateLoad(Address(GOTAddr, getPointerAlign()),
-                            "decoded_addr");
-}
-
-void CodeGenFunction::EmitOpenCLKernelMetadata(const FunctionDecl *FD,
-                                               llvm::Function *Fn)
-{
-  if (!FD->hasAttr<OpenCLKernelAttr>())
-    return;
-
-  llvm::LLVMContext &Context = getLLVMContext();
-
-  CGM.GenOpenCLArgMetadata(Fn, FD, this);
-
-  if (const VecTypeHintAttr *A = FD->getAttr<VecTypeHintAttr>()) {
-    QualType HintQTy = A->getTypeHint();
-    const ExtVectorType *HintEltQTy = HintQTy->getAs<ExtVectorType>();
-    bool IsSignedInteger =
-        HintQTy->isSignedIntegerType() ||
-        (HintEltQTy && HintEltQTy->getElementType()->isSignedIntegerType());
-    llvm::Metadata *AttrMDArgs[] = {
-        llvm::ConstantAsMetadata::get(llvm::UndefValue::get(
-            CGM.getTypes().ConvertType(A->getTypeHint()))),
-        llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
-            llvm::IntegerType::get(Context, 32),
-            llvm::APInt(32, (uint64_t)(IsSignedInteger ? 1 : 0))))};
-    Fn->setMetadata("vec_type_hint", llvm::MDNode::get(Context, AttrMDArgs));
-  }
-
-  if (const WorkGroupSizeHintAttr *A = FD->getAttr<WorkGroupSizeHintAttr>()) {
-    llvm::Metadata *AttrMDArgs[] = {
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getXDim())),
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getYDim())),
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getZDim()))};
-    Fn->setMetadata("work_group_size_hint", llvm::MDNode::get(Context, AttrMDArgs));
-  }
-
-  if (const ReqdWorkGroupSizeAttr *A = FD->getAttr<ReqdWorkGroupSizeAttr>()) {
-    llvm::Metadata *AttrMDArgs[] = {
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getXDim())),
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getYDim())),
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getZDim()))};
-    Fn->setMetadata("reqd_work_group_size", llvm::MDNode::get(Context, AttrMDArgs));
-  }
-
-  if (const OpenCLIntelReqdSubGroupSizeAttr *A =
-          FD->getAttr<OpenCLIntelReqdSubGroupSizeAttr>()) {
-    llvm::Metadata *AttrMDArgs[] = {
-        llvm::ConstantAsMetadata::get(Builder.getInt32(A->getSubGroupSize()))};
-    Fn->setMetadata("intel_reqd_sub_group_size",
-                    llvm::MDNode::get(Context, AttrMDArgs));
-  }
-}
-
-/// Determine whether the function F ends with a return stmt.
-static bool endsWithReturn(const Decl* F) {
-  const Stmt *Body = nullptr;
-  if (auto *FD = dyn_cast_or_null<FunctionDecl>(F))
-    Body = FD->getBody();
-  else if (auto *OMD = dyn_cast_or_null<ObjCMethodDecl>(F))
-    Body = OMD->getBody();
-
-  if (auto *CS = dyn_cast_or_null<CompoundStmt>(Body)) {
-    auto LastStmt = CS->body_rbegin();
-    if (LastStmt != CS->body_rend())
-      return isa<ReturnStmt>(*LastStmt);
-  }
-  return false;
-}
-
-void CodeGenFunction::markAsIgnoreThreadCheckingAtRuntime(llvm::Function *Fn) {
-  if (SanOpts.has(SanitizerKind::Thread)) {
-    Fn->addFnAttr("sanitize_thread_no_checking_at_run_time");
-    Fn->removeFnAttr(llvm::Attribute::SanitizeThread);
-  }
-}
-
-/// Check if the return value of this function requires sanitization.
-bool CodeGenFunction::requiresReturnValueCheck() const {
-  return requiresReturnValueNullabilityCheck() ||
-         (SanOpts.has(SanitizerKind::ReturnsNonnullAttribute) && CurCodeDecl &&
-          CurCodeDecl->getAttr<ReturnsNonNullAttr>());
-}
-
-static bool matchesStlAllocatorFn(const Decl *D, const ASTContext &Ctx) {
-  auto *MD = dyn_cast_or_null<CXXMethodDecl>(D);
-  if (!MD || !MD->getDeclName().getAsIdentifierInfo() ||
-      !MD->getDeclName().getAsIdentifierInfo()->isStr("allocate") ||
-      (MD->getNumParams() != 1 && MD->getNumParams() != 2))
-    return false;
-
-  if (MD->parameters()[0]->getType().getCanonicalType() != Ctx.getSizeType())
-    return false;
-
-  if (MD->getNumParams() == 2) {
-    auto *PT = MD->parameters()[1]->getType()->getAs<PointerType>();
-    if (!PT || !PT->isVoidPointerType() ||
-        !PT->getPointeeType().isConstQualified())
-      return false;
-  }
-
-  return true;
-}
-
-/// Return the UBSan prologue signature for \p FD if one is available.
-static llvm::Constant *getPrologueSignature(CodeGenModule &CGM,
-                                            const FunctionDecl *FD) {
-  if (const auto *MD = dyn_cast<CXXMethodDecl>(FD))
-    if (!MD->isStatic())
-      return nullptr;
-  return CGM.getTargetCodeGenInfo().getUBSanFunctionSignature(CGM);
-}
-
-void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
-                                    llvm::Function *Fn,
-                                    const CGFunctionInfo &FnInfo,
-                                    const FunctionArgList &Args,
-                                    SourceLocation Loc,
-                                    SourceLocation StartLoc) {
-  assert(!CurFn &&
-         "Do not use a CodeGenFunction object for more than one function");
-
-  const Decl *D = GD.getDecl();
-
-  DidCallStackSave = false;
-  CurCodeDecl = D;
-  const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D);
-  if (FD && FD->usesSEHTry())
-    CurSEHParent = FD;
-  CurFuncDecl = (D ? D->getNonClosureContext() : nullptr);
-  FnRetTy = RetTy;
-  CurFn = Fn;
-  CurFnInfo = &FnInfo;
-  assert(CurFn->isDeclaration() && "Function already has body?");
-
-  // If this function is ignored for any of the enabled sanitizers,
-  // disable the sanitizer for the function.
-  do {
-#define SANITIZER(NAME, ID)                                                    \
-  if (SanOpts.empty())                                                         \
-    break;                                                                     \
-  if (SanOpts.has(SanitizerKind::ID))                                          \
-    if (CGM.isInNoSanitizeList(SanitizerKind::ID, Fn, Loc))                    \
-      SanOpts.set(SanitizerKind::ID, false);
-
-#include "clang/Basic/Sanitizers.def"
-#undef SANITIZER
-  } while (false);
-
-  if (D) {
-    bool NoSanitizeCoverage = false;
-
-    for (auto Attr : D->specific_attrs<NoSanitizeAttr>()) {
-      // Apply the no_sanitize* attributes to SanOpts.
-      SanitizerMask mask = Attr->getMask();
-      SanOpts.Mask &= ~mask;
-      if (mask & SanitizerKind::Address)
-        SanOpts.set(SanitizerKind::KernelAddress, false);
-      if (mask & SanitizerKind::KernelAddress)
-        SanOpts.set(SanitizerKind::Address, false);
-      if (mask & SanitizerKind::HWAddress)
-        SanOpts.set(SanitizerKind::KernelHWAddress, false);
-      if (mask & SanitizerKind::KernelHWAddress)
-        SanOpts.set(SanitizerKind::HWAddress, false);
-
-      // SanitizeCoverage is not handled by SanOpts.
-      if (Attr->hasCoverage())
-        NoSanitizeCoverage = true;
-    }
-
-    if (NoSanitizeCoverage && CGM.getCodeGenOpts().hasSanitizeCoverage())
-      Fn->addFnAttr(llvm::Attribute::NoSanitizeCoverage);
-  }
-
-  // Apply sanitizer attributes to the function.
-  if (SanOpts.hasOneOf(SanitizerKind::Address | SanitizerKind::KernelAddress))
-    Fn->addFnAttr(llvm::Attribute::SanitizeAddress);
-  if (SanOpts.hasOneOf(SanitizerKind::HWAddress | SanitizerKind::KernelHWAddress))
-    Fn->addFnAttr(llvm::Attribute::SanitizeHWAddress);
-  if (SanOpts.has(SanitizerKind::MemTag))
-    Fn->addFnAttr(llvm::Attribute::SanitizeMemTag);
-  if (SanOpts.has(SanitizerKind::Thread))
-    Fn->addFnAttr(llvm::Attribute::SanitizeThread);
-  if (SanOpts.hasOneOf(SanitizerKind::Memory | SanitizerKind::KernelMemory))
-    Fn->addFnAttr(llvm::Attribute::SanitizeMemory);
-  if (SanOpts.has(SanitizerKind::SafeStack))
-    Fn->addFnAttr(llvm::Attribute::SafeStack);
-  if (SanOpts.has(SanitizerKind::ShadowCallStack))
-    Fn->addFnAttr(llvm::Attribute::ShadowCallStack);
-
-  // Apply fuzzing attribute to the function.
-  if (SanOpts.hasOneOf(SanitizerKind::Fuzzer | SanitizerKind::FuzzerNoLink))
-    Fn->addFnAttr(llvm::Attribute::OptForFuzzing);
-
-  // Ignore TSan memory acesses from within ObjC/ObjC++ dealloc, initialize,
-  // .cxx_destruct, __destroy_helper_block_ and all of their calees at run time.
-  if (SanOpts.has(SanitizerKind::Thread)) {
-    if (const auto *OMD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
-      IdentifierInfo *II = OMD->getSelector().getIdentifierInfoForSlot(0);
-      if (OMD->getMethodFamily() == OMF_dealloc ||
-          OMD->getMethodFamily() == OMF_initialize ||
-          (OMD->getSelector().isUnarySelector() && II->isStr(".cxx_destruct"))) {
-        markAsIgnoreThreadCheckingAtRuntime(Fn);
-      }
-    }
-  }
-
-  // Ignore unrelated casts in STL allocate() since the allocator must cast
-  // from void* to T* before object initialization completes. Don't match on the
-  // namespace because not all allocators are in std::
-  if (D && SanOpts.has(SanitizerKind::CFIUnrelatedCast)) {
-    if (matchesStlAllocatorFn(D, getContext()))
-      SanOpts.Mask &= ~SanitizerKind::CFIUnrelatedCast;
-  }
-
-  // Ignore null checks in coroutine functions since the coroutines passes
-  // are not aware of how to move the extra UBSan instructions across the split
-  // coroutine boundaries.
-  if (D && SanOpts.has(SanitizerKind::Null))
-    if (FD && FD->getBody() &&
-        FD->getBody()->getStmtClass() == Stmt::CoroutineBodyStmtClass)
-      SanOpts.Mask &= ~SanitizerKind::Null;
-
-  // Apply xray attributes to the function (as a string, for now)
-  bool AlwaysXRayAttr = false;
-  if (const auto *XRayAttr = D ? D->getAttr<XRayInstrumentAttr>() : nullptr) {
-    if (CGM.getCodeGenOpts().XRayInstrumentationBundle.has(
-            XRayInstrKind::FunctionEntry) ||
-        CGM.getCodeGenOpts().XRayInstrumentationBundle.has(
-            XRayInstrKind::FunctionExit)) {
-      if (XRayAttr->alwaysXRayInstrument() && ShouldXRayInstrumentFunction()) {
-        Fn->addFnAttr("function-instrument", "xray-always");
-        AlwaysXRayAttr = true;
-      }
-      if (XRayAttr->neverXRayInstrument())
-        Fn->addFnAttr("function-instrument", "xray-never");
-      if (const auto *LogArgs = D->getAttr<XRayLogArgsAttr>())
-        if (ShouldXRayInstrumentFunction())
-          Fn->addFnAttr("xray-log-args",
-                        llvm::utostr(LogArgs->getArgumentCount()));
-    }
-  } else {
-    if (ShouldXRayInstrumentFunction() && !CGM.imbueXRayAttrs(Fn, Loc))
-      Fn->addFnAttr(
-          "xray-instruction-threshold",
-          llvm::itostr(CGM.getCodeGenOpts().XRayInstructionThreshold));
-  }
-
-  if (ShouldXRayInstrumentFunction()) {
-    if (CGM.getCodeGenOpts().XRayIgnoreLoops)
-      Fn->addFnAttr("xray-ignore-loops");
-
-    if (!CGM.getCodeGenOpts().XRayInstrumentationBundle.has(
-            XRayInstrKind::FunctionExit))
-      Fn->addFnAttr("xray-skip-exit");
-
-    if (!CGM.getCodeGenOpts().XRayInstrumentationBundle.has(
-            XRayInstrKind::FunctionEntry))
-      Fn->addFnAttr("xray-skip-entry");
-
-    auto FuncGroups = CGM.getCodeGenOpts().XRayTotalFunctionGroups;
-    if (FuncGroups > 1) {
-      auto FuncName = llvm::makeArrayRef<uint8_t>(
-          CurFn->getName().bytes_begin(), CurFn->getName().bytes_end());
-      auto Group = crc32(FuncName) % FuncGroups;
-      if (Group != CGM.getCodeGenOpts().XRaySelectedFunctionGroup &&
-          !AlwaysXRayAttr)
-        Fn->addFnAttr("function-instrument", "xray-never");
-    }
-  }
-
-  if (CGM.getCodeGenOpts().getProfileInstr() != CodeGenOptions::ProfileNone)
-    if (CGM.isProfileInstrExcluded(Fn, Loc))
-      Fn->addFnAttr(llvm::Attribute::NoProfile);
-
-  unsigned Count, Offset;
-  if (const auto *Attr =
-          D ? D->getAttr<PatchableFunctionEntryAttr>() : nullptr) {
-    Count = Attr->getCount();
-    Offset = Attr->getOffset();
-  } else {
-    Count = CGM.getCodeGenOpts().PatchableFunctionEntryCount;
-    Offset = CGM.getCodeGenOpts().PatchableFunctionEntryOffset;
-  }
-  if (Count && Offset <= Count) {
-    Fn->addFnAttr("patchable-function-entry", std::to_string(Count - Offset));
-    if (Offset)
-      Fn->addFnAttr("patchable-function-prefix", std::to_string(Offset));
-  }
-  // Instruct that functions for COFF/CodeView targets should start with a
-  // patchable instruction, but only on x86/x64. Don't forward this to ARM/ARM64
-  // backends as they don't need it -- instructions on these architectures are
-  // always atomically patchable at runtime.
-  if (CGM.getCodeGenOpts().HotPatch &&
-      getContext().getTargetInfo().getTriple().isX86())
-    Fn->addFnAttr("patchable-function", "prologue-short-redirect");
-
-  // Add no-jump-tables value.
-  if (CGM.getCodeGenOpts().NoUseJumpTables)
-    Fn->addFnAttr("no-jump-tables", "true");
-
-  // Add no-inline-line-tables value.
-  if (CGM.getCodeGenOpts().NoInlineLineTables)
-    Fn->addFnAttr("no-inline-line-tables");
-
-  // Add profile-sample-accurate value.
-  if (CGM.getCodeGenOpts().ProfileSampleAccurate)
-    Fn->addFnAttr("profile-sample-accurate");
-
-  if (!CGM.getCodeGenOpts().SampleProfileFile.empty())
-    Fn->addFnAttr("use-sample-profile");
-
-  if (D && D->hasAttr<CFICanonicalJumpTableAttr>())
-    Fn->addFnAttr("cfi-canonical-jump-table");
-
-  if (D && D->hasAttr<NoProfileFunctionAttr>())
-    Fn->addFnAttr(llvm::Attribute::NoProfile);
-
-  if (FD && getLangOpts().OpenCL) {
-    // Add metadata for a kernel function.
-    EmitOpenCLKernelMetadata(FD, Fn);
-  }
-
-  // If we are checking function types, emit a function type signature as
-  // prologue data.
-  if (FD && getLangOpts().CPlusPlus && SanOpts.has(SanitizerKind::Function)) {
-    if (llvm::Constant *PrologueSig = getPrologueSignature(CGM, FD)) {
-      // Remove any (C++17) exception specifications, to allow calling e.g. a
-      // noexcept function through a non-noexcept pointer.
-      auto ProtoTy = getContext().getFunctionTypeWithExceptionSpec(
-          FD->getType(), EST_None);
-      llvm::Constant *FTRTTIConst =
-          CGM.GetAddrOfRTTIDescriptor(ProtoTy, /*ForEH=*/true);
-      llvm::Constant *FTRTTIConstEncoded =
-          EncodeAddrForUseInPrologue(Fn, FTRTTIConst);
-      llvm::Constant *PrologueStructElems[] = {PrologueSig, FTRTTIConstEncoded};
-      llvm::Constant *PrologueStructConst =
-          llvm::ConstantStruct::getAnon(PrologueStructElems, /*Packed=*/true);
-      Fn->setPrologueData(PrologueStructConst);
-    }
-  }
-
-  // If we're checking nullability, we need to know whether we can check the
-  // return value. Initialize the flag to 'true' and refine it in EmitParmDecl.
-  if (SanOpts.has(SanitizerKind::NullabilityReturn)) {
-    auto Nullability = FnRetTy->getNullability(getContext());
-    if (Nullability && *Nullability == NullabilityKind::NonNull) {
-      if (!(SanOpts.has(SanitizerKind::ReturnsNonnullAttribute) &&
-            CurCodeDecl && CurCodeDecl->getAttr<ReturnsNonNullAttr>()))
-        RetValNullabilityPrecondition =
-            llvm::ConstantInt::getTrue(getLLVMContext());
-    }
-  }
-
-  // If we're in C++ mode and the function name is "main", it is guaranteed
-  // to be norecurse by the standard (3.6.1.3 "The function main shall not be
-  // used within a program").
-  //
-  // OpenCL C 2.0 v2.2-11 s6.9.i:
-  //     Recursion is not supported.
-  //
-  // SYCL v1.2.1 s3.10:
-  //     kernels cannot include RTTI information, exception classes,
-  //     recursive code, virtual functions or make use of C++ libraries that
-  //     are not compiled for the device.
-  if (FD && ((getLangOpts().CPlusPlus && FD->isMain()) ||
-             getLangOpts().OpenCL || getLangOpts().SYCLIsDevice ||
-             (getLangOpts().CUDA && FD->hasAttr<CUDAGlobalAttr>())))
-    Fn->addFnAttr(llvm::Attribute::NoRecurse);
-
-  llvm::RoundingMode RM = getLangOpts().getFPRoundingMode();
-  llvm::fp::ExceptionBehavior FPExceptionBehavior =
-      ToConstrainedExceptMD(getLangOpts().getFPExceptionMode());
-  Builder.setDefaultConstrainedRounding(RM);
-  Builder.setDefaultConstrainedExcept(FPExceptionBehavior);
-  if ((FD && (FD->UsesFPIntrin() || FD->hasAttr<StrictFPAttr>())) ||
-      (!FD && (FPExceptionBehavior != llvm::fp::ebIgnore ||
-               RM != llvm::RoundingMode::NearestTiesToEven))) {
-    Builder.setIsFPConstrained(true);
-    Fn->addFnAttr(llvm::Attribute::StrictFP);
-  }
-
-  // If a custom alignment is used, force realigning to this alignment on
-  // any main function which certainly will need it.
-  if (FD && ((FD->isMain() || FD->isMSVCRTEntryPoint()) &&
-             CGM.getCodeGenOpts().StackAlignment))
-    Fn->addFnAttr("stackrealign");
-
-  llvm::BasicBlock *EntryBB = createBasicBlock("entry", CurFn);
-
-  // Create a marker to make it easy to insert allocas into the entryblock
-  // later.  Don't create this with the builder, because we don't want it
-  // folded.
-  llvm::Value *Undef = llvm::UndefValue::get(Int32Ty);
-  AllocaInsertPt = new llvm::BitCastInst(Undef, Int32Ty, "allocapt", EntryBB);
-
-  ReturnBlock = getJumpDestInCurrentScope("return");
-
-  Builder.SetInsertPoint(EntryBB);
-
-  // If we're checking the return value, allocate space for a pointer to a
-  // precise source location of the checked return statement.
-  if (requiresReturnValueCheck()) {
-    ReturnLocation = CreateDefaultAlignTempAlloca(Int8PtrTy, "return.sloc.ptr");
-    Builder.CreateStore(llvm::ConstantPointerNull::get(Int8PtrTy),
-                        ReturnLocation);
-  }
-
-  // Emit subprogram debug descriptor.
-  if (CGDebugInfo *DI = getDebugInfo()) {
-    // Reconstruct the type from the argument list so that implicit parameters,
-    // such as 'this' and 'vtt', show up in the debug info. Preserve the calling
-    // convention.
-    DI->emitFunctionStart(GD, Loc, StartLoc,
-                          DI->getFunctionType(FD, RetTy, Args), CurFn,
-                          CurFuncIsThunk);
-  }
-
-  if (ShouldInstrumentFunction()) {
-    if (CGM.getCodeGenOpts().InstrumentFunctions)
-      CurFn->addFnAttr("instrument-function-entry", "__cyg_profile_func_enter");
-    if (CGM.getCodeGenOpts().InstrumentFunctionsAfterInlining)
-      CurFn->addFnAttr("instrument-function-entry-inlined",
-                       "__cyg_profile_func_enter");
-    if (CGM.getCodeGenOpts().InstrumentFunctionEntryBare)
-      CurFn->addFnAttr("instrument-function-entry-inlined",
-                       "__cyg_profile_func_enter_bare");
-  }
-
-  // Since emitting the mcount call here impacts optimizations such as function
-  // inlining, we just add an attribute to insert a mcount call in backend.
-  // The attribute "counting-function" is set to mcount function name which is
-  // architecture dependent.
-  if (CGM.getCodeGenOpts().InstrumentForProfiling) {
-    // Calls to fentry/mcount should not be generated if function has
-    // the no_instrument_function attribute.
-    if (!CurFuncDecl || !CurFuncDecl->hasAttr<NoInstrumentFunctionAttr>()) {
-      if (CGM.getCodeGenOpts().CallFEntry)
-        Fn->addFnAttr("fentry-call", "true");
-      else {
-        Fn->addFnAttr("instrument-function-entry-inlined",
-                      getTarget().getMCountName());
-      }
-      if (CGM.getCodeGenOpts().MNopMCount) {
-        if (!CGM.getCodeGenOpts().CallFEntry)
-          CGM.getDiags().Report(diag::err_opt_not_valid_without_opt)
-            << "-mnop-mcount" << "-mfentry";
-        Fn->addFnAttr("mnop-mcount");
-      }
-
-      if (CGM.getCodeGenOpts().RecordMCount) {
-        if (!CGM.getCodeGenOpts().CallFEntry)
-          CGM.getDiags().Report(diag::err_opt_not_valid_without_opt)
-            << "-mrecord-mcount" << "-mfentry";
-        Fn->addFnAttr("mrecord-mcount");
-      }
-    }
-  }
-
-  if (CGM.getCodeGenOpts().PackedStack) {
-    if (getContext().getTargetInfo().getTriple().getArch() !=
-        llvm::Triple::systemz)
-      CGM.getDiags().Report(diag::err_opt_not_valid_on_target)
-        << "-mpacked-stack";
-    Fn->addFnAttr("packed-stack");
-  }
-
-  if (CGM.getCodeGenOpts().WarnStackSize != UINT_MAX &&
-      !CGM.getDiags().isIgnored(diag::warn_fe_backend_frame_larger_than, Loc))
-    Fn->addFnAttr("warn-stack-size",
-                  std::to_string(CGM.getCodeGenOpts().WarnStackSize));
-
-  if (RetTy->isVoidType()) {
-    // Void type; nothing to return.
-    ReturnValue = Address::invalid();
-
-    // Count the implicit return.
-    if (!endsWithReturn(D))
-      ++NumReturnExprs;
-  } else if (CurFnInfo->getReturnInfo().getKind() == ABIArgInfo::Indirect) {
-    // Indirect return; emit returned value directly into sret slot.
-    // This reduces code size, and affects correctness in C++.
-    auto AI = CurFn->arg_begin();
-    if (CurFnInfo->getReturnInfo().isSRetAfterThis())
-      ++AI;
-    ReturnValue = Address(&*AI, ConvertType(RetTy),
-                          CurFnInfo->getReturnInfo().getIndirectAlign());
-    if (!CurFnInfo->getReturnInfo().getIndirectByVal()) {
-      ReturnValuePointer =
-          CreateDefaultAlignTempAlloca(Int8PtrTy, "result.ptr");
-      Builder.CreateStore(Builder.CreatePointerBitCastOrAddrSpaceCast(
-                              ReturnValue.getPointer(), Int8PtrTy),
-                          ReturnValuePointer);
-    }
-  } else if (CurFnInfo->getReturnInfo().getKind() == ABIArgInfo::InAlloca &&
-             !hasScalarEvaluationKind(CurFnInfo->getReturnType())) {
-    // Load the sret pointer from the argument struct and return into that.
-    unsigned Idx = CurFnInfo->getReturnInfo().getInAllocaFieldIndex();
-    llvm::Function::arg_iterator EI = CurFn->arg_end();
-    --EI;
-    llvm::Value *Addr = Builder.CreateStructGEP(
-        EI->getType()->getPointerElementType(), &*EI, Idx);
-    llvm::Type *Ty =
-        cast<llvm::GetElementPtrInst>(Addr)->getResultElementType();
-    ReturnValuePointer = Address(Addr, getPointerAlign());
-    Addr = Builder.CreateAlignedLoad(Ty, Addr, getPointerAlign(), "agg.result");
-    ReturnValue = Address(Addr, CGM.getNaturalTypeAlignment(RetTy));
-  } else {
-    ReturnValue = CreateIRTemp(RetTy, "retval");
-
-    // Tell the epilog emitter to autorelease the result.  We do this
-    // now so that various specialized functions can suppress it
-    // during their IR-generation.
-    if (getLangOpts().ObjCAutoRefCount &&
-        !CurFnInfo->isReturnsRetained() &&
-        RetTy->isObjCRetainableType())
-      AutoreleaseResult = true;
-  }
-
-  EmitStartEHSpec(CurCodeDecl);
-
-  PrologueCleanupDepth = EHStack.stable_begin();
-
-  // Emit OpenMP specific initialization of the device functions.
-  if (getLangOpts().OpenMP && CurCodeDecl)
-    CGM.getOpenMPRuntime().emitFunctionProlog(*this, CurCodeDecl);
-
-  EmitFunctionProlog(*CurFnInfo, CurFn, Args);
-
-  if (D && isa<CXXMethodDecl>(D) && cast<CXXMethodDecl>(D)->isInstance()) {
-    CGM.getCXXABI().EmitInstanceFunctionProlog(*this);
-    const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
-    if (MD->getParent()->isLambda() &&
-        MD->getOverloadedOperator() == OO_Call) {
-      // We're in a lambda; figure out the captures.
-      MD->getParent()->getCaptureFields(LambdaCaptureFields,
-                                        LambdaThisCaptureField);
-      if (LambdaThisCaptureField) {
-        // If the lambda captures the object referred to by '*this' - either by
-        // value or by reference, make sure CXXThisValue points to the correct
-        // object.
-
-        // Get the lvalue for the field (which is a copy of the enclosing object
-        // or contains the address of the enclosing object).
-        LValue ThisFieldLValue = EmitLValueForLambdaField(LambdaThisCaptureField);
-        if (!LambdaThisCaptureField->getType()->isPointerType()) {
-          // If the enclosing object was captured by value, just use its address.
-          CXXThisValue = ThisFieldLValue.getAddress(*this).getPointer();
-        } else {
-          // Load the lvalue pointed to by the field, since '*this' was captured
-          // by reference.
-          CXXThisValue =
-              EmitLoadOfLValue(ThisFieldLValue, SourceLocation()).getScalarVal();
-        }
-      }
-      for (auto *FD : MD->getParent()->fields()) {
-        if (FD->hasCapturedVLAType()) {
-          auto *ExprArg = EmitLoadOfLValue(EmitLValueForLambdaField(FD),
-                                           SourceLocation()).getScalarVal();
-          auto VAT = FD->getCapturedVLAType();
-          VLASizeMap[VAT->getSizeExpr()] = ExprArg;
-        }
-      }
-    } else {
-      // Not in a lambda; just use 'this' from the method.
-      // FIXME: Should we generate a new load for each use of 'this'?  The
-      // fast register allocator would be happier...
-      CXXThisValue = CXXABIThisValue;
-    }
-
-    // Check the 'this' pointer once per function, if it's available.
-    if (CXXABIThisValue) {
-      SanitizerSet SkippedChecks;
-      SkippedChecks.set(SanitizerKind::ObjectSize, true);
-      QualType ThisTy = MD->getThisType();
-
-      // If this is the call operator of a lambda with no capture-default, it
-      // may have a static invoker function, which may call this operator with
-      // a null 'this' pointer.
-      if (isLambdaCallOperator(MD) &&
-          MD->getParent()->getLambdaCaptureDefault() == LCD_None)
-        SkippedChecks.set(SanitizerKind::Null, true);
-
-      EmitTypeCheck(
-          isa<CXXConstructorDecl>(MD) ? TCK_ConstructorCall : TCK_MemberCall,
-          Loc, CXXABIThisValue, ThisTy, CXXABIThisAlignment, SkippedChecks);
-    }
-  }
-
-  // If any of the arguments have a variably modified type, make sure to
-  // emit the type size.
-  for (FunctionArgList::const_iterator i = Args.begin(), e = Args.end();
-       i != e; ++i) {
-    const VarDecl *VD = *i;
-
-    // Dig out the type as written from ParmVarDecls; it's unclear whether
-    // the standard (C99 6.9.1p10) requires this, but we're following the
-    // precedent set by gcc.
-    QualType Ty;
-    if (const ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(VD))
-      Ty = PVD->getOriginalType();
-    else
-      Ty = VD->getType();
-
-    if (Ty->isVariablyModifiedType())
-      EmitVariablyModifiedType(Ty);
-  }
-  // Emit a location at the end of the prologue.
-  if (CGDebugInfo *DI = getDebugInfo())
-    DI->EmitLocation(Builder, StartLoc);
-
-  // TODO: Do we need to handle this in two places like we do with
-  // target-features/target-cpu?
-  if (CurFuncDecl)
-    if (const auto *VecWidth = CurFuncDecl->getAttr<MinVectorWidthAttr>())
-      LargestVectorWidth = VecWidth->getVectorWidth();
-}
-
-void CodeGenFunction::EmitFunctionBody(const Stmt *Body) {
-  incrementProfileCounter(Body);
-  if (const CompoundStmt *S = dyn_cast<CompoundStmt>(Body))
-    EmitCompoundStmtWithoutScope(*S);
-  else
-    EmitStmt(Body);
-
-  // This is checked after emitting the function body so we know if there
-  // are any permitted infinite loops.
-  if (checkIfFunctionMustProgress())
-    CurFn->addFnAttr(llvm::Attribute::MustProgress);
-}
-
-/// When instrumenting to collect profile data, the counts for some blocks
-/// such as switch cases need to not include the fall-through counts, so
-/// emit a branch around the instrumentation code. When not instrumenting,
-/// this just calls EmitBlock().
-void CodeGenFunction::EmitBlockWithFallThrough(llvm::BasicBlock *BB,
-                                               const Stmt *S) {
-  llvm::BasicBlock *SkipCountBB = nullptr;
-  if (HaveInsertPoint() && CGM.getCodeGenOpts().hasProfileClangInstr()) {
-    // When instrumenting for profiling, the fallthrough to certain
-    // statements needs to skip over the instrumentation code so that we
-    // get an accurate count.
-    SkipCountBB = createBasicBlock("skipcount");
-    EmitBranch(SkipCountBB);
-  }
-  EmitBlock(BB);
-  uint64_t CurrentCount = getCurrentProfileCount();
-  incrementProfileCounter(S);
-  setCurrentProfileCount(getCurrentProfileCount() + CurrentCount);
-  if (SkipCountBB)
-    EmitBlock(SkipCountBB);
-}
-
-/// Tries to mark the given function nounwind based on the
-/// non-existence of any throwing calls within it.  We believe this is
-/// lightweight enough to do at -O0.
-static void TryMarkNoThrow(llvm::Function *F) {
-  // LLVM treats 'nounwind' on a function as part of the type, so we
-  // can't do this on functions that can be overwritten.
-  if (F->isInterposable()) return;
-
-  for (llvm::BasicBlock &BB : *F)
-    for (llvm::Instruction &I : BB)
-      if (I.mayThrow())
-        return;
-
-  F->setDoesNotThrow();
-}
-
-QualType CodeGenFunction::BuildFunctionArgList(GlobalDecl GD,
-                                               FunctionArgList &Args) {
-  const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
-  QualType ResTy = FD->getReturnType();
-
-  const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD);
-  if (MD && MD->isInstance()) {
-    if (CGM.getCXXABI().HasThisReturn(GD))
-      ResTy = MD->getThisType();
-    else if (CGM.getCXXABI().hasMostDerivedReturn(GD))
-      ResTy = CGM.getContext().VoidPtrTy;
-    CGM.getCXXABI().buildThisParam(*this, Args);
-  }
-
-  // The base version of an inheriting constructor whose constructed base is a
-  // virtual base is not passed any arguments (because it doesn't actually call
-  // the inherited constructor).
-  bool PassedParams = true;
-  if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD))
-    if (auto Inherited = CD->getInheritedConstructor())
-      PassedParams =
-          getTypes().inheritingCtorHasParams(Inherited, GD.getCtorType());
-
-  if (PassedParams) {
-    for (auto *Param : FD->parameters()) {
-      Args.push_back(Param);
-      if (!Param->hasAttr<PassObjectSizeAttr>())
-        continue;
-
-      auto *Implicit = ImplicitParamDecl::Create(
-          getContext(), Param->getDeclContext(), Param->getLocation(),
-          /*Id=*/nullptr, getContext().getSizeType(), ImplicitParamDecl::Other);
-      SizeArguments[Param] = Implicit;
-      Args.push_back(Implicit);
-    }
-  }
-
-  if (MD && (isa<CXXConstructorDecl>(MD) || isa<CXXDestructorDecl>(MD)))
-    CGM.getCXXABI().addImplicitStructorParams(*this, ResTy, Args);
-
-  return ResTy;
-}
-
-void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
-                                   const CGFunctionInfo &FnInfo) {
-  assert(Fn && "generating code for null Function");
-  const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
-  CurGD = GD;
-
-  FunctionArgList Args;
-  QualType ResTy = BuildFunctionArgList(GD, Args);
-
-  if (FD->isInlineBuiltinDeclaration()) {
-    // When generating code for a builtin with an inline declaration, use a
-    // mangled name to hold the actual body, while keeping an external
-    // definition in case the function pointer is referenced somewhere.
-    std::string FDInlineName = (Fn->getName() + ".inline").str();
-    llvm::Module *M = Fn->getParent();
-    llvm::Function *Clone = M->getFunction(FDInlineName);
-    if (!Clone) {
-      Clone = llvm::Function::Create(Fn->getFunctionType(),
-                                     llvm::GlobalValue::InternalLinkage,
-                                     Fn->getAddressSpace(), FDInlineName, M);
-      Clone->addFnAttr(llvm::Attribute::AlwaysInline);
-    }
-    Fn->setLinkage(llvm::GlobalValue::ExternalLinkage);
-    Fn = Clone;
-  } else {
-    // Detect the unusual situation where an inline version is shadowed by a
-    // non-inline version. In that case we should pick the external one
-    // everywhere. That's GCC behavior too. Unfortunately, I cannot find a way
-    // to detect that situation before we reach codegen, so do some late
-    // replacement.
-    for (const FunctionDecl *PD = FD->getPreviousDecl(); PD;
-         PD = PD->getPreviousDecl()) {
-      if (LLVM_UNLIKELY(PD->isInlineBuiltinDeclaration())) {
-        std::string FDInlineName = (Fn->getName() + ".inline").str();
-        llvm::Module *M = Fn->getParent();
-        if (llvm::Function *Clone = M->getFunction(FDInlineName)) {
-          Clone->replaceAllUsesWith(Fn);
-          Clone->eraseFromParent();
-        }
-        break;
-      }
-    }
-  }
-
-  // Check if we should generate debug info for this function.
-  if (FD->hasAttr<NoDebugAttr>()) {
-    // Clear non-distinct debug info that was possibly attached to the function
-    // due to an earlier declaration without the nodebug attribute
-    Fn->setSubprogram(nullptr);
-    // Disable debug info indefinitely for this function
-    DebugInfo = nullptr;
-  }
-
-  // The function might not have a body if we're generating thunks for a
-  // function declaration.
-  SourceRange BodyRange;
-  if (Stmt *Body = FD->getBody())
-    BodyRange = Body->getSourceRange();
-  else
-    BodyRange = FD->getLocation();
-  CurEHLocation = BodyRange.getEnd();
-
-  // Use the location of the start of the function to determine where
-  // the function definition is located. By default use the location
-  // of the declaration as the location for the subprogram. A function
-  // may lack a declaration in the source code if it is created by code
-  // gen. (examples: _GLOBAL__I_a, __cxx_global_array_dtor, thunk).
-  SourceLocation Loc = FD->getLocation();
-
-  // If this is a function specialization then use the pattern body
-  // as the location for the function.
-  if (const FunctionDecl *SpecDecl = FD->getTemplateInstantiationPattern())
-    if (SpecDecl->hasBody(SpecDecl))
-      Loc = SpecDecl->getLocation();
-
-  Stmt *Body = FD->getBody();
-
-  if (Body) {
-    // Coroutines always emit lifetime markers.
-    if (isa<CoroutineBodyStmt>(Body))
-      ShouldEmitLifetimeMarkers = true;
-
-    // Initialize helper which will detect jumps which can cause invalid
-    // lifetime markers.
-    if (ShouldEmitLifetimeMarkers)
-      Bypasses.Init(Body);
-  }
-
-  // Emit the standard function prologue.
-  StartFunction(GD, ResTy, Fn, FnInfo, Args, Loc, BodyRange.getBegin());
-
-  // Save parameters for coroutine function.
-  if (Body && isa_and_nonnull<CoroutineBodyStmt>(Body))
-    for (const auto *ParamDecl : FD->parameters())
-      FnArgs.push_back(ParamDecl);
-
-  // Generate the body of the function.
-  PGO.assignRegionCounters(GD, CurFn);
-  if (isa<CXXDestructorDecl>(FD))
-    EmitDestructorBody(Args);
-  else if (isa<CXXConstructorDecl>(FD))
-    EmitConstructorBody(Args);
-  else if (getLangOpts().CUDA &&
-           !getLangOpts().CUDAIsDevice &&
-           FD->hasAttr<CUDAGlobalAttr>())
-    CGM.getCUDARuntime().emitDeviceStub(*this, Args);
-  else if (isa<CXXMethodDecl>(FD) &&
-           cast<CXXMethodDecl>(FD)->isLambdaStaticInvoker()) {
-    // The lambda static invoker function is special, because it forwards or
-    // clones the body of the function call operator (but is actually static).
-    EmitLambdaStaticInvokeBody(cast<CXXMethodDecl>(FD));
-  } else if (FD->isDefaulted() && isa<CXXMethodDecl>(FD) &&
-             (cast<CXXMethodDecl>(FD)->isCopyAssignmentOperator() ||
-              cast<CXXMethodDecl>(FD)->isMoveAssignmentOperator())) {
-    // Implicit copy-assignment gets the same special treatment as implicit
-    // copy-constructors.
-    emitImplicitAssignmentOperatorBody(Args);
-  } else if (Body) {
-    EmitFunctionBody(Body);
-  } else
-    llvm_unreachable("no definition for emitted function");
-
-  // C++11 [stmt.return]p2:
-  //   Flowing off the end of a function [...] results in undefined behavior in
-  //   a value-returning function.
-  // C11 6.9.1p12:
-  //   If the '}' that terminates a function is reached, and the value of the
-  //   function call is used by the caller, the behavior is undefined.
-  if (getLangOpts().CPlusPlus && !FD->hasImplicitReturnZero() && !SawAsmBlock &&
-      !FD->getReturnType()->isVoidType() && Builder.GetInsertBlock()) {
-    bool ShouldEmitUnreachable =
-        CGM.getCodeGenOpts().StrictReturn ||
-        !CGM.MayDropFunctionReturn(FD->getASTContext(), FD->getReturnType());
-    if (SanOpts.has(SanitizerKind::Return)) {
-      SanitizerScope SanScope(this);
-      llvm::Value *IsFalse = Builder.getFalse();
-      EmitCheck(std::make_pair(IsFalse, SanitizerKind::Return),
-                SanitizerHandler::MissingReturn,
-                EmitCheckSourceLocation(FD->getLocation()), None);
-    } else if (ShouldEmitUnreachable) {
-      if (CGM.getCodeGenOpts().OptimizationLevel == 0)
-        EmitTrapCall(llvm::Intrinsic::trap);
-    }
-    if (SanOpts.has(SanitizerKind::Return) || ShouldEmitUnreachable) {
-      Builder.CreateUnreachable();
-      Builder.ClearInsertionPoint();
-    }
-  }
-
-  // Emit the standard function epilogue.
-  FinishFunction(BodyRange.getEnd());
-
-  // If we haven't marked the function nothrow through other means, do
-  // a quick pass now to see if we can.
-  if (!CurFn->doesNotThrow())
-    TryMarkNoThrow(CurFn);
-}
-
-/// ContainsLabel - Return true if the statement contains a label in it.  If
-/// this statement is not executed normally, it not containing a label means
-/// that we can just remove the code.
-bool CodeGenFunction::ContainsLabel(const Stmt *S, bool IgnoreCaseStmts) {
-  // Null statement, not a label!
-  if (!S) return false;
-
-  // If this is a label, we have to emit the code, consider something like:
-  // if (0) {  ...  foo:  bar(); }  goto foo;
-  //
-  // TODO: If anyone cared, we could track __label__'s, since we know that you
-  // can't jump to one from outside their declared region.
-  if (isa<LabelStmt>(S))
-    return true;
-
-  // If this is a case/default statement, and we haven't seen a switch, we have
-  // to emit the code.
-  if (isa<SwitchCase>(S) && !IgnoreCaseStmts)
-    return true;
-
-  // If this is a switch statement, we want to ignore cases below it.
-  if (isa<SwitchStmt>(S))
-    IgnoreCaseStmts = true;
-
-  // Scan subexpressions for verboten labels.
-  for (const Stmt *SubStmt : S->children())
-    if (ContainsLabel(SubStmt, IgnoreCaseStmts))
-      return true;
-
-  return false;
-}
-
-/// containsBreak - Return true if the statement contains a break out of it.
-/// If the statement (recursively) contains a switch or loop with a break
-/// inside of it, this is fine.
-bool CodeGenFunction::containsBreak(const Stmt *S) {
-  // Null statement, not a label!
-  if (!S) return false;
-
-  // If this is a switch or loop that defines its own break scope, then we can
-  // include it and anything inside of it.
-  if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) || isa<DoStmt>(S) ||
-      isa<ForStmt>(S))
-    return false;
-
-  if (isa<BreakStmt>(S))
-    return true;
-
-  // Scan subexpressions for verboten breaks.
-  for (const Stmt *SubStmt : S->children())
-    if (containsBreak(SubStmt))
-      return true;
-
-  return false;
-}
-
-bool CodeGenFunction::mightAddDeclToScope(const Stmt *S) {
-  if (!S) return false;
-
-  // Some statement kinds add a scope and thus never add a decl to the current
-  // scope. Note, this list is longer than the list of statements that might
-  // have an unscoped decl nested within them, but this way is conservatively
-  // correct even if more statement kinds are added.
-  if (isa<IfStmt>(S) || isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
-      isa<DoStmt>(S) || isa<ForStmt>(S) || isa<CompoundStmt>(S) ||
-      isa<CXXForRangeStmt>(S) || isa<CXXTryStmt>(S) ||
-      isa<ObjCForCollectionStmt>(S) || isa<ObjCAtTryStmt>(S))
-    return false;
-
-  if (isa<DeclStmt>(S))
-    return true;
-
-  for (const Stmt *SubStmt : S->children())
-    if (mightAddDeclToScope(SubStmt))
-      return true;
-
-  return false;
-}
-
-/// ConstantFoldsToSimpleInteger - If the specified expression does not fold
-/// to a constant, or if it does but contains a label, return false.  If it
-/// constant folds return true and set the boolean result in Result.
-bool CodeGenFunction::ConstantFoldsToSimpleInteger(const Expr *Cond,
-                                                   bool &ResultBool,
-                                                   bool AllowLabels) {
-  llvm::APSInt ResultInt;
-  if (!ConstantFoldsToSimpleInteger(Cond, ResultInt, AllowLabels))
-    return false;
-
-  ResultBool = ResultInt.getBoolValue();
-  return true;
-}
-
-/// ConstantFoldsToSimpleInteger - If the specified expression does not fold
-/// to a constant, or if it does but contains a label, return false.  If it
-/// constant folds return true and set the folded value.
-bool CodeGenFunction::ConstantFoldsToSimpleInteger(const Expr *Cond,
-                                                   llvm::APSInt &ResultInt,
-                                                   bool AllowLabels) {
-  // FIXME: Rename and handle conversion of other evaluatable things
-  // to bool.
-  Expr::EvalResult Result;
-  if (!Cond->EvaluateAsInt(Result, getContext()))
-    return false;  // Not foldable, not integer or not fully evaluatable.
-
-  llvm::APSInt Int = Result.Val.getInt();
-  if (!AllowLabels && CodeGenFunction::ContainsLabel(Cond))
-    return false;  // Contains a label.
-
-  ResultInt = Int;
-  return true;
-}
-
-/// Determine whether the given condition is an instrumentable condition
-/// (i.e. no "&&" or "||").
-bool CodeGenFunction::isInstrumentedCondition(const Expr *C) {
-  // Bypass simplistic logical-NOT operator before determining whether the
-  // condition contains any other logical operator.
-  if (const UnaryOperator *UnOp = dyn_cast<UnaryOperator>(C->IgnoreParens()))
-    if (UnOp->getOpcode() == UO_LNot)
-      C = UnOp->getSubExpr();
-
-  const BinaryOperator *BOp = dyn_cast<BinaryOperator>(C->IgnoreParens());
-  return (!BOp || !BOp->isLogicalOp());
-}
-
-/// EmitBranchToCounterBlock - Emit a conditional branch to a new block that
-/// increments a profile counter based on the semantics of the given logical
-/// operator opcode.  This is used to instrument branch condition coverage for
-/// logical operators.
-void CodeGenFunction::EmitBranchToCounterBlock(
-    const Expr *Cond, BinaryOperator::Opcode LOp, llvm::BasicBlock *TrueBlock,
-    llvm::BasicBlock *FalseBlock, uint64_t TrueCount /* = 0 */,
-    Stmt::Likelihood LH /* =None */, const Expr *CntrIdx /* = nullptr */) {
-  // If not instrumenting, just emit a branch.
-  bool InstrumentRegions = CGM.getCodeGenOpts().hasProfileClangInstr();
-  if (!InstrumentRegions || !isInstrumentedCondition(Cond))
-    return EmitBranchOnBoolExpr(Cond, TrueBlock, FalseBlock, TrueCount, LH);
-
-  llvm::BasicBlock *ThenBlock = nullptr;
-  llvm::BasicBlock *ElseBlock = nullptr;
-  llvm::BasicBlock *NextBlock = nullptr;
-
-  // Create the block we'll use to increment the appropriate counter.
-  llvm::BasicBlock *CounterIncrBlock = createBasicBlock("lop.rhscnt");
-
-  // Set block pointers according to Logical-AND (BO_LAnd) semantics. This
-  // means we need to evaluate the condition and increment the counter on TRUE:
-  //
-  // if (Cond)
-  //   goto CounterIncrBlock;
-  // else
-  //   goto FalseBlock;
-  //
-  // CounterIncrBlock:
-  //   Counter++;
-  //   goto TrueBlock;
-
-  if (LOp == BO_LAnd) {
-    ThenBlock = CounterIncrBlock;
-    ElseBlock = FalseBlock;
-    NextBlock = TrueBlock;
-  }
-
-  // Set block pointers according to Logical-OR (BO_LOr) semantics. This means
-  // we need to evaluate the condition and increment the counter on FALSE:
-  //
-  // if (Cond)
-  //   goto TrueBlock;
-  // else
-  //   goto CounterIncrBlock;
-  //
-  // CounterIncrBlock:
-  //   Counter++;
-  //   goto FalseBlock;
-
-  else if (LOp == BO_LOr) {
-    ThenBlock = TrueBlock;
-    ElseBlock = CounterIncrBlock;
-    NextBlock = FalseBlock;
-  } else {
-    llvm_unreachable("Expected Opcode must be that of a Logical Operator");
-  }
-
-  // Emit Branch based on condition.
-  EmitBranchOnBoolExpr(Cond, ThenBlock, ElseBlock, TrueCount, LH);
-
-  // Emit the block containing the counter increment(s).
-  EmitBlock(CounterIncrBlock);
-
-  // Increment corresponding counter; if index not provided, use Cond as index.
-  incrementProfileCounter(CntrIdx ? CntrIdx : Cond);
-
-  // Go to the next block.
-  EmitBranch(NextBlock);
-}
-
-/// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an if
-/// statement) to the specified blocks.  Based on the condition, this might try
-/// to simplify the codegen of the conditional based on the branch.
-/// \param LH The value of the likelihood attribute on the True branch.
-void CodeGenFunction::EmitBranchOnBoolExpr(const Expr *Cond,
-                                           llvm::BasicBlock *TrueBlock,
-                                           llvm::BasicBlock *FalseBlock,
-                                           uint64_t TrueCount,
-                                           Stmt::Likelihood LH) {
-  Cond = Cond->IgnoreParens();
-
-  if (const BinaryOperator *CondBOp = dyn_cast<BinaryOperator>(Cond)) {
-
-    // Handle X && Y in a condition.
-    if (CondBOp->getOpcode() == BO_LAnd) {
-      // If we have "1 && X", simplify the code.  "0 && X" would have constant
-      // folded if the case was simple enough.
-      bool ConstantBool = false;
-      if (ConstantFoldsToSimpleInteger(CondBOp->getLHS(), ConstantBool) &&
-          ConstantBool) {
-        // br(1 && X) -> br(X).
-        incrementProfileCounter(CondBOp);
-        return EmitBranchToCounterBlock(CondBOp->getRHS(), BO_LAnd, TrueBlock,
-                                        FalseBlock, TrueCount, LH);
-      }
-
-      // If we have "X && 1", simplify the code to use an uncond branch.
-      // "X && 0" would have been constant folded to 0.
-      if (ConstantFoldsToSimpleInteger(CondBOp->getRHS(), ConstantBool) &&
-          ConstantBool) {
-        // br(X && 1) -> br(X).
-        return EmitBranchToCounterBlock(CondBOp->getLHS(), BO_LAnd, TrueBlock,
-                                        FalseBlock, TrueCount, LH, CondBOp);
-      }
-
-      // Emit the LHS as a conditional.  If the LHS conditional is false, we
-      // want to jump to the FalseBlock.
-      llvm::BasicBlock *LHSTrue = createBasicBlock("land.lhs.true");
-      // The counter tells us how often we evaluate RHS, and all of TrueCount
-      // can be propagated to that branch.
-      uint64_t RHSCount = getProfileCount(CondBOp->getRHS());
-
-      ConditionalEvaluation eval(*this);
-      {
-        ApplyDebugLocation DL(*this, Cond);
-        // Propagate the likelihood attribute like __builtin_expect
-        // __builtin_expect(X && Y, 1) -> X and Y are likely
-        // __builtin_expect(X && Y, 0) -> only Y is unlikely
-        EmitBranchOnBoolExpr(CondBOp->getLHS(), LHSTrue, FalseBlock, RHSCount,
-                             LH == Stmt::LH_Unlikely ? Stmt::LH_None : LH);
-        EmitBlock(LHSTrue);
-      }
-
-      incrementProfileCounter(CondBOp);
-      setCurrentProfileCount(getProfileCount(CondBOp->getRHS()));
-
-      // Any temporaries created here are conditional.
-      eval.begin(*this);
-      EmitBranchToCounterBlock(CondBOp->getRHS(), BO_LAnd, TrueBlock,
-                               FalseBlock, TrueCount, LH);
-      eval.end(*this);
-
-      return;
-    }
-
-    if (CondBOp->getOpcode() == BO_LOr) {
-      // If we have "0 || X", simplify the code.  "1 || X" would have constant
-      // folded if the case was simple enough.
-      bool ConstantBool = false;
-      if (ConstantFoldsToSimpleInteger(CondBOp->getLHS(), ConstantBool) &&
-          !ConstantBool) {
-        // br(0 || X) -> br(X).
-        incrementProfileCounter(CondBOp);
-        return EmitBranchToCounterBlock(CondBOp->getRHS(), BO_LOr, TrueBlock,
-                                        FalseBlock, TrueCount, LH);
-      }
-
-      // If we have "X || 0", simplify the code to use an uncond branch.
-      // "X || 1" would have been constant folded to 1.
-      if (ConstantFoldsToSimpleInteger(CondBOp->getRHS(), ConstantBool) &&
-          !ConstantBool) {
-        // br(X || 0) -> br(X).
-        return EmitBranchToCounterBlock(CondBOp->getLHS(), BO_LOr, TrueBlock,
-                                        FalseBlock, TrueCount, LH, CondBOp);
-      }
-
-      // Emit the LHS as a conditional.  If the LHS conditional is true, we
-      // want to jump to the TrueBlock.
-      llvm::BasicBlock *LHSFalse = createBasicBlock("lor.lhs.false");
-      // We have the count for entry to the RHS and for the whole expression
-      // being true, so we can divy up True count between the short circuit and
-      // the RHS.
-      uint64_t LHSCount =
-          getCurrentProfileCount() - getProfileCount(CondBOp->getRHS());
-      uint64_t RHSCount = TrueCount - LHSCount;
-
-      ConditionalEvaluation eval(*this);
-      {
-        // Propagate the likelihood attribute like __builtin_expect
-        // __builtin_expect(X || Y, 1) -> only Y is likely
-        // __builtin_expect(X || Y, 0) -> both X and Y are unlikely
-        ApplyDebugLocation DL(*this, Cond);
-        EmitBranchOnBoolExpr(CondBOp->getLHS(), TrueBlock, LHSFalse, LHSCount,
-                             LH == Stmt::LH_Likely ? Stmt::LH_None : LH);
-        EmitBlock(LHSFalse);
-      }
-
-      incrementProfileCounter(CondBOp);
-      setCurrentProfileCount(getProfileCount(CondBOp->getRHS()));
-
-      // Any temporaries created here are conditional.
-      eval.begin(*this);
-      EmitBranchToCounterBlock(CondBOp->getRHS(), BO_LOr, TrueBlock, FalseBlock,
-                               RHSCount, LH);
-
-      eval.end(*this);
-
-      return;
-    }
-  }
-
-  if (const UnaryOperator *CondUOp = dyn_cast<UnaryOperator>(Cond)) {
-    // br(!x, t, f) -> br(x, f, t)
-    if (CondUOp->getOpcode() == UO_LNot) {
-      // Negate the count.
-      uint64_t FalseCount = getCurrentProfileCount() - TrueCount;
-      // The values of the enum are chosen to make this negation possible.
-      LH = static_cast<Stmt::Likelihood>(-LH);
-      // Negate the condition and swap the destination blocks.
-      return EmitBranchOnBoolExpr(CondUOp->getSubExpr(), FalseBlock, TrueBlock,
-                                  FalseCount, LH);
-    }
-  }
-
-  if (const ConditionalOperator *CondOp = dyn_cast<ConditionalOperator>(Cond)) {
-    // br(c ? x : y, t, f) -> br(c, br(x, t, f), br(y, t, f))
-    llvm::BasicBlock *LHSBlock = createBasicBlock("cond.true");
-    llvm::BasicBlock *RHSBlock = createBasicBlock("cond.false");
-
-    // The ConditionalOperator itself has no likelihood information for its
-    // true and false branches. This matches the behavior of __builtin_expect.
-    ConditionalEvaluation cond(*this);
-    EmitBranchOnBoolExpr(CondOp->getCond(), LHSBlock, RHSBlock,
-                         getProfileCount(CondOp), Stmt::LH_None);
-
-    // When computing PGO branch weights, we only know the overall count for
-    // the true block. This code is essentially doing tail duplication of the
-    // naive code-gen, introducing new edges for which counts are not
-    // available. Divide the counts proportionally between the LHS and RHS of
-    // the conditional operator.
-    uint64_t LHSScaledTrueCount = 0;
-    if (TrueCount) {
-      double LHSRatio =
-          getProfileCount(CondOp) / (double)getCurrentProfileCount();
-      LHSScaledTrueCount = TrueCount * LHSRatio;
-    }
-
-    cond.begin(*this);
-    EmitBlock(LHSBlock);
-    incrementProfileCounter(CondOp);
-    {
-      ApplyDebugLocation DL(*this, Cond);
-      EmitBranchOnBoolExpr(CondOp->getLHS(), TrueBlock, FalseBlock,
-                           LHSScaledTrueCount, LH);
-    }
-    cond.end(*this);
-
-    cond.begin(*this);
-    EmitBlock(RHSBlock);
-    EmitBranchOnBoolExpr(CondOp->getRHS(), TrueBlock, FalseBlock,
-                         TrueCount - LHSScaledTrueCount, LH);
-    cond.end(*this);
-
-    return;
-  }
-
-  if (const CXXThrowExpr *Throw = dyn_cast<CXXThrowExpr>(Cond)) {
-    // Conditional operator handling can give us a throw expression as a
-    // condition for a case like:
-    //   br(c ? throw x : y, t, f) -> br(c, br(throw x, t, f), br(y, t, f)
-    // Fold this to:
-    //   br(c, throw x, br(y, t, f))
-    EmitCXXThrowExpr(Throw, /*KeepInsertionPoint*/false);
-    return;
-  }
-
-  // Emit the code with the fully general case.
-  llvm::Value *CondV;
-  {
-    ApplyDebugLocation DL(*this, Cond);
-    CondV = EvaluateExprAsBool(Cond);
-  }
-
-  llvm::MDNode *Weights = nullptr;
-  llvm::MDNode *Unpredictable = nullptr;
-
-  // If the branch has a condition wrapped by __builtin_unpredictable,
-  // create metadata that specifies that the branch is unpredictable.
-  // Don't bother if not optimizing because that metadata would not be used.
-  auto *Call = dyn_cast<CallExpr>(Cond->IgnoreImpCasts());
-  if (Call && CGM.getCodeGenOpts().OptimizationLevel != 0) {
-    auto *FD = dyn_cast_or_null<FunctionDecl>(Call->getCalleeDecl());
-    if (FD && FD->getBuiltinID() == Builtin::BI__builtin_unpredictable) {
-      llvm::MDBuilder MDHelper(getLLVMContext());
-      Unpredictable = MDHelper.createUnpredictable();
-    }
-  }
-
-  // If there is a Likelihood knowledge for the cond, lower it.
-  // Note that if not optimizing this won't emit anything.
-  llvm::Value *NewCondV = emitCondLikelihoodViaExpectIntrinsic(CondV, LH);
-  if (CondV != NewCondV)
-    CondV = NewCondV;
-  else {
-    // Otherwise, lower profile counts. Note that we do this even at -O0.
-    uint64_t CurrentCount = std::max(getCurrentProfileCount(), TrueCount);
-    Weights = createProfileWeights(TrueCount, CurrentCount - TrueCount);
-  }
-
-  Builder.CreateCondBr(CondV, TrueBlock, FalseBlock, Weights, Unpredictable);
-}
-
-/// ErrorUnsupported - Print out an error that codegen doesn't support the
-/// specified stmt yet.
-void CodeGenFunction::ErrorUnsupported(const Stmt *S, const char *Type) {
-  CGM.ErrorUnsupported(S, Type);
-}
-
-/// emitNonZeroVLAInit - Emit the "zero" initialization of a
-/// variable-length array whose elements have a non-zero bit-pattern.
-///
-/// \param baseType the inner-most element type of the array
-/// \param src - a char* pointing to the bit-pattern for a single
-/// base element of the array
-/// \param sizeInChars - the total size of the VLA, in chars
-static void emitNonZeroVLAInit(CodeGenFunction &CGF, QualType baseType,
-                               Address dest, Address src,
-                               llvm::Value *sizeInChars) {
-  CGBuilderTy &Builder = CGF.Builder;
-
-  CharUnits baseSize = CGF.getContext().getTypeSizeInChars(baseType);
-  llvm::Value *baseSizeInChars
-    = llvm::ConstantInt::get(CGF.IntPtrTy, baseSize.getQuantity());
-
-  Address begin =
-    Builder.CreateElementBitCast(dest, CGF.Int8Ty, "vla.begin");
-  llvm::Value *end = Builder.CreateInBoundsGEP(
-      begin.getElementType(), begin.getPointer(), sizeInChars, "vla.end");
-
-  llvm::BasicBlock *originBB = CGF.Builder.GetInsertBlock();
-  llvm::BasicBlock *loopBB = CGF.createBasicBlock("vla-init.loop");
-  llvm::BasicBlock *contBB = CGF.createBasicBlock("vla-init.cont");
-
-  // Make a loop over the VLA.  C99 guarantees that the VLA element
-  // count must be nonzero.
-  CGF.EmitBlock(loopBB);
-
-  llvm::PHINode *cur = Builder.CreatePHI(begin.getType(), 2, "vla.cur");
-  cur->addIncoming(begin.getPointer(), originBB);
-
-  CharUnits curAlign =
-    dest.getAlignment().alignmentOfArrayElement(baseSize);
-
-  // memcpy the individual element bit-pattern.
-  Builder.CreateMemCpy(Address(cur, curAlign), src, baseSizeInChars,
-                       /*volatile*/ false);
-
-  // Go to the next element.
-  llvm::Value *next =
-    Builder.CreateInBoundsGEP(CGF.Int8Ty, cur, baseSizeInChars, "vla.next");
-
-  // Leave if that's the end of the VLA.
-  llvm::Value *done = Builder.CreateICmpEQ(next, end, "vla-init.isdone");
-  Builder.CreateCondBr(done, contBB, loopBB);
-  cur->addIncoming(next, loopBB);
-
-  CGF.EmitBlock(contBB);
-}
-
-void
-CodeGenFunction::EmitNullInitialization(Address DestPtr, QualType Ty) {
-  // Ignore empty classes in C++.
-  if (getLangOpts().CPlusPlus) {
-    if (const RecordType *RT = Ty->getAs<RecordType>()) {
-      if (cast<CXXRecordDecl>(RT->getDecl())->isEmpty())
-        return;
-    }
-  }
-
-  // Cast the dest ptr to the appropriate i8 pointer type.
-  if (DestPtr.getElementType() != Int8Ty)
-    DestPtr = Builder.CreateElementBitCast(DestPtr, Int8Ty);
-
-  // Get size and alignment info for this aggregate.
-  CharUnits size = getContext().getTypeSizeInChars(Ty);
-
-  llvm::Value *SizeVal;
-  const VariableArrayType *vla;
-
-  // Don't bother emitting a zero-byte memset.
-  if (size.isZero()) {
-    // But note that getTypeInfo returns 0 for a VLA.
-    if (const VariableArrayType *vlaType =
-          dyn_cast_or_null<VariableArrayType>(
-                                          getContext().getAsArrayType(Ty))) {
-      auto VlaSize = getVLASize(vlaType);
-      SizeVal = VlaSize.NumElts;
-      CharUnits eltSize = getContext().getTypeSizeInChars(VlaSize.Type);
-      if (!eltSize.isOne())
-        SizeVal = Builder.CreateNUWMul(SizeVal, CGM.getSize(eltSize));
-      vla = vlaType;
-    } else {
-      return;
-    }
-  } else {
-    SizeVal = CGM.getSize(size);
-    vla = nullptr;
-  }
-
-  // If the type contains a pointer to data member we can't memset it to zero.
-  // Instead, create a null constant and copy it to the destination.
-  // TODO: there are other patterns besides zero that we can usefully memset,
-  // like -1, which happens to be the pattern used by member-pointers.
-  if (!CGM.getTypes().isZeroInitializable(Ty)) {
-    // For a VLA, emit a single element, then splat that over the VLA.
-    if (vla) Ty = getContext().getBaseElementType(vla);
-
-    llvm::Constant *NullConstant = CGM.EmitNullConstant(Ty);
-
-    llvm::GlobalVariable *NullVariable =
-      new llvm::GlobalVariable(CGM.getModule(), NullConstant->getType(),
-                               /*isConstant=*/true,
-                               llvm::GlobalVariable::PrivateLinkage,
-                               NullConstant, Twine());
-    CharUnits NullAlign = DestPtr.getAlignment();
-    NullVariable->setAlignment(NullAlign.getAsAlign());
-    Address SrcPtr(Builder.CreateBitCast(NullVariable, Builder.getInt8PtrTy()),
-                   NullAlign);
-
-    if (vla) return emitNonZeroVLAInit(*this, Ty, DestPtr, SrcPtr, SizeVal);
-
-    // Get and call the appropriate llvm.memcpy overload.
-    Builder.CreateMemCpy(DestPtr, SrcPtr, SizeVal, false);
-    return;
-  }
-
-  // Otherwise, just memset the whole thing to zero.  This is legal
-  // because in LLVM, all default initializers (other than the ones we just
-  // handled above) are guaranteed to have a bit pattern of all zeros.
-  Builder.CreateMemSet(DestPtr, Builder.getInt8(0), SizeVal, false);
-}
-
-llvm::BlockAddress *CodeGenFunction::GetAddrOfLabel(const LabelDecl *L) {
-  // Make sure that there is a block for the indirect goto.
-  if (!IndirectBranch)
-    GetIndirectGotoBlock();
-
-  llvm::BasicBlock *BB = getJumpDestForLabel(L).getBlock();
-
-  // Make sure the indirect branch includes all of the address-taken blocks.
-  IndirectBranch->addDestination(BB);
-  return llvm::BlockAddress::get(CurFn, BB);
-}
-
-llvm::BasicBlock *CodeGenFunction::GetIndirectGotoBlock() {
-  // If we already made the indirect branch for indirect goto, return its block.
-  if (IndirectBranch) return IndirectBranch->getParent();
-
-  CGBuilderTy TmpBuilder(*this, createBasicBlock("indirectgoto"));
-
-  // Create the PHI node that indirect gotos will add entries to.
-  llvm::Value *DestVal = TmpBuilder.CreatePHI(Int8PtrTy, 0,
-                                              "indirect.goto.dest");
-
-  // Create the indirect branch instruction.
-  IndirectBranch = TmpBuilder.CreateIndirectBr(DestVal);
-  return IndirectBranch->getParent();
-}
-
-/// Computes the length of an array in elements, as well as the base
-/// element type and a properly-typed first element pointer.
-llvm::Value *CodeGenFunction::emitArrayLength(const ArrayType *origArrayType,
-                                              QualType &baseType,
-                                              Address &addr) {
-  const ArrayType *arrayType = origArrayType;
-
-  // If it's a VLA, we have to load the stored size.  Note that
-  // this is the size of the VLA in bytes, not its size in elements.
-  llvm::Value *numVLAElements = nullptr;
-  if (isa<VariableArrayType>(arrayType)) {
-    numVLAElements = getVLASize(cast<VariableArrayType>(arrayType)).NumElts;
-
-    // Walk into all VLAs.  This doesn't require changes to addr,
-    // which has type T* where T is the first non-VLA element type.
-    do {
-      QualType elementType = arrayType->getElementType();
-      arrayType = getContext().getAsArrayType(elementType);
-
-      // If we only have VLA components, 'addr' requires no adjustment.
-      if (!arrayType) {
-        baseType = elementType;
-        return numVLAElements;
-      }
-    } while (isa<VariableArrayType>(arrayType));
-
-    // We get out here only if we find a constant array type
-    // inside the VLA.
-  }
-
-  // We have some number of constant-length arrays, so addr should
-  // have LLVM type [M x [N x [...]]]*.  Build a GEP that walks
-  // down to the first element of addr.
-  SmallVector<llvm::Value*, 8> gepIndices;
-
-  // GEP down to the array type.
-  llvm::ConstantInt *zero = Builder.getInt32(0);
-  gepIndices.push_back(zero);
-
-  uint64_t countFromCLAs = 1;
-  QualType eltType;
-
-  llvm::ArrayType *llvmArrayType =
-    dyn_cast<llvm::ArrayType>(addr.getElementType());
-  while (llvmArrayType) {
-    assert(isa<ConstantArrayType>(arrayType));
-    assert(cast<ConstantArrayType>(arrayType)->getSize().getZExtValue()
-             == llvmArrayType->getNumElements());
-
-    gepIndices.push_back(zero);
-    countFromCLAs *= llvmArrayType->getNumElements();
-    eltType = arrayType->getElementType();
-
-    llvmArrayType =
-      dyn_cast<llvm::ArrayType>(llvmArrayType->getElementType());
-    arrayType = getContext().getAsArrayType(arrayType->getElementType());
-    assert((!llvmArrayType || arrayType) &&
-           "LLVM and Clang types are out-of-synch");
-  }
-
-  if (arrayType) {
-    // From this point onwards, the Clang array type has been emitted
-    // as some other type (probably a packed struct). Compute the array
-    // size, and just emit the 'begin' expression as a bitcast.
-    while (arrayType) {
-      countFromCLAs *=
-          cast<ConstantArrayType>(arrayType)->getSize().getZExtValue();
-      eltType = arrayType->getElementType();
-      arrayType = getContext().getAsArrayType(eltType);
-    }
-
-    llvm::Type *baseType = ConvertType(eltType);
-    addr = Builder.CreateElementBitCast(addr, baseType, "array.begin");
-  } else {
-    // Create the actual GEP.
-    addr = Address(Builder.CreateInBoundsGEP(
-        addr.getElementType(), addr.getPointer(), gepIndices, "array.begin"),
-        ConvertTypeForMem(eltType),
-        addr.getAlignment());
-  }
-
-  baseType = eltType;
-
-  llvm::Value *numElements
-    = llvm::ConstantInt::get(SizeTy, countFromCLAs);
-
-  // If we had any VLA dimensions, factor them in.
-  if (numVLAElements)
-    numElements = Builder.CreateNUWMul(numVLAElements, numElements);
-
-  return numElements;
-}
-
-CodeGenFunction::VlaSizePair CodeGenFunction::getVLASize(QualType type) {
-  const VariableArrayType *vla = getContext().getAsVariableArrayType(type);
-  assert(vla && "type was not a variable array type!");
-  return getVLASize(vla);
-}
-
-CodeGenFunction::VlaSizePair
-CodeGenFunction::getVLASize(const VariableArrayType *type) {
-  // The number of elements so far; always size_t.
-  llvm::Value *numElements = nullptr;
-
-  QualType elementType;
-  do {
-    elementType = type->getElementType();
-    llvm::Value *vlaSize = VLASizeMap[type->getSizeExpr()];
-    assert(vlaSize && "no size for VLA!");
-    assert(vlaSize->getType() == SizeTy);
-
-    if (!numElements) {
-      numElements = vlaSize;
-    } else {
-      // It's undefined behavior if this wraps around, so mark it that way.
-      // FIXME: Teach -fsanitize=undefined to trap this.
-      numElements = Builder.CreateNUWMul(numElements, vlaSize);
-    }
-  } while ((type = getContext().getAsVariableArrayType(elementType)));
-
-  return { numElements, elementType };
-}
-
-CodeGenFunction::VlaSizePair
-CodeGenFunction::getVLAElements1D(QualType type) {
-  const VariableArrayType *vla = getContext().getAsVariableArrayType(type);
-  assert(vla && "type was not a variable array type!");
-  return getVLAElements1D(vla);
-}
-
-CodeGenFunction::VlaSizePair
-CodeGenFunction::getVLAElements1D(const VariableArrayType *Vla) {
-  llvm::Value *VlaSize = VLASizeMap[Vla->getSizeExpr()];
-  assert(VlaSize && "no size for VLA!");
-  assert(VlaSize->getType() == SizeTy);
-  return { VlaSize, Vla->getElementType() };
-}
-
-void CodeGenFunction::EmitVariablyModifiedType(QualType type) {
-  assert(type->isVariablyModifiedType() &&
-         "Must pass variably modified type to EmitVLASizes!");
-
-  EnsureInsertPoint();
-
-  // We're going to walk down into the type and look for VLA
-  // expressions.
-  do {
-    assert(type->isVariablyModifiedType());
-
-    const Type *ty = type.getTypePtr();
-    switch (ty->getTypeClass()) {
-
-#define TYPE(Class, Base)
-#define ABSTRACT_TYPE(Class, Base)
-#define NON_CANONICAL_TYPE(Class, Base)
-#define DEPENDENT_TYPE(Class, Base) case Type::Class:
-#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base)
-#include "clang/AST/TypeNodes.inc"
-      llvm_unreachable("unexpected dependent type!");
-
-    // These types are never variably-modified.
-    case Type::Builtin:
-    case Type::Complex:
-    case Type::Vector:
-    case Type::ExtVector:
-    case Type::ConstantMatrix:
-    case Type::Record:
-    case Type::Enum:
-    case Type::Elaborated:
-    case Type::Using:
-    case Type::TemplateSpecialization:
-    case Type::ObjCTypeParam:
-    case Type::ObjCObject:
-    case Type::ObjCInterface:
-    case Type::ObjCObjectPointer:
-    case Type::BitInt:
-      llvm_unreachable("type class is never variably-modified!");
-
-    case Type::Adjusted:
-      type = cast<AdjustedType>(ty)->getAdjustedType();
-      break;
-
-    case Type::Decayed:
-      type = cast<DecayedType>(ty)->getPointeeType();
-      break;
-
-    case Type::Pointer:
-      type = cast<PointerType>(ty)->getPointeeType();
-      break;
-
-    case Type::BlockPointer:
-      type = cast<BlockPointerType>(ty)->getPointeeType();
-      break;
-
-    case Type::LValueReference:
-    case Type::RValueReference:
-      type = cast<ReferenceType>(ty)->getPointeeType();
-      break;
-
-    case Type::MemberPointer:
-      type = cast<MemberPointerType>(ty)->getPointeeType();
-      break;
-
-    case Type::ConstantArray:
-    case Type::IncompleteArray:
-      // Losing element qualification here is fine.
-      type = cast<ArrayType>(ty)->getElementType();
-      break;
-
-    case Type::VariableArray: {
-      // Losing element qualification here is fine.
-      const VariableArrayType *vat = cast<VariableArrayType>(ty);
-
-      // Unknown size indication requires no size computation.
-      // Otherwise, evaluate and record it.
-      if (const Expr *sizeExpr = vat->getSizeExpr()) {
-        // It's possible that we might have emitted this already,
-        // e.g. with a typedef and a pointer to it.
-        llvm::Value *&entry = VLASizeMap[sizeExpr];
-        if (!entry) {
-          llvm::Value *size = EmitScalarExpr(sizeExpr);
-
-          // C11 6.7.6.2p5:
-          //   If the size is an expression that is not an integer constant
-          //   expression [...] each time it is evaluated it shall have a value
-          //   greater than zero.
-          if (SanOpts.has(SanitizerKind::VLABound)) {
-            SanitizerScope SanScope(this);
-            llvm::Value *Zero = llvm::Constant::getNullValue(size->getType());
-            clang::QualType SEType = sizeExpr->getType();
-            llvm::Value *CheckCondition =
-                SEType->isSignedIntegerType()
-                    ? Builder.CreateICmpSGT(size, Zero)
-                    : Builder.CreateICmpUGT(size, Zero);
-            llvm::Constant *StaticArgs[] = {
-                EmitCheckSourceLocation(sizeExpr->getBeginLoc()),
-                EmitCheckTypeDescriptor(SEType)};
-            EmitCheck(std::make_pair(CheckCondition, SanitizerKind::VLABound),
-                      SanitizerHandler::VLABoundNotPositive, StaticArgs, size);
-          }
-
-          // Always zexting here would be wrong if it weren't
-          // undefined behavior to have a negative bound.
-          // FIXME: What about when size's type is larger than size_t?
-          entry = Builder.CreateIntCast(size, SizeTy, /*signed*/ false);
-        }
-      }
-      type = vat->getElementType();
-      break;
-    }
-
-    case Type::FunctionProto:
-    case Type::FunctionNoProto:
-      type = cast<FunctionType>(ty)->getReturnType();
-      break;
-
-    case Type::Paren:
-    case Type::TypeOf:
-    case Type::UnaryTransform:
-    case Type::Attributed:
-    case Type::SubstTemplateTypeParm:
-    case Type::MacroQualified:
-      // Keep walking after single level desugaring.
-      type = type.getSingleStepDesugaredType(getContext());
-      break;
-
-    case Type::Typedef:
-    case Type::Decltype:
-    case Type::Auto:
-    case Type::DeducedTemplateSpecialization:
-      // Stop walking: nothing to do.
-      return;
-
-    case Type::TypeOfExpr:
-      // Stop walking: emit typeof expression.
-      EmitIgnoredExpr(cast<TypeOfExprType>(ty)->getUnderlyingExpr());
-      return;
-
-    case Type::Atomic:
-      type = cast<AtomicType>(ty)->getValueType();
-      break;
-
-    case Type::Pipe:
-      type = cast<PipeType>(ty)->getElementType();
-      break;
-    }
-  } while (type->isVariablyModifiedType());
-}
-
-Address CodeGenFunction::EmitVAListRef(const Expr* E) {
-  if (getContext().getBuiltinVaListType()->isArrayType())
-    return EmitPointerWithAlignment(E);
-  return EmitLValue(E).getAddress(*this);
-}
-
-Address CodeGenFunction::EmitMSVAListRef(const Expr *E) {
-  return EmitLValue(E).getAddress(*this);
-}
-
-void CodeGenFunction::EmitDeclRefExprDbgValue(const DeclRefExpr *E,
-                                              const APValue &Init) {
-  assert(Init.hasValue() && "Invalid DeclRefExpr initializer!");
-  if (CGDebugInfo *Dbg = getDebugInfo())
-    if (CGM.getCodeGenOpts().hasReducedDebugInfo())
-      Dbg->EmitGlobalVariable(E->getDecl(), Init);
-}
-
-CodeGenFunction::PeepholeProtection
-CodeGenFunction::protectFromPeepholes(RValue rvalue) {
-  // At the moment, the only aggressive peephole we do in IR gen
-  // is trunc(zext) folding, but if we add more, we can easily
-  // extend this protection.
-
-  if (!rvalue.isScalar()) return PeepholeProtection();
-  llvm::Value *value = rvalue.getScalarVal();
-  if (!isa<llvm::ZExtInst>(value)) return PeepholeProtection();
-
-  // Just make an extra bitcast.
-  assert(HaveInsertPoint());
-  llvm::Instruction *inst = new llvm::BitCastInst(value, value->getType(), "",
-                                                  Builder.GetInsertBlock());
-
-  PeepholeProtection protection;
-  protection.Inst = inst;
-  return protection;
-}
-
-void CodeGenFunction::unprotectFromPeepholes(PeepholeProtection protection) {
-  if (!protection.Inst) return;
-
-  // In theory, we could try to duplicate the peepholes now, but whatever.
-  protection.Inst->eraseFromParent();
-}
-
-void CodeGenFunction::emitAlignmentAssumption(llvm::Value *PtrValue,
-                                              QualType Ty, SourceLocation Loc,
-                                              SourceLocation AssumptionLoc,
-                                              llvm::Value *Alignment,
-                                              llvm::Value *OffsetValue) {
-  if (Alignment->getType() != IntPtrTy)
-    Alignment =
-        Builder.CreateIntCast(Alignment, IntPtrTy, false, "casted.align");
-  if (OffsetValue && OffsetValue->getType() != IntPtrTy)
-    OffsetValue =
-        Builder.CreateIntCast(OffsetValue, IntPtrTy, true, "casted.offset");
-  llvm::Value *TheCheck = nullptr;
-  if (SanOpts.has(SanitizerKind::Alignment)) {
-    llvm::Value *PtrIntValue =
-        Builder.CreatePtrToInt(PtrValue, IntPtrTy, "ptrint");
-
-    if (OffsetValue) {
-      bool IsOffsetZero = false;
-      if (const auto *CI = dyn_cast<llvm::ConstantInt>(OffsetValue))
-        IsOffsetZero = CI->isZero();
-
-      if (!IsOffsetZero)
-        PtrIntValue = Builder.CreateSub(PtrIntValue, OffsetValue, "offsetptr");
-    }
-
-    llvm::Value *Zero = llvm::ConstantInt::get(IntPtrTy, 0);
-    llvm::Value *Mask =
-        Builder.CreateSub(Alignment, llvm::ConstantInt::get(IntPtrTy, 1));
-    llvm::Value *MaskedPtr = Builder.CreateAnd(PtrIntValue, Mask, "maskedptr");
-    TheCheck = Builder.CreateICmpEQ(MaskedPtr, Zero, "maskcond");
-  }
-  llvm::Instruction *Assumption = Builder.CreateAlignmentAssumption(
-      CGM.getDataLayout(), PtrValue, Alignment, OffsetValue);
-
-  if (!SanOpts.has(SanitizerKind::Alignment))
-    return;
-  emitAlignmentAssumptionCheck(PtrValue, Ty, Loc, AssumptionLoc, Alignment,
-                               OffsetValue, TheCheck, Assumption);
-}
-
-void CodeGenFunction::emitAlignmentAssumption(llvm::Value *PtrValue,
-                                              const Expr *E,
-                                              SourceLocation AssumptionLoc,
-                                              llvm::Value *Alignment,
-                                              llvm::Value *OffsetValue) {
-  if (auto *CE = dyn_cast<CastExpr>(E))
-    E = CE->getSubExprAsWritten();
-  QualType Ty = E->getType();
-  SourceLocation Loc = E->getExprLoc();
-
-  emitAlignmentAssumption(PtrValue, Ty, Loc, AssumptionLoc, Alignment,
-                          OffsetValue);
-}
-
-llvm::Value *CodeGenFunction::EmitAnnotationCall(llvm::Function *AnnotationFn,
-                                                 llvm::Value *AnnotatedVal,
-                                                 StringRef AnnotationStr,
-                                                 SourceLocation Location,
-                                                 const AnnotateAttr *Attr) {
-  SmallVector<llvm::Value *, 5> Args = {
-      AnnotatedVal,
-      Builder.CreateBitCast(CGM.EmitAnnotationString(AnnotationStr), Int8PtrTy),
-      Builder.CreateBitCast(CGM.EmitAnnotationUnit(Location), Int8PtrTy),
-      CGM.EmitAnnotationLineNo(Location),
-  };
-  if (Attr)
-    Args.push_back(CGM.EmitAnnotationArgs(Attr));
-  return Builder.CreateCall(AnnotationFn, Args);
-}
-
-void CodeGenFunction::EmitVarAnnotations(const VarDecl *D, llvm::Value *V) {
-  assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute");
-  // FIXME We create a new bitcast for every annotation because that's what
-  // llvm-gcc was doing.
-  for (const auto *I : D->specific_attrs<AnnotateAttr>())
-    EmitAnnotationCall(CGM.getIntrinsic(llvm::Intrinsic::var_annotation),
-                       Builder.CreateBitCast(V, CGM.Int8PtrTy, V->getName()),
-                       I->getAnnotation(), D->getLocation(), I);
-}
-
-Address CodeGenFunction::EmitFieldAnnotations(const FieldDecl *D,
-                                              Address Addr) {
-  assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute");
-  llvm::Value *V = Addr.getPointer();
-  llvm::Type *VTy = V->getType();
-  auto *PTy = dyn_cast<llvm::PointerType>(VTy);
-  unsigned AS = PTy ? PTy->getAddressSpace() : 0;
-  llvm::PointerType *IntrinTy =
-      llvm::PointerType::getWithSamePointeeType(CGM.Int8PtrTy, AS);
-  llvm::Function *F =
-      CGM.getIntrinsic(llvm::Intrinsic::ptr_annotation, IntrinTy);
-
-  for (const auto *I : D->specific_attrs<AnnotateAttr>()) {
-    // FIXME Always emit the cast inst so we can differentiate between
-    // annotation on the first field of a struct and annotation on the struct
-    // itself.
-    if (VTy != IntrinTy)
-      V = Builder.CreateBitCast(V, IntrinTy);
-    V = EmitAnnotationCall(F, V, I->getAnnotation(), D->getLocation(), I);
-    V = Builder.CreateBitCast(V, VTy);
-  }
-
-  return Address(V, Addr.getAlignment());
-}
-
-CodeGenFunction::CGCapturedStmtInfo::~CGCapturedStmtInfo() { }
-
-CodeGenFunction::SanitizerScope::SanitizerScope(CodeGenFunction *CGF)
-    : CGF(CGF) {
-  assert(!CGF->IsSanitizerScope);
-  CGF->IsSanitizerScope = true;
-}
-
-CodeGenFunction::SanitizerScope::~SanitizerScope() {
-  CGF->IsSanitizerScope = false;
-}
-
-void CodeGenFunction::InsertHelper(llvm::Instruction *I,
-                                   const llvm::Twine &Name,
-                                   llvm::BasicBlock *BB,
-                                   llvm::BasicBlock::iterator InsertPt) const {
-  LoopStack.InsertHelper(I);
-  if (IsSanitizerScope)
-    CGM.getSanitizerMetadata()->disableSanitizerForInstruction(I);
-}
-
-void CGBuilderInserter::InsertHelper(
-    llvm::Instruction *I, const llvm::Twine &Name, llvm::BasicBlock *BB,
-    llvm::BasicBlock::iterator InsertPt) const {
-  llvm::IRBuilderDefaultInserter::InsertHelper(I, Name, BB, InsertPt);
-  if (CGF)
-    CGF->InsertHelper(I, Name, BB, InsertPt);
-}
-
-// Emits an error if we don't have a valid set of target features for the
-// called function.
-void CodeGenFunction::checkTargetFeatures(const CallExpr *E,
-                                          const FunctionDecl *TargetDecl) {
-  return checkTargetFeatures(E->getBeginLoc(), TargetDecl);
-}
-
-// Emits an error if we don't have a valid set of target features for the
-// called function.
-void CodeGenFunction::checkTargetFeatures(SourceLocation Loc,
-                                          const FunctionDecl *TargetDecl) {
-  // Early exit if this is an indirect call.
-  if (!TargetDecl)
-    return;
-
-  // Get the current enclosing function if it exists. If it doesn't
-  // we can't check the target features anyhow.
-  const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(CurCodeDecl);
-  if (!FD)
-    return;
-
-  // Grab the required features for the call. For a builtin this is listed in
-  // the td file with the default cpu, for an always_inline function this is any
-  // listed cpu and any listed features.
-  unsigned BuiltinID = TargetDecl->getBuiltinID();
-  std::string MissingFeature;
-  llvm::StringMap<bool> CallerFeatureMap;
-  CGM.getContext().getFunctionFeatureMap(CallerFeatureMap, FD);
-  if (BuiltinID) {
-    StringRef FeatureList(
-        CGM.getContext().BuiltinInfo.getRequiredFeatures(BuiltinID));
-    // Return if the builtin doesn't have any required features.
-    if (FeatureList.empty())
-      return;
-    assert(!FeatureList.contains(' ') && "Space in feature list");
-    TargetFeatures TF(CallerFeatureMap);
-    if (!TF.hasRequiredFeatures(FeatureList))
-      CGM.getDiags().Report(Loc, diag::err_builtin_needs_feature)
-          << TargetDecl->getDeclName() << FeatureList;
-  } else if (!TargetDecl->isMultiVersion() &&
-             TargetDecl->hasAttr<TargetAttr>()) {
-    // Get the required features for the callee.
-
-    const TargetAttr *TD = TargetDecl->getAttr<TargetAttr>();
-    ParsedTargetAttr ParsedAttr =
-        CGM.getContext().filterFunctionTargetAttrs(TD);
-
-    SmallVector<StringRef, 1> ReqFeatures;
-    llvm::StringMap<bool> CalleeFeatureMap;
-    CGM.getContext().getFunctionFeatureMap(CalleeFeatureMap, TargetDecl);
-
-    for (const auto &F : ParsedAttr.Features) {
-      if (F[0] == '+' && CalleeFeatureMap.lookup(F.substr(1)))
-        ReqFeatures.push_back(StringRef(F).substr(1));
-    }
-
-    for (const auto &F : CalleeFeatureMap) {
-      // Only positive features are "required".
-      if (F.getValue())
-        ReqFeatures.push_back(F.getKey());
-    }
-    if (!llvm::all_of(ReqFeatures, [&](StringRef Feature) {
-      if (!CallerFeatureMap.lookup(Feature)) {
-        MissingFeature = Feature.str();
-        return false;
-      }
-      return true;
-    }))
-      CGM.getDiags().Report(Loc, diag::err_function_needs_feature)
-          << FD->getDeclName() << TargetDecl->getDeclName() << MissingFeature;
-  }
-}
-
-void CodeGenFunction::EmitSanitizerStatReport(llvm::SanitizerStatKind SSK) {
-  if (!CGM.getCodeGenOpts().SanitizeStats)
-    return;
-
-  llvm::IRBuilder<> IRB(Builder.GetInsertBlock(), Builder.GetInsertPoint());
-  IRB.SetCurrentDebugLocation(Builder.getCurrentDebugLocation());
-  CGM.getSanStats().create(IRB, SSK);
-}
-
-llvm::Value *
-CodeGenFunction::FormResolverCondition(const MultiVersionResolverOption &RO) {
-  llvm::Value *Condition = nullptr;
-
-  if (!RO.Conditions.Architecture.empty())
-    Condition = EmitX86CpuIs(RO.Conditions.Architecture);
-
-  if (!RO.Conditions.Features.empty()) {
-    llvm::Value *FeatureCond = EmitX86CpuSupports(RO.Conditions.Features);
-    Condition =
-        Condition ? Builder.CreateAnd(Condition, FeatureCond) : FeatureCond;
-  }
-  return Condition;
-}
-
-static void CreateMultiVersionResolverReturn(CodeGenModule &CGM,
-                                             llvm::Function *Resolver,
-                                             CGBuilderTy &Builder,
-                                             llvm::Function *FuncToReturn,
-                                             bool SupportsIFunc) {
-  if (SupportsIFunc) {
-    Builder.CreateRet(FuncToReturn);
-    return;
-  }
-
-  llvm::SmallVector<llvm::Value *, 10> Args;
-  llvm::for_each(Resolver->args(),
-                 [&](llvm::Argument &Arg) { Args.push_back(&Arg); });
-
-  llvm::CallInst *Result = Builder.CreateCall(FuncToReturn, Args);
-  Result->setTailCallKind(llvm::CallInst::TCK_MustTail);
-
-  if (Resolver->getReturnType()->isVoidTy())
-    Builder.CreateRetVoid();
-  else
-    Builder.CreateRet(Result);
-}
-
-void CodeGenFunction::EmitMultiVersionResolver(
-    llvm::Function *Resolver, ArrayRef<MultiVersionResolverOption> Options) {
-  assert(getContext().getTargetInfo().getTriple().isX86() &&
-         "Only implemented for x86 targets");
-
-  bool SupportsIFunc = getContext().getTargetInfo().supportsIFunc();
-
-  // Main function's basic block.
-  llvm::BasicBlock *CurBlock = createBasicBlock("resolver_entry", Resolver);
-  Builder.SetInsertPoint(CurBlock);
-  EmitX86CpuInit();
-
-  for (const MultiVersionResolverOption &RO : Options) {
-    Builder.SetInsertPoint(CurBlock);
-    llvm::Value *Condition = FormResolverCondition(RO);
-
-    // The 'default' or 'generic' case.
-    if (!Condition) {
-      assert(&RO == Options.end() - 1 &&
-             "Default or Generic case must be last");
-      CreateMultiVersionResolverReturn(CGM, Resolver, Builder, RO.Function,
-                                       SupportsIFunc);
-      return;
-    }
-
-    llvm::BasicBlock *RetBlock = createBasicBlock("resolver_return", Resolver);
-    CGBuilderTy RetBuilder(*this, RetBlock);
-    CreateMultiVersionResolverReturn(CGM, Resolver, RetBuilder, RO.Function,
-                                     SupportsIFunc);
-    CurBlock = createBasicBlock("resolver_else", Resolver);
-    Builder.CreateCondBr(Condition, RetBlock, CurBlock);
-  }
-
-  // If no generic/default, emit an unreachable.
-  Builder.SetInsertPoint(CurBlock);
-  llvm::CallInst *TrapCall = EmitTrapCall(llvm::Intrinsic::trap);
-  TrapCall->setDoesNotReturn();
-  TrapCall->setDoesNotThrow();
-  Builder.CreateUnreachable();
-  Builder.ClearInsertionPoint();
-}
-
-// Loc - where the diagnostic will point, where in the source code this
-//  alignment has failed.
-// SecondaryLoc - if present (will be present if sufficiently different from
-//  Loc), the diagnostic will additionally point a "Note:" to this location.
-//  It should be the location where the __attribute__((assume_aligned))
-//  was written e.g.
-void CodeGenFunction::emitAlignmentAssumptionCheck(
-    llvm::Value *Ptr, QualType Ty, SourceLocation Loc,
-    SourceLocation SecondaryLoc, llvm::Value *Alignment,
-    llvm::Value *OffsetValue, llvm::Value *TheCheck,
-    llvm::Instruction *Assumption) {
-  assert(Assumption && isa<llvm::CallInst>(Assumption) &&
-         cast<llvm::CallInst>(Assumption)->getCalledOperand() ==
-             llvm::Intrinsic::getDeclaration(
-                 Builder.GetInsertBlock()->getParent()->getParent(),
-                 llvm::Intrinsic::assume) &&
-         "Assumption should be a call to llvm.assume().");
-  assert(&(Builder.GetInsertBlock()->back()) == Assumption &&
-         "Assumption should be the last instruction of the basic block, "
-         "since the basic block is still being generated.");
-
-  if (!SanOpts.has(SanitizerKind::Alignment))
-    return;
-
-  // Don't check pointers to volatile data. The behavior here is implementation-
-  // defined.
-  if (!Ty->getPointeeType().isNull() && Ty->getPointeeType().isVolatileQualified())
-    return;
-
-  // We need to temorairly remove the assumption so we can insert the
-  // sanitizer check before it, else the check will be dropped by optimizations.
-  Assumption->removeFromParent();
-
-  {
-    SanitizerScope SanScope(this);
-
-    if (!OffsetValue)
-      OffsetValue = Builder.getInt1(false); // no offset.
-
-    llvm::Constant *StaticData[] = {EmitCheckSourceLocation(Loc),
-                                    EmitCheckSourceLocation(SecondaryLoc),
-                                    EmitCheckTypeDescriptor(Ty)};
-    llvm::Value *DynamicData[] = {EmitCheckValue(Ptr),
-                                  EmitCheckValue(Alignment),
-                                  EmitCheckValue(OffsetValue)};
-    EmitCheck({std::make_pair(TheCheck, SanitizerKind::Alignment)},
-              SanitizerHandler::AlignmentAssumption, StaticData, DynamicData);
-  }
-
-  // We are now in the (new, empty) "cont" basic block.
-  // Reintroduce the assumption.
-  Builder.Insert(Assumption);
-  // FIXME: Assumption still has it's original basic block as it's Parent.
-}
-
-llvm::DebugLoc CodeGenFunction::SourceLocToDebugLoc(SourceLocation Location) {
-  if (CGDebugInfo *DI = getDebugInfo())
-    return DI->SourceLocToDebugLoc(Location);
-
-  return llvm::DebugLoc();
-}
-
-llvm::Value *
-CodeGenFunction::emitCondLikelihoodViaExpectIntrinsic(llvm::Value *Cond,
-                                                      Stmt::Likelihood LH) {
-  switch (LH) {
-  case Stmt::LH_None:
-    return Cond;
-  case Stmt::LH_Likely:
-  case Stmt::LH_Unlikely:
-    // Don't generate llvm.expect on -O0 as the backend won't use it for
-    // anything.
-    if (CGM.getCodeGenOpts().OptimizationLevel == 0)
-      return Cond;
-    llvm::Type *CondTy = Cond->getType();
-    assert(CondTy->isIntegerTy(1) && "expecting condition to be a boolean");
-    llvm::Function *FnExpect =
-        CGM.getIntrinsic(llvm::Intrinsic::expect, CondTy);
-    llvm::Value *ExpectedValueOfCond =
-        llvm::ConstantInt::getBool(CondTy, LH == Stmt::LH_Likely);
-    return Builder.CreateCall(FnExpect, {Cond, ExpectedValueOfCond},
-                              Cond->getName() + ".expval");
-  }
-  llvm_unreachable("Unknown Likelihood");
-}