Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 4942 deletions

diff --git a/gnu/llvm/tools/clang/lib/CodeGen/CGExpr.cpp b/gnu/llvm/tools/clang/lib/CodeGen/CGExpr.cpp
deleted file mode 100644
index 34a921e2dc0..00000000000
--- a/gnu/llvm/tools/clang/lib/CodeGen/CGExpr.cpp
+++ /dev/null
@@ -1,4942 +0,0 @@
-//===--- CGExpr.cpp - Emit LLVM Code from Expressions ---------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This contains code to emit Expr nodes as LLVM code.
-//
-//===----------------------------------------------------------------------===//
-
-#include "CGCXXABI.h"
-#include "CGCall.h"
-#include "CGCleanup.h"
-#include "CGDebugInfo.h"
-#include "CGObjCRuntime.h"
-#include "CGOpenMPRuntime.h"
-#include "CGRecordLayout.h"
-#include "CodeGenFunction.h"
-#include "CodeGenModule.h"
-#include "ConstantEmitter.h"
-#include "TargetInfo.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/Attr.h"
-#include "clang/AST/DeclObjC.h"
-#include "clang/AST/NSAPI.h"
-#include "clang/Basic/CodeGenOptions.h"
-#include "llvm/ADT/Hashing.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/Intrinsics.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/MDBuilder.h"
-#include "llvm/Support/ConvertUTF.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Transforms/Utils/SanitizerStats.h"
-
-#include <string>
-
-using namespace clang;
-using namespace CodeGen;
-
-//===--------------------------------------------------------------------===//
-//                        Miscellaneous Helper Methods
-//===--------------------------------------------------------------------===//
-
-llvm::Value *CodeGenFunction::EmitCastToVoidPtr(llvm::Value *value) {
-  unsigned addressSpace =
-      cast<llvm::PointerType>(value->getType())->getAddressSpace();
-
-  llvm::PointerType *destType = Int8PtrTy;
-  if (addressSpace)
-    destType = llvm::Type::getInt8PtrTy(getLLVMContext(), addressSpace);
-
-  if (value->getType() == destType) return value;
-  return Builder.CreateBitCast(value, destType);
-}
-
-/// CreateTempAlloca - This creates a alloca and inserts it into the entry
-/// block.
-Address CodeGenFunction::CreateTempAllocaWithoutCast(llvm::Type *Ty,
-                                                     CharUnits Align,
-                                                     const Twine &Name,
-                                                     llvm::Value *ArraySize) {
-  auto Alloca = CreateTempAlloca(Ty, Name, ArraySize);
-  Alloca->setAlignment(Align.getQuantity());
-  return Address(Alloca, Align);
-}
-
-/// CreateTempAlloca - This creates a alloca and inserts it into the entry
-/// block. The alloca is casted to default address space if necessary.
-Address CodeGenFunction::CreateTempAlloca(llvm::Type *Ty, CharUnits Align,
-                                          const Twine &Name,
-                                          llvm::Value *ArraySize,
-                                          Address *AllocaAddr) {
-  auto Alloca = CreateTempAllocaWithoutCast(Ty, Align, Name, ArraySize);
-  if (AllocaAddr)
-    *AllocaAddr = Alloca;
-  llvm::Value *V = Alloca.getPointer();
-  // Alloca always returns a pointer in alloca address space, which may
-  // be different from the type defined by the language. For example,
-  // in C++ the auto variables are in the default address space. Therefore
-  // cast alloca to the default address space when necessary.
-  if (getASTAllocaAddressSpace() != LangAS::Default) {
-    auto DestAddrSpace = getContext().getTargetAddressSpace(LangAS::Default);
-    llvm::IRBuilderBase::InsertPointGuard IPG(Builder);
-    // When ArraySize is nullptr, alloca is inserted at AllocaInsertPt,
-    // otherwise alloca is inserted at the current insertion point of the
-    // builder.
-    if (!ArraySize)
-      Builder.SetInsertPoint(AllocaInsertPt);
-    V = getTargetHooks().performAddrSpaceCast(
-        *this, V, getASTAllocaAddressSpace(), LangAS::Default,
-        Ty->getPointerTo(DestAddrSpace), /*non-null*/ true);
-  }
-
-  return Address(V, Align);
-}
-
-/// CreateTempAlloca - This creates an alloca and inserts it into the entry
-/// block if \p ArraySize is nullptr, otherwise inserts it at the current
-/// insertion point of the builder.
-llvm::AllocaInst *CodeGenFunction::CreateTempAlloca(llvm::Type *Ty,
-                                                    const Twine &Name,
-                                                    llvm::Value *ArraySize) {
-  if (ArraySize)
-    return Builder.CreateAlloca(Ty, ArraySize, Name);
-  return new llvm::AllocaInst(Ty, CGM.getDataLayout().getAllocaAddrSpace(),
-                              ArraySize, Name, AllocaInsertPt);
-}
-
-/// CreateDefaultAlignTempAlloca - This creates an alloca with the
-/// default alignment of the corresponding LLVM type, which is *not*
-/// guaranteed to be related in any way to the expected alignment of
-/// an AST type that might have been lowered to Ty.
-Address CodeGenFunction::CreateDefaultAlignTempAlloca(llvm::Type *Ty,
-                                                      const Twine &Name) {
-  CharUnits Align =
-    CharUnits::fromQuantity(CGM.getDataLayout().getABITypeAlignment(Ty));
-  return CreateTempAlloca(Ty, Align, Name);
-}
-
-void CodeGenFunction::InitTempAlloca(Address Var, llvm::Value *Init) {
-  assert(isa<llvm::AllocaInst>(Var.getPointer()));
-  auto *Store = new llvm::StoreInst(Init, Var.getPointer());
-  Store->setAlignment(Var.getAlignment().getQuantity());
-  llvm::BasicBlock *Block = AllocaInsertPt->getParent();
-  Block->getInstList().insertAfter(AllocaInsertPt->getIterator(), Store);
-}
-
-Address CodeGenFunction::CreateIRTemp(QualType Ty, const Twine &Name) {
-  CharUnits Align = getContext().getTypeAlignInChars(Ty);
-  return CreateTempAlloca(ConvertType(Ty), Align, Name);
-}
-
-Address CodeGenFunction::CreateMemTemp(QualType Ty, const Twine &Name,
-                                       Address *Alloca) {
-  // FIXME: Should we prefer the preferred type alignment here?
-  return CreateMemTemp(Ty, getContext().getTypeAlignInChars(Ty), Name, Alloca);
-}
-
-Address CodeGenFunction::CreateMemTemp(QualType Ty, CharUnits Align,
-                                       const Twine &Name, Address *Alloca) {
-  return CreateTempAlloca(ConvertTypeForMem(Ty), Align, Name,
-                          /*ArraySize=*/nullptr, Alloca);
-}
-
-Address CodeGenFunction::CreateMemTempWithoutCast(QualType Ty, CharUnits Align,
-                                                  const Twine &Name) {
-  return CreateTempAllocaWithoutCast(ConvertTypeForMem(Ty), Align, Name);
-}
-
-Address CodeGenFunction::CreateMemTempWithoutCast(QualType Ty,
-                                                  const Twine &Name) {
-  return CreateMemTempWithoutCast(Ty, getContext().getTypeAlignInChars(Ty),
-                                  Name);
-}
-
-/// EvaluateExprAsBool - Perform the usual unary conversions on the specified
-/// expression and compare the result against zero, returning an Int1Ty value.
-llvm::Value *CodeGenFunction::EvaluateExprAsBool(const Expr *E) {
-  PGO.setCurrentStmt(E);
-  if (const MemberPointerType *MPT = E->getType()->getAs<MemberPointerType>()) {
-    llvm::Value *MemPtr = EmitScalarExpr(E);
-    return CGM.getCXXABI().EmitMemberPointerIsNotNull(*this, MemPtr, MPT);
-  }
-
-  QualType BoolTy = getContext().BoolTy;
-  SourceLocation Loc = E->getExprLoc();
-  if (!E->getType()->isAnyComplexType())
-    return EmitScalarConversion(EmitScalarExpr(E), E->getType(), BoolTy, Loc);
-
-  return EmitComplexToScalarConversion(EmitComplexExpr(E), E->getType(), BoolTy,
-                                       Loc);
-}
-
-/// EmitIgnoredExpr - Emit code to compute the specified expression,
-/// ignoring the result.
-void CodeGenFunction::EmitIgnoredExpr(const Expr *E) {
-  if (E->isRValue())
-    return (void) EmitAnyExpr(E, AggValueSlot::ignored(), true);
-
-  // Just emit it as an l-value and drop the result.
-  EmitLValue(E);
-}
-
-/// EmitAnyExpr - Emit code to compute the specified expression which
-/// can have any type.  The result is returned as an RValue struct.
-/// If this is an aggregate expression, AggSlot indicates where the
-/// result should be returned.
-RValue CodeGenFunction::EmitAnyExpr(const Expr *E,
-                                    AggValueSlot aggSlot,
-                                    bool ignoreResult) {
-  switch (getEvaluationKind(E->getType())) {
-  case TEK_Scalar:
-    return RValue::get(EmitScalarExpr(E, ignoreResult));
-  case TEK_Complex:
-    return RValue::getComplex(EmitComplexExpr(E, ignoreResult, ignoreResult));
-  case TEK_Aggregate:
-    if (!ignoreResult && aggSlot.isIgnored())
-      aggSlot = CreateAggTemp(E->getType(), "agg-temp");
-    EmitAggExpr(E, aggSlot);
-    return aggSlot.asRValue();
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-/// EmitAnyExprToTemp - Similar to EmitAnyExpr(), however, the result will
-/// always be accessible even if no aggregate location is provided.
-RValue CodeGenFunction::EmitAnyExprToTemp(const Expr *E) {
-  AggValueSlot AggSlot = AggValueSlot::ignored();
-
-  if (hasAggregateEvaluationKind(E->getType()))
-    AggSlot = CreateAggTemp(E->getType(), "agg.tmp");
-  return EmitAnyExpr(E, AggSlot);
-}
-
-/// EmitAnyExprToMem - Evaluate an expression into a given memory
-/// location.
-void CodeGenFunction::EmitAnyExprToMem(const Expr *E,
-                                       Address Location,
-                                       Qualifiers Quals,
-                                       bool IsInit) {
-  // FIXME: This function should take an LValue as an argument.
-  switch (getEvaluationKind(E->getType())) {
-  case TEK_Complex:
-    EmitComplexExprIntoLValue(E, MakeAddrLValue(Location, E->getType()),
-                              /*isInit*/ false);
-    return;
-
-  case TEK_Aggregate: {
-    EmitAggExpr(E, AggValueSlot::forAddr(Location, Quals,
-                                         AggValueSlot::IsDestructed_t(IsInit),
-                                         AggValueSlot::DoesNotNeedGCBarriers,
-                                         AggValueSlot::IsAliased_t(!IsInit),
-                                         AggValueSlot::MayOverlap));
-    return;
-  }
-
-  case TEK_Scalar: {
-    RValue RV = RValue::get(EmitScalarExpr(E, /*Ignore*/ false));
-    LValue LV = MakeAddrLValue(Location, E->getType());
-    EmitStoreThroughLValue(RV, LV);
-    return;
-  }
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-static void
-pushTemporaryCleanup(CodeGenFunction &CGF, const MaterializeTemporaryExpr *M,
-                     const Expr *E, Address ReferenceTemporary) {
-  // Objective-C++ ARC:
-  //   If we are binding a reference to a temporary that has ownership, we
-  //   need to perform retain/release operations on the temporary.
-  //
-  // FIXME: This should be looking at E, not M.
-  if (auto Lifetime = M->getType().getObjCLifetime()) {
-    switch (Lifetime) {
-    case Qualifiers::OCL_None:
-    case Qualifiers::OCL_ExplicitNone:
-      // Carry on to normal cleanup handling.
-      break;
-
-    case Qualifiers::OCL_Autoreleasing:
-      // Nothing to do; cleaned up by an autorelease pool.
-      return;
-
-    case Qualifiers::OCL_Strong:
-    case Qualifiers::OCL_Weak:
-      switch (StorageDuration Duration = M->getStorageDuration()) {
-      case SD_Static:
-        // Note: we intentionally do not register a cleanup to release
-        // the object on program termination.
-        return;
-
-      case SD_Thread:
-        // FIXME: We should probably register a cleanup in this case.
-        return;
-
-      case SD_Automatic:
-      case SD_FullExpression:
-        CodeGenFunction::Destroyer *Destroy;
-        CleanupKind CleanupKind;
-        if (Lifetime == Qualifiers::OCL_Strong) {
-          const ValueDecl *VD = M->getExtendingDecl();
-          bool Precise =
-              VD && isa<VarDecl>(VD) && VD->hasAttr<ObjCPreciseLifetimeAttr>();
-          CleanupKind = CGF.getARCCleanupKind();
-          Destroy = Precise ? &CodeGenFunction::destroyARCStrongPrecise
-                            : &CodeGenFunction::destroyARCStrongImprecise;
-        } else {
-          // __weak objects always get EH cleanups; otherwise, exceptions
-          // could cause really nasty crashes instead of mere leaks.
-          CleanupKind = NormalAndEHCleanup;
-          Destroy = &CodeGenFunction::destroyARCWeak;
-        }
-        if (Duration == SD_FullExpression)
-          CGF.pushDestroy(CleanupKind, ReferenceTemporary,
-                          M->getType(), *Destroy,
-                          CleanupKind & EHCleanup);
-        else
-          CGF.pushLifetimeExtendedDestroy(CleanupKind, ReferenceTemporary,
-                                          M->getType(),
-                                          *Destroy, CleanupKind & EHCleanup);
-        return;
-
-      case SD_Dynamic:
-        llvm_unreachable("temporary cannot have dynamic storage duration");
-      }
-      llvm_unreachable("unknown storage duration");
-    }
-  }
-
-  CXXDestructorDecl *ReferenceTemporaryDtor = nullptr;
-  if (const RecordType *RT =
-          E->getType()->getBaseElementTypeUnsafe()->getAs<RecordType>()) {
-    // Get the destructor for the reference temporary.
-    auto *ClassDecl = cast<CXXRecordDecl>(RT->getDecl());
-    if (!ClassDecl->hasTrivialDestructor())
-      ReferenceTemporaryDtor = ClassDecl->getDestructor();
-  }
-
-  if (!ReferenceTemporaryDtor)
-    return;
-
-  // Call the destructor for the temporary.
-  switch (M->getStorageDuration()) {
-  case SD_Static:
-  case SD_Thread: {
-    llvm::Constant *CleanupFn;
-    llvm::Constant *CleanupArg;
-    if (E->getType()->isArrayType()) {
-      CleanupFn = CodeGenFunction(CGF.CGM).generateDestroyHelper(
-          ReferenceTemporary, E->getType(),
-          CodeGenFunction::destroyCXXObject, CGF.getLangOpts().Exceptions,
-          dyn_cast_or_null<VarDecl>(M->getExtendingDecl()));
-      CleanupArg = llvm::Constant::getNullValue(CGF.Int8PtrTy);
-    } else {
-      CleanupFn = CGF.CGM.getAddrOfCXXStructor(ReferenceTemporaryDtor,
-                                               StructorType::Complete);
-      CleanupArg = cast<llvm::Constant>(ReferenceTemporary.getPointer());
-    }
-    CGF.CGM.getCXXABI().registerGlobalDtor(
-        CGF, *cast<VarDecl>(M->getExtendingDecl()), CleanupFn, CleanupArg);
-    break;
-  }
-
-  case SD_FullExpression:
-    CGF.pushDestroy(NormalAndEHCleanup, ReferenceTemporary, E->getType(),
-                    CodeGenFunction::destroyCXXObject,
-                    CGF.getLangOpts().Exceptions);
-    break;
-
-  case SD_Automatic:
-    CGF.pushLifetimeExtendedDestroy(NormalAndEHCleanup,
-                                    ReferenceTemporary, E->getType(),
-                                    CodeGenFunction::destroyCXXObject,
-                                    CGF.getLangOpts().Exceptions);
-    break;
-
-  case SD_Dynamic:
-    llvm_unreachable("temporary cannot have dynamic storage duration");
-  }
-}
-
-static Address createReferenceTemporary(CodeGenFunction &CGF,
-                                        const MaterializeTemporaryExpr *M,
-                                        const Expr *Inner,
-                                        Address *Alloca = nullptr) {
-  auto &TCG = CGF.getTargetHooks();
-  switch (M->getStorageDuration()) {
-  case SD_FullExpression:
-  case SD_Automatic: {
-    // If we have a constant temporary array or record try to promote it into a
-    // constant global under the same rules a normal constant would've been
-    // promoted. This is easier on the optimizer and generally emits fewer
-    // instructions.
-    QualType Ty = Inner->getType();
-    if (CGF.CGM.getCodeGenOpts().MergeAllConstants &&
-        (Ty->isArrayType() || Ty->isRecordType()) &&
-        CGF.CGM.isTypeConstant(Ty, true))
-      if (auto Init = ConstantEmitter(CGF).tryEmitAbstract(Inner, Ty)) {
-        if (auto AddrSpace = CGF.getTarget().getConstantAddressSpace()) {
-          auto AS = AddrSpace.getValue();
-          auto *GV = new llvm::GlobalVariable(
-              CGF.CGM.getModule(), Init->getType(), /*isConstant=*/true,
-              llvm::GlobalValue::PrivateLinkage, Init, ".ref.tmp", nullptr,
-              llvm::GlobalValue::NotThreadLocal,
-              CGF.getContext().getTargetAddressSpace(AS));
-          CharUnits alignment = CGF.getContext().getTypeAlignInChars(Ty);
-          GV->setAlignment(alignment.getQuantity());
-          llvm::Constant *C = GV;
-          if (AS != LangAS::Default)
-            C = TCG.performAddrSpaceCast(
-                CGF.CGM, GV, AS, LangAS::Default,
-                GV->getValueType()->getPointerTo(
-                    CGF.getContext().getTargetAddressSpace(LangAS::Default)));
-          // FIXME: Should we put the new global into a COMDAT?
-          return Address(C, alignment);
-        }
-      }
-    return CGF.CreateMemTemp(Ty, "ref.tmp", Alloca);
-  }
-  case SD_Thread:
-  case SD_Static:
-    return CGF.CGM.GetAddrOfGlobalTemporary(M, Inner);
-
-  case SD_Dynamic:
-    llvm_unreachable("temporary can't have dynamic storage duration");
-  }
-  llvm_unreachable("unknown storage duration");
-}
-
-LValue CodeGenFunction::
-EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *M) {
-  const Expr *E = M->GetTemporaryExpr();
-
-  assert((!M->getExtendingDecl() || !isa<VarDecl>(M->getExtendingDecl()) ||
-          !cast<VarDecl>(M->getExtendingDecl())->isARCPseudoStrong()) &&
-         "Reference should never be pseudo-strong!");
-
-  // FIXME: ideally this would use EmitAnyExprToMem, however, we cannot do so
-  // as that will cause the lifetime adjustment to be lost for ARC
-  auto ownership = M->getType().getObjCLifetime();
-  if (ownership != Qualifiers::OCL_None &&
-      ownership != Qualifiers::OCL_ExplicitNone) {
-    Address Object = createReferenceTemporary(*this, M, E);
-    if (auto *Var = dyn_cast<llvm::GlobalVariable>(Object.getPointer())) {
-      Object = Address(llvm::ConstantExpr::getBitCast(Var,
-                           ConvertTypeForMem(E->getType())
-                             ->getPointerTo(Object.getAddressSpace())),
-                       Object.getAlignment());
-
-      // createReferenceTemporary will promote the temporary to a global with a
-      // constant initializer if it can.  It can only do this to a value of
-      // ARC-manageable type if the value is global and therefore "immune" to
-      // ref-counting operations.  Therefore we have no need to emit either a
-      // dynamic initialization or a cleanup and we can just return the address
-      // of the temporary.
-      if (Var->hasInitializer())
-        return MakeAddrLValue(Object, M->getType(), AlignmentSource::Decl);
-
-      Var->setInitializer(CGM.EmitNullConstant(E->getType()));
-    }
-    LValue RefTempDst = MakeAddrLValue(Object, M->getType(),
-                                       AlignmentSource::Decl);
-
-    switch (getEvaluationKind(E->getType())) {
-    default: llvm_unreachable("expected scalar or aggregate expression");
-    case TEK_Scalar:
-      EmitScalarInit(E, M->getExtendingDecl(), RefTempDst, false);
-      break;
-    case TEK_Aggregate: {
-      EmitAggExpr(E, AggValueSlot::forAddr(Object,
-                                           E->getType().getQualifiers(),
-                                           AggValueSlot::IsDestructed,
-                                           AggValueSlot::DoesNotNeedGCBarriers,
-                                           AggValueSlot::IsNotAliased,
-                                           AggValueSlot::DoesNotOverlap));
-      break;
-    }
-    }
-
-    pushTemporaryCleanup(*this, M, E, Object);
-    return RefTempDst;
-  }
-
-  SmallVector<const Expr *, 2> CommaLHSs;
-  SmallVector<SubobjectAdjustment, 2> Adjustments;
-  E = E->skipRValueSubobjectAdjustments(CommaLHSs, Adjustments);
-
-  for (const auto &Ignored : CommaLHSs)
-    EmitIgnoredExpr(Ignored);
-
-  if (const auto *opaque = dyn_cast<OpaqueValueExpr>(E)) {
-    if (opaque->getType()->isRecordType()) {
-      assert(Adjustments.empty());
-      return EmitOpaqueValueLValue(opaque);
-    }
-  }
-
-  // Create and initialize the reference temporary.
-  Address Alloca = Address::invalid();
-  Address Object = createReferenceTemporary(*this, M, E, &Alloca);
-  if (auto *Var = dyn_cast<llvm::GlobalVariable>(
-          Object.getPointer()->stripPointerCasts())) {
-    Object = Address(llvm::ConstantExpr::getBitCast(
-                         cast<llvm::Constant>(Object.getPointer()),
-                         ConvertTypeForMem(E->getType())->getPointerTo()),
-                     Object.getAlignment());
-    // If the temporary is a global and has a constant initializer or is a
-    // constant temporary that we promoted to a global, we may have already
-    // initialized it.
-    if (!Var->hasInitializer()) {
-      Var->setInitializer(CGM.EmitNullConstant(E->getType()));
-      EmitAnyExprToMem(E, Object, Qualifiers(), /*IsInit*/true);
-    }
-  } else {
-    switch (M->getStorageDuration()) {
-    case SD_Automatic:
-      if (auto *Size = EmitLifetimeStart(
-              CGM.getDataLayout().getTypeAllocSize(Alloca.getElementType()),
-              Alloca.getPointer())) {
-        pushCleanupAfterFullExpr<CallLifetimeEnd>(NormalEHLifetimeMarker,
-                                                  Alloca, Size);
-      }
-      break;
-
-    case SD_FullExpression: {
-      if (!ShouldEmitLifetimeMarkers)
-        break;
-
-      // Avoid creating a conditional cleanup just to hold an llvm.lifetime.end
-      // marker. Instead, start the lifetime of a conditional temporary earlier
-      // so that it's unconditional. Don't do this in ASan's use-after-scope
-      // mode so that it gets the more precise lifetime marks. If the type has
-      // a non-trivial destructor, we'll have a cleanup block for it anyway,
-      // so this typically doesn't help; skip it in that case.
-      ConditionalEvaluation *OldConditional = nullptr;
-      CGBuilderTy::InsertPoint OldIP;
-      if (isInConditionalBranch() && !E->getType().isDestructedType() &&
-          !CGM.getCodeGenOpts().SanitizeAddressUseAfterScope) {
-        OldConditional = OutermostConditional;
-        OutermostConditional = nullptr;
-
-        OldIP = Builder.saveIP();
-        llvm::BasicBlock *Block = OldConditional->getStartingBlock();
-        Builder.restoreIP(CGBuilderTy::InsertPoint(
-            Block, llvm::BasicBlock::iterator(Block->back())));
-      }
-
-      if (auto *Size = EmitLifetimeStart(
-              CGM.getDataLayout().getTypeAllocSize(Alloca.getElementType()),
-              Alloca.getPointer())) {
-        pushFullExprCleanup<CallLifetimeEnd>(NormalEHLifetimeMarker, Alloca,
-                                             Size);
-      }
-
-      if (OldConditional) {
-        OutermostConditional = OldConditional;
-        Builder.restoreIP(OldIP);
-      }
-      break;
-    }
-
-    default:
-      break;
-    }
-    EmitAnyExprToMem(E, Object, Qualifiers(), /*IsInit*/true);
-  }
-  pushTemporaryCleanup(*this, M, E, Object);
-
-  // Perform derived-to-base casts and/or field accesses, to get from the
-  // temporary object we created (and, potentially, for which we extended
-  // the lifetime) to the subobject we're binding the reference to.
-  for (unsigned I = Adjustments.size(); I != 0; --I) {
-    SubobjectAdjustment &Adjustment = Adjustments[I-1];
-    switch (Adjustment.Kind) {
-    case SubobjectAdjustment::DerivedToBaseAdjustment:
-      Object =
-          GetAddressOfBaseClass(Object, Adjustment.DerivedToBase.DerivedClass,
-                                Adjustment.DerivedToBase.BasePath->path_begin(),
-                                Adjustment.DerivedToBase.BasePath->path_end(),
-                                /*NullCheckValue=*/ false, E->getExprLoc());
-      break;
-
-    case SubobjectAdjustment::FieldAdjustment: {
-      LValue LV = MakeAddrLValue(Object, E->getType(), AlignmentSource::Decl);
-      LV = EmitLValueForField(LV, Adjustment.Field);
-      assert(LV.isSimple() &&
-             "materialized temporary field is not a simple lvalue");
-      Object = LV.getAddress();
-      break;
-    }
-
-    case SubobjectAdjustment::MemberPointerAdjustment: {
-      llvm::Value *Ptr = EmitScalarExpr(Adjustment.Ptr.RHS);
-      Object = EmitCXXMemberDataPointerAddress(E, Object, Ptr,
-                                               Adjustment.Ptr.MPT);
-      break;
-    }
-    }
-  }
-
-  return MakeAddrLValue(Object, M->getType(), AlignmentSource::Decl);
-}
-
-RValue
-CodeGenFunction::EmitReferenceBindingToExpr(const Expr *E) {
-  // Emit the expression as an lvalue.
-  LValue LV = EmitLValue(E);
-  assert(LV.isSimple());
-  llvm::Value *Value = LV.getPointer();
-
-  if (sanitizePerformTypeCheck() && !E->getType()->isFunctionType()) {
-    // C++11 [dcl.ref]p5 (as amended by core issue 453):
-    //   If a glvalue to which a reference is directly bound designates neither
-    //   an existing object or function of an appropriate type nor a region of
-    //   storage of suitable size and alignment to contain an object of the
-    //   reference's type, the behavior is undefined.
-    QualType Ty = E->getType();
-    EmitTypeCheck(TCK_ReferenceBinding, E->getExprLoc(), Value, Ty);
-  }
-
-  return RValue::get(Value);
-}
-
-
-/// getAccessedFieldNo - Given an encoded value and a result number, return the
-/// input field number being accessed.
-unsigned CodeGenFunction::getAccessedFieldNo(unsigned Idx,
-                                             const llvm::Constant *Elts) {
-  return cast<llvm::ConstantInt>(Elts->getAggregateElement(Idx))
-      ->getZExtValue();
-}
-
-/// Emit the hash_16_bytes function from include/llvm/ADT/Hashing.h.
-static llvm::Value *emitHash16Bytes(CGBuilderTy &Builder, llvm::Value *Low,
-                                    llvm::Value *High) {
-  llvm::Value *KMul = Builder.getInt64(0x9ddfea08eb382d69ULL);
-  llvm::Value *K47 = Builder.getInt64(47);
-  llvm::Value *A0 = Builder.CreateMul(Builder.CreateXor(Low, High), KMul);
-  llvm::Value *A1 = Builder.CreateXor(Builder.CreateLShr(A0, K47), A0);
-  llvm::Value *B0 = Builder.CreateMul(Builder.CreateXor(High, A1), KMul);
-  llvm::Value *B1 = Builder.CreateXor(Builder.CreateLShr(B0, K47), B0);
-  return Builder.CreateMul(B1, KMul);
-}
-
-bool CodeGenFunction::isNullPointerAllowed(TypeCheckKind TCK) {
-  return TCK == TCK_DowncastPointer || TCK == TCK_Upcast ||
-         TCK == TCK_UpcastToVirtualBase || TCK == TCK_DynamicOperation;
-}
-
-bool CodeGenFunction::isVptrCheckRequired(TypeCheckKind TCK, QualType Ty) {
-  CXXRecordDecl *RD = Ty->getAsCXXRecordDecl();
-  return (RD && RD->hasDefinition() && RD->isDynamicClass()) &&
-         (TCK == TCK_MemberAccess || TCK == TCK_MemberCall ||
-          TCK == TCK_DowncastPointer || TCK == TCK_DowncastReference ||
-          TCK == TCK_UpcastToVirtualBase || TCK == TCK_DynamicOperation);
-}
-
-bool CodeGenFunction::sanitizePerformTypeCheck() const {
-  return SanOpts.has(SanitizerKind::Null) |
-         SanOpts.has(SanitizerKind::Alignment) |
-         SanOpts.has(SanitizerKind::ObjectSize) |
-         SanOpts.has(SanitizerKind::Vptr);
-}
-
-void CodeGenFunction::EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc,
-                                    llvm::Value *Ptr, QualType Ty,
-                                    CharUnits Alignment,
-                                    SanitizerSet SkippedChecks) {
-  if (!sanitizePerformTypeCheck())
-    return;
-
-  // Don't check pointers outside the default address space. The null check
-  // isn't correct, the object-size check isn't supported by LLVM, and we can't
-  // communicate the addresses to the runtime handler for the vptr check.
-  if (Ptr->getType()->getPointerAddressSpace())
-    return;
-
-  // Don't check pointers to volatile data. The behavior here is implementation-
-  // defined.
-  if (Ty.isVolatileQualified())
-    return;
-
-  SanitizerScope SanScope(this);
-
-  SmallVector<std::pair<llvm::Value *, SanitizerMask>, 3> Checks;
-  llvm::BasicBlock *Done = nullptr;
-
-  // Quickly determine whether we have a pointer to an alloca. It's possible
-  // to skip null checks, and some alignment checks, for these pointers. This
-  // can reduce compile-time significantly.
-  auto PtrToAlloca =
-      dyn_cast<llvm::AllocaInst>(Ptr->stripPointerCastsNoFollowAliases());
-
-  llvm::Value *True = llvm::ConstantInt::getTrue(getLLVMContext());
-  llvm::Value *IsNonNull = nullptr;
-  bool IsGuaranteedNonNull =
-      SkippedChecks.has(SanitizerKind::Null) || PtrToAlloca;
-  bool AllowNullPointers = isNullPointerAllowed(TCK);
-  if ((SanOpts.has(SanitizerKind::Null) || AllowNullPointers) &&
-      !IsGuaranteedNonNull) {
-    // The glvalue must not be an empty glvalue.
-    IsNonNull = Builder.CreateIsNotNull(Ptr);
-
-    // The IR builder can constant-fold the null check if the pointer points to
-    // a constant.
-    IsGuaranteedNonNull = IsNonNull == True;
-
-    // Skip the null check if the pointer is known to be non-null.
-    if (!IsGuaranteedNonNull) {
-      if (AllowNullPointers) {
-        // When performing pointer casts, it's OK if the value is null.
-        // Skip the remaining checks in that case.
-        Done = createBasicBlock("null");
-        llvm::BasicBlock *Rest = createBasicBlock("not.null");
-        Builder.CreateCondBr(IsNonNull, Rest, Done);
-        EmitBlock(Rest);
-      } else {
-        Checks.push_back(std::make_pair(IsNonNull, SanitizerKind::Null));
-      }
-    }
-  }
-
-  if (SanOpts.has(SanitizerKind::ObjectSize) &&
-      !SkippedChecks.has(SanitizerKind::ObjectSize) &&
-      !Ty->isIncompleteType()) {
-    uint64_t Size = getContext().getTypeSizeInChars(Ty).getQuantity();
-
-    // The glvalue must refer to a large enough storage region.
-    // FIXME: If Address Sanitizer is enabled, insert dynamic instrumentation
-    //        to check this.
-    // FIXME: Get object address space
-    llvm::Type *Tys[2] = { IntPtrTy, Int8PtrTy };
-    llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::objectsize, Tys);
-    llvm::Value *Min = Builder.getFalse();
-    llvm::Value *NullIsUnknown = Builder.getFalse();
-    llvm::Value *CastAddr = Builder.CreateBitCast(Ptr, Int8PtrTy);
-    llvm::Value *LargeEnough = Builder.CreateICmpUGE(
-        Builder.CreateCall(F, {CastAddr, Min, NullIsUnknown}),
-        llvm::ConstantInt::get(IntPtrTy, Size));
-    Checks.push_back(std::make_pair(LargeEnough, SanitizerKind::ObjectSize));
-  }
-
-  uint64_t AlignVal = 0;
-  llvm::Value *PtrAsInt = nullptr;
-
-  if (SanOpts.has(SanitizerKind::Alignment) &&
-      !SkippedChecks.has(SanitizerKind::Alignment)) {
-    AlignVal = Alignment.getQuantity();
-    if (!Ty->isIncompleteType() && !AlignVal)
-      AlignVal = getContext().getTypeAlignInChars(Ty).getQuantity();
-
-    // The glvalue must be suitably aligned.
-    if (AlignVal > 1 &&
-        (!PtrToAlloca || PtrToAlloca->getAlignment() < AlignVal)) {
-      PtrAsInt = Builder.CreatePtrToInt(Ptr, IntPtrTy);
-      llvm::Value *Align = Builder.CreateAnd(
-          PtrAsInt, llvm::ConstantInt::get(IntPtrTy, AlignVal - 1));
-      llvm::Value *Aligned =
-          Builder.CreateICmpEQ(Align, llvm::ConstantInt::get(IntPtrTy, 0));
-      if (Aligned != True)
-        Checks.push_back(std::make_pair(Aligned, SanitizerKind::Alignment));
-    }
-  }
-
-  if (Checks.size() > 0) {
-    // Make sure we're not losing information. Alignment needs to be a power of
-    // 2
-    assert(!AlignVal || (uint64_t)1 << llvm::Log2_64(AlignVal) == AlignVal);
-    llvm::Constant *StaticData[] = {
-        EmitCheckSourceLocation(Loc), EmitCheckTypeDescriptor(Ty),
-        llvm::ConstantInt::get(Int8Ty, AlignVal ? llvm::Log2_64(AlignVal) : 1),
-        llvm::ConstantInt::get(Int8Ty, TCK)};
-    EmitCheck(Checks, SanitizerHandler::TypeMismatch, StaticData,
-              PtrAsInt ? PtrAsInt : Ptr);
-  }
-
-  // If possible, check that the vptr indicates that there is a subobject of
-  // type Ty at offset zero within this object.
-  //
-  // C++11 [basic.life]p5,6:
-  //   [For storage which does not refer to an object within its lifetime]
-  //   The program has undefined behavior if:
-  //    -- the [pointer or glvalue] is used to access a non-static data member
-  //       or call a non-static member function
-  if (SanOpts.has(SanitizerKind::Vptr) &&
-      !SkippedChecks.has(SanitizerKind::Vptr) && isVptrCheckRequired(TCK, Ty)) {
-    // Ensure that the pointer is non-null before loading it. If there is no
-    // compile-time guarantee, reuse the run-time null check or emit a new one.
-    if (!IsGuaranteedNonNull) {
-      if (!IsNonNull)
-        IsNonNull = Builder.CreateIsNotNull(Ptr);
-      if (!Done)
-        Done = createBasicBlock("vptr.null");
-      llvm::BasicBlock *VptrNotNull = createBasicBlock("vptr.not.null");
-      Builder.CreateCondBr(IsNonNull, VptrNotNull, Done);
-      EmitBlock(VptrNotNull);
-    }
-
-    // Compute a hash of the mangled name of the type.
-    //
-    // FIXME: This is not guaranteed to be deterministic! Move to a
-    //        fingerprinting mechanism once LLVM provides one. For the time
-    //        being the implementation happens to be deterministic.
-    SmallString<64> MangledName;
-    llvm::raw_svector_ostream Out(MangledName);
-    CGM.getCXXABI().getMangleContext().mangleCXXRTTI(Ty.getUnqualifiedType(),
-                                                     Out);
-
-    // Blacklist based on the mangled type.
-    if (!CGM.getContext().getSanitizerBlacklist().isBlacklistedType(
-            SanitizerKind::Vptr, Out.str())) {
-      llvm::hash_code TypeHash = hash_value(Out.str());
-
-      // Load the vptr, and compute hash_16_bytes(TypeHash, vptr).
-      llvm::Value *Low = llvm::ConstantInt::get(Int64Ty, TypeHash);
-      llvm::Type *VPtrTy = llvm::PointerType::get(IntPtrTy, 0);
-      Address VPtrAddr(Builder.CreateBitCast(Ptr, VPtrTy), getPointerAlign());
-      llvm::Value *VPtrVal = Builder.CreateLoad(VPtrAddr);
-      llvm::Value *High = Builder.CreateZExt(VPtrVal, Int64Ty);
-
-      llvm::Value *Hash = emitHash16Bytes(Builder, Low, High);
-      Hash = Builder.CreateTrunc(Hash, IntPtrTy);
-
-      // Look the hash up in our cache.
-      const int CacheSize = 128;
-      llvm::Type *HashTable = llvm::ArrayType::get(IntPtrTy, CacheSize);
-      llvm::Value *Cache = CGM.CreateRuntimeVariable(HashTable,
-                                                     "__ubsan_vptr_type_cache");
-      llvm::Value *Slot = Builder.CreateAnd(Hash,
-                                            llvm::ConstantInt::get(IntPtrTy,
-                                                                   CacheSize-1));
-      llvm::Value *Indices[] = { Builder.getInt32(0), Slot };
-      llvm::Value *CacheVal =
-        Builder.CreateAlignedLoad(Builder.CreateInBoundsGEP(Cache, Indices),
-                                  getPointerAlign());
-
-      // If the hash isn't in the cache, call a runtime handler to perform the
-      // hard work of checking whether the vptr is for an object of the right
-      // type. This will either fill in the cache and return, or produce a
-      // diagnostic.
-      llvm::Value *EqualHash = Builder.CreateICmpEQ(CacheVal, Hash);
-      llvm::Constant *StaticData[] = {
-        EmitCheckSourceLocation(Loc),
-        EmitCheckTypeDescriptor(Ty),
-        CGM.GetAddrOfRTTIDescriptor(Ty.getUnqualifiedType()),
-        llvm::ConstantInt::get(Int8Ty, TCK)
-      };
-      llvm::Value *DynamicData[] = { Ptr, Hash };
-      EmitCheck(std::make_pair(EqualHash, SanitizerKind::Vptr),
-                SanitizerHandler::DynamicTypeCacheMiss, StaticData,
-                DynamicData);
-    }
-  }
-
-  if (Done) {
-    Builder.CreateBr(Done);
-    EmitBlock(Done);
-  }
-}
-
-/// Determine whether this expression refers to a flexible array member in a
-/// struct. We disable array bounds checks for such members.
-static bool isFlexibleArrayMemberExpr(const Expr *E) {
-  // For compatibility with existing code, we treat arrays of length 0 or
-  // 1 as flexible array members.
-  const ArrayType *AT = E->getType()->castAsArrayTypeUnsafe();
-  if (const auto *CAT = dyn_cast<ConstantArrayType>(AT)) {
-    if (CAT->getSize().ugt(1))
-      return false;
-  } else if (!isa<IncompleteArrayType>(AT))
-    return false;
-
-  E = E->IgnoreParens();
-
-  // A flexible array member must be the last member in the class.
-  if (const auto *ME = dyn_cast<MemberExpr>(E)) {
-    // FIXME: If the base type of the member expr is not FD->getParent(),
-    // this should not be treated as a flexible array member access.
-    if (const auto *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) {
-      RecordDecl::field_iterator FI(
-          DeclContext::decl_iterator(const_cast<FieldDecl *>(FD)));
-      return ++FI == FD->getParent()->field_end();
-    }
-  } else if (const auto *IRE = dyn_cast<ObjCIvarRefExpr>(E)) {
-    return IRE->getDecl()->getNextIvar() == nullptr;
-  }
-
-  return false;
-}
-
-llvm::Value *CodeGenFunction::LoadPassedObjectSize(const Expr *E,
-                                                   QualType EltTy) {
-  ASTContext &C = getContext();
-  uint64_t EltSize = C.getTypeSizeInChars(EltTy).getQuantity();
-  if (!EltSize)
-    return nullptr;
-
-  auto *ArrayDeclRef = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts());
-  if (!ArrayDeclRef)
-    return nullptr;
-
-  auto *ParamDecl = dyn_cast<ParmVarDecl>(ArrayDeclRef->getDecl());
-  if (!ParamDecl)
-    return nullptr;
-
-  auto *POSAttr = ParamDecl->getAttr<PassObjectSizeAttr>();
-  if (!POSAttr)
-    return nullptr;
-
-  // Don't load the size if it's a lower bound.
-  int POSType = POSAttr->getType();
-  if (POSType != 0 && POSType != 1)
-    return nullptr;
-
-  // Find the implicit size parameter.
-  auto PassedSizeIt = SizeArguments.find(ParamDecl);
-  if (PassedSizeIt == SizeArguments.end())
-    return nullptr;
-
-  const ImplicitParamDecl *PassedSizeDecl = PassedSizeIt->second;
-  assert(LocalDeclMap.count(PassedSizeDecl) && "Passed size not loadable");
-  Address AddrOfSize = LocalDeclMap.find(PassedSizeDecl)->second;
-  llvm::Value *SizeInBytes = EmitLoadOfScalar(AddrOfSize, /*Volatile=*/false,
-                                              C.getSizeType(), E->getExprLoc());
-  llvm::Value *SizeOfElement =
-      llvm::ConstantInt::get(SizeInBytes->getType(), EltSize);
-  return Builder.CreateUDiv(SizeInBytes, SizeOfElement);
-}
-
-/// If Base is known to point to the start of an array, return the length of
-/// that array. Return 0 if the length cannot be determined.
-static llvm::Value *getArrayIndexingBound(
-    CodeGenFunction &CGF, const Expr *Base, QualType &IndexedType) {
-  // For the vector indexing extension, the bound is the number of elements.
-  if (const VectorType *VT = Base->getType()->getAs<VectorType>()) {
-    IndexedType = Base->getType();
-    return CGF.Builder.getInt32(VT->getNumElements());
-  }
-
-  Base = Base->IgnoreParens();
-
-  if (const auto *CE = dyn_cast<CastExpr>(Base)) {
-    if (CE->getCastKind() == CK_ArrayToPointerDecay &&
-        !isFlexibleArrayMemberExpr(CE->getSubExpr())) {
-      IndexedType = CE->getSubExpr()->getType();
-      const ArrayType *AT = IndexedType->castAsArrayTypeUnsafe();
-      if (const auto *CAT = dyn_cast<ConstantArrayType>(AT))
-        return CGF.Builder.getInt(CAT->getSize());
-      else if (const auto *VAT = dyn_cast<VariableArrayType>(AT))
-        return CGF.getVLASize(VAT).NumElts;
-      // Ignore pass_object_size here. It's not applicable on decayed pointers.
-    }
-  }
-
-  QualType EltTy{Base->getType()->getPointeeOrArrayElementType(), 0};
-  if (llvm::Value *POS = CGF.LoadPassedObjectSize(Base, EltTy)) {
-    IndexedType = Base->getType();
-    return POS;
-  }
-
-  return nullptr;
-}
-
-void CodeGenFunction::EmitBoundsCheck(const Expr *E, const Expr *Base,
-                                      llvm::Value *Index, QualType IndexType,
-                                      bool Accessed) {
-  assert(SanOpts.has(SanitizerKind::ArrayBounds) &&
-         "should not be called unless adding bounds checks");
-  SanitizerScope SanScope(this);
-
-  QualType IndexedType;
-  llvm::Value *Bound = getArrayIndexingBound(*this, Base, IndexedType);
-  if (!Bound)
-    return;
-
-  bool IndexSigned = IndexType->isSignedIntegerOrEnumerationType();
-  llvm::Value *IndexVal = Builder.CreateIntCast(Index, SizeTy, IndexSigned);
-  llvm::Value *BoundVal = Builder.CreateIntCast(Bound, SizeTy, false);
-
-  llvm::Constant *StaticData[] = {
-    EmitCheckSourceLocation(E->getExprLoc()),
-    EmitCheckTypeDescriptor(IndexedType),
-    EmitCheckTypeDescriptor(IndexType)
-  };
-  llvm::Value *Check = Accessed ? Builder.CreateICmpULT(IndexVal, BoundVal)
-                                : Builder.CreateICmpULE(IndexVal, BoundVal);
-  EmitCheck(std::make_pair(Check, SanitizerKind::ArrayBounds),
-            SanitizerHandler::OutOfBounds, StaticData, Index);
-}
-
-
-CodeGenFunction::ComplexPairTy CodeGenFunction::
-EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV,
-                         bool isInc, bool isPre) {
-  ComplexPairTy InVal = EmitLoadOfComplex(LV, E->getExprLoc());
-
-  llvm::Value *NextVal;
-  if (isa<llvm::IntegerType>(InVal.first->getType())) {
-    uint64_t AmountVal = isInc ? 1 : -1;
-    NextVal = llvm::ConstantInt::get(InVal.first->getType(), AmountVal, true);
-
-    // Add the inc/dec to the real part.
-    NextVal = Builder.CreateAdd(InVal.first, NextVal, isInc ? "inc" : "dec");
-  } else {
-    QualType ElemTy = E->getType()->getAs<ComplexType>()->getElementType();
-    llvm::APFloat FVal(getContext().getFloatTypeSemantics(ElemTy), 1);
-    if (!isInc)
-      FVal.changeSign();
-    NextVal = llvm::ConstantFP::get(getLLVMContext(), FVal);
-
-    // Add the inc/dec to the real part.
-    NextVal = Builder.CreateFAdd(InVal.first, NextVal, isInc ? "inc" : "dec");
-  }
-
-  ComplexPairTy IncVal(NextVal, InVal.second);
-
-  // Store the updated result through the lvalue.
-  EmitStoreOfComplex(IncVal, LV, /*init*/ false);
-
-  // If this is a postinc, return the value read from memory, otherwise use the
-  // updated value.
-  return isPre ? IncVal : InVal;
-}
-
-void CodeGenModule::EmitExplicitCastExprType(const ExplicitCastExpr *E,
-                                             CodeGenFunction *CGF) {
-  // Bind VLAs in the cast type.
-  if (CGF && E->getType()->isVariablyModifiedType())
-    CGF->EmitVariablyModifiedType(E->getType());
-
-  if (CGDebugInfo *DI = getModuleDebugInfo())
-    DI->EmitExplicitCastType(E->getType());
-}
-
-//===----------------------------------------------------------------------===//
-//                         LValue Expression Emission
-//===----------------------------------------------------------------------===//
-
-/// EmitPointerWithAlignment - Given an expression of pointer type, try to
-/// derive a more accurate bound on the alignment of the pointer.
-Address CodeGenFunction::EmitPointerWithAlignment(const Expr *E,
-                                                  LValueBaseInfo *BaseInfo,
-                                                  TBAAAccessInfo *TBAAInfo) {
-  // We allow this with ObjC object pointers because of fragile ABIs.
-  assert(E->getType()->isPointerType() ||
-         E->getType()->isObjCObjectPointerType());
-  E = E->IgnoreParens();
-
-  // Casts:
-  if (const CastExpr *CE = dyn_cast<CastExpr>(E)) {
-    if (const auto *ECE = dyn_cast<ExplicitCastExpr>(CE))
-      CGM.EmitExplicitCastExprType(ECE, this);
-
-    switch (CE->getCastKind()) {
-    // Non-converting casts (but not C's implicit conversion from void*).
-    case CK_BitCast:
-    case CK_NoOp:
-    case CK_AddressSpaceConversion:
-      if (auto PtrTy = CE->getSubExpr()->getType()->getAs<PointerType>()) {
-        if (PtrTy->getPointeeType()->isVoidType())
-          break;
-
-        LValueBaseInfo InnerBaseInfo;
-        TBAAAccessInfo InnerTBAAInfo;
-        Address Addr = EmitPointerWithAlignment(CE->getSubExpr(),
-                                                &InnerBaseInfo,
-                                                &InnerTBAAInfo);
-        if (BaseInfo) *BaseInfo = InnerBaseInfo;
-        if (TBAAInfo) *TBAAInfo = InnerTBAAInfo;
-
-        if (isa<ExplicitCastExpr>(CE)) {
-          LValueBaseInfo TargetTypeBaseInfo;
-          TBAAAccessInfo TargetTypeTBAAInfo;
-          CharUnits Align = getNaturalPointeeTypeAlignment(E->getType(),
-                                                           &TargetTypeBaseInfo,
-                                                           &TargetTypeTBAAInfo);
-          if (TBAAInfo)
-            *TBAAInfo = CGM.mergeTBAAInfoForCast(*TBAAInfo,
-                                                 TargetTypeTBAAInfo);
-          // If the source l-value is opaque, honor the alignment of the
-          // casted-to type.
-          if (InnerBaseInfo.getAlignmentSource() != AlignmentSource::Decl) {
-            if (BaseInfo)
-              BaseInfo->mergeForCast(TargetTypeBaseInfo);
-            Addr = Address(Addr.getPointer(), Align);
-          }
-        }
-
-        if (SanOpts.has(SanitizerKind::CFIUnrelatedCast) &&
-            CE->getCastKind() == CK_BitCast) {
-          if (auto PT = E->getType()->getAs<PointerType>())
-            EmitVTablePtrCheckForCast(PT->getPointeeType(), Addr.getPointer(),
-                                      /*MayBeNull=*/true,
-                                      CodeGenFunction::CFITCK_UnrelatedCast,
-                                      CE->getBeginLoc());
-        }
-        return CE->getCastKind() != CK_AddressSpaceConversion
-                   ? Builder.CreateBitCast(Addr, ConvertType(E->getType()))
-                   : Builder.CreateAddrSpaceCast(Addr,
-                                                 ConvertType(E->getType()));
-      }
-      break;
-
-    // Array-to-pointer decay.
-    case CK_ArrayToPointerDecay:
-      return EmitArrayToPointerDecay(CE->getSubExpr(), BaseInfo, TBAAInfo);
-
-    // Derived-to-base conversions.
-    case CK_UncheckedDerivedToBase:
-    case CK_DerivedToBase: {
-      // TODO: Support accesses to members of base classes in TBAA. For now, we
-      // conservatively pretend that the complete object is of the base class
-      // type.
-      if (TBAAInfo)
-        *TBAAInfo = CGM.getTBAAAccessInfo(E->getType());
-      Address Addr = EmitPointerWithAlignment(CE->getSubExpr(), BaseInfo);
-      auto Derived = CE->getSubExpr()->getType()->getPointeeCXXRecordDecl();
-      return GetAddressOfBaseClass(Addr, Derived,
-                                   CE->path_begin(), CE->path_end(),
-                                   ShouldNullCheckClassCastValue(CE),
-                                   CE->getExprLoc());
-    }
-
-    // TODO: Is there any reason to treat base-to-derived conversions
-    // specially?
-    default:
-      break;
-    }
-  }
-
-  // Unary &.
-  if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
-    if (UO->getOpcode() == UO_AddrOf) {
-      LValue LV = EmitLValue(UO->getSubExpr());
-      if (BaseInfo) *BaseInfo = LV.getBaseInfo();
-      if (TBAAInfo) *TBAAInfo = LV.getTBAAInfo();
-      return LV.getAddress();
-    }
-  }
-
-  // TODO: conditional operators, comma.
-
-  // Otherwise, use the alignment of the type.
-  CharUnits Align = getNaturalPointeeTypeAlignment(E->getType(), BaseInfo,
-                                                   TBAAInfo);
-  return Address(EmitScalarExpr(E), Align);
-}
-
-RValue CodeGenFunction::GetUndefRValue(QualType Ty) {
-  if (Ty->isVoidType())
-    return RValue::get(nullptr);
-
-  switch (getEvaluationKind(Ty)) {
-  case TEK_Complex: {
-    llvm::Type *EltTy =
-      ConvertType(Ty->castAs<ComplexType>()->getElementType());
-    llvm::Value *U = llvm::UndefValue::get(EltTy);
-    return RValue::getComplex(std::make_pair(U, U));
-  }
-
-  // If this is a use of an undefined aggregate type, the aggregate must have an
-  // identifiable address.  Just because the contents of the value are undefined
-  // doesn't mean that the address can't be taken and compared.
-  case TEK_Aggregate: {
-    Address DestPtr = CreateMemTemp(Ty, "undef.agg.tmp");
-    return RValue::getAggregate(DestPtr);
-  }
-
-  case TEK_Scalar:
-    return RValue::get(llvm::UndefValue::get(ConvertType(Ty)));
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-RValue CodeGenFunction::EmitUnsupportedRValue(const Expr *E,
-                                              const char *Name) {
-  ErrorUnsupported(E, Name);
-  return GetUndefRValue(E->getType());
-}
-
-LValue CodeGenFunction::EmitUnsupportedLValue(const Expr *E,
-                                              const char *Name) {
-  ErrorUnsupported(E, Name);
-  llvm::Type *Ty = llvm::PointerType::getUnqual(ConvertType(E->getType()));
-  return MakeAddrLValue(Address(llvm::UndefValue::get(Ty), CharUnits::One()),
-                        E->getType());
-}
-
-bool CodeGenFunction::IsWrappedCXXThis(const Expr *Obj) {
-  const Expr *Base = Obj;
-  while (!isa<CXXThisExpr>(Base)) {
-    // The result of a dynamic_cast can be null.
-    if (isa<CXXDynamicCastExpr>(Base))
-      return false;
-
-    if (const auto *CE = dyn_cast<CastExpr>(Base)) {
-      Base = CE->getSubExpr();
-    } else if (const auto *PE = dyn_cast<ParenExpr>(Base)) {
-      Base = PE->getSubExpr();
-    } else if (const auto *UO = dyn_cast<UnaryOperator>(Base)) {
-      if (UO->getOpcode() == UO_Extension)
-        Base = UO->getSubExpr();
-      else
-        return false;
-    } else {
-      return false;
-    }
-  }
-  return true;
-}
-
-LValue CodeGenFunction::EmitCheckedLValue(const Expr *E, TypeCheckKind TCK) {
-  LValue LV;
-  if (SanOpts.has(SanitizerKind::ArrayBounds) && isa<ArraySubscriptExpr>(E))
-    LV = EmitArraySubscriptExpr(cast<ArraySubscriptExpr>(E), /*Accessed*/true);
-  else
-    LV = EmitLValue(E);
-  if (!isa<DeclRefExpr>(E) && !LV.isBitField() && LV.isSimple()) {
-    SanitizerSet SkippedChecks;
-    if (const auto *ME = dyn_cast<MemberExpr>(E)) {
-      bool IsBaseCXXThis = IsWrappedCXXThis(ME->getBase());
-      if (IsBaseCXXThis)
-        SkippedChecks.set(SanitizerKind::Alignment, true);
-      if (IsBaseCXXThis || isa<DeclRefExpr>(ME->getBase()))
-        SkippedChecks.set(SanitizerKind::Null, true);
-    }
-    EmitTypeCheck(TCK, E->getExprLoc(), LV.getPointer(),
-                  E->getType(), LV.getAlignment(), SkippedChecks);
-  }
-  return LV;
-}
-
-/// EmitLValue - Emit code to compute a designator that specifies the location
-/// of the expression.
-///
-/// This can return one of two things: a simple address or a bitfield reference.
-/// In either case, the LLVM Value* in the LValue structure is guaranteed to be
-/// an LLVM pointer type.
-///
-/// If this returns a bitfield reference, nothing about the pointee type of the
-/// LLVM value is known: For example, it may not be a pointer to an integer.
-///
-/// If this returns a normal address, and if the lvalue's C type is fixed size,
-/// this method guarantees that the returned pointer type will point to an LLVM
-/// type of the same size of the lvalue's type.  If the lvalue has a variable
-/// length type, this is not possible.
-///
-LValue CodeGenFunction::EmitLValue(const Expr *E) {
-  ApplyDebugLocation DL(*this, E);
-  switch (E->getStmtClass()) {
-  default: return EmitUnsupportedLValue(E, "l-value expression");
-
-  case Expr::ObjCPropertyRefExprClass:
-    llvm_unreachable("cannot emit a property reference directly");
-
-  case Expr::ObjCSelectorExprClass:
-    return EmitObjCSelectorLValue(cast<ObjCSelectorExpr>(E));
-  case Expr::ObjCIsaExprClass:
-    return EmitObjCIsaExpr(cast<ObjCIsaExpr>(E));
-  case Expr::BinaryOperatorClass:
-    return EmitBinaryOperatorLValue(cast<BinaryOperator>(E));
-  case Expr::CompoundAssignOperatorClass: {
-    QualType Ty = E->getType();
-    if (const AtomicType *AT = Ty->getAs<AtomicType>())
-      Ty = AT->getValueType();
-    if (!Ty->isAnyComplexType())
-      return EmitCompoundAssignmentLValue(cast<CompoundAssignOperator>(E));
-    return EmitComplexCompoundAssignmentLValue(cast<CompoundAssignOperator>(E));
-  }
-  case Expr::CallExprClass:
-  case Expr::CXXMemberCallExprClass:
-  case Expr::CXXOperatorCallExprClass:
-  case Expr::UserDefinedLiteralClass:
-    return EmitCallExprLValue(cast<CallExpr>(E));
-  case Expr::VAArgExprClass:
-    return EmitVAArgExprLValue(cast<VAArgExpr>(E));
-  case Expr::DeclRefExprClass:
-    return EmitDeclRefLValue(cast<DeclRefExpr>(E));
-  case Expr::ConstantExprClass:
-    return EmitLValue(cast<ConstantExpr>(E)->getSubExpr());
-  case Expr::ParenExprClass:
-    return EmitLValue(cast<ParenExpr>(E)->getSubExpr());
-  case Expr::GenericSelectionExprClass:
-    return EmitLValue(cast<GenericSelectionExpr>(E)->getResultExpr());
-  case Expr::PredefinedExprClass:
-    return EmitPredefinedLValue(cast<PredefinedExpr>(E));
-  case Expr::StringLiteralClass:
-    return EmitStringLiteralLValue(cast<StringLiteral>(E));
-  case Expr::ObjCEncodeExprClass:
-    return EmitObjCEncodeExprLValue(cast<ObjCEncodeExpr>(E));
-  case Expr::PseudoObjectExprClass:
-    return EmitPseudoObjectLValue(cast<PseudoObjectExpr>(E));
-  case Expr::InitListExprClass:
-    return EmitInitListLValue(cast<InitListExpr>(E));
-  case Expr::CXXTemporaryObjectExprClass:
-  case Expr::CXXConstructExprClass:
-    return EmitCXXConstructLValue(cast<CXXConstructExpr>(E));
-  case Expr::CXXBindTemporaryExprClass:
-    return EmitCXXBindTemporaryLValue(cast<CXXBindTemporaryExpr>(E));
-  case Expr::CXXUuidofExprClass:
-    return EmitCXXUuidofLValue(cast<CXXUuidofExpr>(E));
-  case Expr::LambdaExprClass:
-    return EmitLambdaLValue(cast<LambdaExpr>(E));
-
-  case Expr::ExprWithCleanupsClass: {
-    const auto *cleanups = cast<ExprWithCleanups>(E);
-    enterFullExpression(cleanups);
-    RunCleanupsScope Scope(*this);
-    LValue LV = EmitLValue(cleanups->getSubExpr());
-    if (LV.isSimple()) {
-      // Defend against branches out of gnu statement expressions surrounded by
-      // cleanups.
-      llvm::Value *V = LV.getPointer();
-      Scope.ForceCleanup({&V});
-      return LValue::MakeAddr(Address(V, LV.getAlignment()), LV.getType(),
-                              getContext(), LV.getBaseInfo(), LV.getTBAAInfo());
-    }
-    // FIXME: Is it possible to create an ExprWithCleanups that produces a
-    // bitfield lvalue or some other non-simple lvalue?
-    return LV;
-  }
-
-  case Expr::CXXDefaultArgExprClass:
-    return EmitLValue(cast<CXXDefaultArgExpr>(E)->getExpr());
-  case Expr::CXXDefaultInitExprClass: {
-    CXXDefaultInitExprScope Scope(*this);
-    return EmitLValue(cast<CXXDefaultInitExpr>(E)->getExpr());
-  }
-  case Expr::CXXTypeidExprClass:
-    return EmitCXXTypeidLValue(cast<CXXTypeidExpr>(E));
-
-  case Expr::ObjCMessageExprClass:
-    return EmitObjCMessageExprLValue(cast<ObjCMessageExpr>(E));
-  case Expr::ObjCIvarRefExprClass:
-    return EmitObjCIvarRefLValue(cast<ObjCIvarRefExpr>(E));
-  case Expr::StmtExprClass:
-    return EmitStmtExprLValue(cast<StmtExpr>(E));
-  case Expr::UnaryOperatorClass:
-    return EmitUnaryOpLValue(cast<UnaryOperator>(E));
-  case Expr::ArraySubscriptExprClass:
-    return EmitArraySubscriptExpr(cast<ArraySubscriptExpr>(E));
-  case Expr::OMPArraySectionExprClass:
-    return EmitOMPArraySectionExpr(cast<OMPArraySectionExpr>(E));
-  case Expr::ExtVectorElementExprClass:
-    return EmitExtVectorElementExpr(cast<ExtVectorElementExpr>(E));
-  case Expr::MemberExprClass:
-    return EmitMemberExpr(cast<MemberExpr>(E));
-  case Expr::CompoundLiteralExprClass:
-    return EmitCompoundLiteralLValue(cast<CompoundLiteralExpr>(E));
-  case Expr::ConditionalOperatorClass:
-    return EmitConditionalOperatorLValue(cast<ConditionalOperator>(E));
-  case Expr::BinaryConditionalOperatorClass:
-    return EmitConditionalOperatorLValue(cast<BinaryConditionalOperator>(E));
-  case Expr::ChooseExprClass:
-    return EmitLValue(cast<ChooseExpr>(E)->getChosenSubExpr());
-  case Expr::OpaqueValueExprClass:
-    return EmitOpaqueValueLValue(cast<OpaqueValueExpr>(E));
-  case Expr::SubstNonTypeTemplateParmExprClass:
-    return EmitLValue(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement());
-  case Expr::ImplicitCastExprClass:
-  case Expr::CStyleCastExprClass:
-  case Expr::CXXFunctionalCastExprClass:
-  case Expr::CXXStaticCastExprClass:
-  case Expr::CXXDynamicCastExprClass:
-  case Expr::CXXReinterpretCastExprClass:
-  case Expr::CXXConstCastExprClass:
-  case Expr::ObjCBridgedCastExprClass:
-    return EmitCastLValue(cast<CastExpr>(E));
-
-  case Expr::MaterializeTemporaryExprClass:
-    return EmitMaterializeTemporaryExpr(cast<MaterializeTemporaryExpr>(E));
-
-  case Expr::CoawaitExprClass:
-    return EmitCoawaitLValue(cast<CoawaitExpr>(E));
-  case Expr::CoyieldExprClass:
-    return EmitCoyieldLValue(cast<CoyieldExpr>(E));
-  }
-}
-
-/// Given an object of the given canonical type, can we safely copy a
-/// value out of it based on its initializer?
-static bool isConstantEmittableObjectType(QualType type) {
-  assert(type.isCanonical());
-  assert(!type->isReferenceType());
-
-  // Must be const-qualified but non-volatile.
-  Qualifiers qs = type.getLocalQualifiers();
-  if (!qs.hasConst() || qs.hasVolatile()) return false;
-
-  // Otherwise, all object types satisfy this except C++ classes with
-  // mutable subobjects or non-trivial copy/destroy behavior.
-  if (const auto *RT = dyn_cast<RecordType>(type))
-    if (const auto *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()))
-      if (RD->hasMutableFields() || !RD->isTrivial())
-        return false;
-
-  return true;
-}
-
-/// Can we constant-emit a load of a reference to a variable of the
-/// given type?  This is different from predicates like
-/// Decl::isUsableInConstantExpressions because we do want it to apply
-/// in situations that don't necessarily satisfy the language's rules
-/// for this (e.g. C++'s ODR-use rules).  For example, we want to able
-/// to do this with const float variables even if those variables
-/// aren't marked 'constexpr'.
-enum ConstantEmissionKind {
-  CEK_None,
-  CEK_AsReferenceOnly,
-  CEK_AsValueOrReference,
-  CEK_AsValueOnly
-};
-static ConstantEmissionKind checkVarTypeForConstantEmission(QualType type) {
-  type = type.getCanonicalType();
-  if (const auto *ref = dyn_cast<ReferenceType>(type)) {
-    if (isConstantEmittableObjectType(ref->getPointeeType()))
-      return CEK_AsValueOrReference;
-    return CEK_AsReferenceOnly;
-  }
-  if (isConstantEmittableObjectType(type))
-    return CEK_AsValueOnly;
-  return CEK_None;
-}
-
-/// Try to emit a reference to the given value without producing it as
-/// an l-value.  This is actually more than an optimization: we can't
-/// produce an l-value for variables that we never actually captured
-/// in a block or lambda, which means const int variables or constexpr
-/// literals or similar.
-CodeGenFunction::ConstantEmission
-CodeGenFunction::tryEmitAsConstant(DeclRefExpr *refExpr) {
-  ValueDecl *value = refExpr->getDecl();
-
-  // The value needs to be an enum constant or a constant variable.
-  ConstantEmissionKind CEK;
-  if (isa<ParmVarDecl>(value)) {
-    CEK = CEK_None;
-  } else if (auto *var = dyn_cast<VarDecl>(value)) {
-    CEK = checkVarTypeForConstantEmission(var->getType());
-  } else if (isa<EnumConstantDecl>(value)) {
-    CEK = CEK_AsValueOnly;
-  } else {
-    CEK = CEK_None;
-  }
-  if (CEK == CEK_None) return ConstantEmission();
-
-  Expr::EvalResult result;
-  bool resultIsReference;
-  QualType resultType;
-
-  // It's best to evaluate all the way as an r-value if that's permitted.
-  if (CEK != CEK_AsReferenceOnly &&
-      refExpr->EvaluateAsRValue(result, getContext())) {
-    resultIsReference = false;
-    resultType = refExpr->getType();
-
-  // Otherwise, try to evaluate as an l-value.
-  } else if (CEK != CEK_AsValueOnly &&
-             refExpr->EvaluateAsLValue(result, getContext())) {
-    resultIsReference = true;
-    resultType = value->getType();
-
-  // Failure.
-  } else {
-    return ConstantEmission();
-  }
-
-  // In any case, if the initializer has side-effects, abandon ship.
-  if (result.HasSideEffects)
-    return ConstantEmission();
-
-  // Emit as a constant.
-  auto C = ConstantEmitter(*this).emitAbstract(refExpr->getLocation(),
-                                               result.Val, resultType);
-
-  // Make sure we emit a debug reference to the global variable.
-  // This should probably fire even for
-  if (isa<VarDecl>(value)) {
-    if (!getContext().DeclMustBeEmitted(cast<VarDecl>(value)))
-      EmitDeclRefExprDbgValue(refExpr, result.Val);
-  } else {
-    assert(isa<EnumConstantDecl>(value));
-    EmitDeclRefExprDbgValue(refExpr, result.Val);
-  }
-
-  // If we emitted a reference constant, we need to dereference that.
-  if (resultIsReference)
-    return ConstantEmission::forReference(C);
-
-  return ConstantEmission::forValue(C);
-}
-
-static DeclRefExpr *tryToConvertMemberExprToDeclRefExpr(CodeGenFunction &CGF,
-                                                        const MemberExpr *ME) {
-  if (auto *VD = dyn_cast<VarDecl>(ME->getMemberDecl())) {
-    // Try to emit static variable member expressions as DREs.
-    return DeclRefExpr::Create(
-        CGF.getContext(), NestedNameSpecifierLoc(), SourceLocation(), VD,
-        /*RefersToEnclosingVariableOrCapture=*/false, ME->getExprLoc(),
-        ME->getType(), ME->getValueKind());
-  }
-  return nullptr;
-}
-
-CodeGenFunction::ConstantEmission
-CodeGenFunction::tryEmitAsConstant(const MemberExpr *ME) {
-  if (DeclRefExpr *DRE = tryToConvertMemberExprToDeclRefExpr(*this, ME))
-    return tryEmitAsConstant(DRE);
-  return ConstantEmission();
-}
-
-llvm::Value *CodeGenFunction::emitScalarConstant(
-    const CodeGenFunction::ConstantEmission &Constant, Expr *E) {
-  assert(Constant && "not a constant");
-  if (Constant.isReference())
-    return EmitLoadOfLValue(Constant.getReferenceLValue(*this, E),
-                            E->getExprLoc())
-        .getScalarVal();
-  return Constant.getValue();
-}
-
-llvm::Value *CodeGenFunction::EmitLoadOfScalar(LValue lvalue,
-                                               SourceLocation Loc) {
-  return EmitLoadOfScalar(lvalue.getAddress(), lvalue.isVolatile(),
-                          lvalue.getType(), Loc, lvalue.getBaseInfo(),
-                          lvalue.getTBAAInfo(), lvalue.isNontemporal());
-}
-
-static bool hasBooleanRepresentation(QualType Ty) {
-  if (Ty->isBooleanType())
-    return true;
-
-  if (const EnumType *ET = Ty->getAs<EnumType>())
-    return ET->getDecl()->getIntegerType()->isBooleanType();
-
-  if (const AtomicType *AT = Ty->getAs<AtomicType>())
-    return hasBooleanRepresentation(AT->getValueType());
-
-  return false;
-}
-
-static bool getRangeForType(CodeGenFunction &CGF, QualType Ty,
-                            llvm::APInt &Min, llvm::APInt &End,
-                            bool StrictEnums, bool IsBool) {
-  const EnumType *ET = Ty->getAs<EnumType>();
-  bool IsRegularCPlusPlusEnum = CGF.getLangOpts().CPlusPlus && StrictEnums &&
-                                ET && !ET->getDecl()->isFixed();
-  if (!IsBool && !IsRegularCPlusPlusEnum)
-    return false;
-
-  if (IsBool) {
-    Min = llvm::APInt(CGF.getContext().getTypeSize(Ty), 0);
-    End = llvm::APInt(CGF.getContext().getTypeSize(Ty), 2);
-  } else {
-    const EnumDecl *ED = ET->getDecl();
-    llvm::Type *LTy = CGF.ConvertTypeForMem(ED->getIntegerType());
-    unsigned Bitwidth = LTy->getScalarSizeInBits();
-    unsigned NumNegativeBits = ED->getNumNegativeBits();
-    unsigned NumPositiveBits = ED->getNumPositiveBits();
-
-    if (NumNegativeBits) {
-      unsigned NumBits = std::max(NumNegativeBits, NumPositiveBits + 1);
-      assert(NumBits <= Bitwidth);
-      End = llvm::APInt(Bitwidth, 1) << (NumBits - 1);
-      Min = -End;
-    } else {
-      assert(NumPositiveBits <= Bitwidth);
-      End = llvm::APInt(Bitwidth, 1) << NumPositiveBits;
-      Min = llvm::APInt(Bitwidth, 0);
-    }
-  }
-  return true;
-}
-
-llvm::MDNode *CodeGenFunction::getRangeForLoadFromType(QualType Ty) {
-  llvm::APInt Min, End;
-  if (!getRangeForType(*this, Ty, Min, End, CGM.getCodeGenOpts().StrictEnums,
-                       hasBooleanRepresentation(Ty)))
-    return nullptr;
-
-  llvm::MDBuilder MDHelper(getLLVMContext());
-  return MDHelper.createRange(Min, End);
-}
-
-bool CodeGenFunction::EmitScalarRangeCheck(llvm::Value *Value, QualType Ty,
-                                           SourceLocation Loc) {
-  bool HasBoolCheck = SanOpts.has(SanitizerKind::Bool);
-  bool HasEnumCheck = SanOpts.has(SanitizerKind::Enum);
-  if (!HasBoolCheck && !HasEnumCheck)
-    return false;
-
-  bool IsBool = hasBooleanRepresentation(Ty) ||
-                NSAPI(CGM.getContext()).isObjCBOOLType(Ty);
-  bool NeedsBoolCheck = HasBoolCheck && IsBool;
-  bool NeedsEnumCheck = HasEnumCheck && Ty->getAs<EnumType>();
-  if (!NeedsBoolCheck && !NeedsEnumCheck)
-    return false;
-
-  // Single-bit booleans don't need to be checked. Special-case this to avoid
-  // a bit width mismatch when handling bitfield values. This is handled by
-  // EmitFromMemory for the non-bitfield case.
-  if (IsBool &&
-      cast<llvm::IntegerType>(Value->getType())->getBitWidth() == 1)
-    return false;
-
-  llvm::APInt Min, End;
-  if (!getRangeForType(*this, Ty, Min, End, /*StrictEnums=*/true, IsBool))
-    return true;
-
-  auto &Ctx = getLLVMContext();
-  SanitizerScope SanScope(this);
-  llvm::Value *Check;
-  --End;
-  if (!Min) {
-    Check = Builder.CreateICmpULE(Value, llvm::ConstantInt::get(Ctx, End));
-  } else {
-    llvm::Value *Upper =
-        Builder.CreateICmpSLE(Value, llvm::ConstantInt::get(Ctx, End));
-    llvm::Value *Lower =
-        Builder.CreateICmpSGE(Value, llvm::ConstantInt::get(Ctx, Min));
-    Check = Builder.CreateAnd(Upper, Lower);
-  }
-  llvm::Constant *StaticArgs[] = {EmitCheckSourceLocation(Loc),
-                                  EmitCheckTypeDescriptor(Ty)};
-  SanitizerMask Kind =
-      NeedsEnumCheck ? SanitizerKind::Enum : SanitizerKind::Bool;
-  EmitCheck(std::make_pair(Check, Kind), SanitizerHandler::LoadInvalidValue,
-            StaticArgs, EmitCheckValue(Value));
-  return true;
-}
-
-llvm::Value *CodeGenFunction::EmitLoadOfScalar(Address Addr, bool Volatile,
-                                               QualType Ty,
-                                               SourceLocation Loc,
-                                               LValueBaseInfo BaseInfo,
-                                               TBAAAccessInfo TBAAInfo,
-                                               bool isNontemporal) {
-  if (!CGM.getCodeGenOpts().PreserveVec3Type) {
-    // For better performance, handle vector loads differently.
-    if (Ty->isVectorType()) {
-      const llvm::Type *EltTy = Addr.getElementType();
-
-      const auto *VTy = cast<llvm::VectorType>(EltTy);
-
-      // Handle vectors of size 3 like size 4 for better performance.
-      if (VTy->getNumElements() == 3) {
-
-        // Bitcast to vec4 type.
-        llvm::VectorType *vec4Ty =
-            llvm::VectorType::get(VTy->getElementType(), 4);
-        Address Cast = Builder.CreateElementBitCast(Addr, vec4Ty, "castToVec4");
-        // Now load value.
-        llvm::Value *V = Builder.CreateLoad(Cast, Volatile, "loadVec4");
-
-        // Shuffle vector to get vec3.
-        V = Builder.CreateShuffleVector(V, llvm::UndefValue::get(vec4Ty),
-                                        {0, 1, 2}, "extractVec");
-        return EmitFromMemory(V, Ty);
-      }
-    }
-  }
-
-  // Atomic operations have to be done on integral types.
-  LValue AtomicLValue =
-      LValue::MakeAddr(Addr, Ty, getContext(), BaseInfo, TBAAInfo);
-  if (Ty->isAtomicType() || LValueIsSuitableForInlineAtomic(AtomicLValue)) {
-    return EmitAtomicLoad(AtomicLValue, Loc).getScalarVal();
-  }
-
-  llvm::LoadInst *Load = Builder.CreateLoad(Addr, Volatile);
-  if (isNontemporal) {
-    llvm::MDNode *Node = llvm::MDNode::get(
-        Load->getContext(), llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
-    Load->setMetadata(CGM.getModule().getMDKindID("nontemporal"), Node);
-  }
-
-  CGM.DecorateInstructionWithTBAA(Load, TBAAInfo);
-
-  if (EmitScalarRangeCheck(Load, Ty, Loc)) {
-    // In order to prevent the optimizer from throwing away the check, don't
-    // attach range metadata to the load.
-  } else if (CGM.getCodeGenOpts().OptimizationLevel > 0)
-    if (llvm::MDNode *RangeInfo = getRangeForLoadFromType(Ty))
-      Load->setMetadata(llvm::LLVMContext::MD_range, RangeInfo);
-
-  return EmitFromMemory(Load, Ty);
-}
-
-llvm::Value *CodeGenFunction::EmitToMemory(llvm::Value *Value, QualType Ty) {
-  // Bool has a different representation in memory than in registers.
-  if (hasBooleanRepresentation(Ty)) {
-    // This should really always be an i1, but sometimes it's already
-    // an i8, and it's awkward to track those cases down.
-    if (Value->getType()->isIntegerTy(1))
-      return Builder.CreateZExt(Value, ConvertTypeForMem(Ty), "frombool");
-    assert(Value->getType()->isIntegerTy(getContext().getTypeSize(Ty)) &&
-           "wrong value rep of bool");
-  }
-
-  return Value;
-}
-
-llvm::Value *CodeGenFunction::EmitFromMemory(llvm::Value *Value, QualType Ty) {
-  // Bool has a different representation in memory than in registers.
-  if (hasBooleanRepresentation(Ty)) {
-    assert(Value->getType()->isIntegerTy(getContext().getTypeSize(Ty)) &&
-           "wrong value rep of bool");
-    return Builder.CreateTrunc(Value, Builder.getInt1Ty(), "tobool");
-  }
-
-  return Value;
-}
-
-void CodeGenFunction::EmitStoreOfScalar(llvm::Value *Value, Address Addr,
-                                        bool Volatile, QualType Ty,
-                                        LValueBaseInfo BaseInfo,
-                                        TBAAAccessInfo TBAAInfo,
-                                        bool isInit, bool isNontemporal) {
-  if (!CGM.getCodeGenOpts().PreserveVec3Type) {
-    // Handle vectors differently to get better performance.
-    if (Ty->isVectorType()) {
-      llvm::Type *SrcTy = Value->getType();
-      auto *VecTy = dyn_cast<llvm::VectorType>(SrcTy);
-      // Handle vec3 special.
-      if (VecTy && VecTy->getNumElements() == 3) {
-        // Our source is a vec3, do a shuffle vector to make it a vec4.
-        llvm::Constant *Mask[] = {Builder.getInt32(0), Builder.getInt32(1),
-                                  Builder.getInt32(2),
-                                  llvm::UndefValue::get(Builder.getInt32Ty())};
-        llvm::Value *MaskV = llvm::ConstantVector::get(Mask);
-        Value = Builder.CreateShuffleVector(Value, llvm::UndefValue::get(VecTy),
-                                            MaskV, "extractVec");
-        SrcTy = llvm::VectorType::get(VecTy->getElementType(), 4);
-      }
-      if (Addr.getElementType() != SrcTy) {
-        Addr = Builder.CreateElementBitCast(Addr, SrcTy, "storetmp");
-      }
-    }
-  }
-
-  Value = EmitToMemory(Value, Ty);
-
-  LValue AtomicLValue =
-      LValue::MakeAddr(Addr, Ty, getContext(), BaseInfo, TBAAInfo);
-  if (Ty->isAtomicType() ||
-      (!isInit && LValueIsSuitableForInlineAtomic(AtomicLValue))) {
-    EmitAtomicStore(RValue::get(Value), AtomicLValue, isInit);
-    return;
-  }
-
-  llvm::StoreInst *Store = Builder.CreateStore(Value, Addr, Volatile);
-  if (isNontemporal) {
-    llvm::MDNode *Node =
-        llvm::MDNode::get(Store->getContext(),
-                          llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
-    Store->setMetadata(CGM.getModule().getMDKindID("nontemporal"), Node);
-  }
-
-  CGM.DecorateInstructionWithTBAA(Store, TBAAInfo);
-}
-
-void CodeGenFunction::EmitStoreOfScalar(llvm::Value *value, LValue lvalue,
-                                        bool isInit) {
-  EmitStoreOfScalar(value, lvalue.getAddress(), lvalue.isVolatile(),
-                    lvalue.getType(), lvalue.getBaseInfo(),
-                    lvalue.getTBAAInfo(), isInit, lvalue.isNontemporal());
-}
-
-/// EmitLoadOfLValue - Given an expression that represents a value lvalue, this
-/// method emits the address of the lvalue, then loads the result as an rvalue,
-/// returning the rvalue.
-RValue CodeGenFunction::EmitLoadOfLValue(LValue LV, SourceLocation Loc) {
-  if (LV.isObjCWeak()) {
-    // load of a __weak object.
-    Address AddrWeakObj = LV.getAddress();
-    return RValue::get(CGM.getObjCRuntime().EmitObjCWeakRead(*this,
-                                                             AddrWeakObj));
-  }
-  if (LV.getQuals().getObjCLifetime() == Qualifiers::OCL_Weak) {
-    // In MRC mode, we do a load+autorelease.
-    if (!getLangOpts().ObjCAutoRefCount) {
-      return RValue::get(EmitARCLoadWeak(LV.getAddress()));
-    }
-
-    // In ARC mode, we load retained and then consume the value.
-    llvm::Value *Object = EmitARCLoadWeakRetained(LV.getAddress());
-    Object = EmitObjCConsumeObject(LV.getType(), Object);
-    return RValue::get(Object);
-  }
-
-  if (LV.isSimple()) {
-    assert(!LV.getType()->isFunctionType());
-
-    // Everything needs a load.
-    return RValue::get(EmitLoadOfScalar(LV, Loc));
-  }
-
-  if (LV.isVectorElt()) {
-    llvm::LoadInst *Load = Builder.CreateLoad(LV.getVectorAddress(),
-                                              LV.isVolatileQualified());
-    return RValue::get(Builder.CreateExtractElement(Load, LV.getVectorIdx(),
-                                                    "vecext"));
-  }
-
-  // If this is a reference to a subset of the elements of a vector, either
-  // shuffle the input or extract/insert them as appropriate.
-  if (LV.isExtVectorElt())
-    return EmitLoadOfExtVectorElementLValue(LV);
-
-  // Global Register variables always invoke intrinsics
-  if (LV.isGlobalReg())
-    return EmitLoadOfGlobalRegLValue(LV);
-
-  assert(LV.isBitField() && "Unknown LValue type!");
-  return EmitLoadOfBitfieldLValue(LV, Loc);
-}
-
-RValue CodeGenFunction::EmitLoadOfBitfieldLValue(LValue LV,
-                                                 SourceLocation Loc) {
-  const CGBitFieldInfo &Info = LV.getBitFieldInfo();
-
-  // Get the output type.
-  llvm::Type *ResLTy = ConvertType(LV.getType());
-
-  Address Ptr = LV.getBitFieldAddress();
-  llvm::Value *Val = Builder.CreateLoad(Ptr, LV.isVolatileQualified(), "bf.load");
-
-  if (Info.IsSigned) {
-    assert(static_cast<unsigned>(Info.Offset + Info.Size) <= Info.StorageSize);
-    unsigned HighBits = Info.StorageSize - Info.Offset - Info.Size;
-    if (HighBits)
-      Val = Builder.CreateShl(Val, HighBits, "bf.shl");
-    if (Info.Offset + HighBits)
-      Val = Builder.CreateAShr(Val, Info.Offset + HighBits, "bf.ashr");
-  } else {
-    if (Info.Offset)
-      Val = Builder.CreateLShr(Val, Info.Offset, "bf.lshr");
-    if (static_cast<unsigned>(Info.Offset) + Info.Size < Info.StorageSize)
-      Val = Builder.CreateAnd(Val, llvm::APInt::getLowBitsSet(Info.StorageSize,
-                                                              Info.Size),
-                              "bf.clear");
-  }
-  Val = Builder.CreateIntCast(Val, ResLTy, Info.IsSigned, "bf.cast");
-  EmitScalarRangeCheck(Val, LV.getType(), Loc);
-  return RValue::get(Val);
-}
-
-// If this is a reference to a subset of the elements of a vector, create an
-// appropriate shufflevector.
-RValue CodeGenFunction::EmitLoadOfExtVectorElementLValue(LValue LV) {
-  llvm::Value *Vec = Builder.CreateLoad(LV.getExtVectorAddress(),
-                                        LV.isVolatileQualified());
-
-  const llvm::Constant *Elts = LV.getExtVectorElts();
-
-  // If the result of the expression is a non-vector type, we must be extracting
-  // a single element.  Just codegen as an extractelement.
-  const VectorType *ExprVT = LV.getType()->getAs<VectorType>();
-  if (!ExprVT) {
-    unsigned InIdx = getAccessedFieldNo(0, Elts);
-    llvm::Value *Elt = llvm::ConstantInt::get(SizeTy, InIdx);
-    return RValue::get(Builder.CreateExtractElement(Vec, Elt));
-  }
-
-  // Always use shuffle vector to try to retain the original program structure
-  unsigned NumResultElts = ExprVT->getNumElements();
-
-  SmallVector<llvm::Constant*, 4> Mask;
-  for (unsigned i = 0; i != NumResultElts; ++i)
-    Mask.push_back(Builder.getInt32(getAccessedFieldNo(i, Elts)));
-
-  llvm::Value *MaskV = llvm::ConstantVector::get(Mask);
-  Vec = Builder.CreateShuffleVector(Vec, llvm::UndefValue::get(Vec->getType()),
-                                    MaskV);
-  return RValue::get(Vec);
-}
-
-/// Generates lvalue for partial ext_vector access.
-Address CodeGenFunction::EmitExtVectorElementLValue(LValue LV) {
-  Address VectorAddress = LV.getExtVectorAddress();
-  const VectorType *ExprVT = LV.getType()->getAs<VectorType>();
-  QualType EQT = ExprVT->getElementType();
-  llvm::Type *VectorElementTy = CGM.getTypes().ConvertType(EQT);
-
-  Address CastToPointerElement =
-    Builder.CreateElementBitCast(VectorAddress, VectorElementTy,
-                                 "conv.ptr.element");
-
-  const llvm::Constant *Elts = LV.getExtVectorElts();
-  unsigned ix = getAccessedFieldNo(0, Elts);
-
-  Address VectorBasePtrPlusIx =
-    Builder.CreateConstInBoundsGEP(CastToPointerElement, ix,
-                                   getContext().getTypeSizeInChars(EQT),
-                                   "vector.elt");
-
-  return VectorBasePtrPlusIx;
-}
-
-/// Load of global gamed gegisters are always calls to intrinsics.
-RValue CodeGenFunction::EmitLoadOfGlobalRegLValue(LValue LV) {
-  assert((LV.getType()->isIntegerType() || LV.getType()->isPointerType()) &&
-         "Bad type for register variable");
-  llvm::MDNode *RegName = cast<llvm::MDNode>(
-      cast<llvm::MetadataAsValue>(LV.getGlobalReg())->getMetadata());
-
-  // We accept integer and pointer types only
-  llvm::Type *OrigTy = CGM.getTypes().ConvertType(LV.getType());
-  llvm::Type *Ty = OrigTy;
-  if (OrigTy->isPointerTy())
-    Ty = CGM.getTypes().getDataLayout().getIntPtrType(OrigTy);
-  llvm::Type *Types[] = { Ty };
-
-  llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::read_register, Types);
-  llvm::Value *Call = Builder.CreateCall(
-      F, llvm::MetadataAsValue::get(Ty->getContext(), RegName));
-  if (OrigTy->isPointerTy())
-    Call = Builder.CreateIntToPtr(Call, OrigTy);
-  return RValue::get(Call);
-}
-
-
-/// EmitStoreThroughLValue - Store the specified rvalue into the specified
-/// lvalue, where both are guaranteed to the have the same type, and that type
-/// is 'Ty'.
-void CodeGenFunction::EmitStoreThroughLValue(RValue Src, LValue Dst,
-                                             bool isInit) {
-  if (!Dst.isSimple()) {
-    if (Dst.isVectorElt()) {
-      // Read/modify/write the vector, inserting the new element.
-      llvm::Value *Vec = Builder.CreateLoad(Dst.getVectorAddress(),
-                                            Dst.isVolatileQualified());
-      Vec = Builder.CreateInsertElement(Vec, Src.getScalarVal(),
-                                        Dst.getVectorIdx(), "vecins");
-      Builder.CreateStore(Vec, Dst.getVectorAddress(),
-                          Dst.isVolatileQualified());
-      return;
-    }
-
-    // If this is an update of extended vector elements, insert them as
-    // appropriate.
-    if (Dst.isExtVectorElt())
-      return EmitStoreThroughExtVectorComponentLValue(Src, Dst);
-
-    if (Dst.isGlobalReg())
-      return EmitStoreThroughGlobalRegLValue(Src, Dst);
-
-    assert(Dst.isBitField() && "Unknown LValue type");
-    return EmitStoreThroughBitfieldLValue(Src, Dst);
-  }
-
-  // There's special magic for assigning into an ARC-qualified l-value.
-  if (Qualifiers::ObjCLifetime Lifetime = Dst.getQuals().getObjCLifetime()) {
-    switch (Lifetime) {
-    case Qualifiers::OCL_None:
-      llvm_unreachable("present but none");
-
-    case Qualifiers::OCL_ExplicitNone:
-      // nothing special
-      break;
-
-    case Qualifiers::OCL_Strong:
-      if (isInit) {
-        Src = RValue::get(EmitARCRetain(Dst.getType(), Src.getScalarVal()));
-        break;
-      }
-      EmitARCStoreStrong(Dst, Src.getScalarVal(), /*ignore*/ true);
-      return;
-
-    case Qualifiers::OCL_Weak:
-      if (isInit)
-        // Initialize and then skip the primitive store.
-        EmitARCInitWeak(Dst.getAddress(), Src.getScalarVal());
-      else
-        EmitARCStoreWeak(Dst.getAddress(), Src.getScalarVal(), /*ignore*/ true);
-      return;
-
-    case Qualifiers::OCL_Autoreleasing:
-      Src = RValue::get(EmitObjCExtendObjectLifetime(Dst.getType(),
-                                                     Src.getScalarVal()));
-      // fall into the normal path
-      break;
-    }
-  }
-
-  if (Dst.isObjCWeak() && !Dst.isNonGC()) {
-    // load of a __weak object.
-    Address LvalueDst = Dst.getAddress();
-    llvm::Value *src = Src.getScalarVal();
-     CGM.getObjCRuntime().EmitObjCWeakAssign(*this, src, LvalueDst);
-    return;
-  }
-
-  if (Dst.isObjCStrong() && !Dst.isNonGC()) {
-    // load of a __strong object.
-    Address LvalueDst = Dst.getAddress();
-    llvm::Value *src = Src.getScalarVal();
-    if (Dst.isObjCIvar()) {
-      assert(Dst.getBaseIvarExp() && "BaseIvarExp is NULL");
-      llvm::Type *ResultType = IntPtrTy;
-      Address dst = EmitPointerWithAlignment(Dst.getBaseIvarExp());
-      llvm::Value *RHS = dst.getPointer();
-      RHS = Builder.CreatePtrToInt(RHS, ResultType, "sub.ptr.rhs.cast");
-      llvm::Value *LHS =
-        Builder.CreatePtrToInt(LvalueDst.getPointer(), ResultType,
-                               "sub.ptr.lhs.cast");
-      llvm::Value *BytesBetween = Builder.CreateSub(LHS, RHS, "ivar.offset");
-      CGM.getObjCRuntime().EmitObjCIvarAssign(*this, src, dst,
-                                              BytesBetween);
-    } else if (Dst.isGlobalObjCRef()) {
-      CGM.getObjCRuntime().EmitObjCGlobalAssign(*this, src, LvalueDst,
-                                                Dst.isThreadLocalRef());
-    }
-    else
-      CGM.getObjCRuntime().EmitObjCStrongCastAssign(*this, src, LvalueDst);
-    return;
-  }
-
-  assert(Src.isScalar() && "Can't emit an agg store with this method");
-  EmitStoreOfScalar(Src.getScalarVal(), Dst, isInit);
-}
-
-void CodeGenFunction::EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
-                                                     llvm::Value **Result) {
-  const CGBitFieldInfo &Info = Dst.getBitFieldInfo();
-  llvm::Type *ResLTy = ConvertTypeForMem(Dst.getType());
-  Address Ptr = Dst.getBitFieldAddress();
-
-  // Get the source value, truncated to the width of the bit-field.
-  llvm::Value *SrcVal = Src.getScalarVal();
-
-  // Cast the source to the storage type and shift it into place.
-  SrcVal = Builder.CreateIntCast(SrcVal, Ptr.getElementType(),
-                                 /*IsSigned=*/false);
-  llvm::Value *MaskedVal = SrcVal;
-
-  // See if there are other bits in the bitfield's storage we'll need to load
-  // and mask together with source before storing.
-  if (Info.StorageSize != Info.Size) {
-    assert(Info.StorageSize > Info.Size && "Invalid bitfield size.");
-    llvm::Value *Val =
-      Builder.CreateLoad(Ptr, Dst.isVolatileQualified(), "bf.load");
-
-    // Mask the source value as needed.
-    if (!hasBooleanRepresentation(Dst.getType()))
-      SrcVal = Builder.CreateAnd(SrcVal,
-                                 llvm::APInt::getLowBitsSet(Info.StorageSize,
-                                                            Info.Size),
-                                 "bf.value");
-    MaskedVal = SrcVal;
-    if (Info.Offset)
-      SrcVal = Builder.CreateShl(SrcVal, Info.Offset, "bf.shl");
-
-    // Mask out the original value.
-    Val = Builder.CreateAnd(Val,
-                            ~llvm::APInt::getBitsSet(Info.StorageSize,
-                                                     Info.Offset,
-                                                     Info.Offset + Info.Size),
-                            "bf.clear");
-
-    // Or together the unchanged values and the source value.
-    SrcVal = Builder.CreateOr(Val, SrcVal, "bf.set");
-  } else {
-    assert(Info.Offset == 0);
-  }
-
-  // Write the new value back out.
-  Builder.CreateStore(SrcVal, Ptr, Dst.isVolatileQualified());
-
-  // Return the new value of the bit-field, if requested.
-  if (Result) {
-    llvm::Value *ResultVal = MaskedVal;
-
-    // Sign extend the value if needed.
-    if (Info.IsSigned) {
-      assert(Info.Size <= Info.StorageSize);
-      unsigned HighBits = Info.StorageSize - Info.Size;
-      if (HighBits) {
-        ResultVal = Builder.CreateShl(ResultVal, HighBits, "bf.result.shl");
-        ResultVal = Builder.CreateAShr(ResultVal, HighBits, "bf.result.ashr");
-      }
-    }
-
-    ResultVal = Builder.CreateIntCast(ResultVal, ResLTy, Info.IsSigned,
-                                      "bf.result.cast");
-    *Result = EmitFromMemory(ResultVal, Dst.getType());
-  }
-}
-
-void CodeGenFunction::EmitStoreThroughExtVectorComponentLValue(RValue Src,
-                                                               LValue Dst) {
-  // This access turns into a read/modify/write of the vector.  Load the input
-  // value now.
-  llvm::Value *Vec = Builder.CreateLoad(Dst.getExtVectorAddress(),
-                                        Dst.isVolatileQualified());
-  const llvm::Constant *Elts = Dst.getExtVectorElts();
-
-  llvm::Value *SrcVal = Src.getScalarVal();
-
-  if (const VectorType *VTy = Dst.getType()->getAs<VectorType>()) {
-    unsigned NumSrcElts = VTy->getNumElements();
-    unsigned NumDstElts = Vec->getType()->getVectorNumElements();
-    if (NumDstElts == NumSrcElts) {
-      // Use shuffle vector is the src and destination are the same number of
-      // elements and restore the vector mask since it is on the side it will be
-      // stored.
-      SmallVector<llvm::Constant*, 4> Mask(NumDstElts);
-      for (unsigned i = 0; i != NumSrcElts; ++i)
-        Mask[getAccessedFieldNo(i, Elts)] = Builder.getInt32(i);
-
-      llvm::Value *MaskV = llvm::ConstantVector::get(Mask);
-      Vec = Builder.CreateShuffleVector(SrcVal,
-                                        llvm::UndefValue::get(Vec->getType()),
-                                        MaskV);
-    } else if (NumDstElts > NumSrcElts) {
-      // Extended the source vector to the same length and then shuffle it
-      // into the destination.
-      // FIXME: since we're shuffling with undef, can we just use the indices
-      //        into that?  This could be simpler.
-      SmallVector<llvm::Constant*, 4> ExtMask;
-      for (unsigned i = 0; i != NumSrcElts; ++i)
-        ExtMask.push_back(Builder.getInt32(i));
-      ExtMask.resize(NumDstElts, llvm::UndefValue::get(Int32Ty));
-      llvm::Value *ExtMaskV = llvm::ConstantVector::get(ExtMask);
-      llvm::Value *ExtSrcVal =
-        Builder.CreateShuffleVector(SrcVal,
-                                    llvm::UndefValue::get(SrcVal->getType()),
-                                    ExtMaskV);
-      // build identity
-      SmallVector<llvm::Constant*, 4> Mask;
-      for (unsigned i = 0; i != NumDstElts; ++i)
-        Mask.push_back(Builder.getInt32(i));
-
-      // When the vector size is odd and .odd or .hi is used, the last element
-      // of the Elts constant array will be one past the size of the vector.
-      // Ignore the last element here, if it is greater than the mask size.
-      if (getAccessedFieldNo(NumSrcElts - 1, Elts) == Mask.size())
-        NumSrcElts--;
-
-      // modify when what gets shuffled in
-      for (unsigned i = 0; i != NumSrcElts; ++i)
-        Mask[getAccessedFieldNo(i, Elts)] = Builder.getInt32(i+NumDstElts);
-      llvm::Value *MaskV = llvm::ConstantVector::get(Mask);
-      Vec = Builder.CreateShuffleVector(Vec, ExtSrcVal, MaskV);
-    } else {
-      // We should never shorten the vector
-      llvm_unreachable("unexpected shorten vector length");
-    }
-  } else {
-    // If the Src is a scalar (not a vector) it must be updating one element.
-    unsigned InIdx = getAccessedFieldNo(0, Elts);
-    llvm::Value *Elt = llvm::ConstantInt::get(SizeTy, InIdx);
-    Vec = Builder.CreateInsertElement(Vec, SrcVal, Elt);
-  }
-
-  Builder.CreateStore(Vec, Dst.getExtVectorAddress(),
-                      Dst.isVolatileQualified());
-}
-
-/// Store of global named registers are always calls to intrinsics.
-void CodeGenFunction::EmitStoreThroughGlobalRegLValue(RValue Src, LValue Dst) {
-  assert((Dst.getType()->isIntegerType() || Dst.getType()->isPointerType()) &&
-         "Bad type for register variable");
-  llvm::MDNode *RegName = cast<llvm::MDNode>(
-      cast<llvm::MetadataAsValue>(Dst.getGlobalReg())->getMetadata());
-  assert(RegName && "Register LValue is not metadata");
-
-  // We accept integer and pointer types only
-  llvm::Type *OrigTy = CGM.getTypes().ConvertType(Dst.getType());
-  llvm::Type *Ty = OrigTy;
-  if (OrigTy->isPointerTy())
-    Ty = CGM.getTypes().getDataLayout().getIntPtrType(OrigTy);
-  llvm::Type *Types[] = { Ty };
-
-  llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::write_register, Types);
-  llvm::Value *Value = Src.getScalarVal();
-  if (OrigTy->isPointerTy())
-    Value = Builder.CreatePtrToInt(Value, Ty);
-  Builder.CreateCall(
-      F, {llvm::MetadataAsValue::get(Ty->getContext(), RegName), Value});
-}
-
-// setObjCGCLValueClass - sets class of the lvalue for the purpose of
-// generating write-barries API. It is currently a global, ivar,
-// or neither.
-static void setObjCGCLValueClass(const ASTContext &Ctx, const Expr *E,
-                                 LValue &LV,
-                                 bool IsMemberAccess=false) {
-  if (Ctx.getLangOpts().getGC() == LangOptions::NonGC)
-    return;
-
-  if (isa<ObjCIvarRefExpr>(E)) {
-    QualType ExpTy = E->getType();
-    if (IsMemberAccess && ExpTy->isPointerType()) {
-      // If ivar is a structure pointer, assigning to field of
-      // this struct follows gcc's behavior and makes it a non-ivar
-      // writer-barrier conservatively.
-      ExpTy = ExpTy->getAs<PointerType>()->getPointeeType();
-      if (ExpTy->isRecordType()) {
-        LV.setObjCIvar(false);
-        return;
-      }
-    }
-    LV.setObjCIvar(true);
-    auto *Exp = cast<ObjCIvarRefExpr>(const_cast<Expr *>(E));
-    LV.setBaseIvarExp(Exp->getBase());
-    LV.setObjCArray(E->getType()->isArrayType());
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<DeclRefExpr>(E)) {
-    if (const auto *VD = dyn_cast<VarDecl>(Exp->getDecl())) {
-      if (VD->hasGlobalStorage()) {
-        LV.setGlobalObjCRef(true);
-        LV.setThreadLocalRef(VD->getTLSKind() != VarDecl::TLS_None);
-      }
-    }
-    LV.setObjCArray(E->getType()->isArrayType());
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<UnaryOperator>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV, IsMemberAccess);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<ParenExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV, IsMemberAccess);
-    if (LV.isObjCIvar()) {
-      // If cast is to a structure pointer, follow gcc's behavior and make it
-      // a non-ivar write-barrier.
-      QualType ExpTy = E->getType();
-      if (ExpTy->isPointerType())
-        ExpTy = ExpTy->getAs<PointerType>()->getPointeeType();
-      if (ExpTy->isRecordType())
-        LV.setObjCIvar(false);
-    }
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<GenericSelectionExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getResultExpr(), LV);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<ImplicitCastExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV, IsMemberAccess);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<CStyleCastExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV, IsMemberAccess);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<ObjCBridgedCastExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV, IsMemberAccess);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<ArraySubscriptExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getBase(), LV);
-    if (LV.isObjCIvar() && !LV.isObjCArray())
-      // Using array syntax to assigning to what an ivar points to is not
-      // same as assigning to the ivar itself. {id *Names;} Names[i] = 0;
-      LV.setObjCIvar(false);
-    else if (LV.isGlobalObjCRef() && !LV.isObjCArray())
-      // Using array syntax to assigning to what global points to is not
-      // same as assigning to the global itself. {id *G;} G[i] = 0;
-      LV.setGlobalObjCRef(false);
-    return;
-  }
-
-  if (const auto *Exp = dyn_cast<MemberExpr>(E)) {
-    setObjCGCLValueClass(Ctx, Exp->getBase(), LV, true);
-    // We don't know if member is an 'ivar', but this flag is looked at
-    // only in the context of LV.isObjCIvar().
-    LV.setObjCArray(E->getType()->isArrayType());
-    return;
-  }
-}
-
-static llvm::Value *
-EmitBitCastOfLValueToProperType(CodeGenFunction &CGF,
-                                llvm::Value *V, llvm::Type *IRType,
-                                StringRef Name = StringRef()) {
-  unsigned AS = cast<llvm::PointerType>(V->getType())->getAddressSpace();
-  return CGF.Builder.CreateBitCast(V, IRType->getPointerTo(AS), Name);
-}
-
-static LValue EmitThreadPrivateVarDeclLValue(
-    CodeGenFunction &CGF, const VarDecl *VD, QualType T, Address Addr,
-    llvm::Type *RealVarTy, SourceLocation Loc) {
-  Addr = CGF.CGM.getOpenMPRuntime().getAddrOfThreadPrivate(CGF, VD, Addr, Loc);
-  Addr = CGF.Builder.CreateElementBitCast(Addr, RealVarTy);
-  return CGF.MakeAddrLValue(Addr, T, AlignmentSource::Decl);
-}
-
-static Address emitDeclTargetLinkVarDeclLValue(CodeGenFunction &CGF,
-                                               const VarDecl *VD, QualType T) {
-  llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res =
-      OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD);
-  if (!Res || *Res == OMPDeclareTargetDeclAttr::MT_To)
-    return Address::invalid();
-  assert(*Res == OMPDeclareTargetDeclAttr::MT_Link && "Expected link clause");
-  QualType PtrTy = CGF.getContext().getPointerType(VD->getType());
-  Address Addr = CGF.CGM.getOpenMPRuntime().getAddrOfDeclareTargetLink(VD);
-  return CGF.EmitLoadOfPointer(Addr, PtrTy->castAs<PointerType>());
-}
-
-Address
-CodeGenFunction::EmitLoadOfReference(LValue RefLVal,
-                                     LValueBaseInfo *PointeeBaseInfo,
-                                     TBAAAccessInfo *PointeeTBAAInfo) {
-  llvm::LoadInst *Load = Builder.CreateLoad(RefLVal.getAddress(),
-                                            RefLVal.isVolatile());
-  CGM.DecorateInstructionWithTBAA(Load, RefLVal.getTBAAInfo());
-
-  CharUnits Align = getNaturalTypeAlignment(RefLVal.getType()->getPointeeType(),
-                                            PointeeBaseInfo, PointeeTBAAInfo,
-                                            /* forPointeeType= */ true);
-  return Address(Load, Align);
-}
-
-LValue CodeGenFunction::EmitLoadOfReferenceLValue(LValue RefLVal) {
-  LValueBaseInfo PointeeBaseInfo;
-  TBAAAccessInfo PointeeTBAAInfo;
-  Address PointeeAddr = EmitLoadOfReference(RefLVal, &PointeeBaseInfo,
-                                            &PointeeTBAAInfo);
-  return MakeAddrLValue(PointeeAddr, RefLVal.getType()->getPointeeType(),
-                        PointeeBaseInfo, PointeeTBAAInfo);
-}
-
-Address CodeGenFunction::EmitLoadOfPointer(Address Ptr,
-                                           const PointerType *PtrTy,
-                                           LValueBaseInfo *BaseInfo,
-                                           TBAAAccessInfo *TBAAInfo) {
-  llvm::Value *Addr = Builder.CreateLoad(Ptr);
-  return Address(Addr, getNaturalTypeAlignment(PtrTy->getPointeeType(),
-                                               BaseInfo, TBAAInfo,
-                                               /*forPointeeType=*/true));
-}
-
-LValue CodeGenFunction::EmitLoadOfPointerLValue(Address PtrAddr,
-                                                const PointerType *PtrTy) {
-  LValueBaseInfo BaseInfo;
-  TBAAAccessInfo TBAAInfo;
-  Address Addr = EmitLoadOfPointer(PtrAddr, PtrTy, &BaseInfo, &TBAAInfo);
-  return MakeAddrLValue(Addr, PtrTy->getPointeeType(), BaseInfo, TBAAInfo);
-}
-
-static LValue EmitGlobalVarDeclLValue(CodeGenFunction &CGF,
-                                      const Expr *E, const VarDecl *VD) {
-  QualType T = E->getType();
-
-  // If it's thread_local, emit a call to its wrapper function instead.
-  if (VD->getTLSKind() == VarDecl::TLS_Dynamic &&
-      CGF.CGM.getCXXABI().usesThreadWrapperFunction())
-    return CGF.CGM.getCXXABI().EmitThreadLocalVarDeclLValue(CGF, VD, T);
-  // Check if the variable is marked as declare target with link clause in
-  // device codegen.
-  if (CGF.getLangOpts().OpenMPIsDevice) {
-    Address Addr = emitDeclTargetLinkVarDeclLValue(CGF, VD, T);
-    if (Addr.isValid())
-      return CGF.MakeAddrLValue(Addr, T, AlignmentSource::Decl);
-  }
-
-  llvm::Value *V = CGF.CGM.GetAddrOfGlobalVar(VD);
-  llvm::Type *RealVarTy = CGF.getTypes().ConvertTypeForMem(VD->getType());
-  V = EmitBitCastOfLValueToProperType(CGF, V, RealVarTy);
-  CharUnits Alignment = CGF.getContext().getDeclAlign(VD);
-  Address Addr(V, Alignment);
-  // Emit reference to the private copy of the variable if it is an OpenMP
-  // threadprivate variable.
-  if (CGF.getLangOpts().OpenMP && !CGF.getLangOpts().OpenMPSimd &&
-      VD->hasAttr<OMPThreadPrivateDeclAttr>()) {
-    return EmitThreadPrivateVarDeclLValue(CGF, VD, T, Addr, RealVarTy,
-                                          E->getExprLoc());
-  }
-  LValue LV = VD->getType()->isReferenceType() ?
-      CGF.EmitLoadOfReferenceLValue(Addr, VD->getType(),
-                                    AlignmentSource::Decl) :
-      CGF.MakeAddrLValue(Addr, T, AlignmentSource::Decl);
-  setObjCGCLValueClass(CGF.getContext(), E, LV);
-  return LV;
-}
-
-static llvm::Constant *EmitFunctionDeclPointer(CodeGenModule &CGM,
-                                               const FunctionDecl *FD) {
-  if (FD->hasAttr<WeakRefAttr>()) {
-    ConstantAddress aliasee = CGM.GetWeakRefReference(FD);
-    return aliasee.getPointer();
-  }
-
-  llvm::Constant *V = CGM.GetAddrOfFunction(FD);
-  if (!FD->hasPrototype()) {
-    if (const FunctionProtoType *Proto =
-            FD->getType()->getAs<FunctionProtoType>()) {
-      // Ugly case: for a K&R-style definition, the type of the definition
-      // isn't the same as the type of a use.  Correct for this with a
-      // bitcast.
-      QualType NoProtoType =
-          CGM.getContext().getFunctionNoProtoType(Proto->getReturnType());
-      NoProtoType = CGM.getContext().getPointerType(NoProtoType);
-      V = llvm::ConstantExpr::getBitCast(V,
-                                      CGM.getTypes().ConvertType(NoProtoType));
-    }
-  }
-  return V;
-}
-
-static LValue EmitFunctionDeclLValue(CodeGenFunction &CGF,
-                                     const Expr *E, const FunctionDecl *FD) {
-  llvm::Value *V = EmitFunctionDeclPointer(CGF.CGM, FD);
-  CharUnits Alignment = CGF.getContext().getDeclAlign(FD);
-  return CGF.MakeAddrLValue(V, E->getType(), Alignment,
-                            AlignmentSource::Decl);
-}
-
-static LValue EmitCapturedFieldLValue(CodeGenFunction &CGF, const FieldDecl *FD,
-                                      llvm::Value *ThisValue) {
-  QualType TagType = CGF.getContext().getTagDeclType(FD->getParent());
-  LValue LV = CGF.MakeNaturalAlignAddrLValue(ThisValue, TagType);
-  return CGF.EmitLValueForField(LV, FD);
-}
-
-/// Named Registers are named metadata pointing to the register name
-/// which will be read from/written to as an argument to the intrinsic
-/// @llvm.read/write_register.
-/// So far, only the name is being passed down, but other options such as
-/// register type, allocation type or even optimization options could be
-/// passed down via the metadata node.
-static LValue EmitGlobalNamedRegister(const VarDecl *VD, CodeGenModule &CGM) {
-  SmallString<64> Name("llvm.named.register.");
-  AsmLabelAttr *Asm = VD->getAttr<AsmLabelAttr>();
-  assert(Asm->getLabel().size() < 64-Name.size() &&
-      "Register name too big");
-  Name.append(Asm->getLabel());
-  llvm::NamedMDNode *M =
-    CGM.getModule().getOrInsertNamedMetadata(Name);
-  if (M->getNumOperands() == 0) {
-    llvm::MDString *Str = llvm::MDString::get(CGM.getLLVMContext(),
-                                              Asm->getLabel());
-    llvm::Metadata *Ops[] = {Str};
-    M->addOperand(llvm::MDNode::get(CGM.getLLVMContext(), Ops));
-  }
-
-  CharUnits Alignment = CGM.getContext().getDeclAlign(VD);
-
-  llvm::Value *Ptr =
-    llvm::MetadataAsValue::get(CGM.getLLVMContext(), M->getOperand(0));
-  return LValue::MakeGlobalReg(Address(Ptr, Alignment), VD->getType());
-}
-
-LValue CodeGenFunction::EmitDeclRefLValue(const DeclRefExpr *E) {
-  const NamedDecl *ND = E->getDecl();
-  QualType T = E->getType();
-
-  if (const auto *VD = dyn_cast<VarDecl>(ND)) {
-    // Global Named registers access via intrinsics only
-    if (VD->getStorageClass() == SC_Register &&
-        VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl())
-      return EmitGlobalNamedRegister(VD, CGM);
-
-    // A DeclRefExpr for a reference initialized by a constant expression can
-    // appear without being odr-used. Directly emit the constant initializer.
-    const Expr *Init = VD->getAnyInitializer(VD);
-    const auto *BD = dyn_cast_or_null<BlockDecl>(CurCodeDecl);
-    if (Init && !isa<ParmVarDecl>(VD) && VD->getType()->isReferenceType() &&
-        VD->isUsableInConstantExpressions(getContext()) &&
-        VD->checkInitIsICE() &&
-        // Do not emit if it is private OpenMP variable.
-        !(E->refersToEnclosingVariableOrCapture() &&
-          ((CapturedStmtInfo &&
-            (LocalDeclMap.count(VD->getCanonicalDecl()) ||
-             CapturedStmtInfo->lookup(VD->getCanonicalDecl()))) ||
-           LambdaCaptureFields.lookup(VD->getCanonicalDecl()) ||
-           (BD && BD->capturesVariable(VD))))) {
-      llvm::Constant *Val =
-        ConstantEmitter(*this).emitAbstract(E->getLocation(),
-                                            *VD->evaluateValue(),
-                                            VD->getType());
-      assert(Val && "failed to emit reference constant expression");
-      // FIXME: Eventually we will want to emit vector element references.
-
-      // Should we be using the alignment of the constant pointer we emitted?
-      CharUnits Alignment = getNaturalTypeAlignment(E->getType(),
-                                                    /* BaseInfo= */ nullptr,
-                                                    /* TBAAInfo= */ nullptr,
-                                                    /* forPointeeType= */ true);
-      return MakeAddrLValue(Address(Val, Alignment), T, AlignmentSource::Decl);
-    }
-
-    // Check for captured variables.
-    if (E->refersToEnclosingVariableOrCapture()) {
-      VD = VD->getCanonicalDecl();
-      if (auto *FD = LambdaCaptureFields.lookup(VD))
-        return EmitCapturedFieldLValue(*this, FD, CXXABIThisValue);
-      else if (CapturedStmtInfo) {
-        auto I = LocalDeclMap.find(VD);
-        if (I != LocalDeclMap.end()) {
-          if (VD->getType()->isReferenceType())
-            return EmitLoadOfReferenceLValue(I->second, VD->getType(),
-                                             AlignmentSource::Decl);
-          return MakeAddrLValue(I->second, T);
-        }
-        LValue CapLVal =
-            EmitCapturedFieldLValue(*this, CapturedStmtInfo->lookup(VD),
-                                    CapturedStmtInfo->getContextValue());
-        return MakeAddrLValue(
-            Address(CapLVal.getPointer(), getContext().getDeclAlign(VD)),
-            CapLVal.getType(), LValueBaseInfo(AlignmentSource::Decl),
-            CapLVal.getTBAAInfo());
-      }
-
-      assert(isa<BlockDecl>(CurCodeDecl));
-      Address addr = GetAddrOfBlockDecl(VD);
-      return MakeAddrLValue(addr, T, AlignmentSource::Decl);
-    }
-  }
-
-  // FIXME: We should be able to assert this for FunctionDecls as well!
-  // FIXME: We should be able to assert this for all DeclRefExprs, not just
-  // those with a valid source location.
-  assert((ND->isUsed(false) || !isa<VarDecl>(ND) ||
-          !E->getLocation().isValid()) &&
-         "Should not use decl without marking it used!");
-
-  if (ND->hasAttr<WeakRefAttr>()) {
-    const auto *VD = cast<ValueDecl>(ND);
-    ConstantAddress Aliasee = CGM.GetWeakRefReference(VD);
-    return MakeAddrLValue(Aliasee, T, AlignmentSource::Decl);
-  }
-
-  if (const auto *VD = dyn_cast<VarDecl>(ND)) {
-    // Check if this is a global variable.
-    if (VD->hasLinkage() || VD->isStaticDataMember())
-      return EmitGlobalVarDeclLValue(*this, E, VD);
-
-    Address addr = Address::invalid();
-
-    // The variable should generally be present in the local decl map.
-    auto iter = LocalDeclMap.find(VD);
-    if (iter != LocalDeclMap.end()) {
-      addr = iter->second;
-
-    // Otherwise, it might be static local we haven't emitted yet for
-    // some reason; most likely, because it's in an outer function.
-    } else if (VD->isStaticLocal()) {
-      addr = Address(CGM.getOrCreateStaticVarDecl(
-          *VD, CGM.getLLVMLinkageVarDefinition(VD, /*isConstant=*/false)),
-                     getContext().getDeclAlign(VD));
-
-    // No other cases for now.
-    } else {
-      llvm_unreachable("DeclRefExpr for Decl not entered in LocalDeclMap?");
-    }
-
-
-    // Check for OpenMP threadprivate variables.
-    if (getLangOpts().OpenMP && !getLangOpts().OpenMPSimd &&
-        VD->hasAttr<OMPThreadPrivateDeclAttr>()) {
-      return EmitThreadPrivateVarDeclLValue(
-          *this, VD, T, addr, getTypes().ConvertTypeForMem(VD->getType()),
-          E->getExprLoc());
-    }
-
-    // Drill into block byref variables.
-    bool isBlockByref = VD->isEscapingByref();
-    if (isBlockByref) {
-      addr = emitBlockByrefAddress(addr, VD);
-    }
-
-    // Drill into reference types.
-    LValue LV = VD->getType()->isReferenceType() ?
-        EmitLoadOfReferenceLValue(addr, VD->getType(), AlignmentSource::Decl) :
-        MakeAddrLValue(addr, T, AlignmentSource::Decl);
-
-    bool isLocalStorage = VD->hasLocalStorage();
-
-    bool NonGCable = isLocalStorage &&
-                     !VD->getType()->isReferenceType() &&
-                     !isBlockByref;
-    if (NonGCable) {
-      LV.getQuals().removeObjCGCAttr();
-      LV.setNonGC(true);
-    }
-
-    bool isImpreciseLifetime =
-      (isLocalStorage && !VD->hasAttr<ObjCPreciseLifetimeAttr>());
-    if (isImpreciseLifetime)
-      LV.setARCPreciseLifetime(ARCImpreciseLifetime);
-    setObjCGCLValueClass(getContext(), E, LV);
-    return LV;
-  }
-
-  if (const auto *FD = dyn_cast<FunctionDecl>(ND))
-    return EmitFunctionDeclLValue(*this, E, FD);
-
-  // FIXME: While we're emitting a binding from an enclosing scope, all other
-  // DeclRefExprs we see should be implicitly treated as if they also refer to
-  // an enclosing scope.
-  if (const auto *BD = dyn_cast<BindingDecl>(ND))
-    return EmitLValue(BD->getBinding());
-
-  llvm_unreachable("Unhandled DeclRefExpr");
-}
-
-LValue CodeGenFunction::EmitUnaryOpLValue(const UnaryOperator *E) {
-  // __extension__ doesn't affect lvalue-ness.
-  if (E->getOpcode() == UO_Extension)
-    return EmitLValue(E->getSubExpr());
-
-  QualType ExprTy = getContext().getCanonicalType(E->getSubExpr()->getType());
-  switch (E->getOpcode()) {
-  default: llvm_unreachable("Unknown unary operator lvalue!");
-  case UO_Deref: {
-    QualType T = E->getSubExpr()->getType()->getPointeeType();
-    assert(!T.isNull() && "CodeGenFunction::EmitUnaryOpLValue: Illegal type");
-
-    LValueBaseInfo BaseInfo;
-    TBAAAccessInfo TBAAInfo;
-    Address Addr = EmitPointerWithAlignment(E->getSubExpr(), &BaseInfo,
-                                            &TBAAInfo);
-    LValue LV = MakeAddrLValue(Addr, T, BaseInfo, TBAAInfo);
-    LV.getQuals().setAddressSpace(ExprTy.getAddressSpace());
-
-    // We should not generate __weak write barrier on indirect reference
-    // of a pointer to object; as in void foo (__weak id *param); *param = 0;
-    // But, we continue to generate __strong write barrier on indirect write
-    // into a pointer to object.
-    if (getLangOpts().ObjC &&
-        getLangOpts().getGC() != LangOptions::NonGC &&
-        LV.isObjCWeak())
-      LV.setNonGC(!E->isOBJCGCCandidate(getContext()));
-    return LV;
-  }
-  case UO_Real:
-  case UO_Imag: {
-    LValue LV = EmitLValue(E->getSubExpr());
-    assert(LV.isSimple() && "real/imag on non-ordinary l-value");
-
-    // __real is valid on scalars.  This is a faster way of testing that.
-    // __imag can only produce an rvalue on scalars.
-    if (E->getOpcode() == UO_Real &&
-        !LV.getAddress().getElementType()->isStructTy()) {
-      assert(E->getSubExpr()->getType()->isArithmeticType());
-      return LV;
-    }
-
-    QualType T = ExprTy->castAs<ComplexType>()->getElementType();
-
-    Address Component =
-      (E->getOpcode() == UO_Real
-         ? emitAddrOfRealComponent(LV.getAddress(), LV.getType())
-         : emitAddrOfImagComponent(LV.getAddress(), LV.getType()));
-    LValue ElemLV = MakeAddrLValue(Component, T, LV.getBaseInfo(),
-                                   CGM.getTBAAInfoForSubobject(LV, T));
-    ElemLV.getQuals().addQualifiers(LV.getQuals());
-    return ElemLV;
-  }
-  case UO_PreInc:
-  case UO_PreDec: {
-    LValue LV = EmitLValue(E->getSubExpr());
-    bool isInc = E->getOpcode() == UO_PreInc;
-
-    if (E->getType()->isAnyComplexType())
-      EmitComplexPrePostIncDec(E, LV, isInc, true/*isPre*/);
-    else
-      EmitScalarPrePostIncDec(E, LV, isInc, true/*isPre*/);
-    return LV;
-  }
-  }
-}
-
-LValue CodeGenFunction::EmitStringLiteralLValue(const StringLiteral *E) {
-  return MakeAddrLValue(CGM.GetAddrOfConstantStringFromLiteral(E),
-                        E->getType(), AlignmentSource::Decl);
-}
-
-LValue CodeGenFunction::EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E) {
-  return MakeAddrLValue(CGM.GetAddrOfConstantStringFromObjCEncode(E),
-                        E->getType(), AlignmentSource::Decl);
-}
-
-LValue CodeGenFunction::EmitPredefinedLValue(const PredefinedExpr *E) {
-  auto SL = E->getFunctionName();
-  assert(SL != nullptr && "No StringLiteral name in PredefinedExpr");
-  StringRef FnName = CurFn->getName();
-  if (FnName.startswith("\01"))
-    FnName = FnName.substr(1);
-  StringRef NameItems[] = {
-      PredefinedExpr::getIdentKindName(E->getIdentKind()), FnName};
-  std::string GVName = llvm::join(NameItems, NameItems + 2, ".");
-  if (auto *BD = dyn_cast_or_null<BlockDecl>(CurCodeDecl)) {
-    std::string Name = SL->getString();
-    if (!Name.empty()) {
-      unsigned Discriminator =
-          CGM.getCXXABI().getMangleContext().getBlockId(BD, true);
-      if (Discriminator)
-        Name += "_" + Twine(Discriminator + 1).str();
-      auto C = CGM.GetAddrOfConstantCString(Name, GVName.c_str());
-      return MakeAddrLValue(C, E->getType(), AlignmentSource::Decl);
-    } else {
-      auto C = CGM.GetAddrOfConstantCString(FnName, GVName.c_str());
-      return MakeAddrLValue(C, E->getType(), AlignmentSource::Decl);
-    }
-  }
-  auto C = CGM.GetAddrOfConstantStringFromLiteral(SL, GVName);
-  return MakeAddrLValue(C, E->getType(), AlignmentSource::Decl);
-}
-
-/// Emit a type description suitable for use by a runtime sanitizer library. The
-/// format of a type descriptor is
-///
-/// \code
-///   { i16 TypeKind, i16 TypeInfo }
-/// \endcode
-///
-/// followed by an array of i8 containing the type name. TypeKind is 0 for an
-/// integer, 1 for a floating point value, and -1 for anything else.
-llvm::Constant *CodeGenFunction::EmitCheckTypeDescriptor(QualType T) {
-  // Only emit each type's descriptor once.
-  if (llvm::Constant *C = CGM.getTypeDescriptorFromMap(T))
-    return C;
-
-  uint16_t TypeKind = -1;
-  uint16_t TypeInfo = 0;
-
-  if (T->isIntegerType()) {
-    TypeKind = 0;
-    TypeInfo = (llvm::Log2_32(getContext().getTypeSize(T)) << 1) |
-               (T->isSignedIntegerType() ? 1 : 0);
-  } else if (T->isFloatingType()) {
-    TypeKind = 1;
-    TypeInfo = getContext().getTypeSize(T);
-  }
-
-  // Format the type name as if for a diagnostic, including quotes and
-  // optionally an 'aka'.
-  SmallString<32> Buffer;
-  CGM.getDiags().ConvertArgToString(DiagnosticsEngine::ak_qualtype,
-                                    (intptr_t)T.getAsOpaquePtr(),
-                                    StringRef(), StringRef(), None, Buffer,
-                                    None);
-
-  llvm::Constant *Components[] = {
-    Builder.getInt16(TypeKind), Builder.getInt16(TypeInfo),
-    llvm::ConstantDataArray::getString(getLLVMContext(), Buffer)
-  };
-  llvm::Constant *Descriptor = llvm::ConstantStruct::getAnon(Components);
-
-  auto *GV = new llvm::GlobalVariable(
-      CGM.getModule(), Descriptor->getType(),
-      /*isConstant=*/true, llvm::GlobalVariable::PrivateLinkage, Descriptor);
-  GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
-  CGM.getSanitizerMetadata()->disableSanitizerForGlobal(GV);
-
-  // Remember the descriptor for this type.
-  CGM.setTypeDescriptorInMap(T, GV);
-
-  return GV;
-}
-
-llvm::Value *CodeGenFunction::EmitCheckValue(llvm::Value *V) {
-  llvm::Type *TargetTy = IntPtrTy;
-
-  if (V->getType() == TargetTy)
-    return V;
-
-  // Floating-point types which fit into intptr_t are bitcast to integers
-  // and then passed directly (after zero-extension, if necessary).
-  if (V->getType()->isFloatingPointTy()) {
-    unsigned Bits = V->getType()->getPrimitiveSizeInBits();
-    if (Bits <= TargetTy->getIntegerBitWidth())
-      V = Builder.CreateBitCast(V, llvm::Type::getIntNTy(getLLVMContext(),
-                                                         Bits));
-  }
-
-  // Integers which fit in intptr_t are zero-extended and passed directly.
-  if (V->getType()->isIntegerTy() &&
-      V->getType()->getIntegerBitWidth() <= TargetTy->getIntegerBitWidth())
-    return Builder.CreateZExt(V, TargetTy);
-
-  // Pointers are passed directly, everything else is passed by address.
-  if (!V->getType()->isPointerTy()) {
-    Address Ptr = CreateDefaultAlignTempAlloca(V->getType());
-    Builder.CreateStore(V, Ptr);
-    V = Ptr.getPointer();
-  }
-  return Builder.CreatePtrToInt(V, TargetTy);
-}
-
-/// Emit a representation of a SourceLocation for passing to a handler
-/// in a sanitizer runtime library. The format for this data is:
-/// \code
-///   struct SourceLocation {
-///     const char *Filename;
-///     int32_t Line, Column;
-///   };
-/// \endcode
-/// For an invalid SourceLocation, the Filename pointer is null.
-llvm::Constant *CodeGenFunction::EmitCheckSourceLocation(SourceLocation Loc) {
-  llvm::Constant *Filename;
-  int Line, Column;
-
-  PresumedLoc PLoc = getContext().getSourceManager().getPresumedLoc(Loc);
-  if (PLoc.isValid()) {
-    StringRef FilenameString = PLoc.getFilename();
-
-    int PathComponentsToStrip =
-        CGM.getCodeGenOpts().EmitCheckPathComponentsToStrip;
-    if (PathComponentsToStrip < 0) {
-      assert(PathComponentsToStrip != INT_MIN);
-      int PathComponentsToKeep = -PathComponentsToStrip;
-      auto I = llvm::sys::path::rbegin(FilenameString);
-      auto E = llvm::sys::path::rend(FilenameString);
-      while (I != E && --PathComponentsToKeep)
-        ++I;
-
-      FilenameString = FilenameString.substr(I - E);
-    } else if (PathComponentsToStrip > 0) {
-      auto I = llvm::sys::path::begin(FilenameString);
-      auto E = llvm::sys::path::end(FilenameString);
-      while (I != E && PathComponentsToStrip--)
-        ++I;
-
-      if (I != E)
-        FilenameString =
-            FilenameString.substr(I - llvm::sys::path::begin(FilenameString));
-      else
-        FilenameString = llvm::sys::path::filename(FilenameString);
-    }
-
-    auto FilenameGV = CGM.GetAddrOfConstantCString(FilenameString, ".src");
-    CGM.getSanitizerMetadata()->disableSanitizerForGlobal(
-                          cast<llvm::GlobalVariable>(FilenameGV.getPointer()));
-    Filename = FilenameGV.getPointer();
-    Line = PLoc.getLine();
-    Column = PLoc.getColumn();
-  } else {
-    Filename = llvm::Constant::getNullValue(Int8PtrTy);
-    Line = Column = 0;
-  }
-
-  llvm::Constant *Data[] = {Filename, Builder.getInt32(Line),
-                            Builder.getInt32(Column)};
-
-  return llvm::ConstantStruct::getAnon(Data);
-}
-
-namespace {
-/// Specify under what conditions this check can be recovered
-enum class CheckRecoverableKind {
-  /// Always terminate program execution if this check fails.
-  Unrecoverable,
-  /// Check supports recovering, runtime has both fatal (noreturn) and
-  /// non-fatal handlers for this check.
-  Recoverable,
-  /// Runtime conditionally aborts, always need to support recovery.
-  AlwaysRecoverable
-};
-}
-
-static CheckRecoverableKind getRecoverableKind(SanitizerMask Kind) {
-  assert(llvm::countPopulation(Kind) == 1);
-  switch (Kind) {
-  case SanitizerKind::Vptr:
-    return CheckRecoverableKind::AlwaysRecoverable;
-  case SanitizerKind::Return:
-  case SanitizerKind::Unreachable:
-    return CheckRecoverableKind::Unrecoverable;
-  default:
-    return CheckRecoverableKind::Recoverable;
-  }
-}
-
-namespace {
-struct SanitizerHandlerInfo {
-  char const *const Name;
-  unsigned Version;
-};
-}
-
-const SanitizerHandlerInfo SanitizerHandlers[] = {
-#define SANITIZER_CHECK(Enum, Name, Version) {#Name, Version},
-    LIST_SANITIZER_CHECKS
-#undef SANITIZER_CHECK
-};
-
-static void emitCheckHandlerCall(CodeGenFunction &CGF,
-                                 llvm::FunctionType *FnType,
-                                 ArrayRef<llvm::Value *> FnArgs,
-                                 SanitizerHandler CheckHandler,
-                                 CheckRecoverableKind RecoverKind, bool IsFatal,
-                                 llvm::BasicBlock *ContBB) {
-  assert(IsFatal || RecoverKind != CheckRecoverableKind::Unrecoverable);
-  Optional<ApplyDebugLocation> DL;
-  if (!CGF.Builder.getCurrentDebugLocation()) {
-    // Ensure that the call has at least an artificial debug location.
-    DL.emplace(CGF, SourceLocation());
-  }
-  bool NeedsAbortSuffix =
-      IsFatal && RecoverKind != CheckRecoverableKind::Unrecoverable;
-  bool MinimalRuntime = CGF.CGM.getCodeGenOpts().SanitizeMinimalRuntime;
-  const SanitizerHandlerInfo &CheckInfo = SanitizerHandlers[CheckHandler];
-  const StringRef CheckName = CheckInfo.Name;
-  std::string FnName = "__ubsan_handle_" + CheckName.str();
-  if (CheckInfo.Version && !MinimalRuntime)
-    FnName += "_v" + llvm::utostr(CheckInfo.Version);
-  if (MinimalRuntime)
-    FnName += "_minimal";
-  if (NeedsAbortSuffix)
-    FnName += "_abort";
-  bool MayReturn =
-      !IsFatal || RecoverKind == CheckRecoverableKind::AlwaysRecoverable;
-
-  llvm::AttrBuilder B;
-  if (!MayReturn) {
-    B.addAttribute(llvm::Attribute::NoReturn)
-        .addAttribute(llvm::Attribute::NoUnwind);
-  }
-  B.addAttribute(llvm::Attribute::UWTable);
-
-  llvm::Value *Fn = CGF.CGM.CreateRuntimeFunction(
-      FnType, FnName,
-      llvm::AttributeList::get(CGF.getLLVMContext(),
-                               llvm::AttributeList::FunctionIndex, B),
-      /*Local=*/true);
-  llvm::CallInst *HandlerCall = CGF.EmitNounwindRuntimeCall(Fn, FnArgs);
-  if (!MayReturn) {
-    HandlerCall->setDoesNotReturn();
-    CGF.Builder.CreateUnreachable();
-  } else {
-    CGF.Builder.CreateBr(ContBB);
-  }
-}
-
-void CodeGenFunction::EmitCheck(
-    ArrayRef<std::pair<llvm::Value *, SanitizerMask>> Checked,
-    SanitizerHandler CheckHandler, ArrayRef<llvm::Constant *> StaticArgs,
-    ArrayRef<llvm::Value *> DynamicArgs) {
-  assert(IsSanitizerScope);
-  assert(Checked.size() > 0);
-  assert(CheckHandler >= 0 &&
-         size_t(CheckHandler) < llvm::array_lengthof(SanitizerHandlers));
-  const StringRef CheckName = SanitizerHandlers[CheckHandler].Name;
-
-  llvm::Value *FatalCond = nullptr;
-  llvm::Value *RecoverableCond = nullptr;
-  llvm::Value *TrapCond = nullptr;
-  for (int i = 0, n = Checked.size(); i < n; ++i) {
-    llvm::Value *Check = Checked[i].first;
-    // -fsanitize-trap= overrides -fsanitize-recover=.
-    llvm::Value *&Cond =
-        CGM.getCodeGenOpts().SanitizeTrap.has(Checked[i].second)
-            ? TrapCond
-            : CGM.getCodeGenOpts().SanitizeRecover.has(Checked[i].second)
-                  ? RecoverableCond
-                  : FatalCond;
-    Cond = Cond ? Builder.CreateAnd(Cond, Check) : Check;
-  }
-
-  if (TrapCond)
-    EmitTrapCheck(TrapCond);
-  if (!FatalCond && !RecoverableCond)
-    return;
-
-  llvm::Value *JointCond;
-  if (FatalCond && RecoverableCond)
-    JointCond = Builder.CreateAnd(FatalCond, RecoverableCond);
-  else
-    JointCond = FatalCond ? FatalCond : RecoverableCond;
-  assert(JointCond);
-
-  CheckRecoverableKind RecoverKind = getRecoverableKind(Checked[0].second);
-  assert(SanOpts.has(Checked[0].second));
-#ifndef NDEBUG
-  for (int i = 1, n = Checked.size(); i < n; ++i) {
-    assert(RecoverKind == getRecoverableKind(Checked[i].second) &&
-           "All recoverable kinds in a single check must be same!");
-    assert(SanOpts.has(Checked[i].second));
-  }
-#endif
-
-  llvm::BasicBlock *Cont = createBasicBlock("cont");
-  llvm::BasicBlock *Handlers = createBasicBlock("handler." + CheckName);
-  llvm::Instruction *Branch = Builder.CreateCondBr(JointCond, Cont, Handlers);
-  // Give hint that we very much don't expect to execute the handler
-  // Value chosen to match UR_NONTAKEN_WEIGHT, see BranchProbabilityInfo.cpp
-  llvm::MDBuilder MDHelper(getLLVMContext());
-  llvm::MDNode *Node = MDHelper.createBranchWeights((1U << 20) - 1, 1);
-  Branch->setMetadata(llvm::LLVMContext::MD_prof, Node);
-  EmitBlock(Handlers);
-
-  // Handler functions take an i8* pointing to the (handler-specific) static
-  // information block, followed by a sequence of intptr_t arguments
-  // representing operand values.
-  SmallVector<llvm::Value *, 4> Args;
-  SmallVector<llvm::Type *, 4> ArgTypes;
-  if (!CGM.getCodeGenOpts().SanitizeMinimalRuntime) {
-    Args.reserve(DynamicArgs.size() + 1);
-    ArgTypes.reserve(DynamicArgs.size() + 1);
-
-    // Emit handler arguments and create handler function type.
-    if (!StaticArgs.empty()) {
-      llvm::Constant *Info = llvm::ConstantStruct::getAnon(StaticArgs);
-      auto *InfoPtr =
-          new llvm::GlobalVariable(CGM.getModule(), Info->getType(), false,
-                                   llvm::GlobalVariable::PrivateLinkage, Info);
-      InfoPtr->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
-      CGM.getSanitizerMetadata()->disableSanitizerForGlobal(InfoPtr);
-      Args.push_back(Builder.CreateBitCast(InfoPtr, Int8PtrTy));
-      ArgTypes.push_back(Int8PtrTy);
-    }
-
-    for (size_t i = 0, n = DynamicArgs.size(); i != n; ++i) {
-      Args.push_back(EmitCheckValue(DynamicArgs[i]));
-      ArgTypes.push_back(IntPtrTy);
-    }
-  }
-
-  llvm::FunctionType *FnType =
-    llvm::FunctionType::get(CGM.VoidTy, ArgTypes, false);
-
-  if (!FatalCond || !RecoverableCond) {
-    // Simple case: we need to generate a single handler call, either
-    // fatal, or non-fatal.
-    emitCheckHandlerCall(*this, FnType, Args, CheckHandler, RecoverKind,
-                         (FatalCond != nullptr), Cont);
-  } else {
-    // Emit two handler calls: first one for set of unrecoverable checks,
-    // another one for recoverable.
-    llvm::BasicBlock *NonFatalHandlerBB =
-        createBasicBlock("non_fatal." + CheckName);
-    llvm::BasicBlock *FatalHandlerBB = createBasicBlock("fatal." + CheckName);
-    Builder.CreateCondBr(FatalCond, NonFatalHandlerBB, FatalHandlerBB);
-    EmitBlock(FatalHandlerBB);
-    emitCheckHandlerCall(*this, FnType, Args, CheckHandler, RecoverKind, true,
-                         NonFatalHandlerBB);
-    EmitBlock(NonFatalHandlerBB);
-    emitCheckHandlerCall(*this, FnType, Args, CheckHandler, RecoverKind, false,
-                         Cont);
-  }
-
-  EmitBlock(Cont);
-}
-
-void CodeGenFunction::EmitCfiSlowPathCheck(
-    SanitizerMask Kind, llvm::Value *Cond, llvm::ConstantInt *TypeId,
-    llvm::Value *Ptr, ArrayRef<llvm::Constant *> StaticArgs) {
-  llvm::BasicBlock *Cont = createBasicBlock("cfi.cont");
-
-  llvm::BasicBlock *CheckBB = createBasicBlock("cfi.slowpath");
-  llvm::BranchInst *BI = Builder.CreateCondBr(Cond, Cont, CheckBB);
-
-  llvm::MDBuilder MDHelper(getLLVMContext());
-  llvm::MDNode *Node = MDHelper.createBranchWeights((1U << 20) - 1, 1);
-  BI->setMetadata(llvm::LLVMContext::MD_prof, Node);
-
-  EmitBlock(CheckBB);
-
-  bool WithDiag = !CGM.getCodeGenOpts().SanitizeTrap.has(Kind);
-
-  llvm::CallInst *CheckCall;
-  llvm::Constant *SlowPathFn;
-  if (WithDiag) {
-    llvm::Constant *Info = llvm::ConstantStruct::getAnon(StaticArgs);
-    auto *InfoPtr =
-        new llvm::GlobalVariable(CGM.getModule(), Info->getType(), false,
-                                 llvm::GlobalVariable::PrivateLinkage, Info);
-    InfoPtr->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
-    CGM.getSanitizerMetadata()->disableSanitizerForGlobal(InfoPtr);
-
-    SlowPathFn = CGM.getModule().getOrInsertFunction(
-        "__cfi_slowpath_diag",
-        llvm::FunctionType::get(VoidTy, {Int64Ty, Int8PtrTy, Int8PtrTy},
-                                false));
-    CheckCall = Builder.CreateCall(
-        SlowPathFn, {TypeId, Ptr, Builder.CreateBitCast(InfoPtr, Int8PtrTy)});
-  } else {
-    SlowPathFn = CGM.getModule().getOrInsertFunction(
-        "__cfi_slowpath",
-        llvm::FunctionType::get(VoidTy, {Int64Ty, Int8PtrTy}, false));
-    CheckCall = Builder.CreateCall(SlowPathFn, {TypeId, Ptr});
-  }
-
-  CGM.setDSOLocal(cast<llvm::GlobalValue>(SlowPathFn->stripPointerCasts()));
-  CheckCall->setDoesNotThrow();
-
-  EmitBlock(Cont);
-}
-
-// Emit a stub for __cfi_check function so that the linker knows about this
-// symbol in LTO mode.
-void CodeGenFunction::EmitCfiCheckStub() {
-  llvm::Module *M = &CGM.getModule();
-  auto &Ctx = M->getContext();
-  llvm::Function *F = llvm::Function::Create(
-      llvm::FunctionType::get(VoidTy, {Int64Ty, Int8PtrTy, Int8PtrTy}, false),
-      llvm::GlobalValue::WeakAnyLinkage, "__cfi_check", M);
-  CGM.setDSOLocal(F);
-  llvm::BasicBlock *BB = llvm::BasicBlock::Create(Ctx, "entry", F);
-  // FIXME: consider emitting an intrinsic call like
-  // call void @llvm.cfi_check(i64 %0, i8* %1, i8* %2)
-  // which can be lowered in CrossDSOCFI pass to the actual contents of
-  // __cfi_check. This would allow inlining of __cfi_check calls.
-  llvm::CallInst::Create(
-      llvm::Intrinsic::getDeclaration(M, llvm::Intrinsic::trap), "", BB);
-  llvm::ReturnInst::Create(Ctx, nullptr, BB);
-}
-
-// This function is basically a switch over the CFI failure kind, which is
-// extracted from CFICheckFailData (1st function argument). Each case is either
-// llvm.trap or a call to one of the two runtime handlers, based on
-// -fsanitize-trap and -fsanitize-recover settings.  Default case (invalid
-// failure kind) traps, but this should really never happen.  CFICheckFailData
-// can be nullptr if the calling module has -fsanitize-trap behavior for this
-// check kind; in this case __cfi_check_fail traps as well.
-void CodeGenFunction::EmitCfiCheckFail() {
-  SanitizerScope SanScope(this);
-  FunctionArgList Args;
-  ImplicitParamDecl ArgData(getContext(), getContext().VoidPtrTy,
-                            ImplicitParamDecl::Other);
-  ImplicitParamDecl ArgAddr(getContext(), getContext().VoidPtrTy,
-                            ImplicitParamDecl::Other);
-  Args.push_back(&ArgData);
-  Args.push_back(&ArgAddr);
-
-  const CGFunctionInfo &FI =
-    CGM.getTypes().arrangeBuiltinFunctionDeclaration(getContext().VoidTy, Args);
-
-  llvm::Function *F = llvm::Function::Create(
-      llvm::FunctionType::get(VoidTy, {VoidPtrTy, VoidPtrTy}, false),
-      llvm::GlobalValue::WeakODRLinkage, "__cfi_check_fail", &CGM.getModule());
-  F->setVisibility(llvm::GlobalValue::HiddenVisibility);
-
-  StartFunction(GlobalDecl(), CGM.getContext().VoidTy, F, FI, Args,
-                SourceLocation());
-
-  // This function should not be affected by blacklist. This function does
-  // not have a source location, but "src:*" would still apply. Revert any
-  // changes to SanOpts made in StartFunction.
-  SanOpts = CGM.getLangOpts().Sanitize;
-
-  llvm::Value *Data =
-      EmitLoadOfScalar(GetAddrOfLocalVar(&ArgData), /*Volatile=*/false,
-                       CGM.getContext().VoidPtrTy, ArgData.getLocation());
-  llvm::Value *Addr =
-      EmitLoadOfScalar(GetAddrOfLocalVar(&ArgAddr), /*Volatile=*/false,
-                       CGM.getContext().VoidPtrTy, ArgAddr.getLocation());
-
-  // Data == nullptr means the calling module has trap behaviour for this check.
-  llvm::Value *DataIsNotNullPtr =
-      Builder.CreateICmpNE(Data, llvm::ConstantPointerNull::get(Int8PtrTy));
-  EmitTrapCheck(DataIsNotNullPtr);
-
-  llvm::StructType *SourceLocationTy =
-      llvm::StructType::get(VoidPtrTy, Int32Ty, Int32Ty);
-  llvm::StructType *CfiCheckFailDataTy =
-      llvm::StructType::get(Int8Ty, SourceLocationTy, VoidPtrTy);
-
-  llvm::Value *V = Builder.CreateConstGEP2_32(
-      CfiCheckFailDataTy,
-      Builder.CreatePointerCast(Data, CfiCheckFailDataTy->getPointerTo(0)), 0,
-      0);
-  Address CheckKindAddr(V, getIntAlign());
-  llvm::Value *CheckKind = Builder.CreateLoad(CheckKindAddr);
-
-  llvm::Value *AllVtables = llvm::MetadataAsValue::get(
-      CGM.getLLVMContext(),
-      llvm::MDString::get(CGM.getLLVMContext(), "all-vtables"));
-  llvm::Value *ValidVtable = Builder.CreateZExt(
-      Builder.CreateCall(CGM.getIntrinsic(llvm::Intrinsic::type_test),
-                         {Addr, AllVtables}),
-      IntPtrTy);
-
-  const std::pair<int, SanitizerMask> CheckKinds[] = {
-      {CFITCK_VCall, SanitizerKind::CFIVCall},
-      {CFITCK_NVCall, SanitizerKind::CFINVCall},
-      {CFITCK_DerivedCast, SanitizerKind::CFIDerivedCast},
-      {CFITCK_UnrelatedCast, SanitizerKind::CFIUnrelatedCast},
-      {CFITCK_ICall, SanitizerKind::CFIICall}};
-
-  SmallVector<std::pair<llvm::Value *, SanitizerMask>, 5> Checks;
-  for (auto CheckKindMaskPair : CheckKinds) {
-    int Kind = CheckKindMaskPair.first;
-    SanitizerMask Mask = CheckKindMaskPair.second;
-    llvm::Value *Cond =
-        Builder.CreateICmpNE(CheckKind, llvm::ConstantInt::get(Int8Ty, Kind));
-    if (CGM.getLangOpts().Sanitize.has(Mask))
-      EmitCheck(std::make_pair(Cond, Mask), SanitizerHandler::CFICheckFail, {},
-                {Data, Addr, ValidVtable});
-    else
-      EmitTrapCheck(Cond);
-  }
-
-  FinishFunction();
-  // The only reference to this function will be created during LTO link.
-  // Make sure it survives until then.
-  CGM.addUsedGlobal(F);
-}
-
-void CodeGenFunction::EmitUnreachable(SourceLocation Loc) {
-  if (SanOpts.has(SanitizerKind::Unreachable)) {
-    SanitizerScope SanScope(this);
-    EmitCheck(std::make_pair(static_cast<llvm::Value *>(Builder.getFalse()),
-                             SanitizerKind::Unreachable),
-              SanitizerHandler::BuiltinUnreachable,
-              EmitCheckSourceLocation(Loc), None);
-  }
-  Builder.CreateUnreachable();
-}
-
-void CodeGenFunction::EmitTrapCheck(llvm::Value *Checked) {
-  llvm::BasicBlock *Cont = createBasicBlock("cont");
-
-  // If we're optimizing, collapse all calls to trap down to just one per
-  // function to save on code size.
-  if (!CGM.getCodeGenOpts().OptimizationLevel || !TrapBB) {
-    TrapBB = createBasicBlock("trap");
-    Builder.CreateCondBr(Checked, Cont, TrapBB);
-    EmitBlock(TrapBB);
-    llvm::CallInst *TrapCall = EmitTrapCall(llvm::Intrinsic::trap);
-    TrapCall->setDoesNotReturn();
-    TrapCall->setDoesNotThrow();
-    Builder.CreateUnreachable();
-  } else {
-    Builder.CreateCondBr(Checked, Cont, TrapBB);
-  }
-
-  EmitBlock(Cont);
-}
-
-llvm::CallInst *CodeGenFunction::EmitTrapCall(llvm::Intrinsic::ID IntrID) {
-  llvm::CallInst *TrapCall = Builder.CreateCall(CGM.getIntrinsic(IntrID));
-
-  if (!CGM.getCodeGenOpts().TrapFuncName.empty()) {
-    auto A = llvm::Attribute::get(getLLVMContext(), "trap-func-name",
-                                  CGM.getCodeGenOpts().TrapFuncName);
-    TrapCall->addAttribute(llvm::AttributeList::FunctionIndex, A);
-  }
-
-  return TrapCall;
-}
-
-Address CodeGenFunction::EmitArrayToPointerDecay(const Expr *E,
-                                                 LValueBaseInfo *BaseInfo,
-                                                 TBAAAccessInfo *TBAAInfo) {
-  assert(E->getType()->isArrayType() &&
-         "Array to pointer decay must have array source type!");
-
-  // Expressions of array type can't be bitfields or vector elements.
-  LValue LV = EmitLValue(E);
-  Address Addr = LV.getAddress();
-
-  // If the array type was an incomplete type, we need to make sure
-  // the decay ends up being the right type.
-  llvm::Type *NewTy = ConvertType(E->getType());
-  Addr = Builder.CreateElementBitCast(Addr, NewTy);
-
-  // Note that VLA pointers are always decayed, so we don't need to do
-  // anything here.
-  if (!E->getType()->isVariableArrayType()) {
-    assert(isa<llvm::ArrayType>(Addr.getElementType()) &&
-           "Expected pointer to array");
-    Addr = Builder.CreateStructGEP(Addr, 0, CharUnits::Zero(), "arraydecay");
-  }
-
-  // The result of this decay conversion points to an array element within the
-  // base lvalue. However, since TBAA currently does not support representing
-  // accesses to elements of member arrays, we conservatively represent accesses
-  // to the pointee object as if it had no any base lvalue specified.
-  // TODO: Support TBAA for member arrays.
-  QualType EltType = E->getType()->castAsArrayTypeUnsafe()->getElementType();
-  if (BaseInfo) *BaseInfo = LV.getBaseInfo();
-  if (TBAAInfo) *TBAAInfo = CGM.getTBAAAccessInfo(EltType);
-
-  return Builder.CreateElementBitCast(Addr, ConvertTypeForMem(EltType));
-}
-
-/// isSimpleArrayDecayOperand - If the specified expr is a simple decay from an
-/// array to pointer, return the array subexpression.
-static const Expr *isSimpleArrayDecayOperand(const Expr *E) {
-  // If this isn't just an array->pointer decay, bail out.
-  const auto *CE = dyn_cast<CastExpr>(E);
-  if (!CE || CE->getCastKind() != CK_ArrayToPointerDecay)
-    return nullptr;
-
-  // If this is a decay from variable width array, bail out.
-  const Expr *SubExpr = CE->getSubExpr();
-  if (SubExpr->getType()->isVariableArrayType())
-    return nullptr;
-
-  return SubExpr;
-}
-
-static llvm::Value *emitArraySubscriptGEP(CodeGenFunction &CGF,
-                                          llvm::Value *ptr,
-                                          ArrayRef<llvm::Value*> indices,
-                                          bool inbounds,
-                                          bool signedIndices,
-                                          SourceLocation loc,
-                                    const llvm::Twine &name = "arrayidx") {
-  if (inbounds) {
-    return CGF.EmitCheckedInBoundsGEP(ptr, indices, signedIndices,
-                                      CodeGenFunction::NotSubtraction, loc,
-                                      name);
-  } else {
-    return CGF.Builder.CreateGEP(ptr, indices, name);
-  }
-}
-
-static CharUnits getArrayElementAlign(CharUnits arrayAlign,
-                                      llvm::Value *idx,
-                                      CharUnits eltSize) {
-  // If we have a constant index, we can use the exact offset of the
-  // element we're accessing.
-  if (auto constantIdx = dyn_cast<llvm::ConstantInt>(idx)) {
-    CharUnits offset = constantIdx->getZExtValue() * eltSize;
-    return arrayAlign.alignmentAtOffset(offset);
-
-  // Otherwise, use the worst-case alignment for any element.
-  } else {
-    return arrayAlign.alignmentOfArrayElement(eltSize);
-  }
-}
-
-static QualType getFixedSizeElementType(const ASTContext &ctx,
-                                        const VariableArrayType *vla) {
-  QualType eltType;
-  do {
-    eltType = vla->getElementType();
-  } while ((vla = ctx.getAsVariableArrayType(eltType)));
-  return eltType;
-}
-
-static Address emitArraySubscriptGEP(CodeGenFunction &CGF, Address addr,
-                                     ArrayRef<llvm::Value *> indices,
-                                     QualType eltType, bool inbounds,
-                                     bool signedIndices, SourceLocation loc,
-                                     const llvm::Twine &name = "arrayidx") {
-  // All the indices except that last must be zero.
-#ifndef NDEBUG
-  for (auto idx : indices.drop_back())
-    assert(isa<llvm::ConstantInt>(idx) &&
-           cast<llvm::ConstantInt>(idx)->isZero());
-#endif
-
-  // Determine the element size of the statically-sized base.  This is
-  // the thing that the indices are expressed in terms of.
-  if (auto vla = CGF.getContext().getAsVariableArrayType(eltType)) {
-    eltType = getFixedSizeElementType(CGF.getContext(), vla);
-  }
-
-  // We can use that to compute the best alignment of the element.
-  CharUnits eltSize = CGF.getContext().getTypeSizeInChars(eltType);
-  CharUnits eltAlign =
-    getArrayElementAlign(addr.getAlignment(), indices.back(), eltSize);
-
-  llvm::Value *eltPtr = emitArraySubscriptGEP(
-      CGF, addr.getPointer(), indices, inbounds, signedIndices, loc, name);
-  return Address(eltPtr, eltAlign);
-}
-
-LValue CodeGenFunction::EmitArraySubscriptExpr(const ArraySubscriptExpr *E,
-                                               bool Accessed) {
-  // The index must always be an integer, which is not an aggregate.  Emit it
-  // in lexical order (this complexity is, sadly, required by C++17).
-  llvm::Value *IdxPre =
-      (E->getLHS() == E->getIdx()) ? EmitScalarExpr(E->getIdx()) : nullptr;
-  bool SignedIndices = false;
-  auto EmitIdxAfterBase = [&, IdxPre](bool Promote) -> llvm::Value * {
-    auto *Idx = IdxPre;
-    if (E->getLHS() != E->getIdx()) {
-      assert(E->getRHS() == E->getIdx() && "index was neither LHS nor RHS");
-      Idx = EmitScalarExpr(E->getIdx());
-    }
-
-    QualType IdxTy = E->getIdx()->getType();
-    bool IdxSigned = IdxTy->isSignedIntegerOrEnumerationType();
-    SignedIndices |= IdxSigned;
-
-    if (SanOpts.has(SanitizerKind::ArrayBounds))
-      EmitBoundsCheck(E, E->getBase(), Idx, IdxTy, Accessed);
-
-    // Extend or truncate the index type to 32 or 64-bits.
-    if (Promote && Idx->getType() != IntPtrTy)
-      Idx = Builder.CreateIntCast(Idx, IntPtrTy, IdxSigned, "idxprom");
-
-    return Idx;
-  };
-  IdxPre = nullptr;
-
-  // If the base is a vector type, then we are forming a vector element lvalue
-  // with this subscript.
-  if (E->getBase()->getType()->isVectorType() &&
-      !isa<ExtVectorElementExpr>(E->getBase())) {
-    // Emit the vector as an lvalue to get its address.
-    LValue LHS = EmitLValue(E->getBase());
-    auto *Idx = EmitIdxAfterBase(/*Promote*/false);
-    assert(LHS.isSimple() && "Can only subscript lvalue vectors here!");
-    return LValue::MakeVectorElt(LHS.getAddress(), Idx, E->getBase()->getType(),
-                                 LHS.getBaseInfo(), TBAAAccessInfo());
-  }
-
-  // All the other cases basically behave like simple offsetting.
-
-  // Handle the extvector case we ignored above.
-  if (isa<ExtVectorElementExpr>(E->getBase())) {
-    LValue LV = EmitLValue(E->getBase());
-    auto *Idx = EmitIdxAfterBase(/*Promote*/true);
-    Address Addr = EmitExtVectorElementLValue(LV);
-
-    QualType EltType = LV.getType()->castAs<VectorType>()->getElementType();
-    Addr = emitArraySubscriptGEP(*this, Addr, Idx, EltType, /*inbounds*/ true,
-                                 SignedIndices, E->getExprLoc());
-    return MakeAddrLValue(Addr, EltType, LV.getBaseInfo(),
-                          CGM.getTBAAInfoForSubobject(LV, EltType));
-  }
-
-  LValueBaseInfo EltBaseInfo;
-  TBAAAccessInfo EltTBAAInfo;
-  Address Addr = Address::invalid();
-  if (const VariableArrayType *vla =
-           getContext().getAsVariableArrayType(E->getType())) {
-    // The base must be a pointer, which is not an aggregate.  Emit
-    // it.  It needs to be emitted first in case it's what captures
-    // the VLA bounds.
-    Addr = EmitPointerWithAlignment(E->getBase(), &EltBaseInfo, &EltTBAAInfo);
-    auto *Idx = EmitIdxAfterBase(/*Promote*/true);
-
-    // The element count here is the total number of non-VLA elements.
-    llvm::Value *numElements = getVLASize(vla).NumElts;
-
-    // Effectively, the multiply by the VLA size is part of the GEP.
-    // GEP indexes are signed, and scaling an index isn't permitted to
-    // signed-overflow, so we use the same semantics for our explicit
-    // multiply.  We suppress this if overflow is not undefined behavior.
-    if (getLangOpts().isSignedOverflowDefined()) {
-      Idx = Builder.CreateMul(Idx, numElements);
-    } else {
-      Idx = Builder.CreateNSWMul(Idx, numElements);
-    }
-
-    Addr = emitArraySubscriptGEP(*this, Addr, Idx, vla->getElementType(),
-                                 !getLangOpts().isSignedOverflowDefined(),
-                                 SignedIndices, E->getExprLoc());
-
-  } else if (const ObjCObjectType *OIT = E->getType()->getAs<ObjCObjectType>()){
-    // Indexing over an interface, as in "NSString *P; P[4];"
-
-    // Emit the base pointer.
-    Addr = EmitPointerWithAlignment(E->getBase(), &EltBaseInfo, &EltTBAAInfo);
-    auto *Idx = EmitIdxAfterBase(/*Promote*/true);
-
-    CharUnits InterfaceSize = getContext().getTypeSizeInChars(OIT);
-    llvm::Value *InterfaceSizeVal =
-        llvm::ConstantInt::get(Idx->getType(), InterfaceSize.getQuantity());
-
-    llvm::Value *ScaledIdx = Builder.CreateMul(Idx, InterfaceSizeVal);
-
-    // We don't necessarily build correct LLVM struct types for ObjC
-    // interfaces, so we can't rely on GEP to do this scaling
-    // correctly, so we need to cast to i8*.  FIXME: is this actually
-    // true?  A lot of other things in the fragile ABI would break...
-    llvm::Type *OrigBaseTy = Addr.getType();
-    Addr = Builder.CreateElementBitCast(Addr, Int8Ty);
-
-    // Do the GEP.
-    CharUnits EltAlign =
-      getArrayElementAlign(Addr.getAlignment(), Idx, InterfaceSize);
-    llvm::Value *EltPtr =
-        emitArraySubscriptGEP(*this, Addr.getPointer(), ScaledIdx, false,
-                              SignedIndices, E->getExprLoc());
-    Addr = Address(EltPtr, EltAlign);
-
-    // Cast back.
-    Addr = Builder.CreateBitCast(Addr, OrigBaseTy);
-  } else if (const Expr *Array = isSimpleArrayDecayOperand(E->getBase())) {
-    // If this is A[i] where A is an array, the frontend will have decayed the
-    // base to be a ArrayToPointerDecay implicit cast.  While correct, it is
-    // inefficient at -O0 to emit a "gep A, 0, 0" when codegen'ing it, then a
-    // "gep x, i" here.  Emit one "gep A, 0, i".
-    assert(Array->getType()->isArrayType() &&
-           "Array to pointer decay must have array source type!");
-    LValue ArrayLV;
-    // For simple multidimensional array indexing, set the 'accessed' flag for
-    // better bounds-checking of the base expression.
-    if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(Array))
-      ArrayLV = EmitArraySubscriptExpr(ASE, /*Accessed*/ true);
-    else
-      ArrayLV = EmitLValue(Array);
-    auto *Idx = EmitIdxAfterBase(/*Promote*/true);
-
-    // Propagate the alignment from the array itself to the result.
-    Addr = emitArraySubscriptGEP(
-        *this, ArrayLV.getAddress(), {CGM.getSize(CharUnits::Zero()), Idx},
-        E->getType(), !getLangOpts().isSignedOverflowDefined(), SignedIndices,
-        E->getExprLoc());
-    EltBaseInfo = ArrayLV.getBaseInfo();
-    EltTBAAInfo = CGM.getTBAAInfoForSubobject(ArrayLV, E->getType());
-  } else {
-    // The base must be a pointer; emit it with an estimate of its alignment.
-    Addr = EmitPointerWithAlignment(E->getBase(), &EltBaseInfo, &EltTBAAInfo);
-    auto *Idx = EmitIdxAfterBase(/*Promote*/true);
-    Addr = emitArraySubscriptGEP(*this, Addr, Idx, E->getType(),
-                                 !getLangOpts().isSignedOverflowDefined(),
-                                 SignedIndices, E->getExprLoc());
-  }
-
-  LValue LV = MakeAddrLValue(Addr, E->getType(), EltBaseInfo, EltTBAAInfo);
-
-  if (getLangOpts().ObjC &&
-      getLangOpts().getGC() != LangOptions::NonGC) {
-    LV.setNonGC(!E->isOBJCGCCandidate(getContext()));
-    setObjCGCLValueClass(getContext(), E, LV);
-  }
-  return LV;
-}
-
-static Address emitOMPArraySectionBase(CodeGenFunction &CGF, const Expr *Base,
-                                       LValueBaseInfo &BaseInfo,
-                                       TBAAAccessInfo &TBAAInfo,
-                                       QualType BaseTy, QualType ElTy,
-                                       bool IsLowerBound) {
-  LValue BaseLVal;
-  if (auto *ASE = dyn_cast<OMPArraySectionExpr>(Base->IgnoreParenImpCasts())) {
-    BaseLVal = CGF.EmitOMPArraySectionExpr(ASE, IsLowerBound);
-    if (BaseTy->isArrayType()) {
-      Address Addr = BaseLVal.getAddress();
-      BaseInfo = BaseLVal.getBaseInfo();
-
-      // If the array type was an incomplete type, we need to make sure
-      // the decay ends up being the right type.
-      llvm::Type *NewTy = CGF.ConvertType(BaseTy);
-      Addr = CGF.Builder.CreateElementBitCast(Addr, NewTy);
-
-      // Note that VLA pointers are always decayed, so we don't need to do
-      // anything here.
-      if (!BaseTy->isVariableArrayType()) {
-        assert(isa<llvm::ArrayType>(Addr.getElementType()) &&
-               "Expected pointer to array");
-        Addr = CGF.Builder.CreateStructGEP(Addr, 0, CharUnits::Zero(),
-                                           "arraydecay");
-      }
-
-      return CGF.Builder.CreateElementBitCast(Addr,
-                                              CGF.ConvertTypeForMem(ElTy));
-    }
-    LValueBaseInfo TypeBaseInfo;
-    TBAAAccessInfo TypeTBAAInfo;
-    CharUnits Align = CGF.getNaturalTypeAlignment(ElTy, &TypeBaseInfo,
-                                                  &TypeTBAAInfo);
-    BaseInfo.mergeForCast(TypeBaseInfo);
-    TBAAInfo = CGF.CGM.mergeTBAAInfoForCast(TBAAInfo, TypeTBAAInfo);
-    return Address(CGF.Builder.CreateLoad(BaseLVal.getAddress()), Align);
-  }
-  return CGF.EmitPointerWithAlignment(Base, &BaseInfo, &TBAAInfo);
-}
-
-LValue CodeGenFunction::EmitOMPArraySectionExpr(const OMPArraySectionExpr *E,
-                                                bool IsLowerBound) {
-  QualType BaseTy = OMPArraySectionExpr::getBaseOriginalType(E->getBase());
-  QualType ResultExprTy;
-  if (auto *AT = getContext().getAsArrayType(BaseTy))
-    ResultExprTy = AT->getElementType();
-  else
-    ResultExprTy = BaseTy->getPointeeType();
-  llvm::Value *Idx = nullptr;
-  if (IsLowerBound || E->getColonLoc().isInvalid()) {
-    // Requesting lower bound or upper bound, but without provided length and
-    // without ':' symbol for the default length -> length = 1.
-    // Idx = LowerBound ?: 0;
-    if (auto *LowerBound = E->getLowerBound()) {
-      Idx = Builder.CreateIntCast(
-          EmitScalarExpr(LowerBound), IntPtrTy,
-          LowerBound->getType()->hasSignedIntegerRepresentation());
-    } else
-      Idx = llvm::ConstantInt::getNullValue(IntPtrTy);
-  } else {
-    // Try to emit length or lower bound as constant. If this is possible, 1
-    // is subtracted from constant length or lower bound. Otherwise, emit LLVM
-    // IR (LB + Len) - 1.
-    auto &C = CGM.getContext();
-    auto *Length = E->getLength();
-    llvm::APSInt ConstLength;
-    if (Length) {
-      // Idx = LowerBound + Length - 1;
-      if (Length->isIntegerConstantExpr(ConstLength, C)) {
-        ConstLength = ConstLength.zextOrTrunc(PointerWidthInBits);
-        Length = nullptr;
-      }
-      auto *LowerBound = E->getLowerBound();
-      llvm::APSInt ConstLowerBound(PointerWidthInBits, /*isUnsigned=*/false);
-      if (LowerBound && LowerBound->isIntegerConstantExpr(ConstLowerBound, C)) {
-        ConstLowerBound = ConstLowerBound.zextOrTrunc(PointerWidthInBits);
-        LowerBound = nullptr;
-      }
-      if (!Length)
-        --ConstLength;
-      else if (!LowerBound)
-        --ConstLowerBound;
-
-      if (Length || LowerBound) {
-        auto *LowerBoundVal =
-            LowerBound
-                ? Builder.CreateIntCast(
-                      EmitScalarExpr(LowerBound), IntPtrTy,
-                      LowerBound->getType()->hasSignedIntegerRepresentation())
-                : llvm::ConstantInt::get(IntPtrTy, ConstLowerBound);
-        auto *LengthVal =
-            Length
-                ? Builder.CreateIntCast(
-                      EmitScalarExpr(Length), IntPtrTy,
-                      Length->getType()->hasSignedIntegerRepresentation())
-                : llvm::ConstantInt::get(IntPtrTy, ConstLength);
-        Idx = Builder.CreateAdd(LowerBoundVal, LengthVal, "lb_add_len",
-                                /*HasNUW=*/false,
-                                !getLangOpts().isSignedOverflowDefined());
-        if (Length && LowerBound) {
-          Idx = Builder.CreateSub(
-              Idx, llvm::ConstantInt::get(IntPtrTy, /*V=*/1), "idx_sub_1",
-              /*HasNUW=*/false, !getLangOpts().isSignedOverflowDefined());
-        }
-      } else
-        Idx = llvm::ConstantInt::get(IntPtrTy, ConstLength + ConstLowerBound);
-    } else {
-      // Idx = ArraySize - 1;
-      QualType ArrayTy = BaseTy->isPointerType()
-                             ? E->getBase()->IgnoreParenImpCasts()->getType()
-                             : BaseTy;
-      if (auto *VAT = C.getAsVariableArrayType(ArrayTy)) {
-        Length = VAT->getSizeExpr();
-        if (Length->isIntegerConstantExpr(ConstLength, C))
-          Length = nullptr;
-      } else {
-        auto *CAT = C.getAsConstantArrayType(ArrayTy);
-        ConstLength = CAT->getSize();
-      }
-      if (Length) {
-        auto *LengthVal = Builder.CreateIntCast(
-            EmitScalarExpr(Length), IntPtrTy,
-            Length->getType()->hasSignedIntegerRepresentation());
-        Idx = Builder.CreateSub(
-            LengthVal, llvm::ConstantInt::get(IntPtrTy, /*V=*/1), "len_sub_1",
-            /*HasNUW=*/false, !getLangOpts().isSignedOverflowDefined());
-      } else {
-        ConstLength = ConstLength.zextOrTrunc(PointerWidthInBits);
-        --ConstLength;
-        Idx = llvm::ConstantInt::get(IntPtrTy, ConstLength);
-      }
-    }
-  }
-  assert(Idx);
-
-  Address EltPtr = Address::invalid();
-  LValueBaseInfo BaseInfo;
-  TBAAAccessInfo TBAAInfo;
-  if (auto *VLA = getContext().getAsVariableArrayType(ResultExprTy)) {
-    // The base must be a pointer, which is not an aggregate.  Emit
-    // it.  It needs to be emitted first in case it's what captures
-    // the VLA bounds.
-    Address Base =
-        emitOMPArraySectionBase(*this, E->getBase(), BaseInfo, TBAAInfo,
-                                BaseTy, VLA->getElementType(), IsLowerBound);
-    // The element count here is the total number of non-VLA elements.
-    llvm::Value *NumElements = getVLASize(VLA).NumElts;
-
-    // Effectively, the multiply by the VLA size is part of the GEP.
-    // GEP indexes are signed, and scaling an index isn't permitted to
-    // signed-overflow, so we use the same semantics for our explicit
-    // multiply.  We suppress this if overflow is not undefined behavior.
-    if (getLangOpts().isSignedOverflowDefined())
-      Idx = Builder.CreateMul(Idx, NumElements);
-    else
-      Idx = Builder.CreateNSWMul(Idx, NumElements);
-    EltPtr = emitArraySubscriptGEP(*this, Base, Idx, VLA->getElementType(),
-                                   !getLangOpts().isSignedOverflowDefined(),
-                                   /*SignedIndices=*/false, E->getExprLoc());
-  } else if (const Expr *Array = isSimpleArrayDecayOperand(E->getBase())) {
-    // If this is A[i] where A is an array, the frontend will have decayed the
-    // base to be a ArrayToPointerDecay implicit cast.  While correct, it is
-    // inefficient at -O0 to emit a "gep A, 0, 0" when codegen'ing it, then a
-    // "gep x, i" here.  Emit one "gep A, 0, i".
-    assert(Array->getType()->isArrayType() &&
-           "Array to pointer decay must have array source type!");
-    LValue ArrayLV;
-    // For simple multidimensional array indexing, set the 'accessed' flag for
-    // better bounds-checking of the base expression.
-    if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(Array))
-      ArrayLV = EmitArraySubscriptExpr(ASE, /*Accessed*/ true);
-    else
-      ArrayLV = EmitLValue(Array);
-
-    // Propagate the alignment from the array itself to the result.
-    EltPtr = emitArraySubscriptGEP(
-        *this, ArrayLV.getAddress(), {CGM.getSize(CharUnits::Zero()), Idx},
-        ResultExprTy, !getLangOpts().isSignedOverflowDefined(),
-        /*SignedIndices=*/false, E->getExprLoc());
-    BaseInfo = ArrayLV.getBaseInfo();
-    TBAAInfo = CGM.getTBAAInfoForSubobject(ArrayLV, ResultExprTy);
-  } else {
-    Address Base = emitOMPArraySectionBase(*this, E->getBase(), BaseInfo,
-                                           TBAAInfo, BaseTy, ResultExprTy,
-                                           IsLowerBound);
-    EltPtr = emitArraySubscriptGEP(*this, Base, Idx, ResultExprTy,
-                                   !getLangOpts().isSignedOverflowDefined(),
-                                   /*SignedIndices=*/false, E->getExprLoc());
-  }
-
-  return MakeAddrLValue(EltPtr, ResultExprTy, BaseInfo, TBAAInfo);
-}
-
-LValue CodeGenFunction::
-EmitExtVectorElementExpr(const ExtVectorElementExpr *E) {
-  // Emit the base vector as an l-value.
-  LValue Base;
-
-  // ExtVectorElementExpr's base can either be a vector or pointer to vector.
-  if (E->isArrow()) {
-    // If it is a pointer to a vector, emit the address and form an lvalue with
-    // it.
-    LValueBaseInfo BaseInfo;
-    TBAAAccessInfo TBAAInfo;
-    Address Ptr = EmitPointerWithAlignment(E->getBase(), &BaseInfo, &TBAAInfo);
-    const PointerType *PT = E->getBase()->getType()->getAs<PointerType>();
-    Base = MakeAddrLValue(Ptr, PT->getPointeeType(), BaseInfo, TBAAInfo);
-    Base.getQuals().removeObjCGCAttr();
-  } else if (E->getBase()->isGLValue()) {
-    // Otherwise, if the base is an lvalue ( as in the case of foo.x.x),
-    // emit the base as an lvalue.
-    assert(E->getBase()->getType()->isVectorType());
-    Base = EmitLValue(E->getBase());
-  } else {
-    // Otherwise, the base is a normal rvalue (as in (V+V).x), emit it as such.
-    assert(E->getBase()->getType()->isVectorType() &&
-           "Result must be a vector");
-    llvm::Value *Vec = EmitScalarExpr(E->getBase());
-
-    // Store the vector to memory (because LValue wants an address).
-    Address VecMem = CreateMemTemp(E->getBase()->getType());
-    Builder.CreateStore(Vec, VecMem);
-    Base = MakeAddrLValue(VecMem, E->getBase()->getType(),
-                          AlignmentSource::Decl);
-  }
-
-  QualType type =
-    E->getType().withCVRQualifiers(Base.getQuals().getCVRQualifiers());
-
-  // Encode the element access list into a vector of unsigned indices.
-  SmallVector<uint32_t, 4> Indices;
-  E->getEncodedElementAccess(Indices);
-
-  if (Base.isSimple()) {
-    llvm::Constant *CV =
-        llvm::ConstantDataVector::get(getLLVMContext(), Indices);
-    return LValue::MakeExtVectorElt(Base.getAddress(), CV, type,
-                                    Base.getBaseInfo(), TBAAAccessInfo());
-  }
-  assert(Base.isExtVectorElt() && "Can only subscript lvalue vec elts here!");
-
-  llvm::Constant *BaseElts = Base.getExtVectorElts();
-  SmallVector<llvm::Constant *, 4> CElts;
-
-  for (unsigned i = 0, e = Indices.size(); i != e; ++i)
-    CElts.push_back(BaseElts->getAggregateElement(Indices[i]));
-  llvm::Constant *CV = llvm::ConstantVector::get(CElts);
-  return LValue::MakeExtVectorElt(Base.getExtVectorAddress(), CV, type,
-                                  Base.getBaseInfo(), TBAAAccessInfo());
-}
-
-LValue CodeGenFunction::EmitMemberExpr(const MemberExpr *E) {
-  if (DeclRefExpr *DRE = tryToConvertMemberExprToDeclRefExpr(*this, E)) {
-    EmitIgnoredExpr(E->getBase());
-    return EmitDeclRefLValue(DRE);
-  }
-
-  Expr *BaseExpr = E->getBase();
-  // If this is s.x, emit s as an lvalue.  If it is s->x, emit s as a scalar.
-  LValue BaseLV;
-  if (E->isArrow()) {
-    LValueBaseInfo BaseInfo;
-    TBAAAccessInfo TBAAInfo;
-    Address Addr = EmitPointerWithAlignment(BaseExpr, &BaseInfo, &TBAAInfo);
-    QualType PtrTy = BaseExpr->getType()->getPointeeType();
-    SanitizerSet SkippedChecks;
-    bool IsBaseCXXThis = IsWrappedCXXThis(BaseExpr);
-    if (IsBaseCXXThis)
-      SkippedChecks.set(SanitizerKind::Alignment, true);
-    if (IsBaseCXXThis || isa<DeclRefExpr>(BaseExpr))
-      SkippedChecks.set(SanitizerKind::Null, true);
-    EmitTypeCheck(TCK_MemberAccess, E->getExprLoc(), Addr.getPointer(), PtrTy,
-                  /*Alignment=*/CharUnits::Zero(), SkippedChecks);
-    BaseLV = MakeAddrLValue(Addr, PtrTy, BaseInfo, TBAAInfo);
-  } else
-    BaseLV = EmitCheckedLValue(BaseExpr, TCK_MemberAccess);
-
-  NamedDecl *ND = E->getMemberDecl();
-  if (auto *Field = dyn_cast<FieldDecl>(ND)) {
-    LValue LV = EmitLValueForField(BaseLV, Field);
-    setObjCGCLValueClass(getContext(), E, LV);
-    return LV;
-  }
-
-  if (const auto *FD = dyn_cast<FunctionDecl>(ND))
-    return EmitFunctionDeclLValue(*this, E, FD);
-
-  llvm_unreachable("Unhandled member declaration!");
-}
-
-/// Given that we are currently emitting a lambda, emit an l-value for
-/// one of its members.
-LValue CodeGenFunction::EmitLValueForLambdaField(const FieldDecl *Field) {
-  assert(cast<CXXMethodDecl>(CurCodeDecl)->getParent()->isLambda());
-  assert(cast<CXXMethodDecl>(CurCodeDecl)->getParent() == Field->getParent());
-  QualType LambdaTagType =
-    getContext().getTagDeclType(Field->getParent());
-  LValue LambdaLV = MakeNaturalAlignAddrLValue(CXXABIThisValue, LambdaTagType);
-  return EmitLValueForField(LambdaLV, Field);
-}
-
-/// Drill down to the storage of a field without walking into
-/// reference types.
-///
-/// The resulting address doesn't necessarily have the right type.
-static Address emitAddrOfFieldStorage(CodeGenFunction &CGF, Address base,
-                                      const FieldDecl *field) {
-  const RecordDecl *rec = field->getParent();
-
-  unsigned idx =
-    CGF.CGM.getTypes().getCGRecordLayout(rec).getLLVMFieldNo(field);
-
-  CharUnits offset;
-  // Adjust the alignment down to the given offset.
-  // As a special case, if the LLVM field index is 0, we know that this
-  // is zero.
-  assert((idx != 0 || CGF.getContext().getASTRecordLayout(rec)
-                         .getFieldOffset(field->getFieldIndex()) == 0) &&
-         "LLVM field at index zero had non-zero offset?");
-  if (idx != 0) {
-    auto &recLayout = CGF.getContext().getASTRecordLayout(rec);
-    auto offsetInBits = recLayout.getFieldOffset(field->getFieldIndex());
-    offset = CGF.getContext().toCharUnitsFromBits(offsetInBits);
-  }
-
-  return CGF.Builder.CreateStructGEP(base, idx, offset, field->getName());
-}
-
-static bool hasAnyVptr(const QualType Type, const ASTContext &Context) {
-  const auto *RD = Type.getTypePtr()->getAsCXXRecordDecl();
-  if (!RD)
-    return false;
-
-  if (RD->isDynamicClass())
-    return true;
-
-  for (const auto &Base : RD->bases())
-    if (hasAnyVptr(Base.getType(), Context))
-      return true;
-
-  for (const FieldDecl *Field : RD->fields())
-    if (hasAnyVptr(Field->getType(), Context))
-      return true;
-
-  return false;
-}
-
-LValue CodeGenFunction::EmitLValueForField(LValue base,
-                                           const FieldDecl *field) {
-  LValueBaseInfo BaseInfo = base.getBaseInfo();
-
-  if (field->isBitField()) {
-    const CGRecordLayout &RL =
-      CGM.getTypes().getCGRecordLayout(field->getParent());
-    const CGBitFieldInfo &Info = RL.getBitFieldInfo(field);
-    Address Addr = base.getAddress();
-    unsigned Idx = RL.getLLVMFieldNo(field);
-    if (Idx != 0)
-      // For structs, we GEP to the field that the record layout suggests.
-      Addr = Builder.CreateStructGEP(Addr, Idx, Info.StorageOffset,
-                                     field->getName());
-    // Get the access type.
-    llvm::Type *FieldIntTy =
-      llvm::Type::getIntNTy(getLLVMContext(), Info.StorageSize);
-    if (Addr.getElementType() != FieldIntTy)
-      Addr = Builder.CreateElementBitCast(Addr, FieldIntTy);
-
-    QualType fieldType =
-      field->getType().withCVRQualifiers(base.getVRQualifiers());
-    // TODO: Support TBAA for bit fields.
-    LValueBaseInfo FieldBaseInfo(BaseInfo.getAlignmentSource());
-    return LValue::MakeBitfield(Addr, Info, fieldType, FieldBaseInfo,
-                                TBAAAccessInfo());
-  }
-
-  // Fields of may-alias structures are may-alias themselves.
-  // FIXME: this should get propagated down through anonymous structs
-  // and unions.
-  QualType FieldType = field->getType();
-  const RecordDecl *rec = field->getParent();
-  AlignmentSource BaseAlignSource = BaseInfo.getAlignmentSource();
-  LValueBaseInfo FieldBaseInfo(getFieldAlignmentSource(BaseAlignSource));
-  TBAAAccessInfo FieldTBAAInfo;
-  if (base.getTBAAInfo().isMayAlias() ||
-          rec->hasAttr<MayAliasAttr>() || FieldType->isVectorType()) {
-    FieldTBAAInfo = TBAAAccessInfo::getMayAliasInfo();
-  } else if (rec->isUnion()) {
-    // TODO: Support TBAA for unions.
-    FieldTBAAInfo = TBAAAccessInfo::getMayAliasInfo();
-  } else {
-    // If no base type been assigned for the base access, then try to generate
-    // one for this base lvalue.
-    FieldTBAAInfo = base.getTBAAInfo();
-    if (!FieldTBAAInfo.BaseType) {
-        FieldTBAAInfo.BaseType = CGM.getTBAABaseTypeInfo(base.getType());
-        assert(!FieldTBAAInfo.Offset &&
-               "Nonzero offset for an access with no base type!");
-    }
-
-    // Adjust offset to be relative to the base type.
-    const ASTRecordLayout &Layout =
-        getContext().getASTRecordLayout(field->getParent());
-    unsigned CharWidth = getContext().getCharWidth();
-    if (FieldTBAAInfo.BaseType)
-      FieldTBAAInfo.Offset +=
-          Layout.getFieldOffset(field->getFieldIndex()) / CharWidth;
-
-    // Update the final access type and size.
-    FieldTBAAInfo.AccessType = CGM.getTBAATypeInfo(FieldType);
-    FieldTBAAInfo.Size =
-        getContext().getTypeSizeInChars(FieldType).getQuantity();
-  }
-
-  Address addr = base.getAddress();
-  if (auto *ClassDef = dyn_cast<CXXRecordDecl>(rec)) {
-    if (CGM.getCodeGenOpts().StrictVTablePointers &&
-        ClassDef->isDynamicClass()) {
-      // Getting to any field of dynamic object requires stripping dynamic
-      // information provided by invariant.group.  This is because accessing
-      // fields may leak the real address of dynamic object, which could result
-      // in miscompilation when leaked pointer would be compared.
-      auto *stripped = Builder.CreateStripInvariantGroup(addr.getPointer());
-      addr = Address(stripped, addr.getAlignment());
-    }
-  }
-
-  unsigned RecordCVR = base.getVRQualifiers();
-  if (rec->isUnion()) {
-    // For unions, there is no pointer adjustment.
-    assert(!FieldType->isReferenceType() && "union has reference member");
-    if (CGM.getCodeGenOpts().StrictVTablePointers &&
-        hasAnyVptr(FieldType, getContext()))
-      // Because unions can easily skip invariant.barriers, we need to add
-      // a barrier every time CXXRecord field with vptr is referenced.
-      addr = Address(Builder.CreateLaunderInvariantGroup(addr.getPointer()),
-                     addr.getAlignment());
-  } else {
-    // For structs, we GEP to the field that the record layout suggests.
-    addr = emitAddrOfFieldStorage(*this, addr, field);
-
-    // If this is a reference field, load the reference right now.
-    if (FieldType->isReferenceType()) {
-      LValue RefLVal = MakeAddrLValue(addr, FieldType, FieldBaseInfo,
-                                      FieldTBAAInfo);
-      if (RecordCVR & Qualifiers::Volatile)
-        RefLVal.getQuals().addVolatile();
-      addr = EmitLoadOfReference(RefLVal, &FieldBaseInfo, &FieldTBAAInfo);
-
-      // Qualifiers on the struct don't apply to the referencee.
-      RecordCVR = 0;
-      FieldType = FieldType->getPointeeType();
-    }
-  }
-
-  // Make sure that the address is pointing to the right type.  This is critical
-  // for both unions and structs.  A union needs a bitcast, a struct element
-  // will need a bitcast if the LLVM type laid out doesn't match the desired
-  // type.
-  addr = Builder.CreateElementBitCast(
-      addr, CGM.getTypes().ConvertTypeForMem(FieldType), field->getName());
-
-  if (field->hasAttr<AnnotateAttr>())
-    addr = EmitFieldAnnotations(field, addr);
-
-  LValue LV = MakeAddrLValue(addr, FieldType, FieldBaseInfo, FieldTBAAInfo);
-  LV.getQuals().addCVRQualifiers(RecordCVR);
-
-  // __weak attribute on a field is ignored.
-  if (LV.getQuals().getObjCGCAttr() == Qualifiers::Weak)
-    LV.getQuals().removeObjCGCAttr();
-
-  return LV;
-}
-
-LValue
-CodeGenFunction::EmitLValueForFieldInitialization(LValue Base,
-                                                  const FieldDecl *Field) {
-  QualType FieldType = Field->getType();
-
-  if (!FieldType->isReferenceType())
-    return EmitLValueForField(Base, Field);
-
-  Address V = emitAddrOfFieldStorage(*this, Base.getAddress(), Field);
-
-  // Make sure that the address is pointing to the right type.
-  llvm::Type *llvmType = ConvertTypeForMem(FieldType);
-  V = Builder.CreateElementBitCast(V, llvmType, Field->getName());
-
-  // TODO: Generate TBAA information that describes this access as a structure
-  // member access and not just an access to an object of the field's type. This
-  // should be similar to what we do in EmitLValueForField().
-  LValueBaseInfo BaseInfo = Base.getBaseInfo();
-  AlignmentSource FieldAlignSource = BaseInfo.getAlignmentSource();
-  LValueBaseInfo FieldBaseInfo(getFieldAlignmentSource(FieldAlignSource));
-  return MakeAddrLValue(V, FieldType, FieldBaseInfo,
-                        CGM.getTBAAInfoForSubobject(Base, FieldType));
-}
-
-LValue CodeGenFunction::EmitCompoundLiteralLValue(const CompoundLiteralExpr *E){
-  if (E->isFileScope()) {
-    ConstantAddress GlobalPtr = CGM.GetAddrOfConstantCompoundLiteral(E);
-    return MakeAddrLValue(GlobalPtr, E->getType(), AlignmentSource::Decl);
-  }
-  if (E->getType()->isVariablyModifiedType())
-    // make sure to emit the VLA size.
-    EmitVariablyModifiedType(E->getType());
-
-  Address DeclPtr = CreateMemTemp(E->getType(), ".compoundliteral");
-  const Expr *InitExpr = E->getInitializer();
-  LValue Result = MakeAddrLValue(DeclPtr, E->getType(), AlignmentSource::Decl);
-
-  EmitAnyExprToMem(InitExpr, DeclPtr, E->getType().getQualifiers(),
-                   /*Init*/ true);
-
-  return Result;
-}
-
-LValue CodeGenFunction::EmitInitListLValue(const InitListExpr *E) {
-  if (!E->isGLValue())
-    // Initializing an aggregate temporary in C++11: T{...}.
-    return EmitAggExprToLValue(E);
-
-  // An lvalue initializer list must be initializing a reference.
-  assert(E->isTransparent() && "non-transparent glvalue init list");
-  return EmitLValue(E->getInit(0));
-}
-
-/// Emit the operand of a glvalue conditional operator. This is either a glvalue
-/// or a (possibly-parenthesized) throw-expression. If this is a throw, no
-/// LValue is returned and the current block has been terminated.
-static Optional<LValue> EmitLValueOrThrowExpression(CodeGenFunction &CGF,
-                                                    const Expr *Operand) {
-  if (auto *ThrowExpr = dyn_cast<CXXThrowExpr>(Operand->IgnoreParens())) {
-    CGF.EmitCXXThrowExpr(ThrowExpr, /*KeepInsertionPoint*/false);
-    return None;
-  }
-
-  return CGF.EmitLValue(Operand);
-}
-
-LValue CodeGenFunction::
-EmitConditionalOperatorLValue(const AbstractConditionalOperator *expr) {
-  if (!expr->isGLValue()) {
-    // ?: here should be an aggregate.
-    assert(hasAggregateEvaluationKind(expr->getType()) &&
-           "Unexpected conditional operator!");
-    return EmitAggExprToLValue(expr);
-  }
-
-  OpaqueValueMapping binding(*this, expr);
-
-  const Expr *condExpr = expr->getCond();
-  bool CondExprBool;
-  if (ConstantFoldsToSimpleInteger(condExpr, CondExprBool)) {
-    const Expr *live = expr->getTrueExpr(), *dead = expr->getFalseExpr();
-    if (!CondExprBool) std::swap(live, dead);
-
-    if (!ContainsLabel(dead)) {
-      // If the true case is live, we need to track its region.
-      if (CondExprBool)
-        incrementProfileCounter(expr);
-      return EmitLValue(live);
-    }
-  }
-
-  llvm::BasicBlock *lhsBlock = createBasicBlock("cond.true");
-  llvm::BasicBlock *rhsBlock = createBasicBlock("cond.false");
-  llvm::BasicBlock *contBlock = createBasicBlock("cond.end");
-
-  ConditionalEvaluation eval(*this);
-  EmitBranchOnBoolExpr(condExpr, lhsBlock, rhsBlock, getProfileCount(expr));
-
-  // Any temporaries created here are conditional.
-  EmitBlock(lhsBlock);
-  incrementProfileCounter(expr);
-  eval.begin(*this);
-  Optional<LValue> lhs =
-      EmitLValueOrThrowExpression(*this, expr->getTrueExpr());
-  eval.end(*this);
-
-  if (lhs && !lhs->isSimple())
-    return EmitUnsupportedLValue(expr, "conditional operator");
-
-  lhsBlock = Builder.GetInsertBlock();
-  if (lhs)
-    Builder.CreateBr(contBlock);
-
-  // Any temporaries created here are conditional.
-  EmitBlock(rhsBlock);
-  eval.begin(*this);
-  Optional<LValue> rhs =
-      EmitLValueOrThrowExpression(*this, expr->getFalseExpr());
-  eval.end(*this);
-  if (rhs && !rhs->isSimple())
-    return EmitUnsupportedLValue(expr, "conditional operator");
-  rhsBlock = Builder.GetInsertBlock();
-
-  EmitBlock(contBlock);
-
-  if (lhs && rhs) {
-    llvm::PHINode *phi = Builder.CreatePHI(lhs->getPointer()->getType(),
-                                           2, "cond-lvalue");
-    phi->addIncoming(lhs->getPointer(), lhsBlock);
-    phi->addIncoming(rhs->getPointer(), rhsBlock);
-    Address result(phi, std::min(lhs->getAlignment(), rhs->getAlignment()));
-    AlignmentSource alignSource =
-      std::max(lhs->getBaseInfo().getAlignmentSource(),
-               rhs->getBaseInfo().getAlignmentSource());
-    TBAAAccessInfo TBAAInfo = CGM.mergeTBAAInfoForConditionalOperator(
-        lhs->getTBAAInfo(), rhs->getTBAAInfo());
-    return MakeAddrLValue(result, expr->getType(), LValueBaseInfo(alignSource),
-                          TBAAInfo);
-  } else {
-    assert((lhs || rhs) &&
-           "both operands of glvalue conditional are throw-expressions?");
-    return lhs ? *lhs : *rhs;
-  }
-}
-
-/// EmitCastLValue - Casts are never lvalues unless that cast is to a reference
-/// type. If the cast is to a reference, we can have the usual lvalue result,
-/// otherwise if a cast is needed by the code generator in an lvalue context,
-/// then it must mean that we need the address of an aggregate in order to
-/// access one of its members.  This can happen for all the reasons that casts
-/// are permitted with aggregate result, including noop aggregate casts, and
-/// cast from scalar to union.
-LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
-  switch (E->getCastKind()) {
-  case CK_ToVoid:
-  case CK_BitCast:
-  case CK_ArrayToPointerDecay:
-  case CK_FunctionToPointerDecay:
-  case CK_NullToMemberPointer:
-  case CK_NullToPointer:
-  case CK_IntegralToPointer:
-  case CK_PointerToIntegral:
-  case CK_PointerToBoolean:
-  case CK_VectorSplat:
-  case CK_IntegralCast:
-  case CK_BooleanToSignedIntegral:
-  case CK_IntegralToBoolean:
-  case CK_IntegralToFloating:
-  case CK_FloatingToIntegral:
-  case CK_FloatingToBoolean:
-  case CK_FloatingCast:
-  case CK_FloatingRealToComplex:
-  case CK_FloatingComplexToReal:
-  case CK_FloatingComplexToBoolean:
-  case CK_FloatingComplexCast:
-  case CK_FloatingComplexToIntegralComplex:
-  case CK_IntegralRealToComplex:
-  case CK_IntegralComplexToReal:
-  case CK_IntegralComplexToBoolean:
-  case CK_IntegralComplexCast:
-  case CK_IntegralComplexToFloatingComplex:
-  case CK_DerivedToBaseMemberPointer:
-  case CK_BaseToDerivedMemberPointer:
-  case CK_MemberPointerToBoolean:
-  case CK_ReinterpretMemberPointer:
-  case CK_AnyPointerToBlockPointerCast:
-  case CK_ARCProduceObject:
-  case CK_ARCConsumeObject:
-  case CK_ARCReclaimReturnedObject:
-  case CK_ARCExtendBlockObject:
-  case CK_CopyAndAutoreleaseBlockObject:
-  case CK_IntToOCLSampler:
-  case CK_FixedPointCast:
-  case CK_FixedPointToBoolean:
-    return EmitUnsupportedLValue(E, "unexpected cast lvalue");
-
-  case CK_Dependent:
-    llvm_unreachable("dependent cast kind in IR gen!");
-
-  case CK_BuiltinFnToFnPtr:
-    llvm_unreachable("builtin functions are handled elsewhere");
-
-  // These are never l-values; just use the aggregate emission code.
-  case CK_NonAtomicToAtomic:
-  case CK_AtomicToNonAtomic:
-    return EmitAggExprToLValue(E);
-
-  case CK_Dynamic: {
-    LValue LV = EmitLValue(E->getSubExpr());
-    Address V = LV.getAddress();
-    const auto *DCE = cast<CXXDynamicCastExpr>(E);
-    return MakeNaturalAlignAddrLValue(EmitDynamicCast(V, DCE), E->getType());
-  }
-
-  case CK_ConstructorConversion:
-  case CK_UserDefinedConversion:
-  case CK_CPointerToObjCPointerCast:
-  case CK_BlockPointerToObjCPointerCast:
-  case CK_NoOp:
-  case CK_LValueToRValue:
-    return EmitLValue(E->getSubExpr());
-
-  case CK_UncheckedDerivedToBase:
-  case CK_DerivedToBase: {
-    const RecordType *DerivedClassTy =
-      E->getSubExpr()->getType()->getAs<RecordType>();
-    auto *DerivedClassDecl = cast<CXXRecordDecl>(DerivedClassTy->getDecl());
-
-    LValue LV = EmitLValue(E->getSubExpr());
-    Address This = LV.getAddress();
-
-    // Perform the derived-to-base conversion
-    Address Base = GetAddressOfBaseClass(
-        This, DerivedClassDecl, E->path_begin(), E->path_end(),
-        /*NullCheckValue=*/false, E->getExprLoc());
-
-    // TODO: Support accesses to members of base classes in TBAA. For now, we
-    // conservatively pretend that the complete object is of the base class
-    // type.
-    return MakeAddrLValue(Base, E->getType(), LV.getBaseInfo(),
-                          CGM.getTBAAInfoForSubobject(LV, E->getType()));
-  }
-  case CK_ToUnion:
-    return EmitAggExprToLValue(E);
-  case CK_BaseToDerived: {
-    const RecordType *DerivedClassTy = E->getType()->getAs<RecordType>();
-    auto *DerivedClassDecl = cast<CXXRecordDecl>(DerivedClassTy->getDecl());
-
-    LValue LV = EmitLValue(E->getSubExpr());
-
-    // Perform the base-to-derived conversion
-    Address Derived =
-      GetAddressOfDerivedClass(LV.getAddress(), DerivedClassDecl,
-                               E->path_begin(), E->path_end(),
-                               /*NullCheckValue=*/false);
-
-    // C++11 [expr.static.cast]p2: Behavior is undefined if a downcast is
-    // performed and the object is not of the derived type.
-    if (sanitizePerformTypeCheck())
-      EmitTypeCheck(TCK_DowncastReference, E->getExprLoc(),
-                    Derived.getPointer(), E->getType());
-
-    if (SanOpts.has(SanitizerKind::CFIDerivedCast))
-      EmitVTablePtrCheckForCast(E->getType(), Derived.getPointer(),
-                                /*MayBeNull=*/false, CFITCK_DerivedCast,
-                                E->getBeginLoc());
-
-    return MakeAddrLValue(Derived, E->getType(), LV.getBaseInfo(),
-                          CGM.getTBAAInfoForSubobject(LV, E->getType()));
-  }
-  case CK_LValueBitCast: {
-    // This must be a reinterpret_cast (or c-style equivalent).
-    const auto *CE = cast<ExplicitCastExpr>(E);
-
-    CGM.EmitExplicitCastExprType(CE, this);
-    LValue LV = EmitLValue(E->getSubExpr());
-    Address V = Builder.CreateBitCast(LV.getAddress(),
-                                      ConvertType(CE->getTypeAsWritten()));
-
-    if (SanOpts.has(SanitizerKind::CFIUnrelatedCast))
-      EmitVTablePtrCheckForCast(E->getType(), V.getPointer(),
-                                /*MayBeNull=*/false, CFITCK_UnrelatedCast,
-                                E->getBeginLoc());
-
-    return MakeAddrLValue(V, E->getType(), LV.getBaseInfo(),
-                          CGM.getTBAAInfoForSubobject(LV, E->getType()));
-  }
-  case CK_AddressSpaceConversion: {
-    LValue LV = EmitLValue(E->getSubExpr());
-    QualType DestTy = getContext().getPointerType(E->getType());
-    llvm::Value *V = getTargetHooks().performAddrSpaceCast(
-        *this, LV.getPointer(), E->getSubExpr()->getType().getAddressSpace(),
-        E->getType().getAddressSpace(), ConvertType(DestTy));
-    return MakeAddrLValue(Address(V, LV.getAddress().getAlignment()),
-                          E->getType(), LV.getBaseInfo(), LV.getTBAAInfo());
-  }
-  case CK_ObjCObjectLValueCast: {
-    LValue LV = EmitLValue(E->getSubExpr());
-    Address V = Builder.CreateElementBitCast(LV.getAddress(),
-                                             ConvertType(E->getType()));
-    return MakeAddrLValue(V, E->getType(), LV.getBaseInfo(),
-                          CGM.getTBAAInfoForSubobject(LV, E->getType()));
-  }
-  case CK_ZeroToOCLOpaqueType:
-    llvm_unreachable("NULL to OpenCL opaque type lvalue cast is not valid");
-  }
-
-  llvm_unreachable("Unhandled lvalue cast kind?");
-}
-
-LValue CodeGenFunction::EmitOpaqueValueLValue(const OpaqueValueExpr *e) {
-  assert(OpaqueValueMappingData::shouldBindAsLValue(e));
-  return getOrCreateOpaqueLValueMapping(e);
-}
-
-LValue
-CodeGenFunction::getOrCreateOpaqueLValueMapping(const OpaqueValueExpr *e) {
-  assert(OpaqueValueMapping::shouldBindAsLValue(e));
-
-  llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator
-      it = OpaqueLValues.find(e);
-
-  if (it != OpaqueLValues.end())
-    return it->second;
-
-  assert(e->isUnique() && "LValue for a nonunique OVE hasn't been emitted");
-  return EmitLValue(e->getSourceExpr());
-}
-
-RValue
-CodeGenFunction::getOrCreateOpaqueRValueMapping(const OpaqueValueExpr *e) {
-  assert(!OpaqueValueMapping::shouldBindAsLValue(e));
-
-  llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator
-      it = OpaqueRValues.find(e);
-
-  if (it != OpaqueRValues.end())
-    return it->second;
-
-  assert(e->isUnique() && "RValue for a nonunique OVE hasn't been emitted");
-  return EmitAnyExpr(e->getSourceExpr());
-}
-
-RValue CodeGenFunction::EmitRValueForField(LValue LV,
-                                           const FieldDecl *FD,
-                                           SourceLocation Loc) {
-  QualType FT = FD->getType();
-  LValue FieldLV = EmitLValueForField(LV, FD);
-  switch (getEvaluationKind(FT)) {
-  case TEK_Complex:
-    return RValue::getComplex(EmitLoadOfComplex(FieldLV, Loc));
-  case TEK_Aggregate:
-    return FieldLV.asAggregateRValue();
-  case TEK_Scalar:
-    // This routine is used to load fields one-by-one to perform a copy, so
-    // don't load reference fields.
-    if (FD->getType()->isReferenceType())
-      return RValue::get(FieldLV.getPointer());
-    return EmitLoadOfLValue(FieldLV, Loc);
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-//===--------------------------------------------------------------------===//
-//                             Expression Emission
-//===--------------------------------------------------------------------===//
-
-RValue CodeGenFunction::EmitCallExpr(const CallExpr *E,
-                                     ReturnValueSlot ReturnValue) {
-  // Builtins never have block type.
-  if (E->getCallee()->getType()->isBlockPointerType())
-    return EmitBlockCallExpr(E, ReturnValue);
-
-  if (const auto *CE = dyn_cast<CXXMemberCallExpr>(E))
-    return EmitCXXMemberCallExpr(CE, ReturnValue);
-
-  if (const auto *CE = dyn_cast<CUDAKernelCallExpr>(E))
-    return EmitCUDAKernelCallExpr(CE, ReturnValue);
-
-  if (const auto *CE = dyn_cast<CXXOperatorCallExpr>(E))
-    if (const CXXMethodDecl *MD =
-          dyn_cast_or_null<CXXMethodDecl>(CE->getCalleeDecl()))
-      return EmitCXXOperatorMemberCallExpr(CE, MD, ReturnValue);
-
-  CGCallee callee = EmitCallee(E->getCallee());
-
-  if (callee.isBuiltin()) {
-    return EmitBuiltinExpr(callee.getBuiltinDecl(), callee.getBuiltinID(),
-                           E, ReturnValue);
-  }
-
-  if (callee.isPseudoDestructor()) {
-    return EmitCXXPseudoDestructorExpr(callee.getPseudoDestructorExpr());
-  }
-
-  return EmitCall(E->getCallee()->getType(), callee, E, ReturnValue);
-}
-
-/// Emit a CallExpr without considering whether it might be a subclass.
-RValue CodeGenFunction::EmitSimpleCallExpr(const CallExpr *E,
-                                           ReturnValueSlot ReturnValue) {
-  CGCallee Callee = EmitCallee(E->getCallee());
-  return EmitCall(E->getCallee()->getType(), Callee, E, ReturnValue);
-}
-
-static CGCallee EmitDirectCallee(CodeGenFunction &CGF, const FunctionDecl *FD) {
-  if (auto builtinID = FD->getBuiltinID()) {
-    return CGCallee::forBuiltin(builtinID, FD);
-  }
-
-  llvm::Constant *calleePtr = EmitFunctionDeclPointer(CGF.CGM, FD);
-  return CGCallee::forDirect(calleePtr, GlobalDecl(FD));
-}
-
-CGCallee CodeGenFunction::EmitCallee(const Expr *E) {
-  E = E->IgnoreParens();
-
-  // Look through function-to-pointer decay.
-  if (auto ICE = dyn_cast<ImplicitCastExpr>(E)) {
-    if (ICE->getCastKind() == CK_FunctionToPointerDecay ||
-        ICE->getCastKind() == CK_BuiltinFnToFnPtr) {
-      return EmitCallee(ICE->getSubExpr());
-    }
-
-  // Resolve direct calls.
-  } else if (auto DRE = dyn_cast<DeclRefExpr>(E)) {
-    if (auto FD = dyn_cast<FunctionDecl>(DRE->getDecl())) {
-      return EmitDirectCallee(*this, FD);
-    }
-  } else if (auto ME = dyn_cast<MemberExpr>(E)) {
-    if (auto FD = dyn_cast<FunctionDecl>(ME->getMemberDecl())) {
-      EmitIgnoredExpr(ME->getBase());
-      return EmitDirectCallee(*this, FD);
-    }
-
-  // Look through template substitutions.
-  } else if (auto NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) {
-    return EmitCallee(NTTP->getReplacement());
-
-  // Treat pseudo-destructor calls differently.
-  } else if (auto PDE = dyn_cast<CXXPseudoDestructorExpr>(E)) {
-    return CGCallee::forPseudoDestructor(PDE);
-  }
-
-  // Otherwise, we have an indirect reference.
-  llvm::Value *calleePtr;
-  QualType functionType;
-  if (auto ptrType = E->getType()->getAs<PointerType>()) {
-    calleePtr = EmitScalarExpr(E);
-    functionType = ptrType->getPointeeType();
-  } else {
-    functionType = E->getType();
-    calleePtr = EmitLValue(E).getPointer();
-  }
-  assert(functionType->isFunctionType());
-
-  GlobalDecl GD;
-  if (const auto *VD =
-          dyn_cast_or_null<VarDecl>(E->getReferencedDeclOfCallee()))
-    GD = GlobalDecl(VD);
-
-  CGCalleeInfo calleeInfo(functionType->getAs<FunctionProtoType>(), GD);
-  CGCallee callee(calleeInfo, calleePtr);
-  return callee;
-}
-
-LValue CodeGenFunction::EmitBinaryOperatorLValue(const BinaryOperator *E) {
-  // Comma expressions just emit their LHS then their RHS as an l-value.
-  if (E->getOpcode() == BO_Comma) {
-    EmitIgnoredExpr(E->getLHS());
-    EnsureInsertPoint();
-    return EmitLValue(E->getRHS());
-  }
-
-  if (E->getOpcode() == BO_PtrMemD ||
-      E->getOpcode() == BO_PtrMemI)
-    return EmitPointerToDataMemberBinaryExpr(E);
-
-  assert(E->getOpcode() == BO_Assign && "unexpected binary l-value");
-
-  // Note that in all of these cases, __block variables need the RHS
-  // evaluated first just in case the variable gets moved by the RHS.
-
-  switch (getEvaluationKind(E->getType())) {
-  case TEK_Scalar: {
-    switch (E->getLHS()->getType().getObjCLifetime()) {
-    case Qualifiers::OCL_Strong:
-      return EmitARCStoreStrong(E, /*ignored*/ false).first;
-
-    case Qualifiers::OCL_Autoreleasing:
-      return EmitARCStoreAutoreleasing(E).first;
-
-    // No reason to do any of these differently.
-    case Qualifiers::OCL_None:
-    case Qualifiers::OCL_ExplicitNone:
-    case Qualifiers::OCL_Weak:
-      break;
-    }
-
-    RValue RV = EmitAnyExpr(E->getRHS());
-    LValue LV = EmitCheckedLValue(E->getLHS(), TCK_Store);
-    if (RV.isScalar())
-      EmitNullabilityCheck(LV, RV.getScalarVal(), E->getExprLoc());
-    EmitStoreThroughLValue(RV, LV);
-    return LV;
-  }
-
-  case TEK_Complex:
-    return EmitComplexAssignmentLValue(E);
-
-  case TEK_Aggregate:
-    return EmitAggExprToLValue(E);
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-LValue CodeGenFunction::EmitCallExprLValue(const CallExpr *E) {
-  RValue RV = EmitCallExpr(E);
-
-  if (!RV.isScalar())
-    return MakeAddrLValue(RV.getAggregateAddress(), E->getType(),
-                          AlignmentSource::Decl);
-
-  assert(E->getCallReturnType(getContext())->isReferenceType() &&
-         "Can't have a scalar return unless the return type is a "
-         "reference type!");
-
-  return MakeNaturalAlignPointeeAddrLValue(RV.getScalarVal(), E->getType());
-}
-
-LValue CodeGenFunction::EmitVAArgExprLValue(const VAArgExpr *E) {
-  // FIXME: This shouldn't require another copy.
-  return EmitAggExprToLValue(E);
-}
-
-LValue CodeGenFunction::EmitCXXConstructLValue(const CXXConstructExpr *E) {
-  assert(E->getType()->getAsCXXRecordDecl()->hasTrivialDestructor()
-         && "binding l-value to type which needs a temporary");
-  AggValueSlot Slot = CreateAggTemp(E->getType());
-  EmitCXXConstructExpr(E, Slot);
-  return MakeAddrLValue(Slot.getAddress(), E->getType(), AlignmentSource::Decl);
-}
-
-LValue
-CodeGenFunction::EmitCXXTypeidLValue(const CXXTypeidExpr *E) {
-  return MakeNaturalAlignAddrLValue(EmitCXXTypeidExpr(E), E->getType());
-}
-
-Address CodeGenFunction::EmitCXXUuidofExpr(const CXXUuidofExpr *E) {
-  return Builder.CreateElementBitCast(CGM.GetAddrOfUuidDescriptor(E),
-                                      ConvertType(E->getType()));
-}
-
-LValue CodeGenFunction::EmitCXXUuidofLValue(const CXXUuidofExpr *E) {
-  return MakeAddrLValue(EmitCXXUuidofExpr(E), E->getType(),
-                        AlignmentSource::Decl);
-}
-
-LValue
-CodeGenFunction::EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E) {
-  AggValueSlot Slot = CreateAggTemp(E->getType(), "temp.lvalue");
-  Slot.setExternallyDestructed();
-  EmitAggExpr(E->getSubExpr(), Slot);
-  EmitCXXTemporary(E->getTemporary(), E->getType(), Slot.getAddress());
-  return MakeAddrLValue(Slot.getAddress(), E->getType(), AlignmentSource::Decl);
-}
-
-LValue
-CodeGenFunction::EmitLambdaLValue(const LambdaExpr *E) {
-  AggValueSlot Slot = CreateAggTemp(E->getType(), "temp.lvalue");
-  EmitLambdaExpr(E, Slot);
-  return MakeAddrLValue(Slot.getAddress(), E->getType(), AlignmentSource::Decl);
-}
-
-LValue CodeGenFunction::EmitObjCMessageExprLValue(const ObjCMessageExpr *E) {
-  RValue RV = EmitObjCMessageExpr(E);
-
-  if (!RV.isScalar())
-    return MakeAddrLValue(RV.getAggregateAddress(), E->getType(),
-                          AlignmentSource::Decl);
-
-  assert(E->getMethodDecl()->getReturnType()->isReferenceType() &&
-         "Can't have a scalar return unless the return type is a "
-         "reference type!");
-
-  return MakeNaturalAlignPointeeAddrLValue(RV.getScalarVal(), E->getType());
-}
-
-LValue CodeGenFunction::EmitObjCSelectorLValue(const ObjCSelectorExpr *E) {
-  Address V =
-    CGM.getObjCRuntime().GetAddrOfSelector(*this, E->getSelector());
-  return MakeAddrLValue(V, E->getType(), AlignmentSource::Decl);
-}
-
-llvm::Value *CodeGenFunction::EmitIvarOffset(const ObjCInterfaceDecl *Interface,
-                                             const ObjCIvarDecl *Ivar) {
-  return CGM.getObjCRuntime().EmitIvarOffset(*this, Interface, Ivar);
-}
-
-LValue CodeGenFunction::EmitLValueForIvar(QualType ObjectTy,
-                                          llvm::Value *BaseValue,
-                                          const ObjCIvarDecl *Ivar,
-                                          unsigned CVRQualifiers) {
-  return CGM.getObjCRuntime().EmitObjCValueForIvar(*this, ObjectTy, BaseValue,
-                                                   Ivar, CVRQualifiers);
-}
-
-LValue CodeGenFunction::EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E) {
-  // FIXME: A lot of the code below could be shared with EmitMemberExpr.
-  llvm::Value *BaseValue = nullptr;
-  const Expr *BaseExpr = E->getBase();
-  Qualifiers BaseQuals;
-  QualType ObjectTy;
-  if (E->isArrow()) {
-    BaseValue = EmitScalarExpr(BaseExpr);
-    ObjectTy = BaseExpr->getType()->getPointeeType();
-    BaseQuals = ObjectTy.getQualifiers();
-  } else {
-    LValue BaseLV = EmitLValue(BaseExpr);
-    BaseValue = BaseLV.getPointer();
-    ObjectTy = BaseExpr->getType();
-    BaseQuals = ObjectTy.getQualifiers();
-  }
-
-  LValue LV =
-    EmitLValueForIvar(ObjectTy, BaseValue, E->getDecl(),
-                      BaseQuals.getCVRQualifiers());
-  setObjCGCLValueClass(getContext(), E, LV);
-  return LV;
-}
-
-LValue CodeGenFunction::EmitStmtExprLValue(const StmtExpr *E) {
-  // Can only get l-value for message expression returning aggregate type
-  RValue RV = EmitAnyExprToTemp(E);
-  return MakeAddrLValue(RV.getAggregateAddress(), E->getType(),
-                        AlignmentSource::Decl);
-}
-
-RValue CodeGenFunction::EmitCall(QualType CalleeType, const CGCallee &OrigCallee,
-                                 const CallExpr *E, ReturnValueSlot ReturnValue,
-                                 llvm::Value *Chain) {
-  // Get the actual function type. The callee type will always be a pointer to
-  // function type or a block pointer type.
-  assert(CalleeType->isFunctionPointerType() &&
-         "Call must have function pointer type!");
-
-  const Decl *TargetDecl =
-      OrigCallee.getAbstractInfo().getCalleeDecl().getDecl();
-
-  if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(TargetDecl))
-    // We can only guarantee that a function is called from the correct
-    // context/function based on the appropriate target attributes,
-    // so only check in the case where we have both always_inline and target
-    // since otherwise we could be making a conditional call after a check for
-    // the proper cpu features (and it won't cause code generation issues due to
-    // function based code generation).
-    if (TargetDecl->hasAttr<AlwaysInlineAttr>() &&
-        TargetDecl->hasAttr<TargetAttr>())
-      checkTargetFeatures(E, FD);
-
-  CalleeType = getContext().getCanonicalType(CalleeType);
-
-  auto PointeeType = cast<PointerType>(CalleeType)->getPointeeType();
-
-  CGCallee Callee = OrigCallee;
-
-  if (getLangOpts().CPlusPlus && SanOpts.has(SanitizerKind::Function) &&
-      (!TargetDecl || !isa<FunctionDecl>(TargetDecl))) {
-    if (llvm::Constant *PrefixSig =
-            CGM.getTargetCodeGenInfo().getUBSanFunctionSignature(CGM)) {
-      SanitizerScope SanScope(this);
-      // Remove any (C++17) exception specifications, to allow calling e.g. a
-      // noexcept function through a non-noexcept pointer.
-      auto ProtoTy =
-        getContext().getFunctionTypeWithExceptionSpec(PointeeType, EST_None);
-      llvm::Constant *FTRTTIConst =
-          CGM.GetAddrOfRTTIDescriptor(ProtoTy, /*ForEH=*/true);
-      llvm::Type *PrefixStructTyElems[] = {PrefixSig->getType(), Int32Ty};
-      llvm::StructType *PrefixStructTy = llvm::StructType::get(
-          CGM.getLLVMContext(), PrefixStructTyElems, /*isPacked=*/true);
-
-      llvm::Value *CalleePtr = Callee.getFunctionPointer();
-
-      llvm::Value *CalleePrefixStruct = Builder.CreateBitCast(
-          CalleePtr, llvm::PointerType::getUnqual(PrefixStructTy));
-      llvm::Value *CalleeSigPtr =
-          Builder.CreateConstGEP2_32(PrefixStructTy, CalleePrefixStruct, 0, 0);
-      llvm::Value *CalleeSig =
-          Builder.CreateAlignedLoad(CalleeSigPtr, getIntAlign());
-      llvm::Value *CalleeSigMatch = Builder.CreateICmpEQ(CalleeSig, PrefixSig);
-
-      llvm::BasicBlock *Cont = createBasicBlock("cont");
-      llvm::BasicBlock *TypeCheck = createBasicBlock("typecheck");
-      Builder.CreateCondBr(CalleeSigMatch, TypeCheck, Cont);
-
-      EmitBlock(TypeCheck);
-      llvm::Value *CalleeRTTIPtr =
-          Builder.CreateConstGEP2_32(PrefixStructTy, CalleePrefixStruct, 0, 1);
-      llvm::Value *CalleeRTTIEncoded =
-          Builder.CreateAlignedLoad(CalleeRTTIPtr, getPointerAlign());
-      llvm::Value *CalleeRTTI =
-          DecodeAddrUsedInPrologue(CalleePtr, CalleeRTTIEncoded);
-      llvm::Value *CalleeRTTIMatch =
-          Builder.CreateICmpEQ(CalleeRTTI, FTRTTIConst);
-      llvm::Constant *StaticData[] = {EmitCheckSourceLocation(E->getBeginLoc()),
-                                      EmitCheckTypeDescriptor(CalleeType)};
-      EmitCheck(std::make_pair(CalleeRTTIMatch, SanitizerKind::Function),
-                SanitizerHandler::FunctionTypeMismatch, StaticData, CalleePtr);
-
-      Builder.CreateBr(Cont);
-      EmitBlock(Cont);
-    }
-  }
-
-  const auto *FnType = cast<FunctionType>(PointeeType);
-
-  // If we are checking indirect calls and this call is indirect, check that the
-  // function pointer is a member of the bit set for the function type.
-  if (SanOpts.has(SanitizerKind::CFIICall) &&
-      (!TargetDecl || !isa<FunctionDecl>(TargetDecl))) {
-    SanitizerScope SanScope(this);
-    EmitSanitizerStatReport(llvm::SanStat_CFI_ICall);
-
-    llvm::Metadata *MD;
-    if (CGM.getCodeGenOpts().SanitizeCfiICallGeneralizePointers)
-      MD = CGM.CreateMetadataIdentifierGeneralized(QualType(FnType, 0));
-    else
-      MD = CGM.CreateMetadataIdentifierForType(QualType(FnType, 0));
-
-    llvm::Value *TypeId = llvm::MetadataAsValue::get(getLLVMContext(), MD);
-
-    llvm::Value *CalleePtr = Callee.getFunctionPointer();
-    llvm::Value *CastedCallee = Builder.CreateBitCast(CalleePtr, Int8PtrTy);
-    llvm::Value *TypeTest = Builder.CreateCall(
-        CGM.getIntrinsic(llvm::Intrinsic::type_test), {CastedCallee, TypeId});
-
-    auto CrossDsoTypeId = CGM.CreateCrossDsoCfiTypeId(MD);
-    llvm::Constant *StaticData[] = {
-        llvm::ConstantInt::get(Int8Ty, CFITCK_ICall),
-        EmitCheckSourceLocation(E->getBeginLoc()),
-        EmitCheckTypeDescriptor(QualType(FnType, 0)),
-    };
-    if (CGM.getCodeGenOpts().SanitizeCfiCrossDso && CrossDsoTypeId) {
-      EmitCfiSlowPathCheck(SanitizerKind::CFIICall, TypeTest, CrossDsoTypeId,
-                           CastedCallee, StaticData);
-    } else {
-      EmitCheck(std::make_pair(TypeTest, SanitizerKind::CFIICall),
-                SanitizerHandler::CFICheckFail, StaticData,
-                {CastedCallee, llvm::UndefValue::get(IntPtrTy)});
-    }
-  }
-
-  CallArgList Args;
-  if (Chain)
-    Args.add(RValue::get(Builder.CreateBitCast(Chain, CGM.VoidPtrTy)),
-             CGM.getContext().VoidPtrTy);
-
-  // C++17 requires that we evaluate arguments to a call using assignment syntax
-  // right-to-left, and that we evaluate arguments to certain other operators
-  // left-to-right. Note that we allow this to override the order dictated by
-  // the calling convention on the MS ABI, which means that parameter
-  // destruction order is not necessarily reverse construction order.
-  // FIXME: Revisit this based on C++ committee response to unimplementability.
-  EvaluationOrder Order = EvaluationOrder::Default;
-  if (auto *OCE = dyn_cast<CXXOperatorCallExpr>(E)) {
-    if (OCE->isAssignmentOp())
-      Order = EvaluationOrder::ForceRightToLeft;
-    else {
-      switch (OCE->getOperator()) {
-      case OO_LessLess:
-      case OO_GreaterGreater:
-      case OO_AmpAmp:
-      case OO_PipePipe:
-      case OO_Comma:
-      case OO_ArrowStar:
-        Order = EvaluationOrder::ForceLeftToRight;
-        break;
-      default:
-        break;
-      }
-    }
-  }
-
-  EmitCallArgs(Args, dyn_cast<FunctionProtoType>(FnType), E->arguments(),
-               E->getDirectCallee(), /*ParamsToSkip*/ 0, Order);
-
-  const CGFunctionInfo &FnInfo = CGM.getTypes().arrangeFreeFunctionCall(
-      Args, FnType, /*isChainCall=*/Chain);
-
-  // C99 6.5.2.2p6:
-  //   If the expression that denotes the called function has a type
-  //   that does not include a prototype, [the default argument
-  //   promotions are performed]. If the number of arguments does not
-  //   equal the number of parameters, the behavior is undefined. If
-  //   the function is defined with a type that includes a prototype,
-  //   and either the prototype ends with an ellipsis (, ...) or the
-  //   types of the arguments after promotion are not compatible with
-  //   the types of the parameters, the behavior is undefined. If the
-  //   function is defined with a type that does not include a
-  //   prototype, and the types of the arguments after promotion are
-  //   not compatible with those of the parameters after promotion,
-  //   the behavior is undefined [except in some trivial cases].
-  // That is, in the general case, we should assume that a call
-  // through an unprototyped function type works like a *non-variadic*
-  // call.  The way we make this work is to cast to the exact type
-  // of the promoted arguments.
-  //
-  // Chain calls use this same code path to add the invisible chain parameter
-  // to the function type.
-  if (isa<FunctionNoProtoType>(FnType) || Chain) {
-    llvm::Type *CalleeTy = getTypes().GetFunctionType(FnInfo);
-    CalleeTy = CalleeTy->getPointerTo();
-
-    llvm::Value *CalleePtr = Callee.getFunctionPointer();
-    CalleePtr = Builder.CreateBitCast(CalleePtr, CalleeTy, "callee.knr.cast");
-    Callee.setFunctionPointer(CalleePtr);
-  }
-
-  return EmitCall(FnInfo, Callee, ReturnValue, Args, nullptr, E->getExprLoc());
-}
-
-LValue CodeGenFunction::
-EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E) {
-  Address BaseAddr = Address::invalid();
-  if (E->getOpcode() == BO_PtrMemI) {
-    BaseAddr = EmitPointerWithAlignment(E->getLHS());
-  } else {
-    BaseAddr = EmitLValue(E->getLHS()).getAddress();
-  }
-
-  llvm::Value *OffsetV = EmitScalarExpr(E->getRHS());
-
-  const MemberPointerType *MPT
-    = E->getRHS()->getType()->getAs<MemberPointerType>();
-
-  LValueBaseInfo BaseInfo;
-  TBAAAccessInfo TBAAInfo;
-  Address MemberAddr =
-    EmitCXXMemberDataPointerAddress(E, BaseAddr, OffsetV, MPT, &BaseInfo,
-                                    &TBAAInfo);
-
-  return MakeAddrLValue(MemberAddr, MPT->getPointeeType(), BaseInfo, TBAAInfo);
-}
-
-/// Given the address of a temporary variable, produce an r-value of
-/// its type.
-RValue CodeGenFunction::convertTempToRValue(Address addr,
-                                            QualType type,
-                                            SourceLocation loc) {
-  LValue lvalue = MakeAddrLValue(addr, type, AlignmentSource::Decl);
-  switch (getEvaluationKind(type)) {
-  case TEK_Complex:
-    return RValue::getComplex(EmitLoadOfComplex(lvalue, loc));
-  case TEK_Aggregate:
-    return lvalue.asAggregateRValue();
-  case TEK_Scalar:
-    return RValue::get(EmitLoadOfScalar(lvalue, loc));
-  }
-  llvm_unreachable("bad evaluation kind");
-}
-
-void CodeGenFunction::SetFPAccuracy(llvm::Value *Val, float Accuracy) {
-  assert(Val->getType()->isFPOrFPVectorTy());
-  if (Accuracy == 0.0 || !isa<llvm::Instruction>(Val))
-    return;
-
-  llvm::MDBuilder MDHelper(getLLVMContext());
-  llvm::MDNode *Node = MDHelper.createFPMath(Accuracy);
-
-  cast<llvm::Instruction>(Val)->setMetadata(llvm::LLVMContext::MD_fpmath, Node);
-}
-
-namespace {
-  struct LValueOrRValue {
-    LValue LV;
-    RValue RV;
-  };
-}
-
-static LValueOrRValue emitPseudoObjectExpr(CodeGenFunction &CGF,
-                                           const PseudoObjectExpr *E,
-                                           bool forLValue,
-                                           AggValueSlot slot) {
-  SmallVector<CodeGenFunction::OpaqueValueMappingData, 4> opaques;
-
-  // Find the result expression, if any.
-  const Expr *resultExpr = E->getResultExpr();
-  LValueOrRValue result;
-
-  for (PseudoObjectExpr::const_semantics_iterator
-         i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
-    const Expr *semantic = *i;
-
-    // If this semantic expression is an opaque value, bind it
-    // to the result of its source expression.
-    if (const auto *ov = dyn_cast<OpaqueValueExpr>(semantic)) {
-      // Skip unique OVEs.
-      if (ov->isUnique()) {
-        assert(ov != resultExpr &&
-               "A unique OVE cannot be used as the result expression");
-        continue;
-      }
-
-      // If this is the result expression, we may need to evaluate
-      // directly into the slot.
-      typedef CodeGenFunction::OpaqueValueMappingData OVMA;
-      OVMA opaqueData;
-      if (ov == resultExpr && ov->isRValue() && !forLValue &&
-          CodeGenFunction::hasAggregateEvaluationKind(ov->getType())) {
-        CGF.EmitAggExpr(ov->getSourceExpr(), slot);
-        LValue LV = CGF.MakeAddrLValue(slot.getAddress(), ov->getType(),
-                                       AlignmentSource::Decl);
-        opaqueData = OVMA::bind(CGF, ov, LV);
-        result.RV = slot.asRValue();
-
-      // Otherwise, emit as normal.
-      } else {
-        opaqueData = OVMA::bind(CGF, ov, ov->getSourceExpr());
-
-        // If this is the result, also evaluate the result now.
-        if (ov == resultExpr) {
-          if (forLValue)
-            result.LV = CGF.EmitLValue(ov);
-          else
-            result.RV = CGF.EmitAnyExpr(ov, slot);
-        }
-      }
-
-      opaques.push_back(opaqueData);
-
-    // Otherwise, if the expression is the result, evaluate it
-    // and remember the result.
-    } else if (semantic == resultExpr) {
-      if (forLValue)
-        result.LV = CGF.EmitLValue(semantic);
-      else
-        result.RV = CGF.EmitAnyExpr(semantic, slot);
-
-    // Otherwise, evaluate the expression in an ignored context.
-    } else {
-      CGF.EmitIgnoredExpr(semantic);
-    }
-  }
-
-  // Unbind all the opaques now.
-  for (unsigned i = 0, e = opaques.size(); i != e; ++i)
-    opaques[i].unbind(CGF);
-
-  return result;
-}
-
-RValue CodeGenFunction::EmitPseudoObjectRValue(const PseudoObjectExpr *E,
-                                               AggValueSlot slot) {
-  return emitPseudoObjectExpr(*this, E, false, slot).RV;
-}
-
-LValue CodeGenFunction::EmitPseudoObjectLValue(const PseudoObjectExpr *E) {
-  return emitPseudoObjectExpr(*this, E, true, AggValueSlot::ignored()).LV;
-}