diff --git a/clang/lib/CodeGen/Address.h b/clang/lib/CodeGen/Address.h
--- a/clang/lib/CodeGen/Address.h
+++ b/clang/lib/CodeGen/Address.h
@@ -131,9 +131,7 @@
   }
 
   ConstantAddress getElementBitCast(llvm::Type *ElemTy) const {
-    llvm::Constant *BitCast = llvm::ConstantExpr::getBitCast(
-        getPointer(), ElemTy->getPointerTo(getAddressSpace()));
-    return ConstantAddress(BitCast, ElemTy, getAlignment());
+    return ConstantAddress(getPointer(), ElemTy, getAlignment());
   }
 
   static bool isaImpl(Address addr) {
diff --git a/clang/lib/CodeGen/CGAtomic.cpp b/clang/lib/CodeGen/CGAtomic.cpp
--- a/clang/lib/CodeGen/CGAtomic.cpp
+++ b/clang/lib/CodeGen/CGAtomic.cpp
@@ -88,7 +88,9 @@
             CGF.Int8Ty, VoidPtrAddr, OffsetInChars.getQuantity());
         llvm::Type *IntTy = CGF.Builder.getIntNTy(AtomicSizeInBits);
         auto Addr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-            VoidPtrAddr, IntTy->getPointerTo(), "atomic_bitfield_base");
+            VoidPtrAddr,
+            llvm::PointerType::get(CGF.getLLVMContext(), 0),
+            "atomic_bitfield_base");
         BFI = OrigBFI;
         BFI.Offset = Offset;
         BFI.StorageSize = AtomicSizeInBits;
@@ -796,8 +798,7 @@
     ValTy =
         CGF.getContext().getIntTypeForBitwidth(SizeInBits, /*Signed=*/false);
     llvm::Type *ITy = llvm::IntegerType::get(CGF.getLLVMContext(), SizeInBits);
-    Address Ptr = Address(CGF.Builder.CreateBitCast(Val, ITy->getPointerTo()),
-                          ITy, Align);
+    Address Ptr = Address(Val, ITy, Align);
     Val = CGF.EmitLoadOfScalar(Ptr, false,
                                CGF.getContext().getPointerType(ValTy),
                                Loc);
diff --git a/clang/lib/CodeGen/CGBlocks.cpp b/clang/lib/CodeGen/CGBlocks.cpp
--- a/clang/lib/CodeGen/CGBlocks.cpp
+++ b/clang/lib/CodeGen/CGBlocks.cpp
@@ -1427,7 +1427,8 @@
   // directly as BlockPointer.
   BlockPointer = Builder.CreatePointerCast(
       arg,
-      BlockInfo->StructureType->getPointerTo(
+      llvm::PointerType::get(
+          getLLVMContext(),
           getContext().getLangOpts().OpenCL
               ? getContext().getTargetAddressSpace(LangAS::opencl_generic)
               : 0),
diff --git a/clang/lib/CodeGen/CGBuilder.h b/clang/lib/CodeGen/CGBuilder.h
--- a/clang/lib/CodeGen/CGBuilder.h
+++ b/clang/lib/CodeGen/CGBuilder.h
@@ -168,8 +168,7 @@
   /// preserving information like the alignment and address space.
   Address CreateElementBitCast(Address Addr, llvm::Type *Ty,
                                const llvm::Twine &Name = "") {
-    auto *PtrTy = Ty->getPointerTo(Addr.getAddressSpace());
-    return Address(CreateBitCast(Addr.getPointer(), PtrTy, Name), Ty,
+    return Address(Addr.getPointer(), Ty,
                    Addr.getAlignment(), Addr.isKnownNonNull());
   }
 
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -219,7 +219,7 @@
   llvm::IntegerType *IntType =
     llvm::IntegerType::get(CGF.getLLVMContext(),
                            CGF.getContext().getTypeSize(T));
-  llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
+  llvm::Type *IntPtrType = llvm::PointerType::get(CGF.getLLVMContext(), AddrSpace);
 
   llvm::Value *Args[2];
   Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
@@ -276,18 +276,16 @@
   assert(CGF.getContext().hasSameUnqualifiedType(T, E->getArg(1)->getType()));
 
   llvm::Value *DestPtr = CheckAtomicAlignment(CGF, E);
-  unsigned AddrSpace = DestPtr->getType()->getPointerAddressSpace();
 
   llvm::IntegerType *IntType =
     llvm::IntegerType::get(CGF.getLLVMContext(),
                            CGF.getContext().getTypeSize(T));
-  llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
 
   llvm::Value *Args[2];
   Args[1] = CGF.EmitScalarExpr(E->getArg(1));
   llvm::Type *ValueType = Args[1]->getType();
   Args[1] = EmitToInt(CGF, Args[1], T, IntType);
-  Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
+  Args[0] = DestPtr;
 
   llvm::Value *Result = CGF.Builder.CreateAtomicRMW(
       Kind, Args[0], Args[1], llvm::AtomicOrdering::SequentiallyConsistent);
@@ -318,14 +316,12 @@
                                      bool ReturnBool) {
   QualType T = ReturnBool ? E->getArg(1)->getType() : E->getType();
   llvm::Value *DestPtr = CheckAtomicAlignment(CGF, E);
-  unsigned AddrSpace = DestPtr->getType()->getPointerAddressSpace();
 
   llvm::IntegerType *IntType = llvm::IntegerType::get(
       CGF.getLLVMContext(), CGF.getContext().getTypeSize(T));
-  llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
 
   Value *Args[3];
-  Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
+  Args[0] = DestPtr;
   Args[1] = CGF.EmitScalarExpr(E->getArg(1));
   llvm::Type *ValueType = Args[1]->getType();
   Args[1] = EmitToInt(CGF, Args[1], T, IntType);
@@ -417,10 +413,8 @@
 
   // Convert to i128 pointers and values.
   llvm::Type *Int128Ty = llvm::IntegerType::get(CGF.getLLVMContext(), 128);
-  llvm::Type *Int128PtrTy = Int128Ty->getPointerTo();
-  Destination = CGF.Builder.CreateBitCast(Destination, Int128PtrTy);
-  Address ComparandResult(CGF.Builder.CreateBitCast(ComparandPtr, Int128PtrTy),
-                          Int128Ty, CGF.getContext().toCharUnitsFromBits(128));
+  Address ComparandResult(ComparandPtr, Int128Ty,
+                          CGF.getContext().toCharUnitsFromBits(128));
 
   // (((i128)hi) << 64) | ((i128)lo)
   ExchangeHigh = CGF.Builder.CreateZExt(ExchangeHigh, Int128Ty);
@@ -483,7 +477,6 @@
   CharUnits LoadSize = CGF.getContext().getTypeSizeInChars(ElTy);
   llvm::Type *ITy =
       llvm::IntegerType::get(CGF.getLLVMContext(), LoadSize.getQuantity() * 8);
-  Ptr = CGF.Builder.CreateBitCast(Ptr, ITy->getPointerTo());
   llvm::LoadInst *Load = CGF.Builder.CreateAlignedLoad(ITy, Ptr, LoadSize);
   Load->setVolatile(true);
   return Load;
@@ -495,9 +488,6 @@
   Value *Value = CGF.EmitScalarExpr(E->getArg(1));
   QualType ElTy = E->getArg(0)->getType()->getPointeeType();
   CharUnits StoreSize = CGF.getContext().getTypeSizeInChars(ElTy);
-  llvm::Type *ITy =
-      llvm::IntegerType::get(CGF.getLLVMContext(), StoreSize.getQuantity() * 8);
-  Ptr = CGF.Builder.CreateBitCast(Ptr, ITy->getPointerTo());
   llvm::StoreInst *Store =
       CGF.Builder.CreateAlignedStore(Value, Ptr, StoreSize);
   Store->setVolatile(true);
@@ -982,9 +972,9 @@
   llvm::IntegerType *IntType = llvm::IntegerType::get(
       CGF.getLLVMContext(),
       CGF.getContext().getTypeSize(E->getArg(1)->getType()));
-  llvm::Type *IntPtrType = IntType->getPointerTo();
+  llvm::Type *PtrType = llvm::PointerType::get(CGF.getLLVMContext(), 0);
   llvm::FunctionType *FTy =
-      llvm::FunctionType::get(CGF.Int8Ty, {IntPtrType, IntType}, false);
+      llvm::FunctionType::get(CGF.Int8Ty, {PtrType, IntType}, false);
 
   llvm::InlineAsm *IA =
       llvm::InlineAsm::get(FTy, Asm, Constraints, /*hasSideEffects=*/true);
@@ -1123,9 +1113,9 @@
     Constraints += MachineClobbers;
   }
 
-  llvm::Type *IntPtrType = RetType->getPointerTo();
+  llvm::Type *PtrType = llvm::PointerType::get(CGF.getLLVMContext(), 0);
   llvm::FunctionType *FTy =
-      llvm::FunctionType::get(RetType, {IntPtrType}, false);
+      llvm::FunctionType::get(RetType, {PtrType}, false);
 
   llvm::InlineAsm *IA =
       llvm::InlineAsm::get(FTy, Asm, Constraints, /*hasSideEffects=*/true);
@@ -4092,7 +4082,6 @@
     CharUnits StoreSize = getContext().getTypeSizeInChars(ElTy);
     llvm::Type *ITy = llvm::IntegerType::get(getLLVMContext(),
                                              StoreSize.getQuantity() * 8);
-    Ptr = Builder.CreateBitCast(Ptr, ITy->getPointerTo());
     llvm::StoreInst *Store =
       Builder.CreateAlignedStore(llvm::Constant::getNullValue(ITy), Ptr,
                                  StoreSize);
@@ -4147,8 +4136,6 @@
         PtrTy->castAs<PointerType>()->getPointeeType().isVolatileQualified();
 
     Value *Ptr = EmitScalarExpr(E->getArg(0));
-    unsigned AddrSpace = Ptr->getType()->getPointerAddressSpace();
-    Ptr = Builder.CreateBitCast(Ptr, Int8Ty->getPointerTo(AddrSpace));
     Value *NewVal = Builder.getInt8(1);
     Value *Order = EmitScalarExpr(E->getArg(1));
     if (isa<llvm::ConstantInt>(Order)) {
@@ -4669,10 +4656,8 @@
     llvm::IntegerType *IntType =
       IntegerType::get(getLLVMContext(),
                        getContext().getTypeSize(E->getType()));
-    llvm::Type *IntPtrType = IntType->getPointerTo();
 
-    llvm::Value *Destination =
-      Builder.CreateBitCast(EmitScalarExpr(E->getArg(0)), IntPtrType);
+    llvm::Value *Destination = EmitScalarExpr(E->getArg(0));
 
     llvm::Value *Exchange = EmitScalarExpr(E->getArg(1));
     RTy = Exchange->getType();
@@ -5118,9 +5103,9 @@
     }
     // Any calls now have event arguments passed.
     if (NumArgs >= 7) {
-      llvm::Type *EventTy = ConvertType(getContext().OCLClkEventTy);
-      llvm::PointerType *EventPtrTy = EventTy->getPointerTo(
-          CGM.getContext().getTargetAddressSpace(LangAS::opencl_generic));
+      llvm::PointerType *PtrTy =
+          llvm::PointerType::get(CGM.getLLVMContext(),
+                                 CGM.getContext().getTargetAddressSpace(LangAS::opencl_generic));
 
       llvm::Value *NumEvents =
           Builder.CreateZExtOrTrunc(EmitScalarExpr(E->getArg(3)), Int32Ty);
@@ -5131,21 +5116,21 @@
       llvm::Value *EventWaitList = nullptr;
       if (E->getArg(4)->isNullPointerConstant(
               getContext(), Expr::NPC_ValueDependentIsNotNull)) {
-        EventWaitList = llvm::ConstantPointerNull::get(EventPtrTy);
+        EventWaitList = llvm::ConstantPointerNull::get(PtrTy);
       } else {
         EventWaitList = E->getArg(4)->getType()->isArrayType()
                         ? EmitArrayToPointerDecay(E->getArg(4)).getPointer()
                         : EmitScalarExpr(E->getArg(4));
         // Convert to generic address space.
-        EventWaitList = Builder.CreatePointerCast(EventWaitList, EventPtrTy);
+        EventWaitList = Builder.CreatePointerCast(EventWaitList, PtrTy);
       }
       llvm::Value *EventRet = nullptr;
       if (E->getArg(5)->isNullPointerConstant(
               getContext(), Expr::NPC_ValueDependentIsNotNull)) {
-        EventRet = llvm::ConstantPointerNull::get(EventPtrTy);
+        EventRet = llvm::ConstantPointerNull::get(PtrTy);
       } else {
         EventRet =
-            Builder.CreatePointerCast(EmitScalarExpr(E->getArg(5)), EventPtrTy);
+            Builder.CreatePointerCast(EmitScalarExpr(E->getArg(5)), PtrTy);
       }
 
       auto Info =
@@ -5157,7 +5142,7 @@
 
       std::vector<llvm::Type *> ArgTys = {
           QueueTy,    Int32Ty,    RangeTy,          Int32Ty,
-          EventPtrTy, EventPtrTy, GenericVoidPtrTy, GenericVoidPtrTy};
+          PtrTy, PtrTy, GenericVoidPtrTy, GenericVoidPtrTy};
 
       std::vector<llvm::Value *> Args = {Queue,     Flags,         Range,
                                          NumEvents, EventWaitList, EventRet,
@@ -5476,7 +5461,7 @@
               ArgValue->getType()->getPointerAddressSpace()) {
             ArgValue = Builder.CreateAddrSpaceCast(
               ArgValue,
-              ArgValue->getType()->getPointerTo(PtrTy->getAddressSpace()));
+              llvm::PointerType::get(getLLVMContext(), PtrTy->getAddressSpace()));
           }
         }
 
@@ -5506,7 +5491,7 @@
       if (auto *PtrTy = dyn_cast<llvm::PointerType>(RetTy)) {
         if (PtrTy->getAddressSpace() != V->getType()->getPointerAddressSpace()) {
           V = Builder.CreateAddrSpaceCast(
-            V, V->getType()->getPointerTo(PtrTy->getAddressSpace()));
+            V, llvm::PointerType::get(getLLVMContext(), PtrTy->getAddressSpace()));
         }
       }
 
@@ -8039,8 +8024,7 @@
     llvm::Type *RealResTy = ConvertType(Ty);
     llvm::Type *IntTy =
         llvm::IntegerType::get(getLLVMContext(), getContext().getTypeSize(Ty));
-    llvm::Type *PtrTy = IntTy->getPointerTo();
-    LoadAddr = Builder.CreateBitCast(LoadAddr, PtrTy);
+    llvm::Type *PtrTy = llvm::PointerType::get(getLLVMContext(), 0);
 
     Function *F = CGM.getIntrinsic(
         BuiltinID == clang::ARM::BI__builtin_arm_ldaex ? Intrinsic::arm_ldaex
@@ -8090,7 +8074,6 @@
     QualType Ty = E->getArg(0)->getType();
     llvm::Type *StoreTy = llvm::IntegerType::get(getLLVMContext(),
                                                  getContext().getTypeSize(Ty));
-    StoreAddr = Builder.CreateBitCast(StoreAddr, StoreTy->getPointerTo());
 
     if (StoreVal->getType()->isPointerTy())
       StoreVal = Builder.CreatePtrToInt(StoreVal, Int32Ty);
@@ -9366,12 +9349,9 @@
 
   // Implement the index operand if not omitted.
   if (Ops.size() > 3) {
-    BasePtr = Builder.CreateBitCast(BasePtr, MemoryTy->getPointerTo());
     BasePtr = Builder.CreateGEP(MemoryTy, BasePtr, Ops[2]);
   }
 
-  // Prefetch intriniscs always expect an i8*
-  BasePtr = Builder.CreateBitCast(BasePtr, llvm::PointerType::getUnqual(Int8Ty));
   Value *PrfOp = Ops.back();
 
   Function *F = CGM.getIntrinsic(BuiltinID, Predicate->getType());
@@ -9393,13 +9373,12 @@
   auto MemoryTy = llvm::ScalableVectorType::get(MemEltTy, VectorTy);
 
   Value *Predicate = EmitSVEPredicateCast(Ops[0], MemoryTy);
-  Value *BasePtr = Builder.CreateBitCast(Ops[1], MemoryTy->getPointerTo());
+  Value *BasePtr = Ops[1];
 
   // Does the load have an offset?
   if (Ops.size() > 2)
     BasePtr = Builder.CreateGEP(MemoryTy, BasePtr, Ops[2]);
 
-  BasePtr = Builder.CreateBitCast(BasePtr, MemEltTy->getPointerTo());
   Function *F = CGM.getIntrinsic(BuiltinID, MemoryTy);
   auto *Load =
       cast<llvm::Instruction>(Builder.CreateCall(F, {Predicate, BasePtr}));
@@ -9423,7 +9402,7 @@
   auto MemoryTy = llvm::ScalableVectorType::get(MemEltTy, VectorTy);
 
   Value *Predicate = EmitSVEPredicateCast(Ops[0], MemoryTy);
-  Value *BasePtr = Builder.CreateBitCast(Ops[1], MemoryTy->getPointerTo());
+  Value *BasePtr = Ops[1];
 
   // Does the store have an offset?
   if (Ops.size() == 4)
@@ -9432,7 +9411,6 @@
   // Last value is always the data
   llvm::Value *Val = Builder.CreateTrunc(Ops.back(), MemoryTy);
 
-  BasePtr = Builder.CreateBitCast(BasePtr, MemEltTy->getPointerTo());
   Function *F = CGM.getIntrinsic(BuiltinID, MemoryTy);
   auto *Store =
       cast<llvm::Instruction>(Builder.CreateCall(F, {Val, Predicate, BasePtr}));
@@ -10152,8 +10130,7 @@
     llvm::Type *RealResTy = ConvertType(Ty);
     llvm::Type *IntTy =
         llvm::IntegerType::get(getLLVMContext(), getContext().getTypeSize(Ty));
-    llvm::Type *PtrTy = IntTy->getPointerTo();
-    LoadAddr = Builder.CreateBitCast(LoadAddr, PtrTy);
+    llvm::Type *PtrTy = llvm::PointerType::get(getLLVMContext(), 0);
 
     Function *F =
         CGM.getIntrinsic(BuiltinID == clang::AArch64::BI__builtin_arm_ldaex
@@ -10203,7 +10180,6 @@
     QualType Ty = E->getArg(0)->getType();
     llvm::Type *StoreTy = llvm::IntegerType::get(getLLVMContext(),
                                                  getContext().getTypeSize(Ty));
-    StoreAddr = Builder.CreateBitCast(StoreAddr, StoreTy->getPointerTo());
 
     if (StoreVal->getType()->isPointerTy())
       StoreVal = Builder.CreatePtrToInt(StoreVal, Int64Ty);
@@ -15971,9 +15947,8 @@
 
     // If the user wants the entire vector, just load the entire vector.
     if (NumBytes == 16) {
-      Value *BC = Builder.CreateBitCast(Op0, ResTy->getPointerTo());
       Value *LD =
-          Builder.CreateLoad(Address(BC, ResTy, CharUnits::fromQuantity(1)));
+          Builder.CreateLoad(Address(Op0, ResTy, CharUnits::fromQuantity(1)));
       if (!IsLE)
         return LD;
 
@@ -16026,7 +16001,6 @@
       // Storing the whole vector, simply store it on BE and reverse bytes and
       // store on LE.
       if (Width == 16) {
-        Value *BC = Builder.CreateBitCast(Op0, Op2->getType()->getPointerTo());
         Value *StVec = Op2;
         if (IsLE) {
           SmallVector<int, 16> RevMask;
@@ -16035,7 +16009,7 @@
           StVec = Builder.CreateShuffleVector(Op2, Op2, RevMask);
         }
         return Builder.CreateStore(
-            StVec, Address(BC, Op2->getType(), CharUnits::fromQuantity(1)));
+            StVec, Address(Op0, Op2->getType(), CharUnits::fromQuantity(1)));
       }
       auto *ConvTy = Int64Ty;
       unsigned NumElts = 0;
@@ -16063,14 +16037,13 @@
           Op2, llvm::FixedVectorType::get(ConvTy, NumElts));
       Value *Ptr =
           Builder.CreateGEP(Int8Ty, Op0, ConstantInt::get(Int64Ty, Offset));
-      Value *PtrBC = Builder.CreateBitCast(Ptr, ConvTy->getPointerTo());
       Value *Elt = Builder.CreateExtractElement(Vec, EltNo);
       if (IsLE && Width > 1) {
         Function *F = CGM.getIntrinsic(Intrinsic::bswap, ConvTy);
         Elt = Builder.CreateCall(F, Elt);
       }
       return Builder.CreateStore(
-          Elt, Address(PtrBC, ConvTy, CharUnits::fromQuantity(1)));
+          Elt, Address(Ptr, ConvTy, CharUnits::fromQuantity(1)));
     };
     unsigned Stored = 0;
     unsigned RemainingBytes = NumBytes;
@@ -16718,7 +16691,7 @@
       Value *Vec = Builder.CreateLoad(Addr);
       Value *Call = Builder.CreateCall(F, {Vec});
       llvm::Type *VTy = llvm::FixedVectorType::get(Int8Ty, 16);
-      Value *Ptr = Builder.CreateBitCast(Ops[0], VTy->getPointerTo());
+      Value *Ptr = Ops[0];
       for (unsigned i=0; i<NumVecs; i++) {
         Value *Vec = Builder.CreateExtractValue(Call, i);
         llvm::ConstantInt* Index = llvm::ConstantInt::get(IntTy, i);
@@ -17011,11 +16984,8 @@
   }
 
   auto *GEP = CGF.Builder.CreateGEP(CGF.Int8Ty, DP, Offset);
-  auto *DstTy =
-      CGF.Int16Ty->getPointerTo(GEP->getType()->getPointerAddressSpace());
-  auto *Cast = CGF.Builder.CreateBitCast(GEP, DstTy);
   auto *LD = CGF.Builder.CreateLoad(
-      Address(Cast, CGF.Int16Ty, CharUnits::fromQuantity(2)));
+      Address(GEP, CGF.Int16Ty, CharUnits::fromQuantity(2)));
   llvm::MDBuilder MDHelper(CGF.getLLVMContext());
   llvm::MDNode *RNode = MDHelper.createRange(APInt(16, 1),
       APInt(16, CGF.getTarget().getMaxOpenCLWorkGroupSize() + 1));
@@ -17034,11 +17004,8 @@
   // Indexing the HSA kernel_dispatch_packet struct.
   auto *Offset = llvm::ConstantInt::get(CGF.Int32Ty, XOffset + Index * 4);
   auto *GEP = CGF.Builder.CreateGEP(CGF.Int8Ty, DP, Offset);
-  auto *DstTy =
-      CGF.Int32Ty->getPointerTo(GEP->getType()->getPointerAddressSpace());
-  auto *Cast = CGF.Builder.CreateBitCast(GEP, DstTy);
   auto *LD = CGF.Builder.CreateLoad(
-      Address(Cast, CGF.Int32Ty, CharUnits::fromQuantity(4)));
+      Address(GEP, CGF.Int32Ty, CharUnits::fromQuantity(4)));
   LD->setMetadata(llvm::LLVMContext::MD_invariant_load,
                   llvm::MDNode::get(CGF.getLLVMContext(), std::nullopt));
   return LD;
@@ -19846,8 +19813,7 @@
     // generate one (NewBase). The new base address needs to be stored.
     llvm::Value *NewBase = IsLoad ? Builder.CreateExtractValue(Result, 1)
                                   : Result;
-    llvm::Value *LV = Builder.CreateBitCast(
-        EmitScalarExpr(E->getArg(0)), NewBase->getType()->getPointerTo());
+    llvm::Value *LV = EmitScalarExpr(E->getArg(0));
     Address Dest = EmitPointerWithAlignment(E->getArg(0));
     llvm::Value *RetVal =
         Builder.CreateAlignedStore(NewBase, LV, Dest.getAlignment());
@@ -19888,9 +19854,7 @@
     // to be handled with stores of respective destination type.
     DestVal = Builder.CreateTrunc(DestVal, DestTy);
 
-    llvm::Value *DestForStore =
-        Builder.CreateBitCast(DestAddress, DestVal->getType()->getPointerTo());
-    Builder.CreateAlignedStore(DestVal, DestForStore, DestAddr.getAlignment());
+    Builder.CreateAlignedStore(DestVal, DestAddress, DestAddr.getAlignment());
     // The updated value of the base pointer is returned.
     return Builder.CreateExtractValue(Result, 1);
   };
diff --git a/clang/lib/CodeGen/CGCUDANV.cpp b/clang/lib/CodeGen/CGCUDANV.cpp
--- a/clang/lib/CodeGen/CGCUDANV.cpp
+++ b/clang/lib/CodeGen/CGCUDANV.cpp
@@ -237,7 +237,7 @@
 
   CharPtrTy = llvm::PointerType::getUnqual(Types.ConvertType(Ctx.CharTy));
   VoidPtrTy = cast<llvm::PointerType>(Types.ConvertType(Ctx.VoidPtrTy));
-  VoidPtrPtrTy = VoidPtrTy->getPointerTo();
+  VoidPtrPtrTy = llvm::PointerType::get(CGM.getLLVMContext(), 0);
 }
 
 llvm::FunctionCallee CGNVCUDARuntime::getSetupArgumentFn() const {
@@ -268,10 +268,9 @@
 }
 
 llvm::FunctionType *CGNVCUDARuntime::getRegisterLinkedBinaryFnTy() const {
-  auto *CallbackFnTy = getCallbackFnTy();
   auto *RegisterGlobalsFnTy = getRegisterGlobalsFnTy();
-  llvm::Type *Params[] = {RegisterGlobalsFnTy->getPointerTo(), VoidPtrTy,
-                          VoidPtrTy, CallbackFnTy->getPointerTo()};
+  llvm::Type *Params[] = {llvm::PointerType::getUnqual(RegisterGlobalsFnTy), VoidPtrTy,
+                          VoidPtrTy, llvm::PointerType::get(Context, 0)};
   return llvm::FunctionType::get(VoidTy, Params, false);
 }
 
@@ -538,7 +537,7 @@
   //                             int, uint3*, uint3*, dim3*, dim3*, int*)
   llvm::Type *RegisterFuncParams[] = {
       VoidPtrPtrTy, CharPtrTy, CharPtrTy, CharPtrTy, IntTy,
-      VoidPtrTy,    VoidPtrTy, VoidPtrTy, VoidPtrTy, IntTy->getPointerTo()};
+      VoidPtrTy,    VoidPtrTy, VoidPtrTy, VoidPtrTy, llvm::PointerType::getUnqual(IntTy)};
   llvm::FunctionCallee RegisterFunc = CGM.CreateRuntimeFunction(
       llvm::FunctionType::get(IntTy, RegisterFuncParams, false),
       addUnderscoredPrefixToName("RegisterFunction"));
@@ -561,7 +560,7 @@
         NullPtr,
         NullPtr,
         NullPtr,
-        llvm::ConstantPointerNull::get(IntTy->getPointerTo())};
+        llvm::ConstantPointerNull::get(llvm::PointerType::get(Context, 0))};
     Builder.CreateCall(RegisterFunc, Args);
   }
 
diff --git a/clang/lib/CodeGen/CGCXX.cpp b/clang/lib/CodeGen/CGCXX.cpp
--- a/clang/lib/CodeGen/CGCXX.cpp
+++ b/clang/lib/CodeGen/CGCXX.cpp
@@ -131,17 +131,8 @@
   if (Replacements.count(MangledName))
     return false;
 
-  // Derive the type for the alias.
-  llvm::Type *AliasValueType = getTypes().GetFunctionType(AliasDecl);
-  llvm::PointerType *AliasType = AliasValueType->getPointerTo();
-
-  // Find the referent.  Some aliases might require a bitcast, in
-  // which case the caller is responsible for ensuring the soundness
-  // of these semantics.
-  auto *Ref = cast<llvm::GlobalValue>(GetAddrOfGlobal(TargetDecl));
-  llvm::Constant *Aliasee = Ref;
-  if (Ref->getType() != AliasType)
-    Aliasee = llvm::ConstantExpr::getBitCast(Ref, AliasType);
+  // Find the referent.
+  auto *Aliasee = cast<llvm::GlobalValue>(GetAddrOfGlobal(TargetDecl));
 
   // Instead of creating as alias to a linkonce_odr, replace all of the uses
   // of the aliasee.
@@ -170,7 +161,7 @@
   // If we don't have a definition for the destructor yet or the definition is
   // avaialable_externally, don't emit an alias.  We can't emit aliases to
   // declarations; that's just not how aliases work.
-  if (Ref->isDeclarationForLinker())
+  if (Aliasee->isDeclarationForLinker())
     return true;
 
   // Don't create an alias to a linker weak symbol. This avoids producing
@@ -181,6 +172,7 @@
     return true;
 
   // Create the alias with no name.
+  llvm::Type *AliasValueType = getTypes().GetFunctionType(AliasDecl);
   auto *Alias = llvm::GlobalAlias::create(AliasValueType, 0, Linkage, "",
                                           Aliasee, &getModule());
 
@@ -189,7 +181,8 @@
 
   // Switch any previous uses to the alias.
   if (Entry) {
-    assert(Entry->getType() == AliasType &&
+    assert(Entry->getValueType() == AliasValueType &&
+           Entry->getAddressSpace() == Alias->getAddressSpace() &&
            "declaration exists with different type");
     Alias->takeName(Entry);
     Entry->replaceAllUsesWith(Alias);
@@ -252,8 +245,7 @@
          "No kext in Microsoft ABI");
   CodeGenModule &CGM = CGF.CGM;
   llvm::Value *VTable = CGM.getCXXABI().getAddrOfVTable(RD, CharUnits());
-  Ty = Ty->getPointerTo();
-  VTable = CGF.Builder.CreateBitCast(VTable, Ty->getPointerTo());
+  Ty = llvm::PointerType::get(CGM.getLLVMContext(), 0);
   assert(VTable && "BuildVirtualCall = kext vtbl pointer is null");
   uint64_t VTableIndex = CGM.getItaniumVTableContext().getMethodVTableIndex(GD);
   const VTableLayout &VTLayout = CGM.getItaniumVTableContext().getVTableLayout(RD);
diff --git a/clang/lib/CodeGen/CGCXXABI.cpp b/clang/lib/CodeGen/CGCXXABI.cpp
--- a/clang/lib/CodeGen/CGCXXABI.cpp
+++ b/clang/lib/CodeGen/CGCXXABI.cpp
@@ -46,11 +46,9 @@
 
   ThisPtrForCall = This.getPointer();
   const auto *FPT = MPT->getPointeeType()->castAs<FunctionProtoType>();
-  const auto *RD =
-      cast<CXXRecordDecl>(MPT->getClass()->castAs<RecordType>()->getDecl());
-  llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(
-      CGM.getTypes().arrangeCXXMethodType(RD, FPT, /*FD=*/nullptr));
-  llvm::Constant *FnPtr = llvm::Constant::getNullValue(FTy->getPointerTo());
+  llvm::Constant *FnPtr =
+    llvm::Constant::getNullValue(
+      llvm::PointerType::get(CGM.getLLVMContext(), 0));
   return CGCallee::forDirect(FnPtr, FPT);
 }
 
@@ -59,8 +57,9 @@
                                        Address Base, llvm::Value *MemPtr,
                                        const MemberPointerType *MPT) {
   ErrorUnsupportedABI(CGF, "loads of member pointers");
-  llvm::Type *Ty = CGF.ConvertType(MPT->getPointeeType())
-                         ->getPointerTo(Base.getAddressSpace());
+  llvm::Type *Ty =
+    llvm::PointerType::get(CGF.getLLVMContext(),
+                           Base.getAddressSpace());
   return llvm::Constant::getNullValue(Ty);
 }
 
diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -272,8 +272,6 @@
 
   // Apply the base offset.
   llvm::Value *ptr = addr.getPointer();
-  unsigned AddrSpace = ptr->getType()->getPointerAddressSpace();
-  ptr = CGF.Builder.CreateBitCast(ptr, CGF.Int8Ty->getPointerTo(AddrSpace));
   ptr = CGF.Builder.CreateInBoundsGEP(CGF.Int8Ty, ptr, baseOffset, "add.ptr");
 
   // If we have a virtual component, the alignment of the result will
@@ -329,8 +327,9 @@
 
   // Get the base pointer type.
   llvm::Type *BaseValueTy = ConvertType((PathEnd[-1])->getType());
-  llvm::Type *BasePtrTy =
-      BaseValueTy->getPointerTo(Value.getType()->getPointerAddressSpace());
+  llvm::Type *PtrTy =
+      llvm::PointerType::get(CGM.getLLVMContext(),
+                             Value.getType()->getPointerAddressSpace());
 
   QualType DerivedTy = getContext().getRecordType(Derived);
   CharUnits DerivedAlign = CGM.getClassPointerAlignment(Derived);
@@ -389,9 +388,9 @@
     Builder.CreateBr(endBB);
     EmitBlock(endBB);
 
-    llvm::PHINode *PHI = Builder.CreatePHI(BasePtrTy, 2, "cast.result");
+    llvm::PHINode *PHI = Builder.CreatePHI(PtrTy, 2, "cast.result");
     PHI->addIncoming(Value.getPointer(), notNullBB);
-    PHI->addIncoming(llvm::Constant::getNullValue(BasePtrTy), origBB);
+    PHI->addIncoming(llvm::Constant::getNullValue(PtrTy), origBB);
     Value = Value.withPointer(PHI, NotKnownNonNull);
   }
 
@@ -410,7 +409,7 @@
     getContext().getCanonicalType(getContext().getTagDeclType(Derived));
   unsigned AddrSpace = BaseAddr.getAddressSpace();
   llvm::Type *DerivedValueTy = ConvertType(DerivedTy);
-  llvm::Type *DerivedPtrTy = DerivedValueTy->getPointerTo(AddrSpace);
+  llvm::Type *DerivedPtrTy = llvm::PointerType::get(getLLVMContext(), AddrSpace);
 
   llvm::Value *NonVirtualOffset =
     CGM.GetNonVirtualBaseClassOffset(Derived, PathBegin, PathEnd);
@@ -2579,18 +2578,13 @@
   // Finally, store the address point. Use the same LLVM types as the field to
   // support optimization.
   unsigned GlobalsAS = CGM.getDataLayout().getDefaultGlobalsAddressSpace();
-  unsigned ProgAS = CGM.getDataLayout().getProgramAddressSpace();
-  llvm::Type *VTablePtrTy =
-      llvm::FunctionType::get(CGM.Int32Ty, /*isVarArg=*/true)
-          ->getPointerTo(ProgAS)
-          ->getPointerTo(GlobalsAS);
+  llvm::Type *PtrTy = llvm::PointerType::get(CGM.getLLVMContext(), GlobalsAS);
   // vtable field is derived from `this` pointer, therefore they should be in
   // the same addr space. Note that this might not be LLVM address space 0.
-  VTableField = Builder.CreateElementBitCast(VTableField, VTablePtrTy);
-  VTableAddressPoint = Builder.CreateBitCast(VTableAddressPoint, VTablePtrTy);
+  VTableField = Builder.CreateElementBitCast(VTableField, PtrTy);
 
   llvm::StoreInst *Store = Builder.CreateStore(VTableAddressPoint, VTableField);
-  TBAAAccessInfo TBAAInfo = CGM.getTBAAVTablePtrAccessInfo(VTablePtrTy);
+  TBAAAccessInfo TBAAInfo = CGM.getTBAAVTablePtrAccessInfo(PtrTy);
   CGM.DecorateInstructionWithTBAA(Store, TBAAInfo);
   if (CGM.getCodeGenOpts().OptimizationLevel > 0 &&
       CGM.getCodeGenOpts().StrictVTablePointers)
diff --git a/clang/lib/CodeGen/CGDecl.cpp b/clang/lib/CodeGen/CGDecl.cpp
--- a/clang/lib/CodeGen/CGDecl.cpp
+++ b/clang/lib/CodeGen/CGDecl.cpp
@@ -292,7 +292,7 @@
   if (AS != ExpectedAS) {
     Addr = getTargetCodeGenInfo().performAddrSpaceCast(
         *this, GV, AS, ExpectedAS,
-        LTy->getPointerTo(getContext().getTargetAddressSpace(ExpectedAS)));
+        llvm::PointerType::get(getLLVMContext(), getContext().getTargetAddressSpace(ExpectedAS)));
   }
 
   setStaticLocalDeclAddress(&D, Addr);
@@ -2513,7 +2513,7 @@
       assert(getContext().getTargetAddressSpace(SrcLangAS) ==
              CGM.getDataLayout().getAllocaAddrSpace());
       auto DestAS = getContext().getTargetAddressSpace(DestLangAS);
-      auto *T = DeclPtr.getElementType()->getPointerTo(DestAS);
+      auto *T = llvm::PointerType::get(getLLVMContext(), DestAS);
       DeclPtr =
           DeclPtr.withPointer(getTargetHooks().performAddrSpaceCast(
                                   *this, V, SrcLangAS, DestLangAS, T, true),
diff --git a/clang/lib/CodeGen/CGDeclCXX.cpp b/clang/lib/CodeGen/CGDeclCXX.cpp
--- a/clang/lib/CodeGen/CGDeclCXX.cpp
+++ b/clang/lib/CodeGen/CGDeclCXX.cpp
@@ -122,7 +122,8 @@
     if (CGF.getContext().getLangOpts().OpenCL) {
       auto DestAS =
           CGM.getTargetCodeGenInfo().getAddrSpaceOfCxaAtexitPtrParam();
-      auto DestTy = CGF.getTypes().ConvertType(Type)->getPointerTo(
+      auto DestTy = llvm::PointerType::get(
+          CGM.getLLVMContext(),
           CGM.getContext().getTargetAddressSpace(DestAS));
       auto SrcAS = D.getType().getQualifiers().getAddressSpace();
       if (DestAS == SrcAS)
@@ -132,8 +133,7 @@
         // of the global destructor function should be adjusted accordingly.
         Argument = llvm::ConstantPointerNull::get(DestTy);
     } else {
-      Argument = llvm::ConstantExpr::getBitCast(
-          Addr.getPointer(), CGF.getTypes().ConvertType(Type)->getPointerTo());
+      Argument = Addr.getPointer();
     }
   // Otherwise, the standard logic requires a helper function.
   } else {
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -2101,7 +2101,6 @@
     // pointer is stored in the second field. So, GEP 20 bytes backwards and
     // load the pointer.
     SEHInfo = Builder.CreateConstInBoundsGEP1_32(Int8Ty, EntryFP, -20);
-    SEHInfo = Builder.CreateBitCast(SEHInfo, Int8PtrTy->getPointerTo());
     SEHInfo = Builder.CreateAlignedLoad(Int8PtrTy, SEHInfo, getPointerAlign());
     SEHCodeSlotStack.push_back(recoverAddrOfEscapedLocal(
         ParentCGF, ParentCGF.SEHCodeSlotStack.back(), ParentFP));
@@ -2114,11 +2113,10 @@
   //   CONTEXT *ContextRecord;
   // };
   // int exceptioncode = exception_pointers->ExceptionRecord->ExceptionCode;
-  llvm::Type *RecordTy = CGM.Int32Ty->getPointerTo();
-  llvm::Type *PtrsTy = llvm::StructType::get(RecordTy, CGM.VoidPtrTy);
-  llvm::Value *Ptrs = Builder.CreateBitCast(SEHInfo, PtrsTy->getPointerTo());
-  llvm::Value *Rec = Builder.CreateStructGEP(PtrsTy, Ptrs, 0);
-  Rec = Builder.CreateAlignedLoad(RecordTy, Rec, getPointerAlign());
+  llvm::Type *PtrTy = llvm::PointerType::get(getLLVMContext(), 0);
+  llvm::Type *PtrsTy = llvm::StructType::get(PtrTy, CGM.VoidPtrTy);
+  llvm::Value *Rec = Builder.CreateStructGEP(PtrsTy, SEHInfo, 0);
+  Rec = Builder.CreateAlignedLoad(PtrTy, Rec, getPointerAlign());
   llvm::Value *Code = Builder.CreateAlignedLoad(Int32Ty, Rec, getIntAlign());
   assert(!SEHCodeSlotStack.empty() && "emitting EH code outside of __except");
   Builder.CreateStore(Code, SEHCodeSlotStack.back());
diff --git a/clang/lib/CodeGen/CGExprCXX.cpp b/clang/lib/CodeGen/CGExprCXX.cpp
--- a/clang/lib/CodeGen/CGExprCXX.cpp
+++ b/clang/lib/CodeGen/CGExprCXX.cpp
@@ -2195,13 +2195,12 @@
 }
 
 llvm::Value *CodeGenFunction::EmitCXXTypeidExpr(const CXXTypeidExpr *E) {
-  llvm::Type *StdTypeInfoPtrTy =
-    ConvertType(E->getType())->getPointerTo();
+  llvm::Type *PtrTy = llvm::PointerType::get(getLLVMContext(), 0);
 
   if (E->isTypeOperand()) {
     llvm::Constant *TypeInfo =
         CGM.GetAddrOfRTTIDescriptor(E->getTypeOperand(getContext()));
-    return Builder.CreateBitCast(TypeInfo, StdTypeInfoPtrTy);
+    return TypeInfo;
   }
 
   // C++ [expr.typeid]p2:
@@ -2211,12 +2210,10 @@
   //   type) to which the glvalue refers.
   // If the operand is already most derived object, no need to look up vtable.
   if (E->isPotentiallyEvaluated() && !E->isMostDerived(getContext()))
-    return EmitTypeidFromVTable(*this, E->getExprOperand(),
-                                StdTypeInfoPtrTy);
+    return EmitTypeidFromVTable(*this, E->getExprOperand(), PtrTy);
 
   QualType OperandTy = E->getExprOperand()->getType();
-  return Builder.CreateBitCast(CGM.GetAddrOfRTTIDescriptor(OperandTy),
-                               StdTypeInfoPtrTy);
+  return CGM.GetAddrOfRTTIDescriptor(OperandTy);
 }
 
 static llvm::Value *EmitDynamicCastToNull(CodeGenFunction &CGF,
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -1833,9 +1833,6 @@
       return C;
 
     llvm::Type *origPtrTy = C->getType();
-    unsigned AS = origPtrTy->getPointerAddressSpace();
-    llvm::Type *charPtrTy = CGM.Int8Ty->getPointerTo(AS);
-    C = llvm::ConstantExpr::getBitCast(C, charPtrTy);
     C = llvm::ConstantExpr::getGetElementPtr(CGM.Int8Ty, C, getOffset());
     C = llvm::ConstantExpr::getPointerCast(C, origPtrTy);
     return C;
@@ -1946,12 +1943,8 @@
 
   // Handle typeid(T).
   if (TypeInfoLValue TI = base.dyn_cast<TypeInfoLValue>()) {
-    llvm::Type *StdTypeInfoPtrTy =
-        CGM.getTypes().ConvertType(base.getTypeInfoType())->getPointerTo();
     llvm::Constant *TypeInfo =
         CGM.GetAddrOfRTTIDescriptor(QualType(TI.getType(), 0));
-    if (TypeInfo->getType() != StdTypeInfoPtrTy)
-      TypeInfo = llvm::ConstantExpr::getBitCast(TypeInfo, StdTypeInfoPtrTy);
     return TypeInfo;
   }
 
diff --git a/clang/lib/CodeGen/CGObjCRuntime.cpp b/clang/lib/CodeGen/CGObjCRuntime.cpp
--- a/clang/lib/CodeGen/CGObjCRuntime.cpp
+++ b/clang/lib/CodeGen/CGObjCRuntime.cpp
@@ -370,7 +370,8 @@
       CGM.getTypes().arrangeObjCMessageSendSignature(method, callArgs[0].Ty);
 
     llvm::PointerType *signatureType =
-      CGM.getTypes().GetFunctionType(signature)->getPointerTo(ProgramAS);
+      llvm::PointerType::get(CGM.getTypes().GetFunctionType(signature),
+                             ProgramAS);
 
     const CGFunctionInfo &signatureForCall =
       CGM.getTypes().arrangeCall(signature, callArgs);
@@ -384,7 +385,8 @@
 
   // Derive the signature to call from that.
   llvm::PointerType *signatureType =
-    CGM.getTypes().GetFunctionType(argsInfo)->getPointerTo(ProgramAS);
+    llvm::PointerType::get(CGM.getTypes().GetFunctionType(argsInfo),
+                           ProgramAS);
   return MessageSendInfo(argsInfo, signatureType);
 }
 
diff --git a/clang/lib/CodeGen/CodeGenTypes.cpp b/clang/lib/CodeGen/CodeGenTypes.cpp
--- a/clang/lib/CodeGen/CodeGenTypes.cpp
+++ b/clang/lib/CodeGen/CodeGenTypes.cpp
@@ -765,12 +765,9 @@
   }
 
   case Type::ObjCObjectPointer: {
-    // Protocol qualifications do not influence the LLVM type, we just return a
-    // pointer to the underlying interface type. We don't need to worry about
-    // recursive conversion.
-    llvm::Type *T =
-      ConvertTypeForMem(cast<ObjCObjectPointerType>(Ty)->getPointeeType());
-    ResultType = T->getPointerTo();
+    // Protocol qualifications do not influence the LLVM type.
+    // We don't need to worry about recursive conversion.
+    ResultType = llvm::PointerType::get(getLLVMContext(), 0);
     break;
   }
 
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -584,9 +584,6 @@
   auto *RD =
       cast<CXXRecordDecl>(MPT->getClass()->castAs<RecordType>()->getDecl());
 
-  llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(
-      CGM.getTypes().arrangeCXXMethodType(RD, FPT, /*FD=*/nullptr));
-
   llvm::Constant *ptrdiff_1 = llvm::ConstantInt::get(CGM.PtrDiffTy, 1);
 
   llvm::BasicBlock *FnVirtual = CGF.createBasicBlock("memptr.virtual");
@@ -687,8 +684,6 @@
           {VFPAddr, llvm::ConstantInt::get(CGM.Int32Ty, 0), TypeId});
       CheckResult = Builder.CreateExtractValue(CheckedLoad, 1);
       VirtualFn = Builder.CreateExtractValue(CheckedLoad, 0);
-      VirtualFn = Builder.CreateBitCast(VirtualFn, FTy->getPointerTo(),
-                                        "memptr.virtualfn");
     } else {
       // When not doing VFE, emit a normal load, as it allows more
       // optimisations than type.checked.load.
@@ -709,14 +704,11 @@
             CGM.getIntrinsic(llvm::Intrinsic::load_relative,
                              {VTableOffset->getType()}),
             {VTable, VTableOffset});
-        VirtualFn = CGF.Builder.CreateBitCast(VirtualFn, FTy->getPointerTo());
       } else {
         llvm::Value *VFPAddr =
             CGF.Builder.CreateGEP(CGF.Int8Ty, VTable, VTableOffset);
-        VFPAddr = CGF.Builder.CreateBitCast(
-            VFPAddr, FTy->getPointerTo()->getPointerTo());
         VirtualFn = CGF.Builder.CreateAlignedLoad(
-            FTy->getPointerTo(), VFPAddr, CGF.getPointerAlign(),
+            llvm::PointerType::get(CGF.getLLVMContext(), 0), VFPAddr, CGF.getPointerAlign(),
             "memptr.virtualfn");
       }
     }
@@ -758,7 +750,7 @@
   // function pointer.
   CGF.EmitBlock(FnNonVirtual);
   llvm::Value *NonVirtualFn =
-    Builder.CreateIntToPtr(FnAsInt, FTy->getPointerTo(), "memptr.nonvirtualfn");
+    Builder.CreateIntToPtr(FnAsInt, llvm::PointerType::get(CGF.getLLVMContext(), 0), "memptr.nonvirtualfn");
 
   // Check the function pointer if CFI on member function pointers is enabled.
   if (ShouldEmitCFICheck) {
@@ -799,7 +791,8 @@
 
   // We're done.
   CGF.EmitBlock(FnEnd);
-  llvm::PHINode *CalleePtr = Builder.CreatePHI(FTy->getPointerTo(), 2);
+  llvm::PHINode *CalleePtr =
+    Builder.CreatePHI(llvm::PointerType::get(CGF.getLLVMContext(), 0), 2);
   CalleePtr->addIncoming(VirtualFn, FnVirtual);
   CalleePtr->addIncoming(NonVirtualFn, FnNonVirtual);
 
@@ -822,12 +815,7 @@
   // Apply the offset, which we assume is non-null.
   llvm::Value *Addr = Builder.CreateInBoundsGEP(
       Base.getElementType(), Base.getPointer(), MemPtr, "memptr.offset");
-
-  // Cast the address to the appropriate pointer type, adopting the
-  // address space of the base pointer.
-  llvm::Type *PType = CGF.ConvertTypeForMem(MPT->getPointeeType())
-                            ->getPointerTo(Base.getAddressSpace());
-  return Builder.CreateBitCast(Addr, PType);
+  return Addr;
 }
 
 /// Perform a bitcast, derived-to-base, or base-to-derived member pointer
@@ -1213,7 +1201,7 @@
     auto *ClassDecl =
         cast<CXXRecordDecl>(ElementType->castAs<RecordType>()->getDecl());
     llvm::Value *VTable =
-        CGF.GetVTablePtr(Ptr, CGF.IntPtrTy->getPointerTo(), ClassDecl);
+        CGF.GetVTablePtr(Ptr, llvm::PointerType::get(CGF.getLLVMContext(), 0), ClassDecl);
 
     // Track back to entry -2 and pull out the offset there.
     llvm::Value *OffsetPtr = CGF.Builder.CreateConstInBoundsGEP1_64(
@@ -1418,7 +1406,7 @@
   auto *ClassDecl =
       cast<CXXRecordDecl>(SrcRecordTy->castAs<RecordType>()->getDecl());
   llvm::Value *Value =
-      CGF.GetVTablePtr(ThisPtr, StdTypeInfoPtrTy->getPointerTo(), ClassDecl);
+      CGF.GetVTablePtr(ThisPtr, llvm::PointerType::get(CGF.getLLVMContext(), 0), ClassDecl);
 
   if (CGM.getItaniumVTableContext().isRelativeLayout()) {
     // Load the type info.
@@ -1426,9 +1414,6 @@
     Value = CGF.Builder.CreateCall(
         CGM.getIntrinsic(llvm::Intrinsic::load_relative, {CGM.Int32Ty}),
         {Value, llvm::ConstantInt::get(CGM.Int32Ty, -4)});
-
-    // Setup to dereference again since this is a proxy we accessed.
-    Value = CGF.Builder.CreateBitCast(Value, StdTypeInfoPtrTy->getPointerTo());
   } else {
     // Load the type info.
     Value =
@@ -1497,7 +1482,7 @@
   if (CGM.getItaniumVTableContext().isRelativeLayout()) {
     // Get the vtable pointer.
     llvm::Value *VTable =
-        CGF.GetVTablePtr(ThisAddr, CGM.Int32Ty->getPointerTo(), ClassDecl);
+        CGF.GetVTablePtr(ThisAddr, llvm::PointerType::get(CGF.getLLVMContext(), 0), ClassDecl);
 
     // Get the offset-to-top from the vtable.
     OffsetToTop =
@@ -1510,7 +1495,7 @@
 
     // Get the vtable pointer.
     llvm::Value *VTable =
-        CGF.GetVTablePtr(ThisAddr, PtrDiffLTy->getPointerTo(), ClassDecl);
+        CGF.GetVTablePtr(ThisAddr, llvm::PointerType::get(CGF.getLLVMContext(), 0), ClassDecl);
 
     // Get the offset-to-top from the vtable.
     OffsetToTop =
@@ -1549,14 +1534,10 @@
 
   llvm::Value *VBaseOffset;
   if (CGM.getItaniumVTableContext().isRelativeLayout()) {
-    VBaseOffsetPtr =
-        CGF.Builder.CreateBitCast(VBaseOffsetPtr, CGF.Int32Ty->getPointerTo());
     VBaseOffset = CGF.Builder.CreateAlignedLoad(
         CGF.Int32Ty, VBaseOffsetPtr, CharUnits::fromQuantity(4),
         "vbase.offset");
   } else {
-    VBaseOffsetPtr = CGF.Builder.CreateBitCast(VBaseOffsetPtr,
-                                               CGM.PtrDiffTy->getPointerTo());
     VBaseOffset = CGF.Builder.CreateAlignedLoad(
         CGM.PtrDiffTy, VBaseOffsetPtr, CGF.getPointerAlign(), "vbase.offset");
   }
@@ -1922,16 +1903,16 @@
                                                   Address This,
                                                   llvm::Type *Ty,
                                                   SourceLocation Loc) {
-  llvm::Type *TyPtr = Ty->getPointerTo();
+  llvm::Type *PtrTy = llvm::PointerType::get(CGF.getLLVMContext(), 0);
   auto *MethodDecl = cast<CXXMethodDecl>(GD.getDecl());
   llvm::Value *VTable = CGF.GetVTablePtr(
-      This, TyPtr->getPointerTo(), MethodDecl->getParent());
+      This, PtrTy, MethodDecl->getParent());
 
   uint64_t VTableIndex = CGM.getItaniumVTableContext().getMethodVTableIndex(GD);
   llvm::Value *VFunc;
   if (CGF.ShouldEmitVTableTypeCheckedLoad(MethodDecl->getParent())) {
     VFunc = CGF.EmitVTableTypeCheckedLoad(
-        MethodDecl->getParent(), VTable, TyPtr,
+        MethodDecl->getParent(), VTable, PtrTy,
         VTableIndex *
             CGM.getContext().getTargetInfo().getPointerWidth(LangAS::Default) /
             8);
@@ -1940,18 +1921,15 @@
 
     llvm::Value *VFuncLoad;
     if (CGM.getItaniumVTableContext().isRelativeLayout()) {
-      VTable = CGF.Builder.CreateBitCast(VTable, CGM.Int8PtrTy);
       llvm::Value *Load = CGF.Builder.CreateCall(
           CGM.getIntrinsic(llvm::Intrinsic::load_relative, {CGM.Int32Ty}),
           {VTable, llvm::ConstantInt::get(CGM.Int32Ty, 4 * VTableIndex)});
-      VFuncLoad = CGF.Builder.CreateBitCast(Load, TyPtr);
+      VFuncLoad = Load;
     } else {
-      VTable =
-          CGF.Builder.CreateBitCast(VTable, TyPtr->getPointerTo());
       llvm::Value *VTableSlotPtr = CGF.Builder.CreateConstInBoundsGEP1_64(
-          TyPtr, VTable, VTableIndex, "vfn");
+          PtrTy, VTable, VTableIndex, "vfn");
       VFuncLoad =
-          CGF.Builder.CreateAlignedLoad(TyPtr, VTableSlotPtr,
+          CGF.Builder.CreateAlignedLoad(PtrTy, VTableSlotPtr,
                                         CGF.getPointerAlign());
     }
 
@@ -2094,8 +2072,6 @@
         CGF.Int8Ty, VTablePtr, VirtualAdjustment);
     if (CGF.CGM.getItaniumVTableContext().isRelativeLayout()) {
       // Load the adjustment offset from the vtable as a 32-bit int.
-      OffsetPtr =
-          CGF.Builder.CreateBitCast(OffsetPtr, CGF.Int32Ty->getPointerTo());
       Offset =
           CGF.Builder.CreateAlignedLoad(CGF.Int32Ty, OffsetPtr,
                                         CharUnits::fromQuantity(4));
@@ -2103,9 +2079,6 @@
       llvm::Type *PtrDiffTy =
           CGF.ConvertType(CGF.getContext().getPointerDiffType());
 
-      OffsetPtr =
-          CGF.Builder.CreateBitCast(OffsetPtr, PtrDiffTy->getPointerTo());
-
       // Load the adjustment offset from the vtable.
       Offset = CGF.Builder.CreateAlignedLoad(PtrDiffTy, OffsetPtr,
                                              CGF.getPointerAlign());
@@ -2230,7 +2203,7 @@
   // We can't simply ignore this load using nosanitize metadata because
   // the metadata may be lost.
   llvm::FunctionType *FTy =
-      llvm::FunctionType::get(CGF.SizeTy, CGF.SizeTy->getPointerTo(0), false);
+      llvm::FunctionType::get(CGF.SizeTy, llvm::PointerType::get(CGF.getLLVMContext(), 0), false);
   llvm::FunctionCallee F =
       CGM.CreateRuntimeFunction(FTy, "__asan_load_cxx_array_cookie");
   return CGF.Builder.CreateCall(F, numElementsPtr.getPointer());
@@ -2380,8 +2353,8 @@
           CharUnits::fromQuantity(CGM.getDataLayout().getABITypeAlign(guardTy));
     }
   }
-  llvm::PointerType *guardPtrTy = guardTy->getPointerTo(
-      CGF.CGM.getDataLayout().getDefaultGlobalsAddressSpace());
+  llvm::PointerType *guardPtrTy =
+      llvm::PointerType::get(CGF.CGM.getLLVMContext(), CGF.CGM.getDataLayout().getDefaultGlobalsAddressSpace());
 
   // Create the guard variable if we don't already have it (as we
   // might if we're double-emitting this function body).
@@ -2571,15 +2544,14 @@
   }
 
   // We're assuming that the destructor function is something we can
-  // reasonably call with the default CC.  Go ahead and cast it to the
-  // right prototype.
+  // reasonably call with the default CC.
   llvm::Type *dtorTy =
-    llvm::FunctionType::get(CGF.VoidTy, CGF.Int8PtrTy, false)->getPointerTo();
+    llvm::PointerType::get(CGF.getLLVMContext(), 0);
 
   // Preserve address space of addr.
   auto AddrAS = addr ? addr->getType()->getPointerAddressSpace() : 0;
-  auto AddrInt8PtrTy =
-      AddrAS ? CGF.Int8Ty->getPointerTo(AddrAS) : CGF.Int8PtrTy;
+  auto AddrPtrTy =
+    AddrAS ? llvm::PointerType::get(CGF.getLLVMContext(), AddrAS) : CGF.Int8PtrTy;
 
   // Create a variable that binds the atexit to this shared object.
   llvm::Constant *handle =
@@ -2588,7 +2560,7 @@
   GV->setVisibility(llvm::GlobalValue::HiddenVisibility);
 
   // extern "C" int __cxa_atexit(void (*f)(void *), void *p, void *d);
-  llvm::Type *paramTys[] = {dtorTy, AddrInt8PtrTy, handle->getType()};
+  llvm::Type *paramTys[] = {dtorTy, AddrPtrTy, handle->getType()};
   llvm::FunctionType *atexitTy =
     llvm::FunctionType::get(CGF.IntTy, paramTys, false);
 
@@ -2604,10 +2576,7 @@
     // function.
     addr = llvm::Constant::getNullValue(CGF.Int8PtrTy);
 
-  llvm::Value *args[] = {llvm::ConstantExpr::getBitCast(
-                             cast<llvm::Constant>(dtor.getCallee()), dtorTy),
-                         llvm::ConstantExpr::getBitCast(addr, AddrInt8PtrTy),
-                         handle};
+  llvm::Value *args[] = {dtor.getCallee(), addr, handle};
   CGF.EmitNounwindRuntimeCall(atexit, args);
 }
 
@@ -2639,7 +2608,6 @@
 
     // Get the destructor function type, void(*)(void).
     llvm::FunctionType *dtorFuncTy = llvm::FunctionType::get(CGF.VoidTy, false);
-    llvm::Type *dtorTy = dtorFuncTy->getPointerTo();
 
     // Destructor functions are run/unregistered in non-ascending
     // order of their priorities.
@@ -2649,10 +2617,8 @@
       llvm::Function *Dtor = *itv;
 
       // We're assuming that the destructor function is something we can
-      // reasonably call with the correct CC.  Go ahead and cast it to the
-      // right prototype.
-      llvm::Constant *dtor = llvm::ConstantExpr::getBitCast(Dtor, dtorTy);
-      llvm::Value *V = CGF.unregisterGlobalDtorWithUnAtExit(dtor);
+      // reasonably call with the correct CC.
+      llvm::Value *V = CGF.unregisterGlobalDtorWithUnAtExit(Dtor);
       llvm::Value *NeedsDestruct =
           CGF.Builder.CreateIsNull(V, "needs_destruct");
 
@@ -2667,7 +2633,7 @@
       CGF.EmitBlock(DestructCallBlock);
 
       // Emit the call to casted Dtor.
-      llvm::CallInst *CI = CGF.Builder.CreateCall(dtorFuncTy, dtor);
+      llvm::CallInst *CI = CGF.Builder.CreateCall(dtorFuncTy, Dtor);
       // Make sure the call and the callee agree on calling convention.
       CI->setCallingConv(Dtor->getCallingConv());
 
@@ -2707,15 +2673,9 @@
       if (getCodeGenOpts().CXAAtExit) {
         emitGlobalDtorWithCXAAtExit(CGF, Dtor, nullptr, false);
       } else {
-        // Get the destructor function type, void(*)(void).
-        llvm::Type *dtorTy =
-            llvm::FunctionType::get(CGF.VoidTy, false)->getPointerTo();
-
         // We're assuming that the destructor function is something we can
-        // reasonably call with the correct CC.  Go ahead and cast it to the
-        // right prototype.
-        CGF.registerGlobalDtorWithAtExit(
-            llvm::ConstantExpr::getBitCast(Dtor, dtorTy));
+        // reasonably call with the correct CC.
+        CGF.registerGlobalDtorWithAtExit(Dtor);
       }
     }
 
@@ -4567,10 +4527,7 @@
 
     // Otherwise, it returns a pointer into the exception object.
 
-    llvm::Type *PtrTy = LLVMCatchTy->getPointerTo(0); // addrspace 0 ok
-    llvm::Value *Cast = CGF.Builder.CreateBitCast(AdjustedExn, PtrTy);
-
-    LValue srcLV = CGF.MakeNaturalAlignAddrLValue(Cast, CatchType);
+    LValue srcLV = CGF.MakeNaturalAlignAddrLValue(AdjustedExn, CatchType);
     LValue destLV = CGF.MakeAddrLValue(ParamAddr, CatchType);
     switch (TEK) {
     case TEK_Complex:
@@ -4592,7 +4549,7 @@
   auto catchRD = CatchType->getAsCXXRecordDecl();
   CharUnits caughtExnAlignment = CGF.CGM.getClassPointerAlignment(catchRD);
 
-  llvm::Type *PtrTy = LLVMCatchTy->getPointerTo(0); // addrspace 0 ok
+  llvm::Type *PtrTy = llvm::PointerType::get(CGF.getLLVMContext(), 0); // addrspace 0 ok
 
   // Check for a copy expression.  If we don't have a copy expression,
   // that means a trivial copy is okay.
@@ -4780,14 +4737,11 @@
                                   llvm::FunctionCallee Dtor,
                                   llvm::Constant *Addr) {
   if (D.getTLSKind() != VarDecl::TLS_None) {
-    // atexit routine expects "int(*)(int,...)"
-    llvm::FunctionType *FTy =
-        llvm::FunctionType::get(CGM.IntTy, CGM.IntTy, true);
-    llvm::PointerType *FpTy = FTy->getPointerTo();
+    llvm::PointerType *PtrTy = llvm::PointerType::get(CGF.getLLVMContext(), 0);
 
     // extern "C" int __pt_atexit_np(int flags, int(*)(int,...), ...);
     llvm::FunctionType *AtExitTy =
-        llvm::FunctionType::get(CGM.IntTy, {CGM.IntTy, FpTy}, true);
+        llvm::FunctionType::get(CGM.IntTy, {CGM.IntTy, PtrTy}, true);
 
     // Fetch the actual function.
     llvm::FunctionCallee AtExit =
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -402,7 +402,7 @@
   llvm::Type *DirectTy = CGF.ConvertTypeForMem(ValueTy), *ElementTy = DirectTy;
   if (IsIndirect) {
     unsigned AllocaAS = CGF.CGM.getDataLayout().getAllocaAddrSpace();
-    DirectTy = DirectTy->getPointerTo(AllocaAS);
+    DirectTy = llvm::PointerType::get(CGF.getLLVMContext(), AllocaAS);
   }
 
   Address Addr = emitVoidPtrDirectVAArg(CGF, VAListAddr, DirectTy, DirectSize,
@@ -2042,7 +2042,7 @@
   Info = ABIArgInfo::getInAlloca(FrameFields.size(), IsIndirect);
   llvm::Type *LLTy = CGT.ConvertTypeForMem(Type);
   if (IsIndirect)
-    LLTy = LLTy->getPointerTo(0);
+    LLTy = llvm::PointerType::get(getVMContext(), 0);
   FrameFields.push_back(LLTy);
   StackOffset += IsIndirect ? WordSize : getContext().getTypeSizeInChars(Type);
 
@@ -4851,7 +4851,7 @@
   Builder.CreateCondBr(CC, UsingRegs, UsingOverflow);
 
   llvm::Type *DirectTy = CGF.ConvertType(Ty), *ElementTy = DirectTy;
-  if (isIndirect) DirectTy = DirectTy->getPointerTo(0);
+  if (isIndirect) DirectTy = llvm::PointerType::get(CGF.getLLVMContext(), 0);
 
   // Case 1: consume registers.
   Address RegAddr = Address::invalid();