[clang] Replace uses of Type::getPointerType (NFC)

Opaque pointer clean-up effort

Author: JOE1994

clang/lib/CodeGen/CodeGenModule.cpp

@@ -4790,7 +4790,8 @@ CodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, llvm::Type *Ty,
   assert(getContext().getTargetAddressSpace(ExpectedAS) == TargetAS);
   if (DAddrSpace != ExpectedAS) {
     return getTargetCodeGenInfo().performAddrSpaceCast(
-        *this, GV, DAddrSpace, ExpectedAS, Ty->getPointerTo(TargetAS));
+        *this, GV, DAddrSpace, ExpectedAS,
+        llvm::PointerType::get(getLLVMContext(), TargetAS));
   }
 
   return GV;
@@ -5002,7 +5003,8 @@ castStringLiteralToDefaultAddressSpace(CodeGenModule &CGM,
     if (AS != LangAS::Default)
       Cast = CGM.getTargetCodeGenInfo().performAddrSpaceCast(
           CGM, GV, AS, LangAS::Default,
-          GV->getValueType()->getPointerTo(
+          llvm::PointerType::get(
+              CGM.getLLVMContext(),
               CGM.getContext().getTargetAddressSpace(LangAS::Default)));
   }
   return Cast;
@@ -6377,7 +6379,8 @@ ConstantAddress CodeGenModule::GetAddrOfGlobalTemporary(
   if (AddrSpace != LangAS::Default)
     CV = getTargetCodeGenInfo().performAddrSpaceCast(
         *this, GV, AddrSpace, LangAS::Default,
-        Type->getPointerTo(
+        llvm::PointerType::get(
+            getLLVMContext(),
             getContext().getTargetAddressSpace(LangAS::Default)));
 
   // Update the map with the new temporary. If we created a placeholder above,