[Alignment] Migrate Attribute::getWith(Stack)Alignment

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, jdoerfert

Reviewed By: courbet

Subscribers: arsenm, jvesely, nhaehnle, hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68792

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@374884 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGCall.cpp

@@ -2126,8 +2126,8 @@ void CodeGenModule::ConstructAttributeList(
       if (!PTy->isIncompleteType() && PTy->isConstantSizeType()) {
         auto info = getContext().getTypeInfoInChars(PTy);
         Attrs.addDereferenceableAttr(info.first.getQuantity());
-        Attrs.addAttribute(llvm::Attribute::getWithAlignment(getLLVMContext(),
-                                                 info.second.getQuantity()));
+        Attrs.addAttribute(llvm::Attribute::getWithAlignment(
+            getLLVMContext(), info.second.getAsAlign()));
       }
       break;
     }