efriedma added a comment.
getClassPointerAlignment is not really relevant here; that's the alignment of a
pointer to an object with the type of the class.
For the LLVM IR structs which don't have a corresponding clang type, you can
probably just use DataLayout::getABITypeAlignment(). I think that's just the
alignment of a pointer in practice, but the intent is more clear.
================
Comment at: lib/CodeGen/MicrosoftCXXABI.cpp:2027
"vbtable with this name already exists: mangling bug?");
+ unsigned Align = CGM.getClassPointerAlignment(RD).getQuantity();
llvm::GlobalVariable *GV =
----------------
This is an array of `int`.
https://reviews.llvm.org/D51416
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