efriedma-quic wrote:

Making Sema pull the TBAA info out of clang/lib/CodeGen is a layering violation 
(and probably breaks if we aren't actually generating code).  If we need some 
notion of "aliasing" in Sema, we should pull the relevant code into 

I don't have any experience with this warning, so I'm not sure how effective it 
is at detecting issues; do a significant fraction of issues actually show up at 
a pure syntactic level?  Do you have any idea what false positive rate we 
should expect?

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