[llvm-dev] Placement new and TBAA

[Hubert Tong via llvm-dev]

I've heard from a few people that placement new is going to be handled by
LLVM using the llvm.invariant.group.barrier intrinsic; however, the
documentation for that intrinsic seems to indicate that it deals with only
invariant.group metadata and not TBAA metadata.

I would like to understand how the solution would work in the context of
https://llvm.org/bugs/show_bug.cgi?format=multiple&id=28767.

-- HT
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