[PATCH] D147020: [AA] Add a tbaa-fence intrinsic.

[David Goldblatt via Phabricator via llvm-commits]

davidtgoldblatt added a comment.

I'm also happy to just strengthen this to a pointer-specific fence (that returns void), that acts otherwise just like `asm volatile("" : : "r"(ptr) : "memory")` if that would make this more palatable. The only optimization I have in mind for the pointer-returning version is something to allow folding "store/fence/load" to a bitcast, which I don't think is important enough to be worth spending a lot of time on.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D147020/new/

https://reviews.llvm.org/D147020