[PATCH] D26540: [Sema] Accept and ignore the leaf attribute

[Petr Hosek via cfe-commits]

phosek added a comment.

That makes sense for diagnostics, but this attribute is only an optimization hint, so compiler should be allowed to ignore it. I can take a look how difficult it'd be to actually implement this attribute, but I don't think it's Sema-only attribute. I don't know if there's a matching IR function attribute; it seems like `readonly` attribute has similar effect but I'd need to take a look at the exact semantics.


Repository:
  rL LLVM

https://reviews.llvm.org/D26540