[PATCH] D127471: [Coroutines] Convert coroutine.presplit to enum attr

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu added a comment.

In D127471#3572616 <https://reviews.llvm.org/D127471#3572616>, @nikic wrote:

> You probably want to add this to `llvm::UpgradeAttributes` as well, to maintain support for old bitcode.

Oh, I feel like it is not so meaningful to keep backward compatibility. We've done some break changes before. Since the primary users of LLVM Coroutines are frontends, it shouldn't be hard for them to update.


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  https://reviews.llvm.org/D127471/new/

https://reviews.llvm.org/D127471