[llvm] [Coroutines] Avoid copying memory attributes to generated functions (PR #155611)

[Christian Ulmann via llvm-commits]

Dinistro wrote:

@NewSigma I think we made a mistake in a downstream project. We are generating presplit coroutines from some other constructs and we forgot to drop the attributes. I'll close this PR.

Sorry for the noise.

https://github.com/llvm/llvm-project/pull/155611