[llvm] [FunctionAttrs] Handle alias-preserving intrinsic calls correctly (PR #68453)

[Nikita Popov via llvm-commits]

nikic wrote:

> This looks like a reasonable improvement to _precision_, but this is not a bug fix.

Reading more carefully, you still fall through to the usual behavior, so it's not an improvement to precision either. So this appears to only be a workaround for an incorrect intrinsic annotation.

https://github.com/llvm/llvm-project/pull/68453