[llvm-dev] lifetime.start/end

[Juneyoung Lee via llvm-dev]

Hello all,

We're discussing the well-formedness of lifetime.start/end intrinsic here (
https://reviews.llvm.org/D93376), deciding what is a (syntactically &
semantically) valid use of these intrinsics.

I'd like to gather more context about the intrinsics.

1. Is there a frontend or framework that introduces lifetime call with
non-stack allocated objects?
If exists, which behavior do they expect from it?

2. Can a block's lifetime be started bytewise or elementwise?
I imagine an optimization that allow using stack very compactly, but wonder
there is a real-world use case.

Thanks,
Juneyoung
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