[llvm] [MemProf] Optionally save context size info on largest cold allocations (PR #142837)

[Hubert Tong via llvm-commits]

hubert-reinterpretcast wrote:

> Reapply PR142507 with fix for test: add in the same x86_64-linux
> requirement as other tests as the stack ids are currently computed
> differently on big endian systems. This will be investigated separately.

Hi @teresajohnson, is there an open issue that tracks this investigation?
What is the expected impact of the difference?

https://github.com/llvm/llvm-project/pull/142837