[llvm] [Transforms][IPO] Add remarks for ArgumentPromotion and DeadArgumentE… (PR #105740)

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yonghong-song wrote:

> That should be pretty useful. Is there a tool that can parse it programmatically or, so far, it's for human consumption only?

Alexei, I know there is a meta internal tool to parse remarks to construct an inlining-decision tree. Maybe upstream have some tools to parse those remarks as well. I am not sure.

https://github.com/llvm/llvm-project/pull/105740