[llvm] [mlir] [MLIR] Add debug log to the pass manager (NFC) (PR #156205)

[Mehdi Amini via llvm-commits]

joker-eph wrote:

> By force-pushing, we are loosing the history. Specifically, it is impossible to "connect" comments to code updates and, effectively, to understand how this change evolved (and the rationale underlying the design). All in all, it's a tradeoff - the development is much easier, but that comes at a cost of lost history.
>
> I am merely sharing my understanding of our development policies and the rationale behind them - I've been making similar request to other contributors. If you feel that I am misinterpreting our policies, we should probably start a discussion on Discourse and clarify the docs.

We should.

I'm pretty sure this was covered during the migration to GitHub pull-request and this was meant as a **suggestion** and nothing more, I'll do some digging.
At least as I recollect, people like me (and others) who were used to the Phabricator flow were quite adamant to not have to change our local workflow to adopt pull-request: that is GitHub quirks aren't a reason to degrade our development experience.


https://github.com/llvm/llvm-project/pull/156205