dblaikie added a comment.

In D157615#4647235 <https://reviews.llvm.org/D157615#4647235>, @StephenTozer 
wrote:

> In D157615#4646848 <https://reviews.llvm.org/D157615#4646848>, @dblaikie 
> wrote:
>
>> Might be worth rewording the commit, or  splitting it - I'd say the 
>> introduction of `optdebug` should be the noteworthier part of this patch (or 
>> whichever patch introduces it) - so either "this patch adds optdebug, and a 
>> first/exemplar use of it in postra scheduler" or split it into a patch that 
>> just adds the attribute and no uses, and one that adds the use.
>
> SGTM, the scope of this patch has increased as-of the latest update. That 
> being said AFAIK Github PRs don't currently have support for stacked PRs, so 
> I imagine I'll need to have one review up at a time.

Yeah, don't think we have a clear path for stacked PRs right now - so, yeah, 
will try to work through them one at a time. I guess you could post PRs that 
contain all the commits (eg: one review containing commit A, another review 
containing A and B, etc) - it doesn't have a good solution if large changes to 
predecessor patches need updates to latter patches (eg: if A causes invasive 
changes to B) - but otherwise it's probably OK-ish... (& in this case I don't 
think any changes to "adding optdebug" are likely to substantially change the 
nature of subsequent patches). But maybe not a big deal either way/can just 
wait for the subsequent patches.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157615/new/

https://reviews.llvm.org/D157615

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