ChuanqiXu9 wrote:

> > > This is a great way to start a new year ;)
> > > The phab link is https://reviews.llvm.org/D41416.
> > > In general I was wondering could we simplify the implementation by 
> > > loading the specialization hash table upon module load. That should be 
> > > relatively cheap as we will read 2 integers per specialization.
> > > Perhaps we should put both patches together and that'd allow us to test 
> > > them if they are on par with https://reviews.llvm.org/D41416 which we use 
> > > downstream.
> > > Thanks for working on this!
> > 
> > 
> > Hi Vassilev, for testing purpose I sent 
> > https://github.com/ChuanqiXu9/llvm-project/tree/LoadSpecializationUpdatesLazily.
> >  I didn't create stacked review since I feel a standalone branch may be 
> > sufficient.
> 
> @ChuanqiXu9, I'd prefer to review both patches at the same time. Otherwise we 
> risk of missing some important details.

Got it. I can try to create a stacked review. But from I know about the status 
quo stacked review now, it will require us to lost the current contexnt...

And it will still be pretty valuable if you can test this with your internal 
workloads, then may be we can find something pretty important in the high level 
before going into the details. I've tested this in our local workloads, and it 
looks good and the performance improvements remains. But I know our uses about 
modules may be not so complex like yours.

https://github.com/llvm/llvm-project/pull/76774
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