[LLVMdev] Buildbot try builds to get pre-commit performance number

[Tobias Grosser]

Hi,

as we got again more activity regarding performance testing and 
especially LNT, I wanted to get out an idea I had since a while, but 
where I neither had nor have the time or hardware to implement it.

The buildbot infrastructure provides so called 'try' builds, that allow 
a developer to submit patches they want to check for correctness or 
performance before actually committing them.

It would be nice to enable such a feature for our developers using our 
buildbot and LNT infrastructure. With the current -O3 builders, we 
should have enough hardware resources to draft a first version of this. 
So in case anybody is interested to try to set this up, that would be 
amazing and I am happy to discuss ideas here.

Also, with the LLVM Foundation being set up, my hope is that we get at 
some point a larger set of recent machines which will allow us to both 
increase the bandwidth for such a feature as well as the reliability of 
the performance results.

Cheers,
Tobias