[PATCH] D33615: Move summary dead stripping before regular LTO and record results in the combined summary

[Mehdi AMINI via Phabricator via llvm-commits]

mehdi_amini added a comment.

In https://reviews.llvm.org/D33615#766506, @pcc wrote:

> In https://reviews.llvm.org/D33615#766505, @mehdi_amini wrote:
>
> > > Add a bit to GVFlags to tell ThinLTO backends which values are dead.
> >
> > Why?
>
>
> See Evgeniy's RFC thread, in particular 
>  http://lists.llvm.org/pipermail/llvm-dev/2017-May/113298.html


I see in this thread why you want to run the dead-stripping before regular LTO, but I don't immediately understand why you're adding these to the combined index and the serialization of it?


Repository:
  rL LLVM

https://reviews.llvm.org/D33615