[PATCH] D71959: [PassManagerBuilder] Remove global extension when a plugin is unloaded

[Serge Guelton via llvm-commits]

On Wed, Jan 29, 2020 at 08:35:53AM -0800, Mehdi AMINI wrote:
> Hans,
> 
> Elia asked for this to be cherry-picked in the release (is email your preferred
> way to get asked about it at this point?).
> 
> Thanks!

+1, especially as it would close https://bugs.llvm.org/show_bug.cgi?id=44568
which is marked as a blocker for the release.