The new pass manager uses
LoopInterleaving to control interleaving in LoopVectorize after: https://reviews.llvm.org/D59723.
The legacy pass manager uses
This is a proposal to have the legacy pass manager add a corresponding
The intention is for the above two changes to not be a visible change for clang.
A separate clang flag that controls
LoopsInterleaved can be introduced in follow-up patches.
Comments very welcome!