The new pass manager uses LoopInterleaving to control interleaving in LoopVectorize after: https://reviews.llvm.org/D59723.
The legacy pass manager uses DisableUnrollLoops.
This is a proposal to have the legacy pass manager add a corresponding LoopsInterleaved field:
https://reviews.llvm.org/D61030
Clang change:
https://reviews.llvm.org/D61142
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!
Thank you,
Alina