Used as a staging ground for a hybrid scheduler capable of dealing with multiple different ISA's on the same host processor.
Multiple approaches might be possible, but this is TBD
As part of work in the CoreBoot project, the team at Dasharo were able to open up a bios for intel Alder Lake hybrid CPU's, which host both Golden cove Pcore's with AVX-512, as well as Gracemount E-cores which do not.
Under normal circumstances, you would only be able to use either ecores+pcores in AVX2 mode, or disable the ecores and use AVX512 on the Pcores.
https://twitter.com/FelixCLeClair/status/1516418881606279168?s=20&t=UgHzqJq6wuM7HRmwnHkMEA