[llvm] [IA] Add support for [de]interleave{3,5,7} (PR #139373)

[Min-Yih Hsu via llvm-commits]

mshockwave wrote:

> The only exception to this I can think of is X86 which doesn't have the IA pass (IIUC)

I think they're in lib/Target/X86/X86InterleavedAccess.cpp

https://github.com/llvm/llvm-project/pull/139373