Comment by nvme0n1p1

Was loop vectorization by chance enabled in 0.15.2 and disabled since 0.16.0? One of my projects got 14% slower after upgrading to 0.16. I didn't dig in yet but I assumed the Io vtable was the cause (it does a lot of file io). But if the versions line up maybe it's actually loop vectorization.

Thanks for your work btw.