AMD Optimizing C/C++ Compiler
developer.amd.com
developer.amd.com
I thought -march=native was supposed to handle things like this?
Here's a Phoronix thread about it. Most posts are… well, garbage, but there are some from an user named "bridgman" who apparently works at AMD: https://www.phoronix.com/forums/forum/phoronix/latest-phoron...
It's a bit hard to make out.