AMD appears to be fundamentally redesigning its CPU architecture for the upcoming Zen 6 chips, rather than making it a subset of Zen 5. As a part of those improvements, thanks to X user InstLatX64, we now know that AMD has finally adopted Intel's FRED instructions for its new silicon, along with fresh matrix multiplication and bit reversal instructions.
FRED is a wholesale replacement of the 80286-era Interrupt Descriptor Table (IDT) mechanism that's well over 40 years old by now. The IDT is currently the standard way to handle system events, like a network packet being delivered or mouse input, and passing its data to a driver or application.
