[clang] [llvm] [AVR] Add support for many new AVR MCUs (PR #143914)

[Tom Vijlbrief via llvm-commits]

tomtor wrote:

Removed EIJMP for avr128 devices, see: https://onlinedocs.microchip.com/oxy/GUID-0B644D8F-67E7-49E6-82C9-1B2B9ABE6A0D-en-US-23/GUID-3F578DEB-6EE6-4081-AEF2-B505FF2AE8A5.html

https://github.com/llvm/llvm-project/pull/143914