Created by: semihalf-kardach-stanislaw
Add files describing RISC-V instruction encodings for the base spec and each currently ratified extension. Those files are used as a data source by the codec.py generator script.
Currently the prefetch.[irw] instructions (part of Zicbop extension) are commented out as they cause a bug in the trie generation algorithm (due to aliasing encoding of prefetch.[irw] and ori).
Issue #3544
Signed-off-by: Stanislaw Kardach [email protected]