Overlap instructions generation for risc-isa-sim #1184
Description
Is your feature request related to a problem? Please describe.
RISC-V instructions from different extensions can have identical encodings. Manually tracking these overlaps for simulators is error-prone and doesn't scale.
Describe the solution you'd like
An automated generator that detects overlapping instruction encodings and produces DECLARE_OVERLAP_INSN declarations for simulators like Spike.
Describe alternatives you've considered
Manual maintenance or runtime detection, but both have significant drawbacks.