This patch add the instructions of zcmt extension.
spac is here
Which includes two instructions (cm.jt&cm.jalt) and a CSR Reg JVT
co-author: @Scott Egerton
VincentWu on Sep 14 2022, 7:39 AM.Authored by
Please add to the review description a link to the appropriate specification. Please update docs/RISCVUsage.rst to add Zcmt, and link to the specification. It's impossible to review e.g. encoding without knowing what you're implementing.