This extension adds 3 instructions that perform load-store address calculation. The current spec can be found at: https://github.com/quic/riscv-unified-db/releases/latest This patch adds assembler only support. --------- Co-authored-by: Harsh Chandel <hchandel@qti.qualcomm.com> Co-authored-by: Sudharsan Veeravalli <quic_svs@quicinc.com>