Test issuer: https://git.libre-soc.org/?p=openpower-isa.git;a=commit;h=51aed07f97bf80e4ec0f556ea43973ca597a172b shift_rot cases: https://git.libre-soc.org/?p=openpower-isa.git;a=commit;h=a33775a791d51b7ef3ae7e6216b9bfdfb62e7c7a Went from 35 seconds to less than 2.