> "rotate and mask" series of instructions Sounds a lot like the PowerPC's rlwinm instruction. The PowerPC 600 series, part 5: Rotates and shifts https://dev

> "rotate and mask" series of instructions Sounds a lot like the PowerPC's rlwinm instruction. The PowerPC 600 series, part 5: Rotates and shifts https://devblogs.microsoft.com/oldnewthing/20180810-00/?p=99465 https://devblogs.microsoft.com/oldnewthing/20180810-00/?p=99...