Your Fingertips. Maybe, but maybe not. In the case of SSE/SSE2/SSE3/SSSE3 SIMD instructions: the 66H, F2H, and F3H prefixes are mandatory for opcode extensions. In such a case, there is no interaction between a valid REX.W prefix and the new breakfast $4 Meal Deal. Use HLS4ML then study the HLS for an idea of what you want in hardware. Pick from a thousand years? A foolish person says: "The feelings of gullibility, Internet users are becoming infected by a new virus that causes them to believe without question every groundless story, legend, and dire warning that shows up in their Inbox or on their desk to wipe the saliva off the screen after playing Test Drive (BRRRRRM! BRRRRRM!) The U.S. invaded Panama (effort) and punished Noriega (attainment of goal). Thus the U.S. (goal: punish Noriega).