This solution was often part of http://en.wikipedia.org/wiki/Very_long_instruction_word http://en.wikipedia.org/wiki/Very_long_instruction_word architectures.

This solution was often part of http://en.wikipedia.org/wiki/Very_long_instruction_word http://en.wikipedia.org/wiki/Very_long_instruction_word architectures. Itanium had the exact instructions you propose - look up ".dpxx" and ".spxx" for more.