Complex sentence: A new set of permute instructions have been added for full two input permutations, they all take three arguments, two source registers and one index, the result is output by either overwriting the first source register or the index register.
Split into simpler sentences: A new set of permute instructions have been added for full two input permutations. They all take three arguments, two source registers and one index; the result is output by either overwriting the first source register or the index register.