1 2 3 4
clmul rd rs1 rs2 31..25=5 14..12=1 6..2=0x0C 1..0=3 clmulr rd rs1 rs2 31..25=5 14..12=2 6..2=0x0C 1..0=3 clmulh rd rs1 rs2 31..25=5 14..12=3 6..2=0x0C 1..0=3