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