crc32.b    rd rs1 31..20=0x610 14..12=1 6..2=0x04 1..0=3
crc32.h    rd rs1 31..20=0x611 14..12=1 6..2=0x04 1..0=3
crc32.w    rd rs1 31..20=0x612 14..12=1 6..2=0x04 1..0=3
crc32c.b   rd rs1 31..20=0x618 14..12=1 6..2=0x04 1..0=3
crc32c.h   rd rs1 31..20=0x619 14..12=1 6..2=0x04 1..0=3
crc32c.w   rd rs1 31..20=0x61A 14..12=1 6..2=0x04 1..0=3