if buildcfg.GORISCV64 >= 22 {
		// Rotation instructions are supported natively.
		return []*instruction{ins}
	}

	switch ins.as {
	case AROL, AROLW, AROR, ARORW:
		// ROL -> OR (SLL x y) (SRL x (NEG y))
		// ROR -> OR (SRL x y) (SLL x (NEG y))
		sllOp, srlOp := ASLL, ASRL
		if ins.as == AROLW || ins.as == ARORW {
			sllOp, srlOp = ASLLW, ASRLW
		}
		shift1, shift2 := sllOp, srlOp