case 18: // jmp [r1],0(r2)
		r := int(p.Reg)
		if r == 0 {
			r = int(o.param)
		}
		o1 = OP_RRR(c.oprrr(p.As), uint32(0), uint32(p.To.Reg), uint32(r))
		if p.As == obj.ACALL {
			rel := obj.Addrel(c.cursym)
			rel.Off = int32(c.pc)
			rel.Siz = 0
			rel.Type = objabi.R_CALLIND
		}

	case 19: // mov $lcon,r
		// NOTE: this case does not use REGTMP. If it ever does,

(MOVLi2f <t> (Arg <u> [off] {sym})) && t.Size() == u.Size() => @b.Func.Entry (Arg <t> [off] {sym})

// LEAQ is rematerializeable, so this helps to avoid register spill.
// See issue 22947 for details
(ADD(Q|L)const [off] x:(SP)) => (LEA(Q|L) [off] x)

// HMULx is commutative, but its first argument must go in AX.