(Div16 <t> n (Const16 [c])) && isPowerOfTwo16(c) =>
  (Rsh16x64
    (Add16 <t> n (Rsh16Ux64 <t> (Rsh16x64 <t> n (Const64 <typ.UInt64> [15])) (Const64 <typ.UInt64> [int64(16-log16(c))])))
    (Const64 <typ.UInt64> [int64(log16(c))]))
(Div32 <t> n (Const32 [c])) && isPowerOfTwo32(c) =>
  (Rsh32x64
    (Add32 <t> n (Rsh32Ux64 <t> (Rsh32x64 <t> n (Const64 <typ.UInt64> [31])) (Const64 <typ.UInt64> [int64(32-log32(c))])))

			o1 = c.opxrrr(p, p.As, rt, r, obj.REG_NONE, true)
			o1 |= c.encRegShiftOrExt(p, &p.From, p.From.Reg) /* includes reg, op, etc */
		} else {
			o1 = c.opxrrr(p, p.As, rt, r, rf, false)
		}

	case 28: /* logop $vcon, [R], R (64 bit literal) */
		if p.Reg == REGTMP {
			c.ctxt.Diag("cannot use REGTMP as source: %v\n", p)
		}
		o := uint32(0)
		num := uint8(0)
		cls := int(p.From.Class)
		if isANDWop(p.As) {