0xd7b0, 0xd7c6,
	0xd7cb, 0xd7fb,
	0xf900, 0xfa6d,
	0xfa70, 0xfad9,
	0xfb00, 0xfb06,
	0xfb13, 0xfb17,
	0xfb1d, 0xfbc2,
	0xfbd3, 0xfd8f,
	0xfd92, 0xfdc7,
	0xfdcf, 0xfdcf,
	0xfdf0, 0xfe19,
	0xfe20, 0xfe6b,
	0xfe70, 0xfefc,
	0xff01, 0xffbe,
	0xffc2, 0xffc7,
	0xffca, 0xffcf,
	0xffd2, 0xffd7,
	0xffda, 0xffdc,
	0xffe0, 0xffee,
	0xfffc, 0xfffd,
}

var isNotPrint16 = []uint16{

(MOVWreg y:(ANDconst [c] _)) && uint64(c) <= 0xFFFF => y // 0xFFFF is largest immediate constant, when regarded as 32-bit is > 0
(MOVWreg y:(AND (MOVDconst [c]) _)) && uint64(c) <= 0x7FFFFFFF => y

// small and of zero-extend => either zero-extend or small and
(ANDconst [c] y:(MOVBZreg _)) && c&0xFF == 0xFF => y
(ANDconst [0xFF] (MOVBreg x)) => (MOVBZreg x)
(ANDconst [c] y:(MOVHZreg _))  && c&0xFFFF == 0xFFFF => y

		{0xabeb, 0xfd3e, 20819},
		{0xfd3f, 0xfe10, 209},
		{0xfe11, 0xfe19, 1},
		{0xfe30, 0xfe52, 1},
		{0xfe54, 0xfe61, 1},
		{0xfe63, 0xfe68, 5},
		{0xfe6a, 0xfe6b, 1},
		{0xff01, 0xff03, 1},
		{0xff05, 0xff0a, 1},
		{0xff0c, 0xff0f, 1},
		{0xff1a, 0xff1b, 1},
		{0xff1f, 0xff20, 1},
		{0xff3b, 0xff3d, 1},
		{0xff3f, 0xff5b, 28},
		{0xff5d, 0xff5f, 2},
		{0xff60, 0xff65, 1},
	},

	// match: (ANDconst [c] y:(MOVHZreg _))
	// cond: c&0xFFFF == 0xFFFF
	// result: y
	for {
		c := auxIntToInt64(v.AuxInt)
		y := v_0
		if y.Op != OpPPC64MOVHZreg || !(c&0xFFFF == 0xFFFF) {
			break
		}
		v.copyOf(y)
		return true
	}
	// match: (ANDconst [0xFFFF] (MOVHreg x))
	// result: (MOVHZreg x)
	for {
		if auxIntToInt64(v.AuxInt) != 0xFFFF || v_0.Op != OpPPC64MOVHreg {
			break
		}

	0xA909,
	0xAA50,
	0xAA59,
	0xFF10,
	0xFF19,
	0x104A1,
	0x1D7CE,
}

var testLetter = []rune{
	0x0041,
	0x0061,
	0x00AA,
	0x00BA,
	0x00C8,
	0x00DB,
	0x00F9,
	0x02EC,
	0x0535,
	0x06E6,
	0x093D,
	0x0A15,
	0x0B99,
	0x0DC0,
	0x0EDD,
	0x1000,
	0x1200,
	0x1312,
	0x1401,
	0x1885,
	0x2C00,
	0xA800,
	0xF900,
	0xFA30,
	0xFFDA,
	0xFFDC,
	0x10000,

	b := make([]byte, 2)
	go func() {
		for i := 0; i < N; i++ {
			b[0] = byte(i)
			b[1] = byte(i)
		}
		done <- true
	}()
	go func() {
		for i := 0; i < N; i++ {
			x, y := read2(b)
			if x&0xff00 != y&0xff00 {
				t.Errorf("x=%x y=%x\n", x, y)
				done <- false
				return
			}
		}
		done <- true
	}()
	<-done
	<-done
}

func TestDupLoad(t *testing.T) {
	main1(t)
	main2(t)

	default:
		panic("Could not determine native byte order.")
	}
}

// <arpa/inet.h>
func ntohs(n16 uint16) uint16 {
	if nativeByteOrder == binary.BigEndian {
		return n16
	}
	return (n16&0xff00)>>8 | (n16&0xff)<<8

	FMOVD	x+0(FP), F0
	//special case Atan(±0) = ±0
	FMOVD   $(0.0), F1
	FCMPU   F0, F1
	BEQ     atanIsZero

	MOVD	$·atanrodataL8<>+0(SB), R5
	MOVH	$0x3FE0, R3
	LGDR	F0, R1
	RISBGNZ	$32, $63, $32, R1, R1
	RLL	$16, R1, R2
	ANDW	$0x7FF0, R2
	MOVW	R2, R6
	MOVW	R3, R7
	CMPUBLE	R6, R7, L6
	MOVD	$·atanxmone<>+0(SB), R3
	FMOVD	0(R3), F2
	WFDDB	V0, V2, V0
	RISBGZ	$63, $63, $33, R1, R1

		mask     uint64
	}{
		// ((x<<4)&0xFF00)<<4
		{newPPC64ShiftAuxInt(4, 56, 63, 64), encodePPC64RotateMask(4, 0xFF00, 32), false, 0, 0},
		// ((x>>4)&0xFF)<<4
		{newPPC64ShiftAuxInt(4, 56, 63, 64), encodePPC64RotateMask(28, 0x0FFFFFFF, 32), true, 0, 0xFF0},
		// ((x>>4)&0xFFFF)<<4
		{newPPC64ShiftAuxInt(4, 48, 63, 64), encodePPC64RotateMask(28, 0xFFFF, 32), true, 0, 0xFFFF0},
		// ((x>>4)&0xFFFF)<<17

            if ( TOK_ID[ i ] != buf[ i ] ) {
                throw new IllegalArgumentException();
            }
        }
        // MECH_OID_LEN
        len = 0xff00 & ( buf[ i++ ] << 8 );
        len |= 0xff & buf[ i++ ];

        // MECH_OID
        if ( buf.length < i + len ) {
            throw new IllegalArgumentException();
        }
        byte[] bo = new byte[len];