(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

	// 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
		}

	v[i] = (v[i] & 0xFF00) >> 6
	i++
	// ppc64x: "MOVW\tR0"
	v[i] = (v[i] & 0xFF) >> 8
	i++
	// ppc64x: "MOVW\tR0"
	v[i] = (v[i] & 0xF000000) >> 28
	i++
	// ppc64x: "RLWNM\t[$]26, R[0-9]+, [$]24, [$]31, R[0-9]+"
	v[i] = (v[i] >> 6) & 0xFF
	i++
	// ppc64x: "RLWNM\t[$]26, R[0-9]+, [$]12, [$]19, R[0-9]+"
	v[i] = (v[i] >> 6) & 0xFF000
	i++
	// ppc64x: "MOVW\tR0"

	}, "unsupported versions")
}

func TestNoSuiteOverlap(t *testing.T) {
	clientHello := &clientHelloMsg{
		vers:               VersionTLS10,
		random:             make([]byte, 32),
		cipherSuites:       []uint16{0xff00},
		compressionMethods: []uint8{compressionNone},
	}
	testClientHelloFailure(t, testConfig, clientHello, "no cipher suite supported by both client and server")
}

func TestNoCompressionOverlap(t *testing.T) {

	ETHTOOL_PHYS_ID                             = 0x1c
	ETHTOOL_PHY_EDPD_DFLT_TX_MSECS              = 0xffff
	ETHTOOL_PHY_EDPD_DISABLE                    = 0x0
	ETHTOOL_PHY_EDPD_NO_TX                      = 0xfffe
	ETHTOOL_PHY_FAST_LINK_DOWN_OFF              = 0xff
	ETHTOOL_PHY_FAST_LINK_DOWN_ON               = 0x0
	ETHTOOL_PHY_GTUNABLE                        = 0x4e

	// https://datatracker.ietf.org/doc/html/rfc1112#section-4
	if ip.Is4() {
		return ip.v4(0)&0xf0 == 0xe0
	}
	// IP Version 6 Addressing Architecture (2.4 Address Type Identification)
	// https://datatracker.ietf.org/doc/html/rfc4291#section-2.4
	if ip.Is6() {
		return ip.addr.hi>>(64-8) == 0xff // ip.v6(0) == 0xff
	}
	return false // zero value
}

func DecodePPC64RotateMask(sauxint int64) (rotate, mb, me int64, mask uint64) {
	auxint := uint64(sauxint)
	rotate = int64((auxint >> 16) & 0xFF)
	mb = int64((auxint >> 8) & 0xFF)
	me = int64((auxint >> 0) & 0xFF)
	nbits := int64((auxint >> 24) & 0xFF)
	mask = ((1 << uint(nbits-mb)) - 1) ^ ((1 << uint(nbits-me)) - 1)
	if mb > me {
		mask = ^mask
	}
	if nbits == 32 {
		mask = uint64(uint32(mask))