if cnt > clearLoopCutoff {
		ireg := int16(s390x.REGRT2) // register holds number of remaining loop iterations
		p = pp.Append(p, s390x.AMOVD, obj.TYPE_CONST, 0, cnt/256, obj.TYPE_REG, ireg, 0)
		p = pp.Append(p, s390x.ACLEAR, obj.TYPE_CONST, 0, 256, obj.TYPE_MEM, reg, off)
		pl := p
		p = pp.Append(p, s390x.AADD, obj.TYPE_CONST, 0, 256, obj.TYPE_REG, reg, 0)
		p = pp.Append(p, s390x.ABRCTG, obj.TYPE_REG, ireg, 0, obj.TYPE_BRANCH, 0, 0)

	}

	// mandatory
	S390X.HasZARCH = has(hwcap_ZARCH)

	// optional
	S390X.HasSTFLE = has(hwcap_STFLE)
	S390X.HasLDISP = has(hwcap_LDISP)
	S390X.HasEIMM = has(hwcap_EIMM)
	S390X.HasETF3EH = has(hwcap_ETF3EH)
	S390X.HasDFP = has(hwcap_DFP)
	S390X.HasMSA = has(hwcap_MSA)
	S390X.HasVX = has(hwcap_VX)
	if S390X.HasVX {
		S390X.HasVXE = has(hwcap_VXE)
	}

	facilities := stfle()

	// mandatory
	S390X.HasZARCH = facilities.Has(zarch)
	S390X.HasSTFLE = facilities.Has(stflef)
	S390X.HasLDISP = facilities.Has(ldisp)
	S390X.HasEIMM = facilities.Has(eimm)

	// optional
	S390X.HasETF3EH = facilities.Has(etf3eh)
	S390X.HasDFP = facilities.Has(dfp)
	S390X.HasMSA = facilities.Has(msa)
	S390X.HasVX = facilities.Has(vx)
	if S390X.HasVX {
		S390X.HasVXE = facilities.Has(vxe)
	}

		{Name: "aesctr", Feature: &S390X.HasAESCTR},
		{Name: "aesgcm", Feature: &S390X.HasAESGCM},
		{Name: "ghash", Feature: &S390X.HasGHASH},
		{Name: "sha1", Feature: &S390X.HasSHA1},
		{Name: "sha256", Feature: &S390X.HasSHA256},
		{Name: "sha3", Feature: &S390X.HasSHA3},
		{Name: "sha512", Feature: &S390X.HasSHA512},
		{Name: "vx", Feature: &S390X.HasVX},
		{Name: "vxe", Feature: &S390X.HasVXE},
	}
}

	// s390x:"CGIJ\t[$]12, R[0-9]+, [$]127, "
	for i := doNotOptimize; i < 128; i++ {
		dummy()
	}

	// s390x:"CGIJ\t[$]10, R[0-9]+, [$]-128, "
	for i := doNotOptimize; i > -129; i-- {
		dummy()
	}

	// s390x:"CGIJ\t[$]2, R[0-9]+, [$]127, "
	for i := doNotOptimize; i >= 128; i++ {
		dummy()
	}

	// s390x:"CGIJ\t[$]4, R[0-9]+, [$]-128, "

	options = []option{
		{Name: "zarch", Feature: &S390X.HasZARCH},
		{Name: "stfle", Feature: &S390X.HasSTFLE},
		{Name: "ldisp", Feature: &S390X.HasLDISP},
		{Name: "msa", Feature: &S390X.HasMSA},
		{Name: "eimm", Feature: &S390X.HasEIMM},
		{Name: "dfp", Feature: &S390X.HasDFP},
		{Name: "etf3eh", Feature: &S390X.HasETF3EH},
		{Name: "vx", Feature: &S390X.HasVX},
		{Name: "vxe", Feature: &S390X.HasVXE},

				{endpointsVersion: []mockEndpointVersion{
					{Version: "3.4.30", Endpoint: "localhost:2390"}},
					expectedResult: false}},
		},
		{
			testName: "Disabled - supported versions bound, 3.5.0",
			rounds: []testCase{
				{endpointsVersion: []mockEndpointVersion{
					{Version: "3.5.0", Endpoint: "localhost:2390"}},
					expectedResult: false}},
		},
		{

func si1c(c <-chan int64) {
	// amd64:"CMPQ\t.+, [$]256"
	// s390x:"CLGIJ\t[$]12, R[0-9]+, [$]255"
	for x := <-c; x >= 0 && x < 256; x = <-c {
	}
}

func si2c(c <-chan int32) {
	// amd64:"CMPL\t.+, [$]256"
	// s390x:"CLIJ\t[$]12, R[0-9]+, [$]255"
	for x := <-c; x >= 0 && x < 256; x = <-c {
	}
}

func si3c(c <-chan int16) {
	// amd64:"CMPW\t.+, [$]256"
	// s390x:"CLIJ\t[$]12, R[0-9]+, [$]255"

		// result: (BRC {c&^s390x.Unordered} x yes no)
		for b.Controls[0].Op == OpS390XCMPU {
			x := b.Controls[0]
			c := auxToS390xCCMask(b.Aux)
			if !(c&s390x.Unordered != 0) {
				break
			}
			b.resetWithControl(BlockS390XBRC, x)
			b.Aux = s390xCCMaskToAux(c &^ s390x.Unordered)
			return true
		}
		// match: (BRC {c} x:(CMPWU _ _) yes no)
		// cond: c&s390x.Unordered != 0

		switch t.Size() {
		case 4:
			return s390x.AFMOVS
		case 8:
			return s390x.AFMOVD
		}
	} else {
		switch t.Size() {
		case 1:
			if t.IsSigned() {
				return s390x.AMOVB
			} else {
				return s390x.AMOVBZ
			}
		case 2:
			if t.IsSigned() {
				return s390x.AMOVH
			} else {
				return s390x.AMOVHZ
			}
		case 4:
			if t.IsSigned() {
				return s390x.AMOVW
			} else {
				return s390x.AMOVWZ