{Value: &Plain{int32(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
	{Value: &Plain{uint(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
	{Value: &Plain{uint8(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
	{Value: &Plain{uint16(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
	{Value: &Plain{uint32(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
	{Value: &Plain{float32(1.25)}, ExpectXML: `<Plain><V>1.25</V></Plain>`},

)

func (e ErrorCode) String() string {
	return string(e)
}

// Flags control the behavior of the parser and record information about regexp context.
type Flags uint16

const (
	FoldCase      Flags = 1 << iota // case-insensitive match
	Literal                         // treat pattern as literal string

	if p.Spadj == 0 && ins.as == AADDI && ins.imm >= -(1<<12) && ins.imm < 1<<12-1 {
		imm0 := ins.imm / 2
		imm1 := ins.imm - imm0

		// ADDI $(imm/2), REG, TO
		// ADDI $(imm-imm/2), TO, TO
		ins.imm = imm0
		insADDI := &instruction{as: AADDI, rd: ins.rd, rs1: ins.rd, imm: imm1}
		return []*instruction{ins, insADDI}
	}

	// LUI $high, TMP
	// ADDIW $low, TMP, TMP
	// <op> TMP, REG, TO

	ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		w.Write([]byte("Hello"))
	})).ts

	c := ts.Client()
	tr := c.Transport.(*Transport)
	tr.TLSClientConfig.CipherSuites = []uint16{tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256}
	tr.TLSClientConfig.MaxVersion = tls.VersionTLS12 // to get to pick the cipher suite
	tr.Dial = func(netw, addr string) (net.Conn, error) {

	c1 := &xcmp[a1]
	c3 := &xcmp[a3]
	for i := range ops {
		op := &ops[i]
		if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] && (op.family == 0 || c.ctxt.Arch.Family == op.family) {
			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
			return op
		}
	}

	c.ctxt.Diag("illegal combination %v %v %v %v", p.As, DRconv(a1), DRconv(a2), DRconv(a3))
	prasm(p)

	"rune":       {Size: 4, Align: 4, C: c("GoInt32")},
	"int8":       {Size: 1, Align: 1, C: c("GoInt8")},
	"uint8":      {Size: 1, Align: 1, C: c("GoUint8")},
	"int16":      {Size: 2, Align: 2, C: c("GoInt16")},
	"uint16":     {Size: 2, Align: 2, C: c("GoUint16")},
	"int32":      {Size: 4, Align: 4, C: c("GoInt32")},
	"uint32":     {Size: 4, Align: 4, C: c("GoUint32")},
	"int64":      {Size: 8, Align: 8, C: c("GoInt64")},

// Otherwise it returns 0.
func nextFreeFast(s *mspan) gclinkptr {
	theBit := sys.TrailingZeros64(s.allocCache) // Is there a free object in the allocCache?
	if theBit < 64 {
		result := s.freeindex + uint16(theBit)
		if result < s.nelems {
			freeidx := result + 1
			if freeidx%64 == 0 && freeidx != s.nelems {
				return 0
			}
			s.allocCache >>= uint(theBit + 1)
			s.freeindex = freeidx
			s.allocCount++

	c1 := &xcmp[a1]
	c4 := &xcmp[a4]
	for i := range ops {
		op := &ops[i]
		if (int(op.reg) == a2) && int(op.from3) == a3 && c1[op.from1] && c4[op.to1] && (int(op.to2) == a5) {
			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
			return op
		}
	}

	c.ctxt.Diag("illegal combination %v %v %v %v %v %v", p.As, DRconv(a1), DRconv(a2), DRconv(a3), DRconv(a4), DRconv(a5))
	prasm(p)

		fixShift(&p.To)
	}

	ops := oprange[p.As&obj.AMask]
	c1 := &xcmp[a1]
	c3 := &xcmp[a3]
	for i := range ops {
		op := &ops[i]
		if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] {
			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
			checkSuffix(c, p, op)
			return op
		}
	}