import "strconv"

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the stringer command to generate them again.
	var x [1]struct{}
	_ = x[TYPE_NONE-0]
	_ = x[TYPE_BRANCH-1]
	_ = x[TYPE_TEXTSIZE-2]
	_ = x[TYPE_MEM-3]
	_ = x[TYPE_CONST-4]
	_ = x[TYPE_FCONST-5]
	_ = x[TYPE_SCONST-6]
	_ = x[TYPE_REG-7]
	_ = x[TYPE_ADDR-8]
	_ = x[TYPE_SHIFT-9]
	_ = x[TYPE_REGREG-10]

// checkaddr checks that a has an expected encoding, especially TYPE_CONST vs TYPE_ADDR.
func checkaddr(ctxt *Link, p *Prog, a *Addr) {
	switch a.Type {
	case TYPE_NONE, TYPE_REGREG2, TYPE_REGLIST:
		return

	case TYPE_BRANCH, TYPE_TEXTSIZE:
		if a.Reg != 0 || a.Index != 0 || a.Scale != 0 || a.Name != 0 {
			break
		}
		return

	case TYPE_MEM:
		return

	case TYPE_CONST:

	loop := p
	p = pp.Append(p, riscv.AADD, obj.TYPE_CONST, 0, int64(types.PtrSize), obj.TYPE_REG, riscv.REG_T0, 0)
	p = pp.Append(p, riscv.ABNE, obj.TYPE_REG, riscv.REG_T0, 0, obj.TYPE_BRANCH, 0, 0)
	p.Reg = riscv.REG_T1
	p.To.SetTarget(loop)
	return p

		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)
		p.To.SetTarget(pl)
		cnt = cnt % 256
	}

	// Generate remaining clear instructions without a loop.
	for cnt > 0 {
		n := cnt

		// Can clear at most 256 bytes per instruction.
		if n > 256 {

	// behavior seems inconsistent. It should probably either
	// never check for arch or do it in all cases.

	oclassTestsCommon := []*oclassTest{
		{&obj.Addr{Type: obj.TYPE_NONE}, Ynone},
		{&obj.Addr{Type: obj.TYPE_BRANCH}, Ybr},
		{&obj.Addr{Type: obj.TYPE_TEXTSIZE}, Ytextsize},

		{&obj.Addr{Type: obj.TYPE_INDIR, Name: obj.NAME_EXTERN}, Yindir},
		{&obj.Addr{Type: obj.TYPE_INDIR, Name: obj.NAME_GOTREF}, Yindir},