// exportedToNamespace are services that were made visible to this namespace
	// by an exportTo explicitly specifying this namespace.
	exportedToNamespace map[string][]*Service

	// HostnameAndNamespace has all services, indexed by hostname then namespace.
	HostnameAndNamespace map[host.Name]map[string]*Service `json:"-"`

	// instancesByPort contains a map of service key and instances by port. It is stored here

  && a.Val() == 0
  && c.Val() == 0
  && setPos(v, x.Pos)
  && clobber(x)
  => (MOVOstoreconst [makeValAndOff(0,a.Off())] {s} p0 mem)

// Merge load and op
// TODO: add indexed variants?
((ADD|SUB|AND|OR|XOR)Q x l:(MOVQload [off] {sym} ptr mem)) && canMergeLoadClobber(v, l, x) && clobber(l) => ((ADD|SUB|AND|OR|XOR)Qload x [off] {sym} ptr mem)

//
// and dereferences the uses of _cgoIndexNN. Taking the address avoids
// making a copy of an array.
//
// This tells _cgoCheckPointer to check the complete contents of the
// slice or array being indexed, but no other part of the memory allocation.
func (p *Package) checkIndex(sb, sbCheck *bytes.Buffer, arg ast.Expr, i int) bool {
	// Strip type conversions.
	x := arg
	for {
		c, ok := x.(*ast.CallExpr)