// valueNode returns the id of the value node for v, creating it (and
// the association) as needed. It may return zero for uninteresting
// values containing no pointers.
//
func (a *analysis) valueNode(v ssa.Value) nodeid {
// Value nodes for locals are created en masse by genFunc.
if id, ok := a.localval[v]; ok {
return id
}
// Value nodes for globals are created on demand.
id, ok := a.globalval[v]
if !ok {
var comment string
if a.log != nil {
comment = v.String()
}
id = a.addNodes(v.Type(), comment)
if obj := a.objectNode(nil, v); obj != 0 {
a.addressOf(v.Type(), id, obj)
}
a.setValueNode(v, id, nil)
}
return id
}