SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

	SYS_POLL                     = 209 // { int poll(struct pollfd *fds, u_int nfds, int timeout); }
	SYS_SEMGET                   = 221 // { int semget(key_t key, int nsems, int semflg); }
	SYS_SEMOP                    = 222 // { int semop(int semid, struct sembuf *sops, size_t nsops); }
	SYS_MSGGET                   = 225 // { int msgget(key_t key, int msgflg); }
	SYS_MSGSND                   = 226 // { int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg); }

		r := rhs[0]

		switch r.Op() {
		case ir.OINDEXMAP:
			stmt.SetOp(ir.OAS2MAPR)
		case ir.ORECV:
			stmt.SetOp(ir.OAS2RECV)
		case ir.ODOTTYPE:
			r := r.(*ir.TypeAssertExpr)
			stmt.SetOp(ir.OAS2DOTTYPE)
			r.SetOp(ir.ODOTTYPE2)
		case ir.ODYNAMICDOTTYPE:
			r := r.(*ir.DynamicTypeAssertExpr)
			stmt.SetOp(ir.OAS2DOTTYPE)
			r.SetOp(ir.ODYNAMICDOTTYPE2)
		default:
			break assignOK
		}

			n.SetType(nil)
			return n
		}
		n.SetType(t)
		n.SetOp(ir.OSLICESTR)
	} else if t.IsPtr() && t.Elem().IsArray() {
		tp = t.Elem()
		n.SetType(types.NewSlice(tp.Elem()))
		types.CalcSize(n.Type())
		if hasmax {
			n.SetOp(ir.OSLICE3ARR)
		} else {
			n.SetOp(ir.OSLICEARR)
		}
	} else if t.IsSlice() {
		n.SetType(t)
	} else {

func (n *miniNode) posOr(pos src.XPos) src.XPos {
	if pos.IsKnown() {
		return pos
	}
	return n.pos
}

// op can be read, but not written.
// An embedding implementation can provide a SetOp if desired.
// (The panicking SetOp is with the other panics below.)
func (n *miniNode) Op() Op            { return n.op }
func (n *miniNode) Pos() src.XPos     { return n.pos }
func (n *miniNode) SetPos(x src.XPos) { n.pos = x }