func walkAssignFunc(init *ir.Nodes, n *ir.AssignListStmt) ir.Node {
	init.Append(ir.TakeInit(n)...)

	r := n.Rhs[0]
	walkExprListSafe(n.Lhs, init)
	r = walkExpr(r, init)

	if ir.IsIntrinsicCall(r.(*ir.CallExpr)) {
		n.Rhs = []ir.Node{r}
		return n
	}
	init.Append(r)

	ll := ascompatet(n.Lhs, r.Type())
	return ir.NewBlockStmt(src.NoXPos, ll)
}

// walkAssignList walks an OAS2 node.

	case ir.OBLOCK:
		n := n.(*ir.BlockStmt)
		s.stmtList(n.List)

	case ir.OFALL: // no-op

	// Expression statements
	case ir.OCALLFUNC:
		n := n.(*ir.CallExpr)
		if ir.IsIntrinsicCall(n) {
			s.intrinsicCall(n)
			return
		}
		fallthrough

	case ir.OCALLINTER:
		n := n.(*ir.CallExpr)
		s.callResult(n, callNormal)