return walkDelete(init, n)

	case ir.OAS2DOTTYPE:
		n := n.(*ir.AssignListStmt)
		return walkAssignDotType(n, init)

	case ir.OCONVIFACE:
		n := n.(*ir.ConvExpr)
		return walkConvInterface(n, init)

	case ir.OCONV, ir.OCONVNOP:
		n := n.(*ir.ConvExpr)
		return walkConv(n, init)

	case ir.OSLICE2ARR:
		n := n.(*ir.ConvExpr)
		return walkSliceToArray(n, init)