You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/wasmtime/cranelift/module/src
    
    the code of the file until where you have to start completion: //! Top-level lib.rs for `cranelift_module`.

#![deny(missing_docs)]
#![no_std]

#[cfg(not(feature = "std"))]
#[macro_use]
extern crate alloc as std;
#[cfg(feature = "std")]
#[macro_use]
extern crate std;

#[cfg(not(feature = "std"))]
use hashbrown::{hash_map, HashMap};
use std::borrow::ToOwned;
use std::boxed::Box;
#[cfg(feature = "std")]
use std::collections::{hash_map, HashMap};
use std::string::String;

use cranelift_codegen::ir;

mod data_context;
mod modu
    
pub fn default_libcall_names() -> Box<dyn Fn(ir::LibCall) -> String + Send + Sync> {
    Box::new(move |libcall| match libcall {
        ir::LibCall::Probestack => "__cranelift_probestack".to_owned(),
        ir::LibCall::CeilF32 => "ceilf".to_owned(),
        ir::LibCall::CeilF64 => "ceil".to_owned(),
        ir::LibCall::FloorF32 => "floorf".to_owned(),
        ir::LibCall::FloorF64 => "floor".to_owned(),
        ir::LibCall::TruncF32 => "truncf".to_owned(),
        ir::LibCall::TruncF64 => "trunc".to_owned(),
        ir::LibCall::NearestF32 => "nearbyintf".to_owned(),
        ir::LibCall::NearestF64 => "nearbyint".to_owned(),
        ir::LibCall::FmaF32 => "fmaf".to_owned(),
        ir::LibCall::FmaF64 => "fma".to_owned(),
        ir::LibCall::Memcpy => "memcpy".to_owned(),
        ir::LibCall::Memset => "memset".to_owned(),
        ir::LibCall::Memmove => "memmove".to_owned(),
        ir::LibCall::Memcmp => "memcmp".to_owned(),

        ir::LibCall::ElfTlsGetAddr => "__tls_get_addr".to_owned(),
        ir::LibCall::ElfTlsGetOffset => "__tls_get_offset".to_owned(),
        ir::LibCall::X86Pshufb => "__cranelift_x86_pshufb".to_owned(),
    })
}