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: compiler.rs
    path of file: ./repos/wasmer/lib/compiler-singlepass/src
    
    the code of the file until where you have to start completion: //! Support for compiling with Singlepass.
// Allow unused imports while developing.
#![allow(unused_imports, dead_code)]

use crate::codegen::FuncGen;
use crate::config::Singlepass;
#[cfg(feature = "unwind")]
use crate::dwarf::WriterRelocate;
use crate::machine::Machine;
use crate::machine::{
    gen_import_call_trampoline, gen_std_dynamic_import_trampoline, gen_std_trampoline,
};
use crate::machine_arm64::MachineARM64;
use crate::machine_x64::MachineX86_64;
#[cfg(feature = "unwind")]
use crate::unwind::{create_systemv_cie, UnwindFrame};
use enumset::EnumSet;
#[cfg(feature = "unwind")]
use g
    
    fn errors_for_unsupported_targets() {
        let compiler = SinglepassCompiler::new(Singlepass::default());

        // Compile for 32bit Linux
        let linux32 = Target::new(triple!("i686-unknown-linux-gnu"), CpuFeature::for_host());
        let (mut info, translation, inputs) = dummy_compilation_ingredients();
        let result = compiler.compile_module(&linux32, &mut info, &translation, inputs);
        match result.unwrap_err() {
            CompileError::UnsupportedTarget(name) => assert_eq!(name, "i686"),
            error => panic!("Unexpected error: {:?}", error),
        };

        // Compile for win32
        let win32 = Target::new(triple!("i686-pc-windows-gnu"), CpuFeature::for_host());
        let (mut info, translation, inputs) = dummy_compilation_ingredients();
        let result = compiler.compile_module(&win32, &mut info, &translation, inputs);
        match result.unwrap_err() {
            CompileError::UnsupportedTarget(name) => assert_eq!(name, "i686"), // Windows should be checked before architecture
            error => panic!("Unexpected error: {:?}", error),
        };
    }