Function define_simple_function

cranelift/object/tests/basic.rs:34–58

(module: &mut ObjectModule)

}

fn define_simple_function(module: &mut ObjectModule) -> FuncId {
    let sig = Signature {
        params: vec![],
        returns: vec![],
        call_conv: CallConv::SystemV,
    };

    let func_id = module
        .declare_function("abc", Linkage::Local, &sig)
        .unwrap();

    let mut ctx = Context::new();
    ctx.func = Function::with_name_signature(UserFuncName::user(0, func_id.as_u32()), sig);
    let mut func_ctx = FunctionBuilderContext::new();
    {
        let mut bcx: FunctionBuilder = FunctionBuilder::new(&mut ctx.func, &mut func_ctx);
        let block = bcx.create_block();
        bcx.switch_to_block(block);
        bcx.ins().return_(&[]);
    }

    module.define_function(func_id, &mut ctx).unwrap();

    func_id
}

#[test]
#[should_panic(expected = "Result::unwrap()` on an `Err` value: DuplicateDefinition(\"abc\")")]