Function create_func_refs

cranelift/codegen/src/inline.rs:1514–1550

Translate `ir::FuncRef`s from the callee into the caller.

(
    allocs: &InliningAllocs,
    func: &mut ir::Function,
    callee: &ir::Function,
    entity_map: &EntityMap,
)

/// Translate `ir::FuncRef`s from the callee into the caller.
fn create_func_refs(
    allocs: &InliningAllocs,
    func: &mut ir::Function,
    callee: &ir::Function,
    entity_map: &EntityMap,
) -> u32 {
    let offset = func.dfg.ext_funcs.len();
    let offset = u32::try_from(offset).unwrap();

    func.dfg.ext_funcs.reserve(callee.dfg.ext_funcs.len());
    for ir::ExtFuncData {
        name,
        signature,
        colocated,
        patchable,
    } in callee.dfg.ext_funcs.values()
    {
        func.dfg.ext_funcs.push(ir::ExtFuncData {
            name: match name {
                ir::ExternalName::User(name_ref) => {
                    ir::ExternalName::User(allocs.user_external_name_refs[*name_ref].expect(
                        "should have translated all `ir::UserExternalNameRef`s before translating \
                         `ir::FuncRef`s",
                    ))
                }
                ir::ExternalName::TestCase(_)
                | ir::ExternalName::LibCall(_)
                | ir::ExternalName::KnownSymbol(_) => name.clone(),
            },
            signature: entity_map.inlined_sig_ref(*signature),
            colocated: *colocated,
            patchable: *patchable,
        });
    }

    offset
}

/// Copy stack slots from the callee into the caller.
fn create_stack_slots(func: &mut ir::Function, callee: &ir::Function) -> u32 {