1 //! Drivers are responsible for calling [`codegen_fn`] or [`codegen_static`] for each mono item and
2 //! performing any further actions like JIT executing or writing object files.
4 //! [`codegen_fn`]: crate::base::codegen_fn
5 //! [`codegen_static`]: crate::constant::codegen_static
7 use rustc_middle::mir::mono::{Linkage as RLinkage, MonoItem, Visibility};
12 #[cfg(feature = "jit")]
15 fn predefine_mono_items<'tcx>(
17 module: &mut dyn Module,
18 mono_items: &[(MonoItem<'tcx>, (RLinkage, Visibility))],
20 tcx.sess.time("predefine functions", || {
21 let is_compiler_builtins = tcx.is_compiler_builtins(LOCAL_CRATE);
22 for &(mono_item, (linkage, visibility)) in mono_items {
24 MonoItem::Fn(instance) => {
25 let name = tcx.symbol_name(instance).name;
26 let _inst_guard = crate::PrintOnPanic(|| format!("{:?} {}", instance, name));
27 let sig = get_function_sig(tcx, module.isa().triple(), instance);
28 let linkage = crate::linkage::get_clif_linkage(
34 module.declare_function(name, linkage, &sig).unwrap();
36 MonoItem::Static(_) | MonoItem::GlobalAsm(_) => {}
42 fn time<R>(tcx: TyCtxt<'_>, display: bool, name: &'static str, f: impl FnOnce() -> R) -> R {
44 println!("[{:<30}: {}] start", tcx.crate_name(LOCAL_CRATE), name);
45 let before = std::time::Instant::now();
46 let res = tcx.sess.time(name, f);
47 let after = std::time::Instant::now();
48 println!("[{:<30}: {}] end time: {:?}", tcx.crate_name(LOCAL_CRATE), name, after - before);
51 tcx.sess.time(name, f)