1 //! This pass just dumps MIR at a specified point.
9 use rustc_middle::mir::Body;
10 use rustc_middle::mir::{dump_enabled, dump_mir, write_mir_pretty};
11 use rustc_middle::ty::TyCtxt;
12 use rustc_session::config::{OutputFilenames, OutputType};
14 pub struct Marker(pub &'static str);
16 impl<'tcx> MirPass<'tcx> for Marker {
17 fn name(&self) -> Cow<'_, str> {
21 fn run_pass(&self, _tcx: TyCtxt<'tcx>, _body: &mut Body<'tcx>) {}
24 pub struct Disambiguator {
28 impl fmt::Display for Disambiguator {
29 fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
30 let title = if self.is_after { "after" } else { "before" };
31 write!(formatter, "{}", title)
35 pub fn on_mir_pass<'tcx>(
37 pass_num: &dyn fmt::Display,
42 if dump_enabled(tcx, pass_name, body.source.def_id()) {
43 dump_mir(tcx, Some(pass_num), pass_name, &Disambiguator { is_after }, body, |_, _| Ok(()));
47 pub fn emit_mir(tcx: TyCtxt<'_>, outputs: &OutputFilenames) -> io::Result<()> {
48 let path = outputs.path(OutputType::Mir);
49 let mut f = io::BufWriter::new(File::create(&path)?);
50 write_mir_pretty(tcx, None, &mut f)?;