1 //! This pass just dumps MIR at a specified point.
9 use rustc::session::config::{OutputFilenames, OutputType};
10 use rustc::ty::TyCtxt;
11 use crate::transform::{MirPass, MirSource};
12 use crate::util as mir_util;
14 pub struct Marker(pub &'static str);
16 impl MirPass for Marker {
17 fn name<'a>(&'a self) -> Cow<'a, str> {
21 fn run_pass<'a, 'tcx>(&self,
22 _tcx: TyCtxt<'a, 'tcx, 'tcx>,
23 _source: MirSource<'tcx>,
29 pub struct Disambiguator {
33 impl fmt::Display for Disambiguator {
34 fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
35 let title = if self.is_after { "after" } else { "before" };
36 write!(formatter, "{}", title)
41 pub fn on_mir_pass<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
42 pass_num: &dyn fmt::Display,
44 source: MirSource<'tcx>,
47 if mir_util::dump_enabled(tcx, pass_name, source) {
48 mir_util::dump_mir(tcx,
51 &Disambiguator { is_after },
58 pub fn emit_mir<'a, 'tcx>(
59 tcx: TyCtxt<'a, 'tcx, 'tcx>,
60 outputs: &OutputFilenames)
63 let path = outputs.path(OutputType::Mir);
64 let mut f = File::create(&path)?;
65 mir_util::write_mir_pretty(tcx, None, &mut f)?;