1 //! This pass removes the unwind branch of all the terminators when the no-landing-pads option is
4 use crate::transform::{MirPass, MirSource};
5 use rustc::mir::visit::MutVisitor;
9 pub struct NoLandingPads<'tcx> {
13 impl<'tcx> NoLandingPads<'tcx> {
14 pub fn new(tcx: TyCtxt<'tcx>) -> Self {
19 impl<'tcx> MirPass<'tcx> for NoLandingPads<'tcx> {
20 fn run_pass(&self, tcx: TyCtxt<'tcx>, _: MirSource<'tcx>, body: &mut BodyAndCache<'tcx>) {
21 no_landing_pads(tcx, body)
25 pub fn no_landing_pads<'tcx>(tcx: TyCtxt<'tcx>, body: &mut BodyAndCache<'tcx>) {
26 if tcx.sess.no_landing_pads() {
27 NoLandingPads::new(tcx).visit_body(body);
31 impl<'tcx> MutVisitor<'tcx> for NoLandingPads<'tcx> {
32 fn tcx(&self) -> TyCtxt<'tcx> {
36 fn visit_terminator_kind(&mut self, kind: &mut TerminatorKind<'tcx>, location: Location) {
37 if let Some(unwind) = kind.unwind_mut() {
40 self.super_terminator_kind(kind, location);