diff options
| -rw-r--r-- | src/librustc_mir/transform/simplify_cfg.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/librustc_mir/transform/simplify_cfg.rs b/src/librustc_mir/transform/simplify_cfg.rs index 8e1b7b44976..228fa468841 100644 --- a/src/librustc_mir/transform/simplify_cfg.rs +++ b/src/librustc_mir/transform/simplify_cfg.rs @@ -50,6 +50,7 @@ impl<'a> SimplifyCfg<'a> { impl<'l, 'tcx> MirPass<'tcx> for SimplifyCfg<'l> { fn run_pass<'a>(&mut self, _tcx: TyCtxt<'a, 'tcx, 'tcx>, _src: MirSource, mir: &mut Mir<'tcx>) { + debug!("SimplifyCfg({:?}) - simplifying {:?}", self.label, mir); CfgSimplifier::new(mir).simplify(); remove_dead_blocks(mir); @@ -78,6 +79,8 @@ impl<'a, 'tcx: 'a> CfgSimplifier<'a, 'tcx> { // we can't use mir.predecessors() here because that counts // dead blocks, which we don't want to. + pred_count[START_BLOCK] = 1; + for (_, data) in traversal::preorder(mir) { if let Some(ref term) = data.terminator { for &tgt in term.successors().iter() { |