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| author | kennytm <kennytm@gmail.com> | 2018-06-08 07:05:44 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-06-08 07:05:44 +0800 |
| commit | 326331c34f70617c3e779c6bf8227d0dcd75bad5 (patch) | |
| tree | 70eef9380cdce82cbf943fb5bcc387aaf3d857fe | |
| parent | d5759daf643272fed402cfe27a7ebdf487c323bd (diff) | |
| parent | f1c92476634485c6a2fb17d33046cedddaa150a2 (diff) | |
| download | rust-326331c34f70617c3e779c6bf8227d0dcd75bad5.tar.gz rust-326331c34f70617c3e779c6bf8227d0dcd75bad5.zip | |
Rollup merge of #51399 - ngg:nll-performance, r=nikomatsakis
NLL performance boost This makes compilation of the [inflate](https://github.com/rust-lang-nursery/rustc-perf/tree/master/collector/benchmarks/inflate) benchmark compile 2 times faster on my computer when NLL is enabled. This does not fix the #51377 perfectly, it's still 4-5 times slower than without NLL, but it's a start.
| -rw-r--r-- | src/librustc_mir/borrow_check/nll/type_check/liveness.rs | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/librustc_mir/borrow_check/nll/type_check/liveness.rs b/src/librustc_mir/borrow_check/nll/type_check/liveness.rs index d19fd2bb596..76320c6a2ea 100644 --- a/src/librustc_mir/borrow_check/nll/type_check/liveness.rs +++ b/src/librustc_mir/borrow_check/nll/type_check/liveness.rs @@ -104,13 +104,15 @@ impl<'gen, 'typeck, 'flow, 'gcx, 'tcx> TypeLivenessGenerator<'gen, 'typeck, 'flo location, live_local ); - self.flow_inits.each_state_bit(|mpi_init| { - debug!( - "add_liveness_constraints: location={:?} initialized={:?}", - location, - &self.flow_inits.operator().move_data().move_paths[mpi_init] - ); - }); + if log_enabled!(::log::Level::Debug) { + self.flow_inits.each_state_bit(|mpi_init| { + debug!( + "add_liveness_constraints: location={:?} initialized={:?}", + location, + &self.flow_inits.operator().move_data().move_paths[mpi_init] + ); + }); + } let mpi = self.move_data.rev_lookup.find_local(live_local); if let Some(initialized_child) = self.flow_inits.has_any_child_of(mpi) { |