kill the CheckLoops DepNode

Author: nikomatsakis

src/librustc/dep_graph/dep_node.rs

@@ -60,7 +60,6 @@ pub enum DepNode<D: Clone + Debug> {
     CheckStaticRecursion,
     ResolveLifetimes,
     RegionResolveCrate,
-    CheckLoops,
     PluginRegistrar,
     StabilityIndex,
     CollectItem(D),
@@ -219,7 +218,6 @@ impl<D: Clone + Debug> DepNode<D> {
             CheckStaticRecursion => Some(CheckStaticRecursion),
             ResolveLifetimes => Some(ResolveLifetimes),
             RegionResolveCrate => Some(RegionResolveCrate),
-            CheckLoops => Some(CheckLoops),
             PluginRegistrar => Some(PluginRegistrar),
             StabilityIndex => Some(StabilityIndex),
             Coherence => Some(Coherence),

src/librustc_passes/loops.rs

@@ -11,7 +11,6 @@ use self::Context::*;
 
 use rustc::session::Session;
 
-use rustc::dep_graph::DepNode;
 use rustc::hir::map::Map;
 use rustc::hir::intravisit::{self, Visitor, NestedVisitorMap};
 use rustc::hir;
@@ -50,7 +49,6 @@ struct CheckLoopVisitor<'a, 'hir: 'a> {
 }
 
 pub fn check_crate(sess: &Session, map: &Map) {
-    let _task = map.dep_graph.in_task(DepNode::CheckLoops);
     let krate = map.krate();
     krate.visit_all_item_likes(&mut CheckLoopVisitor {
         sess: sess,