Rollup merge of rust-lang#30023 - Ms2ger:EntryOrExit, r=Manishearth

Author: steveklabnik

src/librustc/middle/dataflow.rs

@@ -14,8 +14,6 @@
 //! and thus uses bitvectors. Your job is simply to specify the so-called
 //! GEN and KILL bits for each expression.
 
-pub use self::EntryOrExit::*;
-
 use middle::cfg;
 use middle::cfg::CFGIndex;
 use middle::ty;
@@ -340,7 +338,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
         }
         let indices = get_cfg_indices(id, &self.nodeid_to_index);
         for &cfgidx in indices {
-            if !self.each_bit_for_node(Entry, cfgidx, |i| f(i)) {
+            if !self.each_bit_for_node(EntryOrExit::Entry, cfgidx, |i| f(i)) {
                 return false;
             }
         }
@@ -363,8 +361,8 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
         let on_entry = &self.on_entry[start.. end];
         let temp_bits;
         let slice = match e {
-            Entry => on_entry,
-            Exit => {
+            EntryOrExit::Entry => on_entry,
+            EntryOrExit::Exit => {
                 let mut t = on_entry.to_vec();
                 self.apply_gen_kill(cfgidx, &mut t);
                 temp_bits = t;

src/librustc_borrowck/graphviz.rs

@@ -22,7 +22,6 @@ use borrowck::{BorrowckCtxt, LoanPath};
 use dot;
 use rustc::middle::cfg::CFGIndex;
 use rustc::middle::dataflow::{DataFlowOperator, DataFlowContext, EntryOrExit};
-use rustc::middle::dataflow;
 use std::rc::Rc;
 use std::borrow::IntoCow;
 
@@ -134,8 +133,8 @@ impl<'a, 'tcx> dot::Labeller<'a, Node<'a>, Edge<'a>> for DataflowLabeller<'a, 't
     fn graph_id(&'a self) -> dot::Id<'a> { self.inner.graph_id() }
     fn node_id(&'a self, n: &Node<'a>) -> dot::Id<'a> { self.inner.node_id(n) }
     fn node_label(&'a self, n: &Node<'a>) -> dot::LabelText<'a> {
-        let prefix = self.dataflow_for(dataflow::Entry, n);
-        let suffix = self.dataflow_for(dataflow::Exit, n);
+        let prefix = self.dataflow_for(EntryOrExit::Entry, n);
+        let suffix = self.dataflow_for(EntryOrExit::Exit, n);
         let inner_label = self.inner.node_label(n);
         inner_label
             .prefix_line(dot::LabelText::LabelStr(prefix.into_cow()))