Remove IdxSet::reset_to_empty

Author: varkor

src/librustc_data_structures/indexed_set.rs

@@ -231,11 +231,6 @@ impl<T: Idx> IdxSet<T> {
         each_bit(self, max_bits, f)
     }
 
-    /// Removes all elements from this set.
-    pub fn reset_to_empty(&mut self) {
-        for word in self.words_mut() { *word = 0; }
-    }
-
     pub fn elems(&self, universe_size: usize) -> Elems<T> {
         Elems { i: 0, set: self, universe_size: universe_size }
     }

src/librustc_mir/dataflow/at_location.rs

@@ -147,8 +147,8 @@ impl<BD> FlowsAtLocation for FlowAtLocation<BD>
     }
 
     fn reconstruct_statement_effect(&mut self, loc: Location) {
-        self.stmt_gen.reset_to_empty();
-        self.stmt_kill.reset_to_empty();
+        self.stmt_gen.clear();
+        self.stmt_kill.clear();
         {
             let mut sets = BlockSets {
                 on_entry: &mut self.curr_state,
@@ -172,8 +172,8 @@ impl<BD> FlowsAtLocation for FlowAtLocation<BD>
     }
 
     fn reconstruct_terminator_effect(&mut self, loc: Location) {
-        self.stmt_gen.reset_to_empty();
-        self.stmt_kill.reset_to_empty();
+        self.stmt_gen.clear();
+        self.stmt_kill.clear();
         {
             let mut sets = BlockSets {
                 on_entry: &mut self.curr_state,