From 6701d9020f0deb0e8d673fe5ad1247514b3e9db3 Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Tue, 6 Mar 2018 00:58:01 +0000
Subject: [PATCH] Remove IdxSet::reset_to_empty

---
 src/librustc_data_structures/indexed_set.rs | 5 -----
 src/librustc_mir/dataflow/at_location.rs    | 8 ++++----
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/src/librustc_data_structures/indexed_set.rs b/src/librustc_data_structures/indexed_set.rs
index 223e08de826c..7c926cc784b4 100644
--- a/src/librustc_data_structures/indexed_set.rs
+++ b/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 }
     }
diff --git a/src/librustc_mir/dataflow/at_location.rs b/src/librustc_mir/dataflow/at_location.rs
index b1f73bfbe228..30248ccf931c 100644
--- a/src/librustc_mir/dataflow/at_location.rs
+++ b/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,