Remove uses of HybridBitSet.

Author: cjgillot

compiler/rustc_borrowck/src/type_check/liveness/trace.rs

@@ -1,5 +1,5 @@
 use rustc_data_structures::fx::{FxIndexMap, FxIndexSet};
-use rustc_index::bit_set::HybridBitSet;
+use rustc_index::bit_set::BitSet;
 use rustc_index::interval::IntervalSet;
 use rustc_infer::infer::canonical::QueryRegionConstraints;
 use rustc_middle::mir::{BasicBlock, Body, ConstraintCategory, Local, Location};
@@ -106,7 +106,7 @@ struct LivenessResults<'me, 'typeck, 'flow, 'tcx> {
     cx: LivenessContext<'me, 'typeck, 'flow, 'tcx>,
 
     /// Set of points that define the current local.
-    defs: HybridBitSet<PointIndex>,
+    defs: BitSet<PointIndex>,
 
     /// Points where the current variable is "use live" -- meaning
     /// that there is a future "full use" that may use its value.
@@ -129,7 +129,7 @@ impl<'me, 'typeck, 'flow, 'tcx> LivenessResults<'me, 'typeck, 'flow, 'tcx> {
         let num_points = cx.elements.num_points();
         LivenessResults {
             cx,
-            defs: HybridBitSet::new_empty(num_points),
+            defs: BitSet::new_empty(num_points),
             use_live_at: IntervalSet::new(num_points),
             drop_live_at: IntervalSet::new(num_points),
             drop_locations: vec![],

compiler/rustc_index/src/bit_set.rs

@@ -293,7 +293,7 @@ impl<T: Idx> BitSet<T> {
         not_already
     }
 
-    fn last_set_in(&self, range: impl RangeBounds<T>) -> Option<T> {
+    pub fn last_set_in(&self, range: impl RangeBounds<T>) -> Option<T> {
         let (start, end) = inclusive_start_end(range, self.domain_size)?;
         let (start_word_index, _) = word_index_and_mask(start);
         let (end_word_index, end_mask) = word_index_and_mask(end);
@@ -1278,7 +1278,7 @@ impl<T: Idx> SparseBitSet<T> {
 }
 
 impl<T: Idx + Ord> SparseBitSet<T> {
-    fn last_set_in(&self, range: impl RangeBounds<T>) -> Option<T> {
+    pub fn last_set_in(&self, range: impl RangeBounds<T>) -> Option<T> {
         let mut last_leq = None;
         for e in self.iter() {
             if range.contains(e) {

compiler/rustc_mir_transform/src/nrvo.rs

@@ -1,7 +1,7 @@
 //! See the docs for [`RenameReturnPlace`].
 
 use rustc_hir::Mutability;
-use rustc_index::bit_set::HybridBitSet;
+use rustc_index::bit_set::BitSet;
 use rustc_middle::mir::visit::{MutVisitor, NonUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{self, BasicBlock, Local, Location};
 use rustc_middle::ty::TyCtxt;
@@ -123,7 +123,7 @@ fn find_local_assigned_to_return_place(
     body: &mut mir::Body<'_>,
 ) -> Option<Local> {
     let mut block = start;
-    let mut seen = HybridBitSet::new_empty(body.basic_blocks.len());
+    let mut seen = BitSet::new_empty(body.basic_blocks.len());
 
     // Iterate as long as `block` has exactly one predecessor that we have not yet visited.
     while seen.insert(block) {