bjoernager/rust
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rename BitSet to DenseBitSet

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This should make it clearer that this bitset is dense, with the
advantages and disadvantages that it entails.
This commit is contained in:
Rémy Rakic 2025-01-07 15:19:05 +00:00
parent 7e4077d06f
commit a13354bea0
67 changed files with 367 additions and 356 deletions
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10
compiler/rustc_mir_transform/src/ref_prop.rs
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@ -2,7 +2,7 @@ use std::borrow::Cow;
use rustc_data_structures::fx::FxHashSet;
use rustc_index::IndexVec;
use rustc_index::bit_set::BitSet;
use rustc_index::bit_set::DenseBitSet;
use rustc_middle::bug;
use rustc_middle::mir::visit::*;
use rustc_middle::mir::*;
@ -132,7 +132,7 @@ fn compute_replacement<'tcx>(
let mut targets = IndexVec::from_elem(Value::Unknown, &body.local_decls);
// Set of locals for which we will remove their storage statement. This is useful for
// reborrowed references.
let mut storage_to_remove = BitSet::new_empty(body.local_decls.len());
let mut storage_to_remove = DenseBitSet::new_empty(body.local_decls.len());
let fully_replacable_locals = fully_replacable_locals(ssa);
@ -324,8 +324,8 @@ fn compute_replacement<'tcx>(
///
/// We consider a local to be replacable iff it's only used in a `Deref` projection `*_local` or
/// non-use position (like storage statements and debuginfo).
fn fully_replacable_locals(ssa: &SsaLocals) -> BitSet<Local> {
let mut replacable = BitSet::new_empty(ssa.num_locals());
fn fully_replacable_locals(ssa: &SsaLocals) -> DenseBitSet<Local> {
let mut replacable = DenseBitSet::new_empty(ssa.num_locals());
// First pass: for each local, whether its uses can be fully replaced.
for local in ssa.locals() {
@ -344,7 +344,7 @@ fn fully_replacable_locals(ssa: &SsaLocals) -> BitSet<Local> {
struct Replacer<'tcx> {
tcx: TyCtxt<'tcx>,
targets: IndexVec<Local, Value<'tcx>>,
storage_to_remove: BitSet<Local>,
storage_to_remove: DenseBitSet<Local>,
allowed_replacements: FxHashSet<(Local, Location)>,
any_replacement: bool,
}