Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Minor by_move_body impl cleanups #123366

Merged
merged 2 commits into from
Apr 2, 2024
Merged

Minor by_move_body impl cleanups #123366

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
b4993c4
Prefer `UnordSet` over `FxHashSet` where possible
oli-obk Apr 2, 2024
6f3cc09
Avoid an `is_empty()` followed by an index op in favor of a single fa…
oli-obk Apr 2, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 6 additions & 6 deletions compiler/rustc_mir_transform/src/coroutine/by_move_body.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
//! be a coroutine body that takes all of its upvars by-move, and which we stash
//! into the `CoroutineInfo` for all coroutines returned by coroutine-closures.

use rustc_data_structures::fx::FxIndexSet;
use rustc_data_structures::unord::UnordSet;
use rustc_hir as hir;
use rustc_middle::mir::visit::MutVisitor;
use rustc_middle::mir::{self, dump_mir, MirPass};
Expand Down Expand Up @@ -33,7 +33,7 @@ impl<'tcx> MirPass<'tcx> for ByMoveBody {
return;
}

let mut by_ref_fields = FxIndexSet::default();
let mut by_ref_fields = UnordSet::default();
let by_move_upvars = Ty::new_tup_from_iter(
tcx,
tcx.closure_captures(coroutine_def_id).iter().enumerate().map(|(idx, capture)| {
Expand Down Expand Up @@ -73,7 +73,7 @@ impl<'tcx> MirPass<'tcx> for ByMoveBody {

struct MakeByMoveBody<'tcx> {
tcx: TyCtxt<'tcx>,
by_ref_fields: FxIndexSet<FieldIdx>,
by_ref_fields: UnordSet<FieldIdx>,
by_move_coroutine_ty: Ty<'tcx>,
}

Expand All @@ -89,11 +89,11 @@ impl<'tcx> MutVisitor<'tcx> for MakeByMoveBody<'tcx> {
location: mir::Location,
) {
if place.local == ty::CAPTURE_STRUCT_LOCAL
&& !place.projection.is_empty()
&& let mir::ProjectionElem::Field(idx, ty) = place.projection[0]
&& let Some((&mir::ProjectionElem::Field(idx, ty), projection)) =
place.projection.split_first()
&& self.by_ref_fields.contains(&idx)
{
let (begin, end) = place.projection[1..].split_first().unwrap();
let (begin, end) = projection.split_first().unwrap();
// FIXME(async_closures): I'm actually a bit surprised to see that we always
// initially deref the by-ref upvars. If this is not actually true, then we
// will at least get an ICE that explains why this isn't true :^)
Expand Down
Loading