bjoernager/rust
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Introduce a no-op PlaceMention statement for let _ =.

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This commit is contained in:
Camille GILLOT 2022-09-06 18:41:01 +02:00
parent be758ef5ab
commit 4462bb54e3
44 changed files with 139 additions and 20 deletions
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1
compiler/rustc_mir_transform/src/check_unsafety.rs
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@ -101,6 +101,7 @@ impl<'tcx> Visitor<'tcx> for UnsafetyChecker<'_, 'tcx> {
| StatementKind::StorageDead(..)
| StatementKind::Retag { .. }
| StatementKind::AscribeUserType(..)
| StatementKind::PlaceMention(..)
| StatementKind::Coverage(..)
| StatementKind::Intrinsic(..)
| StatementKind::ConstEvalCounter

1
compiler/rustc_mir_transform/src/cleanup_post_borrowck.rs
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@ -24,6 +24,7 @@ impl<'tcx> MirPass<'tcx> for CleanupPostBorrowck {
for statement in basic_block.statements.iter_mut() {
match statement.kind {
StatementKind::AscribeUserType(..)
| StatementKind::PlaceMention(..)
| StatementKind::Assign(box (_, Rvalue::Ref(_, BorrowKind::Shallow, _)))
| StatementKind::FakeRead(..) => statement.make_nop(),
_ => (),

1
compiler/rustc_mir_transform/src/coverage/spans.rs
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@ -832,6 +832,7 @@ pub(super) fn filtered_statement_span(statement: &Statement<'_>) -> Option<Span>
| StatementKind::SetDiscriminant { .. }
| StatementKind::Deinit(..)
| StatementKind::Retag(_, _)
| StatementKind::PlaceMention(..)
| StatementKind::AscribeUserType(_, _) => {
Some(statement.source_info.span)
}

4
compiler/rustc_mir_transform/src/dead_store_elimination.rs
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@ -56,7 +56,9 @@ pub fn eliminate<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>, borrowed: &BitS
| StatementKind::ConstEvalCounter
| StatementKind::Nop => (),
StatementKind::FakeRead(_) | StatementKind::AscribeUserType(_, _) => {
StatementKind::FakeRead(_)
| StatementKind::PlaceMention(_)
| StatementKind::AscribeUserType(_, _) => {
bug!("{:?} not found in this MIR phase!", &statement.kind)
}
}

1
compiler/rustc_mir_transform/src/dest_prop.rs
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@ -581,6 +581,7 @@ impl WriteInfo {
| StatementKind::ConstEvalCounter
| StatementKind::Nop
| StatementKind::Coverage(_)
| StatementKind::PlaceMention(_)
| StatementKind::StorageLive(_)
| StatementKind::StorageDead(_) => (),
StatementKind::FakeRead(_) | StatementKind::AscribeUserType(_, _) => {

1
compiler/rustc_mir_transform/src/generator.rs
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@ -1647,6 +1647,7 @@ impl<'tcx> Visitor<'tcx> for EnsureGeneratorFieldAssignmentsNeverAlias<'_> {
| StatementKind::StorageDead(_)
| StatementKind::Retag(..)
| StatementKind::AscribeUserType(..)
| StatementKind::PlaceMention(..)
| StatementKind::Coverage(..)
| StatementKind::Intrinsic(..)
| StatementKind::ConstEvalCounter

1
compiler/rustc_mir_transform/src/remove_noop_landing_pads.rs
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@ -33,6 +33,7 @@ impl RemoveNoopLandingPads {
StatementKind::FakeRead(..)
| StatementKind::StorageLive(_)
| StatementKind::StorageDead(_)
| StatementKind::PlaceMention(..)
| StatementKind::AscribeUserType(..)
| StatementKind::Coverage(..)
| StatementKind::ConstEvalCounter

2
compiler/rustc_mir_transform/src/separate_const_switch.rs
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@ -245,6 +245,7 @@ fn is_likely_const<'tcx>(mut tracked_place: Place<'tcx>, block: &BasicBlockData<
| StatementKind::StorageLive(_)
| StatementKind::Retag(_, _)
| StatementKind::AscribeUserType(_, _)
| StatementKind::PlaceMention(..)
| StatementKind::Coverage(_)
| StatementKind::StorageDead(_)
| StatementKind::Intrinsic(_)
@ -315,6 +316,7 @@ fn find_determining_place<'tcx>(
| StatementKind::StorageDead(_)
| StatementKind::Retag(_, _)
| StatementKind::AscribeUserType(_, _)
| StatementKind::PlaceMention(..)
| StatementKind::Coverage(_)
| StatementKind::Intrinsic(_)
| StatementKind::ConstEvalCounter

1
compiler/rustc_mir_transform/src/simplify.rs
View file

@ -525,6 +525,7 @@ impl<'tcx> Visitor<'tcx> for UsedLocals {
| StatementKind::Retag(..)
| StatementKind::Coverage(..)
| StatementKind::FakeRead(..)
| StatementKind::PlaceMention(..)
| StatementKind::AscribeUserType(..) => {
self.super_statement(statement, location);
}