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Remove unused Lift derives.

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I found these by commenting out all `Lift` derives and then adding back
the ones that were necessary to successfully compile.
This commit is contained in:
Nicholas Nethercote
2023-09-14 09:46:18 +10:00
parent 6b1980f9cf
commit af7d3e501b
17 changed files with 49 additions and 51 deletions
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24
compiler/rustc_middle/src/traits/mod.rs
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@@ -86,7 +86,7 @@ pub enum Reveal {
///
/// We do not want to intern this as there are a lot of obligation causes which
/// only live for a short period of time.
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub struct ObligationCause<'tcx> {
pub span: Span,
@@ -194,7 +194,7 @@ impl<'tcx> ObligationCause<'tcx> {
}
}
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub struct UnifyReceiverContext<'tcx> {
pub assoc_item: ty::AssocItem,
@@ -202,7 +202,7 @@ pub struct UnifyReceiverContext<'tcx> {
pub args: GenericArgsRef<'tcx>,
}
#[derive(Clone, PartialEq, Eq, Lift, Default, HashStable)]
#[derive(Clone, PartialEq, Eq, Default, HashStable)]
#[derive(TypeVisitable, TypeFoldable, TyEncodable, TyDecodable)]
pub struct InternedObligationCauseCode<'tcx> {
/// `None` for `ObligationCauseCode::MiscObligation` (a common case, occurs ~60% of
@@ -238,7 +238,7 @@ impl<'tcx> std::ops::Deref for InternedObligationCauseCode<'tcx> {
}
}
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub enum ObligationCauseCode<'tcx> {
/// Not well classified or should be obvious from the span.
@@ -470,7 +470,7 @@ pub enum WellFormedLoc {
},
}
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub struct ImplDerivedObligationCause<'tcx> {
pub derived: DerivedObligationCause<'tcx>,
@@ -531,7 +531,7 @@ impl<'tcx> ty::Lift<'tcx> for StatementAsExpression {
}
}
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub struct MatchExpressionArmCause<'tcx> {
pub arm_block_id: Option<hir::HirId>,
@@ -547,7 +547,7 @@ pub struct MatchExpressionArmCause<'tcx> {
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
#[derive(Lift, TypeFoldable, TypeVisitable, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeFoldable, TypeVisitable, HashStable, TyEncodable, TyDecodable)]
pub struct IfExpressionCause<'tcx> {
pub then_id: hir::HirId,
pub else_id: hir::HirId,
@@ -557,7 +557,7 @@ pub struct IfExpressionCause<'tcx> {
pub opt_suggest_box_span: Option<Span>,
}
#[derive(Clone, Debug, PartialEq, Eq, Lift, HashStable, TyEncodable, TyDecodable)]
#[derive(Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
#[derive(TypeVisitable, TypeFoldable)]
pub struct DerivedObligationCause<'tcx> {
/// The trait predicate of the parent obligation that led to the
@@ -570,7 +570,7 @@ pub struct DerivedObligationCause<'tcx> {
pub parent_code: InternedObligationCauseCode<'tcx>,
}
#[derive(Clone, Debug, TypeVisitable, Lift)]
#[derive(Clone, Debug, TypeVisitable)]
pub enum SelectionError<'tcx> {
/// The trait is not implemented.
Unimplemented,
@@ -593,7 +593,7 @@ pub enum SelectionError<'tcx> {
OpaqueTypeAutoTraitLeakageUnknown(DefId),
}
#[derive(Clone, Debug, TypeVisitable, Lift)]
#[derive(Clone, Debug, TypeVisitable)]
pub struct SelectionOutputTypeParameterMismatch<'tcx> {
pub found_trait_ref: ty::PolyTraitRef<'tcx>,
pub expected_trait_ref: ty::PolyTraitRef<'tcx>,
@@ -638,7 +638,7 @@ pub type SelectionResult<'tcx, T> = Result<Option<T>, SelectionError<'tcx>>;
/// ### The type parameter `N`
///
/// See explanation on `ImplSourceUserDefinedData`.
#[derive(Clone, PartialEq, Eq, TyEncodable, TyDecodable, HashStable, Lift)]
#[derive(Clone, PartialEq, Eq, TyEncodable, TyDecodable, HashStable)]
#[derive(TypeFoldable, TypeVisitable)]
pub enum ImplSource<'tcx, N> {
/// ImplSource identifying a particular impl.
@@ -704,7 +704,7 @@ impl<'tcx, N> ImplSource<'tcx, N> {
/// is `Obligation`, as one might expect. During codegen, however, this
/// is `()`, because codegen only requires a shallow resolution of an
/// impl, and nested obligations are satisfied later.
#[derive(Clone, PartialEq, Eq, TyEncodable, TyDecodable, HashStable, Lift)]
#[derive(Clone, PartialEq, Eq, TyEncodable, TyDecodable, HashStable)]
#[derive(TypeFoldable, TypeVisitable)]
pub struct ImplSourceUserDefinedData<'tcx, N> {
pub impl_def_id: DefId,