pub struct MaybeTransitiveLiveLocals<'a> {
always_live: &'a BitSet<Local>,
}
Expand description
Like MaybeLiveLocals
, but does not mark locals as live if they are used in a dead assignment.
This is basically written for dead store elimination and nothing else.
All of the caveats of MaybeLiveLocals
apply.
Fields§
§always_live: &'a BitSet<Local>
Implementations§
Trait Implementations§
source§impl<'a, 'tcx> Analysis<'tcx> for MaybeTransitiveLiveLocals<'a>
impl<'a, 'tcx> Analysis<'tcx> for MaybeTransitiveLiveLocals<'a>
source§fn apply_statement_effect(
&mut self,
trans: &mut Self::Domain,
statement: &Statement<'tcx>,
location: Location
)
fn apply_statement_effect( &mut self, trans: &mut Self::Domain, statement: &Statement<'tcx>, location: Location )
Updates the current dataflow state with the effect of evaluating a statement.
source§fn apply_terminator_effect<'mir>(
&mut self,
trans: &mut Self::Domain,
terminator: &'mir Terminator<'tcx>,
location: Location
) -> TerminatorEdges<'mir, 'tcx>
fn apply_terminator_effect<'mir>( &mut self, trans: &mut Self::Domain, terminator: &'mir Terminator<'tcx>, location: Location ) -> TerminatorEdges<'mir, 'tcx>
Updates the current dataflow state with the effect of evaluating a terminator. Read more
source§fn apply_call_return_effect(
&mut self,
trans: &mut Self::Domain,
_block: BasicBlock,
return_places: CallReturnPlaces<'_, 'tcx>
)
fn apply_call_return_effect( &mut self, trans: &mut Self::Domain, _block: BasicBlock, return_places: CallReturnPlaces<'_, 'tcx> )
Updates the current dataflow state with the effect of a successful return from a
Call
terminator. Read moresource§fn apply_before_statement_effect(
&mut self,
_state: &mut Self::Domain,
_statement: &Statement<'tcx>,
_location: Location
)
fn apply_before_statement_effect( &mut self, _state: &mut Self::Domain, _statement: &Statement<'tcx>, _location: Location )
Updates the current dataflow state with an effect that occurs immediately before the
given statement. Read more
source§fn apply_before_terminator_effect(
&mut self,
_state: &mut Self::Domain,
_terminator: &Terminator<'tcx>,
_location: Location
)
fn apply_before_terminator_effect( &mut self, _state: &mut Self::Domain, _terminator: &Terminator<'tcx>, _location: Location )
Updates the current dataflow state with an effect that occurs immediately before the
given terminator. Read more
source§fn apply_switch_int_edge_effects(
&mut self,
_block: BasicBlock,
_discr: &Operand<'tcx>,
_apply_edge_effects: &mut impl SwitchIntEdgeEffects<Self::Domain>
)
fn apply_switch_int_edge_effects( &mut self, _block: BasicBlock, _discr: &Operand<'tcx>, _apply_edge_effects: &mut impl SwitchIntEdgeEffects<Self::Domain> )
Updates the current dataflow state with the effect of taking a particular branch in a
SwitchInt
terminator. Read moresource§impl<'a, 'tcx> AnalysisDomain<'tcx> for MaybeTransitiveLiveLocals<'a>
impl<'a, 'tcx> AnalysisDomain<'tcx> for MaybeTransitiveLiveLocals<'a>
§type Domain = ChunkedBitSet<Local>
type Domain = ChunkedBitSet<Local>
The type that holds the dataflow state at any given point in the program.
source§const NAME: &'static str = "transitive liveness"
const NAME: &'static str = "transitive liveness"
A descriptive name for this analysis. Used only for debugging. Read more
source§fn bottom_value(&self, body: &Body<'tcx>) -> Self::Domain
fn bottom_value(&self, body: &Body<'tcx>) -> Self::Domain
Returns the initial value of the dataflow state upon entry to each basic block.
source§impl<'a> Clone for MaybeTransitiveLiveLocals<'a>
impl<'a> Clone for MaybeTransitiveLiveLocals<'a>
source§fn clone(&self) -> MaybeTransitiveLiveLocals<'a>
fn clone(&self) -> MaybeTransitiveLiveLocals<'a>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreimpl<'a> Copy for MaybeTransitiveLiveLocals<'a>
Auto Trait Implementations§
impl<'a> RefUnwindSafe for MaybeTransitiveLiveLocals<'a>
impl<'a> Send for MaybeTransitiveLiveLocals<'a>
impl<'a> Sync for MaybeTransitiveLiveLocals<'a>
impl<'a> Unpin for MaybeTransitiveLiveLocals<'a>
impl<'a> UnwindSafe for MaybeTransitiveLiveLocals<'a>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<'tcx, A> CloneAnalysis for Awhere
A: Analysis<'tcx> + Copy,
impl<'tcx, A> CloneAnalysis for Awhere A: Analysis<'tcx> + Copy,
fn clone_analysis(&self) -> A
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 8 bytes