Struct rustc_const_eval::transform::check_consts::resolver::FlowSensitiveAnalysis

pub(super) struct FlowSensitiveAnalysis<'a, 'mir, 'tcx, Q> {
    ccx: &'a ConstCx<'mir, 'tcx>,
    _qualif: PhantomData<Q>,
}

The dataflow analysis used to propagate qualifs on arbitrary CFGs.

Fields

ccx: &'a ConstCx<'mir, 'tcx>

_qualif: PhantomData<Q>

Implementations

impl<'a, 'mir, 'tcx, Q> FlowSensitiveAnalysis<'a, 'mir, 'tcx, Q> where
    Q: Qualif, 

pub(super) fn new(_: Q, ccx: &'a ConstCx<'mir, 'tcx>) -> Self

fn transfer_function(
    &self,
    state: &'a mut BitSet<Local>
) -> TransferFunction<'a, 'mir, 'tcx, Q>

Trait Implementations

impl<Q, 'tcx> Analysis<'tcx> for FlowSensitiveAnalysis<'_, '_, 'tcx, Q> where
    Q: Qualif, 

fn apply_statement_effect(
    &self,
    state: &mut Self::Domain,
    statement: &Statement<'tcx>,
    location: Location
)

Updates the current dataflow state with the effect of evaluating a statement.

fn apply_terminator_effect(
    &self,
    state: &mut Self::Domain,
    terminator: &Terminator<'tcx>,
    location: Location
)

Updates the current dataflow state with the effect of evaluating a terminator.

fn apply_call_return_effect(
    &self,
    state: &mut Self::Domain,
    block: BasicBlock,
    func: &Operand<'tcx>,
    args: &[Operand<'tcx>],
    return_place: Place<'tcx>
)

Updates the current dataflow state with the effect of a successful return from a Call terminator.

fn apply_before_statement_effect(
    &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.

fn apply_before_terminator_effect(
    &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.

fn apply_yield_resume_effect(
    &self,
    _state: &mut Self::Domain,
    _resume_block: BasicBlock,
    _resume_place: Place<'tcx>
)

Updates the current dataflow state with the effect of resuming from a Yield terminator.

fn apply_switch_int_edge_effects(
    &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.

fn into_engine(
    self,
    tcx: TyCtxt<'tcx>,
    body: &'mir Body<'tcx>
) -> Engine<'mir, 'tcx, Self>

Creates an Engine to find the fixpoint for this dataflow problem.

impl<Q, 'tcx> AnalysisDomain<'tcx> for FlowSensitiveAnalysis<'_, '_, 'tcx, Q> where
    Q: Qualif, 

type Domain = BitSet<Local>

The type that holds the dataflow state at any given point in the program.

const NAME: &'static str

A descriptive name for this analysis. Used only for debugging.

fn bottom_value(&self, body: &Body<'tcx>) -> Self::Domain

The initial value of the dataflow state upon entry to each basic block.

fn initialize_start_block(&self, _body: &Body<'tcx>, state: &mut Self::Domain)

Mutates the initial value of the dataflow state upon entry to the START_BLOCK.

type Direction: Direction = Forward

The direction of this analysis. Either Forward or Backward.

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