Struct ConstAnalysis

struct ConstAnalysis<'a, 'tcx> {
    map: Map<'tcx>,
    tcx: TyCtxt<'tcx>,
    local_decls: &'a LocalDecls<'tcx>,
    ecx: InterpCx<'tcx, DummyMachine>,
    typing_env: TypingEnv<'tcx>,
}

Fields

map: Map<'tcx>

tcx: TyCtxt<'tcx>

local_decls: &'a LocalDecls<'tcx>

ecx: InterpCx<'tcx, DummyMachine>

typing_env: TypingEnv<'tcx>

Implementations

impl<'a, 'tcx> ConstAnalysis<'a, 'tcx>

fn new(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, map: Map<'tcx>) -> Self

fn handle_statement( &self, statement: &Statement<'tcx>, state: &mut State<FlatSet<Scalar>>, )

fn handle_intrinsic(&self, intrinsic: &NonDivergingIntrinsic<'tcx>)

fn handle_operand( &self, operand: &Operand<'tcx>, state: &mut State<FlatSet<Scalar>>, ) -> ValueOrPlace<FlatSet<Scalar>>

fn handle_terminator<'mir>( &self, terminator: &'mir Terminator<'tcx>, state: &mut State<FlatSet<Scalar>>, ) -> TerminatorEdges<'mir, 'tcx>

The effect of a successful function call return should not be applied here, see Analysis::apply_primary_terminator_effect.

fn handle_call_return( &self, return_places: CallReturnPlaces<'_, 'tcx>, state: &mut State<FlatSet<Scalar>>, )

fn handle_set_discriminant( &self, place: Place<'tcx>, variant_index: VariantIdx, state: &mut State<FlatSet<Scalar>>, )

fn handle_assign( &self, target: Place<'tcx>, rvalue: &Rvalue<'tcx>, state: &mut State<FlatSet<Scalar>>, )

fn handle_rvalue( &self, rvalue: &Rvalue<'tcx>, state: &mut State<FlatSet<Scalar>>, ) -> ValueOrPlace<FlatSet<Scalar>>

fn handle_constant( &self, constant: &ConstOperand<'tcx>, _state: &mut State<FlatSet<Scalar>>, ) -> FlatSet<Scalar>

fn handle_switch_int<'mir>( &self, discr: &'mir Operand<'tcx>, targets: &'mir SwitchTargets, state: &mut State<FlatSet<Scalar>>, ) -> TerminatorEdges<'mir, 'tcx>

fn assign_operand( &self, state: &mut State<FlatSet<Scalar>>, place: PlaceIndex, operand: &Operand<'tcx>, )

The caller must have flooded place.

fn assign_constant( &self, state: &mut State<FlatSet<Scalar>>, place: PlaceIndex, operand: OpTy<'tcx>, projection: &[PlaceElem<'tcx>], )

The caller must have flooded place.

Perform: place = operand.projection.

fn binary_op( &self, state: &mut State<FlatSet<Scalar>>, op: BinOp, left: &Operand<'tcx>, right: &Operand<'tcx>, ) -> (FlatSet<Scalar>, FlatSet<Scalar>)

fn eval_operand( &self, op: &Operand<'tcx>, state: &mut State<FlatSet<Scalar>>, ) -> FlatSet<ImmTy<'tcx>>

fn eval_discriminant( &self, enum_ty: Ty<'tcx>, variant_index: VariantIdx, ) -> Option<Scalar>

fn wrap_immediate(&self, imm: Immediate) -> FlatSet<Scalar>

Trait Implementations

impl<'tcx> Analysis<'tcx> for ConstAnalysis<'_, 'tcx>

const NAME: &'static str = "ConstAnalysis"

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

type Domain = State<FlatSet<Scalar>>

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

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

Returns 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.

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

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

fn apply_primary_terminator_effect<'mir>( &mut self, state: &mut Self::Domain, terminator: &'mir Terminator<'tcx>, _location: Location, ) -> TerminatorEdges<'mir, 'tcx>

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

fn apply_call_return_effect( &mut self, state: &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.

type Direction = Forward

The direction of this analysis. Either Forward or Backward.

type SwitchIntData = !

Auxiliary data used for analyzing SwitchInt terminators, if necessary.

fn apply_early_statement_effect( &mut self, _state: &mut Self::Domain, _statement: &Statement<'tcx>, _location: Location, )

Updates the current dataflow state with an “early” effect, i.e. one that occurs immediately before the given statement.

fn apply_early_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.

fn get_switch_int_data( &mut self, _block: BasicBlock, _discr: &Operand<'tcx>, ) -> Option<Self::SwitchIntData>

Used to update the current dataflow state with the effect of taking a particular branch in a SwitchInt terminator.

fn apply_switch_int_edge_effect( &mut self, _data: &mut Self::SwitchIntData, _state: &mut Self::Domain, _edge: SwitchIntTarget, )

See comments on get_switch_int_data.

fn iterate_to_fixpoint<'mir>( self, tcx: TyCtxt<'tcx>, body: &'mir Body<'tcx>, pass_name: Option<&'static str>, ) -> Results<'tcx, Self>

where Self: Sized, Self::Domain: DebugWithContext<Self>,

Finds the fixpoint for this dataflow problem.

impl<'tcx> DebugWithContext<ConstAnalysis<'_, 'tcx>> for State<FlatSet<Scalar>>

This is used to visualize the dataflow analysis.

fn fmt_with( &self, ctxt: &ConstAnalysis<'_, 'tcx>, f: &mut Formatter<'_>, ) -> Result

fn fmt_diff_with( &self, old: &Self, ctxt: &ConstAnalysis<'_, 'tcx>, f: &mut Formatter<'_>, ) -> Result

Print the difference between self and old.

impl<'mir, 'tcx> ResultsVisitor<'mir, 'tcx, ConstAnalysis<'_, 'tcx>> for Collector<'_, 'tcx>

fn visit_after_early_statement_effect( &mut self, results: &mut Results<'tcx, ConstAnalysis<'_, 'tcx>>, state: &State<FlatSet<Scalar>>, statement: &'mir Statement<'tcx>, location: Location, )

Called after the “early” effect of the given statement is applied to state.

fn visit_after_primary_statement_effect( &mut self, results: &mut Results<'tcx, ConstAnalysis<'_, 'tcx>>, state: &State<FlatSet<Scalar>>, statement: &'mir Statement<'tcx>, location: Location, )

Called after the “primary” effect of the given statement is applied to state.

fn visit_after_early_terminator_effect( &mut self, results: &mut Results<'tcx, ConstAnalysis<'_, 'tcx>>, state: &State<FlatSet<Scalar>>, terminator: &'mir Terminator<'tcx>, location: Location, )

Called after the “early” effect of the given terminator is applied to state.

fn visit_block_start(&mut self, _state: &<A as Analysis<'tcx>>::Domain)

fn visit_after_primary_terminator_effect( &mut self, _results: &mut Results<'tcx, A>, _state: &<A as Analysis<'tcx>>::Domain, _terminator: &'mir Terminator<'tcx>, _location: Location, )

Called after the “primary” effect of the given terminator is applied to state.

fn visit_block_end(&mut self, _state: &<A as Analysis<'tcx>>::Domain)

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: 408 bytes