Struct rustc_mir_transform::dataflow_const_prop::CollectAndPatch

struct CollectAndPatch<'tcx, 'map> {
    tcx: TyCtxt<'tcx>,
    map: &'map Map,
    before_effect: FxHashMap<(Location, Place<'tcx>), ScalarTy<'tcx>>,
    assignments: FxHashMap<Location, ScalarTy<'tcx>>,
}

Fields

tcx: TyCtxt<'tcx>

map: &'map Map

before_effect: FxHashMap<(Location, Place<'tcx>), ScalarTy<'tcx>>

For a given MIR location, this stores the values of the operands used by that location. In particular, this is before the effect, such that the operands of _1 = _1 + _2 are properly captured. (This may become UB soon, but it is currently emitted even by safe code.)

assignments: FxHashMap<Location, ScalarTy<'tcx>>

Stores the assigned values for assignments where the Rvalue is constant.

Implementations

impl<'tcx, 'map> CollectAndPatch<'tcx, 'map>

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

fn make_operand(&self, scalar: ScalarTy<'tcx>) -> Operand<'tcx>

Trait Implementations

impl<'tcx, 'map> MutVisitor<'tcx> for CollectAndPatch<'tcx, 'map>

fn tcx<'a>(&'a self) -> TyCtxt<'tcx>

fn visit_statement(&mut self, statement: &mut Statement<'tcx>, location: Location)

fn visit_operand(&mut self, operand: &mut Operand<'tcx>, location: Location)

fn visit_body(&mut self, body: &mut Body<'tcx>)

fn visit_body_preserves_cfg(&mut self, body: &mut Body<'tcx>)

fn super_body_preserves_cfg(&mut self, body: &mut Body<'tcx>)

fn visit_basic_block_data(
    &mut self,
    block: BasicBlock,
    data: &mut BasicBlockData<'tcx>
)

fn visit_source_scope_data(&mut self, scope_data: &mut SourceScopeData<'tcx>)

fn visit_assign(
    &mut self,
    place: &mut Place<'tcx>,
    rvalue: &mut Rvalue<'tcx>,
    location: Location
)

fn visit_terminator(
    &mut self,
    terminator: &mut Terminator<'tcx>,
    location: Location
)

fn visit_assert_message(
    &mut self,
    msg: &mut AssertKind<Operand<'tcx>>,
    location: Location
)

fn visit_rvalue(&mut self, rvalue: &mut Rvalue<'tcx>, location: Location)

fn visit_ascribe_user_ty(
    &mut self,
    place: &mut Place<'tcx>,
    variance: &mut Variance,
    user_ty: &mut UserTypeProjection,
    location: Location
)

fn visit_coverage(&mut self, coverage: &mut Coverage, location: Location)

fn visit_retag(
    &mut self,
    kind: &mut RetagKind,
    place: &mut Place<'tcx>,
    location: Location
)

fn visit_place(
    &mut self,
    place: &mut Place<'tcx>,
    context: PlaceContext,
    location: Location
)

fn super_place(
    &mut self,
    place: &mut Place<'tcx>,
    context: PlaceContext,
    location: Location
)

fn process_projection<'a>(
    &mut self,
    projection: &'a [ProjectionElem<Local, Ty<'tcx>>],
    location: Location
) -> Option<Vec<ProjectionElem<Local, Ty<'tcx>>, Global>>

fn process_projection_elem(
    &mut self,
    elem: ProjectionElem<Local, Ty<'tcx>>,
    location: Location
) -> Option<ProjectionElem<Local, Ty<'tcx>>>

fn visit_constant(&mut self, constant: &mut Constant<'tcx>, location: Location)

fn visit_span(&mut self, span: &mut Span)

fn visit_source_info(&mut self, source_info: &mut SourceInfo)

fn visit_ty(&mut self, ty: &mut Ty<'tcx>, _: TyContext)

fn visit_user_type_projection(&mut self, ty: &mut UserTypeProjection)

fn visit_user_type_annotation(
    &mut self,
    index: UserTypeAnnotationIndex,
    ty: &mut CanonicalUserTypeAnnotation<'tcx>
)

fn visit_region(&mut self, region: &mut Region<'tcx>, _: Location)

fn visit_substs(&mut self, substs: &mut &'tcx List<GenericArg<'tcx>>, _: Location)

fn visit_local_decl(&mut self, local: Local, local_decl: &mut LocalDecl<'tcx>)

fn visit_var_debug_info(&mut self, var_debug_info: &mut VarDebugInfo<'tcx>)

fn visit_local(
    &mut self,
    _local: &mut Local,
    _context: PlaceContext,
    _location: Location
)

fn visit_source_scope(&mut self, scope: &mut SourceScope)

fn super_body(&mut self, body: &mut Body<'tcx>)

fn super_basic_block_data(
    &mut self,
    block: BasicBlock,
    data: &mut BasicBlockData<'tcx>
)

fn super_source_scope_data(&mut self, scope_data: &mut SourceScopeData<'tcx>)

fn super_statement(&mut self, statement: &mut Statement<'tcx>, location: Location)

fn super_assign(
    &mut self,
    place: &mut Place<'tcx>,
    rvalue: &mut Rvalue<'tcx>,
    location: Location
)

fn super_terminator(
    &mut self,
    terminator: &mut Terminator<'tcx>,
    location: Location
)

fn super_assert_message(
    &mut self,
    msg: &mut AssertKind<Operand<'tcx>>,
    location: Location
)

fn super_rvalue(&mut self, rvalue: &mut Rvalue<'tcx>, location: Location)

fn super_operand(&mut self, operand: &mut Operand<'tcx>, location: Location)

fn super_ascribe_user_ty(
    &mut self,
    place: &mut Place<'tcx>,
    _variance: &mut Variance,
    user_ty: &mut UserTypeProjection,
    location: Location
)

fn super_coverage(&mut self, _coverage: &mut Coverage, _location: Location)

fn super_retag(
    &mut self,
    _kind: &mut RetagKind,
    place: &mut Place<'tcx>,
    location: Location
)

fn super_local_decl(&mut self, local: Local, local_decl: &mut LocalDecl<'tcx>)

fn super_var_debug_info(&mut self, var_debug_info: &mut VarDebugInfo<'tcx>)

fn super_source_scope(&mut self, _scope: &mut SourceScope)

fn super_constant(&mut self, constant: &mut Constant<'tcx>, location: Location)

fn super_span(&mut self, _span: &mut Span)

fn super_source_info(&mut self, source_info: &mut SourceInfo)

fn super_user_type_projection(&mut self, _ty: &mut UserTypeProjection)

fn super_user_type_annotation(
    &mut self,
    _index: UserTypeAnnotationIndex,
    ty: &mut CanonicalUserTypeAnnotation<'tcx>
)

fn super_ty(&mut self, _ty: &mut Ty<'tcx>)

fn super_region(&mut self, _region: &mut Region<'tcx>)

fn super_substs(&mut self, _substs: &mut &'tcx List<GenericArg<'tcx>>)

fn visit_location(&mut self, body: &mut Body<'tcx>, location: Location)

impl<'mir, 'tcx, 'map> ResultsVisitor<'mir, 'tcx> for CollectAndPatch<'tcx, 'map>

type FlowState = State<FlatSet<ScalarTy<'tcx>>>

fn visit_statement_before_primary_effect(
    &mut self,
    state: &Self::FlowState,
    statement: &'mir Statement<'tcx>,
    location: Location
)

Called with the before_statement_effect of the given statement applied to state but not its statement_effect.

fn visit_statement_after_primary_effect(
    &mut self,
    state: &Self::FlowState,
    statement: &'mir Statement<'tcx>,
    location: Location
)

Called with both the before_statement_effect and the statement_effect of the given statement applied to state.

fn visit_terminator_before_primary_effect(
    &mut self,
    state: &Self::FlowState,
    terminator: &'mir Terminator<'tcx>,
    location: Location
)

Called with the before_terminator_effect of the given terminator applied to state but not its terminator_effect.

fn visit_block_start(
    &mut self,
    _state: &Self::FlowState,
    _block_data: &'mir BasicBlockData<'tcx>,
    _block: BasicBlock
)

fn visit_terminator_after_primary_effect(
    &mut self,
    _state: &Self::FlowState,
    _terminator: &'mir Terminator<'tcx>,
    _location: Location
)

Called with both the before_terminator_effect and the terminator_effect of the given terminator applied to state.

fn visit_block_end(
    &mut self,
    _state: &Self::FlowState,
    _block_data: &'mir BasicBlockData<'tcx>,
    _block: BasicBlock
)

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: 80 bytes