Struct rustc_mir_transform::cost_checker::CostChecker

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pub(crate) struct CostChecker<'b, 'tcx> {
    tcx: TyCtxt<'tcx>,
    param_env: ParamEnv<'tcx>,
    penalty: usize,
    bonus: usize,
    callee_body: &'b Body<'tcx>,
    instance: Option<Instance<'tcx>>,
}
Expand description

Verify that the callee body is compatible with the caller.

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§tcx: TyCtxt<'tcx>§param_env: ParamEnv<'tcx>§penalty: usize§bonus: usize§callee_body: &'b Body<'tcx>§instance: Option<Instance<'tcx>>

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impl<'b, 'tcx> CostChecker<'b, 'tcx>

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pub fn new( tcx: TyCtxt<'tcx>, param_env: ParamEnv<'tcx>, instance: Option<Instance<'tcx>>, callee_body: &'b Body<'tcx>, ) -> CostChecker<'b, 'tcx>

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pub fn add_function_level_costs(&mut self)

Add function-level costs not well-represented by the block-level costs.

Needed because the CostChecker is used sometimes for just blocks, and even the full Inline doesn’t call visit_body, so there’s nowhere to put this logic in the visitor.

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pub fn cost(&self) -> usize

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fn instantiate_ty(&self, v: Ty<'tcx>) -> Ty<'tcx>

Trait Implementations§

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impl<'b, 'tcx> Clone for CostChecker<'b, 'tcx>

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fn clone(&self) -> CostChecker<'b, 'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> Visitor<'tcx> for CostChecker<'_, 'tcx>

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

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

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

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

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

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

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

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

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

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

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fn visit_coverage(&mut self, kind: &CoverageKind, location: Location)

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

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

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fn visit_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location, )

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fn visit_projection_elem( &mut self, place_ref: PlaceRef<'tcx>, elem: ProjectionElem<Local, Ty<'tcx>>, context: PlaceContext, location: Location, )

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

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fn super_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location, )

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fn super_projection_elem( &mut self, _place_ref: PlaceRef<'tcx>, elem: ProjectionElem<Local, Ty<'tcx>>, _context: PlaceContext, location: Location, )

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fn visit_const_operand( &mut self, constant: &ConstOperand<'tcx>, location: Location, )

This is called for every constant in the MIR body and every required_consts (i.e., including consts that have been dead-code-eliminated).
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fn visit_ty_const(&mut self, ct: Const<'tcx>, location: Location)

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fn visit_span(&mut self, span: Span)

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

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

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

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

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

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fn visit_args( &mut self, args: &&'tcx RawList<(), GenericArg<'tcx>>, _: Location, )

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

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

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

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fn visit_source_scope(&mut self, scope: SourceScope)

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

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

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

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

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

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

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

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

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

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

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fn super_coverage(&mut self, _kind: &CoverageKind, _location: Location)

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

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

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

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fn super_source_scope(&mut self, _scope: SourceScope)

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fn super_const_operand( &mut self, constant: &ConstOperand<'tcx>, location: Location, )

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fn super_ty_const(&mut self, _ct: Const<'tcx>, _location: Location)

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fn super_span(&mut self, _span: Span)

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

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

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

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

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

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fn super_args(&mut self, _args: &&'tcx RawList<(), GenericArg<'tcx>>)

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

Auto Trait Implementations§

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impl<'b, 'tcx> Freeze for CostChecker<'b, 'tcx>

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impl<'b, 'tcx> !RefUnwindSafe for CostChecker<'b, 'tcx>

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impl<'b, 'tcx> !Send for CostChecker<'b, 'tcx>

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impl<'b, 'tcx> !Sync for CostChecker<'b, 'tcx>

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impl<'b, 'tcx> Unpin for CostChecker<'b, 'tcx>

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impl<'b, 'tcx> !UnwindSafe for CostChecker<'b, 'tcx>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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where T: 'static + ?Sized,

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where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

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where F: FnOnce(&Self) -> bool,

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type Error = !

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Size: 72 bytes