Struct Promoter

struct Promoter<'a, 'tcx> {
    tcx: TyCtxt<'tcx>,
    source: &'a mut Body<'tcx>,
    promoted: Body<'tcx>,
    temps: &'a mut IndexVec<Local, TempState>,
    extra_statements: &'a mut Vec<(Location, Statement<'tcx>)>,
    required_consts: Vec<ConstOperand<'tcx>>,
    keep_original: bool,
    add_to_required: bool,
}

Fields

tcx: TyCtxt<'tcx>

source: &'a mut Body<'tcx>

promoted: Body<'tcx>

temps: &'a mut IndexVec<Local, TempState>

extra_statements: &'a mut Vec<(Location, Statement<'tcx>)>

required_consts: Vec<ConstOperand<'tcx>>

Used to assemble the required_consts list while building the promoted.

keep_original: bool

If true, all nested temps are also kept in the source MIR, not moved to the promoted MIR.

add_to_required: bool

If true, add the new const (the promoted) to the required_consts of the parent MIR. This is initially false and then set by the visitor when it encounters a Call terminator.

Implementations

impl<'a, 'tcx> Promoter<'a, 'tcx>

fn new_block(&mut self) -> BasicBlock

fn assign(&mut self, dest: Local, rvalue: Rvalue<'tcx>, span: Span)

fn is_temp_kind(&self, local: Local) -> bool

fn promote_temp(&mut self, temp: Local) -> Local

Copies the initialization of this temp to the promoted MIR, recursing through temps.

fn promote_candidate( self, candidate: Candidate, next_promoted_id: usize, ) -> Body<'tcx>

Trait Implementations

impl<'a, 'tcx> MutVisitor<'tcx> for Promoter<'a, 'tcx>

Replaces all temporaries with their promoted counterparts.

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

fn visit_local(&mut self, local: &mut Local, _: PlaceContext, _: Location)

fn visit_const_operand( &mut self, constant: &mut 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).

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

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_operand(&mut self, operand: &mut Operand<'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, kind: &mut CoverageKind, 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>>>>

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

fn visit_ty_const(&mut self, ct: &mut Const<'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_args( &mut self, args: &mut &'tcx RawList<(), 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_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, _kind: &mut CoverageKind, _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_const_operand( &mut self, constant: &mut ConstOperand<'tcx>, location: Location, )

fn super_ty_const(&mut self, _ct: &mut Const<'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_args(&mut self, _args: &mut &'tcx RawList<(), GenericArg<'tcx>>)

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

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: 488 bytes