Struct rustc_mir_transform::const_prop::ConstPropagator
source · struct ConstPropagator<'mir, 'tcx> {
ecx: InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>,
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>,
local_decls: &'mir IndexSlice<Local, LocalDecl<'tcx>>,
patch: Patch<'tcx>,
}
Expand description
Finds optimization opportunities on the MIR.
Fields§
§ecx: InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>
§tcx: TyCtxt<'tcx>
§param_env: ParamEnv<'tcx>
§local_decls: &'mir IndexSlice<Local, LocalDecl<'tcx>>
§patch: Patch<'tcx>
Implementations§
source§impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx>
impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx>
fn new(body: &'mir Body<'tcx>, tcx: TyCtxt<'tcx>) -> ConstPropagator<'mir, 'tcx>
fn get_const(&self, place: Place<'tcx>) -> Option<OpTy<'tcx>>
sourcefn remove_const(
ecx: &mut InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>,
local: Local
)
fn remove_const( ecx: &mut InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>, local: Local )
Remove local
from the pool of Locals
. Allows writing to them,
but not reading from them anymore.
fn check_rvalue(&mut self, rvalue: &Rvalue<'tcx>) -> Option<()>
fn eval_rvalue_with_identities( &mut self, rvalue: &Rvalue<'tcx>, place: Place<'tcx> ) -> Option<()>
fn replace_with_const(&mut self, place: Place<'tcx>) -> Option<Const<'tcx>>
fn ensure_not_propagated(&self, local: Local)
Trait Implementations§
source§impl HasDataLayout for ConstPropagator<'_, '_>
impl HasDataLayout for ConstPropagator<'_, '_>
fn data_layout(&self) -> &TargetDataLayout
source§impl<'tcx> HasParamEnv<'tcx> for ConstPropagator<'_, 'tcx>
impl<'tcx> HasParamEnv<'tcx> for ConstPropagator<'_, 'tcx>
source§impl<'tcx> LayoutOfHelpers<'tcx> for ConstPropagator<'_, 'tcx>
impl<'tcx> LayoutOfHelpers<'tcx> for ConstPropagator<'_, 'tcx>
§type LayoutOfResult = Result<TyAndLayout<'tcx, Ty<'tcx>>, LayoutError<'tcx>>
type LayoutOfResult = Result<TyAndLayout<'tcx, Ty<'tcx>>, LayoutError<'tcx>>
The
TyAndLayout
-wrapping type (or TyAndLayout
itself), which will be
returned from layout_of
(see also handle_layout_err
).source§fn handle_layout_err(
&self,
err: LayoutError<'tcx>,
_: Span,
_: Ty<'tcx>
) -> LayoutError<'tcx>
fn handle_layout_err( &self, err: LayoutError<'tcx>, _: Span, _: Ty<'tcx> ) -> LayoutError<'tcx>
Helper used for
layout_of
, to adapt tcx.layout_of(...)
into a
Self::LayoutOfResult
(which does not need to be a Result<...>
). Read moresource§fn layout_tcx_at_span(&self) -> Span
fn layout_tcx_at_span(&self) -> Span
Span
to use for tcx.at(span)
, from layout_of
.source§impl<'tcx> Visitor<'tcx> for ConstPropagator<'_, 'tcx>
impl<'tcx> Visitor<'tcx> for ConstPropagator<'_, 'tcx>
fn visit_operand(&mut self, operand: &Operand<'tcx>, location: Location)
fn visit_projection_elem( &mut self, _: PlaceRef<'tcx>, elem: PlaceElem<'tcx>, _: PlaceContext, location: Location )
fn visit_assign( &mut self, place: &Place<'tcx>, rvalue: &Rvalue<'tcx>, location: Location )
fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location)
fn visit_basic_block_data( &mut self, block: BasicBlock, data: &BasicBlockData<'tcx> )
fn visit_body(&mut self, body: &Body<'tcx>)
fn visit_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)
fn visit_terminator( &mut self, terminator: &Terminator<'tcx>, location: Location )
fn visit_assert_message( &mut self, msg: &AssertKind<Operand<'tcx>>, location: Location )
fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)
fn visit_ascribe_user_ty( &mut self, place: &Place<'tcx>, variance: Variance, user_ty: &UserTypeProjection, location: Location )
fn visit_coverage(&mut self, coverage: &Coverage, location: Location)
fn visit_retag( &mut self, kind: RetagKind, place: &Place<'tcx>, location: Location )
fn visit_place( &mut self, place: &Place<'tcx>, context: PlaceContext, location: Location )
fn visit_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location )
fn super_place( &mut self, place: &Place<'tcx>, context: PlaceContext, location: Location )
fn super_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location )
fn super_projection_elem( &mut self, _place_ref: PlaceRef<'tcx>, elem: ProjectionElem<Local, Ty<'tcx>>, _context: PlaceContext, location: Location )
fn visit_constant(&mut self, constant: &ConstOperand<'tcx>, location: Location)
fn visit_ty_const(&mut self, ct: Const<'tcx>, location: Location)
fn visit_span(&mut self, span: Span)
fn visit_source_info(&mut self, source_info: &SourceInfo)
fn visit_ty(&mut self, ty: Ty<'tcx>, _: TyContext)
fn visit_user_type_projection(&mut self, ty: &UserTypeProjection)
fn visit_user_type_annotation( &mut self, index: UserTypeAnnotationIndex, ty: &CanonicalUserTypeAnnotation<'tcx> )
fn visit_region(&mut self, region: Region<'tcx>, _: Location)
fn visit_args(&mut self, args: &&'tcx List<GenericArg<'tcx>>, _: Location)
fn visit_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)
fn visit_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)
fn visit_local( &mut self, _local: Local, _context: PlaceContext, _location: Location )
fn visit_source_scope(&mut self, scope: SourceScope)
fn super_body(&mut self, body: &Body<'tcx>)
fn super_basic_block_data( &mut self, block: BasicBlock, data: &BasicBlockData<'tcx> )
fn super_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)
fn super_statement(&mut self, statement: &Statement<'tcx>, location: Location)
fn super_assign( &mut self, place: &Place<'tcx>, rvalue: &Rvalue<'tcx>, location: Location )
fn super_terminator( &mut self, terminator: &Terminator<'tcx>, location: Location )
fn super_assert_message( &mut self, msg: &AssertKind<Operand<'tcx>>, location: Location )
fn super_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)
fn super_operand(&mut self, operand: &Operand<'tcx>, location: Location)
fn super_ascribe_user_ty( &mut self, place: &Place<'tcx>, variance: Variance, user_ty: &UserTypeProjection, location: Location )
fn super_coverage(&mut self, _coverage: &Coverage, _location: Location)
fn super_retag( &mut self, _kind: RetagKind, place: &Place<'tcx>, location: Location )
fn super_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)
fn super_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)
fn super_source_scope(&mut self, _scope: SourceScope)
fn super_constant(&mut self, constant: &ConstOperand<'tcx>, location: Location)
fn super_ty_const(&mut self, _ct: Const<'tcx>, _location: Location)
fn super_span(&mut self, _span: Span)
fn super_source_info(&mut self, source_info: &SourceInfo)
fn super_user_type_projection(&mut self, _ty: &UserTypeProjection)
fn super_user_type_annotation( &mut self, _index: UserTypeAnnotationIndex, ty: &CanonicalUserTypeAnnotation<'tcx> )
fn super_ty(&mut self, _ty: Ty<'tcx>)
fn super_region(&mut self, _region: Region<'tcx>)
fn super_args(&mut self, _args: &&'tcx List<GenericArg<'tcx>>)
fn visit_location(&mut self, body: &Body<'tcx>, location: Location)
Auto Trait Implementations§
impl<'mir, 'tcx> !RefUnwindSafe for ConstPropagator<'mir, 'tcx>
impl<'mir, 'tcx> !Send for ConstPropagator<'mir, 'tcx>
impl<'mir, 'tcx> !Sync for ConstPropagator<'mir, 'tcx>
impl<'mir, 'tcx> Unpin for ConstPropagator<'mir, 'tcx>
impl<'mir, 'tcx> !UnwindSafe for ConstPropagator<'mir, 'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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: 336 bytes