Struct rustc_middle::mir::BasicBlockData

pub struct BasicBlockData<'tcx> {
    pub statements: Vec<Statement<'tcx>>,
    pub terminator: Option<Terminator<'tcx>>,
    pub is_cleanup: bool,
}

Data for a basic block, including a list of its statements.

See BasicBlock for documentation on what basic blocks are at a high level.

Fields

statements: Vec<Statement<'tcx>>

List of statements in this block.

terminator: Option<Terminator<'tcx>>

Terminator for this block.

N.B., this should generally ONLY be None during construction. Therefore, you should generally access it via the terminator() or terminator_mut() methods. The only exception is that certain passes, such as simplify_cfg, swap out the terminator temporarily with None while they continue to recurse over the set of basic blocks.

is_cleanup: bool

If true, this block lies on an unwind path. This is used during codegen where distinct kinds of basic blocks may be generated (particularly for MSVC cleanup). Unwind blocks must only branch to other unwind blocks.

Implementations

impl<'tcx> BasicBlockData<'tcx>

pub fn new(terminator: Option<Terminator<'tcx>>) -> BasicBlockData<'tcx>

pub fn terminator(&self) -> &Terminator<'tcx>

Accessor for terminator.

Terminator may not be None after construction of the basic block is complete. This accessor provides a convenient way to reach the terminator.

pub fn terminator_mut(&mut self) -> &mut Terminator<'tcx>

pub fn retain_statements<F>(&mut self, f: F)where
    F: FnMut(&mut Statement<'_>) -> bool,

pub fn expand_statements<F, I>(&mut self, f: F)where
    F: FnMut(&mut Statement<'tcx>) -> Option<I>,
    I: TrustedLen<Item = Statement<'tcx>>,

pub fn visitable(&self, index: usize) -> &dyn MirVisitable<'tcx>

pub fn is_empty_unreachable(&self) -> bool

Does the block have no statements and an unreachable terminator?

Trait Implementations

impl<'tcx> Clone for BasicBlockData<'tcx>

fn clone(&self) -> BasicBlockData<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for BasicBlockData<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for BasicBlockData<'tcx>

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for BasicBlockData<'tcx>

fn encode(&self, __encoder: &mut __E)

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for BasicBlockData<'tcx>

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)

impl<'tcx> TypeFoldable<'tcx> for BasicBlockData<'tcx>

fn try_fold_with<__F: FallibleTypeFolder<'tcx>>(
    self,
    __folder: &mut __F
) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<'tcx> for BasicBlockData<'tcx>

fn visit_with<__V: TypeVisitor<'tcx>>(
    &self,
    __visitor: &mut __V
) -> ControlFlow<__V::BreakTy>

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this type has any regions that escape binder (and hence are not bound by it).

fn has_escaping_bound_vars(&self) -> bool

Return true if this type has regions that are not a part of the type. For example, for<'a> fn(&'a i32) return false, while fn(&'a i32) would return true. The latter can occur when traversing through the former.

fn has_type_flags(&self, flags: TypeFlags) -> bool

fn has_projections(&self) -> bool

fn has_opaque_types(&self) -> bool

fn references_error(&self) -> bool

fn error_reported(&self) -> Result<(), ErrorGuaranteed>

fn has_non_region_param(&self) -> bool

fn has_infer_regions(&self) -> bool

fn has_infer_types(&self) -> bool

fn has_non_region_infer(&self) -> bool

fn needs_infer(&self) -> bool

fn has_placeholders(&self) -> bool

fn needs_subst(&self) -> bool

fn has_free_regions(&self) -> bool

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erased_regions(&self) -> bool

fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.

fn is_global(&self) -> bool

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

True if there are any late-bound regions

fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.

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: 144 bytes