pub struct BasicBlocks<'tcx> {
basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>,
cache: Cache,
}
Fields§
§basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>
§cache: Cache
Implementations§
Source§impl<'tcx> BasicBlocks<'tcx>
impl<'tcx> BasicBlocks<'tcx>
pub fn new(basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>) -> Self
pub fn dominators(&self) -> &Dominators<BasicBlock>
Sourcepub fn predecessors(&self) -> &IndexVec<BasicBlock, SmallVec<[BasicBlock; 4]>>
pub fn predecessors(&self) -> &IndexVec<BasicBlock, SmallVec<[BasicBlock; 4]>>
Returns predecessors for each basic block.
Sourcepub fn reverse_postorder(&self) -> &[BasicBlock]
pub fn reverse_postorder(&self) -> &[BasicBlock]
Returns basic blocks in a reverse postorder.
See traversal::reverse_postorder
’s docs to learn what is preorder traversal.
Sourcepub fn switch_sources(
&self,
) -> &FxHashMap<(BasicBlock, BasicBlock), SmallVec<[Option<u128>; 1]>>
pub fn switch_sources( &self, ) -> &FxHashMap<(BasicBlock, BasicBlock), SmallVec<[Option<u128>; 1]>>
switch_sources()[&(target, switch)]
returns a list of switch
values that lead to a target
block from a switch
block.
Sourcepub fn as_mut(&mut self) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>
pub fn as_mut(&mut self) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>
Returns mutable reference to basic blocks. Invalidates CFG cache.
Sourcepub fn as_mut_preserves_cfg(
&mut self,
) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>
pub fn as_mut_preserves_cfg( &mut self, ) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>
Get mutable access to basic blocks without invalidating the CFG cache.
By calling this method instead of e.g. BasicBlocks::as_mut
you promise not to change
the CFG. This means that
- The number of basic blocks remains unchanged
- The set of successors of each terminator remains unchanged.
- For each
TerminatorKind::SwitchInt
, thetargets
remains the same and the terminator kind is not changed.
If any of these conditions cannot be upheld, you should call BasicBlocks::invalidate_cfg_cache
.
Sourcepub fn invalidate_cfg_cache(&mut self)
pub fn invalidate_cfg_cache(&mut self)
Invalidates cached information about the CFG.
You will only ever need this if you have also called BasicBlocks::as_mut_preserves_cfg
.
All other methods that allow you to mutate the basic blocks also call this method
themselves, thereby avoiding any risk of accidentally cache invalidation.
Methods from Deref<Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>>§
pub fn len(&self) -> usize
pub fn is_empty(&self) -> bool
Sourcepub fn next_index(&self) -> I
pub fn next_index(&self) -> I
Gives the next index that will be assigned when push
is called.
Manual bounds checks can be done using idx < slice.next_index()
(as opposed to idx.index() < slice.len()
).
pub fn iter(&self) -> Iter<'_, T>
pub fn iter_enumerated(&self) -> impl DoubleEndedIterator + ExactSizeIterator
pub fn indices( &self, ) -> impl DoubleEndedIterator + ExactSizeIterator + Clone + 'static
pub fn last_index(&self) -> Option<I>
pub fn get(&self, index: I) -> Option<&T>
pub fn binary_search(&self, value: &T) -> Result<I, I>where
T: Ord,
Sourcepub fn invert_bijective_mapping(&self) -> IndexVec<J, I>
pub fn invert_bijective_mapping(&self) -> IndexVec<J, I>
Invert a bijective mapping, i.e. invert(map)[y] = x
if map[x] = y
,
assuming the values in self
are a permutation of 0..self.len()
.
This is used to go between memory_index
(source field order to memory order)
and inverse_memory_index
(memory order to source field order).
See also FieldsShape::Arbitrary::memory_index
for more details.
Trait Implementations§
Source§impl<'tcx> Clone for BasicBlocks<'tcx>
impl<'tcx> Clone for BasicBlocks<'tcx>
Source§fn clone(&self) -> BasicBlocks<'tcx>
fn clone(&self) -> BasicBlocks<'tcx>
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl<'tcx> Debug for BasicBlocks<'tcx>
impl<'tcx> Debug for BasicBlocks<'tcx>
Source§impl<'tcx> Deref for BasicBlocks<'tcx>
impl<'tcx> Deref for BasicBlocks<'tcx>
Source§type Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>
type Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>
Source§fn deref(&self) -> &IndexSlice<BasicBlock, BasicBlockData<'tcx>>
fn deref(&self) -> &IndexSlice<BasicBlock, BasicBlockData<'tcx>>
Source§impl<'tcx> DirectedGraph for BasicBlocks<'tcx>
impl<'tcx> DirectedGraph for BasicBlocks<'tcx>
Source§impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for BasicBlocks<'tcx>
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for BasicBlocks<'tcx>
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )
Source§impl<'tcx> Predecessors for BasicBlocks<'tcx>
impl<'tcx> Predecessors for BasicBlocks<'tcx>
Source§impl<'tcx> StartNode for BasicBlocks<'tcx>
impl<'tcx> StartNode for BasicBlocks<'tcx>
fn start_node(&self) -> Self::Node
Source§impl<'tcx> Successors for BasicBlocks<'tcx>
impl<'tcx> Successors for BasicBlocks<'tcx>
Source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for BasicBlocks<'tcx>
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for BasicBlocks<'tcx>
Source§fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
__folder: &mut __F,
) -> Result<Self, __F::Error>
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for use with infallible
folders. Do not override this method, to ensure coherence with
try_fold_with
.Source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for BasicBlocks<'tcx>
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for BasicBlocks<'tcx>
Source§fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>(
&self,
__visitor: &mut __V,
) -> __V::Result
fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V, ) -> __V::Result
Auto Trait Implementations§
impl<'tcx> DynSend for BasicBlocks<'tcx>
impl<'tcx> DynSync for BasicBlocks<'tcx>
impl<'tcx> !Freeze for BasicBlocks<'tcx>
impl<'tcx> !RefUnwindSafe for BasicBlocks<'tcx>
impl<'tcx> Send for BasicBlocks<'tcx>
impl<'tcx> Sync for BasicBlocks<'tcx>
impl<'tcx> Unpin for BasicBlocks<'tcx>
impl<'tcx> !UnwindSafe for BasicBlocks<'tcx>
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