Struct rustc_mir_dataflow::points::DenseLocationMap

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pub struct DenseLocationMap {
    statements_before_block: IndexVec<BasicBlock, usize>,
    basic_blocks: IndexVec<PointIndex, BasicBlock>,
    num_points: usize,
}
Expand description

Maps between a Location and a PointIndex (and vice versa).

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§statements_before_block: IndexVec<BasicBlock, usize>

For each basic block, how many points are contained within?

§basic_blocks: IndexVec<PointIndex, BasicBlock>

Map backward from each point to the basic block that it belongs to.

§num_points: usize

Implementations§

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impl DenseLocationMap

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pub fn new(body: &Body<'_>) -> Self

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pub fn num_points(&self) -> usize

Total number of point indices

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pub fn point_from_location(&self, location: Location) -> PointIndex

Converts a Location into a PointIndex. O(1).

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pub fn entry_point(&self, block: BasicBlock) -> PointIndex

Returns the PointIndex for the first statement in the given BasicBlock. O(1).

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pub fn to_block_start(&self, index: PointIndex) -> PointIndex

Return the PointIndex for the block start of this index.

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pub fn to_location(&self, index: PointIndex) -> Location

Converts a PointIndex back to a location. O(1).

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pub fn point_in_range(&self, index: PointIndex) -> bool

Sometimes we get point-indices back from bitsets that may be out of range (because they round up to the nearest 2^N number of bits). Use this function to filter such points out if you like.

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Size: 56 bytes