pub struct MaybeLiveLocals;
Expand description

A live-variable dataflow analysis.

This analysis considers references as being used only at the point of the borrow. In other words, this analysis does not track uses because of references that already exist. See this mir-dataflow test for an example. You almost never want to use this analysis without also looking at the results of MaybeBorrowedLocals.

Field-(in)sensitivity

As the name suggests, this analysis is field insensitive. If a projection of a variable x is assigned to (e.g. x.0 = 42), it does not “define” x as far as liveness is concerned. In fact, such an assignment is currently marked as a “use” of x in an attempt to be maximally conservative.

Implementations

Trait Implementations

The type that holds the dataflow state at any given point in the program.

The direction of this analysis. Either Forward or Backward.

A descriptive name for this analysis. Used only for debugging. Read more

The initial value of the dataflow state upon entry to each basic block.

Mutates the initial value of the dataflow state upon entry to the START_BLOCK. Read more

See Analysis::apply_statement_effect.

See Analysis::apply_terminator_effect.

See Analysis::apply_call_return_effect.

See Analysis::apply_yield_resume_effect.

See Analysis::apply_before_statement_effect.

See Analysis::apply_before_terminator_effect.

See Analysis::apply_switch_int_edge_effects.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

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.

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