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Explicit notation.

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Camille GILLOT 2023-10-18 16:41:10 +00:00
parent 6abd8f119e
commit d5b21ef96b
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4
compiler/rustc_mir_transform/src/jump_threading.rs
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@ -17,6 +17,10 @@
//! if assigning anything different from `value` to `place` turns the `SwitchInt` //! if assigning anything different from `value` to `place` turns the `SwitchInt`
//! into `Goto { target }`. //! into `Goto { target }`.
//! //!
//! In this file, we denote as `place ?= value` the existence of a replacement condition
//! on `place` with given `value`, irrespective of the polarity and target of that
//! replacement condition.
//!
//! We then walk the CFG backwards transforming the set of conditions. //! We then walk the CFG backwards transforming the set of conditions.
//! When we find a fulfilling assignment, we record a `ThreadingOpportunity`. //! When we find a fulfilling assignment, we record a `ThreadingOpportunity`.
//! All `ThreadingOpportunity`s are applied to the body, by duplicating blocks if required. //! All `ThreadingOpportunity`s are applied to the body, by duplicating blocks if required.