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Clarify how branching works in a CFG

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Camelid 2020-09-14 20:10:29 -07:00
parent fd79ed4225
commit a872ec4714
1 changed files with 5 additions and 3 deletions
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8
compiler/rustc_middle/src/mir/mod.rs
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@ -1079,9 +1079,11 @@ rustc_index::newtype_index! {
/// The unit of the MIR [control-flow graph][CFG].
///
/// There is no branching (e.g., `if`s, function calls, etc.) within a basic block, which makes
/// it easier to do [data-flow analyses] and optimizations. Basic blocks consist of a series of
/// [statements][`Statement`], ending with a [terminator][`Terminator`]. Basic blocks can have
/// multiple predecessors and successors.
/// it easier to do [data-flow analyses] and optimizations. Instead, branches are represented
/// as an edge in a graph between basic blocks.
///
/// Basic blocks consist of a series of [statements][`Statement`], ending with a
/// [terminator][`Terminator`]. Basic blocks can have multiple predecessors and successors.
///
/// Read more about basic blocks in the [rustc-dev-guide][guide-mir].
///