bjoernager/rust
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coverage: Rename mir::coverage::BranchInfo to CoverageInfoHi

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This opens the door to collecting and storing coverage information that is
unrelated to branch coverage or MC/DC.
This commit is contained in:
Zalathar 2024-07-04 23:52:49 +10:00
parent 489233170a
commit f095de4bf1
9 changed files with 110 additions and 85 deletions
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11
compiler/rustc_middle/src/mir/coverage.rs
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@ -103,7 +103,7 @@ pub enum CoverageKind {
SpanMarker,
/// Marks its enclosing basic block with an ID that can be referred to by
/// side data in [`BranchInfo`].
/// side data in [`CoverageInfoHi`].
///
/// Should be erased before codegen (at some point after `InstrumentCoverage`).
BlockMarker { id: BlockMarkerId },
@ -274,10 +274,15 @@ pub struct FunctionCoverageInfo {
pub mcdc_num_condition_bitmaps: usize,
}
/// Branch information recorded during THIR-to-MIR lowering, and stored in MIR.
/// Coverage information for a function, recorded during MIR building and
/// attached to the corresponding `mir::Body`. Used by the `InstrumentCoverage`
/// MIR pass.
///
/// ("Hi" indicates that this is "high-level" information collected at the
/// THIR/MIR boundary, before the MIR-based coverage instrumentation pass.)
#[derive(Clone, Debug)]
#[derive(TyEncodable, TyDecodable, Hash, HashStable, TypeFoldable, TypeVisitable)]
pub struct BranchInfo {
pub struct CoverageInfoHi {
/// 1 more than the highest-numbered [`CoverageKind::BlockMarker`] that was
/// injected into the MIR body. This makes it possible to allocate per-ID
/// data structures without having to scan the entire body first.