bjoernager/rust
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coverage: Let each coverage statement hold a vector of code regions

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This makes it possible for a `StatementKind::Coverage` to hold more than one
code region, but that capability is not yet used.
This commit is contained in:
Zalathar 2023-08-27 17:11:13 +10:00
parent 1355e1fc74
commit ee9d00f6b8
9 changed files with 96 additions and 90 deletions
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10
compiler/rustc_mir_transform/src/simplify.rs
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@ -441,21 +441,23 @@ fn save_unreachable_coverage(
let dead_block = &basic_blocks[dead_block];
for statement in &dead_block.statements {
let StatementKind::Coverage(coverage) = &statement.kind else { continue };
let Some(code_region) = &coverage.code_region else { continue };
if coverage.code_regions.is_empty() {
continue;
};
let instance = statement.source_info.scope.inlined_instance(source_scopes);
if live.contains(&instance) {
retained_coverage.push((statement.source_info, code_region.clone()));
retained_coverage.push((statement.source_info, coverage.code_regions.clone()));
}
}
}
let start_block = &mut basic_blocks[START_BLOCK];
start_block.statements.extend(retained_coverage.into_iter().map(
|(source_info, code_region)| Statement {
|(source_info, code_regions)| Statement {
source_info,
kind: StatementKind::Coverage(Box::new(Coverage {
kind: CoverageKind::Unreachable,
code_region: Some(code_region),
code_regions,
})),
},
));