bjoernager/rust
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coverage: CoverageIdsInfo::mcdc_bitmap_bytes is never needed

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This code for recalculating `mcdc_bitmap_bytes` doesn't provide any benefit,
because its result won't have changed from the value in `FunctionCoverageInfo`
that was computed during the MIR instrumentation pass.
This commit is contained in:
Zalathar 2024-04-30 23:36:08 +10:00
parent fba5f44bd8
commit bfadc3a9b9
3 changed files with 2 additions and 21 deletions
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12
compiler/rustc_mir_transform/src/coverage/query.rs
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@ -61,17 +61,7 @@ fn coverage_ids_info<'tcx>(
.max()
.unwrap_or(CounterId::ZERO);
let mcdc_bitmap_bytes = mir_body
.coverage_branch_info
.as_deref()
.map(|info| {
info.mcdc_decision_spans
.iter()
.fold(0, |acc, decision| acc + (1_u32 << decision.conditions_num).div_ceil(8))
})
.unwrap_or_default();
CoverageIdsInfo { max_counter_id, mcdc_bitmap_bytes }
CoverageIdsInfo { max_counter_id }
}
fn all_coverage_in_mir_body<'a, 'tcx>(