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coverage: Store a copy of num_bcbs in ExtractedMappings

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This makes it possible to allocate per-BCB data structures without needing
access to the whole graph.
This commit is contained in:
Zalathar 2024-07-15 20:37:14 +10:00
parent 0da95bd869
commit 741ed01646
2 changed files with 10 additions and 7 deletions
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4
compiler/rustc_mir_transform/src/coverage/mod.rs
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@ -88,8 +88,7 @@ fn instrument_function_for_coverage<'tcx>(tcx: TyCtxt<'tcx>, mir_body: &mut mir:
// every coverage span has a `Counter` or `Expression` assigned to its `BasicCoverageBlock`
// and all `Expression` dependencies (operands) are also generated, for any other
// `BasicCoverageBlock`s not already associated with a coverage span.
let bcbs_with_counter_mappings =
extracted_mappings.all_bcbs_with_counter_mappings(&basic_coverage_blocks);
let bcbs_with_counter_mappings = extracted_mappings.all_bcbs_with_counter_mappings();
if bcbs_with_counter_mappings.is_empty() {
// No relevant spans were found in MIR, so skip instrumenting this function.
return;
@ -163,6 +162,7 @@ fn create_mappings<'tcx>(
// Fully destructure the mappings struct to make sure we don't miss any kinds.
let ExtractedMappings {
num_bcbs: _,
code_mappings,
branch_pairs,
mcdc_bitmap_bytes: _,