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coverage: All counter terms in an unused function are zero

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This is currently handled automatically by the fact that codegen doesn't visit
coverage statements in unused functions, but that will no longer be the case
when unused IDs are identified by a separate query instead.
This commit is contained in:
Zalathar 2024-11-25 21:17:50 +11:00
parent 05d95a9841
commit 121a17ccc3
2 changed files with 3 additions and 4 deletions
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3
compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs
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@ -535,8 +535,7 @@ fn add_unused_function_coverage<'tcx>(
}),
);
// An unused function's mappings will automatically be rewritten to map to
// zero, because none of its counters/expressions are marked as seen.
// An unused function's mappings will all be rewritten to map to zero.
let function_coverage = FunctionCoverageCollector::unused(instance, function_coverage_info);
cx.coverage_cx().function_coverage_map.borrow_mut().insert(instance, function_coverage);