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coverage: Tidy up creation of covfun records

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This commit is contained in:
Zalathar 2024-12-12 20:28:10 +11:00
parent de53fe245d
commit 5f5745beb0
2 changed files with 33 additions and 31 deletions
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7
compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs
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@ -75,7 +75,10 @@ pub(crate) fn finalize(cx: &CodegenCx<'_, '_>) {
// Encode all filenames referenced by coverage mappings in this CGU.
let filenames_buffer = global_file_table.make_filenames_buffer(tcx);
let filenames_ref = llvm_cov::hash_bytes(&filenames_buffer);
// The `llvm-cov` tool uses this hash to associate each covfun record with
// its corresponding filenames table, since the final binary will typically
// contain multiple covmap records from different compilation units.
let filenames_hash = llvm_cov::hash_bytes(&filenames_buffer);
let mut unused_function_names = Vec::new();
@ -98,7 +101,7 @@ pub(crate) fn finalize(cx: &CodegenCx<'_, '_>) {
for covfun in &covfun_records {
unused_function_names.extend(covfun.mangled_function_name_if_unused());
covfun::generate_covfun_record(cx, filenames_ref, covfun)
covfun::generate_covfun_record(cx, filenames_hash, covfun)
}
// For unused functions, we need to take their mangled names and store them