381e9d2386
Frontends emit 'unused' coverage mapping records for functions which are
provably unused in a TU. These unused records contain a single counter
with CounterKind::Zero. However, a function may be unused in one TU and
used in another. When this happens, prefer the records with a full set
of counters instead of arbitrarily picking the first loaded record.
There is no impact on the single-TU case. In the multiple-TU case, this
resolves issues causing a function to appear unused when it's not.
Testing: check-{llvm,clang,compiler-rt}
rdar://42981322
llvm-svn: 339194
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| .. | ||
| Coverage | ||
| CMakeLists.txt | ||
| GCOV.cpp | ||
| InstrProf.cpp | ||
| InstrProfReader.cpp | ||
| InstrProfWriter.cpp | ||
| LLVMBuild.txt | ||
| ProfileSummaryBuilder.cpp | ||
| SampleProf.cpp | ||
| SampleProfReader.cpp | ||
| SampleProfWriter.cpp | ||