in lib/BPFCov.cpp [773:779]
static RegisterStandardPasses RegisterBPFCov(
PassManagerBuilder::EP_EarlyAsPossible,
[](const PassManagerBuilder &, legacy::PassManagerBase &PM)
{
errs() << "legacy: strip-initializers-only: " << (StripInitializersOnly.getValue() ? "true" : "false") << "\n";
PM.add(new LegacyBPFCov());
});