The test results for B::Bytecode, the bytecode compiler backend for perlcc, show a that most perl versions from 5.8 to 5.11 fail on the same tests: 7 9-12 with threads enabled. Without threads and 5.8 the results are much better.

The failing tests involve anonymous subs, split and index.
See http://cpantesters.perl.org/show/B-C.html#B-C-1.04_20
See also http://search.cpan.org/src/RURBAN/B-C-1.04_20/STATUS

If you could send me a tar of your files I could make better recommendations.

rurban - the perl compiler maintainer