t/perf/opcount.t See if optimised subs have the right op counts
t/perf/optree.t Test presence of some op optimisations
t/perf/speed.t See if optimisations are keeping things fast
+t/perf/taint.t See if optimisations are keeping things fast (taint issues)
t/perl.supp Perl valgrind suppressions
t/porting/args_assert.t Check that all PERL_ARGS_ASSERT* macros are used
t/porting/authors.t Check that all authors have been acknowledged