…ics.

LLVM has a neat [statistics] feature that tracks how often optimizations kick
in. It's very handy for optimization work. Since we expose the LLVM pass
timings, I thought it made sense to expose the LLVM statistics too.

[statistics]: https://llvm.org/docs/ProgrammersManual.html#the-statistic-class-stats-option

…rust/pull/113723/files

use slice memcpy rather than strcpy and write it on stdout

use println on failure

Co-authored-by: Oli Scherer <github35764891676564198441@oli-obk.de>