https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63347
--- Comment #4 from Jonathan Larmour <jifl-bugzilla at jifvik dot org> --- I have just double-checked, and my gcc 4.8.3 definitely doesn't generate the 'tstl', but it looks like you're bang on right about how gcc was configured: I configured it with --with-arch=cf. Sorry I should have realised the importance of this before and included it! So I think you should be able to reproduce it if you add -mcpu=5206 (or any other coldfire cpu) to the compile line.
