http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52285
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-16 18:50:27 UTC --- Created attachment 26681 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26681 gcc47-pr52285.patch Patch to ignore clobber stmts in tailc/tailr passes. This turns this testcase back into a loop, for which the bad IVOPT decision matters.