https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63622
--- Comment #26 from Iain Sandoe <iains at gcc dot gnu.org> --- OK - so two more data points. ( i) With the alias patch, I can bootstrap x86_64-darwin12 However, there are lots of new fails in Ada (for example) that go away when I force ipa-icf off. (ii) The patch is NOT sufficient to restore bootstrap on powerpc-darwin9 (accepting that few people care about that platform). ----- So what this tells us is that the alias patch is necessary, but not sufficient to fix all the issues. My latest round of testing was carried out on 217269 - it takes time to spin the permutations - if there's new stuff in since then - then I should try it.