http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52391
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-27 23:16:09 UTC --- Yeah, before that the huge conditions wouldn't be optimized, because the SYMBOL_REFs in them wouldn't rtx_equal_p even when they had the same strings. The question is if the test optimization can be improved, but in any case this doesn't look like a very important regression, it is much more important how fast is the insn-attrtab.c code than how long it takes to generate it. The former is used for all compilations, the latter only once (or 3 times for bootstrap) during gcc build.
