http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52041
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-30 19:26:10 UTC --- The addition of # DEBUG lines in the dumps as well as some changes in D.NNNN numbers are expected and correct in between the dumps, but the SSA_NAME versions (_VV parts) as well as the stmt kinds, number of operands, number and order of basic blocks etc. should be the same.