http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56294
--- Comment #10 from Martin Jambor <jamborm at gcc dot gnu.org> 2013-02-23 11:50:46 UTC --- Created attachment 29529 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29529 Another unrelated issue Irrespective of ho we decide to deal with the first issue, there is another problem that hinders bootstrap with IPA-SRA disabled of compilation of tree-ssa-loop-ivopts.c with -fno-ipa-sra and -fcompare-debug. I have reduced the issue with multidelta to the attached pre-processed form that fails with O2 -fno-ipa-sra -fcompare-debug and started failing with revision 195015: 2013-01-08 Martin Jambor <mjam...@suse.cz> PR debug/55579 * tree-sra.c (analyze_access_subtree): Return true also after potentially creating a debug-only replacement. As far I can see, dumps begin to diverge in the release_ssa early pass where, in the -g case, a control_var SSA names gets a version number 28 instead of 27 - that is also the problematic difference in the final dump. So far I have not figured out what is the one extra live SSA_NAME that lives in the debug case nor I have observed anything apparently wrong in the behavior of early SRA.
