https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56145

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |5.0
            Summary|[4.8/4.9/5 Regression] Use  |[4.8/4.9 Regression] Use of
                   |of too much optimizations   |too much optimizations -O2
                   |-O2 -ffast-math             |-ffast-math
                   |-floop-parallelize-all      |-floop-parallelize-all

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yes.  I think this has been fixed on trunk but not the branches with

2014-06-29  Roman Gareev  <gareevro...@gmail.com>

        * graphite-dependences.c (subtract_commutative_associative_deps):
        Add NULL checking of the following variables: must_raw_no_source,
        may_raw_no_source, must_war_no_source, may_war_no_source,
        must_waw_no_source, may_waw_no_source, must_raw, may_raw,
        must_war, may_war, must_waw, may_waw.

that change should probably be backported to the 4.9 and 4.8 branches.

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