[Bug tree-optimization/79803] [5/6/7 Regression] ICE in tree_ssa_prefetch_arrays, at tree-ssa-loop-prefetch.c:1982

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79803

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-03-02
   Target Milestone|---                         |5.5
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Some of its computation assumes this.  I'd simply do this as a runtime check
and skip the pass (in ::execute).  Eventually warn about this with
OPT_Wdisabled_optimization