[Bug tree-optimization/48642] New: ICE: in omega_add_zero_eq, at omega.h:259 with -O -fcheck-data-deps --param omega-max-eqs=0

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48642

           Summary: ICE: in omega_add_zero_eq, at omega.h:259 with -O
                    -fcheck-data-deps --param omega-max-eqs=0
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 24013
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24013
reduced testcase (the same as gcc.dg/tree-ssa/pr42327.c)

Probably related to PR48482 and PR48393.

Compiler output:
$ gcc -O -fcheck-data-deps --param omega-max-eqs=0 testcase.c 
testcase.c: In function 'foo':
testcase.c:1:6: internal compiler error: in omega_add_zero_eq, at omega.h:259
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