[Bug middle-end/46758] New: [4.5/4.6 Regression] -fgraphite-identity produces wrong code when using 64bit constants

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46758

           Summary: [4.5/4.6 Regression] -fgraphite-identity produces
                    wrong code when using 64bit constants
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
                CC: spop@gcc.gnu.org
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22597
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22597
reduced testcase (from gcc.c-torture/execute/20100416-1.c)

Output:
$ gcc -O -fgraphite-identity pr46758.c
$ ./a.out 
Aborted

Tested revisions:
r167331 - fail
r153685 - fail
4.5 r166509 - fail
4.4 r166509 - OK