[Bug tree-optimization/53571] New: [4.6/4.7/4.8 regression] ICE with -O{2,3} -floop-parallelize-all in cloog_domain_stride()

[xarthisius.kk at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53571

             Bug #: 53571
           Summary: [4.6/4.7/4.8 regression] ICE with -O{2,3}
                    -floop-parallelize-all in cloog_domain_stride()
    Classification: Unclassified
           Product: gcc
           Version: 4.6.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: xarthisius.kk@gmail.com


Created attachment 27552
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27552
reduced testcase

0x00007ffff7bcc1d5 in cloog_domain_stride () from /usr/lib64/libcloog.so.0
(gdb) bt
#0  0x00007ffff7bcc1d5 in cloog_domain_stride () from /usr/lib64/libcloog.so.0
#1  0x00007ffff7bc1ecf in ?? () from /usr/lib64/libcloog.so.0
#2  0x00007ffff7bc171b in cloog_loop_generate () from /usr/lib64/libcloog.so.0
#3  0x00007ffff7bd2f69 in cloog_program_generate () from
/usr/lib64/libcloog.so.0
#4  0x0000000000d593ec in scop_to_clast ()
#5  0x0000000000d5961e in gloog ()
#6  0x0000000000d55763 in graphite_transform_loops ()
#7  0x000000000091a269 in graphite_transforms ()
#8  0x0000000000759059 in execute_one_pass ()
#9  0x0000000000759233 in execute_pass_list ()
#10 0x0000000000759254 in execute_pass_list ()
#11 0x0000000000759254 in execute_pass_list ()
#12 0x0000000000759254 in execute_pass_list ()
#13 0x000000000088eae1 in tree_rest_of_compilation ()
#14 0x0000000000a49d0b in cgraph_expand_function ()
#15 0x0000000000a49eca in cgraph_expand_all_functions ()
#16 0x0000000000a4a533 in cgraph_optimize ()
#17 0x0000000000a48b22 in cgraph_finalize_compilation_unit ()
#18 0x000000000049de30 in c_write_global_declarations ()
#19 0x000000000083006e in compile_file ()
#20 0x0000000000832000 in do_compile ()
#21 0x0000000000832146 in toplev_main ()
#22 0x0000000000521118 in main ()

Downstream bug: https://bugs.gentoo.org/show_bug.cgi?id=361953