[Bug tree-optimization/61929] [Graphite]: Banerjee and Omega differ on distance vectors (internal compiler error in compute_affine_dependence)

["gcc at crg4 dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61929

--- Comment #8 from Charles Greathouse <gcc at crg4 dot com> ---
Full trace for last:

isl_constraint.c:625: expecting integer value
testcase.c: In function âgenerateICEâ:
testcase.c:8:6: internal compiler error: Aborted
 void generateICE(void) {
      ^
0x9957bf crash_signal
        ../../gcc-5.1.0-source/gcc/toplev.c:383
0xf0c081 build_linearized_memory_access
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:128
0xf0c081 pdr_stride_in_loop
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:214
0xf0c081 memory_strides_in_loop_1
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:300
0xf10f2a lst_interchange_profitable_p
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:417
0xf10f2a lst_try_interchange_loops
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:554
0xf10f2a lst_interchange_select_inner
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:617
0xf13b10 lst_interchange_select_outer
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:643
0xf13b5d lst_interchange_select_outer
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:653
0xf13bab scop_do_interchange(scop*)
        ../../gcc-5.1.0-source/gcc/graphite-interchange.c:665
0xe71eaa apply_poly_transforms(scop*)
        ../../gcc-5.1.0-source/gcc/graphite-poly.c:279
0xe6db18 graphite_transform_loops()
        ../../gcc-5.1.0-source/gcc/graphite.c:309
0xe6df90 graphite_transforms
        ../../gcc-5.1.0-source/gcc/graphite.c:338
0xe6df90 execute
        ../../gcc-5.1.0-source/gcc/graphite.c:419