[Bug sanitizer/65148] New: ICE: in get_biv_step, at loop-iv.c:823

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65148

            Bug ID: 65148
           Summary: ICE:  in get_biv_step, at loop-iv.c:823
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
            Target: powerpc64-unknown-linux-gnu

On ppc64 and ppc64le I get with gcc-4.9.2:

trippels@gcc2-power8 ~ % cat foo.ii
int a;
void
fn1 ()
{
  while (a--)
    ;
}

trippels@gcc2-power8 ~ % g++ -fsanitize=undefined -O2 -c foo.ii
foo.ii: In function ‘void fn1()’:
foo.ii:7:1: internal compiler error: in get_biv_step, at loop-iv.c:823
 }
 ^
Please submit a full bug report,

gcc-5 is fine.