[Bug middle-end/38856] loop iv detection failure

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2009-01-16 18:53 -------
Here is a testcase where IV can be found but we end up with two copies of the
same register in the loop:
int f(unsigned long s, unsigned long *c)
{
  long j;
  for(j = 0;j < s; j++)
    {
      c[j]=j;
    }
}

Which is basically the same issue.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38856