[Bug tree-optimization/24609] [4.0/4.1/4.2 regression] Same value duplicated in two different registers

[rguenth at gcc dot gnu dot org]

------- Comment #12 from rguenth at gcc dot gnu dot org  2006-07-10 13:00 
-------
This seems to worked around on the mainline and also fails for 4.0.3.

Basically, on the mainline you can still see the behavior if using
-fno-if-conversion.

Short testcase:

int
foo (int *a, char * p)
{
  int d;

  if (p)
    d = 1;
  else
    d = 2;
  a[0] = d;

  return p[d - 1];
}


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|                            |4.0.3 4.1.0 4.1.1 4.2.0
      Known to work|                            |3.4.6
   Last reconfirmed|0000-00-00 00:00:00         |2006-07-10 13:00:56
               date|                            |
            Summary|[4.1/4.2 regression] Same   |[4.0/4.1/4.2 regression]
                   |value duplicated in two     |Same value duplicated in two
                   |different registers         |different registers


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24609