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References: <bug-25553-6528@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/25553] Missed removal of load
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------- Comment #8 from pinskia at gcc dot gnu dot org  2008-04-07 01:44 -------
This turns out to be PRE for global decl issue as the following is done
correctly (at least on the trunk):
int g(int);
int f(int tt, int *t)
{
  if (tt)
    *t = 2;
  else
    *t = 3;
  return g(*t);
}
--- CUT ---
f (tt, t)
{
  int prephitmp.9;
  int D.1182;

<bb 2>:
  if (tt != 0)
    goto <bb 3>;
  else
    goto <bb 4>;

<bb 3>:
  *t = 2;
  prephitmp.9 = 2;
  goto <bb 5>;

<bb 4>:
  *t = 3;
  prephitmp.9 = 3;

<bb 5>:
  D.1182 = g (prephitmp.9) [tail call];
  return D.1182;

}


*** This bug has been marked as a duplicate of 23455 ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25553