[Bug tree-optimization/23094] store ccp, or store copy prop misses an optimization

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2008-03-18 15:31 -------
Similar case that SCCVN could also handle (store_ccp and DOM handle this):

int G;

void __attribute__((noinline))
foo (int i)
{
   if (i > 0)
     G = 3;
   else
     G = 3;

   if (G != 3)
     link_error ();
}

int
main ()
{
   foo (0);
   return 0;
}

(I have a patch for this as well, the above testcase is the same as
gcc.dg/tree-ssa/20040721-1.c)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23094