[Bug tree-optimization/84515] missed optimization: expected loop merging

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84515

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
count==1 might be the difficult case, since it's the only situation in which
the second loop does something but the first loop doesn't.  But the code for:

void f2(unsigned count) {
    unsigned i;
    if (count <= 1) {
      g += count;
    } else {
      for (i = 0; i < count/2; i++) g++;
      for (     ; i < count  ; i++) g++;
    }
}

is also poor.