[Bug rtl-optimization/33257] guaranteed-true test not optimized away when input values later used

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2007-08-31 09:29 -------
We don't optimize the following at the tree level either but only combine get's
this.

void foo_u_3_noprint (unsigned x) {
    unsigned q = x / 3, r = x % 3;
    if (q * 3 + r != x) abort();
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33257