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[Bug rtl-optimization/33257] guaranteed-true test not optimized away when input values later used
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Aug 2007 09:29:42 -0000
- Subject: [Bug rtl-optimization/33257] guaranteed-true test not optimized away when input values later used
- References: <bug-33257-11337@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla 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();
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33257