This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/59429] Missed optimization opportunity in qsort-style comparison functions
- From: "ktietz at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 02 May 2014 16:03:45 +0000
- Subject: [Bug rtl-optimization/59429] Missed optimization opportunity in qsort-style comparison functions
- Auto-submitted: auto-generated
- References: <bug-59429-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59429
--- Comment #7 from Kai Tietz <ktietz at gcc dot gnu.org> ---
Yeah, that was my initial idea here too. But this transformation is just an
improvement for underlying unsigned one-bit values, as here the negate is
indeed an nop.