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[Bug c/46186] Clang creates code running 1600 times faster than gcc's
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 26 Oct 2010 15:29:02 +0000
- Subject: [Bug c/46186] Clang creates code running 1600 times faster than gcc's
- Auto-submitted: auto-generated
- References: <bug-46186-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46186
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> 2010-10-26 15:28:51 UTC ---
(In reply to comment #8)
>
> Since the optimization seems to be mostly there in -O3, it's just a matter of
> enabling it in -O2.
Or if you want all optimisations, it's just a matter of using -O3
Expecting all optimisations to be done below the maximum optimisation level is
... unexpected.