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[Bug target/11180] [avr-gcc] Optimization decrease performance of struct assignment.
- From: "eweddington at cso dot atmel dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Jul 2007 14:23:43 -0000
- Subject: [Bug target/11180] [avr-gcc] Optimization decrease performance of struct assignment.
- References: <bug-11180-6291@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #11 from eweddington at cso dot atmel dot com 2007-07-27 14:23 -------
Subject: RE: [avr-gcc] Optimization decrease performance of
struct assignment.
> ------- Comment #10 from dmixm at marine dot febras dot ru
> 2007-07-27 01:24 -------
> Yes, results are:
>
> avr-gcc-3.3.6: O0 --> 75, O1,O2,O3,Os --> 79
> avr-gcc-4.2.1: O0 --> 109, O1,O2,O3,Os --> 79
>
> The mistake is corrected? It is possible to tell and so as now
> application of keys of optimization shortens a code. However,
> "correction" does not improve quality of optimization, it only worsens
> not optimized code.
Agreed. But is this sufficient to close this bug report?
Eric
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11180