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Re: [avr-gcc-list] More on optimization
From: |
Tvrtko A. Ursulin |
Subject: |
Re: [avr-gcc-list] More on optimization |
Date: |
Fri, 18 Oct 2002 09:36:53 +0200 |
On Thursday 17 October 2002 13:14, Joerg Wunsch wrote:
> "Tvrtko A. Ursulin" <address@hidden> wrote:
> > Nothing about -09 which I found was used in some Makefiles floating
> > around the net ?
>
> You can even write -O999 and it won't become more than -O3. ;-) Some
> people blindly believe by just writing something there, they'll indeed
> get better code as long as the compiler doesn't complain about it...
Well that is an usefull explanation!
> In terms of code size, i found that AVRs are usually best with just
> -O1 (perhaps plus some micro-optimization in -f or -m options). Even
> -Os is usually already larger.
Yep, I agree. My experiments lead to the same conclusion.
avr-gcc-list at http://avr1.org
- [avr-gcc-list] More on optimization, Tvrtko A. Ursulin, 2002/10/11
- RE: [avr-gcc-list] More on optimization, Dean Ferreyra, 2002/10/11
- Re: [avr-gcc-list] More on optimization, E. Weddington, 2002/10/11
- Re: [avr-gcc-list] More on optimization, Tvrtko A. Ursulin, 2002/10/11
- Re: [avr-gcc-list] More on optimization, Lorne Gutz, 2002/10/23
- Re: [avr-gcc-list] More on optimization, E. Weddington, 2002/10/23
- Re: [avr-gcc-list] More on optimization, Tvrtko A. Ursulin, 2002/10/23
- Re: [avr-gcc-list] More on optimization, Joerg Wunsch, 2002/10/23
- Re: [avr-gcc-list] More on optimization, E. Weddington, 2002/10/23
- Re: [avr-gcc-list] More on optimization, Joerg Wunsch, 2002/10/11
- Re: [avr-gcc-list] More on optimization, Theodore A. Roth, 2002/10/11