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Re: Optimisations

From: Phil Blundell <pb at nexus dot co dot uk>
To: Vermeulen Jan <Jan dot Vermeulen at siemens dot atea dot be>
Cc: "CrossGCC (E-mail)" <crossgcc at sources dot redhat dot com>
Date: 12 Feb 2002 15:38:22 +0000
Subject: Re: Optimisations
References: <E76F715C0429D5118F2100508BB9EDEE026136BD@hrtades7.atea.be>

On Tue, 2002-02-12 at 14:55, Vermeulen Jan wrote:
> When browsing through the GCC manual, I noticed that -Ox is only explained
> up to -O3.
> Recently I downloaded and installed mplayer, which compiled some files with
> -O9.
> 
> Does anybody know what those other levels of optimisations mean? (what they
> implement?)
> Or where they are documented?

Anything above -O3 behaves exactly the same as -O3 itself.  I think this
is in the manual actually.

p.


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References:
- Optimisations
  - From: Vermeulen Jan

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