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Re: Apple's -fast option for gcc
- From: Mike Stump <mrs at apple dot com>
- To: Martin Brain <mjb at cs dot bath dot ac dot uk>
- Cc: Russ Allbery <rra at stanford dot edu>, gcc at gcc dot gnu dot org
- Date: Wed, 17 Sep 2003 11:08:06 -0700
- Subject: Re: Apple's -fast option for gcc
On Wednesday, September 17, 2003, at 10:56 AM, Martin Brain wrote:
As I understand it the number of levels refers to the scope the
optimisations work in.
You're the first person I've met that's said that... Either, you know
the people that first used -O2 and knew what they were thinking...
or... Anyway, I doubt this reflect how gcc developers think, or how
users think of the options.
-O0 can debug it, -O1 fast, -O2 good, -Os small, -O3 big, maybe faster.