This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: What happens with gcc -O6 ?

From: Tim Prince <n8tm at aol dot com>
To: gcc-help at gcc dot gnu dot org
Date: Tue, 28 Jun 2011 14:54:58 -0400
Subject: Re: What happens with gcc -O6 ?
References: <4E0A17A1.9070209@onetel.net>
Reply-to: tprince at computer dot org

On 6/28/2011 2:04 PM, Dr. David Kirkby wrote:

I've got some code where the author has used the compiler option -O6.
What happens in a case like this? gcc does not issue any warnings, but
as far as I'm aware, such a level of optimisation is not supported. So
what would happen in a case like this? Would there be any optimiation,
the maximum possible, the default ...?

Easily checked (e.g. by comparing output for -S option). Probably taken as -O3. -- Tim Prince

Follow-Ups:
- Re: What happens with gcc -O6 ?
  - From: Ian Lance Taylor

References:
- What happens with gcc -O6 ?
  - From: Dr. David Kirkby

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]