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Re: [RFC] Enabling loop unrolls at -O3?
- From: Steven Bosscher <stevenb at suse dot de>
- To: gcc at gcc dot gnu dot org
- Cc: "Giovanni Bajo" <rasky at develer dot com>
- Date: Sat, 5 Nov 2005 19:02:53 +0100
- Subject: Re: [RFC] Enabling loop unrolls at -O3?
- References: <08f201c5e231$f06ac090$bf03030a@trilan>
On Saturday 05 November 2005 18:54, Giovanni Bajo wrote:
> Hello,
>
> any specific reason why we still don't unroll loops by default at -O3? It
> looks like it gives better results on most benchmark, and many people use
> it always together with -O3 to say "really optimize, I mean it".
One reason why it's not enabled is because it causes a huge compile time
regression.
Gr.
Steven