Re: Compiling 2.2.19 with -O3 flag

[Christoph Hellwig]

On Fri, May 24, 2002 at 10:55:20AM -0700, Robert Love wrote:
> I know this...maybe I am not being clear.  I realize -Os is a derivate
> of -O2, but is it not an interesting note if -Os can be as fast (or
> faster) than -O2 and still generate smaller binaries?  That is my point.

I've seen it beeing faster with gcc 2.95.  Alan's point was (and I think
the explanation is plausible) is that it is faster exactly _because_ it
produces smaller code due to the instruction cache behaviour of many
current CPUs.