Re: Why not 03 ?
On Mon, 02 Jun 2014, Thomas Goirand wrote:
> On 06/02/2014 05:07 AM, Julien Cristau wrote:
> > For a lot of scientific packages, the upstream authors don't know what
> > they're doing. So I'm not sure that's much of an argument.
> 
> Also, it's easy to just play with the -O option and see what's faster.
As long as you have a way to regression-test. And I don't mean performance
regressions, either. Although issues with -O3 are rare, they're not unheard
of. And all bets are off when the C code has undefined behavior.
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot