On Thu, Feb 7, 2013 at 11:09 AM, Richard Biener <richard.guent...@gmail.com> wrote:
> Also note that for SPEC -funroll-loops helps GCC (yes ... we don't > enable that by default at -O3, we probably should). Richi, Are you suggesting enabling -funroll-loops by default at -O3? When I checked earlier this year, GCC was too aggressive with loop unrolling on non-numerically-intensive code and that option was not uniformly beneficial, unfortunately. It would be a good change if GCC's unrolling heuristics were better. Thanks, David
