On Mon, 23 Apr 2007, Mark Mitchell wrote: > > I'm certainly not trying to suggest that we run SPEC on every > > architecture, and then make -O2 be the set of optimization options that > > happens to do best there, however bizarre.
On Mon, Apr 23, 2007 at 01:21:20PM -0400, Kaveh R. GHAZI wrote: > Why not? Is your objection because SPEC doesn't reflect real-world apps > or because the option set might be "bizarre"? In this case "bizarre" would mean "untested": if we find some set of 15 options that maximizes SPEC performance, it's quite likely that no one has used that option combination before; building complete distros with this untested option set would almost certainly find bugs. Still might be worth trying, but would require extra and careful testing.