On Tue, Sep 4, 2012 at 11:12 AM, Christer Solskogen <christer.solskogen@xxxxxxxxx> wrote: > Does it, and if yes, has much impact on GCC if GCC itself was compiled with > CFLAGS="-march=i7" (or any other kind of cpu, for that matter)? > And if it does have any impact, what is a good measurement? I imagine it would have some impact, though probably not much. A fairly common way to measure impact is to measure total bootstrap time. Although there is a lot of I/O in a GCC bootstrap, it tends to be dominated by CPU time. Ian
