> > Do you have numbers for the effect of "-fno-strength-reduce"? Back when I
> > added it I couldn't see any difference at all to any benchmarks, so I've
> > had no real incentive to even try to remove it.
I might be dead wrong on this, but AFAIR the change in 2.7.2.3 was just to
remove support for -fstrength-reduce from the compiler; or at least remove
it from all loops.
> > Does anybody have any numbers that show that it actually matters for the
> > kernel (I know it matters a lot for some other things, but I'm looking for
> > something that really makes a difference in kernel-land)?
> Just tested the effect of -fno-strength-reduce on the standard Linux
> benchmark, compiling the kernel, measuring with time:)
> [No noticeable change]
Have you tried newer compilers, e.g. latest egcs snapshot?
Just idle curiosity...
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