Re: -benchmark-mode

On 12/16/05, Daishi Kato <daishi@xxxxxxxxxxx> wrote:
> Felix, thanks a lot!
>
> What then questions me is the difference
> among -O1, -O2 and -O3.
>

-optimize-level 0
  does nothing.
-optimize-level 1 and -optimize-level 2
 are equivalent to -optimize-leaf-routines (that wasn't always the case,
 some optimizations were enabled by default later)
-optimize-level 3} is equivalent to
  -optimize-leaf-routines -unsafe


cheers,
felix