This is the mail archive of the
mailing list for the GCC project.
Re: LTO question
On 4/28/10 10:26 , Manuel López-Ibáñez wrote:
>>>> Not yet, I mistakenly thought -fwhole-program is the same as -fwhopr
>>>> and it is just for solving scaling issue of large program.(These two
>>>> options do look similar :-). I shall try next.
>>> Yep, -fwhopr is not ideal name, but I guess there is not much
>>> to do about it.
> It is marked as experimental, so if it is going to stay for GCC 4.6,
> then we should change the name. I think one possibility discussed
> somewhere is that LTO scales back automatically, so the option would
> be not necessary.
Yes. I think we should just keep -flto and make it use split
compilation if needed. -fwhopr is only needed to explicitly enable it.
My suggestion is to just keep -flto and invoke whopr with -flto=split
or -flto=big (until the automatic threshold is added).