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Re: Reorganizing -flto and -fwhopr command line options (Was Re: WHOPR partitioning, take 2)
On Sun, 17 Oct 2010, Dave Korn wrote:
> On 17/10/2010 17:37, Gerald Pfeifer wrote:
> > On Wed, 6 Oct 2010, Richard Guenther wrote:
> >> I'm really undecided on whether and what to do now to all the option
> >> mess (given it's pre-existent in GCC 4.5).
> >
> > Given the state (and presumably not so widespread use) of LTO with
> > GCC 4.5 I would not worry about compatibility from 4.5 to 4.6 a lot.
> >
> > Gerald
>
> Does that go for the LTO IR format too? Could we change struct lto_header
LTO IR is not expected to be compatible between different compiler
versions, though it would be nice for any new format to be incompatible in
a way 4.5 can detect and give a sensible error for.
--
Joseph S. Myers
joseph@codesourcery.com