[Bug bootstrap/63432] [5 Regression] profiledbootstrap failure with bootstrap-lto

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63432

--- Comment #20 from Jeffrey A. Law <law at redhat dot com> ---
On 10/04/14 13:29, Teresa Johnson wrote:
>> Jeff, what is intended here - should we not be threading both of these paths?
>
> I have a patch to make the mark_threaded_blocks checking of paths work
> regardless of the ordering of paths in the vec. This fixes the
> failure.
This seems like a better solution.  It'll decrease unnecessary block 
copying.

>
> The other approach is whenever we finish threading a path, go through
> the vec of remaining paths and update the edges for any that have been
> affected by the threading and that should instead include the
> duplicated edges.
That'd probably work too, but I suspect there's not much, if any, 
benefit to keeping both paths.

Jeff