[Google] Port patch r215585 to Google/4.9 branch

[Carrot Wei]

Yes, it has been long time since last merge, so it is good idea to do
another merge.

On Tue, Dec 16, 2014 at 11:32 AM, Xinliang David Li <davidxl@google.com> wrote:
> The fix is already in upstream gcc-4.9 branch? If yes, we just need a merge.
>
> David
>
> On Tue, Dec 16, 2014 at 11:30 AM, Carrot Wei <carrot@google.com> wrote:
>> Hi
>>
>> In Google application we hit the same problem as
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63341, so we also need
>> the patch r215585 for Google/4.9 branch.
>>
>> It passed following tests:
>> bootstrap and regression test on x86-64.
>> regression test on ppc.
>>
>> Google reference 18687126.
>>
>> OK for Google/4.9 branch?