[llvm] r263325 - [X86] Make sure we do not clobber RBX with cmpxchg when used as a base pointer.

[Quentin Colombet via llvm-commits]

> On Mar 14, 2016, at 11:14 AM, Tom Stellard <tom at stellard.net> wrote:
> 
> On Mon, Mar 14, 2016 at 09:29:05AM -0700, Quentin Colombet via llvm-commits wrote:
>> 
>>> On Mar 11, 2016, at 6:54 PM, Joerg Sonnenberger via llvm-commits <llvm-commits at lists.llvm.org> wrote:
>>> 
>>> On Sat, Mar 12, 2016 at 02:25:28AM -0000, Quentin Colombet via llvm-commits wrote:
>>>> Author: qcolombet
>>>> Date: Fri Mar 11 20:25:27 2016
>>>> New Revision: 263325
>>>> 
>>>> URL: http://llvm.org/viewvc/llvm-project?rev=263325&view=rev
>>>> Log:
>>>> [X86] Make sure we do not clobber RBX with cmpxchg when used as a base pointer.
>>> 
>>> Is this an issue we hit in 3.8 as well?
>> 
>> Yes, it is.
>> The bug has been here for 5 years already, though.
>> 
> 
> Should we pull this into 3.8.1 ?

Would be nice.

Nadav, what do you think?

Cheers,
-Quentin

> 
> -Tom
> 
>> Cheers,
>> -Quentin
>> 
>>> 
>>> Joerg
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