[llvm] r176538 - Fix PR15355

[Michael Liao]

Hi Golin

The patch is under review at
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130304/167670.html

Thanks
- Michael

On Thu, 2013-03-07 at 08:08 +0800, Renato Golin wrote:
> On 6 March 2013 08:17, Michael Liao <michael.liao at intel.com> wrote:
>         Author: hliao
>         Date: Tue Mar  5 18:17:04 2013
>         New Revision: 176538
>         
>         URL: http://llvm.org/viewvc/llvm-project?rev=176538&view=rev
>         Log:
>         Fix PR15355
>         
>         - Clear 'mayStore' flag when loading from the atomic variable
>         before the
>           spin loop
>         - Clear kill flag from one use to multiple use in registers
>         forming the
>           address to that atomic variable
>         - don't use a physical register as live-in register in BB
>         (neither entry
>           nor landing pad.) by copying it into virtual register
>         
>         (patch by Cameron Zwarich)
> 
> 
> Hi Michael,
> 
> 
> One of the tests is not working on the armv5 bot, I guess we can mark
> the whole dir as x86 only?
> 
> 
> cheers,
> --renato