[llvm] r185831 - Use Clang's __has_* macros in Compiler.h to test for features

[Reid Kleckner]

OK, I relanded this in r185850.  See the commit description, I was able to
repro with clang 3.1 and fixed the problem.


On Mon, Jul 8, 2013 at 2:20 PM, Reid Kleckner <rnk at google.com> wrote:

> On Mon, Jul 8, 2013 at 1:54 PM, David Dean <david_dean at apple.com> wrote:
>
>> On 8 Jul 2013, at 10:47 AM, Chandler Carruth <chandlerc at google.com>
>> wrote:
>>
>> > It would be really helpful to provide more information than this as
>> many people don't *have* access to a mac...
>>
>> Could you please be more specific about what information is not
>> available? This is a publicly accessible build master, so all the results
>> and logs should be there.
>
>
> I can't figure out the SVN revision of the host compiler from the buildbot
> steps as-is.  Can we print that or make it a buildbot property?
>
> Since I can't see the compiler version, I can't see the first build that
> uses the updated host compiler.
>
> How recent is the host compiler?  I'm assuming it's pretty fresh, so I'm
> going to try rebuilding with a newer clang.  If I can repro, then I'm going
> to recommit the patch with a fix.  Otherwise I'll do some more testing.
>
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