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Re: [PATCH, rs6000] Add support to __builtin_cpu_supports() for two new HWCAP2 bits


On 6/27/17 10:51 AM, Segher Boessenkool wrote:
> On Mon, Jun 26, 2017 at 10:33:48PM -0500, Peter Bergner wrote:
>> Tulio added support for two new AT_HWCAP2 bits to GLIBC which have been
>> recently added to the kernel:
>>
>>   https://www.sourceware.org/ml/libc-alpha/2017-06/msg00069.html
>>
>> This patch adds support for them to the __builtin_cpu_supports() builtin
>> function so we can test for them.
>>
>> Tested on powerpc64le-linux with no regressions.  Is this ok for trunk?
> 
> Okay.
> 
> Could we use a shared (with glibc) header, or reduce duplication some
> other way?

Not really, since either GCC or GLIBC could be built with/against an
older version of the other package and if that package were the one
to have the defines, then we'd get a build error.

Peter


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