[patch] Move the popcnt intrinsics to a separate file

[Sebastian Pop]

On Fri, Dec 4, 2009 at 14:41, Jakub Jelinek <jakub@redhat.com> wrote:
> On Fri, Dec 04, 2009 at 11:47:33AM -0600, Sebastian Pop wrote:
>> In my opinion the _mm_popcnt_u* intrinsics should be removed from the
>> smmintrin.h, as they do not deal with XMM registers, and they should
>> be put separately in a popcount.h file, as I originally proposed, and
>> then include that file in abmintrin.h and somewhere else than smmintrin.h
>> for Intel processors.
>
> BTW, isn't popcount.h too generic header name (and likely to clash with
> other package's headers)?  Wouldn't popcntintrin.h or something similar be
> better?

Ok.

In the manuals from both Intel and AMD, an identification bit is set
by cpuid on processors containing the popcnt insn.  I would like to
propose the attached fixes that define __POPCNT__, include the
popcntintrin.h both in smmintrin.h and x86intrin.h, and add the cpuid
checks for ABM and LWP.

The patch set passes make -k check RUNTESTFLAGS=i386.exp
Ok for trunk after it passes bootstrap and regtest?

Thanks,
Sebastian
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