[GHC] #15249: Add support for cmpeq and cmpgt MMX intrinsics

[GHC]

#15249: Add support for cmpeq and cmpgt MMX intrinsics
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           Reporter:  newhoggy       |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:  primops        |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Add primop support for the following MMX intrinsics:

 {{{#!c
 __m64 _mm_cmpeq_pi16 (__m64 a, __m64 b)
 __m64 _mm_cmpeq_pi32 (__m64 a, __m64 b)
 __m64 _mm_cmpeq_pi8 (__m64 a, __m64 b)
 __m64 _mm_cmpeq_pi8 (__m64 a, __m64 b)
 __m64 _mm_cmpgt_pi16 (__m64 a, __m64 b)
 __m64 _mm_cmpgt_pi32 (__m64 a, __m64 b)
 __m64 _mm_cmpgt_pi8 (__m64 a, __m64 b)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15249>
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