[GHC] #7741: Add SIMD support to x86/x86_64 NCG

[GHC]

#7741: Add SIMD support to x86/x86_64 NCG
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        Reporter:  shelarcy          |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (NCG)    |              Version:  7.7
      Resolution:                    |             Keywords:  SIMD
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #3557             |  Differential Rev(s):
       Wiki Page:  wiki:SIMD         |
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Comment (by winter):

 I see, ghc-prim's current SIMD APIs seems support up to 512bits
 instructions. Does that means we are going to support up to AVX512?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7741#comment:16>
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