[GHC] #10648: Some 64-vector SIMD primitives are absolutely useless

[GHC]

#10648: Some 64-vector SIMD primitives are absolutely useless
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              Reporter:  mniip       |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Compiler    |           Version:
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |        Blocked By:
             Test Case:              |   Related Tickets:
              Blocking:              |
Differential Revisions:              |
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 The primitives `packInt8X64#`, `packWord8X64#`, `unpackInt8X64#`,
 `unpackWord8X64#` cannot be used because their types include unboxed
 64-tuples, but any haskell code using them does not compile due to the
 62-tuple limitation.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10648>
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