[GHC] #5208: Unroll array copy/clone primops in the native and LLVM code generators

[GHC]

#5208: Unroll array copy/clone primops in the native and LLVM code generators
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    Reporter:  tibbe             |        Owner:              
        Type:  feature request   |       Status:  patch       
    Priority:  normal            |    Milestone:              
   Component:  Compiler          |      Version:  7.1         
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Comment(by tibbe):

 I've attached a patch that unrolls the primops in the x86 backend,
 together with a small test. The `0002-Unroll-memcpy-in-
 the-X86-backend.patch` patch depends on `0001-Use-the-new-memcpy-memmove-
 memset-MachOps.patch`. Please review.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5208#comment:6>
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