[GHC] #594: Support use of SSE2 in the x86 native code genreator

[GHC]

#594: Support use of SSE2 in the x86 native code genreator
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 Reporter:  simonmar        |       Owner:       
     Type:  task            |      Status:  new  
 Priority:  normal          |   Milestone:       
Component:  Compiler (NCG)  |     Version:  6.4.1
 Severity:  normal          |    Keywords:       
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Currently only the x86_64 native code generator supports SSE2, but it
 would be worthwhile enabling this in the x86 backend too.

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Ticket URL: <http://cvs.haskell.org/trac/ghc/ticket/594>
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