[GHC] #8033: add AVX register support to llvm calling convention

[GHC]

#8033: add AVX register support to llvm calling convention
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        Reporter:  carter            |            Owner:  carter
            Type:  task              |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by gmainland):

 SSE (the original) only allowed short vectors of 4 single-precision
 floating point values. So yes, I think the current version is buggy, and
 strictly speaking incorrect! With SSE1 (only), you cannot put Double
 arguments into XMM*.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8033#comment:21>
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