[GHC] #11273: PowerPC NCG: Assign all STG float and double regs to PowerPC registers

[GHC]

#11273: PowerPC NCG: Assign all STG float and double regs to PowerPC registers
-------------------------------------+-------------------------------------
           Reporter:  trommler       |             Owner:  trommler
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.2.1
          Component:  Compiler       |           Version:  7.11
  (CodeGen)                          |
           Keywords:                 |  Operating System:  Linux
       Architecture:  powerpc        |   Type of failure:  Runtime
                                     |  performance bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Currently only `F1` through `F4` and `D1` and `D2` are assigned to
 registers in the PowerPC backend.

 Assign `F5` and `F6` and `D3` through `D6` to registers too.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11273>
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