[GHC] #16094: panic! (the 'impossible' happened): for powerpc-unknown-linux getRegister(ppc): I64[I32[BaseReg + 812] + 64]

[GHC]

#16094: panic! (the 'impossible' happened): for powerpc-unknown-linux
getRegister(ppc): I64[I32[BaseReg + 812] + 64]
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        Reporter:  slyfox            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by slyfox):

 * cc: trommler (added)


Comment:

 I think it happens in '''stg_gc_noregs''' function on
 '''StgTSO_alloc_limit(CurrentTSO) `lt` (0::I64)''' expression.

 CCing Peter in case it's an obvious omission in CMM or NCG.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16094#comment:1>
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