pprCallishMachOp_for_C: MO_Prefetch_Data 0 not supported

Compiling on linux-powerpc64, the build fails on:

ghc-stage1: panic! (the 'impossible' happened)
  (GHC version 7.7.20131010 for powerpc64-unknown-linux):
        pprCallishMachOp_for_C: MO_Prefetch_Data 0 not supported!

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

From file compiler/cmm/PprC.hs :

        (MO_Prefetch_Data _ ) -> unsupported
        --- we could support prefetch via "__builtin_prefetch"
        --- Not adding it for now

Anyone have ideas on how to make this work?

Trac metadata

Trac field	Value
Version	7.7
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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