the 'impossible' happened : iselExpr64(powerpc)

After working around the problem in #9828 (closed) I now run into this:

"inplace/bin/ghc-stage1" -static  -H64m -O -fasm -keep-tmp-files -Iincludes \
    -Iincludes/dist -Iincludes/dist-derivedconstants/header \
    -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build \
    -DCOMPILING_RTS -this-package-key rts -dcmm-lint      -i -irts \
    -irts/dist/build -irts/dist/build/autogen -Irts/dist/build \
    -Irts/dist/build/autogen -O2    -c rts/StgStartup.cmm \
    -o rts/dist/build/StgStartup.o

ghc-stage1: panic! (the 'impossible' happened)
  (GHC version 7.9.20141122 for powerpc-unknown-linux):
        iselExpr64(powerpc)
  I64[_c1::P32 + 64] - %MO_UU_Conv_W32_W64((Hp + 4) - I32[_c2::I32])

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

Trac metadata

Trac field	Value
Version	7.9
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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