[GHC] #8820: 7.8 RC1 unregisterised fails selfbootstrap on 64 bit Linux

[GHC]

#8820: 7.8 RC1 unregisterised fails selfbootstrap on 64 bit Linux
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       Reporter:  trommler        |             Owner:
           Type:  bug             |            Status:  new
       Priority:  normal          |         Milestone:
      Component:  Compiler        |           Version:  7.8.1-rc1
       Keywords:                  |  Operating System:  Unknown/Multiple
   Architecture:                  |   Type of failure:  Building GHC failed
  Unknown/Multiple                |         Test Case:
     Difficulty:  Unknown         |          Blocking:
     Blocked By:                  |
Related Tickets:  #8819           |
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 Selfbootstrap of an unregisterised ghc fails on 64 bit PowerPC and AMD but
 not on 32 bit (PowerPC or Intel):
 {{{
 [10021s] "inplace/bin/ghc-stage1" -static  -H32m -O -optc-mminimal-toc
 -optc-fno-builtin -Iincludes -Iincludes/dist -Iincludes/dist-
 derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts
 -Irts/dist/build -DCOMPILING_RTS -package-name rts -optc-DNOSMP -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
 [10021s] ghc-stage1: panic! (the 'impossible' happened)
 [10021s]   (GHC version 7.8.0.20140220 for powerpc64-unknown-linux):
 [10021s]        no ppt
 [10021s]     ct ct: _cj::P64 = P64[(old + 16)];
 [10021s]            _ck::P64 = R1;
 [10021s]            goto cl;
 [10021s]
 [10021s] Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 }}}

 I disabled gcc's built in functions through {{{-fno-builtin}}} which got
 rid of a load of warnings (incompatible types for the built-ins) but still
 fails as shown above.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8820>
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