[GHC] #7976: Failure building master (perf) on i686-pc-linux-gnu

[GHC]

#7976: Failure building master (perf) on i686-pc-linux-gnu
--------------------------------+-------------------------------------------
Reporter:  nickie               |          Owner:          
    Type:  bug                  |         Status:  new     
Priority:  normal               |      Component:  Compiler
 Version:  7.7                  |       Keywords:          
      Os:  Linux                |   Architecture:  x86     
 Failure:  Building GHC failed  |      Blockedby:          
Blocking:                       |        Related:          
--------------------------------+-------------------------------------------
 It seems that the nightly builds on x86 for the master branch fail since
 June 9 (the last successful build was on June 8).

 The message is:

 {{{
   ghc-stage1: panic! (the 'impossible' happened)
     (GHC version 7.7.20130609 for i386-unknown-linux):
         getRegister(x86) I64[Sp]
 }}}

 I'm getting the same when cloning from darcs and trying to compile the
 master branch on my x86 machine.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7976>
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