[GHC] #7534: allocateRegsAndSpill: Cannot read from uninitialized register

[GHC]

#7534: allocateRegsAndSpill: Cannot read from uninitialized register
--------------------------------+-------------------------------------------
Reporter:  erikd                |          Owner:           
    Type:  bug                  |         Status:  new      
Priority:  normal               |      Component:  Compiler 
 Version:  7.7                  |       Keywords:           
      Os:  Linux                |   Architecture:  powerpc64
 Failure:  Building GHC failed  |      Blockedby:           
Blocking:                       |        Related:           
--------------------------------+-------------------------------------------
 Building git HEAD on linux-powerpc64 and I get:

 {{{
 ghc-stage1: panic! (the 'impossible' happened)
   (GHC version 7.7.20121227 for powerpc-unknown-linux):
         allocateRegsAndSpill: Cannot read from uninitialized register
     %vI_na5b
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7534>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler