#7498: panic : Register allocator: out of stack slots (need 147)
Reporter:  erikd                |          Owner:          
    Type:  bug                  |         Status:  new     
Priority:  normal               |      Component:  Compiler
 Version:  7.7                  |       Keywords:          
      Os:  Linux                |   Architecture:  powerpc 
 Failure:  Building GHC failed  |      Blockedby:          
Blocking:                       |        Related:          
 Build current GHC HEAD on linux-powerpc.

 Usign the stage1 to build ```compiler/main/DynFlags.hs -o
 compiler/stage2/build/DynFlags.o``` I get:

 ghc-stage1: panic! (the 'impossible' happened)
   (GHC version 7.7.20121212 for powerpc-unknown-linux):
         Register allocator: out of stack slots (need 147)
    If you are trying to compile SHA1.hs from the crypto library then this
    is a known limitation in the linear allocator.

    Try enabling the graph colouring allocator with -fregs-graph instead.
    You can still file a bug report if you like.

Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7498>
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