[GHC] #7574: Register allocator chokes on certain branches with literals

[GHC]

#7574: Register allocator chokes on certain branches with literals
---------------------------------------+-----------------------------------
        Reporter:  thoughtpolice       |            Owner:  thoughtpolice
            Type:  bug                 |           Status:  new
        Priority:  highest             |        Milestone:  7.8.1
       Component:  Compiler (NCG)      |          Version:  7.7
      Resolution:                      |         Keywords:  ncg, codegen
Operating System:  Unknown/Multiple    |     Architecture:
 Type of failure:  Compile-time crash  |  Unknown/Multiple
       Test Case:                      |       Difficulty:  Unknown
        Blocking:                      |       Blocked By:  7573
                                       |  Related Tickets:  #7571,#7534
---------------------------------------+-----------------------------------

Comment (by Austin Seipp <aseipp@…>):

 In [changeset:647875eacb313b97af5525dc92df98ec32171d16/testsuite]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="647875eacb313b97af5525dc92df98ec32171d16"
 Add a failing test, see #7574.

 Signed-off-by: Austin Seipp <aseipp at pobox.com>
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7574#comment:19>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler