[GHC] #7684: cgrun071 segfaults

[GHC]

#7684: cgrun071 segfaults
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        Reporter:  tibbe          |            Owner:  leroux
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:  7.8.1
       Component:  Compiler       |          Version:  7.7
      Resolution:                 |         Keywords:
Operating System:  MacOS X        |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:  cgrun071       |       Blocked By:
        Blocking:                 |  Related Tickets:
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Comment (by carter):

 I have a theory:
 the pop count code was only added after 7.6 release I believe, and may
 have never been tested on macs.

 Xcode 4.6 and earlier provides a very very old gcc, gcc 4.2.

 gcc4.2 doesn't support sse4 instructions:
 http://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/i386-and-
 x86_002d64-Options.html#i386-and-x86_002d64-Options

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7684#comment:17>
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