[GHC] #8871: No-op assignment I64[BaseReg + 784] = I64[BaseReg + 784]; is generated into optimized Cmm

[GHC]

#8871: No-op assignment I64[BaseReg + 784] = I64[BaseReg + 784]; is generated into
optimized Cmm
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        Reporter:  kgardas           |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.9
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Other             |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by kgardas):

 Also for your reference this is slightly out-dated HEAD (master branch)
 where the last patch is:
 {{{
 commit 018676c7f883886b388652c913c99a10d2591b0b
 Author: Herbert Valerio Riedel <hvr at gnu.org>
 Date:   Sun Feb 23 22:00:57 2014 +0100

     Use U+2018 instead of U+201B quote mark in compiler messages

     This matches GCC's choice of Unicode quotation marks (i.e. U+2018 and
 U+2019)
     and therefore looks more familiar on the console. This addresses
 #2507.

     Signed-off-by: Herbert Valerio Riedel <hvr at gnu.org>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8871#comment:3>
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