[GHC] #8971: Native Code Generator 7.8.1 RC2 is not as optimized as 7.6.3...

[GHC]

#8971: Native Code Generator 7.8.1 RC2 is not as optimized as 7.6.3...
--------------------------------------------+------------------------------
        Reporter:  GordonBGood              |            Owner:
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:
       Component:  Compiler (NCG)           |          Version:  7.8.1-rc2
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  Runtime performance bug  |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:
--------------------------------------------+------------------------------

Comment (by awson):

 Also, when on 32-bit the difference between NCG and LLVM is *huge*, the
 difference on 64-bit (Windows) is also pretty much big - about 55% on
 Yorkfield, and 40% on Sandy Bridge.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8971#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler