[GHC] #8287: exploring calling convention changes and related engineering for 7.10

[GHC]

#8287: exploring calling convention changes and related engineering for 7.10
-------------------------------------+------------------------------------
        Reporter:  carter            |            Owner:
            Type:  task              |           Status:  new
        Priority:  high              |        Milestone:  7.10.1
       Component:  Compiler          |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Rocket Science
       Test Case:                    |       Blocked By:  8299
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by duncan):

 >  I attached nofib results comparing amd64 vs. x32 and i686 vs. x32; x32
 is about 15% faster on average than either.

 Impressive. So that's our memory/cache penalty for having all our data
 structures 2x the size on x86-64 ABI.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8287#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler