[GHC] #8272: testing if SpLim=$rbp and Sp=$rsp changed performance at all

[GHC]

#8272: testing if SpLim=$rbp and Sp=$rsp changed performance at all
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        Reporter:  carter            |                Owner:  carter
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:                    |             Keywords:
                                     |  callingConvention
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonmar):

 > @simonmar the stack pointer experiment sans call and rest might still be
 worth measuring,yes?

 Having actual data would be a good starting point, but I'm not hopeful
 that it will be a win.

 > @simonmar: When you say "terrible time walking the stack", you mean GC,
 right?

 Yes, and exceptions and various other RTS routines that need to understand
 the stack.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8272#comment:19>
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