[GHC] #13763: Performance regression (~34%) in 8.2.1, poor register allocation(?) in an inner loop over an array

[GHC]

#13763: Performance regression (~34%) in 8.2.1, poor register allocation(?) in an
inner loop over an array
-------------------------------------+-------------------------------------
        Reporter:  jberryman         |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.6.1
       Component:  Compiler (NCG)    |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:  JoinPoints
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * milestone:  8.4.1 => 8.6.1


Comment:

 Sadly this didn't quite make 8.4.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13763#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler