[GHC] #8199: Get rid of HEAP_ALLOCED

[GHC]

#8199: Get rid of HEAP_ALLOCED
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        Reporter:  ezyang   |            Owner:  ezyang
            Type:  feature  |           Status:  new
  request                   |        Milestone:  7.10.1
        Priority:  normal   |          Version:  7.7
       Component:           |         Keywords:
  Compiler                  |     Architecture:  Unknown/Multiple
      Resolution:           |       Difficulty:  Project (more than a week)
Operating System:           |       Blocked By:  2841
  Unknown/Multiple          |  Related Tickets:
 Type of failure:           |
  None/Unknown              |
       Test Case:           |
        Blocking:           |
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Comment (by ezyang):

 Full perf numbers on latest head, including the outliers (in both
 directions).

 {{{
    binary-trees          +5.2%     +0.0%     +6.4%     +6.8%     +0.0%
    k-nucleotide          +5.2%     +0.0%     +3.7%     +3.7%     +0.0%
         integer          +5.1%     +0.0%     -8.2%     -8.1%     +0.0%
 -----------------------------------------------------------------------
             Min          +4.9%     +0.0%     -8.2%     -8.1%    -12.5%
             Max          +6.0%     +0.0%     +6.4%     +6.8%   +100.0%
  Geometric Mean          +5.1%     +0.0%     -1.2%     -1.1%     +6.2%
 }}}

 Overall, most programs saw a slight increase in runtime (in the 0-0.2
 range), while a number of programs saw a 1-4% reduction in runtime. I
 wonder if the slight increase in runtime is primarily due to the cost of
 initializing the indirections.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8199#comment:7>
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