[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):

 Caching tags improves binary sizes and performance improvement a little
 bit. Once again I've included some outliers.

 {{{
    binary-trees          +4.9%     +0.0%     +2.4%     +3.1%     +0.0%
    cryptarithm1          +4.8%     +0.0%     -7.0%     -7.0%   +100.0%
         integer          +4.9%     +0.0%     -8.2%     -8.4%     +0.0%
    k-nucleotide          +4.9%     +0.0%     -9.5%     -9.4%     +0.0%
       typecheck          +4.9%     +0.0%     +8.0%     +8.0%   +100.0%
 -----------------------------------------------------------------------
             Min          +4.6%     +0.0%     -9.5%     -9.4%     -1.1%
             Max          +5.8%     +0.0%     +8.0%     +8.0%   +100.0%
  Geometric Mean          +4.9%     -0.0%     -2.0%     -2.1%     +6.4%
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8199#comment:10>
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