[GHC] #10800: vector-0.11 compile time increased substantially with 7.10.1

[GHC]

#10800: vector-0.11 compile time increased substantially with 7.10.1
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Hmm, very interesting. Indeed it has been quite a while since I've checked
 this issue with 8.0. Judging by comment:5 it seems this was still
 reproducible,

 ||= Compiler      =||=  Real    =||= user     =||= sys  =||= allocations
 =||= max residency =||
 || 8.0.0.20160311  || 1m7.445s   || 1m1.257s   || 5.938s ||
 ||                 || 1m2.751s   || 55.979s    || 6.774s ||
 ||                 || 59.469s    || 55.507s    || 3.959s ||
 ||                 || 58.90s     || 56.98s     || 1.41s  || 39.77e9 bytes
 || 248.65e6 bytes ||
 || 7.8.4           || 2m2.411s   || 1m58.572s  || 3.429s ||
 ||                 || 2m3.170s   || 2m0.194s   || 3.027s ||
 ||                 || 2m2.185s   || 2m0.342s   || 1.834s ||
 ||                 || 2m1.44s    || 1m59.81s   || 1.61s  || 106.07e9 bytes
 || 369.51e6 bytes ||
 || 7.10.3          || 11m40.961s || 11m38.834s || 6.592s ||
 ||                 || 11m29.73s  || 11m28.62s  || 5.47s  || 454.467e9
 bytes || 70.714e6 bytes ||

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10800#comment:17>
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