[GHC] #13960: Ticks exhausted with 8.0.2

GHC ghc-devs at haskell.org
Tue Jul 11 21:20:29 UTC 2017


#13960: Ticks exhausted with 8.0.2
-------------------------------------+-------------------------------------
        Reporter:  tom-bop           |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 Thanks for reducing the test! I looked briefly at the 8.0.2 core-to-core
 output and it looks like we are seeing a great deal of simplification due
 to `bytestring`'s `Builder` mechanism.

 I also tested on 8.2.1 and it seems that the compiler is again able to
 simplify this program with the default ticks limit. That being said, we
 are still seeing a lot more builder things than I would expect in such a
 simple program, so I think a bit more investigation is in order.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13960#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler


More information about the ghc-tickets mailing list