[GHC] #14667: Compiling a function with a lot of alternatives bottlenecks on insertIntHeap
GHC
ghc-devs at haskell.org
Thu Jan 18 23:42:10 UTC 2018
#14667: Compiling a function with a lot of alternatives bottlenecks on
insertIntHeap
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Reporter: niteria | Owner: niteria
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version:
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 simonpj):
The commit in comment:1 says "Applied on top of a fix for #14667 it gives
a 30% improvement". So that implies that you have a separate fix for this
ticket. Can you
* Characterise what causes the perf problem that this ticket identifies?
* Describe your proposed fix?
If you want to revert Simon M's patch you'd better discuss it with him.
Perhaps he had a case that was improved by it.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14667#comment:5>
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