#1969: enormous compile times
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Reporter: duncan | Owner: igloo
Type: merge | Status: new
Priority: normal | Milestone: 6.8.3
Component: Compiler | Version: 6.8.1
Severity: normal | Resolution:
Keywords: performance | Difficulty: Difficult (1 week)
Testcase: | Architecture: Multiple
Os: Multiple |
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Changes (by simonpj):
* owner: => igloo
* type: compile-time performance bug => merge
Comment:
Ian: you absolutely nailed the problem, thank you. I refactored a bit,
and behold the specialiser pass runs really fast on that code now. Here's
the patch, which might be worth merging to the branch:
{{{
Mon Apr 28 16:57:11 BST 2008 [EMAIL PROTECTED]
* Fix Trac #1969: perfomance bug in the specialiser
}}}
You might want to check that it cures the problem on the original code?
I don't quite know how to add a test; maybe not worth the trouble.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1969#comment:5>
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