#2132: Optimise nested comparisons
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: low | Milestone: 7.4.1
Component: Compiler | Version: 6.8.2
Resolution: | Keywords:
Testcase: | Blockedby:
Difficulty: Unknown | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: Runtime performance bug |
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Changes (by michalt):
* owner: simonpj =>
* status: patch => new
Comment:
The patch doesn't take into account variable shadowing --- I'll try to fix
that
once I have some more time. I've never noticed any problems probably
because
simplifier removes (most of) it and the optimization fires only in pretty
special cases (nested comparisons, no arithmetic)..
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2132#comment:22>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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