patch applied (ghc): Add extra WARN test
Simon Peyton Jones
simonpj at microsoft.com
Thu Sep 18 11:57:43 EDT 2008
Wed Sep 17 09:24:34 PDT 2008 simonpj at microsoft.com
* Add extra WARN test
This warning tests that the arity of a function does not decrease.
And that it's at least as great as the strictness signature.
Failing this test isn't a disater, but it's distinctly odd and
usually indicates that not enough information is getting propagated
around, and hence you may get more simplifier iterations.
M ./compiler/simplCore/Simplify.lhs -2 +15
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