Wed Feb 10 01:47:33 PST 2010 [email protected]
* Stop fruitless ANF-ing
The simplifier is taking more iterations than it should, because we
were fruitlessly ANF-ing a top-level declaration of form
x = Ptr "foo"#
to get
x = let v = "foo"# in Ptr v
and then inlining v again. This patch makes Simplify.makeTrivial
top-level aware, so that it doesn't ANF if it's going to be undone.
M ./compiler/simplCore/Simplify.lhs -21 +55
View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20100210094733-1287e-a662ecd131a28f2d9b87806468583a962e2d7bd1.gz
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