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Add intersectsUFM
author
simonpj@microsoft.com
<unknown>
Thu, 5 Oct 2006 10:56:15 +0000
(10:56 +0000)
committer
simonpj@microsoft.com
<unknown>
Thu, 5 Oct 2006 10:56:15 +0000
(10:56 +0000)
compiler/utils/UniqFM.lhs
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diff --git
a/compiler/utils/UniqFM.lhs
b/compiler/utils/UniqFM.lhs
index
84294aa
..
2a02dc7
100644
(file)
--- a/
compiler/utils/UniqFM.lhs
+++ b/
compiler/utils/UniqFM.lhs
@@
-29,6
+29,7
@@
module UniqFM (
plusUFM,
plusUFM_C,
minusUFM,
plusUFM,
plusUFM_C,
minusUFM,
+ intersectsUFM,
intersectUFM,
intersectUFM_C,
foldUFM,
intersectUFM,
intersectUFM_C,
foldUFM,
@@
-107,6
+108,8
@@
minusUFM :: UniqFM elt1 -> UniqFM elt2 -> UniqFM elt1
intersectUFM :: UniqFM elt -> UniqFM elt -> UniqFM elt
intersectUFM_C :: (elt1 -> elt2 -> elt3)
-> UniqFM elt1 -> UniqFM elt2 -> UniqFM elt3
intersectUFM :: UniqFM elt -> UniqFM elt -> UniqFM elt
intersectUFM_C :: (elt1 -> elt2 -> elt3)
-> UniqFM elt1 -> UniqFM elt2 -> UniqFM elt3
+intersectsUFM :: UniqFM elt1 -> UniqFM elt2 -> Bool
+
foldUFM :: (elt -> a -> a) -> a -> UniqFM elt -> a
mapUFM :: (elt1 -> elt2) -> UniqFM elt1 -> UniqFM elt2
filterUFM :: (elt -> Bool) -> UniqFM elt -> UniqFM elt
foldUFM :: (elt -> a -> a) -> a -> UniqFM elt -> a
mapUFM :: (elt1 -> elt2) -> UniqFM elt1 -> UniqFM elt2
filterUFM :: (elt -> Bool) -> UniqFM elt -> UniqFM elt
@@
-450,7
+453,8
@@
minusUFM fm1 fm2 = minus_trees fm1 fm2
And taking the intersection of two UniqFM's.
\begin{code}
And taking the intersection of two UniqFM's.
\begin{code}
-intersectUFM t1 t2 = intersectUFM_C use_snd t1 t2
+intersectUFM t1 t2 = intersectUFM_C use_snd t1 t2
+intersectsUFM t1 t2 = isNullUFM (intersectUFM_C (\ _ _ -> error "urk") t1 t2)
intersectUFM_C f EmptyUFM _ = EmptyUFM
intersectUFM_C f _ EmptyUFM = EmptyUFM
intersectUFM_C f EmptyUFM _ = EmptyUFM
intersectUFM_C f _ EmptyUFM = EmptyUFM