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add ConstantRange::difference (to perform set difference/relative complement)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159352 91177308-0d34-0410-b5e6-96231b3b80d8
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Nuno Lopes
2012-06-28 16:10:13 +00:00
parent ceb5bc7df1
commit 62d7afad8f
3 changed files with 27 additions and 0 deletions
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4
include/llvm/Support/ConstantRange.h
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@ -155,6 +155,10 @@ public:
/// constant range.
ConstantRange subtract(const APInt &CI) const;
/// \brief Subtract the specified range from this range (aka relative
/// complement of the sets).
ConstantRange difference(const ConstantRange &CR) const;
/// intersectWith - Return the range that results from the intersection of
/// this range with another range. The resultant range is guaranteed to
/// include all elements contained in both input ranges, and to have the