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Diffstat (limited to 'lib/Support/ConstantRange.cpp')
| -rw-r--r-- | lib/Support/ConstantRange.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp index 61d333f24a..91d086b689 100644 --- a/lib/Support/ConstantRange.cpp +++ b/lib/Support/ConstantRange.cpp @@ -248,6 +248,12 @@ ConstantRange ConstantRange::subtract(const APInt &Val) const { return ConstantRange(Lower - Val, Upper - Val); } +/// \brief Subtract the specified range from this range (aka relative complement +/// of the sets). +ConstantRange ConstantRange::difference(const ConstantRange &CR) const { + return intersectWith(CR.inverse()); +} + /// 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 smallest possible |