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| author | Owen Anderson <resistor@mac.com> | 2010-08-07 05:47:46 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2010-08-07 05:47:46 +0000 |
| commit | 9773e45a1e97f5098905bac26b8b8b7c844473f0 (patch) | |
| tree | db9e2c980a9a3b752b6bb1e93e4cdd3877cbeefc /lib/Support/ConstantRange.cpp | |
| parent | dbac071050010effb95febae0ddf72102551323d (diff) | |
| download | llvm-9773e45a1e97f5098905bac26b8b8b7c844473f0.tar.gz llvm-9773e45a1e97f5098905bac26b8b8b7c844473f0.tar.bz2 llvm-9773e45a1e97f5098905bac26b8b8b7c844473f0.tar.xz | |
Add an inverse() method to ConstantRange.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110504 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/ConstantRange.cpp')
| -rw-r--r-- | lib/Support/ConstantRange.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp index fb0442823c..26a23efe03 100644 --- a/lib/Support/ConstantRange.cpp +++ b/lib/Support/ConstantRange.cpp @@ -655,6 +655,17 @@ ConstantRange::lshr(const ConstantRange &Amount) const { return ConstantRange(min, max); } +ConstantRange ConstantRange::inverse() const { + if (isFullSet()) { + return ConstantRange(APInt::getNullValue(Lower.getBitWidth()), + APInt::getNullValue(Lower.getBitWidth())); + } else if (isEmptySet()) { + return ConstantRange(APInt::getAllOnesValue(Lower.getBitWidth()), + APInt::getAllOnesValue(Lower.getBitWidth())); + } + return ConstantRange(Upper, Lower); +} + /// print - Print out the bounds to a stream... /// void ConstantRange::print(raw_ostream &OS) const { |