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| author | Reid Spencer <rspencer@reidspencer.com> | 2007-03-19 21:04:43 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2007-03-19 21:04:43 +0000 |
| commit | 44e33e674ad560b6e6d063a930e7af6d846fb0eb (patch) | |
| tree | 7270dbf89fc8e2e530337fbfbb819bf49da6a819 /lib/Transforms | |
| parent | 5a1e3e1a7d08b1baaf8971be69e2c8862a581985 (diff) | |
| download | external_llvm-44e33e674ad560b6e6d063a930e7af6d846fb0eb.zip external_llvm-44e33e674ad560b6e6d063a930e7af6d846fb0eb.tar.gz external_llvm-44e33e674ad560b6e6d063a930e7af6d846fb0eb.tar.bz2 | |
Implement isOneBitSet in terms of APInt::countPopulation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35186 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index e38622a..dbe694f 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -3474,8 +3474,7 @@ static bool isMinValuePlusOne(const ConstantInt *C, bool isSigned) { // isOneBitSet - Return true if there is exactly one bit set in the specified // constant. static bool isOneBitSet(const ConstantInt *CI) { - uint64_t V = CI->getZExtValue(); - return V && (V & (V-1)) == 0; + return CI->getValue().countPopulation() == 1; } #if 0 // Currently unused |