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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 | 129a86792d1a356d0da7ccea7c4262448c1d37ea (patch) | |
| tree | 85007cc0edd77e26612e6363a557fd67ff4a1b8b /llvm/lib | |
| parent | 450434ed659bcc548a3ac01e8fa40786fa722154 (diff) | |
| download | bcm5719-llvm-129a86792d1a356d0da7ccea7c4262448c1d37ea.tar.gz bcm5719-llvm-129a86792d1a356d0da7ccea7c4262448c1d37ea.zip | |
Implement isOneBitSet in terms of APInt::countPopulation.
llvm-svn: 35186
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index e38622a569f..dbe694fad78 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/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 |
