diff options
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 495290d8d7..a9521bb581 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -1756,6 +1756,8 @@ SCEVHandle ScalarEvolution::createSCEV(Value *V) { if (ConstantInt *CI = dyn_cast<ConstantInt>(U->getOperand(1))) { if (CI->isNullValue()) return getSCEV(U->getOperand(1)); + if (CI->isAllOnesValue()) + return getSCEV(U->getOperand(0)); const APInt &A = CI->getValue(); unsigned Ones = A.countTrailingOnes(); if (APIntOps::isMask(Ones, A)) |