diff options
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 27676562d4..3dc78470ff 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -977,8 +977,8 @@ Constant *llvm::ConstantFoldBinaryInstruction(unsigned Opcode, return Constant::getNullValue(C1->getType()); // X lshr undef -> 0 // undef lshr X -> 0 case Instruction::AShr: - if (!isa<UndefValue>(C2)) - return C1; // undef ashr X --> undef + if (!isa<UndefValue>(C2)) // undef ashr X --> all ones + return Constant::getAllOnesValue(C1->getType()); else if (isa<UndefValue>(C1)) return C1; // undef ashr undef -> undef else |