diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 048737f13e2..b4bd5aa0b42 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -384,7 +384,7 @@ static bool MaskedValueIsZero(const SDOperand &Op, uint64_t Mask, return (Mask & ((1ULL << SrcBits)-1)) == 0; // Returning only the zext bits. case ISD::ZERO_EXTEND: SrcBits = MVT::getSizeInBits(Op.getOperand(0).getValueType()); - return MaskedValueIsZero(Op.getOperand(0),Mask & ((1ULL << SrcBits)-1),TLI); + return MaskedValueIsZero(Op.getOperand(0),Mask & (~0ULL >> (64-SrcBits)),TLI); case ISD::AssertZext: SrcBits = MVT::getSizeInBits(cast<VTSDNode>(Op.getOperand(1))->getVT()); return (Mask & ((1ULL << SrcBits)-1)) == 0; // Returning only the zext bits. |
