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path: root/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAG.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 3947648e6a..cfe71708fe 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1965,6 +1965,7 @@ void SelectionDAG::ComputeMaskedBits(SDValue Op, APInt &KnownZero,
APInt InMask = APInt::getLowBitsSet(BitWidth, VT.getSizeInBits());
ComputeMaskedBits(Op.getOperand(0), KnownZero, KnownOne, Depth+1);
KnownZero |= (~InMask);
+ KnownOne &= (~KnownZero);
return;
}
case ISD::FGETSIGN: