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-rw-r--r--lib/Target/ARM/ARMISelLowering.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 8a02162665..94ddf86106 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -2841,6 +2841,11 @@ SDValue ARMTargetLowering::LowerSELECT(SDValue Op, SelectionDAG &DAG) const {
}
}
+ // ARM's BooleanContents value is UndefinedBooleanContent. Mask out the
+ // undefined bits before doing a full-word comparison with zero.
+ Cond = DAG.getNode(ISD::AND, dl, Cond.getValueType(), Cond,
+ DAG.getConstant(1, Cond.getValueType()));
+
return DAG.getSelectCC(dl, Cond,
DAG.getConstant(0, Cond.getValueType()),
SelectTrue, SelectFalse, ISD::SETNE);