diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 44ce9981a6..04fef37017 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1284,7 +1284,9 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { } else { // Make sure the condition is either zero or one. It may have been // promoted from something else. - Tmp1 = DAG.getZeroExtendInReg(Tmp1, MVT::i1); + unsigned NumBits = MVT::getSizeInBits(Tmp1.getValueType()); + if (!TLI.MaskedValueIsZero(Tmp1, (~0ULL >> (64-NumBits))^1)) + Tmp1 = DAG.getZeroExtendInReg(Tmp1, MVT::i1); Result = DAG.getSelectCC(Tmp1, DAG.getConstant(0, Tmp1.getValueType()), Tmp2, Tmp3, ISD::SETNE); |