diff options
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 9907066832..f5e0b225db 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -9641,8 +9641,10 @@ static SDValue PerformOrCombine(SDNode *N, SelectionDAG &DAG, if (ShAmt1.getOpcode() == ISD::SUB) { SDValue Sum = ShAmt1.getOperand(0); if (ConstantSDNode *SumC = dyn_cast<ConstantSDNode>(Sum)) { - if (SumC->getSExtValue() == Bits && - ShAmt1.getOperand(1) == ShAmt0) + SDValue ShAmt1Op1 = ShAmt1.getOperand(1); + if (ShAmt1Op1.getNode()->getOpcode() == ISD::TRUNCATE) + ShAmt1Op1 = ShAmt1Op1.getOperand(0); + if (SumC->getSExtValue() == Bits && ShAmt1Op1 == ShAmt0) return DAG.getNode(Opc, DL, VT, Op0, Op1, DAG.getNode(ISD::TRUNCATE, DL, |