diff options
Diffstat (limited to 'lib/Target/SystemZ/SystemZISelLowering.cpp')
| -rw-r--r-- | lib/Target/SystemZ/SystemZISelLowering.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp index 4a5fb42..f6e1853 100644 --- a/lib/Target/SystemZ/SystemZISelLowering.cpp +++ b/lib/Target/SystemZ/SystemZISelLowering.cpp @@ -1933,10 +1933,10 @@ SDValue SystemZTargetLowering::lowerOR(SDValue Op, SelectionDAG &DAG) const { // high 32 bits and just masks out low bits. We can skip it if so. if (HighOp.getOpcode() == ISD::AND && HighOp.getOperand(1).getOpcode() == ISD::Constant) { - ConstantSDNode *MaskNode = cast<ConstantSDNode>(HighOp.getOperand(1)); - uint64_t Mask = MaskNode->getZExtValue() | Masks[High]; - if ((Mask >> 32) == 0xffffffff) - HighOp = HighOp.getOperand(0); + SDValue HighOp0 = HighOp.getOperand(0); + uint64_t Mask = cast<ConstantSDNode>(HighOp.getOperand(1))->getZExtValue(); + if (DAG.MaskedValueIsZero(HighOp0, APInt(64, ~(Mask | 0xffffffff)))) + HighOp = HighOp0; } // Take advantage of the fact that all GR32 operations only change the |