diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 69e2ce198e..3fa2a32e86 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -3212,11 +3212,14 @@ SDValue DAGCombiner::visitOR(SDNode *N) { if (N1C && N0.getOpcode() == ISD::AND && N0.getNode()->hasOneUse() && isa<ConstantSDNode>(N0.getOperand(1))) { ConstantSDNode *C1 = cast<ConstantSDNode>(N0.getOperand(1)); - if ((C1->getAPIntValue() & N1C->getAPIntValue()) != 0) + if ((C1->getAPIntValue() & N1C->getAPIntValue()) != 0) { + SDValue COR = DAG.FoldConstantArithmetic(ISD::OR, VT, N1C, C1); + if (!COR.getNode()) + return SDValue(); return DAG.getNode(ISD::AND, SDLoc(N), VT, DAG.getNode(ISD::OR, SDLoc(N0), VT, - N0.getOperand(0), N1), - DAG.FoldConstantArithmetic(ISD::OR, VT, N1C, C1)); + N0.getOperand(0), N1), COR); + } } // fold (or (setcc x), (setcc y)) -> (setcc (or x, y)) if (isSetCCEquivalent(N0, LL, LR, CC0) && isSetCCEquivalent(N1, RL, RR, CC1)){ |