64-bit atomic cmpxchg for ARM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 37e8956..73a4322 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -2312,16 +2312,20 @@
}
SDNode *ARMDAGToDAGISel::SelectAtomic64(SDNode *Node, unsigned Opc) {
- SDValue Chain = Node->getOperand(0);
- SDValue In1 = Node->getOperand(1);
- SDValue In2L = Node->getOperand(2);
- SDValue In2H = Node->getOperand(3);
+ SmallVector<SDValue, 6> Ops;
+ Ops.push_back(Node->getOperand(1)); // Ptr
+ Ops.push_back(Node->getOperand(2)); // Low part of Val1
+ Ops.push_back(Node->getOperand(3)); // High part of Val1
+ if (Opc == ARM::ATOMCMPXCHG6432) {
+ Ops.push_back(Node->getOperand(4)); // Low part of Val2
+ Ops.push_back(Node->getOperand(5)); // High part of Val2
+ }
+ Ops.push_back(Node->getOperand(0)); // Chain
MachineSDNode::mmo_iterator MemOp = MF->allocateMemRefsArray(1);
MemOp[0] = cast<MemSDNode>(Node)->getMemOperand();
- const SDValue Ops[] = { In1, In2L, In2H, Chain};
SDNode *ResNode = CurDAG->getMachineNode(Opc, Node->getDebugLoc(),
- MVT::i32, MVT::i32, MVT::Other, Ops,
- array_lengthof(Ops));
+ MVT::i32, MVT::i32, MVT::Other,
+ Ops.data() ,Ops.size());
cast<MachineSDNode>(ResNode)->setMemRefs(MemOp, MemOp + 1);
return ResNode;
}
@@ -3121,6 +3125,8 @@
return SelectAtomic64(N, ARM::ATOMAND6432);
case ARMISD::ATOMSWAP64_DAG:
return SelectAtomic64(N, ARM::ATOMSWAP6432);
+ case ARMISD::ATOMCMPXCHG64_DAG:
+ return SelectAtomic64(N, ARM::ATOMCMPXCHG6432);
}
return SelectCode(N);