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/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 3641d0d..5bf85d4 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -507,7 +507,8 @@
                                           MachineBasicBlock *BB,
                                           unsigned Op1,
                                           unsigned Op2,
-                                          bool NeedsCarry) const;
+                                          bool NeedsCarry = false,
+                                          bool IsCmpxchg = false) const;
     MachineBasicBlock * EmitAtomicBinaryMinMax(MachineInstr *MI,
                                                MachineBasicBlock *BB,
                                                unsigned Size,