Atomic op support.  If any gcc test uses __sync builtins, it might start failing on archs that haven't implemented them yet

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47430 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelLowering.h b/lib/Target/Alpha/AlphaISelLowering.h
index a118d99..41a4b54 100644
--- a/lib/Target/Alpha/AlphaISelLowering.h
+++ b/lib/Target/Alpha/AlphaISelLowering.h
@@ -88,6 +88,9 @@
                                         MVT::ValueType VT) const;
 
     bool hasITOF() { return useITOF; }
+
+    MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
+                                                   MachineBasicBlock *BB);
   };
 }