Add the new @llvm.nacl.atomic.fence.all intrinsic

include/llvm/IR/InlineAsm.h

Index: include/llvm/IR/InlineAsm.h
diff --git a/include/llvm/IR/InlineAsm.h b/include/llvm/IR/InlineAsm.h
index 33e4ab8522d1bf2fa2b2d7953798e28e2ae191d3..2c4a55820075b9b473fdbd5ffe38d65225b348dc 100644
--- a/include/llvm/IR/InlineAsm.h
+++ b/include/llvm/IR/InlineAsm.h
@@ -92,6 +92,13 @@ public:
   ///
   static bool Verify(FunctionType *Ty, StringRef Constraints);
 
+  // @LOCALMOD-START
+  /// isAsmMemory - Returns true if the Instruction corresponds to
+  /// ``asm("":::"memory")``, which is often used as a compiler barrier.
+  ///
+  bool isAsmMemory() const;
+  // @LOCALMOD-END
+
   // Constraint String Parsing 
   enum ConstraintPrefix {
     isInput,            // 'x'