Rebased PNaCl localmods in LLVM to 223109

include/llvm/IR/InlineAsm.h

 //===-- llvm/InlineAsm.h - Class to represent inline asm strings-*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This class represents the inline asm strings, which are Value*'s that are
@@ skipping 70 matching lines @@
   
   const std::string &getAsmString() const { return AsmString; }
   const std::string &getConstraintString() const { return Constraints; }
 
   /// Verify - This static method can be used by the parser to check to see if
   /// the specified constraint string is legal for the type.  This returns true
   /// if legal, false if not.
   ///
   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'
     isOutput,           // '=x'
     isClobber           // '~x'
   };
   
   typedef std::vector<std::string> ConstraintCodeVector;
   
   struct SubConstraintInfo {
@@ skipping 192 matching lines @@
       return false;
     RC = High - 1;
     return true;
   }
 
 };
 
 } // End llvm namespace
 
 #endif