Subzero: Fix target attribute when SZTARGET is defined.

src/IceDefs.h

 //===- subzero/src/IceDefs.h - Common Subzero declarations ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 29 matching lines @@
 #include <memory>
 #include <mutex>
 #include <set>
 #include <string>
 #include <system_error>
 #include <unordered_map>
 #include <unordered_set>
 #include <utility>
 #include <vector>
 
+#define XSTRINGIFY(x) STRINGIFY(x)
+#define STRINGIFY(x) #x
+
 namespace Ice {
 
 class Assembler;
 template <template <typename> class> class BitVectorTmpl;
 class Cfg;
 class CfgNode;
 class Constant;
 class ELFObjectWriter;
 class ELFStreamer;
 class FunctionDeclaration;
@@ skipping 387 matching lines @@
   RPE_PooledConstantReordering,
   RPE_RegAllocRandomization,
   RPE_num
 };
 
 using RelocOffsetArray = llvm::SmallVector<class RelocOffset *, 4>;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEDEFS_H