[SubZero] Generate MIPS.abiflags section

src/IceTargetLowering.h

 //===- subzero/src/IceTargetLowering.h - Lowering interface -----*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 598 matching lines @@
   TargetDataLowering &operator=(const TargetDataLowering &) = delete;
 
 public:
   static std::unique_ptr<TargetDataLowering> createLowering(GlobalContext *Ctx);
   virtual ~TargetDataLowering();
 
   virtual void lowerGlobals(const VariableDeclarationList &Vars,
                             const std::string &SectionSuffix) = 0;
   virtual void lowerConstants() = 0;
   virtual void lowerJumpTables() = 0;
+  virtual void emitTargetRODataSections() {}
 
 protected:
   void emitGlobal(const VariableDeclaration &Var,
                   const std::string &SectionSuffix);
 
   /// For now, we assume .long is the right directive for emitting 4 byte emit
   /// global relocations. However, LLVM MIPS usually uses .4byte instead.
   /// Perhaps there is some difference when the location is unaligned.
   static const char *getEmit32Directive() { return ".long"; }
 
@@ skipping 17 matching lines @@
   virtual void lower() {}
 
 protected:
   explicit TargetHeaderLowering(GlobalContext *Ctx) : Ctx(Ctx) {}
   GlobalContext *Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERING_H