[SubZero] Generate ELF output for MIPS

src/IceInstMIPS32.h

 //===- subzero/src/IceInstMIPS32.h - MIPS32 machine instrs --*- C++ -*-===    //
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 181 matching lines @@
     Sw,
     Swc1,
     Trunc_l_d,
     Trunc_l_s,
     Trunc_w_d,
     Trunc_w_s,
     Xor,
     Xori
   };
 
+  static constexpr size_t InstSize = sizeof(uint32_t);
+
   static const char *getWidthString(Type Ty);
 
   void dump(const Cfg *Func) const override;
 
   void dumpOpcode(Ostream &Str, const char *Opcode, Type Ty) const {
     Str << Opcode << "." << Ty;
   }
 
   // TODO(rkotler): while branching is not implemented
   bool repointEdges(CfgNode *, CfgNode *) override { return true; }
@@ skipping 456 matching lines @@
   }
 
   const CfgNode *getTargetTrue() const { return TargetTrue; }
   const CfgNode *getTargetFalse() const { return TargetFalse; }
 
   bool isUnconditionalBranch() const override {
     return Predicate == CondMIPS32::AL;
   }
   bool repointEdges(CfgNode *OldNode, CfgNode *NewNode) override;
   void emit(const Cfg *Func) const override;
-  void emitIAS(const Cfg *Func) const override { (void)Func; };
+  void emitIAS(const Cfg *Func) const override;
   void dump(const Cfg *Func) const override;
   static bool classof(const Inst *Instr) { return isClassof(Instr, Br); }
 
 private:
   InstMIPS32Br(Cfg *Func, const CfgNode *TargetTrue, const CfgNode *TargetFalse,
                const InstMIPS32Label *Label, const CondMIPS32::Cond Cond);
 
   InstMIPS32Br(Cfg *Func, const CfgNode *TargetTrue, const CfgNode *TargetFalse,
                Operand *Src0, const InstMIPS32Label *Label,
                const CondMIPS32::Cond Cond);
@@ skipping 211 matching lines @@
 template <> void InstMIPS32Mtlo::emit(const Cfg *Func) const;
 template <> void InstMIPS32Mthi::emit(const Cfg *Func) const;
 template <> void InstMIPS32Mult::emit(const Cfg *Func) const;
 template <> void InstMIPS32Multu::emit(const Cfg *Func) const;
 template <> void InstMIPS32Lui::emit(const Cfg *Func) const;
 
 } // end of namespace MIPS32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINSTMIPS32_H