[Subzero][MIPS] Implement conditional branches and integer comparisons

src/IceInstMIPS32.cpp

 //===- subzero/src/IceInstMips32.cpp - Mips32 instruction implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 /// \file
@@ skipping 47 matching lines @@
 template <> const char *InstMIPS32And::Opcode = "and";
 template <> const char *InstMIPS32Mfhi::Opcode = "mfhi";
 template <> const char *InstMIPS32Mflo::Opcode = "mflo";
 template <> const char *InstMIPS32Mthi::Opcode = "mthi";
 template <> const char *InstMIPS32Mtlo::Opcode = "mtlo";
 template <> const char *InstMIPS32Mul::Opcode = "mul";
 template <> const char *InstMIPS32Mult::Opcode = "mult";
 template <> const char *InstMIPS32Multu::Opcode = "multu";
 template <> const char *InstMIPS32Or::Opcode = "or";
 template <> const char *InstMIPS32Ori::Opcode = "ori";
+template <> const char *InstMIPS32Slt::Opcode = "slt";
+template <> const char *InstMIPS32Slti::Opcode = "slti";
+template <> const char *InstMIPS32Sltiu::Opcode = "sltiu";
 template <> const char *InstMIPS32Sltu::Opcode = "sltu";
 template <> const char *InstMIPS32Sub::Opcode = "sub";
 template <> const char *InstMIPS32Subu::Opcode = "subu";
 template <> const char *InstMIPS32Xor::Opcode = "xor";
+template <> const char *InstMIPS32Xori::Opcode = "xori";
 
 template <> void InstMIPS32Mflo::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   emitUnaryopGPRFLoHi(Opcode, this, Func);
 }
 
 template <> void InstMIPS32Mfhi::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
@@ skipping 365 matching lines @@
   }
 
   Str << "\t";
   getDest()->emit(Func);
   Str << ", ";
   getSrc(0)->emit(Func);
 }
 
 } // end of namespace MIPS32
 } // end of namespace Ice