Add initial integrated assembler w/ some Xmm ops.

src/IceInst.h

 //===- subzero/src/IceInst.h - High-level instructions ----------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the Inst class and its target-independent
@@ skipping 90 matching lines @@
   void livenessLightweight(llvm::BitVector &Live);
   void liveness(InstNumberT InstNumber, llvm::BitVector &Live,
                 Liveness *Liveness, const CfgNode *Node);
 
   // Get the number of native instructions that this instruction
   // ultimately emits.  By default, high-level instructions don't
   // result in any native instructions, and a target-specific
   // instruction results in a single native instruction.
   virtual uint32_t getEmitInstCount() const { return 0; }
   virtual void emit(const Cfg *Func) const;
+  virtual void emitIAS(const Cfg *Func) const;
   virtual void dump(const Cfg *Func) const;
   virtual void dumpExtras(const Cfg *Func) const;
   void dumpDecorated(const Cfg *Func) const;
   void emitSources(const Cfg *Func) const;
   void dumpSources(const Cfg *Func) const;
   void dumpDest(const Cfg *Func) const;
   virtual bool isRedundantAssign() const { return false; }
 
   virtual ~Inst() {}
 
@@ skipping 645 matching lines @@
     assert(Kind >= Target);
   }
   InstTarget(const InstTarget &) LLVM_DELETED_FUNCTION;
   InstTarget &operator=(const InstTarget &) LLVM_DELETED_FUNCTION;
   virtual ~InstTarget() {}
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINST_H