Handle "Mov" which is mov, movss, movsd, and used for nacl.read.tp.

src/IceOperand.h

 //===- subzero/src/IceOperand.h - High-level operands -----------*- 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 Operand class and its target-independent
 // subclasses.  The main classes are Variable, which represents an
 // LLVM variable that is either register- or stack-allocated, and the
 // Constant hierarchy, which represents integer, floating-point,
 // and/or symbolic constants.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICEOPERAND_H
 #define SUBZERO_SRC_ICEOPERAND_H
 
+#include "IceCfg.h"
 #include "IceDefs.h"
+#include "IceGlobalContext.h"

[jvoung (off chromium), 2014/10/10 00:55:49]

From the include "IceOperand.h" in assembler_ia32.h. Since this file does:
Func->getContext()->getStrDump();

 #include "IceTypes.h"
 
 namespace Ice {
 
 class Operand {
 public:
   static const size_t MaxTargetKinds = 10;
   enum OperandKind {
     kConst_Base,
     kConstInteger32,
@@ skipping 168 matching lines @@
 // ConstantRelocatable represents a symbolic constant combined with
 // a fixed offset.
 class ConstantRelocatable : public Constant {
 public:
   static ConstantRelocatable *create(GlobalContext *Ctx, Type Ty,
                                      const RelocatableTuple &Tuple,
                                      uint32_t PoolEntryID) {
     return new (Ctx->allocate<ConstantRelocatable>()) ConstantRelocatable(
         Ty, Tuple.Offset, Tuple.Name, Tuple.SuppressMangling, PoolEntryID);
   }
+  // TODO(jvoung): offset should only be int32_t, since we are ILP32.
   int64_t getOffset() const { return Offset; }
   IceString getName() const { return Name; }
   void setSuppressMangling(bool Value) { SuppressMangling = Value; }
   bool getSuppressMangling() const { return SuppressMangling; }
   using Constant::emit;
   using Constant::dump;
   void emit(GlobalContext *Ctx) const override;
   void dump(const Cfg *Func, Ostream &Str) const override;
 
   static bool classof(const Operand *Operand) {
@@ skipping 359 matching lines @@
   const Cfg *Func;
   std::vector<VariableTracking> Metadata;
   const static InstDefList NoDefinitions;
   VariablesMetadata(const VariablesMetadata &) = delete;
   VariablesMetadata &operator=(const VariablesMetadata &) = delete;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEOPERAND_H