Adds the x86-64 assembler.

src/IceTargetLoweringX8632Traits.h

 //===- subzero/src/IceTargetLoweringX8632Traits.h - x86-32 traits -*- C++ -*-=//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 30 matching lines @@
 
 template <> struct MachineTraits<TargetX8632> {
   //----------------------------------------------------------------------------
   //     ______  ______  __    __
   //    /\  __ \/\  ___\/\ "-./  \
   //    \ \  __ \ \___  \ \ \-./\ \
   //     \ \_\ \_\/\_____\ \_\ \ \_\
   //      \/_/\/_/\/_____/\/_/  \/_/
   //
   //----------------------------------------------------------------------------
+  static constexpr bool Is64Bit = false;
+  static constexpr bool HasPopa = true;
+  static constexpr bool HasPusha = true;
+  static constexpr bool UsesX87 = true;
+  static constexpr ::Ice::RegX8632::GPRRegister Last8BitGPR =
+      ::Ice::RegX8632::GPRRegister::Encoded_Reg_ebx;
+
   enum ScaleFactor { TIMES_1 = 0, TIMES_2 = 1, TIMES_4 = 2, TIMES_8 = 3 };
 
   using GPRRegister = ::Ice::RegX8632::GPRRegister;
   using XmmRegister = ::Ice::RegX8632::XmmRegister;
   using ByteRegister = ::Ice::RegX8632::ByteRegister;
   using X87STRegister = ::Ice::RegX8632::X87STRegister;
 
   using Cond = ::Ice::CondX86;
 
   using RegisterSet = ::Ice::RegX8632;
@@ skipping 635 matching lines @@
 
 } // end of namespace X86Internal
 
 namespace X8632 {
 using Traits = ::Ice::X86Internal::MachineTraits<TargetX8632>;
 } // end of namespace X8632
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632TRAITS_H