Adds the x86-64 assembler.

src/IceTargetLoweringX8664.def

Index: src/IceTargetLoweringX8664.def
diff --git a/src/IceTargetLoweringX8632.def b/src/IceTargetLoweringX8664.def
similarity index 85%
copy from src/IceTargetLoweringX8632.def
copy to src/IceTargetLoweringX8664.def
index 543b153e770b349e3121986d578a0f9922e6f996..8ee61d06e13edca5660908b09d5012e2edc4041c 100644
--- a/src/IceTargetLoweringX8632.def
+++ b/src/IceTargetLoweringX8664.def
@@ -1,4 +1,4 @@
-//===- subzero/src/IceTargetLoweringX8632.def - x86-32 X-macros -*- C++ -*-===//
+//===- subzero/src/IceTargetLoweringX8664.def - x86-64 X-macros -*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
@@ -7,15 +7,15 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines certain patterns for lowering to x86-32 target
+// This file defines certain patterns for lowering to x86-64 target
 // instructions, in the form of x-macros.
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef SUBZERO_SRC_ICETARGETLOWERINGX8632_DEF
-#define SUBZERO_SRC_ICETARGETLOWERINGX8632_DEF
+#ifndef SUBZERO_SRC_ICETARGETLOWERINGX8664_DEF
+#define SUBZERO_SRC_ICETARGETLOWERINGX8664_DEF
 
-#define FCMPX8632_TABLE                                              \
+#define FCMPX8664_TABLE                                              \
   /*       <---- scalar comparison ---->  <- vector comparison -> */ \
   /* val,  dflt, swap, C1,      C2,       swap,  predicate        */ \
   X(False, 0,    0,    Br_None, Br_None,  0,     Cmpps_Invalid)      \
@@ -36,7 +36,7 @@
   X(True,  1,    0,    Br_None, Br_None,  0,     Cmpps_Invalid)      \
 //#define X(val, dflt, swapS, C1, C2, swapV, pred)
 
-#define ICMPX8632_TABLE                     \
+#define ICMPX8664_TABLE                     \
   /* val, C_32,  C1_64,   C2_64,   C3_64 */ \
   X(Eq,   Br_e,  Br_None, Br_ne,   Br_e)    \
   X(Ne,   Br_ne, Br_ne,   Br_None, Br_ne)   \
@@ -50,4 +50,4 @@
   X(Sle,  Br_le, Br_l,    Br_g,    Br_be)   \
 //#define X(val, C_32, C1_64, C2_64, C3_64)
 
-#endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_DEF
+#endif // SUBZERO_SRC_ICETARGETLOWERINGX8664_DEF