Subzero: Fix register encodings.

src/IceRegistersX8632.h

 //===- subzero/src/IceRegistersX8632.h - Register information ---*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 24 matching lines @@
 #define X(val, init) val init,
     REGX8632_TABLE_BOUNDS
 #undef X
   };
 
   /// An enum of GPR Registers. The enum value does match the encoding used
   /// to binary encode register operands in instructions.
   enum GPRRegister {
 #define X(val, encode, name, name16, name8, scratch, preserved, stackptr,      \
           frameptr, isI8, isInt, isFP)                                         \
-  Encoded_##val encode,
+  Encoded_##val = encode,

[Jim Stichnoth, 2015/07/14 23:36:35]

The problem here is that with the original code, you would end up with expanded
lines like:

  Encoded_Reg_xmm1 = Reg_xmm0 + 1,

when you actually want something more like:

  Encoded_Reg_xmm1 = Encoded_Reg_xmm0 + 1,

     REGX8632_GPR_TABLE
 #undef X
         Encoded_Not_GPR = -1
   };
 
   /// An enum of XMM Registers. The enum value does match the encoding used
   /// to binary encode register operands in instructions.
   enum XmmRegister {
 #define X(val, encode, name, name16, name8, scratch, preserved, stackptr,      \
           frameptr, isI8, isInt, isFP)                                         \
-  Encoded_##val encode,
+  Encoded_##val = encode,
     REGX8632_XMM_TABLE
 #undef X
         Encoded_Not_Xmm = -1
   };
 
   /// An enum of Byte Registers. The enum value does match the encoding used
   /// to binary encode register operands in instructions.
   enum ByteRegister {
 #define X(val, encode) Encoded_##val encode,
     REGX8632_BYTEREG_TABLE
@@ skipping 36 matching lines @@
 
   static inline X87STRegister getEncodedSTReg(int32_t RegNum) {
     assert(Encoded_X87ST_First <= RegNum && RegNum <= Encoded_X87ST_Last);
     return X87STRegister(RegNum);
   }
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEREGISTERSX8632_H