Subzero: Make -reg-use and -reg-exclude specific to register class.

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 498 matching lines @@
         (*RegisterAliases)[Entry.Val].set(Alias);
       }
       (*RegisterAliases)[Entry.Val].set(Entry.Val);
     }
 
     (*TypeToRegisterSet)[RC_void] = InvalidRegisters;
     (*TypeToRegisterSet)[RC_i1] = IntegerRegistersI8;
     (*TypeToRegisterSet)[RC_i8] = IntegerRegistersI8;
     (*TypeToRegisterSet)[RC_i16] = IntegerRegistersI16;
     (*TypeToRegisterSet)[RC_i32] = IntegerRegistersI32;
-    (*TypeToRegisterSet)[RC_i64] = IntegerRegistersI32;
+    (*TypeToRegisterSet)[RC_i64] = InvalidRegisters;
     (*TypeToRegisterSet)[RC_f32] = FloatRegisters;
     (*TypeToRegisterSet)[RC_f64] = FloatRegisters;
     (*TypeToRegisterSet)[RC_v4i1] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v8i1] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v16i1] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v16i8] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v8i16] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v4i32] = VectorRegisters;
     (*TypeToRegisterSet)[RC_v4f32] = VectorRegisters;
     (*TypeToRegisterSet)[RCX86_Is64To8] = Trunc64To8Registers;
@@ skipping 458 matching lines @@
 
   static uint8_t InstSegmentPrefixes[];
 };
 
 using Traits = ::Ice::X8632::TargetX8632Traits;
 } // end of namespace X8632
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632TRAITS_H