Fixed a sign-extension bug in the X86 disassembler

that was causing PC-relative branch targets to be
evaluated incorrectly.  Also added support for
checking operand values to the llvm-mc tester.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103128 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-mc/Disassembler.cpp

@@ -342,6 +342,8 @@ int Disassembler::disassembleEnhanced(const std::string &TS,
                       operand, 
                       verboseEvaluator, 
                       &disassembler);
+      
+    outs() << "=" << evaluatedResult;
     
     outs() << " ";
   }