For disassembly when adding a symbolic operand that is a C++

symbol name, also put the human readable name in a comment.

Also fix a bug in LLVMDisasmInstruction() that was not flushing
the raw_svector_ostream for the disassembled instruction string
before copying it to the output buffer that was causing truncation
of the output.

rdar://10173828


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198441 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCDisassembler/Disassembler.cpp

@@ -298,6 +298,7 @@ size_t LLVMDisasmInstruction(LLVMDisasmContextRef DCR, uint8_t *Bytes,
       emitLatency(DC, Inst);
 
     emitComments(DC, FormattedOS);
+    OS.flush();
 
     assert(OutStringSize != 0 && "Output buffer cannot be zero size");
     size_t OutputSize = std::min(OutStringSize-1, InsnStr.size());