[clang][bytecode] Fix InterpFrame::dump() (#170682)

We should only call getThis() and getRVOPtr() if the frame has them.

Author: tbaederr

clang/lib/AST/ByteCode/Disasm.cpp

@@ -519,8 +519,14 @@ LLVM_DUMP_METHOD void InterpFrame::dump(llvm::raw_ostream &OS,
     OS << " (" << F->getName() << ")";
   }
   OS << "\n";
-  OS.indent(Spaces) << "This: " << getThis() << "\n";
-  OS.indent(Spaces) << "RVO: " << getRVOPtr() << "\n";
+  if (hasThisPointer())
+    OS.indent(Spaces) << "This: " << getThis() << "\n";
+  else
+    OS.indent(Spaces) << "This: -\n";
+  if (Func && Func->hasRVO())
+    OS.indent(Spaces) << "RVO: " << getRVOPtr() << "\n";
+  else
+    OS.indent(Spaces) << "RVO: -\n";
   OS.indent(Spaces) << "Depth: " << Depth << "\n";
   OS.indent(Spaces) << "ArgSize: " << ArgSize << "\n";
   OS.indent(Spaces) << "Args: " << (void *)Args << "\n";