Add a check for side effect-free options (specified only in the OptionList).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51759 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/llvmc.cpp b/tools/llvmc2/llvmc.cpp
index 9580717..ba2d70a 100644
--- a/tools/llvmc2/llvmc.cpp
+++ b/tools/llvmc2/llvmc.cpp
@@ -32,6 +32,9 @@
 // Built-in command-line options.
 // External linkage here is intentional.
 
+// TOFIX: Add a --keep-temps option.
+// TOFIX: Write a 'driver driver' (easier to do as a separate
+// executable that drives llvmc2 proper).
 cl::list<std::string> InputFilenames(cl::Positional, cl::desc("<input file>"),
                                      cl::ZeroOrMore);
 cl::opt<std::string> OutputFilename("o", cl::desc("Output file name"),