[analyzer] Add -analyzer-stats, which hooks up LLVM stats tracking.

As in http://llvm.org/docs/ProgrammersManual.html#Statistic

llvm-svn: 151570

clang/lib/Frontend/CompilerInvocation.cpp

@@ -1043,6 +1043,7 @@ static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
   Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
+  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
 
   Opts.CheckersControlList.clear();
   for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,