Add -cc1 option '-unoptimized-cfg' to toggle using a CFG (for static analysis) that doesn't prune CFG edges.

llvm-svn: 110087
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 0ae4739..6da2319 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -786,6 +786,7 @@
   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
+  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
   Opts.EnableExperimentalInternalChecks =
     Args.hasArg(OPT_analyzer_experimental_internal_checks);