Convert llvmc2 plugins to use llvm/Support/Registry.h machinery.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56467 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/llvmc.cpp b/tools/llvmc2/llvmc.cpp
index 592a133..f3a1e57 100644
--- a/tools/llvmc2/llvmc.cpp
+++ b/tools/llvmc2/llvmc.cpp
@@ -85,8 +85,9 @@
     cl::ParseCommandLineOptions
       (argc, argv, "LLVM Compiler Driver (Work In Progress)", true);
 
-    PopulateLanguageMap(langMap);
-    PopulateCompilationGraph(graph);
+    PluginLoader Plugins;
+    Plugins.PopulateLanguageMap(langMap);
+    Plugins.PopulateCompilationGraph(graph);
 
     if (WriteGraph) {
       graph.writeGraph();