Started skeleton for accurate GC

src/Accurate_GC/gc_printer.cpp

@@ -0,0 +1,16 @@
+/* #include "llvm/CodeGen/GCMetadataPrinter.h"
+#include "llvm/Support/Compiler.h"
+
+using namespace llvm;
+
+namespace {
+  class LLVM_LIBRARY_VISIBILITY GCPrinter : public GCMetadataPrinter {
+  public:
+    virtual void beginAssembly(AsmPrinter &AP);
+
+    virtual void finishAssembly(AsmPrinter &AP);
+  };
+
+  GCMetadataPrinterRegistry::Add<MyGCPrinter>
+  X("gc", "The bespoken garbage collector.");
+} */