Update path to included header to DFGraph

llvm/tools/hpvm/include/BuildDFG/BuildDFG.h

@@ -16,7 +16,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Value.h"
-#include "llvm/IR/DFGraph.h"
+#include "DFGraph/DFGraph.h"
 #include "llvm/Pass.h"
 
 using namespace llvm;