Added lower switch pass into hcc tool

hpvm/projects/hetero-c++/tools/hcc/hcc.cpp

@@ -32,8 +32,10 @@
 #include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/SimplifyCFG.h"
+#include "llvm/Transforms/Utils.h"
 #include "llvm/Transforms/Utils/SimplifyCFGOptions.h"
 
+
 #include "HPVMCGenPass.h"
 #include "HCCVerifierPass.h"
 
@@ -168,8 +170,10 @@ int main(int argc, char** argv)
   // Find the marker function in the input module
   // findAndExtractTasks(*M);
 	legacy::PassManager Passes;
+
+	Passes.add(createLowerSwitchPass());
 	Passes.add(createLoopSimplifyPass());
-  Passes.add(new HCCVerifierPass());
+    Passes.add(new HCCVerifierPass());
 	Passes.add(new HPVMCGenPass(/* Subpass configurations */ ExtractOpts));
 
     auto ftor = std::function<bool(const Function &)>(
@@ -177,8 +181,6 @@ int main(int argc, char** argv)
                 return true;
     });
 
-    //Passes.add(createCFGSimplificationPass(/*Threshold = */ 1, /*Forward Switch Cond*/ false, /*Convert Switch */ false, /* KeepLoops */  true, /* SinkCommon*/ false,
-    //           ftor));
 
     SimplifyCFGOptions SCFGOpt; // Use default setings