Author: Prakalp Srivastava

Task: Added skeleton of Hierarchical DFG Builder Pass

File changes:
  A lib/Transforms/BuildDFG/BuildDFG.cpp
  A lib/Transforms/BuildDFG/BuildDFG.exports
  A lib/Transforms/BuildDFG/CMakeLists.txt
  A lib/Transforms/BuildDFG/Makefile
-

llvm/lib/Transforms/BuildDFG/BuildDFG.cpp

+//=== BuildDFG.cpp - Implements "Hierarchical Dataflow Graph Builder Pass" ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "buildDFG"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/Function.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+STATISTIC(IntrinsicCounter, "Counts number of visc intrinsics greeted");
+
+namespace {
+  // BuildDFG - The first implementation.
+  struct BuildDFG : public FunctionPass {
+    static char ID; // Pass identification, replacement for typeid
+    BuildDFG() : FunctionPass(ID) {}
+
+    virtual bool runOnFunction(Function &F) {
+      ++IntrinsicCounter;
+      errs() << "Intrinsics: ";
+      errs().write_escaped(F.getName()) << '\n';
+      return false;
+    }
+  };
+}
+
+char BuildDFG::ID = 0;
+static RegisterPass<BuildDFG> X("buildDFG", "Hierarchical Dataflow Graph Builder Pass");
+

llvm/lib/Transforms/BuildDFG/CMakeLists.txt

+add_llvm_loadable_module( LLVMBuildDFG
+  BuildDFG.cpp
+  )

llvm/lib/Transforms/BuildDFG/Makefile

+##===- lib/Transforms/BuildDFG/Makefile -----------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../../
+LIBRARYNAME = LLVMBuildDFG
+LOADABLE_MODULE = 1
+USEDLIBS =
+
+include $(LEVEL)/Makefile.common