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diff --git a/clang-r344140b/include/llvm/Analysis/LegacyDivergenceAnalysis.h b/clang-r344140b/include/llvm/Analysis/LegacyDivergenceAnalysis.h
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+++ b/clang-r344140b/include/llvm/Analysis/LegacyDivergenceAnalysis.h
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+//===- llvm/Analysis/LegacyDivergenceAnalysis.h - KernelDivergence Analysis -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// The kernel divergence analysis is an LLVM pass which can be used to find out
+// if a branch instruction in a GPU program (kernel) is divergent or not. It can help
+// branch optimizations such as jump threading and loop unswitching to make
+// better decisions.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_ANALYSIS_LEGACY_DIVERGENCE_ANALYSIS_H
+#define LLVM_ANALYSIS_LEGACY_DIVERGENCE_ANALYSIS_H
+
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/IR/Function.h"
+#include "llvm/Pass.h"
+
+namespace llvm {
+class Value;
+class LegacyDivergenceAnalysis : public FunctionPass {
+public:
+  static char ID;
+
+  LegacyDivergenceAnalysis() : FunctionPass(ID) {
+    initializeLegacyDivergenceAnalysisPass(*PassRegistry::getPassRegistry());
+  }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+  bool runOnFunction(Function &F) override;
+
+  // Print all divergent branches in the function.
+  void print(raw_ostream &OS, const Module *) const override;
+
+  // Returns true if V is divergent at its definition.
+  //
+  // Even if this function returns false, V may still be divergent when used
+  // in a different basic block.
+  bool isDivergent(const Value *V) const { return DivergentValues.count(V); }
+
+  // Returns true if V is uniform/non-divergent.
+  //
+  // Even if this function returns true, V may still be divergent when used
+  // in a different basic block.
+  bool isUniform(const Value *V) const { return !isDivergent(V); }
+
+  // Keep the analysis results uptodate by removing an erased value.
+  void removeValue(const Value *V) { DivergentValues.erase(V); }
+
+private:
+  // Stores all divergent values.
+  DenseSet<const Value *> DivergentValues;
+};
+} // End llvm namespace
+
+#endif //LLVM_ANALYSIS_LEGACY_DIVERGENCE_ANALYSIS_H