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diff --git a/contrib/llvm/include/llvm/Transforms/Utils/AddDiscriminators.h b/contrib/llvm/include/llvm/Transforms/Utils/AddDiscriminators.h
new file mode 100644
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+++ b/contrib/llvm/include/llvm/Transforms/Utils/AddDiscriminators.h
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+//===- AddDiscriminators.h -------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This pass adds DWARF discriminators to the IR. Path discriminators are used
+// to decide what CFG path was taken inside sub-graphs whose instructions share
+// the same line and column number information.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_ADDDISCRIMINATORS_H
+#define LLVM_TRANSFORMS_UTILS_ADDDISCRIMINATORS_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+class AddDiscriminatorsPass : public PassInfoMixin<AddDiscriminatorsPass> {
+public:
+  PreservedAnalyses run(Function &F, AnalysisManager<Function> &AM);
+};
+} // end namespace llvm
+
+#endif // LLVM_TRANSFORMS_UTILS_ADDDISCRIMINATORS_H