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diff --git a/clang-r353983/include/llvm/Analysis/RegionPrinter.h b/clang-r353983/include/llvm/Analysis/RegionPrinter.h
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+//===-- RegionPrinter.h - Region printer external interface -----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines external functions that can be called to explicitly
+// instantiate the region printer.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_REGIONPRINTER_H
+#define LLVM_ANALYSIS_REGIONPRINTER_H
+
+namespace llvm {
+  class FunctionPass;
+  class Function;
+  class RegionInfo;
+
+  FunctionPass *createRegionViewerPass();
+  FunctionPass *createRegionOnlyViewerPass();
+  FunctionPass *createRegionPrinterPass();
+  FunctionPass *createRegionOnlyPrinterPass();
+
+#ifndef NDEBUG
+  /// Open a viewer to display the GraphViz vizualization of the analysis
+  /// result.
+  ///
+  /// Practical to call in the debugger.
+  /// Includes the instructions in each BasicBlock.
+  ///
+  /// @param RI The analysis to display.
+  void viewRegion(llvm::RegionInfo *RI);
+
+  /// Analyze the regions of a function and open its GraphViz
+  /// visualization in a viewer.
+  ///
+  /// Useful to call in the debugger.
+  /// Includes the instructions in each BasicBlock.
+  /// The result of a new analysis may differ from the RegionInfo the pass
+  /// manager currently holds.
+  ///
+  /// @param F Function to analyze.
+  void viewRegion(const llvm::Function *F);
+
+  /// Open a viewer to display the GraphViz vizualization of the analysis
+  /// result.
+  ///
+  /// Useful to call in the debugger.
+  /// Shows only the BasicBlock names without their instructions.
+  ///
+  /// @param RI The analysis to display.
+  void viewRegionOnly(llvm::RegionInfo *RI);
+
+  /// Analyze the regions of a function and open its GraphViz
+  /// visualization in a viewer.
+  ///
+  /// Useful to call in the debugger.
+  /// Shows only the BasicBlock names without their instructions.
+  /// The result of a new analysis may differ from the RegionInfo the pass
+  /// manager currently holds.
+  ///
+  /// @param F Function to analyze.
+  void viewRegionOnly(const llvm::Function *F);
+#endif
+} // End llvm namespace
+
+#endif