Add missing header for DebugIR

- missed svn add...

llvm-svn: 185194

lib/Transforms/Instrumentation/DebugIR.h

@@ -0,0 +1,99 @@
+//===- llvm/Transforms/Instrumentation/DebugIR.h - Interface ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the interface of the DebugIR pass. For most users,
+// including Instrumentation.h and calling createDebugIRPass() is sufficient and
+// there is no need to include this file.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_DEBUGIR_H
+#define LLVM_TRANSFORMS_INSTRUMENTATION_DEBUGIR_H
+
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Pass.h"
+
+namespace llvm {
+
+class DebugIR : public llvm::ModulePass {
+  /// If true, write a source file to disk.
+  bool WriteSourceToDisk;
+
+  /// Hide certain (non-essential) debug information (only relevant if
+  /// createSource is true.
+  bool HideDebugIntrinsics;
+  bool HideDebugMetadata;
+
+  /// The location of the source file.
+  std::string Directory;
+  std::string Filename;
+
+  /// True if a temporary file name was generated.
+  bool GeneratedPath;
+
+  /// True if the file name was read from the Module.
+  bool ParsedPath;
+
+public:
+  static char ID;
+
+  const char *getPassName() const { return "DebugIR"; }
+
+  /// Generate a file on disk to be displayed in a debugger. If Filename and
+  /// Directory are empty, a temporary path will be generated.
+  DebugIR(bool HideDebugIntrinsics, bool HideDebugMetadata,
+          llvm::StringRef Directory, llvm::StringRef Filename)
+      : ModulePass(ID), WriteSourceToDisk(true),
+        HideDebugIntrinsics(HideDebugIntrinsics),
+        HideDebugMetadata(HideDebugMetadata), Directory(Directory),
+        Filename(Filename), GeneratedPath(false), ParsedPath(false) {}
+
+  /// Modify input in-place; do not generate additional files, and do not hide
+  /// any debug intrinsics/metadata that might be present.
+  DebugIR()
+      : ModulePass(ID), WriteSourceToDisk(false), HideDebugIntrinsics(false),
+        HideDebugMetadata(false), GeneratedPath(false), ParsedPath(false) {}
+
+  /// Run pass on M and set Path to the source file path in the output module.
+  bool runOnModule(llvm::Module &M, std::string &Path);
+  bool runOnModule(llvm::Module &M);
+
+private:
+
+  /// Returns the concatenated Directory + Filename, without error checking
+  std::string getPath();
+
+  /// Attempts to read source information from debug information in M, and if
+  /// that fails, from M's identifier. Returns true on success, false otherwise.
+  bool getSourceInfo(const llvm::Module &M);
+
+  /// Replace the extension of Filename with NewExtension, and return true if
+  /// successful. Return false if extension could not be found or Filename is
+  /// empty.
+  bool updateExtension(llvm::StringRef NewExtension);
+
+  /// Generate a temporary filename and open an fd
+  void generateFilename(llvm::OwningPtr<int> &fd);
+
+  /// Creates DWARF CU/Subroutine metadata
+  void createDebugInfo(llvm::Module &M,
+                       llvm::OwningPtr<llvm::Module> &DisplayM);
+
+  /// Returns true if either Directory or Filename is missing, false otherwise.
+  bool isMissingPath();
+
+  /// Write M to disk, optionally passing in an fd to an open file which is
+  /// closed by this function after writing. If no fd is specified, a new file
+  /// is opened, written, and closed.
+  void writeDebugBitcode(const llvm::Module *M, int *fd = 0);
+};
+
+} // llvm namespace
+
+#endif // LLVM_TRANSFORMS_INSTRUMENTATION_DEBUGIR_H