From e2dc71d312fb9e46ad89429bade1f221ea8e67ff Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Mon, 13 Jan 2014 07:38:24 +0000
Subject: [PM] Wire up support for writing bitcode with new PM.

This moves the old pass creation functionality to its own header and
updates the callers of that routine. Then it adds a new PM supporting
bitcode writer to the header file, and wires that up in the opt tool.
A test is added that round-trips code into bitcode and back out using
the new pass manager.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199078 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Bitcode/BitcodeWriterPass.h | 51 ++++++++++++++++++++++++++++++++
 include/llvm/Bitcode/ReaderWriter.h      |  4 ---
 2 files changed, 51 insertions(+), 4 deletions(-)
 create mode 100644 include/llvm/Bitcode/BitcodeWriterPass.h

(limited to 'include/llvm')

diff --git a/include/llvm/Bitcode/BitcodeWriterPass.h b/include/llvm/Bitcode/BitcodeWriterPass.h
new file mode 100644
index 0000000000..e423954d52
--- /dev/null
+++ b/include/llvm/Bitcode/BitcodeWriterPass.h
@@ -0,0 +1,51 @@
+//===-- BitcodeWriterPass.h - Bitcode writing pass --------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file provides a bitcode writing pass.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BITCODE_BITCODE_WRITER_PASS_H
+#define LLVM_BITCODE_BITCODE_WRITER_PASS_H
+
+#include "llvm/ADT/StringRef.h"
+
+namespace llvm {
+class Module;
+class ModulePass;
+class raw_ostream;
+class PreservedAnalyses;
+
+/// \brief Create and return a pass that writes the module to the specified
+/// ostream. Note that this pass is designed for use with the legacy pass
+/// manager.
+ModulePass *createBitcodeWriterPass(raw_ostream &Str);
+
+/// \brief Pass for writing a module of IR out to a bitcode file.
+///
+/// Note that this is intended for use with the new pass manager. To construct
+/// a pass for the legacy pass manager, use the function above.
+class BitcodeWriterPass {
+  raw_ostream &OS;
+
+public:
+  /// \brief Construct a bitcode writer pass around a particular output stream.
+  explicit BitcodeWriterPass(raw_ostream &OS) : OS(OS) {}
+
+  /// \brief Run the bitcode writer pass, and output the module to the selected
+  /// \brief output stream.
+  PreservedAnalyses run(Module *M);
+
+  static StringRef name() { return "BitcodeWriterPass"; }
+};
+
+}
+
+#endif
diff --git a/include/llvm/Bitcode/ReaderWriter.h b/include/llvm/Bitcode/ReaderWriter.h
index 78f40ca17e..134d49a122 100644
--- a/include/llvm/Bitcode/ReaderWriter.h
+++ b/include/llvm/Bitcode/ReaderWriter.h
@@ -63,10 +63,6 @@ namespace llvm {
   /// should be in "binary" mode.
   void WriteBitcodeToFile(const Module *M, raw_ostream &Out);
 
-  /// createBitcodeWriterPass - Create and return a pass that writes the module
-  /// to the specified ostream.
-  ModulePass *createBitcodeWriterPass(raw_ostream &Str);
-
 
   /// isBitcodeWrapper - Return true if the given bytes are the magic bytes
   /// for an LLVM IR bitcode wrapper.
-- 
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