Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 78 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Bitcode/BitcodeWriterPass.h b/clang-r353983/include/llvm/Bitcode/BitcodeWriterPass.h
new file mode 100644
index 00000000..1773d1b9
--- /dev/null
+++ b/clang-r353983/include/llvm/Bitcode/BitcodeWriterPass.h
@@ -0,0 +1,78 @@
+//===-- BitcodeWriterPass.h - Bitcode writing pass --------------*- 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
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file provides a bitcode writing pass.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BITCODE_BITCODEWRITERPASS_H
+#define LLVM_BITCODE_BITCODEWRITERPASS_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+class Module;
+class ModulePass;
+class Pass;
+class raw_ostream;
+
+/// 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.
+///
+/// If \c ShouldPreserveUseListOrder, encode use-list order so it can be
+/// reproduced when deserialized.
+///
+/// If \c EmitSummaryIndex, emit the summary index (currently for use in ThinLTO
+/// optimization).
+///
+/// If \c EmitModuleHash, compute and emit the module hash in the bitcode
+/// (currently for use in ThinLTO incremental build).
+ModulePass *createBitcodeWriterPass(raw_ostream &Str,
+                                    bool ShouldPreserveUseListOrder = false,
+                                    bool EmitSummaryIndex = false,
+                                    bool EmitModuleHash = false);
+
+/// Check whether a pass is a BitcodeWriterPass.
+bool isBitcodeWriterPass(Pass *P);
+
+/// 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 : public PassInfoMixin<BitcodeWriterPass> {
+  raw_ostream &OS;
+  bool ShouldPreserveUseListOrder;
+  bool EmitSummaryIndex;
+  bool EmitModuleHash;
+
+public:
+  /// Construct a bitcode writer pass around a particular output stream.
+  ///
+  /// If \c ShouldPreserveUseListOrder, encode use-list order so it can be
+  /// reproduced when deserialized.
+  ///
+  /// If \c EmitSummaryIndex, emit the summary index (currently
+  /// for use in ThinLTO optimization).
+  explicit BitcodeWriterPass(raw_ostream &OS,
+                             bool ShouldPreserveUseListOrder = false,
+                             bool EmitSummaryIndex = false,
+                             bool EmitModuleHash = false)
+      : OS(OS), ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
+  EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {}
+
+  /// Run the bitcode writer pass, and output the module to the selected
+  /// output stream.
+  PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
+};
+
+}
+
+#endif