1 files changed, 85 insertions, 0 deletions
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriterPass.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriterPass.cpp
new file mode 100644
index 000000000000..6796cf8cee54
--- /dev/null
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriterPass.cpp
@@ -0,0 +1,85 @@
+//===- BitcodeWriterPass.cpp - Bitcode writing pass -----------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// BitcodeWriterPass implementation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Bitcode/BitcodeWriterPass.h"
+#include "llvm/Analysis/ModuleSummaryAnalysis.h"
+#include "llvm/Bitcode/BitcodeWriter.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/PassManager.h"
+#include "llvm/Pass.h"
+using namespace llvm;
+
+PreservedAnalyses BitcodeWriterPass::run(Module &M, ModuleAnalysisManager &AM) {
+  const ModuleSummaryIndex *Index =
+      EmitSummaryIndex ? &(AM.getResult<ModuleSummaryIndexAnalysis>(M))
+                       : nullptr;
+  WriteBitcodeToFile(M, OS, ShouldPreserveUseListOrder, Index, EmitModuleHash);
+  return PreservedAnalyses::all();
+}
+
+namespace {
+  class WriteBitcodePass : public ModulePass {
+    raw_ostream &OS; // raw_ostream to print on
+    bool ShouldPreserveUseListOrder;
+    bool EmitSummaryIndex;
+    bool EmitModuleHash;
+
+  public:
+    static char ID; // Pass identification, replacement for typeid
+    WriteBitcodePass() : ModulePass(ID), OS(dbgs()) {
+      initializeWriteBitcodePassPass(*PassRegistry::getPassRegistry());
+    }
+
+    explicit WriteBitcodePass(raw_ostream &o, bool ShouldPreserveUseListOrder,
+                              bool EmitSummaryIndex, bool EmitModuleHash)
+        : ModulePass(ID), OS(o),
+          ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
+          EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {
+      initializeWriteBitcodePassPass(*PassRegistry::getPassRegistry());
+    }
+
+    StringRef getPassName() const override { return "Bitcode Writer"; }
+
+    bool runOnModule(Module &M) override {
+      const ModuleSummaryIndex *Index =
+          EmitSummaryIndex
+              ? &(getAnalysis<ModuleSummaryIndexWrapperPass>().getIndex())
+              : nullptr;
+      WriteBitcodeToFile(M, OS, ShouldPreserveUseListOrder, Index,
+                         EmitModuleHash);
+      return false;
+    }
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesAll();
+      if (EmitSummaryIndex)
+        AU.addRequired<ModuleSummaryIndexWrapperPass>();
+    }
+  };
+}
+
+char WriteBitcodePass::ID = 0;
+INITIALIZE_PASS_BEGIN(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
+                      true)
+INITIALIZE_PASS_DEPENDENCY(ModuleSummaryIndexWrapperPass)
+INITIALIZE_PASS_END(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
+                    true)
+
+ModulePass *llvm::createBitcodeWriterPass(raw_ostream &Str,
+                                          bool ShouldPreserveUseListOrder,
+                                          bool EmitSummaryIndex, bool EmitModuleHash) {
+  return new WriteBitcodePass(Str, ShouldPreserveUseListOrder,
+                              EmitSummaryIndex, EmitModuleHash);
+}
+
+bool llvm::isBitcodeWriterPass(Pass *P) {
+  return P->getPassID() == (llvm::AnalysisID)&WriteBitcodePass::ID;
+}