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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
//===-- BitcodeWriterPass.h - Bitcode writing pass --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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///
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/// This file provides a bitcode writing pass.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_BITCODE_BITCODEWRITERPASS_H
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#define LLVM_BITCODE_BITCODEWRITERPASS_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Module;
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class ModulePass;
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class Pass;
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class raw_ostream;
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/// Create and return a pass that writes the module to the specified
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/// ostream. Note that this pass is designed for use with the legacy pass
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/// manager.
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///
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/// If \c ShouldPreserveUseListOrder, encode use-list order so it can be
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/// reproduced when deserialized.
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///
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/// If \c EmitSummaryIndex, emit the summary index (currently for use in ThinLTO
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/// optimization).
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///
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/// If \c EmitModuleHash, compute and emit the module hash in the bitcode
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/// (currently for use in ThinLTO incremental build).
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ModulePass *createBitcodeWriterPass(raw_ostream &Str,
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bool ShouldPreserveUseListOrder = false,
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bool EmitSummaryIndex = false,
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bool EmitModuleHash = false);
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/// Check whether a pass is a BitcodeWriterPass.
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bool isBitcodeWriterPass(Pass *P);
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/// Pass for writing a module of IR out to a bitcode file.
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///
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/// Note that this is intended for use with the new pass manager. To construct
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/// a pass for the legacy pass manager, use the function above.
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class BitcodeWriterPass : public PassInfoMixin<BitcodeWriterPass> {
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raw_ostream &OS;
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bool ShouldPreserveUseListOrder;
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bool EmitSummaryIndex;
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bool EmitModuleHash;
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public:
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/// Construct a bitcode writer pass around a particular output stream.
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///
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/// If \c ShouldPreserveUseListOrder, encode use-list order so it can be
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/// reproduced when deserialized.
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///
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/// If \c EmitSummaryIndex, emit the summary index (currently
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/// for use in ThinLTO optimization).
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explicit BitcodeWriterPass(raw_ostream &OS,
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bool ShouldPreserveUseListOrder = false,
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bool EmitSummaryIndex = false,
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bool EmitModuleHash = false)
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: OS(OS), ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
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EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {}
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/// Run the bitcode writer pass, and output the module to the selected
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/// output stream.
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
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};
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}
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#endif
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