79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
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//===-- 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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