89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
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//===- MIRParser.h - MIR serialization format parser ------------*- 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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//
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// This MIR serialization library is currently a work in progress. It can't
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// serialize machine functions at this time.
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//
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// This file declares the functions that parse the MIR serialization format
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// files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
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#define LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
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#include "llvm/IR/Module.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <memory>
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namespace llvm {
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class Function;
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class MIRParserImpl;
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class MachineModuleInfo;
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class SMDiagnostic;
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class StringRef;
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typedef llvm::function_ref<Optional<std::string>(StringRef)>
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DataLayoutCallbackTy;
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/// This class initializes machine functions by applying the state loaded from
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/// a MIR file.
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class MIRParser {
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std::unique_ptr<MIRParserImpl> Impl;
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public:
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MIRParser(std::unique_ptr<MIRParserImpl> Impl);
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MIRParser(const MIRParser &) = delete;
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~MIRParser();
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/// Parses the optional LLVM IR module in the MIR file.
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///
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/// A new, empty module is created if the LLVM IR isn't present.
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/// \returns nullptr if a parsing error occurred.
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std::unique_ptr<Module> parseIRModule(
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DataLayoutCallbackTy DataLayoutCallback = [](StringRef) { return None; });
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/// Parses MachineFunctions in the MIR file and add them to the given
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/// MachineModuleInfo \p MMI.
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///
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/// \returns true if an error occurred.
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bool parseMachineFunctions(Module &M, MachineModuleInfo &MMI);
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};
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/// This function is the main interface to the MIR serialization format parser.
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///
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/// It reads in a MIR file and returns a MIR parser that can parse the embedded
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/// LLVM IR module and initialize the machine functions by parsing the machine
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/// function's state.
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///
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/// \param Filename - The name of the file to parse.
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/// \param Error - Error result info.
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/// \param Context - Context which will be used for the parsed LLVM IR module.
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/// \param ProcessIRFunction - function to run on every IR function or stub
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/// loaded from the MIR file.
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std::unique_ptr<MIRParser> createMIRParserFromFile(
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StringRef Filename, SMDiagnostic &Error, LLVMContext &Context,
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std::function<void(Function &)> ProcessIRFunction = nullptr);
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/// This function is another interface to the MIR serialization format parser.
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///
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/// It returns a MIR parser that works with the given memory buffer and that can
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/// parse the embedded LLVM IR module and initialize the machine functions by
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/// parsing the machine function's state.
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///
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/// \param Contents - The MemoryBuffer containing the machine level IR.
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/// \param Context - Context which will be used for the parsed LLVM IR module.
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std::unique_ptr<MIRParser>
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createMIRParser(std::unique_ptr<MemoryBuffer> Contents, LLVMContext &Context,
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std::function<void(Function &)> ProcessIRFunction = nullptr);
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} // end namespace llvm
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#endif // LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
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