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2144c5262f
When parsing .mir files immediately construct the MachineFunctions and put them into MachineModuleInfo. This allows us to get rid of the delayed construction (and delayed error reporting) through the MachineFunctionInitialzier interface. Differential Revision: https://reviews.llvm.org/D33809 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304758 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
//===- MIRParser.h - MIR serialization format parser ------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 StringRef;
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class MIRParserImpl;
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class MachineModuleInfo;
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class SMDiagnostic;
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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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/// \brief 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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std::unique_ptr<MIRParser> createMIRParserFromFile(StringRef Filename,
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SMDiagnostic &Error,
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LLVMContext &Context);
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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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} // end namespace llvm
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#endif // LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
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