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a15d888abf
This commit connects the machine function analysis pass (which creates machine functions) to the MIR parser, which will initialize the machine functions with the state from the MIR file and reconstruct the machine IR. This commit introduces a new interface called 'MachineFunctionInitializer', which can be used to provide custom initialization for the machine functions. This commit also introduces a new diagnostic class called 'DiagnosticInfoMIRParser' which is used for MIR parsing errors. This commit modifies the default diagnostic handling in LLVMContext - now the the diagnostics are printed directly into llvm::errs() so that the MIR parsing errors can be printed with colours. Reviewers: Justin Bogner Differential Revision: http://reviews.llvm.org/D9928 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239753 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
//===- MIRParser.h - MIR serialization format parser ----------------------===//
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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/ADT/StringRef.h"
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#include "llvm/CodeGen/MachineFunctionInitializer.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 MIRParserImpl;
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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 : public MachineFunctionInitializer {
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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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/// Parse the optional LLVM IR module that's embedded 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 null if a parsing error occurred.
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std::unique_ptr<Module> parseLLVMModule();
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/// Initialize the machine function to the state that's described in the MIR
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/// file.
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///
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/// Return true if error occurred.
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bool initializeMachineFunction(MachineFunction &MF) override;
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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
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