TypeToLLVM.h

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//===- TypeToLLVM.h - Translate types from MLIR to LLVM --*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the type translation function going from MLIR LLVM dialect
// to LLVM IR and back.
//
//===----------------------------------------------------------------------===//
 
#ifndef MLIR_TARGET_LLVMIR_TYPETOLLVM_H
#define MLIR_TARGET_LLVMIR_TYPETOLLVM_H
 
#include <memory>
 
namespace llvm {
class DataLayout;
class LLVMContext;
class Type;
} // namespace llvm
 
namespace mlir {
 
class Type;
class MLIRContext;
 
namespace LLVM {
 
namespace detail {
class TypeToLLVMIRTranslatorImpl;
} // namespace detail
 
/// Utility class to translate MLIR LLVM dialect types to LLVM IR. Stores the
/// translation state, in particular any identified structure types that can be
/// reused in further translation.
class TypeToLLVMIRTranslator {
public:
  TypeToLLVMIRTranslator(llvm::LLVMContext &context);
  ~TypeToLLVMIRTranslator();
 
  /// Returns the preferred alignment for the type given the data layout. Note
  /// that this will perform type conversion and store its results for future
  /// uses.
  // TODO: this should be removed when MLIR has proper data layout.
  unsigned getPreferredAlignment(Type type, const llvm::DataLayout &layout);
 
  /// Translates the given MLIR LLVM dialect type to LLVM IR.
  llvm::Type *translateType(Type type);
 
private:
  /// Private implementation.
  std::unique_ptr<detail::TypeToLLVMIRTranslatorImpl> impl;
};
 
} // namespace LLVM
} // namespace mlir
 
#endif // MLIR_TARGET_LLVMIR_TYPETOLLVM_H