clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.h

//====- LowerToLLVM.h- Lowering from CIR to LLVM --------------------------===//
//
// 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 an interface for converting CIR modules to LLVM IR.
//
//===----------------------------------------------------------------------===//
#ifndef CLANG_CIR_LOWERTOLLVM_H
#define CLANG_CIR_LOWERTOLLVM_H

#include "mlir/Transforms/DialectConversion.h"
#include "clang/CIR/Dialect/IR/CIRDialect.h"

namespace cir {

namespace direct {

class CIRToLLVMGlobalOpLowering
    : public mlir::OpConversionPattern<cir::GlobalOp> {
  const mlir::DataLayout &dataLayout;

public:
  CIRToLLVMGlobalOpLowering(const mlir::TypeConverter &typeConverter,
                            mlir::MLIRContext *context,
                            const mlir::DataLayout &dataLayout)
      : OpConversionPattern(typeConverter, context), dataLayout(dataLayout) {
    setHasBoundedRewriteRecursion();
  }

  mlir::LogicalResult
  matchAndRewrite(cir::GlobalOp op, OpAdaptor adaptor,
                  mlir::ConversionPatternRewriter &rewriter) const override;

private:
  bool attrRequiresRegionInitialization(mlir::Attribute attr) const;

  mlir::LogicalResult matchAndRewriteRegionInitializedGlobal(
      cir::GlobalOp op, mlir::Attribute init,
      mlir::ConversionPatternRewriter &rewriter) const;

  void setupRegionInitializedLLVMGlobalOp(
      cir::GlobalOp op, mlir::ConversionPatternRewriter &rewriter) const;
};

} // namespace direct
} // namespace cir

#endif // CLANG_CIR_LOWERTOLLVM_H