| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file implements lowering of CIR attributes and operations directly to |
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| 10 | // LLVMIR. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #include "mlir/Dialect/LLVMIR/LLVMDialect.h" |
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| 15 | #include "mlir/IR/DialectRegistry.h" |
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| 16 | #include "mlir/Target/LLVMIR/LLVMTranslationInterface.h" |
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| 17 | #include "mlir/Target/LLVMIR/ModuleTranslation.h" |
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| 18 | #include "clang/CIR/Dialect/IR/CIRAttrs.h" |
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| 19 | #include "clang/CIR/Dialect/IR/CIRDialect.h" |
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| 20 | #include "clang/CIR/MissingFeatures.h" |
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| 21 | #include "llvm/ADT/ArrayRef.h" |
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| 22 | #include "llvm/IR/Constant.h" |
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| 23 | #include "llvm/IR/GlobalVariable.h" |
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| 24 | |
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| 25 | using namespace llvm; |
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| 26 | |
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| 27 | namespace cir { |
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| 28 | namespace direct { |
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| 29 | |
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| 30 | /// Implementation of the dialect interface that converts CIR attributes to LLVM |
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| 31 | /// IR metadata. |
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| 32 | class CIRDialectLLVMIRTranslationInterface |
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| 33 | : public mlir::LLVMTranslationDialectInterface { |
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| 34 | public: |
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| 35 | using LLVMTranslationDialectInterface::LLVMTranslationDialectInterface; |
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| 36 | |
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| 37 | /// Translates the given operation to LLVM IR using the provided IR builder |
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| 38 | /// and saving the state in `moduleTranslation`. |
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| 39 | mlir::LogicalResult convertOperation( |
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| 40 | mlir::Operation *op, llvm::IRBuilderBase &builder, |
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| 41 | mlir::LLVM::ModuleTranslation &moduleTranslation) const final { |
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| 42 | |
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| 43 | if (auto cirOp = llvm::dyn_cast<mlir::LLVM::ZeroOp>(op)) |
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| 44 | moduleTranslation.mapValue(cirOp.getResult()) = |
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| 45 | llvm::Constant::getNullValue( |
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| 46 | Ty: moduleTranslation.convertType(cirOp.getType())); |
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| 47 | |
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| 48 | return mlir::success(); |
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| 49 | } |
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| 50 | }; |
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| 51 | |
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| 52 | void registerCIRDialectTranslation(mlir::DialectRegistry ®istry) { |
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| 53 | registry.insert<cir::CIRDialect>(); |
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| 54 | registry.addExtension(+[](mlir::MLIRContext *ctx, cir::CIRDialect *dialect) { |
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| 55 | dialect->addInterfaces<CIRDialectLLVMIRTranslationInterface>(); |
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| 56 | }); |
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| 57 | } |
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| 58 | |
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| 59 | } // namespace direct |
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| 60 | } // namespace cir |
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| 61 | |
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| 62 | namespace mlir { |
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| 63 | void registerCIRDialectTranslation(mlir::MLIRContext &context) { |
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| 64 | mlir::DialectRegistry registry; |
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| 65 | cir::direct::registerCIRDialectTranslation(registry); |
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| 66 | context.appendDialectRegistry(registry); |
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| 67 | } |
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| 68 | } // namespace mlir |
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| 69 | |
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