1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements lowering of CIR attributes and operations directly to 10 // LLVMIR. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "mlir/Dialect/LLVMIR/LLVMDialect.h" 15 #include "mlir/IR/DialectRegistry.h" 16 #include "mlir/Target/LLVMIR/LLVMTranslationInterface.h" 17 #include "mlir/Target/LLVMIR/ModuleTranslation.h" 18 #include "clang/CIR/Dialect/IR/CIRAttrs.h" 19 #include "clang/CIR/Dialect/IR/CIRDialect.h" 20 #include "clang/CIR/MissingFeatures.h" 21 #include "llvm/ADT/ArrayRef.h" 22 #include "llvm/IR/Constant.h" 23 #include "llvm/IR/GlobalVariable.h" 24 25 using namespace llvm; 26 27 namespace cir { 28 namespace direct { 29 30 /// Implementation of the dialect interface that converts CIR attributes to LLVM 31 /// IR metadata. 32 class CIRDialectLLVMIRTranslationInterface 33 : public mlir::LLVMTranslationDialectInterface { 34 public: 35 using LLVMTranslationDialectInterface::LLVMTranslationDialectInterface; 36 37 /// Translates the given operation to LLVM IR using the provided IR builder 38 /// and saving the state in `moduleTranslation`. convertOperation(mlir::Operation * op,llvm::IRBuilderBase & builder,mlir::LLVM::ModuleTranslation & moduleTranslation) const39 mlir::LogicalResult convertOperation( 40 mlir::Operation *op, llvm::IRBuilderBase &builder, 41 mlir::LLVM::ModuleTranslation &moduleTranslation) const final { 42 43 if (auto cirOp = llvm::dyn_cast<mlir::LLVM::ZeroOp>(op)) 44 moduleTranslation.mapValue(cirOp.getResult()) = 45 llvm::Constant::getNullValue( 46 moduleTranslation.convertType(cirOp.getType())); 47 48 return mlir::success(); 49 } 50 }; 51 registerCIRDialectTranslation(mlir::DialectRegistry & registry)52void registerCIRDialectTranslation(mlir::DialectRegistry ®istry) { 53 registry.insert<cir::CIRDialect>(); 54 registry.addExtension(+[](mlir::MLIRContext *ctx, cir::CIRDialect *dialect) { 55 dialect->addInterfaces<CIRDialectLLVMIRTranslationInterface>(); 56 }); 57 } 58 59 } // namespace direct 60 } // namespace cir 61 62 namespace mlir { registerCIRDialectTranslation(mlir::MLIRContext & context)63void registerCIRDialectTranslation(mlir::MLIRContext &context) { 64 mlir::DialectRegistry registry; 65 cir::direct::registerCIRDialectTranslation(registry); 66 context.appendDialectRegistry(registry); 67 } 68 } // namespace mlir 69