1//===- LLVMIRToNVVMTranslation.cpp - Translate LLVM IR to NVVM dialect ----===//
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 a translation between LLVM IR and the MLIR NVVM dialect.
10//
11//===----------------------------------------------------------------------===//
12
13#include "mlir/Target/LLVMIR/Dialect/NVVM/LLVMIRToNVVMTranslation.h"
14#include "mlir/Dialect/LLVMIR/NVVMDialect.h"
15#include "mlir/Target/LLVMIR/ModuleImport.h"
16
17#include "llvm/IR/IntrinsicsNVPTX.h"
18
19using namespace mlir;
20using namespace mlir::NVVM;
21
22/// Returns true if the LLVM IR intrinsic is convertible to an MLIR NVVM dialect
23/// intrinsic. Returns false otherwise.
24static bool isConvertibleIntrinsic(llvm::Intrinsic::ID id) {
25 static const DenseSet<unsigned> convertibleIntrinsics = {
26#include "mlir/Dialect/LLVMIR/NVVMConvertibleLLVMIRIntrinsics.inc"
27 };
28 return convertibleIntrinsics.contains(id);
29}
30
31/// Returns the list of LLVM IR intrinsic identifiers that are convertible to
32/// MLIR NVVM dialect intrinsics.
33static ArrayRef<unsigned> getSupportedIntrinsicsImpl() {
34 static const SmallVector<unsigned> convertibleIntrinsics = {
35#include "mlir/Dialect/LLVMIR/NVVMConvertibleLLVMIRIntrinsics.inc"
36 };
37 return convertibleIntrinsics;
38}
39
40/// Converts the LLVM intrinsic to an MLIR NVVM dialect operation if a
41/// conversion exits. Returns failure otherwise.
42static LogicalResult convertIntrinsicImpl(OpBuilder &odsBuilder,
43 llvm::CallInst *inst,
44 LLVM::ModuleImport &moduleImport) {
45 llvm::Intrinsic::ID intrinsicID = inst->getIntrinsicID();
46
47 // Check if the intrinsic is convertible to an MLIR dialect counterpart and
48 // copy the arguments to an an LLVM operands array reference for conversion.
49 if (isConvertibleIntrinsic(id: intrinsicID)) {
50 SmallVector<llvm::Value *> args(inst->args());
51 ArrayRef<llvm::Value *> llvmOperands(args);
52#include "mlir/Dialect/LLVMIR/NVVMFromLLVMIRConversions.inc"
53 }
54
55 return failure();
56}
57
58namespace {
59
60/// Implementation of the dialect interface that converts operations belonging
61/// to the NVVM dialect.
62class NVVMDialectLLVMIRImportInterface : public LLVMImportDialectInterface {
63public:
64 using LLVMImportDialectInterface::LLVMImportDialectInterface;
65
66 /// Converts the LLVM intrinsic to an MLIR NVVM dialect operation if a
67 /// conversion exits. Returns failure otherwise.
68 LogicalResult convertIntrinsic(OpBuilder &builder, llvm::CallInst *inst,
69 LLVM::ModuleImport &moduleImport) const final {
70 return convertIntrinsicImpl(odsBuilder&: builder, inst, moduleImport);
71 }
72
73 /// Returns the list of LLVM IR intrinsic identifiers that are convertible to
74 /// MLIR NVVM dialect intrinsics.
75 ArrayRef<unsigned> getSupportedIntrinsics() const final {
76 return getSupportedIntrinsicsImpl();
77 }
78};
79
80} // namespace
81
82void mlir::registerNVVMDialectImport(DialectRegistry &registry) {
83 registry.insert<NVVM::NVVMDialect>();
84 registry.addExtension(extensionFn: +[](MLIRContext *ctx, NVVM::NVVMDialect *dialect) {
85 dialect->addInterfaces<NVVMDialectLLVMIRImportInterface>();
86 });
87}
88
89void mlir::registerNVVMDialectImport(MLIRContext &context) {
90 DialectRegistry registry;
91 registerNVVMDialectImport(registry);
92 context.appendDialectRegistry(registry);
93}
94

source code of mlir/lib/Target/LLVMIR/Dialect/NVVM/LLVMIRToNVVMTranslation.cpp