b00a522b80
This CL changes translation functions to take MemoryBuffer as input and raw_ostream as output. It is generally better to avoid handling files directly in a library (unless the library is specifically for file manipulation) and we can unify all file handling to the mlir-translate binary itself. PiperOrigin-RevId: 269625911
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
//===- ConvertToNVVMIR.cpp - MLIR to LLVM IR conversion -------------------===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =============================================================================
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//
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// This file implements a translation between the MLIR LLVM + NVVM dialects and
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// LLVM IR with NVVM intrinsics and metadata.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Target/NVVMIR.h"
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#include "mlir/Dialect/GPU/GPUDialect.h"
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#include "mlir/Dialect/LLVMIR/NVVMDialect.h"
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#include "mlir/IR/Function.h"
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#include "mlir/IR/Module.h"
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#include "mlir/Target/LLVMIR/ModuleTranslation.h"
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#include "mlir/Translation.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ToolOutputFile.h"
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using namespace mlir;
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namespace {
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static llvm::Value *createIntrinsicCall(llvm::IRBuilder<> &builder,
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llvm::Intrinsic::ID intrinsic,
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ArrayRef<llvm::Value *> args = {}) {
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llvm::Module *module = builder.GetInsertBlock()->getModule();
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llvm::Function *fn = llvm::Intrinsic::getDeclaration(module, intrinsic);
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return builder.CreateCall(fn, args);
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}
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class ModuleTranslation : public LLVM::ModuleTranslation {
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public:
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explicit ModuleTranslation(ModuleOp module)
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: LLVM::ModuleTranslation(module) {}
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~ModuleTranslation() override {}
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protected:
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LogicalResult convertOperation(Operation &opInst,
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llvm::IRBuilder<> &builder) override {
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#include "mlir/Dialect/LLVMIR/NVVMConversions.inc"
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return LLVM::ModuleTranslation::convertOperation(opInst, builder);
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}
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};
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} // namespace
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std::unique_ptr<llvm::Module> mlir::translateModuleToNVVMIR(ModuleOp m) {
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ModuleTranslation translation(m);
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auto llvmModule =
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LLVM::ModuleTranslation::translateModule<ModuleTranslation>(m);
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// Insert the nvvm.annotations kernel so that the NVVM backend recognizes the
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// function as a kernel.
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for (FuncOp func : m.getOps<FuncOp>()) {
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if (!func.getAttrOfType<UnitAttr>(gpu::GPUDialect::getKernelFuncAttrName()))
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continue;
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auto *llvmFunc = llvmModule->getFunction(func.getName());
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llvm::Metadata *llvmMetadata[] = {
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llvm::ValueAsMetadata::get(llvmFunc),
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llvm::MDString::get(llvmModule->getContext(), "kernel"),
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llvm::ValueAsMetadata::get(llvm::ConstantInt::get(
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llvm::Type::getInt32Ty(llvmModule->getContext()), 1))};
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llvm::MDNode *llvmMetadataNode =
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llvm::MDNode::get(llvmModule->getContext(), llvmMetadata);
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llvmModule->getOrInsertNamedMetadata("nvvm.annotations")
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->addOperand(llvmMetadataNode);
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}
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return llvmModule;
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}
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static TranslateFromMLIRRegistration
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registration("mlir-to-nvvmir",
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[](ModuleOp module, llvm::raw_ostream &output) {
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auto llvmModule = mlir::translateModuleToNVVMIR(module);
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if (!llvmModule)
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return failure();
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llvmModule->print(output, nullptr);
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return success();
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});
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