77eafb8430
wmma intrinsics have a large number of combinations, ideally we want to be able to target all the different variants. To avoid a combinatorial explosion in the number of mlir op we use attributes to represent the different variation of load/store/mma ops. We also can generate with tablegen helpers to know which combinations are available. Using this we can avoid having too hardcode a path for specific shapes and can support more types. This patch also adds boiler plates for tf32 op support. Differential Revision: https://reviews.llvm.org/D112689
94 lines
3.6 KiB
C++
94 lines
3.6 KiB
C++
//===- NVVMToLLVMIRTranslation.cpp - Translate NVVM to LLVM IR ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a translation between the MLIR NVVM dialect and
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// LLVM IR.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Target/LLVMIR/Dialect/NVVM/NVVMToLLVMIRTranslation.h"
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#include "mlir/Dialect/LLVMIR/NVVMDialect.h"
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#include "mlir/IR/Operation.h"
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#include "mlir/Target/LLVMIR/ModuleTranslation.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/IntrinsicsNVPTX.h"
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using namespace mlir;
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using namespace mlir::LLVM;
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using mlir::LLVM::detail::createIntrinsicCall;
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static llvm::Intrinsic::ID getShflBflyIntrinsicId(llvm::Type *resultType,
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bool withPredicate) {
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if (withPredicate) {
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resultType = cast<llvm::StructType>(resultType)->getElementType(0);
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return resultType->isFloatTy() ? llvm::Intrinsic::nvvm_shfl_sync_bfly_f32p
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: llvm::Intrinsic::nvvm_shfl_sync_bfly_i32p;
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}
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return resultType->isFloatTy() ? llvm::Intrinsic::nvvm_shfl_sync_bfly_f32
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: llvm::Intrinsic::nvvm_shfl_sync_bfly_i32;
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}
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namespace {
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/// Implementation of the dialect interface that converts operations belonging
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/// to the NVVM dialect to LLVM IR.
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class NVVMDialectLLVMIRTranslationInterface
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: public LLVMTranslationDialectInterface {
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public:
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using LLVMTranslationDialectInterface::LLVMTranslationDialectInterface;
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/// Translates the given operation to LLVM IR using the provided IR builder
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/// and saving the state in `moduleTranslation`.
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LogicalResult
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convertOperation(Operation *op, llvm::IRBuilderBase &builder,
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LLVM::ModuleTranslation &moduleTranslation) const final {
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Operation &opInst = *op;
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#include "mlir/Dialect/LLVMIR/NVVMConversions.inc"
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return failure();
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}
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/// Attaches module-level metadata for functions marked as kernels.
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LogicalResult
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amendOperation(Operation *op, NamedAttribute attribute,
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LLVM::ModuleTranslation &moduleTranslation) const final {
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if (attribute.first == NVVM::NVVMDialect::getKernelFuncAttrName()) {
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auto func = dyn_cast<LLVM::LLVMFuncOp>(op);
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if (!func)
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return failure();
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llvm::LLVMContext &llvmContext = moduleTranslation.getLLVMContext();
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llvm::Function *llvmFunc =
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moduleTranslation.lookupFunction(func.getName());
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llvm::Metadata *llvmMetadata[] = {
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llvm::ValueAsMetadata::get(llvmFunc),
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llvm::MDString::get(llvmContext, "kernel"),
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llvm::ValueAsMetadata::get(
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llvm::ConstantInt::get(llvm::Type::getInt32Ty(llvmContext), 1))};
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llvm::MDNode *llvmMetadataNode =
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llvm::MDNode::get(llvmContext, llvmMetadata);
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moduleTranslation.getOrInsertNamedModuleMetadata("nvvm.annotations")
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->addOperand(llvmMetadataNode);
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}
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return success();
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}
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};
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} // end namespace
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void mlir::registerNVVMDialectTranslation(DialectRegistry ®istry) {
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registry.insert<NVVM::NVVMDialect>();
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registry.addDialectInterface<NVVM::NVVMDialect,
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NVVMDialectLLVMIRTranslationInterface>();
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}
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void mlir::registerNVVMDialectTranslation(MLIRContext &context) {
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DialectRegistry registry;
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registerNVVMDialectTranslation(registry);
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context.appendDialectRegistry(registry);
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}
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