59 lines · cpp
1//===- TestGPUMemoryPromotionPass.cpp - Test pass for GPU promotion -------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the pass testing the utilities for moving data across10// different levels of the GPU memory hierarchy.11//12//===----------------------------------------------------------------------===//13 14#include "mlir/Dialect/Affine/IR/AffineOps.h"15#include "mlir/Dialect/GPU/IR/GPUDialect.h"16#include "mlir/Dialect/GPU/Transforms/MemoryPromotion.h"17#include "mlir/Dialect/MemRef/IR/MemRef.h"18#include "mlir/Dialect/SCF/IR/SCF.h"19#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"20#include "mlir/IR/Attributes.h"21#include "mlir/Pass/Pass.h"22 23using namespace mlir;24 25namespace {26/// Simple pass for testing the promotion to workgroup memory in GPU functions.27/// Promotes all arguments with "gpu.test_promote_workgroup" attribute. This28/// does not check whether the promotion is legal (e.g., amount of memory used)29/// or beneficial (e.g., makes previously uncoalesced loads coalesced).30struct TestGpuMemoryPromotionPass31 : public PassWrapper<TestGpuMemoryPromotionPass,32 OperationPass<gpu::GPUFuncOp>> {33 MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestGpuMemoryPromotionPass)34 35 void getDependentDialects(DialectRegistry ®istry) const override {36 registry.insert<affine::AffineDialect, memref::MemRefDialect,37 scf::SCFDialect>();38 }39 StringRef getArgument() const final { return "test-gpu-memory-promotion"; }40 StringRef getDescription() const final {41 return "Promotes the annotated arguments of gpu.func to workgroup memory.";42 }43 44 void runOnOperation() override {45 gpu::GPUFuncOp op = getOperation();46 for (unsigned i = 0, e = op.getNumArguments(); i < e; ++i) {47 if (op.getArgAttrOfType<UnitAttr>(i, "gpu.test_promote_workgroup"))48 promoteToWorkgroupMemory(op, i);49 }50 }51};52} // namespace53 54namespace mlir {55void registerTestGpuMemoryPromotionPass() {56 PassRegistration<TestGpuMemoryPromotionPass>();57}58} // namespace mlir59