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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the pass testing the utilities for moving data across 10 // 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 23 using namespace mlir; 24 25 namespace { 26 /// Simple pass for testing the promotion to workgroup memory in GPU functions. 27 /// Promotes all arguments with "gpu.test_promote_workgroup" attribute. This 28 /// does not check whether the promotion is legal (e.g., amount of memory used) 29 /// or beneficial (e.g., makes previously uncoalesced loads coalesced). 30 struct TestGpuMemoryPromotionPass 31 : public PassWrapper<TestGpuMemoryPromotionPass, 32 OperationPass<gpu::GPUFuncOp>> { MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID__anon92d9ceb70111::TestGpuMemoryPromotionPass33 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 } getArgument__anon92d9ceb70111::TestGpuMemoryPromotionPass39 StringRef getArgument() const final { return "test-gpu-memory-promotion"; } getDescription__anon92d9ceb70111::TestGpuMemoryPromotionPass40 StringRef getDescription() const final { 41 return "Promotes the annotated arguments of gpu.func to workgroup memory."; 42 } 43 runOnOperation__anon92d9ceb70111::TestGpuMemoryPromotionPass44 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 } // namespace 53 54 namespace mlir { registerTestGpuMemoryPromotionPass()55void registerTestGpuMemoryPromotionPass() { 56 PassRegistration<TestGpuMemoryPromotionPass>(); 57 } 58 } // namespace mlir 59