87 lines · cpp
1//===- TestAvailability.cpp - Test pass for setting Entry point ABI info --===//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 a pass that sets the spirv.entry_point_abi attribute on10// functions that are to be lowered as entry point functions.11//12//===----------------------------------------------------------------------===//13 14#include "mlir/Dialect/GPU/IR/GPUDialect.h"15#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"16#include "mlir/Dialect/SPIRV/IR/TargetAndABI.h"17#include "mlir/Pass/Pass.h"18 19using namespace mlir;20 21namespace {22/// Pass to set the spirv.entry_point_abi23struct TestSpirvEntryPointABIPass24 : public PassWrapper<TestSpirvEntryPointABIPass,25 OperationPass<gpu::GPUModuleOp>> {26 MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestSpirvEntryPointABIPass)27 28 StringRef getArgument() const final { return "test-spirv-entry-point-abi"; }29 StringRef getDescription() const final {30 return "Set the spirv.entry_point_abi attribute on GPU kernel function "31 "within the "32 "module, intended for testing only";33 }34 void getDependentDialects(DialectRegistry ®istry) const override {35 registry.insert<spirv::SPIRVDialect>();36 }37 TestSpirvEntryPointABIPass() = default;38 TestSpirvEntryPointABIPass(const TestSpirvEntryPointABIPass &) {}39 void runOnOperation() override;40 41private:42 Pass::ListOption<int32_t> workgroupSize{43 *this, "workgroup-size",44 llvm::cl::desc(45 "Workgroup size to use for all gpu.func kernels in the module, "46 "specified with x-dimension first, y-dimension next and z-dimension "47 "last. Unspecified dimensions will be set to 1")};48 Pass::Option<int> subgroupSize{49 *this, "subgroup-size",50 llvm::cl::desc(51 "Subgroup size to use for all gpu.func kernels in the module"),52 llvm::cl::init(0)};53 Pass::Option<int> targetWidth{54 *this, "target-width",55 llvm::cl::desc(56 "Specify the component width of floating-point instructions"),57 llvm::cl::init(0)};58};59} // namespace60 61void TestSpirvEntryPointABIPass::runOnOperation() {62 gpu::GPUModuleOp gpuModule = getOperation();63 MLIRContext *context = &getContext();64 StringRef attrName = spirv::getEntryPointABIAttrName();65 for (gpu::GPUFuncOp gpuFunc : gpuModule.getOps<gpu::GPUFuncOp>()) {66 if (!gpu::GPUDialect::isKernel(gpuFunc) ||67 gpuFunc->getDiscardableAttr(attrName))68 continue;69 SmallVector<int32_t, 3> workgroupSizeVec(workgroupSize.begin(),70 workgroupSize.end());71 workgroupSizeVec.resize(3, 1);72 gpuFunc->setAttr(attrName,73 spirv::getEntryPointABIAttr(74 context, workgroupSizeVec,75 (subgroupSize == 0) ? std::nullopt76 : std::optional<int>(subgroupSize),77 (targetWidth == 0) ? std::nullopt78 : std::optional<int>(targetWidth)));79 }80}81 82namespace mlir {83void registerTestSpirvEntryPointABIPass() {84 PassRegistration<TestSpirvEntryPointABIPass>();85}86} // namespace mlir87