| //===- AddDefaultStatsTestPass.cpp - Testing pass to add default stats ----===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines a testing pass to add default statistics nodes to every |
| // quantization eligible op. Useful for unit testing. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "mlir/Dialect/Quant/QuantOps.h" |
| #include "mlir/Dialect/Quant/QuantTypes.h" |
| #include "mlir/IR/Attributes.h" |
| #include "mlir/IR/Builders.h" |
| #include "mlir/Quantizer/Configurations/FxpMathConfig.h" |
| #include "mlir/Quantizer/Support/Configuration.h" |
| #include "mlir/Quantizer/Support/ConstraintAnalysisGraph.h" |
| #include "mlir/Quantizer/Support/ConstraintAnalysisGraphTraits.h" |
| #include "mlir/Quantizer/Transforms/Passes.h" |
| #include "mlir/Support/LogicalResult.h" |
| #include "llvm/Support/GraphWriter.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| using namespace mlir; |
| using namespace mlir::quantizer; |
| using namespace mlir::quant; |
| |
| namespace { |
| class AddDefaultStatsPass : public FunctionPass<AddDefaultStatsPass> { |
| public: |
| /// Include the generated pass utilities. |
| #define GEN_PASS_QuantizerAddDefaultStats |
| #include "mlir/Quantizer/Transforms/Passes.h.inc" |
| |
| AddDefaultStatsPass() = default; |
| AddDefaultStatsPass(SolverContext &solverContext, |
| const TargetConfiguration &config) |
| : explicitSolverContext(&solverContext), explicitConfig(&config) {} |
| |
| void runOnFunction() override; |
| void runWithConfig(SolverContext &solverContext, |
| const TargetConfiguration &config); |
| |
| private: |
| SolverContext *explicitSolverContext = nullptr; |
| const TargetConfiguration *explicitConfig = nullptr; |
| }; |
| |
| } // end anonymous namespace |
| |
| void AddDefaultStatsPass::runOnFunction() { |
| if (explicitSolverContext && explicitConfig) { |
| // If explicitly constructed with a config and context. |
| runWithConfig(*explicitSolverContext, *explicitConfig); |
| return; |
| } |
| // For global pass registration, use defaults. |
| SolverContext solverContext(*getFunction().getContext()); |
| auto config = FxpMathTargetConfig::create(solverContext); |
| runWithConfig(solverContext, *config); |
| } |
| |
| void AddDefaultStatsPass::runWithConfig(SolverContext &solverContext, |
| const TargetConfiguration &config) { |
| auto func = getFunction(); |
| |
| // Insert stats for each argument. |
| for (auto arg : func.getArguments()) { |
| if (!config.isHandledType(arg.getType())) |
| continue; |
| OpBuilder b(func.getBody()); |
| APFloat minValue(-1.0f); |
| APFloat maxValue(1.0f); |
| ElementsAttr layerStats = DenseFPElementsAttr::get( |
| RankedTensorType::get({2}, b.getF32Type()), {minValue, maxValue}); |
| auto statsOp = b.create<StatisticsOp>(func.getLoc(), arg, layerStats, |
| nullptr, nullptr); |
| arg.replaceAllUsesWith(statsOp); |
| |
| // StatsOp contained a use to 'arg' so make sure to reset it after replacing |
| // all of the uses of 'arg'. |
| statsOp.getOperation()->replaceUsesOfWith(statsOp, arg); |
| } |
| |
| // Walk the ops and insert stats. |
| func.walk([&](Operation *op) { |
| if (!config.isRequireStatsOp(op)) { |
| return; |
| } |
| assert(op->getNumResults() == 1); |
| |
| auto originalResult = op->getResult(0); |
| if (!config.isHandledType(originalResult.getType())) |
| return; |
| |
| OpBuilder b(op->getBlock(), ++op->getIterator()); |
| |
| APFloat minValue(-1.0f); |
| APFloat maxValue(1.0f); |
| ElementsAttr layerStats = DenseFPElementsAttr::get( |
| RankedTensorType::get({2}, b.getF32Type()), {minValue, maxValue}); |
| auto statsOp = b.create<StatisticsOp>(op->getLoc(), op->getResult(0), |
| layerStats, nullptr, nullptr); |
| originalResult.replaceAllUsesWith(statsOp); |
| |
| // StatsOp contained a use to 'op' so make sure to reset it after replacing |
| // all of the uses of 'op'. |
| statsOp.getOperation()->replaceUsesOfWith(statsOp, originalResult); |
| }); |
| } |
| |
| std::unique_ptr<OpPassBase<FuncOp>> |
| mlir::quantizer::createAddDefaultStatsPass() { |
| return std::make_unique<AddDefaultStatsPass>(); |
| } |