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//===- TosaToLinalgPass.cpp - Lowering Tosa to Linalg Dialect -------------===//
//
// 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 transformation pass legalizes Tosa operations to the Linalg dialect.
//
//===----------------------------------------------------------------------===//
#include "mlir/Conversion/TosaToLinalg/TosaToLinalg.h"
#include "mlir/Dialect/Arith/IR/Arith.h"
#include "mlir/Dialect/Func/IR/FuncOps.h"
#include "mlir/Dialect/Index/IR/IndexDialect.h"
#include "mlir/Dialect/Linalg/IR/Linalg.h"
#include "mlir/Dialect/Math/IR/Math.h"
#include "mlir/Dialect/SCF/IR/SCF.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Tosa/IR/TosaOps.h"
#include "mlir/Dialect/Tosa/Transforms/Passes.h"
#include "mlir/IR/PatternMatch.h"
#include "mlir/Pass/PassManager.h"
#include "mlir/Transforms/DialectConversion.h"
#include "mlir/Transforms/Passes.h"
namespace mlir {
#define GEN_PASS_DEF_TOSATOLINALG
#include "mlir/Conversion/Passes.h.inc"
} // namespace mlir
using namespace mlir;
namespace {
struct TosaToLinalg : public impl::TosaToLinalgBase<TosaToLinalg> {
public:
void getDependentDialects(DialectRegistry ®istry) const override {
registry
.insert<arith::ArithDialect, linalg::LinalgDialect, math::MathDialect,
index::IndexDialect, tensor::TensorDialect, scf::SCFDialect>();
}
void runOnOperation() override {
RewritePatternSet patterns(&getContext());
ConversionTarget target(getContext());
target.addLegalDialect<linalg::LinalgDialect, tensor::TensorDialect,
scf::SCFDialect>();
target.addIllegalDialect<tosa::TosaDialect>();
// Not every TOSA op can be legalized to linalg.
target.addLegalOp<tosa::ApplyScaleOp>();
target.addLegalOp<tosa::IfOp>();
target.addLegalOp<tosa::ConstOp>();
target.addLegalOp<tosa::ConstShapeOp>();
target.addLegalOp<tosa::WhileOp>();
target.addLegalOp<tosa::ConcatOp>();
target.addLegalOp<tosa::SliceOp>();
target.addLegalOp<tosa::ReshapeOp>();
target.addLegalOp<tosa::PadOp>();
target.markUnknownOpDynamicallyLegal([](Operation *) { return true; });
TypeConverter converter;
tosa::populateTosaTypeConversion(converter);
FunctionOpInterface func = getOperation();
mlir::tosa::populateTosaToLinalgConversionPatterns(converter, &patterns);
if (failed(applyFullConversion(func, target, std::move(patterns))))
signalPassFailure();
}
};
} // namespace
std::unique_ptr<Pass> mlir::tosa::createTosaToLinalg() {
return std::make_unique<TosaToLinalg>();
}
void mlir::tosa::addTosaToLinalgPasses(
OpPassManager &pm, const TosaToLinalgOptions &options,
const TosaToLinalgNamedOptions &tosaToLinalgNamedOptions,
std::optional<tosa::TosaValidationOptions> validationOptions) {
// Optional decompositions are designed to benefit linalg.
if (!options.disableTosaDecompositions)
pm.addNestedPass<func::FuncOp>(
tosa::createTosaOptionalDecompositionsPass());
pm.addNestedPass<func::FuncOp>(createCanonicalizerPass());
pm.addNestedPass<func::FuncOp>(tosa::createTosaInferShapesPass());
pm.addNestedPass<func::FuncOp>(tosa::createTosaMakeBroadcastablePass());
pm.addNestedPass<func::FuncOp>(
tosa::createTosaToLinalgNamed(tosaToLinalgNamedOptions));
pm.addNestedPass<func::FuncOp>(createCanonicalizerPass());
// TODO: Remove pass that operates on const tensor and enable optionality
pm.addNestedPass<func::FuncOp>(tosa::createTosaLayerwiseConstantFoldPass(
{options.aggressiveReduceConstant}));
pm.addNestedPass<func::FuncOp>(tosa::createTosaMakeBroadcastablePass());
if (validationOptions)
pm.addPass(tosa::createTosaValidation(*validationOptions));
pm.addNestedPass<func::FuncOp>(tosa::createTosaToLinalg());
}
//===----------------------------------------------------------------------===//
// Pipeline registration.
//===----------------------------------------------------------------------===//
void mlir::tosa::registerTosaToLinalgPipelines() {
PassPipelineRegistration<>(
"tosa-to-linalg-pipeline",
"The default pipeline for converting TOSA operators to the equivalent "
"operations using the tensor operations in LinAlg as well as LinAlg "
"named operations.",
[](OpPassManager &pm) {
TosaToLinalgOptions tosaToLinalgOptions;
TosaToLinalgNamedOptions tosaToLinalgNamedOptions;
TosaValidationOptions validationOptions;
validationOptions.strictOpSpecAlignment = false;
validationOptions.allowInvalidOpDatatypeCombinations = false;
tosa::addTosaToLinalgPasses(pm, tosaToLinalgOptions,
tosaToLinalgNamedOptions,
validationOptions);
});
}
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