mlir/lib/Conversion/TosaToArith/TosaToArithPass.cpp

   1 //===- TosaToArithPass.cpp - Lowering Tosa to Linalg Dialect -----------===//
   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 transformation pass legalizes Tosa operations to the Arith dialect.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "mlir/Conversion/TosaToArith/TosaToArith.h"
  14
  15 #include "mlir/Dialect/Arith/IR/Arith.h"
  16 #include "mlir/Dialect/Tosa/IR/TosaOps.h"
  17 #include "mlir/Dialect/Tosa/Transforms/Passes.h"
  18 #include "mlir/IR/PatternMatch.h"
  19 #include "mlir/Pass/PassManager.h"
  20 #include "mlir/Transforms/DialectConversion.h"
  21 #include "mlir/Transforms/GreedyPatternRewriteDriver.h"
  22
  23 namespace mlir {
  24 #define GEN_PASS_DEF_TOSATOARITH
  25 #include "mlir/Conversion/Passes.h.inc"
  26 } // namespace mlir
  27
  28 using namespace mlir;
  29 using namespace tosa;
  30
  31 namespace {
  32 struct TosaToArith : public impl::TosaToArithBase<TosaToArith> {
  33 public:
  34   TosaToArith(TosaToArithOptions &options) : TosaToArithBase(options) {}
  35
  36   void runOnOperation() override {
  37     RewritePatternSet patterns(&getContext());
  38     ConversionTarget target(getContext());
  39     target.addIllegalOp<tosa::ConstOp>();
  40     target.addLegalDialect<arith::ArithDialect>();
  41
  42     mlir::tosa::populateTosaToArithConversionPatterns(&patterns);
  43
  44     if (this->includeApplyRescale) {
  45       mlir::tosa::populateTosaRescaleToArithConversionPatterns(&patterns,
  46                                                                this->use32Bit);
  47       target.addIllegalOp<tosa::ApplyScaleOp>();
  48     }
  49
  50     if (failed(applyPartialConversion(getOperation(), target,
  51                                       std::move(patterns))))
  52       signalPassFailure();
  53   }
  54 };
  55 } // namespace
  56
  57 std::unique_ptr<Pass> mlir::tosa::createTosaToArith(bool includeApplyRescale,
  58                                                     bool use32BitApplyRescale) {
  59   TosaToArithOptions options = {includeApplyRescale, use32BitApplyRescale};
  60   return std::make_unique<TosaToArith>(options);
  61 }