mlir/lib/Conversion/TensorToSPIRV/TensorToSPIRVPass.cpp

   1 //===- TensorToSPIRVPass.cpp - Tensor to SPIR-V Passes ----------------===//
   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 a pass to convert Tensor dialect to SPIR-V dialect.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "mlir/Conversion/TensorToSPIRV/TensorToSPIRVPass.h"
  14
  15 #include "mlir/Conversion/ArithToSPIRV/ArithToSPIRV.h"
  16 #include "mlir/Conversion/FuncToSPIRV/FuncToSPIRV.h"
  17 #include "mlir/Conversion/TensorToSPIRV/TensorToSPIRV.h"
  18 #include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
  19 #include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
  20
  21 namespace mlir {
  22 #define GEN_PASS_DEF_CONVERTTENSORTOSPIRV
  23 #include "mlir/Conversion/Passes.h.inc"
  24 } // namespace mlir
  25
  26 using namespace mlir;
  27
  28 namespace {
  29 /// A pass converting MLIR Tensor operations into the SPIR-V dialect.
  30 class ConvertTensorToSPIRVPass
  31     : public impl::ConvertTensorToSPIRVBase<ConvertTensorToSPIRVPass> {
  32   void runOnOperation() override {
  33     MLIRContext *context = &getContext();
  34     Operation *op = getOperation();
  35
  36     auto targetAttr = spirv::lookupTargetEnvOrDefault(op);
  37     std::unique_ptr<ConversionTarget> target =
  38         SPIRVConversionTarget::get(targetAttr);
  39
  40     SPIRVConversionOptions options;
  41     options.emulateLT32BitScalarTypes = this->emulateLT32BitScalarTypes;
  42     SPIRVTypeConverter typeConverter(targetAttr, options);
  43
  44     RewritePatternSet patterns(context);
  45     arith::populateArithToSPIRVPatterns(typeConverter, patterns);
  46     populateFuncToSPIRVPatterns(typeConverter, patterns);
  47     populateTensorToSPIRVPatterns(typeConverter, /*byteCountThreshold=*/64,
  48                                   patterns);
  49     populateBuiltinFuncToSPIRVPatterns(typeConverter, patterns);
  50
  51     if (failed(applyPartialConversion(op, *target, std::move(patterns))))
  52       return signalPassFailure();
  53   }
  54 };
  55 } // namespace
  56
  57 std::unique_ptr<OperationPass<>> mlir::createConvertTensorToSPIRVPass() {
  58   return std::make_unique<ConvertTensorToSPIRVPass>();
  59 }