mlir/lib/Conversion/FuncToSPIRV/FuncToSPIRVPass.cpp

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