mlir/lib/Conversion/ComplexToSPIRV/ComplexToSPIRVPass.cpp

   1 //===- ComplexToSPIRVPass.cpp - Complex 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 Complex dialect to SPIR-V dialect.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "mlir/Conversion/ComplexToSPIRV/ComplexToSPIRVPass.h"
  14
  15 #include "mlir/Conversion/ComplexToSPIRV/ComplexToSPIRV.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_CONVERTCOMPLEXTOSPIRVPASS
  21 #include "mlir/Conversion/Passes.h.inc"
  22 } // namespace mlir
  23
  24 using namespace mlir;
  25
  26 namespace {
  27 /// A pass converting MLIR Complex operations into the SPIR-V dialect.
  28 class ConvertComplexToSPIRVPass
  29     : public impl::ConvertComplexToSPIRVPassBase<ConvertComplexToSPIRVPass> {
  30   void runOnOperation() override {
  31     MLIRContext *context = &getContext();
  32     Operation *op = getOperation();
  33
  34     auto targetAttr = spirv::lookupTargetEnvOrDefault(op);
  35     std::unique_ptr<ConversionTarget> target =
  36         SPIRVConversionTarget::get(targetAttr);
  37
  38     SPIRVConversionOptions options;
  39     SPIRVTypeConverter typeConverter(targetAttr, options);
  40
  41     // Use UnrealizedConversionCast as the bridge so that we don't need to pull
  42     // in patterns for other dialects.
  43     target->addLegalOp<UnrealizedConversionCastOp>();
  44
  45     RewritePatternSet patterns(context);
  46     populateComplexToSPIRVPatterns(typeConverter, patterns);
  47
  48     if (failed(applyPartialConversion(op, *target, std::move(patterns))))
  49       return signalPassFailure();
  50   }
  51 };
  52 } // namespace