66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
//===- MathToSPIRVPass.cpp - Math to SPIR-V Passes ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a pass to convert standard dialect to SPIR-V dialect.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/MathToSPIRV/MathToSPIRVPass.h"
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#include "mlir/Conversion/MathToSPIRV/MathToSPIRV.h"
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#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
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#include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
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#include "mlir/Pass/Pass.h"
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namespace mlir {
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#define GEN_PASS_DEF_CONVERTMATHTOSPIRV
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#include "mlir/Conversion/Passes.h.inc"
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} // namespace mlir
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using namespace mlir;
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namespace {
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/// A pass converting MLIR Math operations into the SPIR-V dialect.
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class ConvertMathToSPIRVPass
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: public impl::ConvertMathToSPIRVBase<ConvertMathToSPIRVPass> {
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void runOnOperation() override;
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};
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} // namespace
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void ConvertMathToSPIRVPass::runOnOperation() {
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MLIRContext *context = &getContext();
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Operation *op = getOperation();
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auto targetAttr = spirv::lookupTargetEnvOrDefault(op);
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std::unique_ptr<ConversionTarget> target =
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SPIRVConversionTarget::get(targetAttr);
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SPIRVTypeConverter typeConverter(targetAttr);
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// Use UnrealizedConversionCast as the bridge so that we don't need to pull
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// in patterns for other dialects.
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auto addUnrealizedCast = [](OpBuilder &builder, Type type, ValueRange inputs,
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Location loc) {
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auto cast = builder.create<UnrealizedConversionCastOp>(loc, type, inputs);
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return Optional<Value>(cast.getResult(0));
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};
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typeConverter.addSourceMaterialization(addUnrealizedCast);
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typeConverter.addTargetMaterialization(addUnrealizedCast);
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target->addLegalOp<UnrealizedConversionCastOp>();
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RewritePatternSet patterns(context);
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populateMathToSPIRVPatterns(typeConverter, patterns);
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if (failed(applyPartialConversion(op, *target, std::move(patterns))))
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return signalPassFailure();
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}
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std::unique_ptr<OperationPass<>> mlir::createConvertMathToSPIRVPass() {
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return std::make_unique<ConvertMathToSPIRVPass>();
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}
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