1//===- MathToSPIRVPass.cpp - Math 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 standard dialect to SPIR-V dialect.
10//
11//===----------------------------------------------------------------------===//
12
13#include "mlir/Conversion/MathToSPIRV/MathToSPIRVPass.h"
14
15#include "mlir/Conversion/MathToSPIRV/MathToSPIRV.h"
16#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
17#include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
18
19namespace mlir {
20#define GEN_PASS_DEF_CONVERTMATHTOSPIRVPASS
21#include "mlir/Conversion/Passes.h.inc"
22} // namespace mlir
23
24using namespace mlir;
25
26namespace {
27/// A pass converting MLIR Math operations into the SPIR-V dialect.
28class ConvertMathToSPIRVPass
29 : public impl::ConvertMathToSPIRVPassBase<ConvertMathToSPIRVPass> {
30 void runOnOperation() override;
31};
32} // namespace
33
34void ConvertMathToSPIRVPass::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: targetAttr);
41
42 SPIRVTypeConverter typeConverter(targetAttr);
43
44 // Use UnrealizedConversionCast as the bridge so that we don't need to pull
45 // in patterns for other dialects.
46 target->addLegalOp<UnrealizedConversionCastOp>();
47
48 RewritePatternSet patterns(context);
49 populateMathToSPIRVPatterns(typeConverter, patterns);
50
51 if (failed(applyPartialConversion(op, *target, std::move(patterns))))
52 return signalPassFailure();
53}
54

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source code of mlir/lib/Conversion/MathToSPIRV/MathToSPIRVPass.cpp