| 1 | //===- UBToSPIRV.cpp - UB to SPIRV-V dialect conversion -------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "mlir/Conversion/UBToSPIRV/UBToSPIRV.h" |
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| 10 | |
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| 11 | #include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h" |
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| 12 | #include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h" |
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| 13 | #include "mlir/Dialect/UB/IR/UBOps.h" |
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| 14 | #include "mlir/Pass/Pass.h" |
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| 15 | |
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| 16 | namespace mlir { |
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| 17 | #define GEN_PASS_DEF_UBTOSPIRVCONVERSIONPASS |
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| 18 | #include "mlir/Conversion/Passes.h.inc" |
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| 19 | } // namespace mlir |
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| 20 | |
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| 21 | using namespace mlir; |
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| 22 | |
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| 23 | namespace { |
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| 24 | |
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| 25 | struct PoisonOpLowering final : OpConversionPattern<ub::PoisonOp> { |
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| 26 | using OpConversionPattern::OpConversionPattern; |
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| 27 | |
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| 28 | LogicalResult |
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| 29 | matchAndRewrite(ub::PoisonOp op, OpAdaptor, |
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| 30 | ConversionPatternRewriter &rewriter) const override { |
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| 31 | Type origType = op.getType(); |
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| 32 | Type resType = getTypeConverter()->convertType(origType); |
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| 33 | if (!resType) |
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| 34 | return rewriter.notifyMatchFailure(op, [&](Diagnostic &diag) { |
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| 35 | diag << "failed to convert result type " << origType; |
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| 36 | }); |
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| 37 | |
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| 38 | rewriter.replaceOpWithNewOp<spirv::UndefOp>(op, resType); |
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| 39 | return success(); |
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| 40 | } |
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| 41 | }; |
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| 42 | |
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| 43 | } // namespace |
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| 44 | |
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| 45 | //===----------------------------------------------------------------------===// |
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| 46 | // Pass Definition |
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| 47 | //===----------------------------------------------------------------------===// |
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| 48 | |
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| 49 | namespace { |
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| 50 | struct UBToSPIRVConversionPass final |
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| 51 | : impl::UBToSPIRVConversionPassBase<UBToSPIRVConversionPass> { |
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| 52 | using Base::Base; |
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| 53 | |
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| 54 | void runOnOperation() override { |
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| 55 | Operation *op = getOperation(); |
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| 56 | spirv::TargetEnvAttr targetAttr = spirv::lookupTargetEnvOrDefault(op); |
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| 57 | std::unique_ptr<SPIRVConversionTarget> target = |
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| 58 | SPIRVConversionTarget::get(targetAttr); |
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| 59 | |
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| 60 | SPIRVConversionOptions options; |
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| 61 | SPIRVTypeConverter typeConverter(targetAttr, options); |
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| 62 | |
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| 63 | RewritePatternSet patterns(&getContext()); |
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| 64 | ub::populateUBToSPIRVConversionPatterns(converter: typeConverter, patterns); |
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| 65 | |
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| 66 | if (failed(applyPartialConversion(op, *target, std::move(patterns)))) |
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| 67 | signalPassFailure(); |
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| 68 | } |
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| 69 | }; |
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| 70 | } // namespace |
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| 71 | |
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| 72 | //===----------------------------------------------------------------------===// |
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| 73 | // Pattern Population |
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| 74 | //===----------------------------------------------------------------------===// |
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| 75 | |
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| 76 | void mlir::ub::populateUBToSPIRVConversionPatterns( |
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| 77 | const SPIRVTypeConverter &converter, RewritePatternSet &patterns) { |
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| 78 | patterns.add<PoisonOpLowering>(arg: converter, args: patterns.getContext()); |
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| 79 | } |
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| 80 | |
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