85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
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//===- UBToSPIRV.cpp - UB to SPIRV-V dialect conversion -------------------===//
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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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#include "mlir/Conversion/UBToSPIRV/UBToSPIRV.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/Dialect/UB/IR/UBOps.h"
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#include "mlir/Pass/Pass.h"
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namespace mlir {
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#define GEN_PASS_DEF_UBTOSPIRVCONVERSIONPASS
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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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struct PoisonOpLowering final : OpConversionPattern<ub::PoisonOp> {
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using OpConversionPattern::OpConversionPattern;
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LogicalResult
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matchAndRewrite(ub::PoisonOp op, OpAdaptor,
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ConversionPatternRewriter &rewriter) const override {
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Type origType = op.getType();
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if (!origType.isIntOrIndexOrFloat())
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return rewriter.notifyMatchFailure(op, [&](Diagnostic &diag) {
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diag << "unsupported type " << origType;
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});
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Type resType = getTypeConverter()->convertType(origType);
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if (!resType)
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return rewriter.notifyMatchFailure(op, [&](Diagnostic &diag) {
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diag << "failed to convert result type " << origType;
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});
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rewriter.replaceOpWithNewOp<spirv::UndefOp>(op, resType);
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return success();
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}
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};
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} // namespace
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//===----------------------------------------------------------------------===//
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// Pass Definition
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//===----------------------------------------------------------------------===//
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namespace {
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struct UBToSPIRVConversionPass final
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: impl::UBToSPIRVConversionPassBase<UBToSPIRVConversionPass> {
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using Base::Base;
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void runOnOperation() override {
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Operation *op = getOperation();
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spirv::TargetEnvAttr targetAttr = spirv::lookupTargetEnvOrDefault(op);
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std::unique_ptr<SPIRVConversionTarget> target =
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SPIRVConversionTarget::get(targetAttr);
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SPIRVConversionOptions options;
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SPIRVTypeConverter typeConverter(targetAttr, options);
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RewritePatternSet patterns(&getContext());
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ub::populateUBToSPIRVConversionPatterns(typeConverter, patterns);
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if (failed(applyPartialConversion(op, *target, std::move(patterns))))
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signalPassFailure();
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}
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};
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} // namespace
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//===----------------------------------------------------------------------===//
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// Pattern Population
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//===----------------------------------------------------------------------===//
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void mlir::ub::populateUBToSPIRVConversionPatterns(
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SPIRVTypeConverter &converter, RewritePatternSet &patterns) {
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patterns.add<PoisonOpLowering>(converter, patterns.getContext());
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}
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