94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//===- UBToLLVM.cpp - UB to LLVM 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/UBToLLVM/UBToLLVM.h"
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#include "mlir/Conversion/LLVMCommon/ConversionTarget.h"
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#include "mlir/Conversion/LLVMCommon/Pattern.h"
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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#include "mlir/Dialect/UB/IR/UBOps.h"
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#include "mlir/IR/TypeUtilities.h"
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#include "mlir/Pass/Pass.h"
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namespace mlir {
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#define GEN_PASS_DEF_UBTOLLVMCONVERSIONPASS
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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 : public ConvertOpToLLVMPattern<ub::PoisonOp> {
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using ConvertOpToLLVMPattern::ConvertOpToLLVMPattern;
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LogicalResult
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matchAndRewrite(ub::PoisonOp op, OpAdaptor adaptor,
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ConversionPatternRewriter &rewriter) const override;
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};
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} // namespace
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//===----------------------------------------------------------------------===//
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// PoisonOpLowering
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//===----------------------------------------------------------------------===//
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LogicalResult
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PoisonOpLowering::matchAndRewrite(ub::PoisonOp op, OpAdaptor adaptor,
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ConversionPatternRewriter &rewriter) const {
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Type origType = op.getType();
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if (!origType.isIntOrIndexOrFloat())
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return rewriter.notifyMatchFailure(
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op, [&](Diagnostic &diag) { diag << "unsupported type " << origType; });
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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<LLVM::PoisonOp>(op, resType);
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return success();
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}
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//===----------------------------------------------------------------------===//
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// Pass Definition
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//===----------------------------------------------------------------------===//
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namespace {
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struct UBToLLVMConversionPass
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: public impl::UBToLLVMConversionPassBase<UBToLLVMConversionPass> {
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using Base::Base;
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void runOnOperation() override {
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LLVMConversionTarget target(getContext());
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RewritePatternSet patterns(&getContext());
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LowerToLLVMOptions options(&getContext());
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if (indexBitwidth != kDeriveIndexBitwidthFromDataLayout)
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options.overrideIndexBitwidth(indexBitwidth);
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LLVMTypeConverter converter(&getContext(), options);
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mlir::ub::populateUBToLLVMConversionPatterns(converter, patterns);
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if (failed(applyPartialConversion(getOperation(), target,
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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::populateUBToLLVMConversionPatterns(LLVMTypeConverter &converter,
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RewritePatternSet &patterns) {
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patterns.add<PoisonOpLowering>(converter);
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}
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