881dc34f73
The dialect-specific cast between builtin (ex-standard) types and LLVM dialect types was introduced long time before built-in support for unrealized_conversion_cast. It has a similar purpose, but is restricted to compatible builtin and LLVM dialect types, which may hamper progressive lowering and composition with types from other dialects. Replace llvm.mlir.cast with unrealized_conversion_cast, and drop the operation that became unnecessary. Also make unrealized_conversion_cast legal by default in LLVMConversionTarget as the majority of convesions using it are partial conversions that actually want the casts to persist in the IR. The standard-to-llvm conversion, which is still expected to run last, cleans up the remaining casts standard-to-llvm conversion, which is still expected to run last, cleans up the remaining casts Reviewed By: nicolasvasilache Differential Revision: https://reviews.llvm.org/D105880
19 lines
691 B
C++
19 lines
691 B
C++
//===- ConversionTarget.cpp - Target for converting to the LLVM dialect ---===//
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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/LLVMCommon/ConversionTarget.h"
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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using namespace mlir;
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mlir::LLVMConversionTarget::LLVMConversionTarget(MLIRContext &ctx)
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: ConversionTarget(ctx) {
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this->addLegalDialect<LLVM::LLVMDialect>();
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this->addLegalOp<UnrealizedConversionCastOp>();
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}
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