e035ef0e74
This patch initializes the `ptr` dialect directories and base files, adding the `!ptr.ptr` type and the `#ptr.spec<...>` data layout spec attribute. The `!ptr.ptr` type is an opaque pointer type optionally parameterized by a memory space. This type typically represents a handle to an object in memory or target-dependent values like `nullptr`. The implementation of the `DataLayoutTypeInterface` interface for `!ptr.ptr` was adapted from `!llvm.ptr`'s implementation. This implementation uses the `#ptr.spec<...>` attribute for defining the data layout specification. See [[RFC] `ptr` dialect & modularizing ptr ops in the LLVM dialect](https://discourse.llvm.org/t/rfc-ptr-dialect-modularizing-ptr-ops-in-the-llvm-dialect/75142) for rationale and roadmap.
41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
//===- PtrAttrs.cpp - Pointer dialect attributes ----------------*- C++ -*-===//
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//
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// This file is licensed 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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//
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// This file defines the Ptr dialect attributes.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/Ptr/IR/PtrAttrs.h"
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#include "llvm/ADT/TypeSwitch.h"
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using namespace mlir;
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using namespace mlir::ptr;
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constexpr const static unsigned kBitsInByte = 8;
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//===----------------------------------------------------------------------===//
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// SpecAttr
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//===----------------------------------------------------------------------===//
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LogicalResult SpecAttr::verify(function_ref<InFlightDiagnostic()> emitError,
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uint32_t size, uint32_t abi, uint32_t preferred,
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uint32_t index) {
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if (size % kBitsInByte != 0)
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return emitError() << "size entry must be divisible by 8";
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if (abi % kBitsInByte != 0)
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return emitError() << "abi entry must be divisible by 8";
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if (preferred % kBitsInByte != 0)
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return emitError() << "preferred entry must be divisible by 8";
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if (index != kOptionalSpecValue && index % kBitsInByte != 0)
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return emitError() << "index entry must be divisible by 8";
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if (abi > preferred)
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return emitError() << "preferred alignment is expected to be at least "
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"as large as ABI alignment";
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return success();
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}
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