52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
//===- StructBuilder.h - Helper for building LLVM structs -------*- C++ -*-===//
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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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//
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// Provides a convenience API for emitting IR that inspects or constructs values
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// of LLVM dialect structure types.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MLIR_CONVERSION_LLVMCOMMON_STRUCTBUILDER_H
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#define MLIR_CONVERSION_LLVMCOMMON_STRUCTBUILDER_H
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#include "mlir/IR/Types.h"
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#include "mlir/IR/Value.h"
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namespace mlir {
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class OpBuilder;
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/// Helper class to produce LLVM dialect operations extracting or inserting
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/// values to a struct.
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class StructBuilder {
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public:
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/// Construct a helper for the given value.
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explicit StructBuilder(Value v);
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/// Builds IR creating a `poison` value of the descriptor type.
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static StructBuilder poison(OpBuilder &builder, Location loc,
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Type descriptorType);
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/*implicit*/ operator Value() { return value; }
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protected:
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// LLVM value
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Value value;
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// Cached struct type.
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Type structType;
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protected:
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/// Builds IR to extract a value from the struct at position pos
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Value extractPtr(OpBuilder &builder, Location loc, unsigned pos) const;
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/// Builds IR to set a value in the struct at position pos
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void setPtr(OpBuilder &builder, Location loc, unsigned pos, Value ptr);
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};
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} // namespace mlir
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#endif // MLIR_CONVERSION_LLVMCOMMON_STRUCTBUILDER_H
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