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d61d966451
This is NFC in intent, but I had to restructure the code to emit more of the lists "inline", which means I inevitably altered some IRGen emission patterns in ways that are visible to tests: - GenClass emits property/ivar/whatever descriptors in a somewhat different order. - An ext method type list is now emitted as just an array, not a struct containing only that array. - Protocol descriptors are no longer emitted as packed structs. I was sorely tempted to stop using packed structs for all the metadata emission, but didn't really want to update that many tests in one go.
72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
//===--- GenValueWitness.h - Swift IRGen for value witnesses ----*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides the private interface to the value witness emission
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// code.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_IRGEN_GENVALUEWITNESS_H
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#define SWIFT_IRGEN_GENVALUEWITNESS_H
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#include "swift/Basic/LLVM.h"
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namespace llvm {
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class Constant;
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class Type;
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}
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namespace swift {
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class CanType;
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namespace irgen {
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class ConstantStructBuilder;
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class IRGenModule;
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/// True if a type has a generic-parameter-dependent value witness table.
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/// Currently, this is true if the size and/or alignment of the type is
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/// dependent on its generic parameters.
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bool hasDependentValueWitnessTable(IRGenModule &IGM, CanType ty);
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/// Emit a value-witness table for the given type, which is assumed
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/// to be non-dependent.
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llvm::Constant *emitValueWitnessTable(IRGenModule &IGM, CanType type);
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/// Emit the elements of a dependent value witness table template into a
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/// vector.
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void emitDependentValueWitnessTablePattern(IRGenModule &IGM,
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ConstantStructBuilder &B,
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CanType abstractType);
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/// Build a value witness that initializes an array front-to-back.
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void emitInitializeArrayFrontToBack(IRGenFunction &IGF,
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const TypeInfo &type,
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Address destArray,
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Address srcArray,
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llvm::Value *count,
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SILType T,
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IsTake_t take);
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/// Build a value witness that initializes an array back-to-front.
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void emitInitializeArrayBackToFront(IRGenFunction &IGF,
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const TypeInfo &type,
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Address destArray,
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Address srcArray,
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llvm::Value *count,
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SILType T,
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IsTake_t take);
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}
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}
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#endif
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