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63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
//===--- GenPoly.h - Swift IR generation for polymorphism -------*- 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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 code for translating
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// between polymorphic and monomorphic values.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_IRGEN_GENPOLY_H
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#define SWIFT_IRGEN_GENPOLY_H
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namespace llvm {
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class Type;
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template <class T> class ArrayRef;
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}
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namespace swift {
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class CanType;
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enum class ResilienceExpansion : unsigned;
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class Substitution;
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namespace irgen {
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class Explosion;
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class IRGenFunction;
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class IRGenModule;
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/// Do the given types differ by abstraction when laid out as memory?
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bool differsByAbstractionInMemory(IRGenModule &IGM,
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CanType origTy, CanType substTy);
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/// Do the given types differ by abstraction when passed in an explosion?
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bool differsByAbstractionInExplosion(IRGenModule &IGM,
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CanType origTy, CanType substTy,
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ResilienceExpansion explosionLevel);
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/// Given a substituted explosion, re-emit it as an unsubstituted one.
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///
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/// For example, given an explosion which begins with the
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/// representation of an (Int, Float), consume that and produce the
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/// representation of an (Int, T).
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///
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/// The substitutions must carry origTy to substTy.
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void reemitAsUnsubstituted(IRGenFunction &IGF,
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SILType origTy, SILType substTy,
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ArrayRef<Substitution> subs,
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Explosion &src, Explosion &dest);
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/// True if a function's signature in LLVM carries polymorphic parameters.
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bool hasPolymorphicParameters(CanSILFunctionType ty);
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} // end namespace irgen
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} // end namespace swift
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#endif
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