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44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
//===--- Existential.h - Existential related Analyses. -------*- 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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#ifndef SWIFT_SILOPTIMIZER_UTILS_EXISTENTIAL_H
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#define SWIFT_SILOPTIMIZER_UTILS_EXISTENTIAL_H
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#include "swift/SIL/SILInstruction.h"
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namespace swift {
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/// Find InitExistential from global_addr and copy_addr.
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SILValue findInitExistentialFromGlobalAddr(GlobalAddrInst *GAI,
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CopyAddrInst *CAI);
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/// Returns the address of an object with which the stack location \p ASI is
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/// initialized. This is either a init_existential_addr or the destination of a
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/// copy_addr. Returns a null value if the address does not dominate the
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/// alloc_stack user \p ASIUser.
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/// If the value is copied from another stack location, \p isCopied is set to
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/// true.
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SILValue getAddressOfStackInit(AllocStackInst *ASI, SILInstruction *ASIUser,
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bool &isCopied);
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/// Find the init_existential, which could be used to determine a concrete
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/// type of the \p Self.
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/// If the value is copied from another stack location, \p isCopied is set to
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/// true.
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SILInstruction *findInitExistential(FullApplySite AI, SILValue Self,
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ArchetypeType *&OpenedArchetype,
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SILValue &OpenedArchetypeDef,
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bool &isCopied);
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} // end namespace swift
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#endif
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