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LLVMARCOpts.h
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//===--- LLVMARCOpts.h - LLVM level ARC Opts Util. Declarations -*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_LLVMPASSES_LLVMARCOPTS_H
#define SWIFT_LLVMPASSES_LLVMARCOPTS_H
#include "swift/Basic/LLVM.h"
#include "swift/Runtime/Config.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Function.h"
#include "llvm/ADT/StringSwitch.h"
#if defined(SWIFT_WRAPPER_PREFIX)
#define SWIFT_WRAPPER_NAME(Name) SWIFT_WRAPPER_PREFIX Name
#endif
namespace swift {
enum RT_Kind {
/// An instruction with this classification is known to not access (read or
/// write) memory.
RT_NoMemoryAccessed,
/// void swift_retain(SwiftHeapObject *object)
RT_Retain,
/// void swift_retain_n(SwiftHeapObject *object)
RT_RetainN,
/// void swift::swift_retainUnowned(HeapObject *object)
RT_RetainUnowned,
/// void swift_checkUnowned(HeapObject *object)
RT_CheckUnowned,
/// void swift_release(SwiftHeapObject *object)
RT_Release,
/// void swift_release_n(SwiftHeapObject *object)
RT_ReleaseN,
/// SwiftHeapObject *swift_allocObject(SwiftHeapMetadata *metadata,
/// size_t size, size_t alignment)
RT_AllocObject,
/// void objc_release(%objc_object* %P)
RT_ObjCRelease,
/// %objc_object* objc_retain(%objc_object* %P)
RT_ObjCRetain,
/// void swift_unknownRetain(%swift.refcounted* %P)
RT_UnknownRetain,
/// void swift_unknownRetain_n(%swift.refcounted* %P)
RT_UnknownRetainN,
/// void swift_unknownRelease(%swift.refcounted* %P)
RT_UnknownRelease,
/// void swift_unknownRelease_n(%swift.refcounted* %P)
RT_UnknownReleaseN,
/// void __swift_fixLifetime(%swift.refcounted* %P)
RT_FixLifetime,
/// void swift_bridgeRetain(%swift.refcounted* %P)
RT_BridgeRetain,
/// void swift_bridgeRetain_n(%swift.refcounted* %P)
RT_BridgeRetainN,
/// void swift_bridgeRelease(%swift.refcounted* %P)
RT_BridgeRelease,
/// void swift_bridgeRelease_n(%swift.refcounted* %P)
RT_BridgeReleaseN,
/// This is not a runtime function that we support. Maybe it is not a call,
/// or is a call to something we don't care about.
RT_Unknown,
};
/// classifyInstruction - Take a look at the specified instruction and classify
/// it into what kind of runtime entrypoint it is, if any.
inline RT_Kind classifyInstruction(const llvm::Instruction &I) {
if (!I.mayReadOrWriteMemory())
return RT_NoMemoryAccessed;
// Non-calls or calls to indirect functions are unknown.
auto *CI = dyn_cast<llvm::CallInst>(&I);
if (CI == 0) return RT_Unknown;
llvm::Function *F = CI->getCalledFunction();
if (F == 0) return RT_Unknown;
return llvm::StringSwitch<RT_Kind>(F->getName())
.Case("swift_retain", RT_Retain)
.Case("swift_retain_n", RT_RetainN)
.Case("swift_release", RT_Release)
.Case("swift_release_n", RT_ReleaseN)
.Case("swift_allocObject", RT_AllocObject)
.Case("objc_release", RT_ObjCRelease)
.Case("objc_retain", RT_ObjCRetain)
.Case("swift_retainUnowned", RT_RetainUnowned)
.Case("swift_checkUnowned", RT_CheckUnowned)
.Case("swift_bridgeObjectRetain", RT_BridgeRetain)
.Case("swift_bridgeObjectRetain_n", RT_BridgeRetainN)
.Case("swift_bridgeObjectRelease", RT_BridgeRelease)
.Case("swift_bridgeObjectRelease_n", RT_BridgeReleaseN)
.Case("swift_unknownRetain", RT_UnknownRetain)
.Case("swift_unknownRetain_n", RT_UnknownRetainN)
.Case("swift_unknownRelease", RT_UnknownRelease)
.Case("swift_unknownRelease_n", RT_UnknownReleaseN)
.Case("__swift_fixLifetime", RT_FixLifetime)
#if defined(SWIFT_WRAPPER_PREFIX)
.Case(SWIFT_WRAPPER_NAME("swift_retain"), RT_Retain)
.Case(SWIFT_WRAPPER_NAME("swift_retain_n"), RT_RetainN)
.Case(SWIFT_WRAPPER_NAME("swift_release"), RT_Release)
.Case(SWIFT_WRAPPER_NAME("swift_release_n"), RT_ReleaseN)
.Case(SWIFT_WRAPPER_NAME("swift_allocObject"), RT_AllocObject)
.Case(SWIFT_WRAPPER_NAME("objc_release"), RT_ObjCRelease)
.Case(SWIFT_WRAPPER_NAME("objc_retain"), RT_ObjCRetain)
.Case(SWIFT_WRAPPER_NAME("swift_retainUnowned"), RT_RetainUnowned)
.Case(SWIFT_WRAPPER_NAME("swift_checkUnowned"), RT_CheckUnowned)
.Case(SWIFT_WRAPPER_NAME("swift_bridgeObjectRetain"), RT_BridgeRetain)
.Case(SWIFT_WRAPPER_NAME("swift_bridgeObjectRetain_n"), RT_BridgeRetainN)
.Case(SWIFT_WRAPPER_NAME("swift_bridgeObjectRelease"), RT_BridgeRelease)
.Case(SWIFT_WRAPPER_NAME("swift_bridgeObjectRelease_n"), RT_BridgeReleaseN)
.Case(SWIFT_WRAPPER_NAME("swift_unknownRetain"), RT_UnknownRetain)
.Case(SWIFT_WRAPPER_NAME("swift_unknownRetain_n"), RT_UnknownRetainN)
.Case(SWIFT_WRAPPER_NAME("swift_unknownRelease"), RT_UnknownRelease)
.Case(SWIFT_WRAPPER_NAME("swift_unknownRelease_n"), RT_UnknownReleaseN)
#endif
// Support non-atomic versions of reference counting entry points.
.Case("swift_nonatomic_retain", RT_Retain)
.Case("swift_nonatomic_retain_n", RT_RetainN)
.Case("swift_nonatomic_release", RT_Release)
.Case("swift_nonatomic_release_n", RT_ReleaseN)
.Case("objc_nonatomic_release", RT_ObjCRelease)
.Case("objc_nonatomic_retain", RT_ObjCRetain)
.Case("swift_nonatomic_retainUnowned", RT_RetainUnowned)
.Case("swift_nonatomic_checkUnowned", RT_CheckUnowned)
.Case("swift_nonatomic_bridgeObjectRetain", RT_BridgeRetain)
.Case("swift_nonatomic_bridgeObjectRetain_n", RT_BridgeRetainN)
.Case("swift_nonatomic_bridgeObjectRelease", RT_BridgeRelease)
.Case("swift_nonatomic_bridgeObjectRelease_n", RT_BridgeReleaseN)
.Case("swift_nonatomic_unknownRetain", RT_UnknownRetain)
.Case("swift_nonatomic_unknownRetain_n", RT_UnknownRetainN)
.Case("swift_nonatomic_unknownRelease", RT_UnknownRelease)
.Case("swift_nonatomic_unknownRelease_n", RT_UnknownReleaseN)
#if defined(SWIFT_WRAPPER_PREFIX)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_retain"), RT_Retain)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_retain_n"), RT_RetainN)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_release"), RT_Release)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_release_n"), RT_ReleaseN)
.Case(SWIFT_WRAPPER_NAME("objc_nonatomic_release"), RT_ObjCRelease)
.Case(SWIFT_WRAPPER_NAME("objc_nonatomic_retain"), RT_ObjCRetain)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_retainUnowned"), RT_RetainUnowned)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_checkUnowned"), RT_CheckUnowned)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_bridgeObjectRetain"), RT_BridgeRetain)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_bridgeObjectRetain_n"), RT_BridgeRetainN)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_bridgeObjectRelease"), RT_BridgeRelease)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_bridgeObjectRelease_n"), RT_BridgeReleaseN)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_unknownRetain"), RT_UnknownRetain)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_unknownRetain_n"), RT_UnknownRetainN)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_unknownRelease"), RT_UnknownRelease)
.Case(SWIFT_WRAPPER_NAME("swift_nonatomic_unknownRelease_n"), RT_UnknownReleaseN)
#endif
.Default(RT_Unknown);
}
} // end namespace swift
#endif