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e223f1fc9b
* Remove RegisterPreservingCC. It was unused. * Remove DefaultCC from the runtime. The distinction between C_CC and DefaultCC was unused and inconsistently applied. Separate C_CC and DefaultCC are still present in the compiler. * Remove function pointer indirection from runtime functions except those that are used by Instruments. The remaining Instruments interface is expected to change later due to function pointer liability. * Remove swift_rt_ wrappers. Function pointers are an ABI liability that we don't want, and there are better ways to get nonlazy binding if we need it. The fully custom wrappers were only needed for RegisterPreservingCC and for optimizing the Instruments function pointers.
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===--- LLVMARCOpts.h - LLVM level ARC Opts Util. Declarations -*- 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_LLVMPASSES_LLVMARCOPTS_H
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#define SWIFT_LLVMPASSES_LLVMARCOPTS_H
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#include "swift/Basic/LLVM.h"
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#include "swift/Runtime/Config.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/Function.h"
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#include "llvm/ADT/StringSwitch.h"
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namespace swift {
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enum RT_Kind {
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#define KIND(Name, MemBehavior) RT_ ## Name,
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#include "LLVMSwift.def"
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};
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/// classifyInstruction - Take a look at the specified instruction and classify
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/// it into what kind of runtime entrypoint it is, if any.
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inline RT_Kind classifyInstruction(const llvm::Instruction &I) {
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if (!I.mayReadOrWriteMemory())
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return RT_NoMemoryAccessed;
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// Non-calls or calls to indirect functions are unknown.
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auto *CI = dyn_cast<llvm::CallInst>(&I);
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if (CI == 0) return RT_Unknown;
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llvm::Function *F = CI->getCalledFunction();
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if (F == 0) return RT_Unknown;
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return llvm::StringSwitch<RT_Kind>(F->getName())
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#define SWIFT_FUNC(Name, MemBehavior, TextualName) \
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.Case("swift_" #TextualName, RT_ ## Name)
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#define OBJC_FUNC(Name, MemBehavior, TextualName) \
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.Case("objc_" #TextualName, RT_ ## Name)
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#define SWIFT_INTERNAL_FUNC_NEVER_NONATOMIC(Name, MemBehavior, TextualName) \
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.Case("__swift_" #TextualName, RT_ ## Name)
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#include "LLVMSwift.def"
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// Support non-atomic versions of reference counting entry points.
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#define SWIFT_FUNC(Name, MemBehavior, TextualName) \
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.Case("swift_nonatomic_" #TextualName, RT_ ## Name)
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#define OBJC_FUNC(Name, MemBehavior, TextualName) \
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.Case("objc_nonatomic_" #TextualName, RT_ ## Name)
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#define SWIFT_INTERNAL_FUNC_NEVER_NONATOMIC(Name, MemBehavior, TextualName)
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#include "LLVMSwift.def"
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.Default(RT_Unknown);
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}
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} // end namespace swift
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#endif
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