mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-01-31 20:51:52 +01:00
076a6683eb
We've been running doxygen with the autobrief option for a couple of years now. This makes the \brief markers into our comments redundant. Since they are a visual distraction and we don't want to encourage more \brief markers in new code either, this patch removes them all. Patch produced by for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done Differential Revision: https://reviews.llvm.org/D46290 llvm-svn: 331272
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
//===- ObjCARCAliasAnalysis.h - ObjC ARC Alias Analysis ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
/// This file declares a simple ARC-aware AliasAnalysis using special knowledge
|
|
/// of Objective C to enhance other optimization passes which rely on the Alias
|
|
/// Analysis infrastructure.
|
|
///
|
|
/// WARNING: This file knows about certain library functions. It recognizes them
|
|
/// by name, and hardwires knowledge of their semantics.
|
|
///
|
|
/// WARNING: This file knows about how certain Objective-C library functions are
|
|
/// used. Naive LLVM IR transformations which would otherwise be
|
|
/// behavior-preserving may break these assumptions.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_OBJCARCALIASANALYSIS_H
|
|
#define LLVM_ANALYSIS_OBJCARCALIASANALYSIS_H
|
|
|
|
#include "llvm/Analysis/AliasAnalysis.h"
|
|
#include "llvm/Pass.h"
|
|
|
|
namespace llvm {
|
|
namespace objcarc {
|
|
|
|
/// This is a simple alias analysis implementation that uses knowledge
|
|
/// of ARC constructs to answer queries.
|
|
///
|
|
/// TODO: This class could be generalized to know about other ObjC-specific
|
|
/// tricks. Such as knowing that ivars in the non-fragile ABI are non-aliasing
|
|
/// even though their offsets are dynamic.
|
|
class ObjCARCAAResult : public AAResultBase<ObjCARCAAResult> {
|
|
friend AAResultBase<ObjCARCAAResult>;
|
|
|
|
const DataLayout &DL;
|
|
|
|
public:
|
|
explicit ObjCARCAAResult(const DataLayout &DL) : AAResultBase(), DL(DL) {}
|
|
ObjCARCAAResult(ObjCARCAAResult &&Arg)
|
|
: AAResultBase(std::move(Arg)), DL(Arg.DL) {}
|
|
|
|
/// Handle invalidation events from the new pass manager.
|
|
///
|
|
/// By definition, this result is stateless and so remains valid.
|
|
bool invalidate(Function &, const PreservedAnalyses &,
|
|
FunctionAnalysisManager::Invalidator &) {
|
|
return false;
|
|
}
|
|
|
|
AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
|
|
bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
|
|
|
|
using AAResultBase::getModRefBehavior;
|
|
FunctionModRefBehavior getModRefBehavior(const Function *F);
|
|
|
|
using AAResultBase::getModRefInfo;
|
|
ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
|
|
};
|
|
|
|
/// Analysis pass providing a never-invalidated alias analysis result.
|
|
class ObjCARCAA : public AnalysisInfoMixin<ObjCARCAA> {
|
|
friend AnalysisInfoMixin<ObjCARCAA>;
|
|
static AnalysisKey Key;
|
|
|
|
public:
|
|
typedef ObjCARCAAResult Result;
|
|
|
|
ObjCARCAAResult run(Function &F, FunctionAnalysisManager &AM);
|
|
};
|
|
|
|
/// Legacy wrapper pass to provide the ObjCARCAAResult object.
|
|
class ObjCARCAAWrapperPass : public ImmutablePass {
|
|
std::unique_ptr<ObjCARCAAResult> Result;
|
|
|
|
public:
|
|
static char ID;
|
|
|
|
ObjCARCAAWrapperPass();
|
|
|
|
ObjCARCAAResult &getResult() { return *Result; }
|
|
const ObjCARCAAResult &getResult() const { return *Result; }
|
|
|
|
bool doInitialization(Module &M) override;
|
|
bool doFinalization(Module &M) override;
|
|
void getAnalysisUsage(AnalysisUsage &AU) const override;
|
|
};
|
|
|
|
} // namespace objcarc
|
|
} // namespace llvm
|
|
|
|
#endif
|