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//===- ProvenanceAnalysisEvaluator.cpp - ObjC ARC Optimization ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "ProvenanceAnalysis.h"
#include "llvm/Transforms/ObjCARC.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace llvm::objcarc;
static StringRef getName(Value *V) {
StringRef Name = V->getName();
if (Name.startswith("\1"))
return Name.substr(1);
return Name;
}
static void insertIfNamed(SetVector<Value *> &Values, Value *V) {
if (!V->hasName())
return;
Values.insert(V);
}
PreservedAnalyses PAEvalPass::run(Function &F, FunctionAnalysisManager &AM) {
SetVector<Value *> Values;
for (auto &Arg : F.args())
insertIfNamed(Values, &Arg);
for (Instruction &I : instructions(F)) {
insertIfNamed(Values, &I);
for (auto &Op : I.operands())
insertIfNamed(Values, Op);
}
ProvenanceAnalysis PA;
PA.setAA(&AM.getResult<AAManager>(F));
for (Value *V1 : Values) {
StringRef NameV1 = getName(V1);
for (Value *V2 : Values) {
StringRef NameV2 = getName(V2);
if (NameV1 >= NameV2)
continue;
errs() << NameV1 << " and " << NameV2;
if (PA.related(V1, V2))
errs() << " are related.\n";
else
errs() << " are not related.\n";
}
}
return PreservedAnalyses::all();
}
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