95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
//===- ProvenanceAnalysisEvaluator.cpp - ObjC ARC Optimization ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "ProvenanceAnalysis.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/InstIterator.h"
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#include "llvm/IR/Module.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::objcarc;
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namespace {
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class PAEval : public FunctionPass {
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public:
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static char ID;
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PAEval();
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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bool runOnFunction(Function &F) override;
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};
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}
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char PAEval::ID = 0;
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PAEval::PAEval() : FunctionPass(ID) {}
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void PAEval::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequired<AAResultsWrapperPass>();
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}
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static StringRef getName(Value *V) {
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StringRef Name = V->getName();
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if (Name.startswith("\1"))
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return Name.substr(1);
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return Name;
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}
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static void insertIfNamed(SetVector<Value *> &Values, Value *V) {
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if (!V->hasName())
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return;
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Values.insert(V);
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}
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bool PAEval::runOnFunction(Function &F) {
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SetVector<Value *> Values;
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for (auto &Arg : F.args())
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insertIfNamed(Values, &Arg);
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for (auto I = inst_begin(F), E = inst_end(F); I != E; ++I) {
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insertIfNamed(Values, &*I);
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for (auto &Op : I->operands())
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insertIfNamed(Values, Op);
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}
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ProvenanceAnalysis PA;
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PA.setAA(&getAnalysis<AAResultsWrapperPass>().getAAResults());
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const DataLayout &DL = F.getParent()->getDataLayout();
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for (Value *V1 : Values) {
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StringRef NameV1 = getName(V1);
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for (Value *V2 : Values) {
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StringRef NameV2 = getName(V2);
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if (NameV1 >= NameV2)
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continue;
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errs() << NameV1 << " and " << NameV2;
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if (PA.related(V1, V2, DL))
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errs() << " are related.\n";
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else
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errs() << " are not related.\n";
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}
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}
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return false;
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}
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FunctionPass *llvm::createPAEvalPass() { return new PAEval(); }
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INITIALIZE_PASS_BEGIN(PAEval, "pa-eval",
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"Evaluate ProvenanceAnalysis on all pairs", false, true)
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INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
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INITIALIZE_PASS_END(PAEval, "pa-eval",
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"Evaluate ProvenanceAnalysis on all pairs", false, true)
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