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7382f6d0d4
This adds back r222061, but now calls initializePAEvalPass from the correct library to avoid link problems. Original message: Don't make assumptions about the name of private global variables. Private variables are can be renamed, so it is not reliable to make decisions on the name. The name is also dropped by the assembler before getting to the linker, so using the name causes a disconnect between how llvm makes a decision (var name) and how the linker makes a decision (section it is in). This patch changes one case where we were looking at the variable name to use the section instead. Test tuning by Michael Gottesman. llvm-svn: 222117
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
//===- ProvenanceAnalysisEvaluator.cpp - ObjC ARC Optimization ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ProvenanceAnalysis.h"
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#include "llvm/Pass.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/InstIterator.h"
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#include "llvm/IR/Function.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<AliasAnalysis>();
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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<AliasAnalysis>());
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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))
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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_AG_DEPENDENCY(AliasAnalysis)
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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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