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Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
139 lines
4.8 KiB
C++
139 lines
4.8 KiB
C++
//===- AliasDebugger.cpp - Simple Alias Analysis Use Checker --------------===//
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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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//
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// This simple pass checks alias analysis users to ensure that if they
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// create a new value, they do not query AA without informing it of the value.
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// It acts as a shim over any other AA pass you want.
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//
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// Yes keeping track of every value in the program is expensive, but this is
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// a debugging pass.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Instructions.h"
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#include "llvm/Module.h"
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#include "llvm/Pass.h"
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#include <set>
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using namespace llvm;
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namespace {
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class AliasDebugger : public ModulePass, public AliasAnalysis {
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//What we do is simple. Keep track of every value the AA could
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//know about, and verify that queries are one of those.
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//A query to a value that didn't exist when the AA was created
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//means someone forgot to update the AA when creating new values
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std::set<const Value*> Vals;
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public:
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static char ID; // Class identification, replacement for typeinfo
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AliasDebugger() : ModulePass(ID) {
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initializeAliasDebuggerPass(*PassRegistry::getPassRegistry());
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}
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bool runOnModule(Module &M) {
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InitializeAliasAnalysis(this); // set up super class
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for(Module::global_iterator I = M.global_begin(),
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E = M.global_end(); I != E; ++I) {
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Vals.insert(&*I);
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for (User::const_op_iterator OI = I->op_begin(),
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OE = I->op_end(); OI != OE; ++OI)
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Vals.insert(*OI);
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}
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for(Module::iterator I = M.begin(),
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E = M.end(); I != E; ++I){
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Vals.insert(&*I);
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if(!I->isDeclaration()) {
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for (Function::arg_iterator AI = I->arg_begin(), AE = I->arg_end();
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AI != AE; ++AI)
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Vals.insert(&*AI);
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for (Function::const_iterator FI = I->begin(), FE = I->end();
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FI != FE; ++FI)
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for (BasicBlock::const_iterator BI = FI->begin(), BE = FI->end();
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BI != BE; ++BI) {
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Vals.insert(&*BI);
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for (User::const_op_iterator OI = BI->op_begin(),
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OE = BI->op_end(); OI != OE; ++OI)
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Vals.insert(*OI);
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}
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}
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}
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return false;
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AliasAnalysis::getAnalysisUsage(AU);
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AU.setPreservesAll(); // Does not transform code
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}
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/// getAdjustedAnalysisPointer - This method is used when a pass implements
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/// an analysis interface through multiple inheritance. If needed, it
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/// should override this to adjust the this pointer as needed for the
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/// specified pass info.
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virtual void *getAdjustedAnalysisPointer(AnalysisID PI) {
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if (PI == &AliasAnalysis::ID)
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return (AliasAnalysis*)this;
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return this;
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}
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//------------------------------------------------
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// Implement the AliasAnalysis API
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//
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AliasResult alias(const Location &LocA, const Location &LocB) {
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assert(Vals.find(LocA.Ptr) != Vals.end() &&
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"Never seen value in AA before");
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assert(Vals.find(LocB.Ptr) != Vals.end() &&
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"Never seen value in AA before");
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return AliasAnalysis::alias(LocA, LocB);
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}
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ModRefResult getModRefInfo(ImmutableCallSite CS,
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const Location &Loc) {
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assert(Vals.find(Loc.Ptr) != Vals.end() && "Never seen value in AA before");
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return AliasAnalysis::getModRefInfo(CS, Loc);
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}
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ModRefResult getModRefInfo(ImmutableCallSite CS1,
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ImmutableCallSite CS2) {
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return AliasAnalysis::getModRefInfo(CS1,CS2);
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}
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bool pointsToConstantMemory(const Location &Loc, bool OrLocal) {
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assert(Vals.find(Loc.Ptr) != Vals.end() && "Never seen value in AA before");
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return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
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}
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virtual void deleteValue(Value *V) {
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assert(Vals.find(V) != Vals.end() && "Never seen value in AA before");
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AliasAnalysis::deleteValue(V);
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}
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virtual void copyValue(Value *From, Value *To) {
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Vals.insert(To);
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AliasAnalysis::copyValue(From, To);
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}
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};
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}
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char AliasDebugger::ID = 0;
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INITIALIZE_AG_PASS(AliasDebugger, AliasAnalysis, "debug-aa",
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"AA use debugger", false, true, false)
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Pass *llvm::createAliasDebugger() { return new AliasDebugger(); }
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