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Added code to generate initial set of summaries for instance methods. 

llvm-svn: 50689
This commit is contained in:
Ted Kremenek 2008-05-06 00:30:21 +00:00
parent 125d73dc84
commit 0806f910d4
1 changed files with 55 additions and 17 deletions
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72
clang/lib/Analysis/CFRefCount.cpp
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@ -38,6 +38,11 @@ static inline Selector GetNullarySelector(const char* name, ASTContext& Ctx) {
return Ctx.Selectors.getSelector(0, &II);
}
static inline Selector GetUnarySelector(const char* name, ASTContext& Ctx) {
IdentifierInfo* II = &Ctx.Idents.get(name);
return Ctx.Selectors.getSelector(1, &II);
}
//===----------------------------------------------------------------------===//
// Symbolic Evaluation of Reference Counting Logic
//===----------------------------------------------------------------------===//
@ -161,7 +166,7 @@ class RetainSummaryManager {
FuncSummariesTy;
typedef llvm::DenseMap<Selector, RetainSummary*>
ObjCMethodSummariesTy;
ObjCMethSummariesTy;
//==-----------------------------------------------------------------==//
// Data.
@ -179,12 +184,12 @@ class RetainSummaryManager {
// FuncSummaries - A map from FunctionDecls to summaries.
FuncSummariesTy FuncSummaries;
// ObjCInstanceMethodSummaries - A map from selectors (for instance methods)
// ObjCInstMethSummaries - A map from selectors (for instance methods)
// to summaries.
ObjCMethodSummariesTy ObjCInstanceMethodSummaries;
ObjCMethSummariesTy ObjCInstMethSummaries;
// ObjCMethodSummaries - A map from selectors to summaries.
ObjCMethodSummariesTy ObjCMethodSummaries;
// ObjCMethSummaries - A map from selectors to summaries.
ObjCMethSummariesTy ObjCMethSummaries;
// ArgEffectsSet - A FoldingSet of uniqued ArgEffects.
ArgEffectsSetTy ArgEffectsSet;
@ -215,15 +220,24 @@ class RetainSummaryManager {
RetainSummary* getPersistentSummary(ArgEffects* AE, RetEffect RE);
RetainSummary* getPersistentSummary(RetEffect RE) {
return getPersistentSummary(getArgEffects(), RE);
}
RetainSummary* getInstanceMethodSummary(Selector S);
RetainSummary* getMethodSummary(Selector S);
RetainSummary* getInitMethodSummary(Selector S);
void InitializeInstanceSummaries();
public:
RetainSummaryManager(ASTContext& ctx, bool gcenabled)
: Ctx(ctx), GCEnabled(gcenabled) {}
: Ctx(ctx), GCEnabled(gcenabled) {
InitializeInstanceSummaries();
}
~RetainSummaryManager();
@ -393,19 +407,19 @@ RetainSummaryManager::getUnarySummary(FunctionDecl* FD, UnaryFuncKind func) {
switch (func) {
case cfretain: {
ScratchArgs.push_back(std::make_pair(0, IncRef));
return getPersistentSummary(getArgEffects(), RetEffect::MakeAlias(0));
return getPersistentSummary(RetEffect::MakeAlias(0));
}
case cfrelease: {
ScratchArgs.push_back(std::make_pair(0, DecRef));
return getPersistentSummary(getArgEffects(), RetEffect::MakeNoRet());
return getPersistentSummary(RetEffect::MakeNoRet());
}
case cfmakecollectable: {
if (GCEnabled)
ScratchArgs.push_back(std::make_pair(0, DecRef));
return getPersistentSummary(getArgEffects(), RetEffect::MakeAlias(0));
return getPersistentSummary(RetEffect::MakeAlias(0));
}
default:
@ -449,7 +463,7 @@ RetainSummary* RetainSummaryManager::getCFSummaryCreateRule(FunctionDecl* FD) {
// just handle the default case.
assert (ScratchArgs.empty());
return getPersistentSummary(getArgEffects(), RetEffect::MakeOwned());
return getPersistentSummary(RetEffect::MakeOwned());
}
RetainSummary* RetainSummaryManager::getCFSummaryGetRule(FunctionDecl* FD) {
@ -474,7 +488,7 @@ RetainSummary* RetainSummaryManager::getCFSummaryGetRule(FunctionDecl* FD) {
// just handle the default case.
assert (ScratchArgs.empty());
return getPersistentSummary(getArgEffects(), RetEffect::MakeNotOwned());
return getPersistentSummary(RetEffect::MakeNotOwned());
}
//===----------------------------------------------------------------------===//
@ -485,18 +499,18 @@ RetainSummary* RetainSummaryManager::getInitMethodSummary(Selector S) {
assert(ScratchArgs.empty());
RetainSummary* Summ =
getPersistentSummary(getArgEffects(), RetEffect::MakeReceiverAlias());
getPersistentSummary(RetEffect::MakeReceiverAlias());
ObjCMethodSummaries[S] = Summ;
ObjCMethSummaries[S] = Summ;
return Summ;
}
RetainSummary* RetainSummaryManager::getMethodSummary(Selector S) {
// Look up a summary in our cache of Selectors -> Summaries.
ObjCMethodSummariesTy::iterator I = ObjCMethodSummaries.find(S);
ObjCMethSummariesTy::iterator I = ObjCMethSummaries.find(S);
if (I != ObjCMethodSummaries.end())
if (I != ObjCMethSummaries.end())
return I->second;
// "initXXX": pass-through for receiver.
@ -509,12 +523,36 @@ RetainSummary* RetainSummaryManager::getMethodSummary(Selector S) {
return 0;
}
void RetainSummaryManager::InitializeInstanceSummaries() {
assert (ScratchArgs.empty());
RetEffect E = isGCEnabled() ? RetEffect::MakeNoRet() : RetEffect::MakeOwned();
RetainSummary* Summ = getPersistentSummary(E);
// Create the "alloc" selector.
ObjCInstMethSummaries[ GetNullarySelector("alloc", Ctx) ] = Summ;
// Create the "new" selector.
ObjCInstMethSummaries[ GetNullarySelector("new", Ctx) ] = Summ;
// Create the "allocWithZone:" selector.
ObjCInstMethSummaries[ GetUnarySelector("allocWithZone", Ctx) ] = Summ;
// Create the "copyWithZone:" selector.
ObjCInstMethSummaries[ GetUnarySelector("copyWithZone", Ctx) ] = Summ;
// Create the "mutableCopyWithZone:" selector.
ObjCInstMethSummaries[ GetUnarySelector("mutableCopyWithZone", Ctx) ] = Summ;
}
RetainSummary* RetainSummaryManager::getInstanceMethodSummary(Selector S) {
// Look up a summary in our cache of Selectors -> Summaries.
ObjCMethodSummariesTy::iterator I = ObjCInstanceMethodSummaries.find(S);
ObjCMethSummariesTy::iterator I = ObjCInstMethSummaries.find(S);
if (I != ObjCInstanceMethodSummaries.end())
if (I != ObjCInstMethSummaries.end())
return I->second;
return 0;